Analysis

  • max time kernel
    146s
  • max time network
    137s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    18-01-2021 21:51

General

  • Target

    SecuriteInfo.com.Generic.mg.fb5363e0cae04979.19519.exe

  • Size

    1.5MB

  • MD5

    fb5363e0cae049792ad0705042daaaa4

  • SHA1

    ecac4b6890de7ce53acdd794bf42cfb2019ad76e

  • SHA256

    e0568a1b9f5de82ff98e314fcd590ee101e0189c2b62052a38f512c5d50e5920

  • SHA512

    753ea44b69b17e03ae7e6b3ec5f2e304472c5a80da855b5ff8592d9fa0466aa590c6ba1eedf9ffe62560c6324e22f527d6e0ac810991d3df0c4a255bc5fdcaec

Malware Config

Signatures

  • Snake Keylogger

    Keylogger and Infostealer first seen in November 2020.

  • Snake Keylogger Payload 2 IoCs
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 2 IoCs
  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • Reads user/profile data of local email clients 2 TTPs

    Email clients store some user data on disk where infostealers will often target it.

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Adds Run key to start application 2 TTPs 2 IoCs
  • Looks up external IP address via web service 3 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 14 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 24 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Generic.mg.fb5363e0cae04979.19519.exe
    "C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Generic.mg.fb5363e0cae04979.19519.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1740
    • C:\Windows\SysWOW64\cmd.exe
      "cmd.exe" /c REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "fxyt" /t REG_SZ /d "C:\Users\Admin\jra.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:800
      • C:\Windows\SysWOW64\reg.exe
        REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "fxyt" /t REG_SZ /d "C:\Users\Admin\jra.exe"
        3⤵
        • Adds Run key to start application
        PID:796
    • C:\Users\Admin\jra.exe
      "C:\Users\Admin\jra.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1648
      • C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe
        "C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:1520

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe

    MD5

    91c9ae9c9a17a9db5e08b120e668c74c

    SHA1

    50770954c1ceb0bb6f1d5d3f2de2a0a065773723

    SHA256

    e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f

    SHA512

    ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e

  • C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe

    MD5

    91c9ae9c9a17a9db5e08b120e668c74c

    SHA1

    50770954c1ceb0bb6f1d5d3f2de2a0a065773723

    SHA256

    e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f

    SHA512

    ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e

  • C:\Users\Admin\jra.exe

    MD5

    fb5363e0cae049792ad0705042daaaa4

    SHA1

    ecac4b6890de7ce53acdd794bf42cfb2019ad76e

    SHA256

    e0568a1b9f5de82ff98e314fcd590ee101e0189c2b62052a38f512c5d50e5920

    SHA512

    753ea44b69b17e03ae7e6b3ec5f2e304472c5a80da855b5ff8592d9fa0466aa590c6ba1eedf9ffe62560c6324e22f527d6e0ac810991d3df0c4a255bc5fdcaec

  • C:\Users\Admin\jra.exe

    MD5

    fb5363e0cae049792ad0705042daaaa4

    SHA1

    ecac4b6890de7ce53acdd794bf42cfb2019ad76e

    SHA256

    e0568a1b9f5de82ff98e314fcd590ee101e0189c2b62052a38f512c5d50e5920

    SHA512

    753ea44b69b17e03ae7e6b3ec5f2e304472c5a80da855b5ff8592d9fa0466aa590c6ba1eedf9ffe62560c6324e22f527d6e0ac810991d3df0c4a255bc5fdcaec

  • \Users\Admin\AppData\Local\Temp\InstallUtil.exe

    MD5

    91c9ae9c9a17a9db5e08b120e668c74c

    SHA1

    50770954c1ceb0bb6f1d5d3f2de2a0a065773723

    SHA256

    e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f

    SHA512

    ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e

  • \Users\Admin\jra.exe

    MD5

    fb5363e0cae049792ad0705042daaaa4

    SHA1

    ecac4b6890de7ce53acdd794bf42cfb2019ad76e

    SHA256

    e0568a1b9f5de82ff98e314fcd590ee101e0189c2b62052a38f512c5d50e5920

    SHA512

    753ea44b69b17e03ae7e6b3ec5f2e304472c5a80da855b5ff8592d9fa0466aa590c6ba1eedf9ffe62560c6324e22f527d6e0ac810991d3df0c4a255bc5fdcaec

  • memory/796-9-0x0000000000000000-mapping.dmp

  • memory/800-8-0x0000000000000000-mapping.dmp

  • memory/1520-27-0x00000000004638FE-mapping.dmp

  • memory/1520-33-0x0000000004B20000-0x0000000004B21000-memory.dmp

    Filesize

    4KB

  • memory/1520-31-0x0000000000090000-0x0000000000092000-memory.dmp

    Filesize

    8KB

  • memory/1520-30-0x00000000741A0000-0x000000007488E000-memory.dmp

    Filesize

    6.9MB

  • memory/1520-29-0x0000000000090000-0x00000000000F8000-memory.dmp

    Filesize

    416KB

  • memory/1648-25-0x0000000004A91000-0x0000000004A92000-memory.dmp

    Filesize

    4KB

  • memory/1648-20-0x0000000004A90000-0x0000000004A91000-memory.dmp

    Filesize

    4KB

  • memory/1648-21-0x00000000005B0000-0x00000000005BB000-memory.dmp

    Filesize

    44KB

  • memory/1648-22-0x0000000000660000-0x0000000000661000-memory.dmp

    Filesize

    4KB

  • memory/1648-16-0x0000000000B10000-0x0000000000B11000-memory.dmp

    Filesize

    4KB

  • memory/1648-15-0x00000000741A0000-0x000000007488E000-memory.dmp

    Filesize

    6.9MB

  • memory/1648-12-0x0000000000000000-mapping.dmp

  • memory/1740-6-0x0000000000670000-0x0000000000671000-memory.dmp

    Filesize

    4KB

  • memory/1740-5-0x0000000000470000-0x000000000048E000-memory.dmp

    Filesize

    120KB

  • memory/1740-10-0x0000000004CD1000-0x0000000004CD2000-memory.dmp

    Filesize

    4KB

  • memory/1740-3-0x0000000000280000-0x0000000000281000-memory.dmp

    Filesize

    4KB

  • memory/1740-7-0x0000000004CD0000-0x0000000004CD1000-memory.dmp

    Filesize

    4KB

  • memory/1740-2-0x00000000741A0000-0x000000007488E000-memory.dmp

    Filesize

    6.9MB