Analysis

  • max time kernel
    118s
  • max time network
    119s
  • platform
    windows7_x64
  • resource
    win7-20240215-en
  • resource tags

    arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
  • submitted
    28-03-2024 02:27

General

  • Target

    9120566b5096fc5643a1b64c2ef29fd034c245d52ec244cdf06b6e312e299acf.exe

  • Size

    252KB

  • MD5

    22b7e30240f2ba7b9f8dc28b8ca8a3e8

  • SHA1

    e6ff3a623345ff800c3b5cfed45375face9c9a64

  • SHA256

    9120566b5096fc5643a1b64c2ef29fd034c245d52ec244cdf06b6e312e299acf

  • SHA512

    20fc8a81d5c3b1ce2abc243c5f046c999f7a904f065a5495334ec10a07fa60b0232c44b42cfb7a7319987852333997658fadc37b877d2d44449949b80d7d5f35

  • SSDEEP

    6144:OvcdMCQi9IKtAEdht4fTPnVujyu7P7uHyl64:9dMCh9IKqEle5uT7uHc

Malware Config

Extracted

Family

stealc

C2

http://185.172.128.26

Attributes
  • url_path

    /f993692117a3fda2.php

Signatures

  • Stealc

    Stealc is an infostealer written in C++.

  • Detect binaries embedding considerable number of MFA browser extension IDs. 3 IoCs
  • Detect binaries embedding considerable number of cryptocurrency wallet browser extension IDs. 3 IoCs
  • Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers. 2 IoCs
  • Downloads MZ/PE file
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 3 IoCs
  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • Reads user/profile data of web browsers 2 TTPs

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

  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • Checks installed software on the system 1 TTPs

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

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of WriteProcessMemory 16 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\9120566b5096fc5643a1b64c2ef29fd034c245d52ec244cdf06b6e312e299acf.exe
    "C:\Users\Admin\AppData\Local\Temp\9120566b5096fc5643a1b64c2ef29fd034c245d52ec244cdf06b6e312e299acf.exe"
    1⤵
    • Loads dropped DLL
    • Checks processor information in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:2980
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" /c start "" "C:\Users\Admin\AppData\Local\Temp\CGDHDHJEBG.exe"
      2⤵
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:2776
      • C:\Users\Admin\AppData\Local\Temp\CGDHDHJEBG.exe
        "C:\Users\Admin\AppData\Local\Temp\CGDHDHJEBG.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of WriteProcessMemory
        PID:1448
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /C ping 2.2.2.2 -n 1 -w 3000 > Nul & Del C:\Users\Admin\AppData\Local\Temp\CGDHDHJEBG.exe
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:276
          • C:\Windows\SysWOW64\PING.EXE
            ping 2.2.2.2 -n 1 -w 3000
            5⤵
            • Runs ping.exe
            PID:2016

Network

MITRE ATT&CK Matrix ATT&CK v13

Credential Access

Unsecured Credentials

3
T1552

Credentials In Files

3
T1552.001

Discovery

Query Registry

2
T1012

System Information Discovery

2
T1082

Remote System Discovery

1
T1018

Collection

Data from Local System

3
T1005

Replay Monitor

Loading Replay Monitor...

Downloads

  • \ProgramData\mozglue.dll
    Filesize

    593KB

    MD5

    c8fd9be83bc728cc04beffafc2907fe9

    SHA1

    95ab9f701e0024cedfbd312bcfe4e726744c4f2e

    SHA256

    ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a

    SHA512

    fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040

  • \ProgramData\nss3.dll
    Filesize

    2.0MB

    MD5

    1cc453cdf74f31e4d913ff9c10acdde2

    SHA1

    6e85eae544d6e965f15fa5c39700fa7202f3aafe

    SHA256

    ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5

    SHA512

    dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571

  • \Users\Admin\AppData\Local\Temp\CGDHDHJEBG.exe
    Filesize

    106KB

    MD5

    fe380780b5c35bd6d54541791151c2be

    SHA1

    7fe3a583cf91474c733f85cebf3c857682e269e1

    SHA256

    b64a84d1f88e4e78464a1901c1cb5bbd5f00bb73203d719e64e072157a087b53

    SHA512

    ba05ba8aa13c4bc1cf98fbf6c08b021e8b19354098e0397fc8e1e5d3dcce367c1063203f24e50d0973193f6535681d0a43486e5dade5d112853b7a2fe8739b6c

  • memory/1448-81-0x0000000074950000-0x000000007503E000-memory.dmp
    Filesize

    6.9MB

  • memory/1448-79-0x0000000004D40000-0x0000000004D80000-memory.dmp
    Filesize

    256KB

  • memory/1448-78-0x0000000074950000-0x000000007503E000-memory.dmp
    Filesize

    6.9MB

  • memory/1448-77-0x0000000000F30000-0x0000000000F50000-memory.dmp
    Filesize

    128KB

  • memory/2980-4-0x0000000061E00000-0x0000000061EF3000-memory.dmp
    Filesize

    972KB

  • memory/2980-73-0x0000000000800000-0x0000000000900000-memory.dmp
    Filesize

    1024KB

  • memory/2980-72-0x0000000000400000-0x000000000063B000-memory.dmp
    Filesize

    2.2MB

  • memory/2980-67-0x0000000000400000-0x000000000063B000-memory.dmp
    Filesize

    2.2MB

  • memory/2980-2-0x0000000000230000-0x0000000000257000-memory.dmp
    Filesize

    156KB

  • memory/2980-3-0x0000000000400000-0x000000000063B000-memory.dmp
    Filesize

    2.2MB

  • memory/2980-1-0x0000000000800000-0x0000000000900000-memory.dmp
    Filesize

    1024KB