Analysis

  • max time kernel
    137s
  • max time network
    145s
  • 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 13:00

General

  • Target

    Nowe zamówienie - 0072291855.pdf (243KB).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 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 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 43 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Nowe zamówienie - 0072291855.pdf (243KB).com.exe
    "C:\Users\Admin\AppData\Local\Temp\Nowe zamówienie - 0072291855.pdf (243KB).com.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3756
    • 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\Nowe zamówienie - 0072291855.pdf (243KB).com.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2912
    • 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:5040
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\EPhabVgXw" /XML "C:\Users\Admin\AppData\Local\Temp\tmpD1B7.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:3016
    • C:\Users\Admin\AppData\Local\Temp\Nowe zamówienie - 0072291855.pdf (243KB).com.exe
      "C:\Users\Admin\AppData\Local\Temp\Nowe zamówienie - 0072291855.pdf (243KB).com.exe"
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1420
      • 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:1716
      • 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:4084
        • 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:2640
        • 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:1816
        • C:\Windows\SysWOW64\schtasks.exe
          "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\EPhabVgXw" /XML "C:\Users\Admin\AppData\Local\Temp\tmp1C7C.tmp"
          4⤵
          • System Location Discovery: System Language Discovery
          • Scheduled Task/Job: Scheduled Task
          PID:4776
        • 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:2336
          • 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:5008

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\Nowe zamówienie - 0072291855.pdf (243KB).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

    6429d3b0ae9ec3a813f7804c89e385c4

    SHA1

    6ac0d8b790567bf50f49612b56f729d303497bc0

    SHA256

    d5af2c7d25b3a0a45206863a6c60db52c4cef7d6ace72998f5d288608f5b05e8

    SHA512

    4cf4c2fa69969f87fbdb347e607bd6aca875c0351e34d8ea3c8e511544e0d06754aab97d30b4acb38c4630be71b1d619a91602bf706d9f671dcfdb325299ff7c

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

    Filesize

    18KB

    MD5

    3a2c137e4118a89ae3d3f329c2826b97

    SHA1

    a750f70291685e240c33528d7bea2cf86bc0e928

    SHA256

    bbd26fcf7ca88b0f797e9a3c7aa63c617e2787ff3c244a2992ace820cd5c65ad

    SHA512

    10cf00064c383360ca0a921a8599b0b808b5446754c4c520a61e0378aa8705596533262383168eb1c0f292f1637607a41cde29ad8e70e4d93400947eb422b4a8

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_a5ir22mc.4y0.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\AppData\Local\Temp\tmpD1B7.tmp

    Filesize

    1KB

    MD5

    61abbdb4798057ef008023d1bfc7c6d8

    SHA1

    c693d974222431bb1fbdfb47495d2e35e8d929c2

    SHA256

    6146e80b5a8bdac2c50526bf1766a535eda6124ce544c6e84800823e7aa76f17

    SHA512

    fc453dbe59395dfe6d6c29a4c48bb900996eba8670ef0ab1aeb42d0075418a370efac2440921b4a4f34766cae1ada4d3f0edf733ce328cca16d2b91483932d17

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

    Filesize

    3.7MB

    MD5

    96493f8a0252e4e492de924d83db5a8a

    SHA1

    09dad264469e86a858f0183ed6e5bfe2d53781f4

    SHA256

    e14c8cd3613b5d94cd5ca407fd329b61954add690c779edbd41b362d035f7879

    SHA512

    29d6192b4aae0af83fe15d015be5cf3e1b8832e154c6e847d71de1834c30421f435192490fc9f5b868c99e71f2bbdb92685582985ece2e7694d02799cd315b78

