Analysis

  • max time kernel
    149s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03-12-2024 08:53

General

  • Target

    Zamówienie - 021224 - 901003637.exe

  • Size

    3.7MB

  • MD5

    15f259b30ec72a5217144834f7f5b564

  • SHA1

    baed3fe7d059a497f856e263431ccd3872ef1ea1

  • SHA256

    01de053d9560d419f0b6c35dbddb1175eb1fd7a21450989332024b812d39c4c2

  • SHA512

    5e1148a9cf8008b7c38d067ec34e5c3bc7255341d114476532f8111ea2c3e654eb70b0a439aaaea22543576f09b9cec269f9b3414a6a24fc54b89c7c677c5f47

  • SSDEEP

    98304:ZrAsTIZbqqBQjwske/pCT66UNYekeWY0CE9:ZcCSL0ke/pO5ekeWtCE9

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

DAVID

C2

hoffmann3.ydns.eu:5829

Mutex

532aca2b-96ff-44aa-9213-031e975919ac

Attributes
  • encryption_key

    C5B555A83D127A9553D4FB1FCECB35CE8E91A447

  • install_name

    outlooks.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Outlooks

  • subdirectory

    WindowsUpdates

Signatures

  • Quasar RAT

    Quasar is an open source Remote Access Tool.

  • Quasar family
  • Quasar payload 1 IoCs
  • Command and Scripting Interpreter: PowerShell 1 TTPs 4 IoCs

    Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Executes dropped EXE 2 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 12 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Scheduled Task/Job: Scheduled Task 1 TTPs 4 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 10 IoCs
  • Suspicious use of AdjustPrivilegeToken 7 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 46 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Zamówienie - 021224 - 901003637.exe
    "C:\Users\Admin\AppData\Local\Temp\Zamówienie - 021224 - 901003637.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3352
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\Zamówienie - 021224 - 901003637.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3132
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\eNuXmIwkixzW.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2704
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\eNuXmIwkixzW" /XML "C:\Users\Admin\AppData\Local\Temp\tmpB66F.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:3676
    • C:\Users\Admin\AppData\Local\Temp\Zamówienie - 021224 - 901003637.exe
      "C:\Users\Admin\AppData\Local\Temp\Zamówienie - 021224 - 901003637.exe"
      2⤵
        PID:1052
      • C:\Users\Admin\AppData\Local\Temp\Zamówienie - 021224 - 901003637.exe
        "C:\Users\Admin\AppData\Local\Temp\Zamówienie - 021224 - 901003637.exe"
        2⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:4792
        • C:\Windows\SysWOW64\schtasks.exe
          "schtasks" /create /tn "Outlooks" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\WindowsUpdates\outlooks.exe" /rl HIGHEST /f
          3⤵
          • System Location Discovery: System Language Discovery
          • Scheduled Task/Job: Scheduled Task
          PID:2376
        • C:\Users\Admin\AppData\Roaming\WindowsUpdates\outlooks.exe
          "C:\Users\Admin\AppData\Roaming\WindowsUpdates\outlooks.exe"
          3⤵
          • Checks computer location settings
          • Executes dropped EXE
          • Suspicious use of SetThreadContext
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:5040
          • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
            "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\WindowsUpdates\outlooks.exe"
            4⤵
            • Command and Scripting Interpreter: PowerShell
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:5088
          • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
            "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\eNuXmIwkixzW.exe"
            4⤵
            • Command and Scripting Interpreter: PowerShell
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:3932
          • C:\Windows\SysWOW64\schtasks.exe
            "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\eNuXmIwkixzW" /XML "C:\Users\Admin\AppData\Local\Temp\tmp7EA.tmp"
            4⤵
            • System Location Discovery: System Language Discovery
            • Scheduled Task/Job: Scheduled Task
            PID:2600
          • C:\Users\Admin\AppData\Roaming\WindowsUpdates\outlooks.exe
            "C:\Users\Admin\AppData\Roaming\WindowsUpdates\outlooks.exe"
            4⤵
            • Executes dropped EXE
            • System Location Discovery: System Language Discovery
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of SetWindowsHookEx
            • Suspicious use of WriteProcessMemory
            PID:4148
            • C:\Windows\SysWOW64\schtasks.exe
              "schtasks" /create /tn "Outlooks" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\WindowsUpdates\outlooks.exe" /rl HIGHEST /f
              5⤵
              • System Location Discovery: System Language Discovery
              • Scheduled Task/Job: Scheduled Task
              PID:2360

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\Zamówienie - 021224 - 901003637.exe.log

      Filesize

      1KB

      MD5

      8ec831f3e3a3f77e4a7b9cd32b48384c

      SHA1

      d83f09fd87c5bd86e045873c231c14836e76a05c

      SHA256

      7667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982

      SHA512

      26bffa2406b66368bd412bf25869a792631455645992cdcade2dbc13a2e56fb546414a6a9223b94c96c38d89187add6678d4779a88b38b0c9e36be8527b213c3

    • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log

      Filesize

      2KB

      MD5

      3d086a433708053f9bf9523e1d87a4e8

      SHA1

      b3ab5d4f282a4c8fe8c3005b8a557ed5a0e37f28

      SHA256

      6f8fd1b8d9788ad54eaeee329232187e24b7b43393a01aeba2d6e9675231fb69

      SHA512

      931ae42b4c68a4507ff2342332b08eb407050d47cf4176137ea022d0f6e513c689e998445a04c6d18d4877391705c586bfce0234632b898d41aaed0957996dfd

    • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

      Filesize

      18KB

      MD5

      8017aa37b3b75440b4a379ff9730b7c1

      SHA1

      471e26a5a9be32ec7222b45379df53f3a37c7f8b

      SHA256

      019f01407d2d438a0e1878671fee7be958bce73b38d926888d05e2c2c7ccf57b

      SHA512

      5055be081e352d1c492b2733966da5cd7261e87dc061095ed40060306ae51cae585caf4746ef1ec94f11b53d09b23ba833f05f1af43062281e9719fea4932e33

    • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

      Filesize

      18KB

      MD5

      4be6bc885b36d1ba3be8c1a084556d4f

      SHA1

      5bddcb2ab1016e21f8b73efdefa32a783b6cdc35

      SHA256

      41d529d9ae6227cc46e668aed57e0fecf32712563b00c77c757d1e8621213157

      SHA512

      861313147b5f39d1c04688967fe7a1d65f17ed2fce6fb7487ac8e8787636c482dc535f2b142a4d9c099adca8a7b72fbaa02e110485fffd7ce30e4926b2c0863a

    • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_nhb3thtx.gty.ps1

      Filesize

      60B

      MD5

      d17fe0a3f47be24a6453e9ef58c94641

      SHA1

      6ab83620379fc69f80c0242105ddffd7d98d5d9d

      SHA256

      96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

      SHA512

      5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

    • C:\Users\Admin\AppData\Local\Temp\tmpB66F.tmp

      Filesize

      1KB

      MD5

      50d43628e187bbea668b3e52f2f07e06

      SHA1

      aa370d66ff251055645fc555fd540245d7b62310

      SHA256

      8aec60d93afabed35884dfe18df06408381df70b8948a7cc383826073e0c05f4

      SHA512

      778617376ac2bb976eabbea73a624b0ea9cb4df14c673a746ceafec0b1696f38d59c745b61383ab8c08522c68053b282761c1a678fabac86c4ab098a59ff8a3c

    • C:\Users\Admin\AppData\Roaming\WindowsUpdates\outlooks.exe

      Filesize

      3.7MB

      MD5

      15f259b30ec72a5217144834f7f5b564

      SHA1

      baed3fe7d059a497f856e263431ccd3872ef1ea1

      SHA256

      01de053d9560d419f0b6c35dbddb1175eb1fd7a21450989332024b812d39c4c2

      SHA512

      5e1148a9cf8008b7c38d067ec34e5c3bc7255341d114476532f8111ea2c3e654eb70b0a439aaaea22543576f09b9cec269f9b3414a6a24fc54b89c7c677c5f47

