Analysis

  • max time kernel
    92s
  • max time network
    139s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240730-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240730-enlocale:en-usos:windows10-2004-x64system
  • submitted
    01-08-2024 11:00

General

  • Target

    PO 39567812_PDF Siemens Ltd. India iGST_eH2mYaM.exe

  • Size

    663KB

  • MD5

    7b05be5398ce2cbc424d40b82b8bb4fe

  • SHA1

    6c158dc6c7324e5b76bb9d89916261c778c23f63

  • SHA256

    472819b55a8804b4d8787f5e45cc9b1aeb1026d5819f06e91bbc022d53ccae5c

  • SHA512

    ddb856adf6ddf8d8f696b48a1b5d27584be742bc9f47e4bf07b0dca101be9afa598a087d7bc8e5dc9c0d515d0e7333093ef4c597bd8d3197a2e340caf9da8257

  • SSDEEP

    12288:fU3929BC4rqhpqBHIA01a29EprIHAJp3UadAAHkR:fU89BNuhaoEprIHAJpkoAr

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

Default

C2

5.252.165.55:1986

Mutex

AsyncMutex_5SI8OkPnk

Attributes
  • delay

    3

  • install

    true

  • install_file

    Notes.exe

  • install_folder

    %AppData%

aes.plain

Signatures

  • AsyncRat

    AsyncRAT is designed to remotely monitor and control other computers written in C#.

  • 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 3 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 14 IoCs

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

  • Delays execution with timeout.exe 1 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 3 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 31 IoCs
  • Suspicious use of AdjustPrivilegeToken 7 IoCs
  • Suspicious use of WriteProcessMemory 52 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\PO 39567812_PDF Siemens Ltd. India iGST_eH2mYaM.exe
    "C:\Users\Admin\AppData\Local\Temp\PO 39567812_PDF Siemens Ltd. India iGST_eH2mYaM.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3924
    • 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\PO 39567812_PDF Siemens Ltd. India iGST_eH2mYaM.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1940
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\ZjHuIvPfp.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4008
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\ZjHuIvPfp" /XML "C:\Users\Admin\AppData\Local\Temp\tmpE530.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:4204
    • C:\Users\Admin\AppData\Local\Temp\PO 39567812_PDF Siemens Ltd. India iGST_eH2mYaM.exe
      "C:\Users\Admin\AppData\Local\Temp\PO 39567812_PDF Siemens Ltd. India iGST_eH2mYaM.exe"
      2⤵
      • Checks computer location settings
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:4312
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "Notes" /tr '"C:\Users\Admin\AppData\Roaming\Notes.exe"' & exit
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:4576
        • C:\Windows\SysWOW64\schtasks.exe
          schtasks /create /f /sc onlogon /rl highest /tn "Notes" /tr '"C:\Users\Admin\AppData\Roaming\Notes.exe"'
          4⤵
          • System Location Discovery: System Language Discovery
          • Scheduled Task/Job: Scheduled Task
          PID:1048
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpF6C4.tmp.bat""
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:3472
        • C:\Windows\SysWOW64\timeout.exe
          timeout 3
          4⤵
          • System Location Discovery: System Language Discovery
          • Delays execution with timeout.exe
          PID:880
        • C:\Users\Admin\AppData\Roaming\Notes.exe
          "C:\Users\Admin\AppData\Roaming\Notes.exe"
          4⤵
          • 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:4868
          • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
            "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\Notes.exe"
            5⤵
            • Command and Scripting Interpreter: PowerShell
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:2820
          • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
            "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\ZjHuIvPfp.exe"
            5⤵
            • Command and Scripting Interpreter: PowerShell
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:2440
          • C:\Windows\SysWOW64\schtasks.exe
            "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\ZjHuIvPfp" /XML "C:\Users\Admin\AppData\Local\Temp\tmp40FC.tmp"
            5⤵
            • System Location Discovery: System Language Discovery
            • Scheduled Task/Job: Scheduled Task
            PID:4132
          • C:\Users\Admin\AppData\Roaming\Notes.exe
            "C:\Users\Admin\AppData\Roaming\Notes.exe"
            5⤵
            • Executes dropped EXE
            PID:2880
          • C:\Users\Admin\AppData\Roaming\Notes.exe
            "C:\Users\Admin\AppData\Roaming\Notes.exe"
            5⤵
            • Executes dropped EXE
            • System Location Discovery: System Language Discovery
            • Suspicious use of AdjustPrivilegeToken
            PID:2528

