Analysis

  • max time kernel
    122s
  • max time network
    126s
  • platform
    windows7_x64
  • resource
    win7-20240611-en
  • resource tags

    arch:x64arch:x86image:win7-20240611-enlocale:en-usos:windows7-x64system
  • submitted
    17-06-2024 05:11

General

  • Target

    e185b5ac05bf0947b5fd19b8f0892afa4fcbbceba5fc76ad52ae3fdef2045829.exe

  • Size

    4.2MB

  • MD5

    8cfe70cf4f35c7f9b4ddba327d44c1f8

  • SHA1

    4fd044d2fee22138668153a7472b34e0b9a99c06

  • SHA256

    e185b5ac05bf0947b5fd19b8f0892afa4fcbbceba5fc76ad52ae3fdef2045829

  • SHA512

    aec1486ae4e64e8ca59baaf7a623fc4c6b56a3b3bcb6e46cadf82350799edfc62ede7bdb54fcbce490c5506e39f1dc778be160c130edcb6784667a448dafc811

  • SSDEEP

    49152:Yg0GkQNDv4gz+LzRdo/msRu92zAPZHPPumf7BQOyCEJ7eAPDbn5m0IcQgZV0Cego:yLNdo/TRuMyfPyCk7eIZIcQ0Ogo

Malware Config

Extracted

Family

stealc

rc4.plain

Extracted

Family

vidar

C2

https://t.me/memve4erin

https://steamcommunity.com/profiles/76561199699680841

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
  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • Suspicious use of SetThreadContext 1 IoCs
  • Checks processor information in registry 2 TTPs 1 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 18 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\e185b5ac05bf0947b5fd19b8f0892afa4fcbbceba5fc76ad52ae3fdef2045829.exe
    "C:\Users\Admin\AppData\Local\Temp\e185b5ac05bf0947b5fd19b8f0892afa4fcbbceba5fc76ad52ae3fdef2045829.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2268
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
      2⤵
      • Checks processor information in registry
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2608
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /c timeout /t 10 & rd /s /q "C:\ProgramData\BKFBAECBAEGD" & exit
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:2952
        • C:\Windows\SysWOW64\timeout.exe
          timeout /t 10
          4⤵
          • Delays execution with timeout.exe
          PID:2556

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

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

    Filesize

    342B

    MD5

    e9fbca65683e4257b5de2af09242b9b5

    SHA1

    d1ad3bfb745cb90ea8c931743d0b2344d223de84

    SHA256

    eac06fa0f9caaa409befa41358fdfa7ae88628d0bfaac555e8adead626e5f2a0

    SHA512

    c21e0f176731c60b734b5c573b6d70e21283f0abddd307cacf78d9e3bba42d83f8f2eda55a68d0691676ea09c640ab1cb2316f3bf31da1829a34b6d22d3ae78f

