Analysis

  • max time kernel
    118s
  • max time network
    122s
  • platform
    windows7_x64
  • resource
    win7-20240419-en
  • resource tags

    arch:x64arch:x86image:win7-20240419-enlocale:en-usos:windows7-x64system
  • submitted
    04-07-2024 22:34

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.

  • Downloads MZ/PE file
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 6 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:2248
    • 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:2896
      • C:\ProgramData\EHCBAAAFHJ.exe
        "C:\ProgramData\EHCBAAAFHJ.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of WriteProcessMemory
        PID:1936
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 1936 -s 96
          4⤵
          • Loads dropped DLL
          • Program crash
          PID:2752
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\system32\cmd.exe" /c timeout /t 10 & rd /s /q "C:\ProgramData\DHJJEGHIIDAF" & exit
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1268
        • C:\Windows\SysWOW64\timeout.exe
          timeout /t 10
          4⤵
          • Delays execution with timeout.exe
          PID:2336

Network

MITRE ATT&CK Enterprise v15

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

    97964706b30f0495636ad8574092d00c

    SHA1

    071bf215bed5fe5e767c630f97f346d772b3d339

    SHA256

    f3150884a123a894396de9032a616bd190031682ae068c22746c76558434d458

    SHA512

    2e326a41f740053d541f5f4dc5faf8b622b77e9609bc87f126e7a0f14287f6b6bef10a93baea9bbb0f24165da5db36086a77b189c9c0550ec41212e050f38e0e

  • C:\Users\Admin\AppData\Local\Temp\Tar1D96.tmp

    Filesize

    181KB

    MD5

    4ea6026cf93ec6338144661bf1202cd1

    SHA1

    a1dec9044f750ad887935a01430bf49322fbdcb7

    SHA256

    8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

    SHA512

    6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

  • \ProgramData\EHCBAAAFHJ.exe

    Filesize

    937KB

    MD5

    168c5908924803d268d26965c32a5620

    SHA1

    9e0e2dc9c7e931c4ee860c32d83711c433f7b1a3

    SHA256

    2fd72d0d0fbc053a53adee5d9ec6cffde3fb5a3c6ba0c0490e24552b264d5449

    SHA512

    749f0e4da8d6fde35b53e769b0b594c2e63835f970eedc54c8c15889863811b5fb296650ae9f5e255bafdd4b942ad3434a60c48e05f1283820c378d30645f1c1

  • memory/2248-82-0x0000000074940000-0x000000007502E000-memory.dmp

    Filesize

    6.9MB

  • memory/2248-9-0x00000000009B0000-0x00000000009C5000-memory.dmp

    Filesize

    84KB

  • memory/2248-6-0x00000000009B0000-0x00000000009C5000-memory.dmp

    Filesize

    84KB

  • memory/2248-49-0x00000000009B0000-0x00000000009C5000-memory.dmp

    Filesize

    84KB

  • memory/2248-7-0x00000000009B0000-0x00000000009C5000-memory.dmp

    Filesize

    84KB

  • memory/2248-11-0x00000000009B0000-0x00000000009C5000-memory.dmp

    Filesize

    84KB

  • memory/2248-13-0x00000000009B0000-0x00000000009C5000-memory.dmp

    Filesize

    84KB

  • memory/2248-41-0x00000000009B0000-0x00000000009C5000-memory.dmp

    Filesize

    84KB

  • memory/2248-65-0x00000000009B0000-0x00000000009C5000-memory.dmp

    Filesize

    84KB

  • memory/2248-63-0x00000000009B0000-0x00000000009C5000-memory.dmp

    Filesize

    84KB

  • memory/2248-61-0x00000000009B0000-0x00000000009C5000-memory.dmp

    Filesize

    84KB

  • memory/2248-59-0x00000000009B0000-0x00000000009C5000-memory.dmp

    Filesize

    84KB

  • memory/2248-57-0x00000000009B0000-0x00000000009C5000-memory.dmp

    Filesize

    84KB

  • memory/2248-66-0x0000000074940000-0x000000007502E000-memory.dmp

    Filesize

    6.9MB

  • memory/2248-51-0x00000000009B0000-0x00000000009C5000-memory.dmp

    Filesize

    84KB

  • memory/2248-47-0x00000000009B0000-0x00000000009C5000-memory.dmp

    Filesize

    84KB

  • memory/2248-2-0x00000000007C0000-0x00000000007CA000-memory.dmp

    Filesize

    40KB

  • memory/2248-55-0x00000000009B0000-0x00000000009C5000-memory.dmp

    Filesize

    84KB

  • memory/2248-0-0x000000007494E000-0x000000007494F000-memory.dmp

    Filesize

    4KB

  • memory/2248-53-0x00000000009B0000-0x00000000009C5000-memory.dmp

    Filesize

    84KB

  • memory/2248-1-0x0000000000110000-0x0000000000572000-memory.dmp

    Filesize

    4.4MB

  • memory/2248-5-0x00000000009B0000-0x00000000009CC000-memory.dmp

    Filesize

    112KB

  • memory/2248-3-0x0000000074940000-0x000000007502E000-memory.dmp

    Filesize

    6.9MB

  • memory/2248-45-0x00000000009B0000-0x00000000009C5000-memory.dmp

    Filesize

    84KB

  • memory/2248-43-0x00000000009B0000-0x00000000009C5000-memory.dmp

    Filesize

    84KB

  • memory/2248-39-0x00000000009B0000-0x00000000009C5000-memory.dmp

    Filesize

    84KB

  • memory/2248-37-0x00000000009B0000-0x00000000009C5000-memory.dmp

    Filesize

    84KB

  • memory/2248-35-0x00000000009B0000-0x00000000009C5000-memory.dmp

    Filesize

    84KB

  • memory/2248-33-0x00000000009B0000-0x00000000009C5000-memory.dmp

    Filesize

    84KB

  • memory/2248-31-0x00000000009B0000-0x00000000009C5000-memory.dmp

    Filesize

    84KB

  • memory/2248-29-0x00000000009B0000-0x00000000009C5000-memory.dmp

    Filesize

    84KB

  • memory/2248-27-0x00000000009B0000-0x00000000009C5000-memory.dmp

    Filesize

    84KB

  • memory/2248-25-0x00000000009B0000-0x00000000009C5000-memory.dmp

    Filesize

    84KB

  • memory/2248-23-0x00000000009B0000-0x00000000009C5000-memory.dmp

    Filesize

    84KB

  • memory/2248-21-0x00000000009B0000-0x00000000009C5000-memory.dmp

    Filesize

    84KB

  • memory/2248-19-0x00000000009B0000-0x00000000009C5000-memory.dmp

    Filesize

    84KB

  • memory/2248-17-0x00000000009B0000-0x00000000009C5000-memory.dmp

    Filesize

    84KB

  • memory/2248-15-0x00000000009B0000-0x00000000009C5000-memory.dmp

    Filesize

    84KB

  • memory/2248-4-0x0000000004B80000-0x0000000004C8C000-memory.dmp

    Filesize

    1.0MB

  • memory/2896-67-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/2896-81-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/2896-69-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/2896-597-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB