Analysis

  • max time kernel
    144s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    13-01-2025 02:27

General

  • Target

    782d0356109cd4bdbf0c69932dd6f753754a426927c26f7db60bff7344c46c1a.exe

  • Size

    1.0MB

  • MD5

    33961801df7df4040fb2282d6103286c

  • SHA1

    1c0b29fa3a333974788a71c896e30f38e2bf3769

  • SHA256

    782d0356109cd4bdbf0c69932dd6f753754a426927c26f7db60bff7344c46c1a

  • SHA512

    0d7a73ff1312de597fc71d3d5d0dda34e326ad2268a762695487547361a734568f21f1d0856dd9a502b704a9d5caa7ebc547baa329dc0f906ec003ca23dbd44a

  • SSDEEP

    24576:CMjhKbkkc7tiPbWJF9WUqMFWsRvtciqgQRgOD39wKX:RI4kOtiTQWU4SciuRgC9T

Malware Config

Extracted

Family

asyncrat

Version

v1.2.2

Botnet

Default

C2

27.124.6.137:13651

Mutex

oayguxqwqnan

Attributes
  • delay

    1

  • install

    false

  • install_folder

    %AppData%

aes.plain

Signatures

  • AsyncRat

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

  • Asyncrat family
  • Async RAT payload 1 IoCs
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 4 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Command and Scripting Interpreter: PowerShell 1 TTPs 5 IoCs

    Run Powershell to execute payload.

