Analysis

  • max time kernel
    42s
  • max time network
    144s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    28-01-2021 23:54

General

  • Target

    SecuriteInfo.com.Trojan.Packed2.42783.9831.18705.exe

  • Size

    1.2MB

  • MD5

    263f0b35e5768e624a84ac122bbf6a8c

  • SHA1

    53b6283cf3fe925f008ff5e75bb9f59ec115e0db

  • SHA256

    37ba2407fcedfb820ba97763e2fb4799604a7085a60d48f69de9583fe87eb9f3

  • SHA512

    3cc99c5e89bc9443fb78e7ffd09efd5bd846fde48cbbbaf2ef4ff41f39a393b3e5660f74117113f9dee9540a1c5f4ba07e54d17790eda1375c13af3ddcfe4fa1

Malware Config

Signatures

  • Snake Keylogger

    Keylogger and Infostealer first seen in November 2020.

  • Snake Keylogger Payload 3 IoCs
  • Executes dropped EXE 2 IoCs
  • Drops startup file 1 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.

  • Looks up external IP address via web service 3 IoCs

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

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 14 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 16 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Trojan.Packed2.42783.9831.18705.exe
    "C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Trojan.Packed2.42783.9831.18705.exe"
    1⤵
    • Drops startup file
    • Loads dropped DLL
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1636
    • C:\Users\Admin\omsu.exe
      "C:\Users\Admin\omsu.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:924
      • 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:976

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\omsu.exe

    MD5

    263f0b35e5768e624a84ac122bbf6a8c

    SHA1

    53b6283cf3fe925f008ff5e75bb9f59ec115e0db

    SHA256

    37ba2407fcedfb820ba97763e2fb4799604a7085a60d48f69de9583fe87eb9f3

    SHA512

    3cc99c5e89bc9443fb78e7ffd09efd5bd846fde48cbbbaf2ef4ff41f39a393b3e5660f74117113f9dee9540a1c5f4ba07e54d17790eda1375c13af3ddcfe4fa1

  • C:\Users\Admin\omsu.exe

    MD5

    263f0b35e5768e624a84ac122bbf6a8c

    SHA1

    53b6283cf3fe925f008ff5e75bb9f59ec115e0db

    SHA256

    37ba2407fcedfb820ba97763e2fb4799604a7085a60d48f69de9583fe87eb9f3

    SHA512

    3cc99c5e89bc9443fb78e7ffd09efd5bd846fde48cbbbaf2ef4ff41f39a393b3e5660f74117113f9dee9540a1c5f4ba07e54d17790eda1375c13af3ddcfe4fa1

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

    MD5

    91c9ae9c9a17a9db5e08b120e668c74c

    SHA1

    50770954c1ceb0bb6f1d5d3f2de2a0a065773723

    SHA256

    e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f

    SHA512

    ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e

  • \Users\Admin\omsu.exe

    MD5

    263f0b35e5768e624a84ac122bbf6a8c

    SHA1

    53b6283cf3fe925f008ff5e75bb9f59ec115e0db

    SHA256

    37ba2407fcedfb820ba97763e2fb4799604a7085a60d48f69de9583fe87eb9f3

    SHA512

    3cc99c5e89bc9443fb78e7ffd09efd5bd846fde48cbbbaf2ef4ff41f39a393b3e5660f74117113f9dee9540a1c5f4ba07e54d17790eda1375c13af3ddcfe4fa1

  • memory/924-14-0x00000000746F0000-0x0000000074DDE000-memory.dmp

    Filesize

    6.9MB

  • memory/924-15-0x0000000000F80000-0x0000000000F81000-memory.dmp

    Filesize

    4KB

  • memory/924-17-0x0000000000C30000-0x0000000000C31000-memory.dmp

    Filesize

    4KB

  • memory/924-21-0x0000000000940000-0x000000000094B000-memory.dmp

    Filesize

    44KB

  • memory/924-22-0x0000000000B60000-0x0000000000B61000-memory.dmp

    Filesize

    4KB

  • memory/924-11-0x0000000000000000-mapping.dmp

  • memory/976-25-0x0000000000400000-0x0000000000468000-memory.dmp

    Filesize

    416KB

  • memory/976-31-0x0000000004B00000-0x0000000004B01000-memory.dmp

    Filesize

    4KB

  • memory/976-29-0x0000000000400000-0x0000000000468000-memory.dmp

    Filesize

    416KB

  • memory/976-28-0x00000000746F0000-0x0000000074DDE000-memory.dmp

    Filesize

    6.9MB

  • memory/976-26-0x000000000046370E-mapping.dmp

  • memory/1636-7-0x0000000000B70000-0x0000000000B8E000-memory.dmp

    Filesize

    120KB

  • memory/1636-5-0x0000000004F60000-0x0000000004F61000-memory.dmp

    Filesize

    4KB

  • memory/1636-3-0x0000000000D50000-0x0000000000D51000-memory.dmp

    Filesize

    4KB

  • memory/1636-2-0x00000000746F0000-0x0000000074DDE000-memory.dmp

    Filesize

    6.9MB

  • memory/1636-8-0x0000000000B90000-0x0000000000B91000-memory.dmp

    Filesize

    4KB

  • memory/1636-9-0x0000000004F61000-0x0000000004F62000-memory.dmp

    Filesize

    4KB