Analysis

  • max time kernel
    138s
  • max time network
    148s
  • 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 13:06

General

  • Target

    Nowezamwienie-0072291855.pdf243KB.com.exe

  • Size

    3.7MB

  • MD5

    96493f8a0252e4e492de924d83db5a8a

  • SHA1

    09dad264469e86a858f0183ed6e5bfe2d53781f4

  • SHA256

    e14c8cd3613b5d94cd5ca407fd329b61954add690c779edbd41b362d035f7879

  • SHA512

    29d6192b4aae0af83fe15d015be5cf3e1b8832e154c6e847d71de1834c30421f435192490fc9f5b868c99e71f2bbdb92685582985ece2e7694d02799cd315b78

  • SSDEEP

    49152:wBeT66BYzsKDeAo4hJFXMOqlI9XGhvPEpCaZKfpObuLkEnmnK0QnFRhe5+ET8QVY:TTF7GbIlDvPEpz4ptnHhK87nhUnIJb

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

JEKWU

C2

Zyg.ydns.eu:5829

Opy.ydns.eu:5829

Mutex

9c58b2ba-07eb-415a-b48b-21bbb68d32285e

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 3 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\Nowezamwienie-0072291855.pdf243KB.com.exe
    "C:\Users\Admin\AppData\Local\Temp\Nowezamwienie-0072291855.pdf243KB.com.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1156
    • 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\Nowezamwienie-0072291855.pdf243KB.com.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1092
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\EPhabVgXw.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4800
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\EPhabVgXw" /XML "C:\Users\Admin\AppData\Local\Temp\tmpBAB5.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:2516
    • C:\Users\Admin\AppData\Local\Temp\Nowezamwienie-0072291855.pdf243KB.com.exe
      "C:\Users\Admin\AppData\Local\Temp\Nowezamwienie-0072291855.pdf243KB.com.exe"
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:376
      • 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:2144
      • 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 behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:1508
        • 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:4572
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\EPhabVgXw.exe"
          4⤵
          • Command and Scripting Interpreter: PowerShell
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:4000
        • C:\Windows\SysWOW64\schtasks.exe
          "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\EPhabVgXw" /XML "C:\Users\Admin\AppData\Local\Temp\tmp5E7.tmp"
          4⤵
          • System Location Discovery: System Language Discovery
          • Scheduled Task/Job: Scheduled Task
          PID:1468
        • C:\Users\Admin\AppData\Roaming\WindowsUpdates\outlooks.exe
          "C:\Users\Admin\AppData\Roaming\WindowsUpdates\outlooks.exe"
          4⤵
          • Executes dropped EXE
          PID:5012
        • 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:4936
          • 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:3048

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\Nowezamwienie-0072291855.pdf243KB.com.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

    298282601fd25e34effef4fe49633d57

    SHA1

    cd0aa469b91aaba104702545730a2d3ed39bbbe8

    SHA256

    26106832b5604678c62809fdb7761800c0f96966338ff42d5b1372de5e2c2020

    SHA512

    52d3f195bd82f3115e435bc8a5de8bb2e78e7590d649957f75c08a1e3d507ef6581d1f095446292a2e3336d3aa4c35ecaa035fdeb563f5b7e4a36e83519903f5

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

    Filesize

    18KB

    MD5

    467655bf0f3490e70a5c7ceece5c9c7f

    SHA1

    7440a53d23e9dec407621bdeb019cdf2810712f4

    SHA256

    089d3debc6743b25a6f555dd9c8e2ebe3d5fe74fb370e12af5b27dd12cef8989

    SHA512

    968cce03ae6b81488c0ef1dd4184ad9557d3367ecb5c8d316bcafefc1e2f7f17794678c401515e0f7e711cd292374b6d953a463b2b1a9aba8b00c59aa49afd13

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_t53ao4p4.aip.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\AppData\Local\Temp\tmpBAB5.tmp

    Filesize

    1KB

    MD5

    ec1af89190aedcadbcff2e0d8162b0c9

    SHA1

    f4ef9711ee340b4b84ba9d0a2fa12121496a6e93

    SHA256

    8c1497f0235fd32162ca5030e0c19b50c9016ed3f8fc4d0228aaafda5d37ad1a

    SHA512

    2efd19fa7bb87f0642e5cb9d042fc860d7a8f42214f82891cbd365c27d2c96b33c7efd61fafcafe2d77bee09df6616fa5cd07aa5d10fcdeedf08fc1ed01d0b56

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

    Filesize

    3.7MB

    MD5

    96493f8a0252e4e492de924d83db5a8a

    SHA1

    09dad264469e86a858f0183ed6e5bfe2d53781f4

    SHA256

    e14c8cd3613b5d94cd5ca407fd329b61954add690c779edbd41b362d035f7879

    SHA512

    29d6192b4aae0af83fe15d015be5cf3e1b8832e154c6e847d71de1834c30421f435192490fc9f5b868c99e71f2bbdb92685582985ece2e7694d02799cd315b78

  • memory/376-27-0x0000000000400000-0x0000000000724000-memory.dmp

    Filesize

    3.1MB

  • memory/1092-49-0x0000000006680000-0x000000000669E000-memory.dmp

    Filesize

    120KB

  • memory/1092-69-0x00000000078A0000-0x0000000007943000-memory.dmp

    Filesize

    652KB

  • memory/1092-94-0x00000000747A0000-0x0000000074F50000-memory.dmp

    Filesize

    7.7MB

  • memory/1092-15-0x0000000002DA0000-0x0000000002DD6000-memory.dmp

    Filesize

    216KB

  • memory/1092-16-0x00000000747A0000-0x0000000074F50000-memory.dmp

    Filesize

    7.7MB

  • memory/1092-17-0x0000000005790000-0x0000000005DB8000-memory.dmp

    Filesize

    6.2MB

  • memory/1092-18-0x00000000747A0000-0x0000000074F50000-memory.dmp

    Filesize

    7.7MB

  • memory/1092-88-0x0000000007CC0000-0x0000000007CC8000-memory.dmp

    Filesize

    32KB

  • memory/1092-86-0x0000000007BE0000-0x0000000007BF4000-memory.dmp

    Filesize

    80KB

  • memory/1092-84-0x0000000007BA0000-0x0000000007BB1000-memory.dmp

    Filesize

    68KB

  • memory/1092-22-0x00000000747A0000-0x0000000074F50000-memory.dmp

    Filesize

    7.7MB

  • memory/1092-83-0x0000000007C20000-0x0000000007CB6000-memory.dmp

    Filesize

    600KB

  • memory/1092-25-0x0000000005EA0000-0x0000000005F06000-memory.dmp

    Filesize

    408KB

  • memory/1092-24-0x0000000005DC0000-0x0000000005E26000-memory.dmp

    Filesize

    408KB

  • memory/1092-29-0x0000000006080000-0x00000000063D4000-memory.dmp

    Filesize

    3.3MB

  • memory/1092-82-0x0000000007A10000-0x0000000007A1A000-memory.dmp

    Filesize

    40KB

  • memory/1092-80-0x0000000007FF0000-0x000000000866A000-memory.dmp

    Filesize

    6.5MB

  • memory/1092-81-0x00000000079A0000-0x00000000079BA000-memory.dmp

    Filesize

    104KB

  • memory/1092-23-0x00000000056C0000-0x00000000056E2000-memory.dmp

    Filesize

    136KB

  • memory/1092-57-0x0000000007660000-0x0000000007692000-memory.dmp

    Filesize

    200KB

  • memory/1092-50-0x0000000006C20000-0x0000000006C6C000-memory.dmp

    Filesize

    304KB

  • memory/1092-68-0x0000000006BA0000-0x0000000006BBE000-memory.dmp

    Filesize

    120KB

  • memory/1092-58-0x0000000075030000-0x000000007507C000-memory.dmp

    Filesize

    304KB

  • memory/1156-3-0x00000000081E0000-0x0000000008272000-memory.dmp

    Filesize

    584KB

  • memory/1156-10-0x0000000007320000-0x00000000073BC000-memory.dmp

    Filesize

    624KB

  • memory/1156-9-0x0000000006EF0000-0x0000000007258000-memory.dmp

    Filesize

    3.4MB

  • memory/1156-0-0x00000000747AE000-0x00000000747AF000-memory.dmp

    Filesize

    4KB

  • memory/1156-6-0x00000000081C0000-0x00000000081D8000-memory.dmp

    Filesize

    96KB

  • memory/1156-39-0x00000000747A0000-0x0000000074F50000-memory.dmp

    Filesize

    7.7MB

  • memory/1156-7-0x00000000747AE000-0x00000000747AF000-memory.dmp

    Filesize

    4KB

  • memory/1156-4-0x0000000003550000-0x000000000355A000-memory.dmp

    Filesize

    40KB

  • memory/1156-8-0x00000000747A0000-0x0000000074F50000-memory.dmp

    Filesize

    7.7MB

  • memory/1156-5-0x00000000747A0000-0x0000000074F50000-memory.dmp

    Filesize

    7.7MB

  • memory/1156-2-0x00000000086F0000-0x0000000008C94000-memory.dmp

    Filesize

    5.6MB

  • memory/1156-1-0x0000000000FE0000-0x000000000138C000-memory.dmp

    Filesize

    3.7MB

  • memory/4000-134-0x0000000070F00000-0x0000000070F4C000-memory.dmp

    Filesize

    304KB

  • memory/4572-123-0x0000000005C50000-0x0000000005C9C000-memory.dmp

    Filesize

    304KB

  • memory/4572-115-0x00000000056A0000-0x00000000059F4000-memory.dmp

    Filesize

    3.3MB

  • memory/4572-148-0x0000000007190000-0x00000000071A4000-memory.dmp

    Filesize

    80KB

  • memory/4572-144-0x0000000006E10000-0x0000000006EB3000-memory.dmp

    Filesize

    652KB

  • memory/4572-124-0x0000000070F00000-0x0000000070F4C000-memory.dmp

    Filesize

    304KB

  • memory/4800-70-0x0000000075030000-0x000000007507C000-memory.dmp

    Filesize

    304KB

  • memory/4800-26-0x00000000747A0000-0x0000000074F50000-memory.dmp

    Filesize

    7.7MB

  • memory/4800-85-0x0000000007090000-0x000000000709E000-memory.dmp

    Filesize

    56KB

  • memory/4800-20-0x00000000747A0000-0x0000000074F50000-memory.dmp

    Filesize

    7.7MB

  • memory/4800-19-0x00000000747A0000-0x0000000074F50000-memory.dmp

    Filesize

    7.7MB

  • memory/4800-95-0x00000000747A0000-0x0000000074F50000-memory.dmp

    Filesize

    7.7MB

  • memory/4800-87-0x00000000071A0000-0x00000000071BA000-memory.dmp

    Filesize

    104KB

  • memory/4936-147-0x0000000006AD0000-0x0000000006B82000-memory.dmp

    Filesize

    712KB

  • memory/4936-145-0x0000000006CD0000-0x00000000072E8000-memory.dmp

    Filesize

    6.1MB

  • memory/4936-146-0x0000000006860000-0x00000000068B0000-memory.dmp

    Filesize

    320KB