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Analysis

  • max time kernel
    143s
  • max time network
    150s
  • platform
    windows7_x64
  • resource
    win7-20220414-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

  • CoreEntity .NET Packer 1 IoCs

    A .NET packer called CoreEntity where it has embedded the payload as a BitMap object which is later decrypted.

  • 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.

  • ReZer0 packer 1 IoCs

    Detects ReZer0, a packer with multiple versions used in various campaigns.

  • 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 15 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 13 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⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1260
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\DNdDTmnIdpat" /XML "C:\Users\Admin\AppData\Local\Temp\tmp63E2.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2016
    • 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:1996

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmp63E2.tmp

    Filesize

    1KB

    MD5

    656c5b02c7adbf30cf65f53958ef2b5a

    SHA1

    509c0c09e8ece33066b793ae986d88d7a2d78dd3

    SHA256

    c0cb82a47f7ab6404ef8e774332683057b7b97946417f60fd8363f8a12f796b5

    SHA512

    bc07bf52df3c5dfc8a2d3dc862998c28442cac609cfa74f16ba96d953395e5c4acef22a12e9e92471a6026ed002fdd4393ec652f135cb1cd4fbe5ce3ec8063a8

  • memory/1260-55-0x0000000075CE1000-0x0000000075CE3000-memory.dmp

    Filesize

    8KB

  • memory/1260-56-0x0000000000480000-0x0000000000488000-memory.dmp

    Filesize

    32KB

  • memory/1260-57-0x0000000005BD0000-0x0000000005C7E000-memory.dmp

    Filesize

    696KB

  • memory/1260-54-0x0000000000930000-0x0000000000A1A000-memory.dmp

    Filesize

    936KB

  • memory/1996-84-0x0000000000400000-0x00000000004A6000-memory.dmp

    Filesize

    664KB

  • memory/1996-88-0x0000000000400000-0x00000000004A6000-memory.dmp

    Filesize

    664KB

  • memory/1996-61-0x0000000000400000-0x00000000004A6000-memory.dmp

    Filesize

    664KB

  • memory/1996-63-0x0000000000400000-0x00000000004A6000-memory.dmp

    Filesize

    664KB

  • memory/1996-64-0x0000000000400000-0x00000000004A6000-memory.dmp

    Filesize

    664KB

  • memory/1996-65-0x0000000000400000-0x00000000004A6000-memory.dmp

    Filesize

    664KB

  • memory/1996-68-0x0000000000400000-0x00000000004A6000-memory.dmp

    Filesize

    664KB

  • memory/1996-70-0x0000000000400000-0x00000000004A6000-memory.dmp

    Filesize

    664KB

  • memory/1996-72-0x0000000000400000-0x00000000004A6000-memory.dmp

    Filesize

    664KB

  • memory/1996-74-0x0000000000400000-0x00000000004A6000-memory.dmp

    Filesize

    664KB

  • memory/1996-76-0x0000000000400000-0x00000000004A6000-memory.dmp

    Filesize

    664KB

  • memory/1996-78-0x0000000000400000-0x00000000004A6000-memory.dmp

    Filesize

    664KB

  • memory/1996-80-0x0000000000400000-0x00000000004A6000-memory.dmp

    Filesize

    664KB

  • memory/1996-82-0x0000000000400000-0x00000000004A6000-memory.dmp

    Filesize

    664KB

  • memory/1996-570-0x0000000002000000-0x0000000002044000-memory.dmp

    Filesize

    272KB

  • memory/1996-86-0x0000000000400000-0x00000000004A6000-memory.dmp

    Filesize

    664KB

  • memory/1996-60-0x0000000000400000-0x00000000004A6000-memory.dmp

    Filesize

    664KB

  • memory/1996-90-0x0000000000400000-0x00000000004A6000-memory.dmp

    Filesize

    664KB

  • memory/1996-92-0x0000000000400000-0x00000000004A6000-memory.dmp

    Filesize

    664KB

  • memory/1996-94-0x0000000000400000-0x00000000004A6000-memory.dmp

    Filesize

    664KB

  • memory/1996-96-0x0000000000400000-0x00000000004A6000-memory.dmp

    Filesize

    664KB

  • memory/1996-98-0x0000000000400000-0x00000000004A6000-memory.dmp

    Filesize

    664KB

  • memory/1996-100-0x0000000000400000-0x00000000004A6000-memory.dmp

    Filesize

    664KB

  • memory/1996-102-0x0000000000400000-0x00000000004A6000-memory.dmp

    Filesize

    664KB

  • memory/1996-104-0x0000000000400000-0x00000000004A6000-memory.dmp

    Filesize

    664KB

  • memory/1996-106-0x0000000000400000-0x00000000004A6000-memory.dmp

    Filesize

    664KB

  • memory/1996-108-0x0000000000400000-0x00000000004A6000-memory.dmp

    Filesize

    664KB

  • memory/1996-110-0x0000000000400000-0x00000000004A6000-memory.dmp

    Filesize

    664KB

  • memory/1996-112-0x0000000000400000-0x00000000004A6000-memory.dmp

    Filesize

    664KB

  • memory/1996-114-0x0000000000400000-0x00000000004A6000-memory.dmp

    Filesize

    664KB

  • memory/1996-116-0x0000000000400000-0x00000000004A6000-memory.dmp

    Filesize

    664KB

  • memory/1996-118-0x0000000000400000-0x00000000004A6000-memory.dmp

    Filesize

    664KB

  • memory/1996-120-0x0000000000400000-0x00000000004A6000-memory.dmp

    Filesize

    664KB

  • memory/1996-122-0x0000000000400000-0x00000000004A6000-memory.dmp

    Filesize

    664KB