Analysis

  • max time kernel
    238s
  • max time network
    239s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    23-09-2024 05:09

General

  • Target

    bf41950c2b87050f69bbcb6cb810e990d9a1f60a7109e8a3ba4668f2e397db96.exe

  • Size

    401KB

  • MD5

    5f1ea69f876e6c0b3f52c49cb56a5933

  • SHA1

    25efa25249943f752eb980d33a9945f126310fa9

  • SHA256

    bf41950c2b87050f69bbcb6cb810e990d9a1f60a7109e8a3ba4668f2e397db96

  • SHA512

    b6636579c7ef7b18e65bbf331527e3069c3b3c403fc21744f1692f1f882dc2e67ebc4c003ca857b2fa460fcc9e078f6c4dbbb1205d232f198e8046c7036dd2b3

  • SSDEEP

    12288:DuSEc/XKSAotoNQQGqlWAmyF0x3EGXY0kD:DIcPKTotHQ5Wzp5SD

Malware Config

Extracted

Family

vidar

Version

11

Botnet

b438a316528fda660b5e4e28911b77a1

C2

https://steamcommunity.com/profiles/76561199780418869

https://t.me/ae5ed

Attributes
  • user_agent

    Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:130.0) Gecko/20100101 Firefox/130.0

Signatures

  • Detect Vidar Stealer 14 IoCs
  • Vidar

    Vidar is an infostealer based on Arkei stealer.

  • Credentials from Password Stores: Credentials from Web Browsers 1 TTPs

    Malicious Access or copy of Web Browser Credential store.

  • Downloads MZ/PE file
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 6 IoCs
  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Unsecured Credentials: Credentials In Files 1 TTPs

    Steal credentials from unsecured files.

  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Suspicious use of SetThreadContext 2 IoCs
  • Browser Information Discovery 1 TTPs

    Enumerate browser information.

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 6 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • 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
  • Modifies system certificate store 2 TTPs 7 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of WriteProcessMemory 39 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\bf41950c2b87050f69bbcb6cb810e990d9a1f60a7109e8a3ba4668f2e397db96.exe
    "C:\Users\Admin\AppData\Local\Temp\bf41950c2b87050f69bbcb6cb810e990d9a1f60a7109e8a3ba4668f2e397db96.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3064
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Checks processor information in registry
      • Modifies system certificate store
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2812
      • C:\ProgramData\AAAAKJKJEB.exe
        "C:\ProgramData\AAAAKJKJEB.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2988
        • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
          "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
          4⤵
          • System Location Discovery: System Language Discovery
          • Modifies system certificate store
          PID:996
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\system32\cmd.exe" /c timeout /t 10 & rd /s /q "C:\ProgramData\JEBKECAFIDAF" & exit
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:1208
        • C:\Windows\SysWOW64\timeout.exe
          timeout /t 10
          4⤵
          • System Location Discovery: System Language Discovery
          • Delays execution with timeout.exe
          PID:2164

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\Cab5F42.tmp

    Filesize

    70KB

    MD5

    49aebf8cbd62d92ac215b2923fb1b9f5

    SHA1

    1723be06719828dda65ad804298d0431f6aff976

    SHA256

    b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

    SHA512

    bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

  • C:\Users\Admin\AppData\Local\Temp\Tar5F54.tmp

    Filesize

    181KB

    MD5

    4ea6026cf93ec6338144661bf1202cd1

    SHA1

    a1dec9044f750ad887935a01430bf49322fbdcb7

    SHA256

    8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

    SHA512

    6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

  • \ProgramData\AAAAKJKJEB.exe

    Filesize

    381KB

    MD5

    f5a1956973dce107d4c0b6267ce88870

    SHA1

    79a19513d7c9cff939f2881c4172a05dbaef735b

    SHA256

    7b794c5bdb820791f0359da90a9a4f258412b8feef9c6e6a0411f6aead9d3a04

    SHA512

    f42180c75c0ae8dc083c6fff98a66c0d875fadb400d7945816ea330a54777632a3a7752d3e78b90e45f58ed3d04d6708b1dcea51d82711356e6d14e405a7c579

  • \ProgramData\mozglue.dll

    Filesize

    593KB

    MD5

    c8fd9be83bc728cc04beffafc2907fe9

    SHA1

    95ab9f701e0024cedfbd312bcfe4e726744c4f2e

    SHA256

    ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a

    SHA512

    fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040

  • \ProgramData\nss3.dll

    Filesize

    2.0MB

    MD5

    1cc453cdf74f31e4d913ff9c10acdde2

    SHA1

    6e85eae544d6e965f15fa5c39700fa7202f3aafe

    SHA256

    ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5

    SHA512

    dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571

  • memory/996-528-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/996-526-0x0000000000400000-0x0000000000464000-memory.dmp

