Analysis

  • max time kernel
    118s
  • max time network
    122s
  • platform
    windows7_x64
  • resource
    win7-20240508-en
  • resource tags

    arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
  • submitted
    01-07-2024 01:05

General

  • Target

    416b40630daa924136b9d10e0faa8c800a7a882416f4e5b7944f9bc2553a414b.exe

  • Size

    4.4MB

  • MD5

    c5f20b0cb835adff91c281ba3e9995e3

  • SHA1

    b7edfc4fb9befe9acf241e423741e27d68dfd832

  • SHA256

    416b40630daa924136b9d10e0faa8c800a7a882416f4e5b7944f9bc2553a414b

  • SHA512

    233587e39de30cfa0a9526fb041f9c9c70a1e7574e8bd8d934f7b795f3eff2a8aa8e98f20a7fcb06f00c85c233461d56bbabb4bba39c1ac4869839e3f0022678

  • SSDEEP

    49152:e+PcYB/o36ki63Hw4/uzcdl3ne2xAOVmmgZV099snm9pswB0Nq7:tPcYB/y6ki6PnuwT06sajB0Nq7

Malware Config

Extracted

Family

vidar

C2

https://t.me/g067n

https://steamcommunity.com/profiles/76561199707802586

Attributes
  • user_agent

    Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:129.0) Gecko/20100101 Firefox/129.0

Signatures

  • Detect Vidar Stealer 2 IoCs
  • Stealc

    Stealc is an infostealer written in C++.

  • Vidar

    Vidar is an infostealer based on Arkei stealer.

  • Detect binaries embedding considerable number of MFA browser extension IDs. 1 IoCs
  • Detect binaries embedding considerable number of cryptocurrency wallet browser extension IDs. 1 IoCs
  • Detects Windows executables referencing non-Windows User-Agents 2 IoCs
  • Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers. 1 IoCs
  • Downloads MZ/PE file
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 7 IoCs
  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • Suspicious use of SetThreadContext 1 IoCs
  • Program crash 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 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 26 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\416b40630daa924136b9d10e0faa8c800a7a882416f4e5b7944f9bc2553a414b.exe
    "C:\Users\Admin\AppData\Local\Temp\416b40630daa924136b9d10e0faa8c800a7a882416f4e5b7944f9bc2553a414b.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3056
    • 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:2692
      • C:\ProgramData\JKFIDGDHJE.exe
        "C:\ProgramData\JKFIDGDHJE.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of WriteProcessMemory
        PID:1108
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 1108 -s 96
          4⤵
          • Loads dropped DLL
          • Program crash
          PID:776
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\system32\cmd.exe" /c timeout /t 10 & rd /s /q "C:\ProgramData\IJKFCFHJDBKK" & exit
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:696
        • C:\Windows\SysWOW64\timeout.exe
          timeout /t 10
          4⤵
          • Delays execution with timeout.exe
          PID:2400

Network

MITRE ATT&CK Matrix ATT&CK v13

Credential Access

Unsecured Credentials

1
T1552

Credentials In Files

1
T1552.001

Discovery

Query Registry

1
T1012

System Information Discovery

1
T1082

Collection

Data from Local System

1
T1005

Replay Monitor

Loading Replay Monitor...

Downloads

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

    70KB

    MD5

    49aebf8cbd62d92ac215b2923fb1b9f5

    SHA1

    1723be06719828dda65ad804298d0431f6aff976

    SHA256

    b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

    SHA512

    bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

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

    342B

    MD5

    894019a61411b85da7a71a19cb611cd3

    SHA1

    0ddf0c22274e03d686a8e9da604bc37d7af553ce

    SHA256

    263dc72897c9e23d260a93ab4d87b12d3d3395d9cbc359b06e733755916da45b

    SHA512

    29f4a0f3c3aadf4c18c5ac893e50e421a305cf7f4e4e8e1b53e8981721d6f3e64b37cac1765f8e69aa00e4128ac3afb8fe9a3c6a30e660d7562056ba2c46e7ea

  • C:\Users\Admin\AppData\Local\Temp\Tar3634.tmp
    Filesize

    181KB

    MD5

    4ea6026cf93ec6338144661bf1202cd1

    SHA1

    a1dec9044f750ad887935a01430bf49322fbdcb7

    SHA256

    8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

    SHA512

    6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

  • \ProgramData\JKFIDGDHJE.exe
    Filesize

    516KB

    MD5

    0309dd0131150796ea99b30a62194fae

    SHA1

    2df6e334708eae810a74b844fd57e18e9fdc34cd

    SHA256

    07c09ba5a84f619e5b83a54298ffc58d20b00f14399c7a94b7f02b70efc60f35

    SHA512

    3d4e5a0718d04fee92d8040880b631107d1e23a6b3bce430d58769179af999c28b99e50c5cd45f283339f7bbb24ffacbf601a5447edb12e28da4517fbfa282e8

  • memory/2692-69-0x0000000000400000-0x0000000000648000-memory.dmp
    Filesize

    2.3MB

  • memory/2692-597-0x0000000000400000-0x0000000000648000-memory.dmp
    Filesize

    2.3MB

  • memory/2692-67-0x0000000000400000-0x0000000000648000-memory.dmp
    Filesize

    2.3MB

  • memory/2692-80-0x0000000000400000-0x0000000000648000-memory.dmp
    Filesize

    2.3MB

  • memory/3056-49-0x0000000000680000-0x0000000000695000-memory.dmp
    Filesize

    84KB

  • memory/3056-37-0x0000000000680000-0x0000000000695000-memory.dmp
    Filesize

    84KB

  • memory/3056-63-0x0000000000680000-0x0000000000695000-memory.dmp
    Filesize

    84KB

  • memory/3056-61-0x0000000000680000-0x0000000000695000-memory.dmp
    Filesize

    84KB

  • memory/3056-66-0x0000000074410000-0x0000000074AFE000-memory.dmp
    Filesize

    6.9MB

  • memory/3056-59-0x0000000000680000-0x0000000000695000-memory.dmp
    Filesize

    84KB

  • memory/3056-45-0x0000000000680000-0x0000000000695000-memory.dmp
    Filesize

    84KB

  • memory/3056-6-0x0000000000680000-0x0000000000695000-memory.dmp
    Filesize

    84KB

  • memory/3056-81-0x0000000074410000-0x0000000074AFE000-memory.dmp
    Filesize

    6.9MB

  • memory/3056-7-0x0000000000680000-0x0000000000695000-memory.dmp
    Filesize

    84KB

  • memory/3056-57-0x0000000000680000-0x0000000000695000-memory.dmp
    Filesize

    84KB

  • memory/3056-55-0x0000000000680000-0x0000000000695000-memory.dmp
    Filesize

    84KB

  • memory/3056-53-0x0000000000680000-0x0000000000695000-memory.dmp
    Filesize

    84KB

  • memory/3056-51-0x0000000000680000-0x0000000000695000-memory.dmp
    Filesize

    84KB

  • memory/3056-0-0x000000007441E000-0x000000007441F000-memory.dmp
    Filesize

    4KB

  • memory/3056-47-0x0000000000680000-0x0000000000695000-memory.dmp
    Filesize

    84KB

  • memory/3056-43-0x0000000000680000-0x0000000000695000-memory.dmp
    Filesize

    84KB

  • memory/3056-42-0x0000000000680000-0x0000000000695000-memory.dmp
    Filesize

    84KB

  • memory/3056-39-0x0000000000680000-0x0000000000695000-memory.dmp
    Filesize

    84KB

  • memory/3056-65-0x0000000000680000-0x0000000000695000-memory.dmp
    Filesize

    84KB

  • memory/3056-35-0x0000000000680000-0x0000000000695000-memory.dmp
    Filesize

    84KB

  • memory/3056-33-0x0000000000680000-0x0000000000695000-memory.dmp
    Filesize

    84KB

  • memory/3056-31-0x0000000000680000-0x0000000000695000-memory.dmp
    Filesize

    84KB

  • memory/3056-29-0x0000000000680000-0x0000000000695000-memory.dmp
    Filesize

    84KB

  • memory/3056-27-0x0000000000680000-0x0000000000695000-memory.dmp
    Filesize

    84KB

  • memory/3056-25-0x0000000000680000-0x0000000000695000-memory.dmp
    Filesize

    84KB

  • memory/3056-23-0x0000000000680000-0x0000000000695000-memory.dmp
    Filesize

    84KB

  • memory/3056-21-0x0000000000680000-0x0000000000695000-memory.dmp
    Filesize

    84KB

  • memory/3056-19-0x0000000000680000-0x0000000000695000-memory.dmp
    Filesize

    84KB

  • memory/3056-17-0x0000000000680000-0x0000000000695000-memory.dmp
    Filesize

    84KB

  • memory/3056-15-0x0000000000680000-0x0000000000695000-memory.dmp
    Filesize

    84KB

  • memory/3056-13-0x0000000000680000-0x0000000000695000-memory.dmp
    Filesize

    84KB

  • memory/3056-11-0x0000000000680000-0x0000000000695000-memory.dmp
    Filesize

    84KB

  • memory/3056-9-0x0000000000680000-0x0000000000695000-memory.dmp
    Filesize

    84KB

  • memory/3056-4-0x0000000004860000-0x000000000496C000-memory.dmp
    Filesize

    1.0MB

  • memory/3056-5-0x0000000000680000-0x000000000069C000-memory.dmp
    Filesize

    112KB

  • memory/3056-3-0x0000000074410000-0x0000000074AFE000-memory.dmp
    Filesize

    6.9MB

  • memory/3056-2-0x00000000005B0000-0x00000000005BA000-memory.dmp
    Filesize

    40KB

  • memory/3056-1-0x00000000008A0000-0x0000000000D02000-memory.dmp
    Filesize

    4.4MB