Analysis

  • max time kernel
    90s
  • max time network
    99s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29-03-2024 06:44

General

  • Target

    1b465c6989637df1d5c511919c43e457_JaffaCakes118.exe

  • Size

    861KB

  • MD5

    1b465c6989637df1d5c511919c43e457

  • SHA1

    317f8bf5133176cd0f4125c6f2f0fdfc226754ab

  • SHA256

    0b196e6b27ed15410bd946b1ccfd1de6b7af64a540cd0226b8eb9bd742d1b095

  • SHA512

    e9dfd465ee22ebf67a73fdd873440d73f013b064e2a4aff3aedad2c5bd1b3027284af7912a383ad6c0a91ef8caad2b3c69cdfd29edb638563d89fd7e89e114dc

  • SSDEEP

    24576:nc6zD+4oOZ34MRxbnCiZXsqK+eHTesb/hyDVeb:5D+NOZoax7CSX/g

Malware Config

Extracted

Family

quasar

Version

2.1.0.0

Botnet

Office04

C2

grace.adds-only.xyz:1609

Mutex

VNM_MUTEX_c2q7y2ayYutZ2XaYe7

Attributes
  • encryption_key

    wHq4o3k6UfKZv19jkcxs

  • install_name

    winrara.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Venom Client Startup

  • subdirectory

    SubDir

Signatures

  • Contains code to disable Windows Defender 1 IoCs

    A .NET executable tasked with disabling Windows Defender capabilities such as realtime monitoring, blocking at first seen, etc.

  • Modifies Windows Defender Real-time Protection settings 3 TTPs 4 IoCs
  • Quasar RAT

    Quasar is an open source Remote Access Tool.

  • Quasar payload 1 IoCs
  • VenomRAT

    VenomRAT is a modified version of QuasarRAT with some added features, such as rootkit and stealer capabilites.

  • Checks computer location settings 2 TTPs 3 IoCs

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

  • Executes dropped EXE 2 IoCs
  • Windows security modification 2 TTPs 2 IoCs
  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

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

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

  • Program crash 2 IoCs
  • Creates scheduled task(s) 1 TTPs 2 IoCs

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

  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 22 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of WriteProcessMemory 40 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\1b465c6989637df1d5c511919c43e457_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\1b465c6989637df1d5c511919c43e457_JaffaCakes118.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4960
    • 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\1b465c6989637df1d5c511919c43e457_JaffaCakes118.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:5012
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\kCCzCqEnSxl" /XML "C:\Users\Admin\AppData\Local\Temp\tmpB3BB.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:4568
    • C:\Users\Admin\AppData\Local\Temp\1b465c6989637df1d5c511919c43e457_JaffaCakes118.exe
      "C:\Users\Admin\AppData\Local\Temp\1b465c6989637df1d5c511919c43e457_JaffaCakes118.exe"
      2⤵
      • Modifies Windows Defender Real-time Protection settings
      • Checks computer location settings
      • Windows security modification
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:4348
      • C:\Users\Admin\AppData\Roaming\SubDir\winrara.exe
        "C:\Users\Admin\AppData\Roaming\SubDir\winrara.exe"
        3⤵
        • Checks computer location settings
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:1472
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\SubDir\winrara.exe"
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:1704
        • C:\Windows\SysWOW64\schtasks.exe
          "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\kCCzCqEnSxl" /XML "C:\Users\Admin\AppData\Local\Temp\tmp4F10.tmp"
          4⤵
          • Creates scheduled task(s)
          PID:456
        • C:\Users\Admin\AppData\Roaming\SubDir\winrara.exe
          "C:\Users\Admin\AppData\Roaming\SubDir\winrara.exe"
          4⤵
          • Executes dropped EXE
          PID:2012
          • C:\Windows\SysWOW64\cmd.exe
            C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\6KogI8HJBSwE.bat" "
            5⤵
              PID:4760
              • C:\Windows\SysWOW64\chcp.com
                chcp 65001
                6⤵
                  PID:464
                • C:\Windows\SysWOW64\PING.EXE
                  ping -n 10 localhost
                  6⤵
                  • Runs ping.exe
                  PID:2352
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -u -p 2012 -s 1692
                5⤵
                • Program crash
                PID:4420
          • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
            "powershell" Get-MpPreference -verbose
            3⤵
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:3452
          • C:\Windows\SysWOW64\cmd.exe
            "C:\Windows\System32\cmd.exe" /k start /b del /q/f/s %TEMP%\* & exit
            3⤵
            • Suspicious use of WriteProcessMemory
            PID:1652
            • C:\Windows\SysWOW64\cmd.exe
              C:\Windows\system32\cmd.exe /K del /q/f/s C:\Users\Admin\AppData\Local\Temp\*
              4⤵
                PID:2812
            • C:\Windows\SysWOW64\WerFault.exe
              C:\Windows\SysWOW64\WerFault.exe -u -p 4348 -s 2560
              3⤵
              • Program crash
              PID:4324
        • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
          "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=3804 --field-trial-handle=2264,i,15001568551143786084,90255922961447677,262144 --variations-seed-version /prefetch:8
          1⤵
            PID:2604
          • C:\Windows\SysWOW64\WerFault.exe
            C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4348 -ip 4348
            1⤵
              PID:4428
            • C:\Windows\SysWOW64\WerFault.exe
              C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 2012 -ip 2012
              1⤵
                PID:5012

              Network

              MITRE ATT&CK Enterprise v15

              Replay Monitor

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              Downloads

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

                Filesize

                2KB

                MD5

                968cb9309758126772781b83adb8a28f

                SHA1

                8da30e71accf186b2ba11da1797cf67f8f78b47c

                SHA256

                92099c10776bb7e3f2a8d1b82d4d40d0c4627e4f1bf754a6e58dfd2c2e97042a

                SHA512

                4bd50732f8af4d688d95999bddfd296115d7033ddc38f86c9fb1f47fde202bffa27e9088bebcaa3064ca946af2f5c1ca6cbde49d0907f0005c7ab42874515dd3

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

                Filesize

                18KB

                MD5

                4d744765fc4ad2dfc6aa1498113d820f

                SHA1

                757dc61acb942e1a20f3fae51abfb45b86cbc145

                SHA256

                908ab04882cfc595e53224d10b82afdb3eb7c3a4afe6001c3e9f382e8711ce3e

                SHA512

                fefec50021b1e652754282ade077d0508dd7dd2c6beebd53b7104af711ea8bc3e14d2b36990761785eecd66d4b5e0fee73a3b3b2566a239f617d4f8cfac93624

              • C:\Users\Admin\AppData\Local\Temp\6GW9hDfCLd1r.bat

                Filesize

                243B

                MD5

                51bfe982dac75e8ae94c2dc63f947e78

                SHA1

                7713ea28edb574178989f61c8f77c121959f3f2b

                SHA256

                ec9d20c1dc6c79e77e4f4c344bfd6404b1ea77935f28e60f66b04eef480f83f8

                SHA512

                923b7e31e89a72f2ae065b93b38520e8674a51a24b082e586aa87be54adcb83bf34be73c881d2a502845732896279c4493c029f771698fe063673d29d227a89f

              • C:\Users\Admin\AppData\Local\Temp\6KogI8HJBSwE.bat

                Filesize

                208B

                MD5

                e2711c6cf8bbaf0ce087c4a660f3a214

                SHA1

                ee537621ff261877eb5059e5d58cf9f5e01ae4d1

                SHA256

                0ccdeb17039dc5956753faf1ca5252e854b15e836a3d98b58fd87463ad86bb35

                SHA512

                029cf7b65a830e8e8527352141aeb2461cea63199cd5e743deb1b864456a24ce52176645fd5941dc164918c24012d20f053e51e3163b2502e1d2daf47a59d277

              • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_r3wj2syb.udg.ps1

                Filesize

                60B

                MD5

                d17fe0a3f47be24a6453e9ef58c94641

                SHA1

                6ab83620379fc69f80c0242105ddffd7d98d5d9d

                SHA256

                96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

                SHA512

                5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

              • C:\Users\Admin\AppData\Roaming\SubDir\winrara.exe

                Filesize

                861KB

                MD5

                1b465c6989637df1d5c511919c43e457

                SHA1

                317f8bf5133176cd0f4125c6f2f0fdfc226754ab

                SHA256

                0b196e6b27ed15410bd946b1ccfd1de6b7af64a540cd0226b8eb9bd742d1b095

                SHA512

                e9dfd465ee22ebf67a73fdd873440d73f013b064e2a4aff3aedad2c5bd1b3027284af7912a383ad6c0a91ef8caad2b3c69cdfd29edb638563d89fd7e89e114dc

