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Analysis

  • max time kernel
    59s
  • max time network
    162s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    19/10/2022, 06:10

General

  • Target

    Withdrawal Authorization Letter.exe

  • Size

    882KB

  • MD5

    ab51fcab2443142fb70bb50872407815

  • SHA1

    c50331ac38b78963d45230c57927c18be34638e9

  • SHA256

    1f9a0cce25f1860e53b471745a001b8d868ce4d96c3d5365c6c3d39c8b7ceb04

  • SHA512

    2d7f8c53add06e86528d12899565ee0c848f20903c9092b2bff1e3a4c842343fd82c66801d43e90bf0e111b9465bd59bffe5f8619daf989631954f92b3c64756

  • SSDEEP

    12288:i6WTGfEuEKW/CyXfwA/7k35yVHLnVheEEcIc/aZLBNcKii/ARh:eZKwCkfL/AGqHlciugg

Malware Config

Extracted

Family

snakekeylogger

Credentials

Signatures

  • Snake Keylogger

    Keylogger and Infostealer first seen in November 2020.

  • Snake Keylogger payload 6 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.

  • Accesses Microsoft Outlook profiles 1 TTPs 3 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
  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Withdrawal Authorization Letter.exe
    "C:\Users\Admin\AppData\Local\Temp\Withdrawal Authorization Letter.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1960
    • C:\Users\Admin\AppData\Local\Temp\Withdrawal Authorization Letter.exe
      "C:\Users\Admin\AppData\Local\Temp\Withdrawal Authorization Letter.exe"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:1728

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/1728-65-0x0000000000400000-0x0000000000426000-memory.dmp

    Filesize

    152KB

  • memory/1728-71-0x0000000000400000-0x0000000000426000-memory.dmp

    Filesize

    152KB

  • memory/1728-61-0x0000000000400000-0x0000000000426000-memory.dmp

    Filesize

    152KB

  • memory/1728-66-0x0000000000400000-0x0000000000426000-memory.dmp

    Filesize

    152KB

  • memory/1728-60-0x0000000000400000-0x0000000000426000-memory.dmp

    Filesize

    152KB

  • memory/1728-63-0x0000000000400000-0x0000000000426000-memory.dmp

    Filesize

    152KB

  • memory/1728-69-0x0000000000400000-0x0000000000426000-memory.dmp

    Filesize

    152KB

  • memory/1960-55-0x0000000074AB1000-0x0000000074AB3000-memory.dmp

    Filesize

    8KB

  • memory/1960-54-0x0000000001330000-0x0000000001414000-memory.dmp

    Filesize

    912KB

  • memory/1960-59-0x0000000004B70000-0x0000000004B98000-memory.dmp

    Filesize

    160KB

  • memory/1960-58-0x0000000000B50000-0x0000000000BD2000-memory.dmp

    Filesize

    520KB

  • memory/1960-57-0x0000000000510000-0x000000000051C000-memory.dmp

    Filesize

    48KB

  • memory/1960-56-0x0000000000A20000-0x0000000000A38000-memory.dmp

    Filesize

    96KB