Analysis

  • max time kernel
    148s
  • max time network
    148s
  • platform
    windows7_x64
  • resource
    win7-20231129-en
  • resource tags

    arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
  • submitted
    27-03-2024 00:13

General

  • Target

    e04e60efc406faefb13b0fd319e2251f.exe

  • Size

    632KB

  • MD5

    e04e60efc406faefb13b0fd319e2251f

  • SHA1

    9e0f221915f81e639a52eeaf76dc96f95ab05e4d

  • SHA256

    61cb3345fb32835c6be148fbcd92812c80cc168affea782936055ff62ca4dd4b

  • SHA512

    07b848691b0976b40411672b98030de36b4f10f1181f248f3150600a336cf3461ba1a2af2484399d2c43faeb5c474146edb206430990ca90f36684444cb77485

  • SSDEEP

    12288:0pacPt3R/dbmXv4k8OIpLaNrv/TFUVo6QyPa+DAB3YWLSiRw3K:K1KXL8hYFv/TmnibBzdp

Malware Config

Extracted

Family

asyncrat

Version

0.5.2

C2

sys2021.linkpc.net:6606

Mutex

cd6-c2e0e3fbeef6

Attributes
  • delay

    0

  • install

    true

  • install_file

    notepad.exe

  • install_folder

    %AppData%

aes.plain

Extracted

Family

nanocore

Version

1.2.2.0

C2

sys2021.linkpc.net:11940

23.94.82.41:11940

Mutex

de7e01ad-963b-4e14-81aa-08dfb351f0fe

Attributes
  • activate_away_mode

    false

  • backup_connection_host

    23.94.82.41

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2021-04-24T08:14:59.254967636Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    true

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    11940

  • default_group

    Do

  • enable_debug_mode

    true

  • gc_threshold

    1.048576e+07

  • keep_alive_timeout

    30000

  • keyboard_logging

    false

  • lan_timeout

    2500

  • max_packet_size

    1.048576e+07

  • mutex

    de7e01ad-963b-4e14-81aa-08dfb351f0fe

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    sys2021.linkpc.net

  • primary_dns_server

    8.8.8.8

  • request_elevation

    true

  • restart_delay

    5000

  • run_delay

    0

  • run_on_startup

    false

  • set_critical_process

    true

  • timeout_interval

    5000

  • use_custom_dns_server

    false

  • version

    1.2.2.0

  • wan_timeout

    8000

Signatures

  • AsyncRat

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

  • Contains code to disable Windows Defender 4 IoCs

    A .NET executable tasked with disabling Windows Defender capabilities such as realtime monitoring, blocking at first seen, etc.

  • Detect ZGRat V1 34 IoCs
  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
  • NanoCore

    NanoCore is a remote access tool (RAT) with a variety of capabilities.

  • ZGRat

    ZGRat is remote access trojan written in C#.

  • Async RAT payload 1 IoCs
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Program Files directory 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 1 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 30 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 46 IoCs
  • Suspicious use of WriteProcessMemory 34 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

Processes

  • C:\Users\Admin\AppData\Local\Temp\e04e60efc406faefb13b0fd319e2251f.exe
    "C:\Users\Admin\AppData\Local\Temp\e04e60efc406faefb13b0fd319e2251f.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2848
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Test-Connection 8.8.8.8
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2436
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Test-Connection 8.8.8.8
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2496
    • C:\Windows\SysWOW64\WScript.exe
      "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\Vzvcyragywwvopuhbwi.vbs"
      2⤵
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:2024
      • C:\Users\Admin\AppData\Local\Temp\Edthlzkghxuafibmavvextdclient startup.exe
        "C:\Users\Admin\AppData\Local\Temp\Edthlzkghxuafibmavvextdclient startup.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:604
        • C:\Windows\System32\WScript.exe
          "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\tmp1F4.tmp.vbs"
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:1212
          • C:\Windows\System32\schtasks.exe
            "C:\Windows\System32\schtasks.exe" /create /sc onlogon /rl highest /tn notepad.exe /tr "C:\Users\Admin\AppData\Roaming\notepad.exe
            5⤵
            • Creates scheduled task(s)
            PID:1640
        • C:\Users\Admin\AppData\Roaming\notepad.exe
          "C:\Users\Admin\AppData\Roaming\notepad.exe"
          4⤵
          • Executes dropped EXE
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:2996
    • C:\Users\Admin\AppData\Local\Temp\e04e60efc406faefb13b0fd319e2251f.exe
      C:\Users\Admin\AppData\Local\Temp\e04e60efc406faefb13b0fd319e2251f.exe
      2⤵
      • Adds Run key to start application
      • Checks whether UAC is enabled
      • Drops file in Program Files directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      PID:2844
  • C:\Windows\system32\wbem\WmiApSrv.exe
    C:\Windows\system32\wbem\WmiApSrv.exe
    1⤵
      PID:1084
    • C:\Windows\system32\wbem\WmiApSrv.exe
      C:\Windows\system32\wbem\WmiApSrv.exe
      1⤵
        PID:2924

      Network

      MITRE ATT&CK Matrix ATT&CK v13

      Execution

      Scheduled Task/Job

      1
      T1053

      Persistence

      Boot or Logon Autostart Execution

      2
      T1547

      Registry Run Keys / Startup Folder

      1
      T1547.001

      Winlogon Helper DLL

      1
      T1547.004

      Scheduled Task/Job

      1
      T1053

      Privilege Escalation

      Boot or Logon Autostart Execution

      2
      T1547

      Registry Run Keys / Startup Folder

      1
      T1547.001

      Winlogon Helper DLL

      1
      T1547.004

      Scheduled Task/Job

      1
      T1053

      Defense Evasion

      Modify Registry

      2
      T1112

      Discovery

      System Information Discovery

      2
      T1082

      Query Registry

      1
      T1012

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\Users\Admin\AppData\Local\Temp\Edthlzkghxuafibmavvextdclient startup.exe
        Filesize

        119KB

        MD5

        7c065aaedcccc8330d30dd098e2d080a

        SHA1

        d8e1a9251e02062264229d2b92366b33cba3615e

        SHA256

        8892f38077963d30d807e405177ca889e327e447473066ba7dbddacc58a5562c

        SHA512

        a193e0f337a16965726b0481324eda249e9f53ab0d24b48d63d736be35ff7208cab29fb6a5a6fc7c31dc34ddbba5423a2d4d4c1ecaf1f50c29f336c1fcb12469

      • C:\Users\Admin\AppData\Local\Temp\Vzvcyragywwvopuhbwi.vbs
        Filesize

        125B

        MD5

        e43caabb477eff9358b404c0658ea4b8

        SHA1

        ff9530a0a971b26d85323abe290427a32f135fe4

        SHA256

        796965acba70efdb0bc8d6633f5d35e745ce49d09f6600d8ff151545563c9430

        SHA512

        7eb32002d2a08d9342020bb0f073d21772f9569b9133a0f36334f3acaaefab2aab8c52f3b27ee4fc23148bab3ebd8cbdc15f7a1656ae9bf67997e3cc891383a8

      • C:\Users\Admin\AppData\Local\Temp\tmp1F4.tmp.vbs
        Filesize

        216B

        MD5

        3fd8d047dc23e8fe24f9cf58c7cd2b55

        SHA1

        57cf93639c8ed34f5bc06c4a7d795d712d3b8648

        SHA256

        4b207de241dc5c2ae5904d574fcccfbd2a85153c7b13f667055e96d15ad9eaec

        SHA512

        5d36a0ac43f312f8a6fc51e290aa56c687b1ff9a813f87a3f019452fc4db2a25ecb7596eda917db2748257c6d814eb14668b8ba16a1f630f0ae36723a6a35d8b

      • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms
        Filesize

        7KB

        MD5

        40d34c61ebde28c27db043dcac33091c

        SHA1

        c606f3720f79c8891fee9a7af6ee2826da71f9c7

        SHA256

        f475e1204935c444694eae904fb9329167e94029628687e021342c79ee80bbc0

        SHA512

        4599f387638db332be5a74657e7903085f0f2a83b9e06a010660c18b7afbdafc44766c40d7a1375c19769a38517f838e13a1ebdb1b84b560d14f8668d817b9e8

