Analysis

  • max time kernel
    143s
  • max time network
    125s
  • platform
    windows7_x64
  • resource
    win7-20230220-en
  • resource tags

    arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
  • submitted
    30-03-2023 14:05

General

  • Target

    build2.exe

  • Size

    416KB

  • MD5

    aa18968e6cfbdc382ada6a3ed2852085

  • SHA1

    4a41fa1a182916d5790aa2071106b3441d64468d

  • SHA256

    c165c8db38ef8dd8c33d103b5ee78e9ddafd8081ff0c7c035fa5251f970e6cfb

  • SHA512

    8ffdacca2b003438fd4874e7c88beedb6ad8cf9cd5b36fda5907751e06a85a829e7d9ce7335fb59590462f78054722bccba511b21db838368c661d993000a845

  • SSDEEP

    6144:2tSK7xCXvZt/cuPXL/G1a5i7VHUOepEXqZCbt+sEtDDTS:2tSKtavZLPrCa5YHUjpdQbIzS

Malware Config

Extracted

Family

vidar

Version

3.2

Botnet

5df88deb5dde677ba658b77ad5f60248

C2

https://steamcommunity.com/profiles/76561199489580435

https://t.me/tabootalks

Attributes
  • profile_id_v2

    5df88deb5dde677ba658b77ad5f60248

  • user_agent

    Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/105.0.0.0 Safari/537.36 OPR/91.0.4516.79

Signatures

  • Vidar

    Vidar is an infostealer based on Arkei stealer.

  • Loads dropped DLL 2 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Suspicious use of SetThreadContext 1 IoCs
  • Modifies system certificate store 2 TTPs 3 IoCs
  • Suspicious use of WriteProcessMemory 10 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\build2.exe
    "C:\Users\Admin\AppData\Local\Temp\build2.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1048
    • C:\Users\Admin\AppData\Local\Temp\build2.exe
      "C:\Users\Admin\AppData\Local\Temp\build2.exe"
      2⤵
      • Loads dropped DLL
      • Modifies system certificate store
      PID:2008

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015
    Filesize

    61KB

    MD5

    e71c8443ae0bc2e282c73faead0a6dd3

    SHA1

    0c110c1b01e68edfacaeae64781a37b1995fa94b

    SHA256

    95b0a5acc5bf70d3abdfd091d0c9f9063aa4fde65bd34dbf16786082e1992e72

    SHA512

    b38458c7fa2825afb72794f374827403d5946b1132e136a0ce075dfd351277cf7d957c88dc8a1e4adc3bcae1fa8010dae3831e268e910d517691de24326391a6

  • C:\Users\Admin\AppData\Local\Temp\Tar64D3.tmp
    Filesize

    161KB

    MD5

    be2bec6e8c5653136d3e72fe53c98aa3

    SHA1

    a8182d6db17c14671c3d5766c72e58d87c0810de

    SHA256

    1919aab2a820642490169bdc4e88bd1189e22f83e7498bf8ebdfb62ec7d843fd

    SHA512

    0d1424ccdf0d53faf3f4e13d534e12f22388648aa4c23edbc503801e3c96b7f73c7999b760b5bef4b5e9dd923dffe21a21889b1ce836dd428420bf0f4f5327ff

  • \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/1048-58-0x00000000002E0000-0x0000000000337000-memory.dmp
    Filesize

    348KB

  • memory/2008-60-0x0000000000400000-0x000000000046C000-memory.dmp
    Filesize

    432KB

  • memory/2008-67-0x0000000000400000-0x000000000046C000-memory.dmp
    Filesize

    432KB

  • memory/2008-68-0x0000000000400000-0x000000000046C000-memory.dmp
    Filesize

    432KB

  • memory/2008-63-0x0000000000400000-0x000000000046C000-memory.dmp
    Filesize

    432KB

  • memory/2008-55-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
    Filesize

    4KB

  • memory/2008-120-0x0000000000400000-0x000000000046C000-memory.dmp
    Filesize

    432KB

  • memory/2008-121-0x0000000000400000-0x000000000046C000-memory.dmp
    Filesize

    432KB

  • memory/2008-122-0x0000000061E00000-0x0000000061EF3000-memory.dmp
    Filesize

    972KB

  • memory/2008-59-0x0000000000400000-0x000000000046C000-memory.dmp
    Filesize

    432KB

  • memory/2008-56-0x0000000000400000-0x000000000046C000-memory.dmp
    Filesize

    432KB

  • memory/2008-151-0x0000000000400000-0x000000000046C000-memory.dmp
    Filesize

    432KB

  • memory/2008-164-0x0000000000400000-0x000000000046C000-memory.dmp
    Filesize

    432KB