nanocore_OptionalFeatures_bat_2019-08-21_00_20.txt

* MalFamily: "Nanocore"

* MalScore: 10.0

* File Name: "OptionalFeatures.bat"
* File Size: 1276936
* File Type: "PE32 executable (GUI) Intel 80386, for MS Windows"
* SHA256: "ef8c8800b769dc03fea30ca4dad7d73e124840e3540454c1b6dbe827a1bd38c6"
* MD5: "cd289317ab5a0fac33c366772fde31ec"
* SHA1: "4245994867c49a946559a7671e5774915a06bd3b"
* SHA512: "2f616ff6d84a1f4d8dced9a89754ca0d253e52285ff2516e4b5234425bcadea3ce6893c9afee6be24dabc87e5c0b1fcc26fd166f34ddae4b4cf7dd389659e7f8"
* CRC32: "EDA2509B"
* SSDEEP: "24576:yAHnh+eWsN3skA4RV1Hom2KXMmHam0963Se/7qHSUiO5:1h+ZkldoPK8YamsNefUr"

* Process Execution:
    "OptionalFeatures.bat",
    "RegAsm.exe"


* Executed Commands:

* Signatures Detected:

        "Description": "Attempts to connect to a dead IP:Port (2 unique times)",
        "Details":

                "IP": "192.169.69.25:6040"


                "IP": "79.134.225.102:6040"




        "Description": "Creates RWX memory",
        "Details":


        "Description": "A process attempted to delay the analysis task.",
        "Details":

                "Process": "RegAsm.exe tried to sleep 717 seconds, actually delayed analysis time by 0 seconds"




        "Description": "At least one IP Address, Domain, or File Name was found in a crypto call",
        "Details":

                "ioc": "v2.0.50727"




        "Description": "Expresses interest in specific running processes",
        "Details":

                "process": "smss.exe"


                "process": "RegAsm.exe"




        "Description": "Reads data out of its own binary image",
        "Details":

                "self_read": "process: OptionalFeatures.bat, pid: 3480, offset: 0x00000000, length: 0x00137c08"


                "self_read": "process: RegAsm.exe, pid: 2576, offset: 0x00000000, length: 0x00001000"


                "self_read": "process: RegAsm.exe, pid: 2576, offset: 0x00000080, length: 0x00000200"


                "self_read": "process: RegAsm.exe, pid: 2576, offset: 0x00000178, length: 0x00000200"


                "self_read": "process: RegAsm.exe, pid: 2576, offset: 0x0000a720, length: 0x00000200"


                "self_read": "process: RegAsm.exe, pid: 2576, offset: 0x0000a73c, length: 0x00000200"




        "Description": "The binary likely contains encrypted or compressed data.",
        "Details":

                "section": "name: .rsrc, entropy: 7.61, characteristics: IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_READ, raw_size: 0x0006d600, virtual_size: 0x0006d428"




        "Description": "Executed a process and injected code into it, probably while unpacking",
        "Details":

                "Injection": "OptionalFeatures.bat(3480) -> RegAsm.exe(2576)"




        "Description": "Attempts to remove evidence of file being downloaded from the Internet",
        "Details":

                "file": "C:\\Windows\\Microsoft.NET\\Framework\\v2.0.50727\\RegAsm.exe:Zone.Identifier"




        "Description": "Installs itself for autorun at Windows startup",
        "Details":

                "key": "HKEY_CURRENT_USER\\Software\\Microsoft\\Windows\\CurrentVersion\\Run\\woMzGMydkM"


                "data": "C:\\Users\\Public\\woMzGMydkM.vbs"


                "key": "HKEY_LOCAL_MACHINE\\SOFTWARE\\Wow6432Node\\Microsoft\\Windows\\CurrentVersion\\Run\\DSL Subsystem"


                "data": "C:\\Program Files (x86)\\DSL Subsystem\\dslss.exe"




        "Description": "Exhibits behavior characteristic of Nanocore RAT",
        "Details":


        "Description": "Creates a slightly modified copy of itself",
        "Details":

                "file": "C:\\Users\\user\\AppData\\Roaming\\RtDCpl64\\OptionalFeatures.bat"


                "percent_match": 100




        "Description": "Collects information to fingerprint the system",
        "Details":


        "Description": "Anomalous binary characteristics",
        "Details":

                "anomaly": "Actual checksum does not match that reported in PE header"




        "Description": "Created network traffic indicative of malicious activity",
        "Details":

                "signature": "ET TROJAN Possible NanoCore C2 60B"





* Started Service:

* Mutexes:
    "Global\\CLR_PerfMon_WrapMutex",
    "Global\\CLR_CASOFF_MUTEX",
    "Global\\f53508b1-a0ef-4b78-a93e-6eb85b6d6cf1",
    "Global\\.net clr networking"


* Modified Files:
    "C:\\Users\\user\\AppData\\Roaming\\RtDCpl64\\OptionalFeatures.bat",
    "C:\\Users\\Public\\woMzGMydkM.vbs",
    "C:\\Users\\user\\AppData\\Roaming\\C1515A12-1764-4632-ACE9-A9DFF9253200\\run.dat",
    "C:\\Program Files (x86)\\DSL Subsystem\\dslss.exe"


* Deleted Files:
    "C:\\Program Files (x86)\\DSL Subsystem\\dslss.exe",
    "C:\\Users\\user\\AppData\\Roaming\\C1515A12-1764-4632-ACE9-A9DFF9253200\\DSL Subsystem\\dslss.exe",
    "C:\\Windows\\Microsoft.NET\\Framework\\v2.0.50727\\RegAsm.exe:Zone.Identifier"


* Modified Registry Keys:
    "HKEY_CURRENT_USER\\Software\\Microsoft\\Windows\\CurrentVersion\\Run\\woMzGMydkM",
    "HKEY_LOCAL_MACHINE\\SOFTWARE\\Wow6432Node\\Microsoft\\Windows\\CurrentVersion\\Run\\DSL Subsystem"


* Deleted Registry Keys:

* DNS Communications:

        "type": "A",
        "request": "austine4.duckdns.org",
        "answers":

                "data": "79.134.225.102",
                "type": "A"


                "data": "192.169.69.25",
                "type": "A"





* Domains:

        "ip": "192.169.69.25",
        "domain": "austine4.duckdns.org"



* Network Communication - ICMP:

* Network Communication - HTTP:

* Network Communication - SMTP:

* Network Communication - Hosts:

* Network Communication - IRC: