Analysis

  • max time kernel
    120s
  • max time network
    121s
  • platform
    windows7_x64
  • resource
    win7-20240220-en
  • resource tags

    arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
  • submitted
    29-02-2024 04:57

General

  • Target

    8a60003d53bc5e6816e4bef82a922979372bc2b6e6f6b69588d523469438800b.exe

  • Size

    198KB

  • MD5

    9e90e4a056d35bf2d1750476444f38b3

  • SHA1

    1dd67043f818f67162d3873040fa0445dab3c43f

  • SHA256

    8a60003d53bc5e6816e4bef82a922979372bc2b6e6f6b69588d523469438800b

  • SHA512

    9dd177516ef2193f3d5a650efdb6bd1e39dcb300ffab7d2154f1941602f4bf622ecdf25b8ac14a9e8aa822fda19bf50bcfbd601d3a3961490c4267c3a0950956

  • SSDEEP

    3072:m4ffgaRSiLJfAVG8j6M6/ifJ8y42SK0NxIOPhUW2ugh12s3w:xPbdAwa6MmKJ83K0E+UHPj3w

Malware Config

Signatures

  • Buer

    Buer is a new modular loader first seen in August 2019.

  • Downloads MZ/PE file
  • Loads dropped DLL 2 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.

  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\8a60003d53bc5e6816e4bef82a922979372bc2b6e6f6b69588d523469438800b.exe
    "C:\Users\Admin\AppData\Local\Temp\8a60003d53bc5e6816e4bef82a922979372bc2b6e6f6b69588d523469438800b.exe"
    1⤵
    • Loads dropped DLL
    • Checks processor information in registry
    • Suspicious behavior: EnumeratesProcesses
    PID:2348

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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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

  • memory/2348-1-0x00000000023F0000-0x00000000024F0000-memory.dmp

    Filesize

    1024KB

  • memory/2348-2-0x0000000000220000-0x0000000000247000-memory.dmp

    Filesize

    156KB

  • memory/2348-3-0x0000000000400000-0x00000000022DA000-memory.dmp

    Filesize

    30.9MB

  • memory/2348-4-0x0000000061E00000-0x0000000061EF3000-memory.dmp

    Filesize

    972KB

  • memory/2348-60-0x0000000000400000-0x00000000022DA000-memory.dmp

    Filesize

    30.9MB

  • memory/2348-68-0x0000000000400000-0x00000000022DA000-memory.dmp

    Filesize

    30.9MB

  • memory/2348-70-0x0000000000400000-0x00000000022DA000-memory.dmp

    Filesize

    30.9MB

  • memory/2348-71-0x00000000023F0000-0x00000000024F0000-memory.dmp

    Filesize

    1024KB