Analysis

  • max time kernel
    101s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-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

  • 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.

  • 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\DHL Document.exe
    "C:\Users\Admin\AppData\Local\Temp\DHL Document.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4840
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\HxFYXTStYv" /XML "C:\Users\Admin\AppData\Local\Temp\tmpAA10.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:4912
    • 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:1148

Network

MITRE ATT&CK Matrix ATT&CK v6

Execution

Scheduled Task

1
T1053

Persistence

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Credential Access

Credentials in Files

1
T1081

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Collection

Data from Local System

1
T1005

Email Collection

1
T1114

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\DHL Document.exe.log
    Filesize

    1KB

    MD5

    8ec831f3e3a3f77e4a7b9cd32b48384c

    SHA1

    d83f09fd87c5bd86e045873c231c14836e76a05c

    SHA256

    7667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982

    SHA512

    26bffa2406b66368bd412bf25869a792631455645992cdcade2dbc13a2e56fb546414a6a9223b94c96c38d89187add6678d4779a88b38b0c9e36be8527b213c3

  • C:\Users\Admin\AppData\Local\Temp\tmpAA10.tmp
    Filesize

    1KB

    MD5

    83260c930595e4210e4ba347a65272d5

    SHA1

    38b1b0819f977c5fd0df876a0638be1a0e9c571f

    SHA256

    46119a84ce8ca9d579424900026cb192ded4a32f991eb3e8b3032f67b307e5ef

    SHA512

    73d879b0d46bd7e95c1887b77a87f6c53a0c84cf37764f380cd1a8b0fe02835699a0c05bdfb052dc9e923ae18ee8204e69f8bc69795c65118a8e00afe147b662

  • memory/1148-161-0x0000000000400000-0x00000000004A6000-memory.dmp
    Filesize

    664KB

  • memory/1148-187-0x0000000000400000-0x00000000004A6000-memory.dmp
    Filesize

    664KB

  • memory/1148-639-0x0000000008300000-0x0000000008350000-memory.dmp
    Filesize

    320KB

  • memory/1148-165-0x0000000000400000-0x00000000004A6000-memory.dmp
    Filesize

    664KB

  • memory/1148-638-0x0000000006570000-0x00000000065D6000-memory.dmp
    Filesize

    408KB

  • memory/1148-169-0x0000000000400000-0x00000000004A6000-memory.dmp
    Filesize

    664KB

  • memory/1148-138-0x0000000000400000-0x00000000004A6000-memory.dmp
    Filesize

    664KB

  • memory/1148-167-0x0000000000400000-0x00000000004A6000-memory.dmp
    Filesize

    664KB

  • memory/1148-141-0x0000000000400000-0x00000000004A6000-memory.dmp
    Filesize

    664KB

  • memory/1148-143-0x0000000000400000-0x00000000004A6000-memory.dmp
    Filesize

    664KB

  • memory/1148-145-0x0000000000400000-0x00000000004A6000-memory.dmp
    Filesize

    664KB

  • memory/1148-147-0x0000000000400000-0x00000000004A6000-memory.dmp
    Filesize

    664KB

  • memory/1148-149-0x0000000000400000-0x00000000004A6000-memory.dmp
    Filesize

    664KB

  • memory/1148-151-0x0000000000400000-0x00000000004A6000-memory.dmp
    Filesize

    664KB

  • memory/1148-153-0x0000000000400000-0x00000000004A6000-memory.dmp
    Filesize

    664KB

  • memory/1148-155-0x0000000000400000-0x00000000004A6000-memory.dmp
    Filesize

    664KB

  • memory/1148-157-0x0000000000400000-0x00000000004A6000-memory.dmp
    Filesize

    664KB

  • memory/1148-159-0x0000000000400000-0x00000000004A6000-memory.dmp
    Filesize

    664KB

  • memory/1148-201-0x0000000000400000-0x00000000004A6000-memory.dmp
    Filesize

    664KB

  • memory/1148-163-0x0000000000400000-0x00000000004A6000-memory.dmp
    Filesize

    664KB

  • memory/1148-199-0x0000000000400000-0x00000000004A6000-memory.dmp
    Filesize

    664KB

  • memory/1148-197-0x0000000000400000-0x00000000004A6000-memory.dmp
    Filesize

    664KB

  • memory/1148-137-0x0000000000000000-mapping.dmp
  • memory/1148-171-0x0000000000400000-0x00000000004A6000-memory.dmp
    Filesize

    664KB

  • memory/1148-173-0x0000000000400000-0x00000000004A6000-memory.dmp
    Filesize

    664KB

  • memory/1148-175-0x0000000000400000-0x00000000004A6000-memory.dmp
    Filesize

    664KB

  • memory/1148-177-0x0000000000400000-0x00000000004A6000-memory.dmp
    Filesize

    664KB

  • memory/1148-179-0x0000000000400000-0x00000000004A6000-memory.dmp
    Filesize

    664KB

  • memory/1148-181-0x0000000000400000-0x00000000004A6000-memory.dmp
    Filesize

    664KB

  • memory/1148-183-0x0000000000400000-0x00000000004A6000-memory.dmp
    Filesize

    664KB

  • memory/1148-185-0x0000000000400000-0x00000000004A6000-memory.dmp
    Filesize

    664KB

  • memory/1148-195-0x0000000000400000-0x00000000004A6000-memory.dmp
    Filesize

    664KB

  • memory/1148-189-0x0000000000400000-0x00000000004A6000-memory.dmp
    Filesize

    664KB

  • memory/1148-191-0x0000000000400000-0x00000000004A6000-memory.dmp
    Filesize

    664KB

  • memory/1148-193-0x0000000000400000-0x00000000004A6000-memory.dmp
    Filesize

    664KB

  • memory/4840-133-0x0000000005160000-0x000000000516A000-memory.dmp
    Filesize

    40KB

  • memory/4840-131-0x00000000057A0000-0x0000000005D44000-memory.dmp
    Filesize

    5.6MB

  • memory/4840-130-0x00000000006E0000-0x00000000007C2000-memory.dmp
    Filesize

    904KB

  • memory/4840-132-0x00000000051F0000-0x0000000005282000-memory.dmp
    Filesize

    584KB

  • memory/4840-134-0x0000000008E30000-0x0000000008ECC000-memory.dmp
    Filesize

    624KB

  • memory/4912-135-0x0000000000000000-mapping.dmp