Analysis

  • max time kernel
    56s
  • max time network
    45s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    21-05-2022 12:25

General

  • Target

    DHL_MAY_.exe

  • Size

    816KB

  • MD5

    4ea547efe0fcb7dde07eb2a9c6891040

  • SHA1

    f45314bf78ce40bb81df533dbd6861260a609c4f

  • SHA256

    cd5eeb8026313e1bcfff3db5c1e30ff15477427f16e23e885df3b57adceac0b6

  • SHA512

    77f30789b5f08bf67522228d5cc818ebd12b0f681bca1d7f4f3b3694deb67c6528e8390b435fca0cadcb722aa789bb0e966e6c4f2434382c3660192d54db2025

Malware Config

Extracted

Path

C:\Users\Admin\AppData\Local\Temp\3B8E3C2477\Log.txt

Family

masslogger

Ransom Note
################################################################# MassLogger v1.3.4.0 ################################################################# ### Logger Details ### User Name: Admin IP: 127.0.0.1 Location: United States OS: Microsoft Windows 7 Ultimate 64bit CPU: Intel Core Processor (Broadwell) GPU: Standard VGA Graphics Adapter AV: NA Screen Resolution: 1280x720 Current Time: 5/21/2022 3:08:47 PM MassLogger Started: 5/21/2022 3:08:04 PM Interval: 96 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\DHL_MAY_.exe MassLogger Melt: false MassLogger Exit after delivery: false As Administrator: True Processes:

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.

  • 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.

  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\DHL_MAY_.exe
    "C:\Users\Admin\AppData\Local\Temp\DHL_MAY_.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1792
    • C:\Users\Admin\AppData\Local\Temp\DHL_MAY_.exe
      "C:\Users\Admin\AppData\Local\Temp\DHL_MAY_.exe"
      2⤵
      • Checks computer location settings
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2044

Network

MITRE ATT&CK Matrix ATT&CK v6

Discovery

Query Registry

1
T1012

System Information Discovery

1
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/1792-54-0x0000000000090000-0x0000000000162000-memory.dmp
    Filesize

    840KB

  • memory/1792-55-0x0000000076461000-0x0000000076463000-memory.dmp
    Filesize

    8KB

  • memory/1792-56-0x00000000005F0000-0x00000000005F8000-memory.dmp
    Filesize

    32KB

  • memory/1792-57-0x00000000084A0000-0x0000000008558000-memory.dmp
    Filesize

    736KB

  • memory/2044-58-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/2044-59-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/2044-61-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/2044-62-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/2044-63-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/2044-64-0x00000000004ABEAE-mapping.dmp
  • memory/2044-66-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/2044-68-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/2044-70-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/2044-72-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/2044-74-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/2044-76-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/2044-78-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/2044-80-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/2044-82-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/2044-84-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/2044-86-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/2044-88-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/2044-90-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/2044-92-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/2044-94-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/2044-96-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/2044-98-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/2044-100-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/2044-102-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/2044-104-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/2044-106-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/2044-108-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/2044-110-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/2044-112-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/2044-114-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/2044-116-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/2044-118-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/2044-120-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/2044-577-0x0000000000640000-0x0000000000684000-memory.dmp
    Filesize

    272KB

  • memory/2044-579-0x0000000000705000-0x0000000000716000-memory.dmp
    Filesize

    68KB