Analysis

  • max time kernel
    69s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23-11-2022 12:02

General

  • Target

    MV ASPL TBN.exe

  • Size

    166KB

  • MD5

    28fa19adec2fa9a8d1e8d67310d58f0b

  • SHA1

    58e964eec035d120bfdd5c8968f227fc516f8893

  • SHA256

    9c0cab2fc38f52243eff7e3fa43e088d76b0a77d1253230c0d9b28c8f64f611d

  • SHA512

    f61c3ce86850e2ccb50fb2555229b52f0300088294e7f419169a4d309ef0c63807e7cb12bc47fe04d78e7b1b2fb71952c08483c17119d439138d17695435226d

  • SSDEEP

    384:eHHVieHKQN6dmOSACCB0W77EldnvGNDj:eHH5N64OSACCBSdnvGNn

Malware Config

Signatures

  • Snake Keylogger

    Keylogger and Infostealer first seen in November 2020.

  • Snake Keylogger payload 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • 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.

  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Looks up external IP address via web service 1 IoCs

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

  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\MV ASPL TBN.exe
    "C:\Users\Admin\AppData\Local\Temp\MV ASPL TBN.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1716
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc UwB0AGEAcgB0AC0AUwBsAGUAZQBwACAALQBTAGUAYwBvAG4AZABzACAAMwAwAA==
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:240
    • C:\Users\Admin\AppData\Local\Temp\MV ASPL TBN.exe
      "C:\Users\Admin\AppData\Local\Temp\MV ASPL TBN.exe"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:3788

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\MV ASPL TBN.exe.log

    Filesize

    1KB

    MD5

    026fb31495d30e5dbfd00f398c2efbf8

    SHA1

    9cda8f5f58129e4d592ca1b9867835c86f38ab1b

    SHA256

    b008f16eeae90b4c6ba119fb308616c0795cdaca51adf2b64470a0c01aeeb8b7

    SHA512

    6d1cc01c90613522cfb7be7ea67ff03732b367dfc7bfd245ad6d7ea8e5e5def431b3339d17893b7b193cee2c3b4c22a459acd3d852ee88fce711e30c5af195a1

  • memory/240-140-0x0000000005AE0000-0x0000000005B46000-memory.dmp

    Filesize

    408KB

  • memory/240-137-0x0000000002810000-0x0000000002846000-memory.dmp

    Filesize

    216KB

  • memory/240-141-0x0000000006150000-0x000000000616E000-memory.dmp

    Filesize

    120KB

  • memory/240-136-0x0000000000000000-mapping.dmp

  • memory/240-143-0x0000000006640000-0x000000000665A000-memory.dmp

    Filesize

    104KB

  • memory/240-138-0x0000000005300000-0x0000000005928000-memory.dmp

    Filesize

    6.2MB

  • memory/240-139-0x0000000005290000-0x00000000052F6000-memory.dmp

    Filesize

    408KB

  • memory/240-142-0x00000000077E0000-0x0000000007E5A000-memory.dmp

    Filesize

    6.5MB

  • memory/1716-135-0x0000000005A80000-0x0000000005AA2000-memory.dmp

    Filesize

    136KB

  • memory/1716-134-0x0000000006000000-0x00000000065A4000-memory.dmp

    Filesize

    5.6MB

  • memory/1716-132-0x0000000000360000-0x0000000000390000-memory.dmp

    Filesize

    192KB

  • memory/1716-133-0x00000000059B0000-0x0000000005A42000-memory.dmp

    Filesize

    584KB

  • memory/3788-144-0x0000000000000000-mapping.dmp

  • memory/3788-145-0x0000000000400000-0x0000000000426000-memory.dmp

    Filesize

    152KB

  • memory/3788-147-0x00000000056E0000-0x000000000577C000-memory.dmp

    Filesize

    624KB

  • memory/3788-148-0x00000000069D0000-0x0000000006B92000-memory.dmp

    Filesize

    1.8MB

  • memory/3788-149-0x0000000006990000-0x000000000699A000-memory.dmp

    Filesize

    40KB