Analysis

  • max time kernel
    121s
  • max time network
    156s
  • platform
    windows7_x64
  • resource
    win7-20240611-en
  • resource tags

    arch:x64arch:x86image:win7-20240611-enlocale:en-usos:windows7-x64system
  • submitted
    04-07-2024 22:43

General

  • Target

    a928fc7218f8b916a6c386f500634dc2f31772ed5da82173b257ccf4371bdee7.exe

  • Size

    4.3MB

  • MD5

    67cef2b94174d0883a8e8b9ad9c217c7

  • SHA1

    d674a6454b03d5190ea685112e68a6604eabfc39

  • SHA256

    a928fc7218f8b916a6c386f500634dc2f31772ed5da82173b257ccf4371bdee7

  • SHA512

    bd335514641c23f96063c92783bcc2e607c7765705aafa2e742b631c102c08704b1bc77ba61dce7f2267abd5e0e4a30653a50179f86689ecf348f5eb0057ea3c

  • SSDEEP

    49152:WgMCMqzvDxEHJKquC8nlPCx0jdt8not+bgZV014po/8QNT9Fr1:wGdlbInoM0bBO5H

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 3 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\a928fc7218f8b916a6c386f500634dc2f31772ed5da82173b257ccf4371bdee7.exe
    "C:\Users\Admin\AppData\Local\Temp\a928fc7218f8b916a6c386f500634dc2f31772ed5da82173b257ccf4371bdee7.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1216
    • 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:2680
      • C:\ProgramData\EHJJECBKKE.exe
        "C:\ProgramData\EHJJECBKKE.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of WriteProcessMemory
        PID:1712
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 1712 -s 96
          4⤵
          • Loads dropped DLL
          • Program crash
          PID:2848
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\system32\cmd.exe" /c timeout /t 10 & rd /s /q "C:\ProgramData\DAEBKKKEHDHD" & exit
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1324
        • C:\Windows\SysWOW64\timeout.exe
          timeout /t 10
          4⤵
          • Delays execution with timeout.exe
          PID:2924

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

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

    Filesize

    342B

    MD5

    f6dd47fb45d0422c595ea906ebc53636

    SHA1

    6ce12688979a3983b53a9f3bf5fc82a680a0edbd

    SHA256

    abee8531c2c91dcc99d81db66778430323502bd79585d3be8116b45acb767491

    SHA512

    a1b2015d76489fc8fd796a2ad322ffbc98b0d42c0e8140f26576317672702a63a06dfafb37b7d30316b5f31b307ba50a6ea4e870fdc7a80943f552c59b405ff3

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

    Filesize

    342B

    MD5

    839c59ed8e1ee42952e2efce07f35f0f

    SHA1

    e91d844e6ed405d5b6f87075a1eb16b3fe823e32

    SHA256

    19750b2a8171f021b8c8bc2c5fc9558f66059ba28e2ef14e4d23d3aee980edc3

    SHA512

    76126f7de9bc9400dbcd5d2245bf169ac3f292f81d52ae129beb2a53cd28b9ff3e177bff3f182ffffb1b05a6740db076c43b4f96315b127d0469d191b6137a99

  • C:\Users\Admin\AppData\Local\Temp\Cab28B8.tmp

    Filesize

    70KB

    MD5

    49aebf8cbd62d92ac215b2923fb1b9f5

    SHA1

    1723be06719828dda65ad804298d0431f6aff976

    SHA256

    b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

    SHA512

    bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

  • C:\Users\Admin\AppData\Local\Temp\Tar28DA.tmp

    Filesize

    181KB

    MD5

    4ea6026cf93ec6338144661bf1202cd1

    SHA1

    a1dec9044f750ad887935a01430bf49322fbdcb7

    SHA256

    8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

    SHA512

    6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

  • \ProgramData\EHJJECBKKE.exe

    Filesize

    937KB

    MD5

    168c5908924803d268d26965c32a5620

    SHA1

    9e0e2dc9c7e931c4ee860c32d83711c433f7b1a3

    SHA256

    2fd72d0d0fbc053a53adee5d9ec6cffde3fb5a3c6ba0c0490e24552b264d5449

    SHA512

    749f0e4da8d6fde35b53e769b0b594c2e63835f970eedc54c8c15889863811b5fb296650ae9f5e255bafdd4b942ad3434a60c48e05f1283820c378d30645f1c1

