Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    09-10-2024 12:25

General

  • Target

    ccea7af19365b950a3f04f3867bb463cc2ac2343d449ec5b0807009c29ace47b.exe

  • Size

    258KB

  • MD5

    46bb734c47fd5bd04999e5854a4d3c6e

  • SHA1

    6dc503c57bd9dbd7dde00e969d6f325e6b51febf

  • SHA256

    ccea7af19365b950a3f04f3867bb463cc2ac2343d449ec5b0807009c29ace47b

  • SHA512

    90b16e51825d7d5311f21d2d6792add4f4bd090c3c39f2671550375f3a86f48ac56ce5b098e70d3f3d3034f929bb69a7a94ac8991c442a09e786fa378b0a3381

  • SSDEEP

    3072:+5anOtzyzmT53JiWYTxPdWnpsKtEhHQcx4sLSs99EIzpvf2iFgC79+tMQbI:+5UOkz4YpAOpusOq9EINeEgC79+ttI

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

Default

C2

154.216.17.207:7707

154.216.17.207:8808

154.216.17.207:1188

Mutex

AsyncMutex_6SI8OkPnk

Attributes
  • delay

    100

  • install

    true

  • install_file

    file.exe

  • install_folder

    %AppData%

aes.plain

Signatures

  • AsyncRat

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

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 3 IoCs
  • Suspicious use of SetThreadContext 4 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 2 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 8 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 1 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 19 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 47 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\ccea7af19365b950a3f04f3867bb463cc2ac2343d449ec5b0807009c29ace47b.exe
    "C:\Users\Admin\AppData\Local\Temp\ccea7af19365b950a3f04f3867bb463cc2ac2343d449ec5b0807009c29ace47b.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1996
    • C:\Users\Admin\AppData\Local\Temp\ccea7af19365b950a3f04f3867bb463cc2ac2343d449ec5b0807009c29ace47b.exe
      C:\Users\Admin\AppData\Local\Temp\ccea7af19365b950a3f04f3867bb463cc2ac2343d449ec5b0807009c29ace47b.exe
      2⤵
      • Checks computer location settings
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:3744
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "file" /tr '"C:\Users\Admin\AppData\Roaming\file.exe"' & exit
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:1008
        • C:\Windows\SysWOW64\schtasks.exe
          schtasks /create /f /sc onlogon /rl highest /tn "file" /tr '"C:\Users\Admin\AppData\Roaming\file.exe"'
          4⤵
          • System Location Discovery: System Language Discovery
          • Scheduled Task/Job: Scheduled Task
          PID:1800
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp45AA.tmp.bat""
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:1096
        • C:\Windows\SysWOW64\timeout.exe
          timeout 3
          4⤵
          • System Location Discovery: System Language Discovery
          • Delays execution with timeout.exe
          PID:3244
        • C:\Users\Admin\AppData\Roaming\file.exe
          "C:\Users\Admin\AppData\Roaming\file.exe"
          4⤵
          • Executes dropped EXE
          • Suspicious use of SetThreadContext
          • System Location Discovery: System Language Discovery
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:2944
          • C:\Users\Admin\AppData\Roaming\file.exe
            C:\Users\Admin\AppData\Roaming\file.exe
            5⤵
            • Executes dropped EXE
            PID:5064
            • C:\Windows\SysWOW64\WerFault.exe
              C:\Windows\SysWOW64\WerFault.exe -u -p 5064 -s 80
              6⤵
              • Program crash
              PID:1412
          • C:\Users\Admin\AppData\Roaming\file.exe
            C:\Users\Admin\AppData\Roaming\file.exe
            5⤵
            • Executes dropped EXE
            • System Location Discovery: System Language Discovery
            PID:4820
    • C:\Users\Admin\AppData\Local\Temp\ccea7af19365b950a3f04f3867bb463cc2ac2343d449ec5b0807009c29ace47b.exe
      C:\Users\Admin\AppData\Local\Temp\ccea7af19365b950a3f04f3867bb463cc2ac2343d449ec5b0807009c29ace47b.exe
      2⤵
        PID:4316
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 4316 -s 80
          3⤵
          • Program crash
          PID:2092
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4316 -ip 4316
      1⤵
        PID:4076
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 184 -p 5064 -ip 5064
        1⤵
          PID:4224

        Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\ccea7af19365b950a3f04f3867bb463cc2ac2343d449ec5b0807009c29ace47b.exe.log

          Filesize

          706B

          MD5

          d95c58e609838928f0f49837cab7dfd2

          SHA1

          55e7139a1e3899195b92ed8771d1ca2c7d53c916

          SHA256

          0407c814aef0d62aec7fd39b7c2f614746f0d8ff41f8ef957736f520f14b0339

          SHA512

          405310b29a833604c6627063bfdcf055a197e01f633ef21da238f1a6415a02e21315d689b4a6669db23e82152bed6f3492afb60963e6b2a0e9bb2ac09a480b5d

        • C:\Users\Admin\AppData\Local\Temp\tmp45AA.tmp.bat

          Filesize

          148B

          MD5

          089462dc28fc9c290b2c5fb43b0539f5

          SHA1

          0353e7ae6279711aa35eb717d8148ba2c57541c7

          SHA256

          662034b65a233698d9bc9db186cb19bc0a7a6330d0a4868a42819b9750a15b93

          SHA512

          2f24bb8f82e0ea101cc7f34c22949bc5d8b37e637d5c93d128419ae9a7a55ab6b330e6956f9c473ce6fb82ef61fbb3a6bbd7f55fa9163f311d3906b93ade7089

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

          Filesize

          258KB

          MD5

          46bb734c47fd5bd04999e5854a4d3c6e

          SHA1

          6dc503c57bd9dbd7dde00e969d6f325e6b51febf

          SHA256

          ccea7af19365b950a3f04f3867bb463cc2ac2343d449ec5b0807009c29ace47b

          SHA512

          90b16e51825d7d5311f21d2d6792add4f4bd090c3c39f2671550375f3a86f48ac56ce5b098e70d3f3d3034f929bb69a7a94ac8991c442a09e786fa378b0a3381

        • memory/1996-8-0x0000000005E70000-0x0000000005E76000-memory.dmp

          Filesize

          24KB

        • memory/1996-3-0x0000000074A70000-0x0000000075220000-memory.dmp

          Filesize

          7.7MB

        • memory/1996-5-0x0000000008290000-0x000000000832C000-memory.dmp

          Filesize

          624KB

        • memory/1996-6-0x00000000088E0000-0x0000000008E84000-memory.dmp

          Filesize

          5.6MB

        • memory/1996-7-0x00000000083D0000-0x0000000008462000-memory.dmp

          Filesize

          584KB

        • memory/1996-0-0x0000000074A7E000-0x0000000074A7F000-memory.dmp

          Filesize

          4KB

        • memory/1996-1-0x0000000000350000-0x000000000039A000-memory.dmp

          Filesize

          296KB

        • memory/1996-4-0x0000000004DE0000-0x0000000004E20000-memory.dmp

          Filesize

          256KB

        • memory/1996-2-0x00000000026E0000-0x00000000026E6000-memory.dmp

          Filesize

          24KB

        • memory/1996-14-0x0000000074A70000-0x0000000075220000-memory.dmp

          Filesize

          7.7MB

        • memory/3744-15-0x0000000074A70000-0x0000000075220000-memory.dmp

          Filesize

          7.7MB

        • memory/3744-16-0x0000000074A70000-0x0000000075220000-memory.dmp

          Filesize

          7.7MB

        • memory/3744-17-0x00000000052B0000-0x0000000005316000-memory.dmp

          Filesize

          408KB

        • memory/3744-21-0x0000000074A70000-0x0000000075220000-memory.dmp

          Filesize

          7.7MB

        • memory/3744-13-0x0000000074A70000-0x0000000075220000-memory.dmp

          Filesize

          7.7MB

        • memory/3744-9-0x0000000000400000-0x0000000000412000-memory.dmp

          Filesize

          72KB