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\PO 39567812_PDF Siemens Ltd. India iGST_eH2mYaM.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

    3d086a433708053f9bf9523e1d87a4e8

    SHA1

    b3ab5d4f282a4c8fe8c3005b8a557ed5a0e37f28

    SHA256

    6f8fd1b8d9788ad54eaeee329232187e24b7b43393a01aeba2d6e9675231fb69

    SHA512

    931ae42b4c68a4507ff2342332b08eb407050d47cf4176137ea022d0f6e513c689e998445a04c6d18d4877391705c586bfce0234632b898d41aaed0957996dfd

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

    Filesize

    18KB

    MD5

    6cfeed0c71c9bb5a775caf07cfedbac7

    SHA1

    913b7a6d1f508d983d492e2fbf6c022acf52f053

    SHA256

    01cf0f77862ab789ae4cb7380632da7199ce83e8f1649003ef564227487092b2

    SHA512

    9a4f8228c42ac38bd21cda5e3e76812810cb8a746c43b65d1366f7df014470a310bad10c27bb37e86acd8c8e91bf38f3dc8a92cc9676e4c1d405b044fbed237c

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_wtcf1dsa.ngn.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\AppData\Local\Temp\tmpE530.tmp

    Filesize

    1KB

    MD5

    4354630a56cd2b9d496f2403e0f871a6

    SHA1

    9e9b137f2e2924fe768c2192bfe6162c76e82b56

    SHA256

    a99f897f06537533c2a4e8bbf6307a967732afd5e37b9260bde997fa733fc659

    SHA512

    80698978839561cb1a1a059643462a9c3fb85a101c33765c2b20fd3ef415daee3ad3efd80f07d30e0101013ee55b8306d635159326d8d9be9af949ce923a2698

  • C:\Users\Admin\AppData\Local\Temp\tmpF6C4.tmp.bat

    Filesize

    149B

    MD5

    68b45f7b400e329d8c10667d2c1e7499

    SHA1

    35095c07acf907d8d12d657eae3ebf473e718281

    SHA256

    ebff4b7c25f8533fb9f4e4e51698490a9e842e2460125ae9f019abf8547c18fc

    SHA512

    e669e7b3e5455d66b77fe231688d4656419842a1430b1b845ea4047e7855e6073e8dd68ffb1365f03bb465e25a0005fa304c04d701af0476363b8ac04f1bb510

  • C:\Users\Admin\AppData\Roaming\Notes.exe

    Filesize

    663KB

    MD5

    7b05be5398ce2cbc424d40b82b8bb4fe

    SHA1

    6c158dc6c7324e5b76bb9d89916261c778c23f63

    SHA256

    472819b55a8804b4d8787f5e45cc9b1aeb1026d5819f06e91bbc022d53ccae5c

    SHA512

    ddb856adf6ddf8d8f696b48a1b5d27584be742bc9f47e4bf07b0dca101be9afa598a087d7bc8e5dc9c0d515d0e7333093ef4c597bd8d3197a2e340caf9da8257

  • memory/1940-86-0x0000000074CD0000-0x0000000075480000-memory.dmp

    Filesize

    7.7MB

  • memory/1940-82-0x0000000007D00000-0x0000000007D08000-memory.dmp

    Filesize

    32KB

  • memory/1940-64-0x0000000006C70000-0x0000000006C8E000-memory.dmp

    Filesize

    120KB

  • memory/1940-14-0x0000000005110000-0x0000000005146000-memory.dmp

    Filesize

    216KB

  • memory/1940-15-0x0000000074CD0000-0x0000000075480000-memory.dmp

    Filesize

    7.7MB

  • memory/1940-16-0x0000000005890000-0x0000000005EB8000-memory.dmp

    Filesize

    6.2MB

  • memory/1940-17-0x0000000074CD0000-0x0000000075480000-memory.dmp

    Filesize

    7.7MB

  • memory/1940-76-0x0000000007A50000-0x0000000007A5A000-memory.dmp

    Filesize

    40KB

  • memory/1940-79-0x0000000007C10000-0x0000000007C1E000-memory.dmp

    Filesize

    56KB

  • memory/1940-49-0x00000000066B0000-0x00000000066CE000-memory.dmp

    Filesize

    120KB

  • memory/1940-36-0x0000000005FD0000-0x0000000006036000-memory.dmp

    Filesize

    408KB

  • memory/1940-50-0x0000000006700000-0x000000000674C000-memory.dmp

    Filesize

    304KB

  • memory/1940-80-0x0000000007C20000-0x0000000007C34000-memory.dmp

    Filesize

    80KB

  • memory/1940-37-0x0000000074CD0000-0x0000000075480000-memory.dmp

    Filesize

    7.7MB

  • memory/1940-42-0x0000000006040000-0x00000000060A6000-memory.dmp

    Filesize

    408KB

  • memory/1940-81-0x0000000007D20000-0x0000000007D3A000-memory.dmp

    Filesize

    104KB

  • memory/1940-53-0x0000000075560000-0x00000000755AC000-memory.dmp

    Filesize

    304KB

  • memory/2440-97-0x0000000005BF0000-0x0000000005F44000-memory.dmp

    Filesize

    3.3MB

  • memory/2440-122-0x0000000006300000-0x000000000634C000-memory.dmp

    Filesize

    304KB

  • memory/2440-123-0x00000000755D0000-0x000000007561C000-memory.dmp

    Filesize

    304KB

  • memory/2440-133-0x0000000007280000-0x0000000007323000-memory.dmp

    Filesize

    652KB

  • memory/2440-144-0x00000000077F0000-0x0000000007801000-memory.dmp

    Filesize

    68KB

  • memory/2440-145-0x0000000007820000-0x0000000007834000-memory.dmp

    Filesize

    80KB

  • memory/2820-134-0x00000000755D0000-0x000000007561C000-memory.dmp

    Filesize

    304KB

  • memory/3924-5-0x0000000005060000-0x000000000506A000-memory.dmp

    Filesize

    40KB

  • memory/3924-6-0x0000000005220000-0x00000000052BC000-memory.dmp

    Filesize

    624KB

  • memory/3924-9-0x0000000006230000-0x0000000006284000-memory.dmp

    Filesize

    336KB

  • memory/3924-7-0x0000000006690000-0x00000000066A6000-memory.dmp

    Filesize

    88KB

  • memory/3924-1-0x0000000000500000-0x00000000005A8000-memory.dmp

    Filesize

    672KB

  • memory/3924-2-0x0000000005450000-0x00000000059F4000-memory.dmp

    Filesize

    5.6MB

  • memory/3924-3-0x0000000004F90000-0x0000000005022000-memory.dmp

    Filesize

    584KB

  • memory/3924-4-0x0000000074CD0000-0x0000000075480000-memory.dmp

    Filesize

    7.7MB

  • memory/3924-48-0x0000000074CD0000-0x0000000075480000-memory.dmp

    Filesize

    7.7MB

  • memory/3924-8-0x0000000006200000-0x000000000620E000-memory.dmp

    Filesize

    56KB

  • memory/3924-0-0x0000000074CDE000-0x0000000074CDF000-memory.dmp

    Filesize

    4KB

  • memory/4008-44-0x00000000058F0000-0x0000000005C44000-memory.dmp

    Filesize

    3.3MB

  • memory/4008-43-0x0000000074CD0000-0x0000000075480000-memory.dmp

    Filesize

    7.7MB

  • memory/4008-74-0x0000000007670000-0x0000000007CEA000-memory.dmp

    Filesize

    6.5MB

  • memory/4008-51-0x0000000006CA0000-0x0000000006CD2000-memory.dmp

    Filesize

    200KB

  • memory/4008-78-0x0000000007230000-0x0000000007241000-memory.dmp

    Filesize

    68KB

  • memory/4008-77-0x00000000072B0000-0x0000000007346000-memory.dmp

    Filesize

    600KB

  • memory/4008-85-0x0000000074CD0000-0x0000000075480000-memory.dmp

    Filesize

    7.7MB

  • memory/4008-73-0x0000000006EF0000-0x0000000006F93000-memory.dmp

    Filesize

    652KB

  • memory/4008-20-0x0000000074CD0000-0x0000000075480000-memory.dmp

    Filesize

    7.7MB

  • memory/4008-26-0x0000000005580000-0x00000000055A2000-memory.dmp

    Filesize

    136KB

  • memory/4008-52-0x0000000075560000-0x00000000755AC000-memory.dmp

    Filesize

    304KB

  • memory/4008-75-0x0000000007030000-0x000000000704A000-memory.dmp

    Filesize

    104KB

  • memory/4008-18-0x0000000074CD0000-0x0000000075480000-memory.dmp

    Filesize

    7.7MB

  • memory/4312-46-0x0000000000400000-0x0000000000412000-memory.dmp

    Filesize

    72KB