Analysis

  • max time kernel
    43s
  • max time network
    73s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    03-10-2022 08:18

General

  • Target

    65d79862897aa6653668df7643717ccb73ddda1f2677a3fcf38b7bcb25a60749.exe

  • Size

    42KB

  • MD5

    f9ca2b52d9ebce902d72c7c78c2a1e82

  • SHA1

    4fc6005acb6b1dc72900aac1932d60935be15946

  • SHA256

    65d79862897aa6653668df7643717ccb73ddda1f2677a3fcf38b7bcb25a60749

  • SHA512

    ff8a144facd24038b69e762fb0b0453057a0e43fb7bdc074c66cacd41e24c6ce1177ba9eafc3934abe83cc53c9201fcc6f81d69d552fae15e78dd3bf70eee5e0

  • SSDEEP

    768:oqQ1coge5b0duZwL71TjlcKZKfgm3EhSM:tSWlL71TSF7EIM

Malware Config

Extracted

Family

mercurialgrabber

C2

https://discord.com/api/webhooks/910977383102836756/gBUXTuE5IVFJiLF2Jt8l5DBa4WEv7Labk0HqghKUinIx_4qOAuAU_x1csAovNvb2vEcp

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\65d79862897aa6653668df7643717ccb73ddda1f2677a3fcf38b7bcb25a60749.exe
    "C:\Users\Admin\AppData\Local\Temp\65d79862897aa6653668df7643717ccb73ddda1f2677a3fcf38b7bcb25a60749.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:1768
    • C:\Windows\system32\WerFault.exe
      C:\Windows\system32\WerFault.exe -u -p 1768 -s 1952
      2⤵
      • Program crash
      PID:1016

Network

MITRE ATT&CK Matrix ATT&CK v6

Defense Evasion

Virtualization/Sandbox Evasion

2
T1497

Install Root Certificate

1
T1130

Modify Registry

1
T1112

Credential Access

Credentials in Files

1
T1081

Discovery

Query Registry

7
T1012

Virtualization/Sandbox Evasion

2
T1497

System Information Discovery

5
T1082

Peripheral Device Discovery

2
T1120

Collection

Data from Local System

1
T1005

Command and Control

Web Service

1
T1102

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/1016-55-0x0000000000000000-mapping.dmp
  • memory/1768-54-0x00000000000A0000-0x00000000000B0000-memory.dmp
    Filesize

    64KB