  • System Location Discovery: System Language Discovery 1 TTPs 7 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
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 28 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\782d0356109cd4bdbf0c69932dd6f753754a426927c26f7db60bff7344c46c1a.exe
    "C:\Users\Admin\AppData\Local\Temp\782d0356109cd4bdbf0c69932dd6f753754a426927c26f7db60bff7344c46c1a.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:5088
    • C:\Users\Admin\AppData\Local\Temp\is-F6PRK.tmp\782d0356109cd4bdbf0c69932dd6f753754a426927c26f7db60bff7344c46c1a.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-F6PRK.tmp\782d0356109cd4bdbf0c69932dd6f753754a426927c26f7db60bff7344c46c1a.tmp" /SL5="$70284,702433,203776,C:\Users\Admin\AppData\Local\Temp\782d0356109cd4bdbf0c69932dd6f753754a426927c26f7db60bff7344c46c1a.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:1680
      • C:\Windows\SysWOW64\cmd.exe
        "cmd.exe" /C timeout /T 3 & "C:\Users\Admin\AppData\Local\Temp\782d0356109cd4bdbf0c69932dd6f753754a426927c26f7db60bff7344c46c1a.exe" /VERYSILENT /SUPPRESSMSGBOXES
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2852
        • C:\Windows\SysWOW64\timeout.exe
          timeout /T 3
          4⤵
          • System Location Discovery: System Language Discovery
          • Delays execution with timeout.exe
          PID:2036
        • C:\Users\Admin\AppData\Local\Temp\782d0356109cd4bdbf0c69932dd6f753754a426927c26f7db60bff7344c46c1a.exe
          "C:\Users\Admin\AppData\Local\Temp\782d0356109cd4bdbf0c69932dd6f753754a426927c26f7db60bff7344c46c1a.exe" /VERYSILENT /SUPPRESSMSGBOXES
          4⤵
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:2108
          • C:\Users\Admin\AppData\Local\Temp\is-F3UF0.tmp\782d0356109cd4bdbf0c69932dd6f753754a426927c26f7db60bff7344c46c1a.tmp
            "C:\Users\Admin\AppData\Local\Temp\is-F3UF0.tmp\782d0356109cd4bdbf0c69932dd6f753754a426927c26f7db60bff7344c46c1a.tmp" /SL5="$901F8,702433,203776,C:\Users\Admin\AppData\Local\Temp\782d0356109cd4bdbf0c69932dd6f753754a426927c26f7db60bff7344c46c1a.exe" /VERYSILENT /SUPPRESSMSGBOXES
            5⤵
            • Executes dropped EXE
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of FindShellTrayWindow
            • Suspicious use of WriteProcessMemory
            PID:2144
            • C:\Windows\SysWOW64\regsvr32.exe
              "regsvr32.exe" /s /i:INSTALL "C:\Users\Admin\AppData\Roaming\\UptightChicken.dat"
              6⤵
              • Loads dropped DLL
              • System Location Discovery: System Language Discovery
              • Suspicious use of WriteProcessMemory
              PID:4860
              • C:\Windows\system32\regsvr32.exe
                /s /i:INSTALL "C:\Users\Admin\AppData\Roaming\\UptightChicken.dat"
                7⤵
                • Loads dropped DLL
                • Suspicious behavior: EnumeratesProcesses
                • Suspicious use of SetWindowsHookEx
                • Suspicious use of WriteProcessMemory
                PID:884
                • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
                  "powershell" -Command "if (Get-ScheduledTask | Where-Object { $_.Actions.Execute -eq 'regsvr32' -and $_.Actions.Arguments -eq '/S /i:INSTALL C:\Users\Admin\AppData\Roaming\UptightChicken.dat' }) { exit 0 } else { exit 1 }"
                  8⤵
                  • Command and Scripting Interpreter: PowerShell
                  • Suspicious behavior: EnumeratesProcesses
                  • Suspicious use of AdjustPrivilegeToken
                  PID:972
                • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
                  "powershell" "Register-ScheduledTask -Action (New-ScheduledTaskAction -Execute \"regsvr32\" -Argument \"/S /i:INSTALL C:\Users\Admin\AppData\Roaming\UptightChicken.dat\") -Trigger (New-ScheduledTaskTrigger -Once -At (Get-Date).AddMinutes(1) -RepetitionInterval (New-TimeSpan -Minutes 1)) -TaskName 'MicrosoftEdgeUpdateTaskMachineUA{7492FB32-CACD-4BD3-C1F9-C6E2D036521E}' -Description 'Default' -Settings (New-ScheduledTaskSettingsSet -AllowStartIfOnBatteries -DontStopIfGoingOnBatteries -ExecutionTimeLimit 0) -RunLevel Highest"
                  8⤵
                  • Command and Scripting Interpreter: PowerShell
                  • Suspicious behavior: EnumeratesProcesses
                  • Suspicious use of AdjustPrivilegeToken
                  PID:452
  • C:\Windows\system32\regsvr32.EXE
    C:\Windows\system32\regsvr32.EXE /S /i:INSTALL C:\Users\Admin\AppData\Roaming\UptightChicken.dat
    1⤵
    • Loads dropped DLL
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:4972
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "powershell" -Command "if (Get-ScheduledTask | Where-Object { $_.Actions.Execute -eq 'regsvr32' -and $_.Actions.Arguments -eq '/S /i:INSTALL C:\Users\Admin\AppData\Roaming\UptightChicken.dat' }) { exit 0 } else { exit 1 }"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      PID:2836
  • C:\Windows\system32\regsvr32.EXE
    C:\Windows\system32\regsvr32.EXE /S /i:INSTALL C:\Users\Admin\AppData\Roaming\UptightChicken.dat
    1⤵
    • Loads dropped DLL
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:3952
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "powershell" -Command "if (Get-ScheduledTask | Where-Object { $_.Actions.Execute -eq 'regsvr32' -and $_.Actions.Arguments -eq '/S /i:INSTALL C:\Users\Admin\AppData\Roaming\UptightChicken.dat' }) { exit 0 } else { exit 1 }"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      PID:1412

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    3KB

    MD5

    661739d384d9dfd807a089721202900b

    SHA1

    5b2c5d6a7122b4ce849dc98e79a7713038feac55

    SHA256

    70c3ecbaa6df88e88df4efc70968502955e890a2248269641c4e2d4668ef61bf

    SHA512

    81b48ae5c4064c4d9597303d913e32d3954954ba1c8123731d503d1653a0d848856812d2ee6951efe06b1db2b91a50e5d54098f60c26f36bc8390203f4c8a2d8

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

    Filesize

    1KB

    MD5

    d876732bbd3f6c9cf9e2be236480e367

    SHA1

    8f2dd87515f7bcf62cc89a8a27cc4fa7817e0823

    SHA256

    a4cea038e351c82952d795d84b29fc3e92680560d881bb86fe9dfbc4658dd9d0

    SHA512

    375217306f3de9bf02548db09efba9065b84314a1ddecba022613f9502a3302c3e7a800561253c8a2b6bfade0f5f8dd5c5a1ad4e58e45c613965c4564bfb14ab

