Analysis

  • max time kernel
    119s
  • max time network
    121s
  • platform
    windows7_x64
  • resource
    win7-20240611-en
  • resource tags

    arch:x64arch:x86image:win7-20240611-enlocale:en-usos:windows7-x64system
  • submitted
    29-06-2024 00:29

General

  • Target

    dee45b3ad0c841d54049061df5775ec0.exe

  • Size

    2.2MB

  • MD5

    dee45b3ad0c841d54049061df5775ec0

  • SHA1

    6fcbcf0d362d83ac346576ec8ba66b0cb3f1b4fd

  • SHA256

    159e547225b9f035bf95279055d66810149fa93debea660766552008271e3e5c

  • SHA512

    df3adca29d98c6bacbb9ecec498425f72a722aab2f187231689f5b7b959d8fa8b561ff0846ee0c8a495b204e6445305bbe56063672512f27369adba3e39978f2

  • SSDEEP

    49152:qpjNvr9ySAOmw4FHHO+SASagXkJr4MDkUwm:qpjNp7p4FHH8n5A

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 17 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 2 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.

  • 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 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • 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 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\dee45b3ad0c841d54049061df5775ec0.exe
    "C:\Users\Admin\AppData\Local\Temp\dee45b3ad0c841d54049061df5775ec0.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1656
    • C:\Users\Admin\AppData\Local\Temp\kat15F1.tmp
      C:\Users\Admin\AppData\Local\Temp\kat15F1.tmp
      2⤵
      • Executes dropped EXE
      • Checks processor information in registry
      • Modifies system certificate store
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:912
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\system32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Users\Admin\AppData\Local\Temp\kat15F1.tmp" & rd /s /q "C:\ProgramData\EHIDAKECFIEB" & exit
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:2872
        • C:\Windows\SysWOW64\timeout.exe
          timeout /t 10
          4⤵
          • Delays execution with timeout.exe
          PID:872

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

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

    Filesize

    342B

    MD5

    694d8cad1ec9ccb15da95727ce1fd751

    SHA1

    9a3eaaeb1bf65e514fdb35d9456886d0e292be50

    SHA256

    5ce10526c822d58833bec30bb8396afaa63104a896806eb1e806692b1fbddc03

    SHA512

    63f8eda3ec4fa263787cb52ebaa3e28aa1fcc3b0f328e42017ace9f4c732dc3da98956b93ed890b304ada94ffa77d42521ac83eb936a0253046ceb90c150fa71

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

    Filesize

    342B

    MD5

    653df58168c88e0838b3d262c9018e29

    SHA1

    125378d4146f1b88c53c8b8c4d58a300e577a59f

    SHA256

    3bf415cf652a0ab96b5fcff11b2b00b761723f7842fae09eea47b03ddc564ead

    SHA512

    03ab3cc19c888a453e0d1b6fee9d3670aadb7f7eff6a8e2e098fb93f20bb6a260ca1a61a3afe65e5f285d757ea240c1be4cbfdcba2378571cfe2afd141f670f9

  • C:\Users\Admin\AppData\Local\Temp\Cab402E.tmp

    Filesize

    67KB

    MD5

    2d3dcf90f6c99f47e7593ea250c9e749

    SHA1

    51be82be4a272669983313565b4940d4b1385237

    SHA256

    8714e7be9f9b6de26673d9d09bd4c9f41b1b27ae10b1d56a7ad83abd7430ebd4

    SHA512

    9c11dd7d448ffebe2167acde37be77d42175edacf5aaf6fb31d3bdfe6bb1f63f5fdbc9a0a2125ed9d5ce0529b6b548818c8021532e1ea6b324717cc9bec0aaa5

  • C:\Users\Admin\AppData\Local\Temp\Tar45B1.tmp

    Filesize

    160KB

    MD5

    7186ad693b8ad9444401bd9bcd2217c2

    SHA1

    5c28ca10a650f6026b0df4737078fa4197f3bac1

    SHA256

    9a71fa0cb44aa51412b16a0bf83a275977ba4e807d022f78364338b99b3a3eed

    SHA512

    135be0e6370fd057762c56149526f46bf6a62fb65ef5b3b26ae01fa07b4c4e37188e203bd3812f31e260ec5cccff5924633dd55ab17e9fa106479783c2fb212b

  • \Users\Admin\AppData\Local\Temp\kat15F1.tmp

    Filesize

    861KB

    MD5

    66064dbdb70a5eb15ebf3bf65aba254b

    SHA1

    0284fd320f99f62aca800fb1251eff4c31ec4ed7

    SHA256

    6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795

    SHA512

    b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

  • memory/912-13-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/912-430-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/912-137-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/912-11-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/912-9-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/912-24-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/912-23-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/912-15-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/912-55-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/912-170-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/912-17-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/912-19-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/912-397-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/912-173-0x000000001DBC0000-0x000000001DE1F000-memory.dmp

    Filesize

    2.4MB

  • memory/912-181-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/912-189-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/912-380-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/912-229-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/912-362-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/912-379-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/1656-1-0x0000000003270000-0x0000000003380000-memory.dmp

    Filesize

    1.1MB

  • memory/1656-0-0x00000000001B0000-0x00000000001B1000-memory.dmp

    Filesize

    4KB

  • memory/1656-21-0x0000000000400000-0x0000000000635000-memory.dmp

    Filesize

    2.2MB