Analysis

  • max time kernel
    94s
  • max time network
    131s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240709-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
  • submitted
    13/07/2024, 09:49

General

  • Target
    3ef1d040731916fee2fe1317c53a0e363f05fd12f87b84563af86ac5d49f74c2.exe
  • Size 893KB
  • Sample240713-ltm62ayanc
  • SHA256 3ef1d040731916fee2fe1317c53a0e363f05fd12f87b84563af86ac5d49f74c2
  • 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

Signatures

  • Detect Vidar Stealer 12 IoCs
  • Stealc

    Stealc is an infostealer written in C++.

  • Vidar

    Vidar is an infostealer based on Arkei stealer.

  • Downloads MZ/PE file
  • Checks computer location settings 2 TTPs 2 IoCs

    Looks up country code configured in the registry, likely geofence.

  • 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.

  • 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
  • Enumerates processes with tasklist 1 TTPs 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 12 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of FindShellTrayWindow 3 IoCs
  • Suspicious use of SendNotifyMessage 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 30 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\3ef1d040731916fee2fe1317c53a0e363f05fd12f87b84563af86ac5d49f74c2.exe
    "C:\Users\Admin\AppData\Local\Temp\3ef1d040731916fee2fe1317c53a0e363f05fd12f87b84563af86ac5d49f74c2.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4732
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /k move Handjob Handjob.cmd & Handjob.cmd & exit
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3236
      • C:\Windows\SysWOW64\tasklist.exe
        tasklist
        3⤵
        • Enumerates processes with tasklist
        • Suspicious use of AdjustPrivilegeToken
        PID:1376
      • C:\Windows\SysWOW64\findstr.exe
        findstr /I "wrsa.exe opssvc.exe"
        3⤵
          PID:748
        • C:\Windows\SysWOW64\tasklist.exe
          tasklist
          3⤵
          • Enumerates processes with tasklist
          • Suspicious use of AdjustPrivilegeToken
          PID:4948
        • C:\Windows\SysWOW64\findstr.exe
          findstr /I "avastui.exe avgui.exe bdservicehost.exe nswscsvc.exe sophoshealth.exe"
          3⤵
            PID:4984
          • C:\Windows\SysWOW64\cmd.exe
            cmd /c md 787041
            3⤵
              PID:1208
            • C:\Windows\SysWOW64\findstr.exe
              findstr /V "SenatorsRamAspectYounger" Boat
              3⤵
                PID:4804
              • C:\Windows\SysWOW64\cmd.exe
                cmd /c copy /b Buffalo + Sims + Imagine 787041\l
                3⤵
                  PID:4060
                • C:\Users\Admin\AppData\Local\Temp\787041\Hist.pif
                  787041\Hist.pif 787041\l
                  3⤵
                  • Checks computer location settings
                  • Executes dropped EXE
                  • Loads dropped DLL
                  • Checks processor information in registry
                  • Suspicious behavior: EnumeratesProcesses
                  • Suspicious use of FindShellTrayWindow
                  • Suspicious use of SendNotifyMessage
                  • Suspicious use of SetWindowsHookEx
                  PID:4664
                • C:\Windows\SysWOW64\timeout.exe
                  timeout 15
                  3⤵
                  • Delays execution with timeout.exe
                  PID:3700

            Network

                  MITRE ATT&CK Enterprise v15

                  Replay Monitor

                  Loading Replay Monitor...

                  Downloads

                  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

                  Hist.pif

                  • Path C:\Users\Admin\AppData\Local\Temp\787041\Hist.pif
                  • Size 915KB
                  • SHA256 8498900e57a490404e7ec4d8159bee29aed5852ae88bd484141780eaadb727bb
                  • MD5 SHA1 SHA512 SSDEEP

                  l

                  • Path C:\Users\Admin\AppData\Local\Temp\787041\l
                  • Size 332KB
                  • SHA256 211ebcf1da9a7c77291924a0306ece4f3d8c8e64dc68d86977c5e0074d0c6f0f
                  • MD5 SHA1 SHA512 SSDEEP

                  Asus

                  • Path C:\Users\Admin\AppData\Local\Temp\Asus
                  • Size 57KB
                  • SHA256 8f4b8813a563587318f341b3750223395b16ad619c529808e1872a08e6680325
                  • MD5 SHA1 SHA512 SSDEEP

                  Boat

                  • Path C:\Users\Admin\AppData\Local\Temp\Boat
                  • Size 87B
                  • SHA256 f370c2b43464eb6b96c69bd209abd8c7e608a666afdbe9d9d5982eaeb2732075
                  • MD5 SHA1 SHA512

                  Brick

                  • Path C:\Users\Admin\AppData\Local\Temp\Brick
                  • Size 19KB
                  • SHA256 7ae126983794c0e1c924176b050bc83e8003ca7f202025a2cb3b8450e0f66a76
                  • MD5 SHA1 SHA512 SSDEEP

                  Buffalo

                  • Path C:\Users\Admin\AppData\Local\Temp\Buffalo
                  • Size 66KB
                  • SHA256 7e4f1971d0496b952bc184a06f7a18ac0eb768b0a48249504182a9e76e84677b
                  • MD5 SHA1 SHA512 SSDEEP

                  Bundle

                  • Path C:\Users\Admin\AppData\Local\Temp\Bundle
                  • Size 38KB
                  • SHA256 83e0fbf8829f18a0cafdfbd0cd3c75bbaa5f998a51a356f195f704567a1a91b5
                  • MD5 SHA1 SHA512 SSDEEP

                  Capabilities

                  • Path C:\Users\Admin\AppData\Local\Temp\Capabilities
                  • Size 38KB
                  • SHA256 d34cca46f56e7cbe04cea71fd44b9c520397b255c74e2c8305b6169d35016859
                  • MD5 SHA1 SHA512 SSDEEP

                  Collections

                  • Path C:\Users\Admin\AppData\Local\Temp\Collections
                  • Size 26KB
                  • SHA256 92efecd4def5608536eb9f1ae95f4fcd5e712da5863d6ffc9d8b9baf8e8cd3c6
                  • MD5 SHA1 SHA512 SSDEEP

                  Dropped

                  • Path C:\Users\Admin\AppData\Local\Temp\Dropped
                  • Size 32KB
                  • SHA256 efb698a56bda00816d23d5387170d8dfa4cfc73644d7627bcee9b6dffdbbdbae
                  • MD5 SHA1 SHA512 SSDEEP

                  Duty

                  • Path C:\Users\Admin\AppData\Local\Temp\Duty
                  • Size 20KB
                  • SHA256 310803e84bef4f3f07ed1a4baf50850fdd9e97a6930ad847619cc19cbc87d242
                  • MD5 SHA1 SHA512 SSDEEP

                  Effect

                  • Path C:\Users\Admin\AppData\Local\Temp\Effect
                  • Size 67KB
                  • SHA256 cfc5056296832cc22fbb3d2e004b202a1081aa558151c65292a8035ae2589a9b
                  • MD5 SHA1 SHA512 SSDEEP

                  Gazette

                  • Path C:\Users\Admin\AppData\Local\Temp\Gazette
                  • Size 5KB
                  • SHA256 ef7dd0b45adcd7b90dec55381fe68789604c15901f07dece8c081917cbc19d9b
                  • MD5 SHA1 SHA512 SSDEEP

                  Handjob

                  • Path C:\Users\Admin\AppData\Local\Temp\Handjob
                  • Size 19KB
                  • SHA256 2c81c16481d2d3dfd87eaa46e2e418cc995bc6bdd388c377d89242647f139ac1
                  • MD5 SHA1 SHA512 SSDEEP

                  Hints

                  • Path C:\Users\Admin\AppData\Local\Temp\Hints
                  • Size 20KB
                  • SHA256 df23dd5f30df93bcee92b12f01d56c5c699ce029790966ee79a303dae5437b61
                  • MD5 SHA1 SHA512 SSDEEP

                  Imagine

                  • Path C:\Users\Admin\AppData\Local\Temp\Imagine
                  • Size 91KB
                  • SHA256 661f25f5bdf5d98a4bd485be88b9326caebd8940e11844b81456ae5aa8ea5357
                  • MD5 SHA1 SHA512 SSDEEP

                  Invest

                  • Path C:\Users\Admin\AppData\Local\Temp\Invest
                  • Size 64KB
                  • SHA256 c906b5a16a51e4b1942fecc19678c2054e430ce1c244e38f741a43c3fee956d2
                  • MD5 SHA1 SHA512 SSDEEP

                  Knitting

                  • Path C:\Users\Admin\AppData\Local\Temp\Knitting
                  • Size 17KB
                  • SHA256 608ea6fafd807df035e91ae58106ea823916824c08b71167084bb8da88eebbf1
                  • MD5 SHA1 SHA512 SSDEEP

                  Mines

                  • Path C:\Users\Admin\AppData\Local\Temp\Mines
                  • Size 42KB
                  • SHA256 1e7d593c33abb8050d13bb2d9f6a416ff18a229eb8882a2a027d9fe0df122cbb
                  • MD5 SHA1 SHA512 SSDEEP

                  Perception

                  • Path C:\Users\Admin\AppData\Local\Temp\Perception
                  • Size 59KB
                  • SHA256 c3f642c6c92d913de4cbb28416ab8aebf1b9ee93d564d56690c0d21cb78e430f
                  • MD5 SHA1 SHA512 SSDEEP

                  Performed

                  • Path C:\Users\Admin\AppData\Local\Temp\Performed
                  • Size 38KB
                  • SHA256 e8c253866a40dd6a9e077d77b36945403829c421f76845c8d531217aaa4591cb
                  • MD5 SHA1 SHA512 SSDEEP

