Analysis

  • max time kernel
    139s
  • 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
    04-12-2024 03:28

General

  • Target

    e14c8cd3613b5d94cd5ca407fd329b61954add690c779edbd41b362d035f7879.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 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 12 IoCs
  • Suspicious use of AdjustPrivilegeToken 7 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 49 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\e14c8cd3613b5d94cd5ca407fd329b61954add690c779edbd41b362d035f7879.exe
    "C:\Users\Admin\AppData\Local\Temp\e14c8cd3613b5d94cd5ca407fd329b61954add690c779edbd41b362d035f7879.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:2256
    • 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\e14c8cd3613b5d94cd5ca407fd329b61954add690c779edbd41b362d035f7879.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3716
    • 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:2176
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\EPhabVgXw" /XML "C:\Users\Admin\AppData\Local\Temp\tmpD8AD.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:3432
    • C:\Users\Admin\AppData\Local\Temp\e14c8cd3613b5d94cd5ca407fd329b61954add690c779edbd41b362d035f7879.exe
      "C:\Users\Admin\AppData\Local\Temp\e14c8cd3613b5d94cd5ca407fd329b61954add690c779edbd41b362d035f7879.exe"
      2⤵
        PID:1584
      • C:\Users\Admin\AppData\Local\Temp\e14c8cd3613b5d94cd5ca407fd329b61954add690c779edbd41b362d035f7879.exe
        "C:\Users\Admin\AppData\Local\Temp\e14c8cd3613b5d94cd5ca407fd329b61954add690c779edbd41b362d035f7879.exe"
        2⤵
          PID:4632
        • C:\Users\Admin\AppData\Local\Temp\e14c8cd3613b5d94cd5ca407fd329b61954add690c779edbd41b362d035f7879.exe
          "C:\Users\Admin\AppData\Local\Temp\e14c8cd3613b5d94cd5ca407fd329b61954add690c779edbd41b362d035f7879.exe"
          2⤵
          • System Location Discovery: System Language Discovery
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:3144
          • 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:4124
          • 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:4324
            • 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:5020
            • 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:3956
            • C:\Windows\SysWOW64\schtasks.exe
              "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\EPhabVgXw" /XML "C:\Users\Admin\AppData\Local\Temp\tmp2C2C.tmp"
              4⤵
              • System Location Discovery: System Language Discovery
              • Scheduled Task/Job: Scheduled Task
              PID:3652
            • 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:4964
              • 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:3192

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

      • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\e14c8cd3613b5d94cd5ca407fd329b61954add690c779edbd41b362d035f7879.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

        MD5

        d41d8cd98f00b204e9800998ecf8427e

        SHA1

        da39a3ee5e6b4b0d3255bfef95601890afd80709

        SHA256

        e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

        SHA512

        cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

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

        Filesize

        18KB

        MD5

        95f089cf3921fa2bef7477dfcdf928f8

        SHA1

        d602326d800c15edfab19b325724a1a266edaf2c

        SHA256

        a569406b26f7f06495f847cf338c4e4b4951681a095a1790681ea903f365eeb9

        SHA512

        5325543cbe055e7512c91a1cb89b6dbd88a8cc42b2e7c1bb0dcd223e6d034e15c77d85b6e316a560fa57c368b46ac54c064f58e7186aadb62fbbd6d645d07cf4

      • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_tgyum3dn.qgm.ps1

        Filesize

        60B

        MD5

        d17fe0a3f47be24a6453e9ef58c94641

        SHA1

        6ab83620379fc69f80c0242105ddffd7d98d5d9d

        SHA256

        96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

        SHA512

        5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

      • C:\Users\Admin\AppData\Local\Temp\tmpD8AD.tmp

        Filesize

        1KB

        MD5

        cbf1eeddbeec76ffe36e6923b55268c7

        SHA1

        5ec8f1aa05a304c1ee92ea86c11069c01936808b

        SHA256

        091042ad1f4894e5fe51a7636f03bb2582bf26d1e28fe00e1b1595cfe3809071

        SHA512

        6c90140c5998d6cb38b132f05c10d531a04c7df8d33917dedec02895e279aa0e7e5ef97d2e95ad07a2a80ee2982f61839f5de2931aa719343580c0b7250e0b27

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

        Filesize

        3.7MB

        MD5

        96493f8a0252e4e492de924d83db5a8a

        SHA1

        09dad264469e86a858f0183ed6e5bfe2d53781f4

        SHA256

        e14c8cd3613b5d94cd5ca407fd329b61954add690c779edbd41b362d035f7879

        SHA512

        29d6192b4aae0af83fe15d015be5cf3e1b8832e154c6e847d71de1834c30421f435192490fc9f5b868c99e71f2bbdb92685582985ece2e7694d02799cd315b78

      • memory/2176-88-0x00000000075A0000-0x00000000075A8000-memory.dmp

        Filesize

        32KB

      • memory/2176-25-0x0000000074610000-0x0000000074DC0000-memory.dmp

        Filesize

        7.7MB

      • memory/2176-95-0x0000000074610000-0x0000000074DC0000-memory.dmp

        Filesize

        7.7MB

      • memory/2176-85-0x00000000074B0000-0x00000000074BE000-memory.dmp

        Filesize

        56KB

      • memory/2176-77-0x0000000007300000-0x000000000730A000-memory.dmp

        Filesize

        40KB

      • memory/2176-65-0x00000000078D0000-0x0000000007F4A000-memory.dmp

        Filesize

        6.5MB

      • memory/2176-66-0x0000000007280000-0x000000000729A000-memory.dmp

        Filesize

        104KB

      • memory/2176-51-0x0000000006F10000-0x0000000006F42000-memory.dmp

        Filesize

        200KB

      • memory/2176-52-0x000000006FB60000-0x000000006FBAC000-memory.dmp

        Filesize

        304KB

      • memory/2176-20-0x0000000074610000-0x0000000074DC0000-memory.dmp

        Filesize

        7.7MB

      • memory/2176-64-0x0000000006F50000-0x0000000006FF3000-memory.dmp

        Filesize

        652KB

      • memory/2176-63-0x0000000006ED0000-0x0000000006EEE000-memory.dmp

        Filesize

        120KB

      • memory/2176-36-0x0000000074610000-0x0000000074DC0000-memory.dmp

        Filesize

        7.7MB

      • memory/2256-6-0x0000000007E70000-0x0000000007E88000-memory.dmp

        Filesize

        96KB

      • memory/2256-9-0x0000000009540000-0x00000000098A8000-memory.dmp

        Filesize

        3.4MB

      • memory/2256-1-0x0000000000A90000-0x0000000000E3C000-memory.dmp

        Filesize

        3.7MB

      • memory/2256-8-0x0000000074610000-0x0000000074DC0000-memory.dmp

        Filesize

        7.7MB

      • memory/2256-2-0x0000000008220000-0x00000000087C4000-memory.dmp

        Filesize

        5.6MB

      • memory/2256-3-0x0000000007D10000-0x0000000007DA2000-memory.dmp

        Filesize

        584KB

      • memory/2256-0-0x000000007461E000-0x000000007461F000-memory.dmp

        Filesize

        4KB

      • memory/2256-10-0x000000000CD40000-0x000000000CDDC000-memory.dmp

        Filesize

        624KB

      • memory/2256-50-0x0000000074610000-0x0000000074DC0000-memory.dmp

        Filesize

        7.7MB

      • memory/2256-7-0x000000007461E000-0x000000007461F000-memory.dmp

        Filesize

        4KB

      • memory/2256-4-0x0000000074610000-0x0000000074DC0000-memory.dmp

        Filesize

        7.7MB

      • memory/2256-5-0x0000000005290000-0x000000000529A000-memory.dmp

        Filesize

        40KB

      • memory/3144-48-0x0000000000400000-0x0000000000724000-memory.dmp

        Filesize

        3.1MB

      • memory/3716-47-0x0000000005B50000-0x0000000005B9C000-memory.dmp

        Filesize

        304KB

      • memory/3716-35-0x0000000005500000-0x0000000005854000-memory.dmp

        Filesize

        3.3MB

      • memory/3716-91-0x0000000074610000-0x0000000074DC0000-memory.dmp

        Filesize

        7.7MB

      • memory/3716-15-0x0000000004520000-0x0000000004556000-memory.dmp

        Filesize

        216KB

      • memory/3716-19-0x0000000074610000-0x0000000074DC0000-memory.dmp

        Filesize

        7.7MB

      • memory/3716-79-0x0000000007050000-0x00000000070E6000-memory.dmp

        Filesize

        600KB

      • memory/3716-21-0x0000000005310000-0x0000000005332000-memory.dmp

        Filesize

        136KB

      • memory/3716-84-0x0000000006FD0000-0x0000000006FE1000-memory.dmp

        Filesize

        68KB

      • memory/3716-18-0x0000000074610000-0x0000000074DC0000-memory.dmp

        Filesize

        7.7MB

      • memory/3716-86-0x0000000007010000-0x0000000007024000-memory.dmp

        Filesize

        80KB

      • memory/3716-87-0x0000000007110000-0x000000000712A000-memory.dmp

        Filesize

        104KB

      • memory/3716-46-0x0000000005AA0000-0x0000000005ABE000-memory.dmp

        Filesize

        120KB

      • memory/3716-67-0x000000006FB60000-0x000000006FBAC000-memory.dmp

        Filesize

        304KB

      • memory/3716-16-0x0000000074610000-0x0000000074DC0000-memory.dmp

        Filesize

        7.7MB

      • memory/3716-17-0x0000000004B90000-0x00000000051B8000-memory.dmp

        Filesize

        6.2MB

      • memory/3716-23-0x0000000005490000-0x00000000054F6000-memory.dmp

        Filesize

        408KB

      • memory/3716-22-0x00000000053B0000-0x0000000005416000-memory.dmp

        Filesize

        408KB

      • memory/3956-143-0x0000000007340000-0x00000000073E3000-memory.dmp

        Filesize

        652KB

      • memory/3956-123-0x0000000074EA0000-0x0000000074EEC000-memory.dmp

        Filesize

        304KB

      • memory/3956-147-0x0000000007690000-0x00000000076A1000-memory.dmp

        Filesize

        68KB

      • memory/3956-148-0x00000000076D0000-0x00000000076E4000-memory.dmp

        Filesize

        80KB

      • memory/4964-145-0x0000000006470000-0x00000000064C0000-memory.dmp

        Filesize

        320KB

      • memory/4964-146-0x00000000066E0000-0x0000000006792000-memory.dmp

        Filesize

        712KB

      • memory/4964-144-0x0000000006950000-0x0000000006F68000-memory.dmp

        Filesize

        6.1MB

      • memory/5020-122-0x0000000006D50000-0x0000000006D9C000-memory.dmp

        Filesize

        304KB

      • memory/5020-133-0x0000000074EA0000-0x0000000074EEC000-memory.dmp

        Filesize

        304KB

      • memory/5020-98-0x0000000006130000-0x0000000006484000-memory.dmp

        Filesize

        3.3MB