  • memory/1420-28-0x0000000000400000-0x0000000000724000-memory.dmp

    Filesize

    3.1MB

  • memory/1816-135-0x0000000071650000-0x000000007169C000-memory.dmp

    Filesize

    304KB

  • memory/2336-133-0x0000000006890000-0x0000000006EA8000-memory.dmp

    Filesize

    6.1MB

  • memory/2336-136-0x0000000006680000-0x0000000006732000-memory.dmp

    Filesize

    712KB

  • memory/2336-134-0x0000000006410000-0x0000000006460000-memory.dmp

    Filesize

    320KB

  • memory/2640-132-0x0000000006E40000-0x0000000006EE3000-memory.dmp

    Filesize

    652KB

  • memory/2640-146-0x0000000007170000-0x0000000007184000-memory.dmp

    Filesize

    80KB

  • memory/2640-98-0x0000000005530000-0x0000000005884000-memory.dmp

    Filesize

    3.3MB

  • memory/2640-121-0x00000000061C0000-0x000000000620C000-memory.dmp

    Filesize

    304KB

  • memory/2640-122-0x0000000071650000-0x000000007169C000-memory.dmp

    Filesize

    304KB

  • memory/2912-72-0x0000000075780000-0x00000000757CC000-memory.dmp

    Filesize

    304KB

  • memory/2912-25-0x0000000074EF0000-0x00000000756A0000-memory.dmp

    Filesize

    7.7MB

  • memory/2912-24-0x0000000006250000-0x00000000062B6000-memory.dmp

    Filesize

    408KB

  • memory/2912-23-0x00000000059A0000-0x0000000005A06000-memory.dmp

    Filesize

    408KB

  • memory/2912-19-0x0000000074EF0000-0x00000000756A0000-memory.dmp

    Filesize

    7.7MB

  • memory/2912-26-0x00000000062C0000-0x0000000006614000-memory.dmp

    Filesize

    3.3MB

  • memory/2912-22-0x0000000005880000-0x00000000058A2000-memory.dmp

    Filesize

    136KB

  • memory/2912-15-0x0000000002F40000-0x0000000002F76000-memory.dmp

    Filesize

    216KB

  • memory/2912-16-0x0000000005B20000-0x0000000006148000-memory.dmp

    Filesize

    6.2MB

  • memory/2912-91-0x0000000074EF0000-0x00000000756A0000-memory.dmp

    Filesize

    7.7MB

  • memory/2912-17-0x0000000074EF0000-0x00000000756A0000-memory.dmp

    Filesize

    7.7MB

  • memory/3756-0-0x0000000074EFE000-0x0000000074EFF000-memory.dmp

    Filesize

    4KB

  • memory/3756-1-0x0000000000910000-0x0000000000CBC000-memory.dmp

    Filesize

    3.7MB

  • memory/3756-5-0x0000000005110000-0x000000000511A000-memory.dmp

    Filesize

    40KB

  • memory/3756-10-0x000000000CF50000-0x000000000CFEC000-memory.dmp

    Filesize

    624KB

  • memory/3756-8-0x0000000074EF0000-0x00000000756A0000-memory.dmp

    Filesize

    7.7MB

  • memory/3756-4-0x0000000074EF0000-0x00000000756A0000-memory.dmp

    Filesize

    7.7MB

  • memory/3756-6-0x0000000007E90000-0x0000000007EA8000-memory.dmp

    Filesize

    96KB

  • memory/3756-3-0x0000000007B50000-0x0000000007BE2000-memory.dmp

    Filesize

    584KB

  • memory/3756-9-0x00000000096B0000-0x0000000009A18000-memory.dmp

    Filesize

    3.4MB

  • memory/3756-7-0x0000000074EFE000-0x0000000074EFF000-memory.dmp

    Filesize

    4KB

  • memory/3756-2-0x0000000008020000-0x00000000085C4000-memory.dmp

    Filesize

    5.6MB

  • memory/3756-30-0x0000000074EF0000-0x00000000756A0000-memory.dmp

    Filesize

    7.7MB

  • memory/5040-50-0x00000000063F0000-0x000000000643C000-memory.dmp

    Filesize

    304KB

  • memory/5040-85-0x0000000007860000-0x000000000786E000-memory.dmp

    Filesize

    56KB

  • memory/5040-86-0x0000000007870000-0x0000000007884000-memory.dmp

    Filesize

    80KB

  • memory/5040-87-0x0000000007970000-0x000000000798A000-memory.dmp

    Filesize

    104KB

  • memory/5040-88-0x0000000007950000-0x0000000007958000-memory.dmp

    Filesize

    32KB

  • memory/5040-84-0x0000000007830000-0x0000000007841000-memory.dmp

    Filesize

    68KB

  • memory/5040-83-0x00000000078B0000-0x0000000007946000-memory.dmp

    Filesize

    600KB

  • memory/5040-82-0x00000000076B0000-0x00000000076BA000-memory.dmp

    Filesize

    40KB

  • memory/5040-95-0x0000000074EF0000-0x00000000756A0000-memory.dmp

    Filesize

    7.7MB

  • memory/5040-68-0x0000000007630000-0x000000000764A000-memory.dmp

    Filesize

    104KB

  • memory/5040-67-0x0000000007C80000-0x00000000082FA000-memory.dmp

    Filesize

    6.5MB

  • memory/5040-64-0x00000000074E0000-0x0000000007583000-memory.dmp

    Filesize

    652KB

  • memory/5040-52-0x00000000068E0000-0x0000000006912000-memory.dmp

    Filesize

    200KB

  • memory/5040-63-0x00000000068C0000-0x00000000068DE000-memory.dmp

    Filesize

    120KB

  • memory/5040-53-0x0000000075780000-0x00000000757CC000-memory.dmp

    Filesize

    304KB

  • memory/5040-49-0x0000000006310000-0x000000000632E000-memory.dmp

    Filesize

    120KB

  • memory/5040-27-0x0000000074EF0000-0x00000000756A0000-memory.dmp

    Filesize

    7.7MB

  • memory/5040-21-0x0000000074EF0000-0x00000000756A0000-memory.dmp

    Filesize

    7.7MB

  • memory/5040-20-0x0000000074EF0000-0x00000000756A0000-memory.dmp

    Filesize

    7.7MB