              • memory/1472-119-0x0000000075290000-0x0000000075A40000-memory.dmp

                Filesize

                7.7MB

              • memory/1472-109-0x0000000007C10000-0x0000000007C20000-memory.dmp

                Filesize

                64KB

              • memory/1472-108-0x0000000075290000-0x0000000075A40000-memory.dmp

                Filesize

                7.7MB

              • memory/1472-53-0x0000000007C10000-0x0000000007C20000-memory.dmp

                Filesize

                64KB

              • memory/1472-49-0x0000000075290000-0x0000000075A40000-memory.dmp

                Filesize

                7.7MB

              • memory/1704-117-0x0000000004AB0000-0x0000000004AC0000-memory.dmp

                Filesize

                64KB

              • memory/1704-130-0x0000000005C30000-0x0000000005F84000-memory.dmp

                Filesize

                3.3MB

              • memory/1704-118-0x0000000004AB0000-0x0000000004AC0000-memory.dmp

                Filesize

                64KB

              • memory/1704-120-0x0000000075290000-0x0000000075A40000-memory.dmp

                Filesize

                7.7MB

              • memory/2012-116-0x0000000075290000-0x0000000075A40000-memory.dmp

                Filesize

                7.7MB

              • memory/3452-96-0x0000000007D30000-0x0000000007D44000-memory.dmp

                Filesize

                80KB

              • memory/3452-50-0x0000000075290000-0x0000000075A40000-memory.dmp

                Filesize

                7.7MB

              • memory/3452-101-0x0000000075290000-0x0000000075A40000-memory.dmp

                Filesize

                7.7MB

              • memory/3452-97-0x0000000007E30000-0x0000000007E4A000-memory.dmp

                Filesize

                104KB

              • memory/3452-95-0x0000000007D20000-0x0000000007D2E000-memory.dmp

                Filesize

                56KB

              • memory/3452-92-0x000000007FC10000-0x000000007FC20000-memory.dmp

                Filesize

                64KB

              • memory/3452-81-0x00000000710D0000-0x000000007111C000-memory.dmp

                Filesize

                304KB

              • memory/3452-79-0x0000000002E60000-0x0000000002E70000-memory.dmp

                Filesize

                64KB

              • memory/3452-52-0x0000000002E60000-0x0000000002E70000-memory.dmp

                Filesize

                64KB

              • memory/3452-51-0x0000000002E60000-0x0000000002E70000-memory.dmp

                Filesize

                64KB

              • memory/4348-105-0x0000000075290000-0x0000000075A40000-memory.dmp

                Filesize

                7.7MB

              • memory/4348-41-0x0000000006810000-0x0000000006822000-memory.dmp

                Filesize

                72KB

              • memory/4348-25-0x0000000005870000-0x0000000005880000-memory.dmp

                Filesize

                64KB

              • memory/4348-43-0x0000000006D90000-0x0000000006DCC000-memory.dmp

                Filesize

                240KB

              • memory/4348-106-0x0000000005870000-0x0000000005880000-memory.dmp

                Filesize

                64KB

              • memory/4348-20-0x0000000075290000-0x0000000075A40000-memory.dmp

                Filesize

                7.7MB

              • memory/4348-107-0x0000000075290000-0x0000000075A40000-memory.dmp

                Filesize

                7.7MB

              • memory/4348-17-0x0000000000400000-0x000000000048C000-memory.dmp

                Filesize

                560KB

              • memory/4960-6-0x00000000083D0000-0x000000000846C000-memory.dmp

                Filesize

                624KB

              • memory/4960-0-0x0000000075290000-0x0000000075A40000-memory.dmp

                Filesize

                7.7MB

              • memory/4960-7-0x0000000007350000-0x000000000735E000-memory.dmp

                Filesize

                56KB

              • memory/4960-8-0x0000000075290000-0x0000000075A40000-memory.dmp

                Filesize

                7.7MB

              • memory/4960-5-0x00000000070B0000-0x00000000070BA000-memory.dmp

