Analysis

  • max time kernel
    94s
  • max time network
    151s
  • 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 13:07

General

  • Target

    Bestellung - 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 14 IoCs
  • Suspicious use of AdjustPrivilegeToken 7 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 52 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Bestellung - 021224 - 901003637.exe
    "C:\Users\Admin\AppData\Local\Temp\Bestellung - 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:4080
    • 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\Bestellung - 021224 - 901003637.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3372
    • 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:1724
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\eNuXmIwkixzW" /XML "C:\Users\Admin\AppData\Local\Temp\tmpBC99.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:1276
    • C:\Users\Admin\AppData\Local\Temp\Bestellung - 021224 - 901003637.exe
      "C:\Users\Admin\AppData\Local\Temp\Bestellung - 021224 - 901003637.exe"
      2⤵
        PID:3536
      • C:\Users\Admin\AppData\Local\Temp\Bestellung - 021224 - 901003637.exe
        "C:\Users\Admin\AppData\Local\Temp\Bestellung - 021224 - 901003637.exe"
        2⤵
          PID:3920
        • C:\Users\Admin\AppData\Local\Temp\Bestellung - 021224 - 901003637.exe
          "C:\Users\Admin\AppData\Local\Temp\Bestellung - 021224 - 901003637.exe"
          2⤵
            PID:1144
          • C:\Users\Admin\AppData\Local\Temp\Bestellung - 021224 - 901003637.exe
            "C:\Users\Admin\AppData\Local\Temp\Bestellung - 021224 - 901003637.exe"
            2⤵
            • System Location Discovery: System Language Discovery
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of WriteProcessMemory
            PID:1544
            • 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:4440
            • 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:316
              • 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:4768
              • 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:4720
              • C:\Windows\SysWOW64\schtasks.exe
                "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\eNuXmIwkixzW" /XML "C:\Users\Admin\AppData\Local\Temp\tmpAA9.tmp"
                4⤵
                • System Location Discovery: System Language Discovery
                • Scheduled Task/Job: Scheduled Task
                PID:2084
              • 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:4280
                • 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:1500

        Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\Bestellung - 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

          968cb9309758126772781b83adb8a28f

          SHA1

          8da30e71accf186b2ba11da1797cf67f8f78b47c

          SHA256

          92099c10776bb7e3f2a8d1b82d4d40d0c4627e4f1bf754a6e58dfd2c2e97042a

          SHA512

          4bd50732f8af4d688d95999bddfd296115d7033ddc38f86c9fb1f47fde202bffa27e9088bebcaa3064ca946af2f5c1ca6cbde49d0907f0005c7ab42874515dd3

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

          Filesize

          18KB

          MD5

          cfe06049ad5a5e5f8636c513454ad9c5

          SHA1

          ee57e436c72454a1d816de0408e419d3c0ca80ff

          SHA256

          8b0750765a96ab6ca3f3dc1b562e5e79b2fe4a796ed99cbeaf35c5b51d6bab68

          SHA512

          d426ece48cef015c7c425a0f93c5a22ceb4a5f4953582ecfc48dbd1bb2ae10cc39cf402696b30d0637b6a3456878260f379b19e0cbb7ba346de14c4c1b18359c

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

          Filesize

          18KB

          MD5

          9242a330a4840fdc95e8771da8e02939

          SHA1

          f0ab5ca8c1fc26474f87456ee56a2152a5317f0f

          SHA256

          0c726b6a652e1b0db2942a4a9f325c60043508c3f13c65a1dfbd5202d35e8393

          SHA512

          df599707b5879e7fd47b45995632b5399f7a7f6c718dc19985db98c0ed2f2abef1a1b9a0e9903d0c2dd8184964ca7248809bb99b09092e69ae34877b3119763c

        • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_rrz5pcys.o54.ps1

          Filesize

          60B

          MD5

          d17fe0a3f47be24a6453e9ef58c94641

          SHA1

          6ab83620379fc69f80c0242105ddffd7d98d5d9d

          SHA256

          96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

          SHA512

          5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

        • C:\Users\Admin\AppData\Local\Temp\tmpBC99.tmp

          Filesize

          1KB

          MD5

          db5eaef32fa684b9b75b9f36fd0cf1cf

          SHA1

          cceb001be3d4572c7085c77fcdc26a0620e495bc

          SHA256

          4885fe7a2de46559607d059d8142cdda52eadf10744f63b13b75e26162e12c17

          SHA512

          9a558fe81c737c55ed31f7e97d3df3f2e3738fb6554f992c56bd9f75f4c186e792c2d2948832ed72fbd9f03658a336f35d5e4d707fa656d08cf805da9cd7dce6

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

          Filesize

          3.7MB

          MD5

          15f259b30ec72a5217144834f7f5b564

          SHA1

          baed3fe7d059a497f856e263431ccd3872ef1ea1

          SHA256

          01de053d9560d419f0b6c35dbddb1175eb1fd7a21450989332024b812d39c4c2

          SHA512

          5e1148a9cf8008b7c38d067ec34e5c3bc7255341d114476532f8111ea2c3e654eb70b0a439aaaea22543576f09b9cec269f9b3414a6a24fc54b89c7c677c5f47

        • memory/1544-46-0x0000000000400000-0x0000000000724000-memory.dmp

          Filesize

          3.1MB

        • memory/1724-73-0x000000006FF20000-0x000000006FF6C000-memory.dmp

          Filesize

          304KB

        • memory/1724-85-0x0000000007000000-0x000000000700E000-memory.dmp

          Filesize

          56KB

        • memory/1724-19-0x00000000749B0000-0x0000000075160000-memory.dmp

          Filesize

          7.7MB

        • memory/1724-45-0x00000000749B0000-0x0000000075160000-memory.dmp

          Filesize

          7.7MB

        • memory/1724-35-0x00000000749B0000-0x0000000075160000-memory.dmp

          Filesize

          7.7MB

        • memory/1724-94-0x00000000749B0000-0x0000000075160000-memory.dmp

          Filesize

          7.7MB

        • memory/3372-53-0x000000006FF20000-0x000000006FF6C000-memory.dmp

          Filesize

          304KB

        • memory/3372-72-0x0000000007CC0000-0x0000000007CCA000-memory.dmp

          Filesize

          40KB

        • memory/3372-22-0x00000000061E0000-0x0000000006246000-memory.dmp

          Filesize

          408KB

        • memory/3372-21-0x0000000006170000-0x00000000061D6000-memory.dmp

          Filesize

          408KB

        • memory/3372-20-0x0000000005A50000-0x0000000005A72000-memory.dmp

          Filesize

          136KB

        • memory/3372-24-0x00000000749B0000-0x0000000075160000-memory.dmp

          Filesize

          7.7MB

        • memory/3372-16-0x00000000749B0000-0x0000000075160000-memory.dmp

          Filesize

          7.7MB

        • memory/3372-34-0x00000000062F0000-0x0000000006644000-memory.dmp

          Filesize

          3.3MB

        • memory/3372-17-0x0000000005AD0000-0x00000000060F8000-memory.dmp

          Filesize

          6.2MB

        • memory/3372-15-0x0000000005370000-0x00000000053A6000-memory.dmp

          Filesize

          216KB

        • memory/3372-95-0x00000000749B0000-0x0000000075160000-memory.dmp

          Filesize

          7.7MB

        • memory/3372-88-0x0000000007F70000-0x0000000007F78000-memory.dmp

          Filesize

          32KB

        • memory/3372-48-0x0000000006920000-0x000000000693E000-memory.dmp

          Filesize

          120KB

        • memory/3372-50-0x0000000006E60000-0x0000000006EAC000-memory.dmp

          Filesize

          304KB

        • memory/3372-87-0x0000000007F90000-0x0000000007FAA000-memory.dmp

          Filesize

          104KB

        • memory/3372-63-0x0000000006F00000-0x0000000006F1E000-memory.dmp

          Filesize

          120KB

        • memory/3372-86-0x0000000007E90000-0x0000000007EA4000-memory.dmp

          Filesize

          80KB

        • memory/3372-52-0x00000000078D0000-0x0000000007902000-memory.dmp

          Filesize

          200KB

        • memory/3372-64-0x0000000007910000-0x00000000079B3000-memory.dmp

          Filesize

          652KB

        • memory/3372-84-0x0000000007E50000-0x0000000007E61000-memory.dmp

          Filesize

          68KB

        • memory/3372-71-0x0000000007C50000-0x0000000007C6A000-memory.dmp

          Filesize

          104KB

        • memory/3372-83-0x0000000007ED0000-0x0000000007F66000-memory.dmp

          Filesize

          600KB

        • memory/3372-69-0x0000000008290000-0x000000000890A000-memory.dmp

          Filesize

          6.5MB

        • memory/3372-18-0x00000000749B0000-0x0000000075160000-memory.dmp

          Filesize

          7.7MB

        • memory/4080-6-0x0000000007540000-0x0000000007558000-memory.dmp

          Filesize

          96KB

        • memory/4080-7-0x00000000749BE000-0x00000000749BF000-memory.dmp

          Filesize

          4KB

        • memory/4080-8-0x00000000749B0000-0x0000000075160000-memory.dmp

          Filesize

          7.7MB

        • memory/4080-5-0x0000000004A10000-0x0000000004A1A000-memory.dmp

          Filesize

          40KB

        • memory/4080-0-0x00000000749BE000-0x00000000749BF000-memory.dmp

          Filesize

          4KB

        • memory/4080-9-0x00000000061B0000-0x0000000006518000-memory.dmp

          Filesize

          3.4MB

        • memory/4080-49-0x00000000749B0000-0x0000000075160000-memory.dmp

          Filesize

          7.7MB

        • memory/4080-4-0x00000000749B0000-0x0000000075160000-memory.dmp

          Filesize

          7.7MB

        • memory/4080-10-0x0000000006A50000-0x0000000006AEC000-memory.dmp

          Filesize

          624KB

        • memory/4080-3-0x00000000074A0000-0x0000000007532000-memory.dmp

          Filesize

          584KB

        • memory/4080-2-0x00000000079B0000-0x0000000007F54000-memory.dmp

          Filesize

          5.6MB

        • memory/4080-1-0x00000000002E0000-0x000000000068C000-memory.dmp

          Filesize

          3.7MB

        • memory/4280-145-0x0000000006D40000-0x0000000006DF2000-memory.dmp

          Filesize

          712KB

        • memory/4280-143-0x0000000006FA0000-0x00000000075B8000-memory.dmp

          Filesize

          6.1MB

        • memory/4280-144-0x0000000006AD0000-0x0000000006B20000-memory.dmp

          Filesize

          320KB

        • memory/4280-153-0x0000000006F80000-0x0000000006F92000-memory.dmp

          Filesize

          72KB

        • memory/4280-154-0x0000000008100000-0x000000000813C000-memory.dmp

          Filesize

          240KB

        • memory/4720-122-0x0000000075240000-0x000000007528C000-memory.dmp

          Filesize

          304KB

        • memory/4720-132-0x00000000078A0000-0x0000000007943000-memory.dmp

          Filesize

          652KB

        • memory/4720-121-0x0000000006700000-0x000000000674C000-memory.dmp

          Filesize

          304KB

        • memory/4720-146-0x0000000007C00000-0x0000000007C11000-memory.dmp

          Filesize

          68KB

        • memory/4720-147-0x0000000007C30000-0x0000000007C44000-memory.dmp

          Filesize

          80KB

        • memory/4768-133-0x0000000075240000-0x000000007528C000-memory.dmp

          Filesize

          304KB

        • memory/4768-110-0x0000000005BB0000-0x0000000005F04000-memory.dmp

          Filesize

          3.3MB