  • C:\Users\Admin\AppData\Local\Temp\Cab8519.tmp

    Filesize

    70KB

    MD5

    49aebf8cbd62d92ac215b2923fb1b9f5

    SHA1

    1723be06719828dda65ad804298d0431f6aff976

    SHA256

    b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

    SHA512

    bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

  • C:\Users\Admin\AppData\Local\Temp\Tar857A.tmp

    Filesize

    181KB

    MD5

    4ea6026cf93ec6338144661bf1202cd1

    SHA1

    a1dec9044f750ad887935a01430bf49322fbdcb7

    SHA256

    8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

    SHA512

    6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

  • memory/2268-18-0x0000000000650000-0x0000000000665000-memory.dmp

    Filesize

    84KB

  • memory/2268-52-0x0000000000650000-0x0000000000665000-memory.dmp

    Filesize

    84KB

  • memory/2268-5-0x0000000000650000-0x0000000000665000-memory.dmp

    Filesize

    84KB

  • memory/2268-34-0x0000000000650000-0x0000000000665000-memory.dmp

    Filesize

    84KB

  • memory/2268-64-0x0000000000650000-0x0000000000665000-memory.dmp

    Filesize

    84KB

  • memory/2268-62-0x0000000000650000-0x0000000000665000-memory.dmp

    Filesize

    84KB

  • memory/2268-60-0x0000000000650000-0x0000000000665000-memory.dmp

    Filesize

    84KB

  • memory/2268-58-0x0000000000650000-0x0000000000665000-memory.dmp

    Filesize

    84KB

  • memory/2268-56-0x0000000000650000-0x0000000000665000-memory.dmp

    Filesize

    84KB

  • memory/2268-54-0x0000000000650000-0x0000000000665000-memory.dmp

    Filesize

    84KB

  • memory/2268-48-0x0000000000650000-0x0000000000665000-memory.dmp

    Filesize

    84KB

  • memory/2268-46-0x0000000000650000-0x0000000000665000-memory.dmp

    Filesize

    84KB

  • memory/2268-45-0x0000000000650000-0x0000000000665000-memory.dmp

    Filesize

    84KB

  • memory/2268-42-0x0000000000650000-0x0000000000665000-memory.dmp

    Filesize

    84KB

  • memory/2268-41-0x0000000000650000-0x0000000000665000-memory.dmp

    Filesize

    84KB

  • memory/2268-81-0x0000000074E00000-0x00000000754EE000-memory.dmp

    Filesize

    6.9MB

  • memory/2268-38-0x0000000000650000-0x0000000000665000-memory.dmp

    Filesize

    84KB

  • memory/2268-37-0x0000000000650000-0x0000000000665000-memory.dmp

    Filesize

    84KB

  • memory/2268-1-0x0000000000B10000-0x0000000000F50000-memory.dmp

    Filesize

    4.2MB

  • memory/2268-2-0x0000000004C10000-0x0000000004CBA000-memory.dmp

    Filesize

    680KB

  • memory/2268-3-0x0000000074E00000-0x00000000754EE000-memory.dmp

    Filesize

    6.9MB

  • memory/2268-4-0x0000000000650000-0x000000000066C000-memory.dmp

    Filesize

    112KB

  • memory/2268-65-0x0000000074E00000-0x00000000754EE000-memory.dmp

    Filesize

    6.9MB

  • memory/2268-33-0x0000000000650000-0x0000000000665000-memory.dmp

    Filesize

    84KB

  • memory/2268-30-0x0000000000650000-0x0000000000665000-memory.dmp

    Filesize

    84KB

  • memory/2268-29-0x0000000000650000-0x0000000000665000-memory.dmp

    Filesize

    84KB

  • memory/2268-26-0x0000000000650000-0x0000000000665000-memory.dmp

    Filesize

    84KB

  • memory/2268-24-0x0000000000650000-0x0000000000665000-memory.dmp

    Filesize

    84KB

  • memory/2268-22-0x0000000000650000-0x0000000000665000-memory.dmp

    Filesize

    84KB

  • memory/2268-21-0x0000000000650000-0x0000000000665000-memory.dmp

    Filesize

    84KB

  • memory/2268-0-0x0000000074E0E000-0x0000000074E0F000-memory.dmp

    Filesize

    4KB

  • memory/2268-16-0x0000000000650000-0x0000000000665000-memory.dmp

    Filesize

    84KB

  • memory/2268-14-0x0000000000650000-0x0000000000665000-memory.dmp

    Filesize

    84KB

  • memory/2268-12-0x0000000000650000-0x0000000000665000-memory.dmp

    Filesize

    84KB

  • memory/2268-10-0x0000000000650000-0x0000000000665000-memory.dmp

    Filesize

    84KB

  • memory/2268-8-0x0000000000650000-0x0000000000665000-memory.dmp

    Filesize

    84KB

  • memory/2268-6-0x0000000000650000-0x0000000000665000-memory.dmp

    Filesize

    84KB

  • memory/2268-51-0x0000000000650000-0x0000000000665000-memory.dmp

    Filesize

    84KB

  • memory/2608-464-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/2608-68-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/2608-66-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/2608-80-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/2608-575-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB