Analysis

  • max time kernel
    132s
  • max time network
    161s
  • platform
    windows10_x64
  • resource
    win10-en-20211014
  • submitted
    02-12-2021 08:50

General

  • Target

    209876543456789000098.exe

  • Size

    793KB

  • MD5

    70ce5952a189b5eb3b5a67170981fb93

  • SHA1

    ff3197ef1584ead3e7c2a39c1ac50591f8b2412f

  • SHA256

    a1183aa0c74ad8ad4cd678ba674d3ca9cb88c325bf4a585521d1d2fef6769dd1

  • SHA512

    7a9d78c3efb3f484f25d0064920cf02e653820a9a968a6cb09900668817b3bdecff94e3ea38328aceb98f1f758a6e1cd6c125d6c0dbb49ee47cf2ff10dbda175

Malware Config

Signatures

  • Snake Keylogger

    Keylogger and Infostealer first seen in November 2020.

  • Snake Keylogger Payload 3 IoCs
  • Loads dropped DLL 1 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
  • Drops desktop.ini file(s) 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
  • Drops file in Windows directory 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 10 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\209876543456789000098.exe
    "C:\Users\Admin\AppData\Local\Temp\209876543456789000098.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:3364
    • C:\Users\Admin\AppData\Local\Temp\209876543456789000098.exe
      "C:\Users\Admin\AppData\Local\Temp\209876543456789000098.exe"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Drops desktop.ini file(s)
      • Drops file in Windows directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:1300

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • \Users\Admin\AppData\Local\Temp\nsm6F2.tmp\ysfakytiqpl.dll

    MD5

    38315ac552c55973b0afc343a8411c56

    SHA1

    906248270e5822af3ba11dd177092d361fd48725

    SHA256

    94ab25e60d15406eec7e07e214ec6cabfcec08d00f838e9698130100f95e9faa

    SHA512

    548e0f4fa208bca0d0ef427c955fd26971fa0140f83c365785c6461a8b51fdf942df634e67b813f8ff1f709e89b4cf17e71d07af316fdf6a236060206a15ae47

  • memory/1300-119-0x0000000000400000-0x000000000048B000-memory.dmp

    Filesize

    556KB

  • memory/1300-120-0x000000000040188B-mapping.dmp

  • memory/1300-121-0x0000000000400000-0x000000000048B000-memory.dmp

    Filesize

    556KB

  • memory/1300-122-0x00000000022F0000-0x00000000022F1000-memory.dmp

    Filesize

    4KB

  • memory/1300-124-0x00000000022F2000-0x00000000022F4000-memory.dmp

    Filesize

    8KB

  • memory/1300-123-0x00000000022F1000-0x00000000022F2000-memory.dmp

    Filesize

    4KB

  • memory/1300-125-0x00000000022F7000-0x00000000022F8000-memory.dmp

    Filesize

    4KB

  • memory/1300-126-0x00000000022F8000-0x00000000022F9000-memory.dmp

    Filesize

    4KB