Analysis

  • max time kernel
    118s
  • max time network
    119s
  • platform
    windows7_x64
  • resource
    win7-20240704-en
  • resource tags

    arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
  • submitted
    04-07-2024 22:47

General

  • Target

    ddeeff4e5314374020eec0588d404cbd6ffd20ebf828bc81e9b0816def71232f.exe

  • Size

    5.9MB

  • MD5

    048aee0544f6faf502419b571a053980

  • SHA1

    047c0fb760c3af3b0a1e741bd808858090dd70bf

  • SHA256

    ddeeff4e5314374020eec0588d404cbd6ffd20ebf828bc81e9b0816def71232f

  • SHA512

    4fa292dade05bfc568ba6a39f129bdf88e59486faadebd64f2488fac79893c49b95c1bd7a606afae5e2add7cfece62554aa6d0e5ebd9f4eb75ba20dd462e8940

  • SSDEEP

    98304:jYBYLosS6pvT7gIit3r648uaK9hobG/c70C0LRaFS:cBYLNS6pvT76t3r6bJK9hobZEVp

Malware Config

Extracted

Family

vidar

C2

https://t.me/bu77un

https://steamcommunity.com/profiles/76561199730044335

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 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\ddeeff4e5314374020eec0588d404cbd6ffd20ebf828bc81e9b0816def71232f.exe
    "C:\Users\Admin\AppData\Local\Temp\ddeeff4e5314374020eec0588d404cbd6ffd20ebf828bc81e9b0816def71232f.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1480
    • 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:2652
      • C:\ProgramData\FHIDAKFIJJ.exe
        "C:\ProgramData\FHIDAKFIJJ.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of WriteProcessMemory
        PID:2104
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 2104 -s 96
          4⤵
          • Loads dropped DLL
          • Program crash
          PID:892
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\system32\cmd.exe" /c timeout /t 10 & rd /s /q "C:\ProgramData\BKFCBFCBFBKE" & exit
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1756
        • C:\Windows\SysWOW64\timeout.exe
          timeout /t 10
          4⤵
          • Delays execution with timeout.exe
          PID:1720

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\ProgramData\FHIDAKFIJJ.exe

    Filesize

    937KB

    MD5

    168c5908924803d268d26965c32a5620

    SHA1

    9e0e2dc9c7e931c4ee860c32d83711c433f7b1a3

    SHA256

    2fd72d0d0fbc053a53adee5d9ec6cffde3fb5a3c6ba0c0490e24552b264d5449

    SHA512

    749f0e4da8d6fde35b53e769b0b594c2e63835f970eedc54c8c15889863811b5fb296650ae9f5e255bafdd4b942ad3434a60c48e05f1283820c378d30645f1c1

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

    Filesize

    342B

    MD5

    2963ce277266605bec3ee1fb6dfe8a66

    SHA1

    4d0fb38d3c0273490a35cdbc8b15a8fdd02864bf

    SHA256

    ea579ab1018e83025727c9ab92c86688b96342da3d1745a77bbc1b9d9d3ef468

    SHA512

    227a353eb5cb461f35b3afbb627685e64a73a2d9dde3289a6a2d2e5c3836d64cae89348d00bd1b6601538b98c3afe16c41dea72b64e6542217e9aae2635006ac