                  Reads

                  • Path C:\Users\Admin\AppData\Local\Temp\Reads
                  • Size 66KB
                  • SHA256 c7473c9801e5bb1009c2a55e712264dc580f7a8a592ec13c497c628361149d41
                  • MD5 SHA1 SHA512 SSDEEP

                  S

                  • Path C:\Users\Admin\AppData\Local\Temp\S
                  • Size 66KB
                  • SHA256 32895bf6b8b2e1762c83c8b844ee7b283594b2fdbdf90fe2062816876e42e6a0
                  • MD5 SHA1 SHA512 SSDEEP

                  Seemed

                  • Path C:\Users\Admin\AppData\Local\Temp\Seemed
                  • Size 58KB
                  • SHA256 428bdbe77f3e9172c652a8f68f9905241cb3c2102552e0a9e34ac8737979f0fa
                  • MD5 SHA1 SHA512 SSDEEP

                  Sensor

                  • Path C:\Users\Admin\AppData\Local\Temp\Sensor
                  • Size 20KB
                  • SHA256 955197f64a4cc44ac458fbe0a898a363b599d05da03bed9221f90cf03af2b4e9
                  • MD5 SHA1 SHA512 SSDEEP

                  Sims

                  • Path C:\Users\Admin\AppData\Local\Temp\Sims
                  • Size 175KB
                  • SHA256 e00db039679acec24fe210f04d51e4f1e494dab8c75ddc5b1280cab37a0aee25
                  • MD5 SHA1 SHA512 SSDEEP

                  Slight

                  • Path C:\Users\Admin\AppData\Local\Temp\Slight
                  • Size 5KB
                  • SHA256 f1b11d87709b9ead959019280be1f83b0131b24631bb4e6084ed21344b76cf7a
                  • MD5 SHA1 SHA512 SSDEEP

                  Suburban

                  • Path C:\Users\Admin\AppData\Local\Temp\Suburban
                  • Size 23KB
                  • SHA256 e18265f337aac2164bdf6d3f8b1fa9cab4facab718735f7cfb5bc5e118fdb685
                  • MD5 SHA1 SHA512 SSDEEP

                  Territories

                  • Path C:\Users\Admin\AppData\Local\Temp\Territories
                  • Size 27KB
                  • SHA256 bc7c3d22dbf2e75224a1d21ccef9de495eeb94e725589f5520048b470a8aef06
                  • MD5 SHA1 SHA512 SSDEEP

                  Univ

                  • Path C:\Users\Admin\AppData\Local\Temp\Univ
                  • Size 36KB
                  • SHA256 66c7e137e6c9bc95698e906837ce1609affbe3cfe6954297c0317136804aa8da
                  • MD5 SHA1 SHA512 SSDEEP

                  Unlimited

                  • Path C:\Users\Admin\AppData\Local\Temp\Unlimited
                  • Size 64KB
                  • SHA256 7b62754677446c7136b767a31cac2f68a1709c0b574f51ca4232846acb82c5f2
                  • MD5 SHA1 SHA512 SSDEEP

                  Yarn

                  • Path C:\Users\Admin\AppData\Local\Temp\Yarn
                  • Size 8KB
                  • SHA256 49c896032592fc4a4d5e2607c9a944bab3c7aeedbe0418201e3d04948e0aa1da
                  • MD5 SHA1 SHA512 SSDEEP

                  memory/4664-71-0x0000000003AB0000-0x0000000003CF8000-memory.dmp

                  memory/4664-93-0x0000000003AB0000-0x0000000003CF8000-memory.dmp

                  memory/4664-69-0x0000000003AB0000-0x0000000003CF8000-memory.dmp

                  memory/4664-76-0x0000000003AB0000-0x0000000003CF8000-memory.dmp

                  memory/4664-77-0x0000000003AB0000-0x0000000003CF8000-memory.dmp

                  memory/4664-78-0x000000000BBD0000-0x000000000BE2F000-memory.dmp

                  memory/4664-92-0x0000000003AB0000-0x0000000003CF8000-memory.dmp

                  memory/4664-70-0x0000000003AB0000-0x0000000003CF8000-memory.dmp

                  memory/4664-109-0x0000000003AB0000-0x0000000003CF8000-memory.dmp

                  memory/4664-110-0x0000000003AB0000-0x0000000003CF8000-memory.dmp

                  memory/4664-68-0x0000000003AB0000-0x0000000003CF8000-memory.dmp

                  memory/4664-67-0x0000000003AB0000-0x0000000003CF8000-memory.dmp

                  memory/4664-132-0x0000000003AB0000-0x0000000003CF8000-memory.dmp

                  memory/4664-133-0x0000000003AB0000-0x0000000003CF8000-memory.dmp

                  memory/4664-140-0x0000000003AB0000-0x0000000003CF8000-memory.dmp

                  memory/4664-141-0x0000000003AB0000-0x0000000003CF8000-memory.dmp