  • memory/1216-11-0x0000000000A90000-0x0000000000AA5000-memory.dmp

    Filesize

    84KB

  • memory/1216-59-0x0000000000A90000-0x0000000000AA5000-memory.dmp

    Filesize

    84KB

  • memory/1216-55-0x0000000000A90000-0x0000000000AA5000-memory.dmp

    Filesize

    84KB

  • memory/1216-41-0x0000000000A90000-0x0000000000AA5000-memory.dmp

    Filesize

    84KB

  • memory/1216-51-0x0000000000A90000-0x0000000000AA5000-memory.dmp

    Filesize

    84KB

  • memory/1216-49-0x0000000000A90000-0x0000000000AA5000-memory.dmp

    Filesize

    84KB

  • memory/1216-47-0x0000000000A90000-0x0000000000AA5000-memory.dmp

    Filesize

    84KB

  • memory/1216-45-0x0000000000A90000-0x0000000000AA5000-memory.dmp

    Filesize

    84KB

  • memory/1216-39-0x0000000000A90000-0x0000000000AA5000-memory.dmp

    Filesize

    84KB

  • memory/1216-37-0x0000000000A90000-0x0000000000AA5000-memory.dmp

    Filesize

    84KB

  • memory/1216-35-0x0000000000A90000-0x0000000000AA5000-memory.dmp

    Filesize

    84KB

  • memory/1216-31-0x0000000000A90000-0x0000000000AA5000-memory.dmp

    Filesize

    84KB

  • memory/1216-29-0x0000000000A90000-0x0000000000AA5000-memory.dmp

    Filesize

    84KB

  • memory/1216-27-0x0000000000A90000-0x0000000000AA5000-memory.dmp

    Filesize

    84KB

  • memory/1216-23-0x0000000000A90000-0x0000000000AA5000-memory.dmp

    Filesize

    84KB

  • memory/1216-21-0x0000000000A90000-0x0000000000AA5000-memory.dmp

    Filesize

    84KB

  • memory/1216-19-0x0000000000A90000-0x0000000000AA5000-memory.dmp

    Filesize

    84KB

  • memory/1216-25-0x0000000000A90000-0x0000000000AA5000-memory.dmp

    Filesize

    84KB

  • memory/1216-15-0x0000000000A90000-0x0000000000AA5000-memory.dmp

    Filesize

    84KB

  • memory/1216-77-0x0000000074760000-0x0000000074E4E000-memory.dmp

    Filesize

    6.9MB

  • memory/1216-9-0x0000000000A90000-0x0000000000AA5000-memory.dmp

    Filesize

    84KB

  • memory/1216-43-0x0000000000A90000-0x0000000000AA5000-memory.dmp

    Filesize

    84KB

  • memory/1216-53-0x0000000000A90000-0x0000000000AA5000-memory.dmp

    Filesize

    84KB

  • memory/1216-33-0x0000000000A90000-0x0000000000AA5000-memory.dmp

    Filesize

    84KB

  • memory/1216-17-0x0000000000A90000-0x0000000000AA5000-memory.dmp

    Filesize

    84KB

  • memory/1216-13-0x0000000000A90000-0x0000000000AA5000-memory.dmp

    Filesize

    84KB

  • memory/1216-7-0x0000000000A90000-0x0000000000AA5000-memory.dmp

    Filesize

    84KB

  • memory/1216-6-0x0000000000A90000-0x0000000000AA5000-memory.dmp

    Filesize

    84KB

  • memory/1216-5-0x0000000000A90000-0x0000000000AAC000-memory.dmp

    Filesize

    112KB

  • memory/1216-4-0x00000000053C0000-0x00000000054CC000-memory.dmp

    Filesize

    1.0MB

  • memory/1216-3-0x0000000074760000-0x0000000074E4E000-memory.dmp

    Filesize

    6.9MB

  • memory/1216-2-0x0000000000480000-0x000000000048A000-memory.dmp

    Filesize

    40KB

  • memory/1216-1-0x0000000000AB0000-0x0000000000F02000-memory.dmp

    Filesize

    4.3MB

  • memory/1216-0-0x000000007476E000-0x000000007476F000-memory.dmp

    Filesize

    4KB

  • memory/1216-57-0x0000000000A90000-0x0000000000AA5000-memory.dmp

    Filesize

    84KB

  • memory/1216-61-0x0000000000A90000-0x0000000000AA5000-memory.dmp

    Filesize

    84KB

  • memory/1216-63-0x0000000000A90000-0x0000000000AA5000-memory.dmp

    Filesize

    84KB

  • memory/1216-65-0x0000000000A90000-0x0000000000AA5000-memory.dmp

    Filesize

    84KB

  • memory/1216-69-0x0000000074760000-0x0000000074E4E000-memory.dmp

    Filesize

    6.9MB

  • memory/2680-76-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/2680-70-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/2680-68-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/2680-67-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/2680-66-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/2680-551-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB