Analysis

  • max time kernel
    125s
  • max time network
    139s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220310-en
  • submitted
    26-03-2022 11:34

General

  • Target

    710e05dc9f55ca98c442cc6b845aff85275d3045ee86768a9e894f572c87a246.exe

  • Size

    611KB

  • MD5

    b7037c17f1b5136c52fcc6f2e83bef5e

  • SHA1

    1b5fecb91e0e452b641b00e78776fc199069f0af

  • SHA256

    710e05dc9f55ca98c442cc6b845aff85275d3045ee86768a9e894f572c87a246

  • SHA512

    582cb305bff002facdbce10928f0441c9509a0f8c4f76e144b2efb9609ac5cc7280fe29f6710fc27ccb4286a72e0ca9c5e97049583adea5d929b8f6e48332327

Malware Config

Signatures

  • MassLogger

    Masslogger is a .NET stealer targeting passwords from browsers, email and cryptocurrency clients.

  • MassLogger Main Payload 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • 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 42 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
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\710e05dc9f55ca98c442cc6b845aff85275d3045ee86768a9e894f572c87a246.exe
    "C:\Users\Admin\AppData\Local\Temp\710e05dc9f55ca98c442cc6b845aff85275d3045ee86768a9e894f572c87a246.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4300
    • C:\Users\Admin\AppData\Local\Temp\710e05dc9f55ca98c442cc6b845aff85275d3045ee86768a9e894f572c87a246.exe
      "C:\Users\Admin\AppData\Local\Temp\710e05dc9f55ca98c442cc6b845aff85275d3045ee86768a9e894f572c87a246.exe"
      2⤵
      • Checks computer location settings
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • outlook_office_path
      • outlook_win_path
      PID:4144

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\710e05dc9f55ca98c442cc6b845aff85275d3045ee86768a9e894f572c87a246.exe.log

    Filesize

    1KB

    MD5

    b5291f3dcf2c13784e09a057f2e43d13

    SHA1

    fbb72f4b04269e0d35b1d9c29d02d63dbc7ad07e

    SHA256

    ad995b51344d71019f96fc3a424de00256065daad8595ff599f6849c87ae75ce

    SHA512

    11c89caac425bccaa24e2bb24c6f2b4e6d6863278bf8a5304a42bb44475b08ca586e09143e7d5b14db7f1cd9adacd5358769e0d999dc348073431031067bd4d4

  • memory/4144-143-0x0000000006240000-0x00000000062A6000-memory.dmp

    Filesize

    408KB

  • memory/4144-141-0x0000000000400000-0x0000000000486000-memory.dmp

    Filesize

    536KB

  • memory/4144-144-0x0000000004F93000-0x0000000004F95000-memory.dmp

    Filesize

    8KB

  • memory/4144-145-0x0000000006BB0000-0x0000000006C00000-memory.dmp

    Filesize

    320KB

  • memory/4144-146-0x0000000006CA0000-0x0000000006D3C000-memory.dmp

    Filesize

    624KB

  • memory/4300-136-0x00000000051B0000-0x0000000005242000-memory.dmp

    Filesize

    584KB

  • memory/4300-137-0x00000000050B0000-0x00000000050BA000-memory.dmp

    Filesize

    40KB

  • memory/4300-138-0x0000000006D00000-0x0000000006D76000-memory.dmp

    Filesize

    472KB

  • memory/4300-139-0x0000000006CC0000-0x0000000006CDE000-memory.dmp

    Filesize

    120KB

  • memory/4300-135-0x0000000009BD0000-0x000000000A174000-memory.dmp

    Filesize

    5.6MB

  • memory/4300-134-0x0000000000400000-0x000000000049E000-memory.dmp

    Filesize

    632KB