                Filesize

                40KB

              • memory/4960-9-0x0000000007240000-0x0000000007250000-memory.dmp

                Filesize

                64KB

              • memory/4960-10-0x0000000008770000-0x0000000008820000-memory.dmp

                Filesize

                704KB

              • memory/4960-4-0x0000000007240000-0x0000000007250000-memory.dmp

                Filesize

                64KB

              • memory/4960-3-0x0000000006FF0000-0x0000000007082000-memory.dmp

                Filesize

                584KB

              • memory/4960-23-0x0000000075290000-0x0000000075A40000-memory.dmp

                Filesize

                7.7MB

              • memory/4960-2-0x00000000074A0000-0x0000000007A44000-memory.dmp

                Filesize

                5.6MB

              • memory/4960-1-0x00000000000A0000-0x000000000017E000-memory.dmp

                Filesize

                888KB

              • memory/5012-65-0x00000000710D0000-0x000000007111C000-memory.dmp

                Filesize

                304KB

              • memory/5012-78-0x0000000007BD0000-0x0000000007BEA000-memory.dmp

                Filesize

                104KB

              • memory/5012-93-0x0000000007E50000-0x0000000007EE6000-memory.dmp

                Filesize

                600KB

              • memory/5012-94-0x0000000007DD0000-0x0000000007DE1000-memory.dmp

                Filesize

                68KB

              • memory/5012-26-0x0000000005830000-0x0000000005852000-memory.dmp

                Filesize

                136KB

              • memory/5012-91-0x0000000075290000-0x0000000075A40000-memory.dmp

                Filesize

                7.7MB

              • memory/5012-28-0x0000000006180000-0x00000000061E6000-memory.dmp

                Filesize

                408KB

              • memory/5012-98-0x0000000007EF0000-0x0000000007EF8000-memory.dmp

                Filesize

                32KB

              • memory/5012-102-0x0000000075290000-0x0000000075A40000-memory.dmp

                Filesize

                7.7MB

              • memory/5012-24-0x0000000005430000-0x0000000005440000-memory.dmp

                Filesize

                64KB

              • memory/5012-16-0x0000000005260000-0x0000000005296000-memory.dmp

                Filesize

                216KB

              • memory/5012-21-0x0000000005A70000-0x0000000006098000-memory.dmp

                Filesize

                6.2MB

              • memory/5012-80-0x0000000007C40000-0x0000000007C4A000-memory.dmp

                Filesize

                40KB

              • memory/5012-27-0x00000000060A0000-0x0000000006106000-memory.dmp

                Filesize

                408KB

              • memory/5012-77-0x0000000008230000-0x00000000088AA000-memory.dmp

                Filesize

                6.5MB

              • memory/5012-76-0x00000000078C0000-0x0000000007963000-memory.dmp

                Filesize

                652KB

              • memory/5012-75-0x0000000006E80000-0x0000000006E9E000-memory.dmp

                Filesize

                120KB

              • memory/5012-63-0x000000007F740000-0x000000007F750000-memory.dmp

                Filesize

                64KB

              • memory/5012-64-0x0000000007880000-0x00000000078B2000-memory.dmp

                Filesize

                200KB

              • memory/5012-18-0x0000000075290000-0x0000000075A40000-memory.dmp

                Filesize

                7.7MB

              • memory/5012-38-0x0000000006270000-0x00000000065C4000-memory.dmp

                Filesize

                3.3MB

              • memory/5012-39-0x00000000068A0000-0x00000000068BE000-memory.dmp

                Filesize

                120KB

              • memory/5012-40-0x0000000006DE0000-0x0000000006E2C000-memory.dmp

                Filesize

                304KB

              • memory/5012-22-0x0000000005430000-0x0000000005440000-memory.dmp

                Filesize

                64KB

              • memory/5012-42-0x0000000005430000-0x0000000005440000-memory.dmp

                Filesize

                64KB