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certca_bat_2019-08-01_09_30.txt

paladin316
Aug 1st, 2019
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  1.  
  2. * MalFamily: "Nanocore"
  3.  
  4. * MalScore: 10.0
  5.  
  6. * File Name: "certca.bat"
  7. * File Size: 1267716
  8. * File Type: "PE32 executable (GUI) Intel 80386, for MS Windows"
  9. * SHA256: "18b9ac8ec816d951e9d3d85bb8113f05e41ff3bbe21d640f1b096a6df3e56669"
  10. * MD5: "1350fbfa63944ac9d93ac6ac713645e2"
  11. * SHA1: "31aa5637442b108e3d577a147f85791095dac3ad"
  12. * SHA512: "46c9d05e2b5ccb61cd329b2f427d24c462ff868347c9bd0dbcdd557392c8b05a6e401e5c9a2cfc862fc85938ceb6fe1508db06eacec7a8290650babfcef7bd5f"
  13. * CRC32: "67DDA3D3"
  14. * SSDEEP: "24576:TAHnh+eWsN3skA4RV1Hom2KXMmHaS0bsdAfoOpAYgd1iwaQ5:eh+ZkldoPK8YaSBupAYi1iwp"
  15.  
  16. * Process Execution:
  17. "certca.bat",
  18. "RegSvcs.exe"
  19.  
  20.  
  21. * Executed Commands:
  22.  
  23. * Signatures Detected:
  24.  
  25. "Description": "Attempts to connect to a dead IP:Port (2 unique times)",
  26. "Details":
  27.  
  28. "IP": "185.217.1.156:1129"
  29.  
  30.  
  31. "IP": "194.5.98.84:1129"
  32.  
  33.  
  34.  
  35.  
  36. "Description": "Creates RWX memory",
  37. "Details":
  38.  
  39.  
  40. "Description": "A process attempted to delay the analysis task.",
  41. "Details":
  42.  
  43. "Process": "RegSvcs.exe tried to sleep 699 seconds, actually delayed analysis time by 0 seconds"
  44.  
  45.  
  46.  
  47.  
  48. "Description": "At least one IP Address, Domain, or File Name was found in a crypto call",
  49. "Details":
  50.  
  51. "ioc": "v2.0.50727"
  52.  
  53.  
  54.  
  55.  
  56. "Description": "Expresses interest in specific running processes",
  57. "Details":
  58.  
  59. "process": "RegSvcs.exe"
  60.  
  61.  
  62. "process": "taskhost.exe"
  63.  
  64.  
  65.  
  66.  
  67. "Description": "Reads data out of its own binary image",
  68. "Details":
  69.  
  70. "self_read": "process: certca.bat, pid: 200, offset: 0x00000000, length: 0x00135804"
  71.  
  72.  
  73. "self_read": "process: RegSvcs.exe, pid: 1892, offset: 0x00000000, length: 0x00001000"
  74.  
  75.  
  76. "self_read": "process: RegSvcs.exe, pid: 1892, offset: 0x00000080, length: 0x00000200"
  77.  
  78.  
  79. "self_read": "process: RegSvcs.exe, pid: 1892, offset: 0x00000178, length: 0x00000200"
  80.  
  81.  
  82. "self_read": "process: RegSvcs.exe, pid: 1892, offset: 0x00005b20, length: 0x00000200"
  83.  
  84.  
  85. "self_read": "process: RegSvcs.exe, pid: 1892, offset: 0x00005b3c, length: 0x00000200"
  86.  
  87.  
  88.  
  89.  
  90. "Description": "The binary likely contains encrypted or compressed data.",
  91. "Details":
  92.  
  93. "section": "name: .rsrc, entropy: 7.91, characteristics: IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_READ, raw_size: 0x0006b200, virtual_size: 0x0006b1b8"
  94.  
  95.  
  96.  
  97.  
  98. "Description": "Executed a process and injected code into it, probably while unpacking",
  99. "Details":
  100.  
  101. "Injection": "certca.bat(200) -> RegSvcs.exe(1892)"
  102.  
  103.  
  104.  
  105.  
  106. "Description": "Attempts to remove evidence of file being downloaded from the Internet",
  107. "Details":
  108.  
  109. "file": "C:\\Windows\\Microsoft.NET\\Framework\\v2.0.50727\\RegSvcs.exe:Zone.Identifier"
  110.  
  111.  
  112.  
  113.  
  114. "Description": "Installs itself for autorun at Windows startup",
  115. "Details":
  116.  
  117. "key": "HKEY_CURRENT_USER\\Software\\Microsoft\\Windows\\CurrentVersion\\Run\\WYtqWqzntn"
  118.  
  119.  
  120. "data": "C:\\Users\\Public\\WYtqWqzntn.vbs"
  121.  
  122.  
  123.  
  124.  
  125. "Description": "Exhibits behavior characteristic of Nanocore RAT",
  126. "Details":
  127.  
  128.  
  129. "Description": "Creates a slightly modified copy of itself",
  130. "Details":
  131.  
  132. "file": "C:\\Users\\user\\AppData\\Roaming\\iexpress\\certca.bat"
  133.  
  134.  
  135. "percent_match": 100
  136.  
  137.  
  138.  
  139.  
  140. "Description": "Collects information to fingerprint the system",
  141. "Details":
  142.  
  143.  
  144. "Description": "Anomalous binary characteristics",
  145. "Details":
  146.  
  147. "anomaly": "Actual checksum does not match that reported in PE header"
  148.  
  149.  
  150.  
  151.  
  152.  
  153. * Started Service:
  154.  
  155. * Mutexes:
  156. "Global\\CLR_CASOFF_MUTEX",
  157. "Global\\7b902218-069b-4546-af78-0d2d86c9fc07",
  158. "Global\\.net clr networking"
  159.  
  160.  
  161. * Modified Files:
  162. "C:\\Users\\user\\AppData\\Roaming\\iexpress\\certca.bat",
  163. "C:\\Users\\Public\\WYtqWqzntn.vbs",
  164. "C:\\Users\\user\\AppData\\Roaming\\C1515A12-1764-4632-ACE9-A9DFF9253200\\run.dat"
  165.  
  166.  
  167. * Deleted Files:
  168. "C:\\Windows\\Microsoft.NET\\Framework\\v2.0.50727\\RegSvcs.exe:Zone.Identifier"
  169.  
  170.  
  171. * Modified Registry Keys:
  172. "HKEY_CURRENT_USER\\Software\\Microsoft\\Windows\\CurrentVersion\\Run\\WYtqWqzntn"
  173.  
  174.  
  175. * Deleted Registry Keys:
  176.  
  177. * DNS Communications:
  178.  
  179. "type": "A",
  180. "request": "nanocore511.ddns.net",
  181. "answers":
  182.  
  183. "data": "185.217.1.156",
  184. "type": "A"
  185.  
  186.  
  187.  
  188.  
  189.  
  190. * Domains:
  191.  
  192. "ip": "185.217.1.156",
  193. "domain": "nanocore511.ddns.net"
  194.  
  195.  
  196.  
  197. * Network Communication - ICMP:
  198.  
  199. * Network Communication - HTTP:
  200.  
  201. * Network Communication - SMTP:
  202.  
  203. * Network Communication - Hosts:
  204.  
  205. * Network Communication - IRC:
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