Analysis

  • max time kernel
    101s
  • max time network
    163s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    21-05-2022 03:34

General

  • Target

    Alfa Bank 052020.exe

  • Size

    912KB

  • MD5

    84944bb019baca46b4a6e8beada5b97d

  • SHA1

    6f7ff04ddbacea914bc620e0bcb55f8809db674a

  • SHA256

    d9a20b5a29f7c7a81854af1fb1dfe50dc63ec6026d07d271b1d3be30b061ca0f

  • SHA512

    d375bc4e98153edf4b7799ba90d03ea425357ee2a043b7f883d19ce2cb4e1dc21fff501b355d4ca1ee70a357209e0ef505f2f7958dc87b07d94dd23df6be7ca2

Malware Config

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.privateemail.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    Protected@123

Signatures

  • MassLogger

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

  • MassLogger Main Payload 32 IoCs
  • MassLogger log file 1 IoCs

    Detects a log file produced by MassLogger.

  • Checks computer location settings 2 TTPs 2 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 18 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.

  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Alfa Bank 052020.exe
    "C:\Users\Admin\AppData\Local\Temp\Alfa Bank 052020.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:5092
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\DNdDTmnIdpat" /XML "C:\Users\Admin\AppData\Local\Temp\tmp29A0.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:656
    • C:\Users\Admin\AppData\Local\Temp\Alfa Bank 052020.exe
      "{path}"
      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:4456

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\Alfa Bank 052020.exe.log

    Filesize

    1KB

    MD5

    8ec831f3e3a3f77e4a7b9cd32b48384c

    SHA1

    d83f09fd87c5bd86e045873c231c14836e76a05c

    SHA256

    7667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982

    SHA512

    26bffa2406b66368bd412bf25869a792631455645992cdcade2dbc13a2e56fb546414a6a9223b94c96c38d89187add6678d4779a88b38b0c9e36be8527b213c3

  • C:\Users\Admin\AppData\Local\Temp\tmp29A0.tmp

    Filesize

    1KB

    MD5

    ceed504e0fa3c7fc348801e33fc415de

    SHA1

    dd2920629b99e3e64d3c7b045e6754f69aecee4e

    SHA256

    6208d3c6cc0963a07acfe3d9d36e5380cb14dd2fdc681eff0d9589163a253ba0

    SHA512

    1eb98439ebd226b568133367986036dfeeb2af9e45624c744b78ac071593e548cd902d7c55d934ad78f35a9402d9475929d39ef8a3cd50e5acb9f0eed0b676da

  • memory/656-135-0x0000000000000000-mapping.dmp

  • memory/4456-162-0x0000000000400000-0x00000000004A6000-memory.dmp

    Filesize

    664KB

  • memory/4456-196-0x0000000000400000-0x00000000004A6000-memory.dmp

    Filesize

    664KB

  • memory/4456-638-0x0000000007C00000-0x0000000007C50000-memory.dmp

    Filesize

    320KB

  • memory/4456-637-0x0000000006710000-0x0000000006776000-memory.dmp

    Filesize

    408KB

  • memory/4456-137-0x0000000000000000-mapping.dmp

  • memory/4456-138-0x0000000000400000-0x00000000004A6000-memory.dmp

    Filesize

    664KB

  • memory/4456-164-0x0000000000400000-0x00000000004A6000-memory.dmp

    Filesize

    664KB

  • memory/4456-142-0x0000000000400000-0x00000000004A6000-memory.dmp

    Filesize

    664KB

  • memory/4456-144-0x0000000000400000-0x00000000004A6000-memory.dmp

    Filesize

    664KB

  • memory/4456-146-0x0000000000400000-0x00000000004A6000-memory.dmp

    Filesize

    664KB

  • memory/4456-148-0x0000000000400000-0x00000000004A6000-memory.dmp

    Filesize

    664KB

  • memory/4456-150-0x0000000000400000-0x00000000004A6000-memory.dmp

    Filesize

    664KB

  • memory/4456-152-0x0000000000400000-0x00000000004A6000-memory.dmp

    Filesize

    664KB

  • memory/4456-154-0x0000000000400000-0x00000000004A6000-memory.dmp

    Filesize

    664KB

  • memory/4456-156-0x0000000000400000-0x00000000004A6000-memory.dmp

    Filesize

    664KB

  • memory/4456-158-0x0000000000400000-0x00000000004A6000-memory.dmp

    Filesize

    664KB

  • memory/4456-160-0x0000000000400000-0x00000000004A6000-memory.dmp

    Filesize

    664KB

  • memory/4456-168-0x0000000000400000-0x00000000004A6000-memory.dmp

    Filesize

    664KB

  • memory/4456-140-0x0000000000400000-0x00000000004A6000-memory.dmp

    Filesize

    664KB

  • memory/4456-200-0x0000000000400000-0x00000000004A6000-memory.dmp

    Filesize

    664KB

  • memory/4456-198-0x0000000000400000-0x00000000004A6000-memory.dmp

    Filesize

    664KB

  • memory/4456-170-0x0000000000400000-0x00000000004A6000-memory.dmp

    Filesize

    664KB

  • memory/4456-172-0x0000000000400000-0x00000000004A6000-memory.dmp

    Filesize

    664KB

  • memory/4456-174-0x0000000000400000-0x00000000004A6000-memory.dmp

    Filesize

    664KB

  • memory/4456-176-0x0000000000400000-0x00000000004A6000-memory.dmp

    Filesize

    664KB

  • memory/4456-178-0x0000000000400000-0x00000000004A6000-memory.dmp

    Filesize

    664KB

  • memory/4456-180-0x0000000000400000-0x00000000004A6000-memory.dmp

    Filesize

    664KB

  • memory/4456-182-0x0000000000400000-0x00000000004A6000-memory.dmp

    Filesize

    664KB

  • memory/4456-184-0x0000000000400000-0x00000000004A6000-memory.dmp

    Filesize

    664KB

  • memory/4456-186-0x0000000000400000-0x00000000004A6000-memory.dmp

    Filesize

    664KB

  • memory/4456-188-0x0000000000400000-0x00000000004A6000-memory.dmp

    Filesize

    664KB

  • memory/4456-190-0x0000000000400000-0x00000000004A6000-memory.dmp

    Filesize

    664KB

  • memory/4456-192-0x0000000000400000-0x00000000004A6000-memory.dmp

    Filesize

    664KB

  • memory/4456-194-0x0000000000400000-0x00000000004A6000-memory.dmp

    Filesize

    664KB

  • memory/4456-166-0x0000000000400000-0x00000000004A6000-memory.dmp

    Filesize

    664KB

  • memory/5092-130-0x0000000000640000-0x000000000072A000-memory.dmp

    Filesize

    936KB

  • memory/5092-134-0x0000000008D20000-0x0000000008DBC000-memory.dmp

    Filesize

    624KB

  • memory/5092-132-0x00000000050D0000-0x0000000005162000-memory.dmp

    Filesize

    584KB

  • memory/5092-133-0x0000000005270000-0x000000000527A000-memory.dmp

    Filesize

    40KB

  • memory/5092-131-0x0000000005680000-0x0000000005C24000-memory.dmp

    Filesize

    5.6MB