    • memory/2704-20-0x0000000075020000-0x00000000757D0000-memory.dmp

      Filesize

      7.7MB

    • memory/2704-85-0x0000000007690000-0x00000000076A4000-memory.dmp

      Filesize

      80KB

    • memory/2704-75-0x0000000007440000-0x000000000745A000-memory.dmp

      Filesize

      104KB

    • memory/2704-90-0x0000000075020000-0x00000000757D0000-memory.dmp

      Filesize

      7.7MB

    • memory/2704-62-0x0000000070570000-0x00000000705BC000-memory.dmp

      Filesize

      304KB

    • memory/2704-21-0x0000000075020000-0x00000000757D0000-memory.dmp

      Filesize

      7.7MB

    • memory/2704-87-0x0000000007770000-0x0000000007778000-memory.dmp

      Filesize

      32KB

    • memory/2704-19-0x0000000075020000-0x00000000757D0000-memory.dmp

      Filesize

      7.7MB

    • memory/3132-46-0x0000000005C60000-0x0000000005C7E000-memory.dmp

      Filesize

      120KB

    • memory/3132-23-0x0000000005590000-0x00000000055F6000-memory.dmp

      Filesize

      408KB

    • memory/3132-17-0x0000000004E60000-0x0000000005488000-memory.dmp

      Filesize

      6.2MB

    • memory/3132-83-0x0000000007190000-0x00000000071A1000-memory.dmp

      Filesize

      68KB

    • memory/3132-84-0x00000000071C0000-0x00000000071CE000-memory.dmp

      Filesize

      56KB

    • memory/3132-22-0x0000000004DA0000-0x0000000004DC2000-memory.dmp

      Filesize

      136KB

    • memory/3132-86-0x00000000072D0000-0x00000000072EA000-memory.dmp

      Filesize

      104KB

    • memory/3132-81-0x0000000007000000-0x000000000700A000-memory.dmp

      Filesize

      40KB

    • memory/3132-40-0x0000000005670000-0x00000000059C4000-memory.dmp

      Filesize

      3.3MB

    • memory/3132-47-0x0000000005D00000-0x0000000005D4C000-memory.dmp

      Filesize

      304KB

    • memory/3132-16-0x0000000075020000-0x00000000757D0000-memory.dmp

      Filesize

      7.7MB

    • memory/3132-18-0x0000000075020000-0x00000000757D0000-memory.dmp

      Filesize

      7.7MB

    • memory/3132-24-0x0000000005600000-0x0000000005666000-memory.dmp

      Filesize

      408KB

    • memory/3132-52-0x0000000070570000-0x00000000705BC000-memory.dmp

      Filesize

      304KB

    • memory/3132-63-0x0000000006210000-0x000000000622E000-memory.dmp

      Filesize

      120KB

    • memory/3132-15-0x0000000002320000-0x0000000002356000-memory.dmp

      Filesize

      216KB

    • memory/3132-73-0x0000000006F00000-0x0000000006FA3000-memory.dmp

      Filesize

      652KB

    • memory/3132-51-0x0000000006240000-0x0000000006272000-memory.dmp

      Filesize

      200KB

    • memory/3132-94-0x0000000075020000-0x00000000757D0000-memory.dmp

      Filesize

      7.7MB

    • memory/3132-74-0x0000000007630000-0x0000000007CAA000-memory.dmp

      Filesize

      6.5MB

    • memory/3132-82-0x0000000007210000-0x00000000072A6000-memory.dmp

      Filesize

      600KB

    • memory/3352-7-0x000000007502E000-0x000000007502F000-memory.dmp

      Filesize

      4KB

    • memory/3352-3-0x0000000007D20000-0x0000000007DB2000-memory.dmp

      Filesize

      584KB

    • memory/3352-5-0x00000000031A0000-0x00000000031AA000-memory.dmp

      Filesize

      40KB

    • memory/3352-49-0x0000000075020000-0x00000000757D0000-memory.dmp

      Filesize

      7.7MB

    • memory/3352-1-0x0000000000A20000-0x0000000000DCC000-memory.dmp

      Filesize

      3.7MB

    • memory/3352-6-0x0000000007DE0000-0x0000000007DF8000-memory.dmp

      Filesize

      96KB

    • memory/3352-8-0x0000000075020000-0x00000000757D0000-memory.dmp

      Filesize

      7.7MB

    • memory/3352-0-0x000000007502E000-0x000000007502F000-memory.dmp

      Filesize

      4KB

    • memory/3352-10-0x00000000072F0000-0x000000000738C000-memory.dmp

      Filesize

      624KB

    • memory/3352-4-0x0000000075020000-0x00000000757D0000-memory.dmp

      Filesize

      7.7MB

    • memory/3352-2-0x0000000008230000-0x00000000087D4000-memory.dmp

      Filesize

      5.6MB

    • memory/3352-9-0x0000000006A30000-0x0000000006D98000-memory.dmp

      Filesize

      3.4MB

    • memory/3932-136-0x0000000071780000-0x00000000717CC000-memory.dmp

      Filesize

      304KB

    • memory/4148-153-0x0000000008050000-0x000000000808C000-memory.dmp

      Filesize

      240KB

    • memory/4148-152-0x0000000007FF0000-0x0000000008002000-memory.dmp

      Filesize

      72KB

    • memory/4148-132-0x0000000006BF0000-0x0000000007208000-memory.dmp

      Filesize

      6.1MB

    • memory/4148-133-0x0000000006780000-0x00000000067D0000-memory.dmp

      Filesize

      320KB

    • memory/4148-134-0x00000000069F0000-0x0000000006AA2000-memory.dmp

      Filesize

      712KB

    • memory/4792-45-0x0000000000400000-0x0000000000724000-memory.dmp

      Filesize

      3.1MB

    • memory/5088-120-0x0000000006940000-0x000000000698C000-memory.dmp

      Filesize

      304KB

    • memory/5088-135-0x0000000007D30000-0x0000000007D41000-memory.dmp

      Filesize

      68KB

    • memory/5088-146-0x0000000007D80000-0x0000000007D94000-memory.dmp

      Filesize

      80KB

    • memory/5088-131-0x0000000007A20000-0x0000000007AC3000-memory.dmp

      Filesize

      652KB

    • memory/5088-121-0x0000000071780000-0x00000000717CC000-memory.dmp

      Filesize

      304KB

    • memory/5088-106-0x00000000062B0000-0x0000000006604000-memory.dmp

      Filesize

      3.3MB