  • C:\Users\Admin\AppData\Local\Temp\Cab89F9.tmp

    Filesize

    70KB

    MD5

    49aebf8cbd62d92ac215b2923fb1b9f5

    SHA1

    1723be06719828dda65ad804298d0431f6aff976

    SHA256

    b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

    SHA512

    bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

  • C:\Users\Admin\AppData\Local\Temp\Tar8A0C.tmp

    Filesize

    181KB

    MD5

    4ea6026cf93ec6338144661bf1202cd1

    SHA1

    a1dec9044f750ad887935a01430bf49322fbdcb7

    SHA256

    8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

    SHA512

    6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

  • memory/1480-36-0x00000000008F0000-0x0000000000905000-memory.dmp

    Filesize

    84KB

  • memory/1480-56-0x00000000008F0000-0x0000000000905000-memory.dmp

    Filesize

    84KB

  • memory/1480-28-0x00000000008F0000-0x0000000000905000-memory.dmp

    Filesize

    84KB

  • memory/1480-58-0x00000000008F0000-0x0000000000905000-memory.dmp

    Filesize

    84KB

  • memory/1480-1-0x0000000000AF0000-0x00000000010CC000-memory.dmp

    Filesize

    5.9MB

  • memory/1480-2-0x00000000745D0000-0x0000000074CBE000-memory.dmp

    Filesize

    6.9MB

  • memory/1480-3-0x0000000005540000-0x000000000569E000-memory.dmp

    Filesize

    1.4MB

  • memory/1480-30-0x00000000008F0000-0x0000000000905000-memory.dmp

    Filesize

    84KB

  • memory/1480-80-0x00000000745D0000-0x0000000074CBE000-memory.dmp

    Filesize

    6.9MB

  • memory/1480-55-0x00000000008F0000-0x0000000000905000-memory.dmp

    Filesize

    84KB

  • memory/1480-52-0x00000000008F0000-0x0000000000905000-memory.dmp

    Filesize

    84KB

  • memory/1480-51-0x00000000008F0000-0x0000000000905000-memory.dmp

    Filesize

    84KB

  • memory/1480-35-0x00000000008F0000-0x0000000000905000-memory.dmp

    Filesize

    84KB

  • memory/1480-46-0x00000000008F0000-0x0000000000905000-memory.dmp

    Filesize

    84KB

  • memory/1480-44-0x00000000008F0000-0x0000000000905000-memory.dmp

    Filesize

    84KB

  • memory/1480-42-0x00000000008F0000-0x0000000000905000-memory.dmp

    Filesize

    84KB

  • memory/1480-40-0x00000000008F0000-0x0000000000905000-memory.dmp

    Filesize

    84KB

  • memory/1480-38-0x00000000008F0000-0x0000000000905000-memory.dmp

    Filesize

    84KB

  • memory/1480-0-0x00000000745DE000-0x00000000745DF000-memory.dmp

    Filesize

    4KB

  • memory/1480-65-0x00000000745D0000-0x0000000074CBE000-memory.dmp

    Filesize

    6.9MB

  • memory/1480-48-0x00000000008F0000-0x0000000000905000-memory.dmp

    Filesize

    84KB

  • memory/1480-22-0x00000000008F0000-0x0000000000905000-memory.dmp

    Filesize

    84KB

  • memory/1480-32-0x00000000008F0000-0x0000000000905000-memory.dmp

    Filesize

    84KB

  • memory/1480-27-0x00000000008F0000-0x0000000000905000-memory.dmp

    Filesize

    84KB

  • memory/1480-24-0x00000000008F0000-0x0000000000905000-memory.dmp

    Filesize

    84KB

  • memory/1480-20-0x00000000008F0000-0x0000000000905000-memory.dmp

    Filesize

    84KB

  • memory/1480-18-0x00000000008F0000-0x0000000000905000-memory.dmp

    Filesize

    84KB

  • memory/1480-16-0x00000000008F0000-0x0000000000905000-memory.dmp

    Filesize

    84KB

  • memory/1480-64-0x00000000008F0000-0x0000000000905000-memory.dmp

    Filesize

    84KB

  • memory/1480-14-0x00000000008F0000-0x0000000000905000-memory.dmp

    Filesize

    84KB

  • memory/1480-62-0x00000000008F0000-0x0000000000905000-memory.dmp

    Filesize

    84KB

  • memory/1480-61-0x00000000008F0000-0x0000000000905000-memory.dmp

    Filesize

    84KB

  • memory/1480-12-0x00000000008F0000-0x0000000000905000-memory.dmp

    Filesize

    84KB

  • memory/1480-10-0x00000000008F0000-0x0000000000905000-memory.dmp

    Filesize

    84KB

  • memory/1480-8-0x00000000008F0000-0x0000000000905000-memory.dmp

    Filesize

    84KB

  • memory/1480-6-0x00000000008F0000-0x0000000000905000-memory.dmp

    Filesize

    84KB

  • memory/1480-5-0x00000000008F0000-0x0000000000905000-memory.dmp

    Filesize

    84KB

  • memory/1480-4-0x00000000008F0000-0x000000000090C000-memory.dmp

    Filesize

    112KB

  • memory/2652-79-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/2652-68-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/2652-66-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/2652-549-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB