Analysis

  • max time kernel
    149s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    07/04/2024, 07:31

General

  • Target
    0eec3b50636ae6d37613e6a2c7617191.exe
  • Size 492KB
  • Sample240407-jcdj6aga3s
  • SHA256 32dc8827ff96982401777cd7feb77798660450a3e8960855577e8ace837f8b05
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10

Malware Config

Extracted

Family
  • asyncrat

Version
  • 0.5.7B

Botnet
  • Default

C2
  • 194.147.140.157:3361

Mutex
  • AsyncMutex_6SI8OkPnk

Attributes
  • delay

    3

  • install

    true

  • install_file

    msdtc.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 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).

  • Creates scheduled task(s) 1 TTPs 3 IoCs

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

  • Delays execution with timeout.exe 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 53 IoCs
  • Suspicious use of AdjustPrivilegeToken 8 IoCs
  • Suspicious use of WriteProcessMemory 61 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\0eec3b50636ae6d37613e6a2c7617191.exe
    "C:\Users\Admin\AppData\Local\Temp\0eec3b50636ae6d37613e6a2c7617191.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2904
    • 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\0eec3b50636ae6d37613e6a2c7617191.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4000
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\gYVTyaODtj.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1876
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\gYVTyaODtj" /XML "C:\Users\Admin\AppData\Local\Temp\tmpAE70.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:3228
    • C:\Users\Admin\AppData\Local\Temp\0eec3b50636ae6d37613e6a2c7617191.exe
      "C:\Users\Admin\AppData\Local\Temp\0eec3b50636ae6d37613e6a2c7617191.exe"
      2⤵
        PID:2004
      • C:\Users\Admin\AppData\Local\Temp\0eec3b50636ae6d37613e6a2c7617191.exe
        "C:\Users\Admin\AppData\Local\Temp\0eec3b50636ae6d37613e6a2c7617191.exe"
        2⤵
          PID:596
        • C:\Users\Admin\AppData\Local\Temp\0eec3b50636ae6d37613e6a2c7617191.exe
          "C:\Users\Admin\AppData\Local\Temp\0eec3b50636ae6d37613e6a2c7617191.exe"
          2⤵
            PID:452
          • C:\Users\Admin\AppData\Local\Temp\0eec3b50636ae6d37613e6a2c7617191.exe
            "C:\Users\Admin\AppData\Local\Temp\0eec3b50636ae6d37613e6a2c7617191.exe"
            2⤵
            • Checks computer location settings
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of WriteProcessMemory
            PID:2260
            • C:\Windows\SysWOW64\cmd.exe
              "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "msdtc" /tr '"C:\Users\Admin\AppData\Roaming\msdtc.exe"' & exit
              3⤵
              • Suspicious use of WriteProcessMemory
              PID:4692
              • C:\Windows\SysWOW64\schtasks.exe
                schtasks /create /f /sc onlogon /rl highest /tn "msdtc" /tr '"C:\Users\Admin\AppData\Roaming\msdtc.exe"'
                4⤵
                • Creates scheduled task(s)
                PID:4912
            • C:\Windows\SysWOW64\cmd.exe
              C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpC498.tmp.bat""
              3⤵
              • Suspicious use of WriteProcessMemory
              PID:4840
              • C:\Windows\SysWOW64\timeout.exe
                timeout 3
                4⤵
                • Delays execution with timeout.exe
                PID:944
              • C:\Users\Admin\AppData\Roaming\msdtc.exe
                "C:\Users\Admin\AppData\Roaming\msdtc.exe"
                4⤵
                • Checks computer location settings
                • Executes dropped EXE
                • Suspicious use of SetThreadContext
                • Suspicious behavior: EnumeratesProcesses
                • Suspicious use of AdjustPrivilegeToken
                • Suspicious use of WriteProcessMemory
                PID:1192
                • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
                  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\msdtc.exe"
                  5⤵
                  • Suspicious behavior: EnumeratesProcesses
                  • Suspicious use of AdjustPrivilegeToken
                  PID:2248
                • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
                  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\gYVTyaODtj.exe"
                  5⤵
                  • Suspicious behavior: EnumeratesProcesses
                  • Suspicious use of AdjustPrivilegeToken
                  PID:4016
                • C:\Windows\SysWOW64\schtasks.exe
                  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\gYVTyaODtj" /XML "C:\Users\Admin\AppData\Local\Temp\tmp20D1.tmp"
                  5⤵
                  • Creates scheduled task(s)
                  PID:2572
                • C:\Users\Admin\AppData\Roaming\msdtc.exe
                  "C:\Users\Admin\AppData\Roaming\msdtc.exe"
                  5⤵
                  • Executes dropped EXE
                  PID:4396
                • C:\Users\Admin\AppData\Roaming\msdtc.exe
                  "C:\Users\Admin\AppData\Roaming\msdtc.exe"
                  5⤵
                  • Executes dropped EXE
                  • Suspicious use of AdjustPrivilegeToken
                  PID:764

        Network

              MITRE ATT&CK Enterprise v15

              Replay Monitor

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              Downloads

              0eec3b50636ae6d37613e6a2c7617191.exe.log

              • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\0eec3b50636ae6d37613e6a2c7617191.exe.log
              • Size 1KB
              • SHA256 7667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982
              • MD5 SHA1 SHA512

              powershell.exe.log

              • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log
              • Size 2KB
              • SHA256 92099c10776bb7e3f2a8d1b82d4d40d0c4627e4f1bf754a6e58dfd2c2e97042a
              • MD5 SHA1 SHA512

              StartupProfileData-NonInteractive

              • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
              • Size 18KB
              • SHA256 7493a28ea64fadeefa194b50e1ce20e3887a0e2a086ab4f73209c92961ed18cf
              • MD5 SHA1 SHA512 SSDEEP

              StartupProfileData-NonInteractive

              • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
              • Size 18KB
              • SHA256 70ece5c7da0c72c3a4b46ad344753425361bb48a67abb1ca2ef1312d4ad1c8bb
              • MD5 SHA1 SHA512 SSDEEP

              __PSScriptPolicyTest_lfdijsi5.cjp.ps1

              • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_lfdijsi5.cjp.ps1
              • Size 60B
              • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
              • MD5 SHA1 SHA512

              tmpAE70.tmp

              • Path C:\Users\Admin\AppData\Local\Temp\tmpAE70.tmp
              • Size 1KB
              • SHA256 6d2846aba7d75c4ab57bf8f9a1cbded27e2f64999024d4ee1626a639bd0b8946
              • MD5 SHA1 SHA512

              tmpC498.tmp.bat

              • Path C:\Users\Admin\AppData\Local\Temp\tmpC498.tmp.bat
              • Size 149B
              • SHA256 5b1f1e643b750dc14c70c45ab98a07dce1bf076e7e571bd6fa88a35d3a17da4b
              • MD5 SHA1 SHA512

              msdtc.exe

              • Path C:\Users\Admin\AppData\Roaming\msdtc.exe
              • Size 492KB
              • SHA256 32dc8827ff96982401777cd7feb77798660450a3e8960855577e8ace837f8b05
              • MD5 SHA1 SHA512 SSDEEP

