Analysis

  • max time kernel
    122s
  • max time network
    124s
  • platform
    windows7_x64
  • resource
    win7-20240419-en
  • resource tags

    arch:x64arch:x86image:win7-20240419-enlocale:en-usos:windows7-x64system
  • submitted
    07-05-2024 20:46

General

  • Target

    fa854b73b477f55bd2faa482ba8e8fc4.exe

  • Size

    1.3MB

  • MD5

    fa854b73b477f55bd2faa482ba8e8fc4

  • SHA1

    056fb1cdf016ac6d510425ae4dc1693f257dc12e

  • SHA256

    905c7a4a098ad5c0fae3b8f15fa5fa56a06372b7441aede1958ae1171e555b2a

  • SHA512

    fe1b5c9c6a709b34687e35745bd7662aaff0bf816aedb4f59a68714c4797034e1472c667611eb10fb687916e899613fbb79d692a11cc5e074fce5a2ba1ee54c5

  • SSDEEP

    24576:ZtnIMSJmXTYznHLtEqzH+qrjQYgkIuIcDH7IueXN5CUaCWyOVyOckiAhUcMkiAhl:ZtIMvE7rtz7+q/QYgkIu3DHkuedz6rVl

Malware Config

Extracted

Family

stealc

C2

http://193.163.7.82

Attributes
  • url_path

    /722c81812703a73d.php

Signatures

  • Detects HijackLoader (aka IDAT Loader) 1 IoCs
  • HijackLoader

    HijackLoader is a multistage loader first seen in 2023.

  • Stealc

    Stealc is an infostealer written in C++.

  • Downloads MZ/PE file
  • Deletes itself 1 IoCs
  • Loads dropped DLL 2 IoCs
  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • Suspicious use of SetThreadContext 1 IoCs
  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 5 IoCs
  • Suspicious behavior: MapViewOfSection 2 IoCs
  • Suspicious use of WriteProcessMemory 10 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\fa854b73b477f55bd2faa482ba8e8fc4.exe
    "C:\Users\Admin\AppData\Local\Temp\fa854b73b477f55bd2faa482ba8e8fc4.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:1732
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\SysWOW64\cmd.exe
      2⤵
      • Deletes itself
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of WriteProcessMemory
      PID:1928
      • C:\Windows\SysWOW64\explorer.exe
        C:\Windows\SysWOW64\explorer.exe
        3⤵
        • Loads dropped DLL
        • Checks processor information in registry
        • Suspicious behavior: EnumeratesProcesses
        PID:2580

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\84494b49

    Filesize

    860KB

    MD5

    441e099c5a4a8225526874cc17958d6d

    SHA1

    9fad26a37d978dfef0951d113bb5f68fa5088b48

    SHA256

    fd417bbac268c9da5b15aa7c27d8ccf5b151c86b491e731c22aa4b5cfda1ae78

    SHA512

    d3fa98bf0b4c587837187a49901b40a0056f09d02e3e73c66f33c3f46d90ca18408059aa89ad230f352eb6d3903e17b25824cf05acfa58864a82c600cd480969

  • \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

  • memory/1732-0-0x0000000000400000-0x000000000055A000-memory.dmp

    Filesize

    1.4MB

  • memory/1732-1-0x0000000074F80000-0x00000000750F4000-memory.dmp

    Filesize

    1.5MB

  • memory/1732-2-0x0000000077980000-0x0000000077B29000-memory.dmp

    Filesize

    1.7MB

  • memory/1732-3-0x0000000074F92000-0x0000000074F94000-memory.dmp

    Filesize

    8KB

  • memory/1732-4-0x0000000074F80000-0x00000000750F4000-memory.dmp

    Filesize

    1.5MB

  • memory/1732-5-0x0000000074F80000-0x00000000750F4000-memory.dmp

    Filesize

    1.5MB

  • memory/1928-11-0x0000000074F80000-0x00000000750F4000-memory.dmp

    Filesize

    1.5MB

  • memory/1928-10-0x0000000074F80000-0x00000000750F4000-memory.dmp

    Filesize

    1.5MB

  • memory/1928-13-0x0000000074F80000-0x00000000750F4000-memory.dmp

    Filesize

    1.5MB

  • memory/1928-9-0x0000000077980000-0x0000000077B29000-memory.dmp

    Filesize

    1.7MB

  • memory/1928-7-0x0000000074F80000-0x00000000750F4000-memory.dmp

    Filesize

    1.5MB

  • memory/2580-14-0x0000000000400000-0x000000000063C000-memory.dmp

    Filesize

    2.2MB

  • memory/2580-15-0x0000000077980000-0x0000000077B29000-memory.dmp

    Filesize

    1.7MB

  • memory/2580-16-0x0000000000400000-0x000000000063C000-memory.dmp

    Filesize

    2.2MB

  • memory/2580-18-0x0000000000F40000-0x0000000000F48000-memory.dmp

    Filesize

    32KB

  • memory/2580-19-0x0000000000F10000-0x0000000001191000-memory.dmp

    Filesize

    2.5MB

  • memory/2580-20-0x0000000061E00000-0x0000000061EF3000-memory.dmp

    Filesize

    972KB

  • memory/2580-52-0x0000000000400000-0x000000000063C000-memory.dmp

    Filesize

    2.2MB

  • memory/2580-77-0x0000000000400000-0x000000000063C000-memory.dmp

    Filesize

    2.2MB