General

  • Target

    file.exe

  • Size

    879KB

  • Sample

    220919-hw3gyshdfk

  • MD5

    bd2b464bbcc0e12f585c3d300d4b7fc5

  • SHA1

    3fa46371470b2c92898e85e9b34f2462360f79be

  • SHA256

    144c0fcf6f803810d13f85bb4541c9916eb80e0d0d59bd24e03b5dd9159710df

  • SHA512

    c8fe242280f34b25fd96d2035f33c0fc06a33d887ce64717f4a4e5c8dd38b5e4bea38125563efb18f95696514d96fb0e4aae5433e49d6439c10f3e248cb1bf3a

  • SSDEEP

    24576:IKJ47SlzspERub0FCJVlvh7Ng6sCpgGMouSzNKkC1lMIftWkHvWA7:T45IftWkHvW

Malware Config

Extracted

Family

marsstealer

Botnet

Default

C2

gg.gemkan.online/gate.php

Targets

    • Target

      file.exe

    • Size

      879KB

    • MD5

      bd2b464bbcc0e12f585c3d300d4b7fc5

    • SHA1

      3fa46371470b2c92898e85e9b34f2462360f79be

    • SHA256

      144c0fcf6f803810d13f85bb4541c9916eb80e0d0d59bd24e03b5dd9159710df

    • SHA512

      c8fe242280f34b25fd96d2035f33c0fc06a33d887ce64717f4a4e5c8dd38b5e4bea38125563efb18f95696514d96fb0e4aae5433e49d6439c10f3e248cb1bf3a

    • SSDEEP

      24576:IKJ47SlzspERub0FCJVlvh7Ng6sCpgGMouSzNKkC1lMIftWkHvWA7:T45IftWkHvW

    • Mars Stealer

      An infostealer written in C++ based on other infostealers.

    • Detectes Phoenix Miner Payload

    • Downloads MZ/PE file

    • Executes dropped EXE

    • VMProtect packed file

      Detects executables packed with VMProtect commercial packer.

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Loads dropped DLL

    • Reads user/profile data of web browsers

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

    • Accesses cryptocurrency files/wallets, possible credential harvesting

    • Adds Run key to start application

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

    • Legitimate hosting services abused for malware hosting/C2

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

Modify Registry

2
T1112

Credential Access

Credentials in Files

2
T1081

Discovery

Query Registry

3
T1012

System Information Discovery

3
T1082

Collection

Data from Local System

2
T1005

Command and Control

Web Service

1
T1102

Tasks