              memory/764-121-0x0000000074D20000-0x00000000754D0000-memory.dmp

              memory/1192-106-0x0000000074D20000-0x00000000754D0000-memory.dmp

              memory/1192-108-0x0000000074D20000-0x00000000754D0000-memory.dmp

              memory/1192-107-0x0000000004A90000-0x0000000004AA0000-memory.dmp

              memory/1192-122-0x0000000074D20000-0x00000000754D0000-memory.dmp

              memory/1192-115-0x0000000004A90000-0x0000000004AA0000-memory.dmp

              memory/1876-39-0x0000000005D60000-0x00000000060B4000-memory.dmp

              memory/1876-52-0x0000000006360000-0x00000000063AC000-memory.dmp

              memory/1876-20-0x0000000004E30000-0x0000000004E40000-memory.dmp

              memory/1876-19-0x0000000074D20000-0x00000000754D0000-memory.dmp

              memory/1876-67-0x000000007F950000-0x000000007F960000-memory.dmp

              memory/1876-15-0x0000000004D20000-0x0000000004D56000-memory.dmp

              memory/1876-25-0x0000000005C10000-0x0000000005C76000-memory.dmp

              memory/1876-78-0x0000000004E30000-0x0000000004E40000-memory.dmp

              memory/1876-65-0x0000000006880000-0x000000000689E000-memory.dmp

              memory/1876-38-0x0000000004E30000-0x0000000004E40000-memory.dmp

              memory/1876-95-0x0000000074D20000-0x00000000754D0000-memory.dmp

              memory/1876-81-0x00000000075F0000-0x000000000760A000-memory.dmp

              memory/1876-82-0x0000000007660000-0x000000000766A000-memory.dmp

              memory/1876-83-0x0000000007870000-0x0000000007906000-memory.dmp

              memory/1876-88-0x0000000007910000-0x0000000007918000-memory.dmp

              memory/1876-84-0x00000000077F0000-0x0000000007801000-memory.dmp

              memory/1876-18-0x0000000005470000-0x0000000005A98000-memory.dmp

              memory/1876-54-0x00000000755B0000-0x00000000755FC000-memory.dmp

              memory/2248-144-0x0000000075610000-0x000000007565C000-memory.dmp

              memory/2248-143-0x0000000005B50000-0x0000000005B9C000-memory.dmp

              memory/2248-132-0x0000000005510000-0x0000000005864000-memory.dmp

              memory/2248-111-0x0000000002280000-0x0000000002290000-memory.dmp

              memory/2248-110-0x0000000074D20000-0x00000000754D0000-memory.dmp

              memory/2260-96-0x0000000005530000-0x0000000005540000-memory.dmp

              memory/2260-101-0x0000000074D20000-0x00000000754D0000-memory.dmp

              memory/2260-23-0x0000000000400000-0x0000000000412000-memory.dmp

              memory/2260-41-0x0000000074D20000-0x00000000754D0000-memory.dmp

              memory/2904-8-0x00000000069E0000-0x0000000006A34000-memory.dmp

              memory/2904-5-0x00000000056E0000-0x00000000056EA000-memory.dmp

              memory/2904-4-0x00000000055C0000-0x00000000055D0000-memory.dmp

              memory/2904-6-0x0000000005CD0000-0x0000000005CEA000-memory.dmp

              memory/2904-7-0x00000000067A0000-0x00000000067AC000-memory.dmp

              memory/2904-3-0x0000000005620000-0x00000000056B2000-memory.dmp

              memory/2904-9-0x00000000091A0000-0x000000000923C000-memory.dmp

              memory/2904-2-0x0000000005CF0000-0x0000000006294000-memory.dmp

              memory/2904-40-0x0000000074D20000-0x00000000754D0000-memory.dmp

              memory/2904-12-0x0000000074D20000-0x00000000754D0000-memory.dmp

              memory/2904-16-0x00000000055C0000-0x00000000055D0000-memory.dmp

              memory/2904-1-0x0000000074D20000-0x00000000754D0000-memory.dmp

              memory/2904-0-0x0000000000BC0000-0x0000000000C3C000-memory.dmp

              memory/4000-21-0x00000000052E0000-0x0000000005302000-memory.dmp

              memory/4000-51-0x0000000005A50000-0x0000000005A6E000-memory.dmp

              memory/4000-24-0x0000000000890000-0x00000000008A0000-memory.dmp

              memory/4000-94-0x0000000074D20000-0x00000000754D0000-memory.dmp

              memory/4000-22-0x0000000074D20000-0x00000000754D0000-memory.dmp

              memory/4000-33-0x0000000000890000-0x00000000008A0000-memory.dmp

              memory/4000-26-0x0000000005470000-0x00000000054D6000-memory.dmp

              memory/4000-87-0x00000000070D0000-0x00000000070EA000-memory.dmp

              memory/4000-79-0x0000000000890000-0x00000000008A0000-memory.dmp

              memory/4000-80-0x00000000073D0000-0x0000000007A4A000-memory.dmp

              memory/4000-86-0x0000000006FD0000-0x0000000006FE4000-memory.dmp

              memory/4000-85-0x0000000006FC0000-0x0000000006FCE000-memory.dmp

              memory/4000-53-0x0000000006A20000-0x0000000006A52000-memory.dmp

              memory/4000-77-0x0000000006A60000-0x0000000006B03000-memory.dmp

              memory/4000-66-0x00000000755B0000-0x00000000755FC000-memory.dmp

              memory/4000-55-0x000000007FA10000-0x000000007FA20000-memory.dmp

              memory/4016-116-0x0000000074D20000-0x00000000754D0000-memory.dmp

              memory/4016-114-0x0000000002240000-0x0000000002250000-memory.dmp

              memory/4016-112-0x0000000002240000-0x0000000002250000-memory.dmp