Analysis

  • max time kernel
    55s
  • max time network
    52s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    17-02-2023 13:07

General

  • Target

    file.exe

  • Size

    368KB

  • MD5

    3cf860c04441652062810209fc5d0646

  • SHA1

    7e7a428fa5900a23378f124576c9e3eaddcd0712

  • SHA256

    1412834388380f678cedd1859951adef8bd6de45dad85373c0ca447ed99ab66c

  • SHA512

    0bb65c317a3189906e1d8dea0b8e5efaf8cb2268c9b804e8d82223b98afab27a5252408a5d935147f8342bf7ecc2efafa2188b4ce50554682f2dda0325569538

  • SSDEEP

    6144:7KpfzMTkFpYnOOeV4mR+OO83puRqHMFatWMYwzbkL2U5dCkJR:7KpfYTkFNv8H83w0MFatTJYLNj

Malware Config

Signatures

  • Downloads MZ/PE file
  • Deletes itself 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 6 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Accesses 2FA software files, possible credential harvesting 2 TTPs
  • 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). Likely ransomware behaviour.

  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Delays execution with timeout.exe 1 IoCs
  • Modifies system certificate store 2 TTPs 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\file.exe
    "C:\Users\Admin\AppData\Local\Temp\file.exe"
    1⤵
    • Loads dropped DLL
    • Checks processor information in registry
    • Modifies system certificate store
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1404
    • C:\ProgramData\89935715126209907266.exe
      "C:\ProgramData\89935715126209907266.exe"
      2⤵
      • Executes dropped EXE
      PID:1780
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\Temp\file.exe" & exit
      2⤵
      • Deletes itself
      • Suspicious use of WriteProcessMemory
      PID:668
      • C:\Windows\SysWOW64\timeout.exe
        timeout /t 6
        3⤵
        • Delays execution with timeout.exe
        PID:808

Network

MITRE ATT&CK Matrix ATT&CK v6

Defense Evasion

Install Root Certificate

1
T1130

Modify Registry

1
T1112

Credential Access

Credentials in Files

3
T1081

Discovery

Query Registry

2
T1012

System Information Discovery

2
T1082

Collection

Data from Local System

3
T1005

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\ProgramData\89935715126209907266.exe
    Filesize

    6.6MB

    MD5

    900d27e6128c54af6b69cf16612ef16b

    SHA1

    e21cfcd4e5767612b050ae2fed4868480af4ea1a

    SHA256

    01e388da881c2c5b5689b1c9919ee092ffd24b269e5760159c75b5478d1e4b58

    SHA512

    d4e7feedbe5294093ca4bab47c1285e3bfec493e4fd93289b355e2e056b486fe3addaa132cb03d9db86367a24d8b9129a172d1588c3bbe6abed4cbbbf67ddc5f

  • \ProgramData\89935715126209907266.exe
    Filesize

    6.6MB

    MD5

    900d27e6128c54af6b69cf16612ef16b

    SHA1

    e21cfcd4e5767612b050ae2fed4868480af4ea1a

    SHA256

    01e388da881c2c5b5689b1c9919ee092ffd24b269e5760159c75b5478d1e4b58

    SHA512

    d4e7feedbe5294093ca4bab47c1285e3bfec493e4fd93289b355e2e056b486fe3addaa132cb03d9db86367a24d8b9129a172d1588c3bbe6abed4cbbbf67ddc5f

  • \ProgramData\89935715126209907266.exe
    Filesize

    6.6MB

    MD5

    900d27e6128c54af6b69cf16612ef16b

    SHA1

    e21cfcd4e5767612b050ae2fed4868480af4ea1a

    SHA256

    01e388da881c2c5b5689b1c9919ee092ffd24b269e5760159c75b5478d1e4b58

    SHA512

    d4e7feedbe5294093ca4bab47c1285e3bfec493e4fd93289b355e2e056b486fe3addaa132cb03d9db86367a24d8b9129a172d1588c3bbe6abed4cbbbf67ddc5f

  • \ProgramData\89935715126209907266.exe
    Filesize

    6.6MB

    MD5

    900d27e6128c54af6b69cf16612ef16b

    SHA1

    e21cfcd4e5767612b050ae2fed4868480af4ea1a

    SHA256

    01e388da881c2c5b5689b1c9919ee092ffd24b269e5760159c75b5478d1e4b58

    SHA512

    d4e7feedbe5294093ca4bab47c1285e3bfec493e4fd93289b355e2e056b486fe3addaa132cb03d9db86367a24d8b9129a172d1588c3bbe6abed4cbbbf67ddc5f

  • \ProgramData\89935715126209907266.exe
    Filesize

    6.6MB

    MD5

    900d27e6128c54af6b69cf16612ef16b

    SHA1

    e21cfcd4e5767612b050ae2fed4868480af4ea1a

    SHA256

    01e388da881c2c5b5689b1c9919ee092ffd24b269e5760159c75b5478d1e4b58

    SHA512

    d4e7feedbe5294093ca4bab47c1285e3bfec493e4fd93289b355e2e056b486fe3addaa132cb03d9db86367a24d8b9129a172d1588c3bbe6abed4cbbbf67ddc5f

  • \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/668-81-0x0000000000000000-mapping.dmp
  • memory/808-82-0x0000000000000000-mapping.dmp
  • memory/1404-54-0x0000000075A11000-0x0000000075A13000-memory.dmp
    Filesize

    8KB

  • memory/1404-55-0x0000000051220000-0x0000000051313000-memory.dmp
    Filesize

    972KB

  • memory/1780-79-0x0000000000000000-mapping.dmp