      • memory/604-1973-0x0000000000FE0000-0x0000000001004000-memory.dmp
        Filesize

        144KB

      • memory/604-1992-0x000007FEF5B90000-0x000007FEF657C000-memory.dmp
        Filesize

        9.9MB

      • memory/604-1976-0x000007FEF5B90000-0x000007FEF657C000-memory.dmp
        Filesize

        9.9MB

      • memory/604-1981-0x000000001B280000-0x000000001B300000-memory.dmp
        Filesize

        512KB

      • memory/2436-5-0x000000006FA20000-0x000000006FFCB000-memory.dmp
        Filesize

        5.7MB

      • memory/2436-6-0x000000006FA20000-0x000000006FFCB000-memory.dmp
        Filesize

        5.7MB

      • memory/2436-7-0x0000000002870000-0x00000000028B0000-memory.dmp
        Filesize

        256KB

      • memory/2436-8-0x000000006FA20000-0x000000006FFCB000-memory.dmp
        Filesize

        5.7MB

      • memory/2496-18-0x0000000002A60000-0x0000000002AA0000-memory.dmp
        Filesize

        256KB

      • memory/2496-17-0x000000006F770000-0x000000006FD1B000-memory.dmp
        Filesize

        5.7MB

      • memory/2496-20-0x000000006F770000-0x000000006FD1B000-memory.dmp
        Filesize

        5.7MB

      • memory/2496-16-0x0000000002A60000-0x0000000002AA0000-memory.dmp
        Filesize

        256KB

      • memory/2496-15-0x000000006F770000-0x000000006FD1B000-memory.dmp
        Filesize

        5.7MB

      • memory/2844-1980-0x0000000000470000-0x000000000047A000-memory.dmp
        Filesize

        40KB

      • memory/2844-1979-0x0000000000450000-0x000000000046E000-memory.dmp
        Filesize

        120KB

      • memory/2844-1978-0x0000000000260000-0x00000000002A0000-memory.dmp
        Filesize

        256KB

      • memory/2844-1977-0x0000000000440000-0x000000000044A000-memory.dmp
        Filesize

        40KB

      • memory/2844-1995-0x00000000747A0000-0x0000000074E8E000-memory.dmp
        Filesize

        6.9MB

      • memory/2844-1972-0x0000000000400000-0x0000000000438000-memory.dmp
        Filesize

        224KB

      • memory/2844-1971-0x00000000747A0000-0x0000000074E8E000-memory.dmp
        Filesize

        6.9MB

      • memory/2844-1996-0x0000000000260000-0x00000000002A0000-memory.dmp
        Filesize

        256KB

      • memory/2848-23-0x0000000005250000-0x00000000052BE000-memory.dmp
        Filesize

        440KB

      • memory/2848-56-0x0000000005250000-0x00000000052BE000-memory.dmp
        Filesize

        440KB

      • memory/2848-42-0x0000000005250000-0x00000000052BE000-memory.dmp
        Filesize

        440KB

      • memory/2848-44-0x0000000005250000-0x00000000052BE000-memory.dmp
        Filesize

        440KB

      • memory/2848-50-0x0000000005250000-0x00000000052BE000-memory.dmp
        Filesize

        440KB

      • memory/2848-52-0x0000000005250000-0x00000000052BE000-memory.dmp
        Filesize

        440KB

      • memory/2848-48-0x0000000005250000-0x00000000052BE000-memory.dmp
        Filesize

        440KB

      • memory/2848-46-0x0000000005250000-0x00000000052BE000-memory.dmp
        Filesize

        440KB

      • memory/2848-58-0x0000000005250000-0x00000000052BE000-memory.dmp
        Filesize

        440KB

      • memory/2848-66-0x0000000005250000-0x00000000052BE000-memory.dmp
        Filesize

        440KB

      • memory/2848-74-0x0000000005250000-0x00000000052BE000-memory.dmp
        Filesize

        440KB

      • memory/2848-78-0x0000000005250000-0x00000000052BE000-memory.dmp
        Filesize