    Filesize

    400KB

  • memory/996-530-0x0000000000400000-0x0000000000464000-memory.dmp

    Filesize

    400KB

  • memory/996-536-0x0000000000400000-0x0000000000464000-memory.dmp

    Filesize

    400KB

  • memory/996-532-0x0000000000400000-0x0000000000464000-memory.dmp

    Filesize

    400KB

  • memory/996-524-0x0000000000400000-0x0000000000464000-memory.dmp

    Filesize

    400KB

  • memory/996-522-0x0000000000400000-0x0000000000464000-memory.dmp

    Filesize

    400KB

  • memory/996-520-0x0000000000400000-0x0000000000464000-memory.dmp

    Filesize

    400KB

  • memory/996-518-0x0000000000400000-0x0000000000464000-memory.dmp

    Filesize

    400KB

  • memory/2812-210-0x0000000000400000-0x0000000000675000-memory.dmp

    Filesize

    2.5MB

  • memory/2812-6-0x0000000000400000-0x0000000000675000-memory.dmp

    Filesize

    2.5MB

  • memory/2812-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2812-161-0x0000000000400000-0x0000000000675000-memory.dmp

    Filesize

    2.5MB

  • memory/2812-180-0x0000000000400000-0x0000000000675000-memory.dmp

    Filesize

    2.5MB

  • memory/2812-199-0x000000001DF20000-0x000000001E17F000-memory.dmp

    Filesize

    2.4MB

  • memory/2812-5-0x0000000000400000-0x0000000000675000-memory.dmp

    Filesize

    2.5MB

  • memory/2812-229-0x0000000000400000-0x0000000000675000-memory.dmp

    Filesize

    2.5MB

  • memory/2812-19-0x0000000000400000-0x0000000000675000-memory.dmp

    Filesize

    2.5MB

  • memory/2812-17-0x0000000000400000-0x0000000000675000-memory.dmp

    Filesize

    2.5MB

  • memory/2812-360-0x0000000000400000-0x0000000000675000-memory.dmp

    Filesize

    2.5MB

  • memory/2812-379-0x0000000000400000-0x0000000000675000-memory.dmp

    Filesize

    2.5MB

  • memory/2812-422-0x0000000000400000-0x0000000000675000-memory.dmp

    Filesize

    2.5MB

  • memory/2812-441-0x0000000000400000-0x0000000000675000-memory.dmp

    Filesize

    2.5MB

  • memory/2812-11-0x0000000000400000-0x0000000000675000-memory.dmp

    Filesize

    2.5MB

  • memory/2812-16-0x0000000000400000-0x0000000000675000-memory.dmp

    Filesize

    2.5MB

  • memory/2812-7-0x0000000000400000-0x0000000000675000-memory.dmp

    Filesize

    2.5MB

  • memory/2812-10-0x0000000000400000-0x0000000000675000-memory.dmp

    Filesize

    2.5MB

  • memory/2812-8-0x0000000000400000-0x0000000000675000-memory.dmp

    Filesize

    2.5MB

  • memory/2988-515-0x0000000072F20000-0x000000007360E000-memory.dmp

    Filesize

    6.9MB

  • memory/2988-535-0x0000000072F20000-0x000000007360E000-memory.dmp

    Filesize

    6.9MB

  • memory/2988-496-0x0000000000A10000-0x0000000000A70000-memory.dmp

    Filesize

    384KB

  • memory/2988-495-0x0000000072F2E000-0x0000000072F2F000-memory.dmp

    Filesize

    4KB

  • memory/2988-537-0x0000000072F20000-0x000000007360E000-memory.dmp

    Filesize

    6.9MB

  • memory/3064-0-0x00000000746EE000-0x00000000746EF000-memory.dmp

    Filesize

    4KB

  • memory/3064-22-0x00000000746E0000-0x0000000074DCE000-memory.dmp

    Filesize

    6.9MB

  • memory/3064-4-0x00000000746E0000-0x0000000074DCE000-memory.dmp

    Filesize

    6.9MB

  • memory/3064-2-0x00000000746E0000-0x0000000074DCE000-memory.dmp

    Filesize

    6.9MB

  • memory/3064-1-0x00000000011E0000-0x0000000001248000-memory.dmp

    Filesize

    416KB