Analysis

  • max time kernel
    142s
  • max time network
    138s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • submitted
    08-09-2022 12:37

General

  • Target

    f20d8f923ba4065f004bbb79086a8637.exe

  • Size

    608KB

  • MD5

    f20d8f923ba4065f004bbb79086a8637

  • SHA1

    f43809b21b6e4dc9eba2d4681b2d8fc10384edc3

  • SHA256

    3b275eb3041764efa0c25789652714f73013eba1cca9636d1dd201db733e16c1

  • SHA512

    70bc9ea694a32ef7625ddc33b40d0a0c0c7e149886938304052740ac45d1d547fd8d2a08e085103fe6a9a8b7d165f3364a770e92ab0c8b00235e77e56ef84867

  • SSDEEP

    12288:NFG1MZ0KtvusH5nfVwcCU/gb5uGJ5j/irX7fy29C+A30Fo9srKdMEFqW3QjyVInn:y185ndiU/4J/irX7q2MV0kWYyeJni

Malware Config

Extracted

Family

vidar

Version

54.2

Botnet

1438

C2

https://t.me/tigogames

https://ioc.exchange/@tiagoa26

Attributes
  • profile_id

    1438

Signatures

  • Vidar

    Vidar is an infostealer based on Arkei stealer.

  • Loads dropped DLL 2 IoCs
  • Accesses 2FA software files, possible credential harvesting 2 TTPs
  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • Suspicious use of SetThreadContext 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
  • Kills process with taskkill 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\f20d8f923ba4065f004bbb79086a8637.exe
    "C:\Users\Admin\AppData\Local\Temp\f20d8f923ba4065f004bbb79086a8637.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:5056
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe"
      2⤵
      • Loads dropped DLL
      • Checks processor information in registry
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2016
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /c taskkill /im AppLaunch.exe /f & timeout /t 6 & del /f /q "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe" & del C:\PrograData\*.dll & exit
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1276
        • C:\Windows\SysWOW64\taskkill.exe
          taskkill /im AppLaunch.exe /f
          4⤵
          • Kills process with taskkill
          • Suspicious use of AdjustPrivilegeToken
          PID:1360
        • C:\Windows\SysWOW64\timeout.exe
          timeout /t 6
          4⤵
          • Delays execution with timeout.exe
          PID:3180
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 2016 -ip 2016
    1⤵
      PID:688

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Credential Access

    Credentials in Files

    2
    T1081

    Discovery

    Query Registry

    1
    T1012

    System Information Discovery

    1
    T1082

    Collection

    Data from Local System

    2
    T1005

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\ProgramData\mozglue.dll
      Filesize

      133KB

      MD5

      8f73c08a9660691143661bf7332c3c27

      SHA1

      37fa65dd737c50fda710fdbde89e51374d0c204a

      SHA256

      3fe6b1c54b8cf28f571e0c5d6636b4069a8ab00b4f11dd842cfec00691d0c9cd

      SHA512

      0042ecf9b3571bb5eba2de893e8b2371df18f7c5a589f52ee66e4bfbaa15a5b8b7cc6a155792aaa8988528c27196896d5e82e1751c998bacea0d92395f66ad89

    • C:\ProgramData\nss3.dll
      Filesize

      1.2MB

      MD5

      bfac4e3c5908856ba17d41edcd455a51

      SHA1

      8eec7e888767aa9e4cca8ff246eb2aacb9170428

      SHA256

      e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78

      SHA512

      2565bab776c4d732ffb1f9b415992a4c65b81bcd644a9a1df1333a269e322925fc1df4f76913463296efd7c88ef194c3056de2f1ca1357d7b5fe5ff0da877a66

    • memory/1276-161-0x0000000000000000-mapping.dmp
    • memory/1360-162-0x0000000000000000-mapping.dmp
    • memory/2016-132-0x0000000000000000-mapping.dmp
    • memory/2016-133-0x0000000000400000-0x000000000045D000-memory.dmp
      Filesize

      372KB

    • memory/2016-139-0x0000000000400000-0x000000000045D000-memory.dmp
      Filesize

      372KB

    • memory/2016-140-0x0000000060900000-0x0000000060992000-memory.dmp
      Filesize

      584KB

    • memory/3180-163-0x0000000000000000-mapping.dmp