        440KB

      • memory/2848-80-0x0000000005250000-0x00000000052BE000-memory.dmp
        Filesize

        440KB

      • memory/2848-82-0x0000000005250000-0x00000000052BE000-memory.dmp
        Filesize

        440KB

      • memory/2848-76-0x0000000005250000-0x00000000052BE000-memory.dmp
        Filesize

        440KB

      • memory/2848-84-0x0000000005250000-0x00000000052BE000-memory.dmp
        Filesize

        440KB

      • memory/2848-72-0x0000000005250000-0x00000000052BE000-memory.dmp
        Filesize

        440KB

      • memory/2848-86-0x0000000005250000-0x00000000052BE000-memory.dmp
        Filesize

        440KB

      • memory/2848-70-0x0000000005250000-0x00000000052BE000-memory.dmp
        Filesize

        440KB

      • memory/2848-68-0x0000000005250000-0x00000000052BE000-memory.dmp
        Filesize

        440KB

      • memory/2848-64-0x0000000005250000-0x00000000052BE000-memory.dmp
        Filesize

        440KB

      • memory/2848-62-0x0000000005250000-0x00000000052BE000-memory.dmp
        Filesize

        440KB

      • memory/2848-60-0x0000000005250000-0x00000000052BE000-memory.dmp
        Filesize

        440KB

      • memory/2848-40-0x0000000005250000-0x00000000052BE000-memory.dmp
        Filesize

        440KB

      • memory/2848-54-0x0000000005250000-0x00000000052BE000-memory.dmp
        Filesize

        440KB

      • memory/2848-38-0x0000000005250000-0x00000000052BE000-memory.dmp
        Filesize

        440KB

      • memory/2848-36-0x0000000005250000-0x00000000052BE000-memory.dmp
        Filesize

        440KB

      • memory/2848-34-0x0000000005250000-0x00000000052BE000-memory.dmp
        Filesize

        440KB

      • memory/2848-32-0x0000000005250000-0x00000000052BE000-memory.dmp
        Filesize

        440KB

      • memory/2848-1970-0x00000000747A0000-0x0000000074E8E000-memory.dmp
        Filesize

        6.9MB

      • memory/2848-30-0x0000000005250000-0x00000000052BE000-memory.dmp
        Filesize

        440KB

      • memory/2848-28-0x0000000005250000-0x00000000052BE000-memory.dmp
        Filesize

        440KB

      • memory/2848-26-0x0000000005250000-0x00000000052BE000-memory.dmp
        Filesize

        440KB

      • memory/2848-24-0x0000000005250000-0x00000000052BE000-memory.dmp
        Filesize

        440KB

      • memory/2848-0-0x00000000011B0000-0x0000000001254000-memory.dmp
        Filesize

        656KB

      • memory/2848-22-0x0000000005250000-0x00000000052C4000-memory.dmp
        Filesize

        464KB

      • memory/2848-21-0x0000000005150000-0x00000000051C4000-memory.dmp
        Filesize

        464KB

      • memory/2848-19-0x0000000001030000-0x0000000001070000-memory.dmp
        Filesize

        256KB

      • memory/2848-1-0x00000000747A0000-0x0000000074E8E000-memory.dmp
        Filesize

        6.9MB

      • memory/2848-2-0x0000000001030000-0x0000000001070000-memory.dmp
        Filesize

        256KB

      • memory/2848-14-0x00000000747A0000-0x0000000074E8E000-memory.dmp
        Filesize

        6.9MB

      • memory/2996-1994-0x00000000004C0000-0x0000000000540000-memory.dmp
        Filesize

        512KB

      • memory/2996-1993-0x000007FEF5B90000-0x000007FEF657C000-memory.dmp
        Filesize

        9.9MB

      • memory/2996-1991-0x0000000000860000-0x0000000000884000-memory.dmp
        Filesize

        144KB

      • memory/2996-1997-0x000007FEF5B90000-0x000007FEF657C000-memory.dmp
        Filesize

        9.9MB

      • memory/2996-1998-0x00000000004C0000-0x0000000000540000-memory.dmp
        Filesize

        512KB