Analysis

  • max time kernel
    72s
  • max time network
    138s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    11-12-2022 08:47

General

  • Target

    Setup..exe

  • Size

    468KB

  • MD5

    99ba29aa0086b1b1ac838d206b49715c

  • SHA1

    420bd23958b3c374da8267f7bf2675ccc8aa3de0

  • SHA256

    816c4a2117b90dc75d91056ca32a36ffd32d561aa433ee3f97126ba490e6d60a

  • SHA512

    efa8502876985ef4715dd443d338e6b934bbfef1f58a1e076b9d5c46734099bc31fdf685613d00b2825519934c3392d6aa73e91c631c2ea0436dd62d16e423a3

  • SSDEEP

    6144:zKTXzxwYramrvPrrvpu4n8FdBQDUlQRyYePgWNsyMr6/eUMMXW+hD1biEMuoQGdF:zKyY+8ciO3oA/9/T1b2OGBoNt2

Malware Config

Extracted

Family

vidar

Version

56.1

Botnet

909

C2

https://t.me/dishasta

https://steamcommunity.com/profiles/76561199441933804

Attributes
  • profile_id

    909

Signatures

  • Vidar

    Vidar is an infostealer based on Arkei stealer.

  • Loads dropped DLL 2 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Accesses 2FA software files, possible credential harvesting 2 TTPs
  • 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). Likely ransomware behaviour.

  • 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 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Setup..exe
    "C:\Users\Admin\AppData\Local\Temp\Setup..exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1292
    • C:\Users\Admin\AppData\Local\Temp\Setup..exe
      "C:\Users\Admin\AppData\Local\Temp\Setup..exe"
      2⤵
      • Loads dropped DLL
      • Checks processor information in registry
      • Modifies system certificate store
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:1208
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /c timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\Temp\Setup..exe" & exit
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1408
        • C:\Windows\SysWOW64\timeout.exe
          timeout /t 6
          4⤵
          • Delays execution with timeout.exe
          PID:1792

Network

MITRE ATT&CK Matrix ATT&CK v6

Defense Evasion

Install Root Certificate

1
T1130

Modify Registry

1
T1112

Credential Access

Credentials in Files

3
T1081

Discovery

Query Registry

2
T1012

System Information Discovery

2
T1082

Collection

Data from Local System

3
T1005

Replay Monitor

Loading Replay Monitor...

Downloads

  • \ProgramData\mozglue.dll
    Filesize

    133KB

    MD5

    8f73c08a9660691143661bf7332c3c27

    SHA1

    37fa65dd737c50fda710fdbde89e51374d0c204a

    SHA256

    3fe6b1c54b8cf28f571e0c5d6636b4069a8ab00b4f11dd842cfec00691d0c9cd

    SHA512

    0042ecf9b3571bb5eba2de893e8b2371df18f7c5a589f52ee66e4bfbaa15a5b8b7cc6a155792aaa8988528c27196896d5e82e1751c998bacea0d92395f66ad89

  • \ProgramData\nss3.dll
    Filesize

    1.2MB

    MD5

    bfac4e3c5908856ba17d41edcd455a51

    SHA1

    8eec7e888767aa9e4cca8ff246eb2aacb9170428

    SHA256

    e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78

    SHA512

    2565bab776c4d732ffb1f9b415992a4c65b81bcd644a9a1df1333a269e322925fc1df4f76913463296efd7c88ef194c3056de2f1ca1357d7b5fe5ff0da877a66

  • memory/1208-62-0x0000000000400000-0x000000000045F000-memory.dmp
    Filesize

    380KB

  • memory/1208-68-0x00000000759C1000-0x00000000759C3000-memory.dmp
    Filesize

    8KB

  • memory/1208-92-0x0000000000400000-0x000000000045F000-memory.dmp
    Filesize

    380KB

  • memory/1208-58-0x0000000000400000-0x000000000045F000-memory.dmp
    Filesize

    380KB

  • memory/1208-64-0x0000000000400000-0x000000000045F000-memory.dmp
    Filesize

    380KB

  • memory/1208-65-0x000000000042358C-mapping.dmp
  • memory/1208-67-0x0000000000400000-0x000000000045F000-memory.dmp
    Filesize

    380KB

  • memory/1208-60-0x0000000000400000-0x000000000045F000-memory.dmp
    Filesize

    380KB

  • memory/1208-69-0x0000000000400000-0x000000000045F000-memory.dmp
    Filesize

    380KB

  • memory/1208-70-0x0000000060900000-0x0000000060992000-memory.dmp
    Filesize

    584KB

  • memory/1208-56-0x0000000000400000-0x000000000045F000-memory.dmp
    Filesize

    380KB

  • memory/1208-55-0x0000000000400000-0x000000000045F000-memory.dmp
    Filesize

    380KB

  • memory/1292-54-0x0000000000FF0000-0x000000000106A000-memory.dmp
    Filesize

    488KB

  • memory/1408-91-0x0000000000000000-mapping.dmp
  • memory/1792-93-0x0000000000000000-mapping.dmp