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Analysis

  • max time kernel
    129s
  • max time network
    298s
  • platform
    windows10-1703_x64
  • resource
    win10-20240611-en
  • resource tags

    arch:x64arch:x86image:win10-20240611-enlocale:en-usos:windows10-1703-x64system
  • submitted
    11/07/2024, 22:33

General

  • Target

    4bdfd59b483a10eb95136609e25962884d8c6c4c97249fde304dc19b504768c9.exe

  • Size

    5.5MB

  • MD5

    983dff02742f5837caf4346840a2781e

  • SHA1

    068034b6154abcb93cf7cc63b43a1b68b74cbcc6

  • SHA256

    4bdfd59b483a10eb95136609e25962884d8c6c4c97249fde304dc19b504768c9

  • SHA512

    a7b5eb217a829aaeb902467d046d5dff1886bccb7b29c7081a5c512411dedfed2ac041d4ecbc7a29944be3eb643377aecd42cf15a7b32d759ab598a91059802d

  • SSDEEP

    98304:nY/z5D4MPXHgcQI0pjKY6po40sv+nWwy3ir4:Ozp4MPUpwpo4Eny30

Malware Config

Extracted

Family

vidar

C2

https://steamcommunity.com/profiles/76561199735694209

https://t.me/puffclou

Attributes
  • user_agent

    Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:128.1) Gecko/20100101 Firefox/128.1

Signatures

  • Detect Vidar Stealer 5 IoCs
  • Stealc

    Stealc is an infostealer written in C++.

  • Vidar

    Vidar is an infostealer based on Arkei stealer.

  • Downloads MZ/PE file
  • 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.

  • Delays execution with timeout.exe 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 10 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\4bdfd59b483a10eb95136609e25962884d8c6c4c97249fde304dc19b504768c9.exe
    "C:\Users\Admin\AppData\Local\Temp\4bdfd59b483a10eb95136609e25962884d8c6c4c97249fde304dc19b504768c9.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4296
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
      2⤵
      • Loads dropped DLL
      • Checks processor information in registry
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2224
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\system32\cmd.exe" /c timeout /t 10 & rd /s /q "C:\ProgramData\EBAKEBAECGCB" & exit
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:4556
        • C:\Windows\SysWOW64\timeout.exe
          timeout /t 10
          4⤵
          • Delays execution with timeout.exe
          PID:4896

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/2224-67-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/2224-136-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/2224-81-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/2224-72-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/2224-69-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/4296-44-0x0000000005280000-0x0000000005295000-memory.dmp

    Filesize

    84KB

  • memory/4296-40-0x0000000005280000-0x0000000005295000-memory.dmp

    Filesize

    84KB

  • memory/4296-66-0x0000000005280000-0x0000000005295000-memory.dmp

    Filesize

    84KB

  • memory/4296-65-0x0000000005280000-0x0000000005295000-memory.dmp

    Filesize

    84KB

  • memory/4296-26-0x0000000005280000-0x0000000005295000-memory.dmp

    Filesize

    84KB

  • memory/4296-6-0x0000000005280000-0x000000000529C000-memory.dmp

    Filesize

    112KB

  • memory/4296-62-0x0000000005280000-0x0000000005295000-memory.dmp

    Filesize

    84KB

  • memory/4296-60-0x0000000005280000-0x0000000005295000-memory.dmp

    Filesize

    84KB

  • memory/4296-58-0x0000000005280000-0x0000000005295000-memory.dmp

    Filesize

    84KB

  • memory/4296-56-0x0000000005280000-0x0000000005295000-memory.dmp

    Filesize

    84KB

  • memory/4296-54-0x0000000005280000-0x0000000005295000-memory.dmp

    Filesize

    84KB

  • memory/4296-52-0x0000000005280000-0x0000000005295000-memory.dmp

    Filesize

    84KB

  • memory/4296-50-0x0000000005280000-0x0000000005295000-memory.dmp

    Filesize

    84KB

  • memory/4296-48-0x0000000005280000-0x0000000005295000-memory.dmp

    Filesize

    84KB

  • memory/4296-46-0x0000000005280000-0x0000000005295000-memory.dmp

    Filesize

    84KB

  • memory/4296-0-0x000000007325E000-0x000000007325F000-memory.dmp

    Filesize

    4KB

  • memory/4296-71-0x0000000073250000-0x000000007393E000-memory.dmp

    Filesize

    6.9MB

  • memory/4296-42-0x0000000005280000-0x0000000005295000-memory.dmp

    Filesize

    84KB

  • memory/4296-5-0x00000000056D0000-0x0000000005822000-memory.dmp

    Filesize

    1.3MB

  • memory/4296-36-0x0000000005280000-0x0000000005295000-memory.dmp

    Filesize

    84KB

  • memory/4296-34-0x0000000005280000-0x0000000005295000-memory.dmp

    Filesize

    84KB

  • memory/4296-32-0x0000000005280000-0x0000000005295000-memory.dmp

    Filesize

    84KB

  • memory/4296-30-0x0000000005280000-0x0000000005295000-memory.dmp

    Filesize

    84KB

  • memory/4296-28-0x0000000005280000-0x0000000005295000-memory.dmp

    Filesize

    84KB

  • memory/4296-22-0x0000000005280000-0x0000000005295000-memory.dmp

    Filesize

    84KB

  • memory/4296-20-0x0000000005280000-0x0000000005295000-memory.dmp

    Filesize

    84KB

  • memory/4296-16-0x0000000005280000-0x0000000005295000-memory.dmp

    Filesize

    84KB

  • memory/4296-14-0x0000000005280000-0x0000000005295000-memory.dmp

    Filesize

    84KB

  • memory/4296-12-0x0000000005280000-0x0000000005295000-memory.dmp

    Filesize

    84KB

  • memory/4296-10-0x0000000005280000-0x0000000005295000-memory.dmp

    Filesize

    84KB

  • memory/4296-8-0x0000000005280000-0x0000000005295000-memory.dmp

    Filesize

    84KB

  • memory/4296-38-0x0000000005280000-0x0000000005295000-memory.dmp

    Filesize

    84KB

  • memory/4296-25-0x0000000005280000-0x0000000005295000-memory.dmp

    Filesize

    84KB

  • memory/4296-18-0x0000000005280000-0x0000000005295000-memory.dmp

    Filesize

    84KB

  • memory/4296-7-0x0000000005280000-0x0000000005295000-memory.dmp

    Filesize

    84KB

  • memory/4296-4-0x00000000054C0000-0x00000000056C8000-memory.dmp

    Filesize

    2.0MB

  • memory/4296-3-0x0000000073250000-0x000000007393E000-memory.dmp

    Filesize

    6.9MB

  • memory/4296-2-0x0000000005300000-0x000000000539C000-memory.dmp

    Filesize

    624KB

  • memory/4296-1-0x00000000004C0000-0x0000000000A4A000-memory.dmp

    Filesize

    5.5MB