Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240709-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
  • submitted
    16/07/2024, 17:42

General

  • Target
    file.exe
  • Size 3.7MB
  • Sample240716-v9zz7starp
  • SHA256 925d25b27a4a6cdfb2616b3cb64e258aaa63d7e8b19517a437cb5b5a2efd247a
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • vidar

C2
  • https://steamcommunity.com/profiles/76561199735694209

  • https://t.me/puffclou

Attributes
  • user_agent

    Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:128.1) Gecko/20100101 Firefox/128.1

Extracted

Family
  • lumma

C2
  • https://contemplateodszsv.shop/api

Signatures

  • Detect Vidar Stealer 8 IoCs
  • Lumma Stealer

    An infostealer written in C++ first seen in August 2022.

  • Stealc

    Stealc is an infostealer written in C++.

  • Vidar

    Vidar is an infostealer based on Arkei stealer.

  • Downloads MZ/PE file
  • Executes dropped EXE 2 IoCs
  • 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 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 3 IoCs
  • Program crash 2 IoCs
  • Checks processor information in registry 2 TTPs 4 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Delays execution with timeout.exe 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 14 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 48 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\file.exe
    "C:\Users\Admin\AppData\Local\Temp\file.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4636
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
      2⤵
        PID:8
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
        2⤵
        • Loads dropped DLL
        • Checks processor information in registry
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of WriteProcessMemory
        PID:2420
        • C:\ProgramData\JEGDGIIJJE.exe
          "C:\ProgramData\JEGDGIIJJE.exe"
          3⤵
          • Executes dropped EXE
          • Suspicious use of SetThreadContext
          • Suspicious use of WriteProcessMemory
          PID:4216
          • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
            "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
            4⤵
              PID:3496
            • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
              "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
              4⤵
                PID:1428
              • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
                "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
                4⤵
                • Checks processor information in registry
                • Suspicious behavior: EnumeratesProcesses
                PID:2892
            • C:\ProgramData\JKEHIIJJEC.exe
              "C:\ProgramData\JKEHIIJJEC.exe"
              3⤵
              • Executes dropped EXE
              • Suspicious use of SetThreadContext
              • Suspicious use of WriteProcessMemory
              PID:1332
              • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
                "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
                4⤵
                  PID:1448
                  • C:\Windows\SysWOW64\WerFault.exe
                    C:\Windows\SysWOW64\WerFault.exe -u -p 1448 -s 1200
                    5⤵
                    • Program crash
                    PID:1208
                  • C:\Windows\SysWOW64\WerFault.exe
                    C:\Windows\SysWOW64\WerFault.exe -u -p 1448 -s 1244
                    5⤵
                    • Program crash
                    PID:624
              • C:\Windows\SysWOW64\cmd.exe
                "C:\Windows\system32\cmd.exe" /c timeout /t 10 & rd /s /q "C:\ProgramData\IDAEBGCAAECA" & exit
                3⤵
                • Suspicious use of WriteProcessMemory
                PID:3468
                • C:\Windows\SysWOW64\timeout.exe
                  timeout /t 10
                  4⤵
                  • Delays execution with timeout.exe
                  PID:1740
          • C:\Windows\SysWOW64\WerFault.exe
            C:\Windows\SysWOW64\WerFault.exe -pss -s 376 -p 1448 -ip 1448
            1⤵
              PID:1636
            • C:\Windows\SysWOW64\WerFault.exe
              C:\Windows\SysWOW64\WerFault.exe -pss -s 504 -p 1448 -ip 1448
              1⤵
                PID:1240

              Network

                    MITRE ATT&CK Enterprise v15

                    Replay Monitor

                    Loading Replay Monitor...

                    Downloads

                    AFHDAE

                    • Path C:\ProgramData\EBAFBGIDHCBF\AFHDAE
                    • Size 124KB
                    • SHA256 a4cd72e529e60b5f74c50e4e5b159efaf80625f23534dd15a28203760b8b28ab
                    • MD5 SHA1 SHA512 SSDEEP

                    AFHDAE

                    • Path C:\ProgramData\EBAFBGIDHCBF\AFHDAE
                    • Size 160KB
                    • SHA256 e187946249cd390a3c1cf5d4e3b0d8f554f9acdc416bf4e7111fff217bb08855
                    • MD5 SHA1 SHA512 SSDEEP

                    AFHDAE

                    • Path C:\ProgramData\EBAFBGIDHCBF\AFHDAE
                    • Size 114KB
                    • SHA256 4396c42beb6ecd2c21773c212379dfa63b7a1361bf24e32c5271659609dcd5ef
                    • MD5 SHA1 SHA512 SSDEEP

                    JEGDGIIJJE.exe

                    • Path C:\ProgramData\JEGDGIIJJE.exe
                    • Size 431KB
                    • SHA256 f3f2ee666e572cea6eb5bcfd31fbfbc3b0edc9f99db528bb0a640751fb223033
                    • MD5 SHA1 SHA512 SSDEEP

                    JKEHIIJJEC.exe

                    • Path C:\ProgramData\JKEHIIJJEC.exe
                    • Size 518KB
                    • SHA256 1850a11acaede15b70cf7fc93830cd13ed4855f5e6226ef8110427fab9651ddf
                    • MD5 SHA1 SHA512 SSDEEP

                    mozglue.dll

                    • Path C:\ProgramData\mozglue.dll
                    • Size 593KB
                    • SHA256 ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a
                    • MD5 SHA1 SHA512 SSDEEP

                    nss3.dll

                    • Path C:\ProgramData\nss3.dll
                    • Size 2.0MB
                    • SHA256 ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5
                    • MD5 SHA1 SHA512 SSDEEP

                    EDC238BFF48A31D55A97E1E93892934B_C31B2498754E340573F1336DE607D619

                    • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\EDC238BFF48A31D55A97E1E93892934B_C31B2498754E340573F1336DE607D619
                    • Size 471B
                    • SHA256 6ebcc90e232c217e7a24c9961f7bcfca68ebd23ef4ea183bc5ff77d7a8580421
                    • MD5 SHA1 SHA512

                    EDC238BFF48A31D55A97E1E93892934B_C31B2498754E340573F1336DE607D619

                    • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\EDC238BFF48A31D55A97E1E93892934B_C31B2498754E340573F1336DE607D619
                    • Size 400B
                    • SHA256 80a066013ba9a66ee8ca96e6988bd6d8130e78e2a9c693c33983331b046ee15f
                    • MD5 SHA1 SHA512

                    76561199735694209[1].htm

                    • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\QOWVUGSW\76561199735694209[1].htm
                    • Size 34KB
                    • SHA256 8baba289c883fb78206760d8438c3e515305c96ef7f81e281e355493e5ce8c71
                    • MD5 SHA1 SHA512 SSDEEP

                    memory/2420-175-0x0000000000400000-0x0000000000648000-memory.dmp

                    memory/2420-66-0x0000000000400000-0x0000000000648000-memory.dmp

                    memory/2420-160-0x0000000000400000-0x0000000000648000-memory.dmp

                    memory/2420-68-0x0000000000400000-0x0000000000648000-memory.dmp

                    memory/2420-72-0x0000000000400000-0x0000000000648000-memory.dmp

                    memory/2420-79-0x0000000000400000-0x0000000000648000-memory.dmp

                    memory/2892-159-0x0000000000400000-0x0000000000648000-memory.dmp

                    memory/2892-212-0x0000000000400000-0x0000000000648000-memory.dmp

                    memory/4636-59-0x00000000029B0000-0x00000000029C5000-memory.dmp

                    memory/4636-11-0x00000000029B0000-0x00000000029C5000-memory.dmp

                    memory/4636-47-0x00000000029B0000-0x00000000029C5000-memory.dmp

                    memory/4636-45-0x00000000029B0000-0x00000000029C5000-memory.dmp

                    memory/4636-43-0x00000000029B0000-0x00000000029C5000-memory.dmp

                    memory/4636-41-0x00000000029B0000-0x00000000029C5000-memory.dmp

                    memory/4636-39-0x00000000029B0000-0x00000000029C5000-memory.dmp

                    memory/4636-37-0x00000000029B0000-0x00000000029C5000-memory.dmp

                    memory/4636-35-0x00000000029B0000-0x00000000029C5000-memory.dmp

                    memory/4636-33-0x00000000029B0000-0x00000000029C5000-memory.dmp

                    memory/4636-31-0x00000000029B0000-0x00000000029C5000-memory.dmp

                    memory/4636-29-0x00000000029B0000-0x00000000029C5000-memory.dmp

                    memory/4636-27-0x00000000029B0000-0x00000000029C5000-memory.dmp

                    memory/4636-25-0x00000000029B0000-0x00000000029C5000-memory.dmp

                    memory/4636-23-0x00000000029B0000-0x00000000029C5000-memory.dmp

                    memory/4636-19-0x00000000029B0000-0x00000000029C5000-memory.dmp

                    memory/4636-17-0x00000000029B0000-0x00000000029C5000-memory.dmp

                    memory/4636-15-0x00000000029B0000-0x00000000029C5000-memory.dmp

                    memory/4636-13-0x00000000029B0000-0x00000000029C5000-memory.dmp

                    memory/4636-49-0x00000000029B0000-0x00000000029C5000-memory.dmp

                    memory/4636-9-0x00000000029B0000-0x00000000029C5000-memory.dmp

                    memory/4636-6-0x00000000029B0000-0x00000000029C5000-memory.dmp

                    memory/4636-71-0x00000000746F0000-0x0000000074EA0000-memory.dmp

                    memory/4636-51-0x00000000029B0000-0x00000000029C5000-memory.dmp

                    memory/4636-53-0x00000000029B0000-0x00000000029C5000-memory.dmp

                    memory/4636-55-0x00000000029B0000-0x00000000029C5000-memory.dmp

                    memory/4636-57-0x00000000029B0000-0x00000000029C5000-memory.dmp

                    memory/4636-0-0x00000000746FE000-0x00000000746FF000-memory.dmp

                    memory/4636-61-0x00000000029B0000-0x00000000029C5000-memory.dmp

                    memory/4636-158-0x00000000746F0000-0x0000000074EA0000-memory.dmp

                    memory/4636-63-0x00000000029B0000-0x00000000029C5000-memory.dmp

                    memory/4636-70-0x00000000746F0000-0x0000000074EA0000-memory.dmp

                    memory/4636-65-0x00000000029B0000-0x00000000029C5000-memory.dmp

                    memory/4636-21-0x00000000029B0000-0x00000000029C5000-memory.dmp

                    memory/4636-7-0x00000000029B0000-0x00000000029C5000-memory.dmp

                    memory/4636-5-0x00000000029B0000-0x00000000029CC000-memory.dmp

                    memory/4636-4-0x00000000051B0000-0x00000000052C4000-memory.dmp

                    memory/4636-3-0x00000000746F0000-0x0000000074EA0000-memory.dmp

                    memory/4636-2-0x00000000050F0000-0x000000000518C000-memory.dmp

                    memory/4636-1-0x00000000002F0000-0x00000000006A0000-memory.dmp