Analysis

  • max time kernel
    100s
  • max time network
    103s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    25-08-2022 10:04

General

  • Target

    dawmcro.exe

  • Size

    42KB

  • MD5

    20fdace2b2e31d703355e8cb67ff6fbd

  • SHA1

    f0edc5f4844b2ede8815d9d800a5a5d870226a7d

  • SHA256

    7890dd5b3323bd32f21aea8f61343a1d7b5d487f6d9081b4566051e428a58379

  • SHA512

    9049a0c7c8172e43a560268140f8340c3dc3101c2b9a8e44bc7fb78b6a02608f1fb9e6fcbdf1d20e6798b2ef6f2e0fedda3c8ed1fb2eb7148749202fa56ba257

  • SSDEEP

    768:B+m6ERp2NGFpuZYNLsWTjCKZKfgm3EhyM:BRpAGXLsWT+F7EgM

Malware Config

Extracted

Family

mercurialgrabber

C2

https://discord.com/api/webhooks/971211548544618506/14fNrE_WgfMdX-C1GRaEBZFXaq4YJP6FiYBNoZBmzVXQtH76hGEshw8B-Tczk-M6JPkm

Signatures

  • Mercurial Grabber Stealer

    Mercurial Grabber is an open source stealer targeting Chrome, Discord and some game clients as well as generic system information.

  • Looks for VirtualBox Guest Additions in registry 2 TTPs 1 IoCs
  • Looks for VMWare Tools registry key 2 TTPs 1 IoCs
  • Checks BIOS information in registry 2 TTPs 1 IoCs

    BIOS information is often read in order to detect sandboxing environments.

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • Looks up external IP address via web service 3 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Maps connected drives based on registry 3 TTPs 2 IoCs

    Disk information is often read in order to detect sandboxing environments.

  • Program crash 1 IoCs
  • Checks SCSI registry key(s) 3 TTPs 1 IoCs

    SCSI information is often read in order to detect sandboxing environments.

  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Enumerates system info in registry 2 TTPs 4 IoCs
  • Modifies system certificate store 2 TTPs 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\dawmcro.exe
    "C:\Users\Admin\AppData\Local\Temp\dawmcro.exe"
    1⤵
    • Looks for VirtualBox Guest Additions in registry
    • Looks for VMWare Tools registry key
    • Checks BIOS information in registry
    • Maps connected drives based on registry
    • Checks SCSI registry key(s)
    • Checks processor information in registry
    • Enumerates system info in registry
    • Modifies system certificate store
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1424
    • C:\Windows\system32\WerFault.exe
      C:\Windows\system32\WerFault.exe -u -p 1424 -s 1908
      2⤵
      • Program crash
      PID:1808

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/1424-54-0x0000000000260000-0x0000000000270000-memory.dmp

    Filesize

    64KB

  • memory/1808-55-0x0000000000000000-mapping.dmp