Analysis

  • max time kernel
    127s
  • max time network
    131s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    21-05-2022 01:35

General

  • Target

    DHL Document.exe

  • Size

    877KB

  • MD5

    8667413de7acc939e5157862390e49ca

  • SHA1

    e09365296e8bcb1d1842032d3e31d2b6e880a75e

  • SHA256

    d2aba15a355f2587296a0d3de5416fe3ad7a644aaf39e9b8c5be0125a346abc6

  • SHA512

    0e64a10bd8925cc5f4be46c2d9ee4f0d5dac8e482ff86b5658d198ed7b30732e138e2b48e5a136d6269b8ee4c357e6454b31d184402c0477ac2985180c02ba3a

Malware Config

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    mail.privateemail.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    1234567890

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 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
  • 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\DHL Document.exe
    "C:\Users\Admin\AppData\Local\Temp\DHL Document.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1080
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\HxFYXTStYv" /XML "C:\Users\Admin\AppData\Local\Temp\tmp14BA.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:956
    • C:\Users\Admin\AppData\Local\Temp\DHL Document.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:1572

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmp14BA.tmp
    Filesize

    1KB

    MD5

    d8d3288744cd8babdbdaba85b18e9a21

    SHA1

    004a35351ce566575e265a5a35fd363364075049

    SHA256

    ef6626b40b1317965fc4272b7fe636828fb670dcc89b29a1879add3d8cb0bec2

    SHA512

    b8c5ade2a46c978502795e904790f7b6e24d355f9f8d896bad9b1cbfbf63dab669ce5bcd8cad063f6c34cdf8097225b1dbfcb95b6df92d2031811394f82b8074

  • memory/956-58-0x0000000000000000-mapping.dmp
  • memory/1080-54-0x0000000000B50000-0x0000000000C32000-memory.dmp
    Filesize

    904KB

  • memory/1080-55-0x00000000755C1000-0x00000000755C3000-memory.dmp
    Filesize

    8KB

  • memory/1080-56-0x00000000003C0000-0x00000000003C8000-memory.dmp
    Filesize

    32KB

  • memory/1080-57-0x0000000005C20000-0x0000000005CCE000-memory.dmp
    Filesize

    696KB

  • memory/1572-84-0x0000000000400000-0x00000000004A6000-memory.dmp
    Filesize

    664KB

  • memory/1572-90-0x0000000000400000-0x00000000004A6000-memory.dmp
    Filesize

    664KB

  • memory/1572-63-0x0000000000400000-0x00000000004A6000-memory.dmp
    Filesize

    664KB

  • memory/1572-64-0x0000000000400000-0x00000000004A6000-memory.dmp
    Filesize

    664KB

  • memory/1572-65-0x0000000000400000-0x00000000004A6000-memory.dmp
    Filesize

    664KB

  • memory/1572-66-0x00000000004A14BE-mapping.dmp
  • memory/1572-68-0x0000000000400000-0x00000000004A6000-memory.dmp
    Filesize

    664KB

  • memory/1572-70-0x0000000000400000-0x00000000004A6000-memory.dmp
    Filesize

    664KB

  • memory/1572-72-0x0000000000400000-0x00000000004A6000-memory.dmp
    Filesize

    664KB

  • memory/1572-74-0x0000000000400000-0x00000000004A6000-memory.dmp
    Filesize

    664KB

  • memory/1572-76-0x0000000000400000-0x00000000004A6000-memory.dmp
    Filesize

    664KB

  • memory/1572-78-0x0000000000400000-0x00000000004A6000-memory.dmp
    Filesize

    664KB

  • memory/1572-80-0x0000000000400000-0x00000000004A6000-memory.dmp
    Filesize

    664KB

  • memory/1572-82-0x0000000000400000-0x00000000004A6000-memory.dmp
    Filesize

    664KB

  • memory/1572-60-0x0000000000400000-0x00000000004A6000-memory.dmp
    Filesize

    664KB

  • memory/1572-86-0x0000000000400000-0x00000000004A6000-memory.dmp
    Filesize

    664KB

  • memory/1572-88-0x0000000000400000-0x00000000004A6000-memory.dmp
    Filesize

    664KB

  • memory/1572-61-0x0000000000400000-0x00000000004A6000-memory.dmp
    Filesize

    664KB

  • memory/1572-92-0x0000000000400000-0x00000000004A6000-memory.dmp
    Filesize

    664KB

  • memory/1572-94-0x0000000000400000-0x00000000004A6000-memory.dmp
    Filesize

    664KB

  • memory/1572-96-0x0000000000400000-0x00000000004A6000-memory.dmp
    Filesize

    664KB

  • memory/1572-98-0x0000000000400000-0x00000000004A6000-memory.dmp
    Filesize

    664KB

  • memory/1572-100-0x0000000000400000-0x00000000004A6000-memory.dmp
    Filesize

    664KB

  • memory/1572-102-0x0000000000400000-0x00000000004A6000-memory.dmp
    Filesize

    664KB

  • memory/1572-104-0x0000000000400000-0x00000000004A6000-memory.dmp
    Filesize

    664KB

  • memory/1572-106-0x0000000000400000-0x00000000004A6000-memory.dmp
    Filesize

    664KB

  • memory/1572-108-0x0000000000400000-0x00000000004A6000-memory.dmp
    Filesize

    664KB

  • memory/1572-110-0x0000000000400000-0x00000000004A6000-memory.dmp
    Filesize

    664KB

  • memory/1572-112-0x0000000000400000-0x00000000004A6000-memory.dmp
    Filesize

    664KB

  • memory/1572-114-0x0000000000400000-0x00000000004A6000-memory.dmp
    Filesize

    664KB

  • memory/1572-116-0x0000000000400000-0x00000000004A6000-memory.dmp
    Filesize

    664KB

  • memory/1572-118-0x0000000000400000-0x00000000004A6000-memory.dmp
    Filesize

    664KB

  • memory/1572-120-0x0000000000400000-0x00000000004A6000-memory.dmp
    Filesize

    664KB

  • memory/1572-122-0x0000000000400000-0x00000000004A6000-memory.dmp
    Filesize

    664KB

  • memory/1572-570-0x00000000004D0000-0x0000000000514000-memory.dmp
    Filesize

    272KB