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

    Filesize

    1KB

    MD5

    7b83052d233778f3041cbe528da041ba

    SHA1

    06a90380d32a7671e40af152f9d7f760012f95b9

    SHA256

    1b8b2000241fefe3e07d0b47e9ffb20a797bc91ae7bb298d0dc509f8f8785654

    SHA512

    d524cd16f51d7e0c64f38347e2916fdc3ebad834d77a2de8627211980105fc0bf68afc3b81d48f456f8f64876132909c4e38d998cc7bfed05250689f8b0685af

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

    Filesize

    1KB

    MD5

    5513217402ea7dca2dc6c9fc9d2b9ea9

    SHA1

    46d092675f5fa1aa6d35639aabc2d5a90dd86aba

    SHA256

    c622df5e5cfb2216c16037f88376f41698c84bdefe7d9c67347915a8739f437a

    SHA512

    6d94a6487f16d5cfc37ca28ef8fd4c029219fe8a11c5ce833475eaa1d6a1baecd99338ec3a870894868d74cc00bb05773b0942dac5641c70ddf9ec9f2ddb71bb

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_lymepm1j.l0q.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\AppData\Local\Temp\is-F6PRK.tmp\782d0356109cd4bdbf0c69932dd6f753754a426927c26f7db60bff7344c46c1a.tmp

    Filesize

    1.2MB

    MD5

    75c6fbc94f75010aebb8c0c11a646fcc

    SHA1

    00de6a9f9b02ac9e24db302fc705420740ca9029

    SHA256

    ba9099f858da9b41bae8a46ca4b8a61b099a18cdbf43bcd3a2c31c0b8e30bede

    SHA512

    e7f8d81d430258a3ddb07e2798cceb2a8cdd2e3150cdce8e88b745dfdf14f3491076212256a7d3c1b43217c47dd182c9822b4e9da34dbcf7760cbf05d525602b

  • C:\Users\Admin\AppData\Local\Temp\is-R8N3B.tmp\_isetup\_shfoldr.dll

    Filesize

    22KB

    MD5

    92dc6ef532fbb4a5c3201469a5b5eb63

    SHA1

    3e89ff837147c16b4e41c30d6c796374e0b8e62c

    SHA256

    9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

    SHA512

    9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

  • C:\Users\Admin\AppData\Roaming\UptightChicken.dat

    Filesize

    1.4MB

    MD5

    f7af43ee4b917ecc5051c5cb3a0ffe5c

    SHA1

    786c74765b5121ab1fa431fc02d8dfd54eae9458

    SHA256

    a43e88349c0757c3f122657e6696becde5316f9c31764eaee04e722a87f4b15b

    SHA512

    6d7872e536e1c4aad3dc06f3d244c2f40bfe2dda417c7555b2387b98fe9bab88654db05ba9dfeadd29959cf9c44a16205e6a95d3465fbda77e6c95344a09b5b7

  • memory/884-67-0x00007FFE39980000-0x00007FFE39AED000-memory.dmp

    Filesize

    1.4MB

  • memory/884-65-0x00000000035E0000-0x00000000035F2000-memory.dmp

    Filesize

    72KB

  • memory/972-39-0x00000260CA850000-0x00000260CA872000-memory.dmp

    Filesize

    136KB

  • memory/1680-7-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1680-37-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2108-14-0x0000000000400000-0x000000000043C000-memory.dmp

    Filesize

    240KB

  • memory/2108-35-0x0000000000400000-0x000000000043C000-memory.dmp

    Filesize

    240KB

  • memory/2108-12-0x0000000000400000-0x000000000043C000-memory.dmp

    Filesize

    240KB

  • memory/2144-32-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3952-104-0x00007FFE39980000-0x00007FFE39AED000-memory.dmp

    Filesize

    1.4MB

  • memory/4972-85-0x00007FFE39980000-0x00007FFE39AED000-memory.dmp

    Filesize

    1.4MB

  • memory/5088-38-0x0000000000400000-0x000000000043C000-memory.dmp

    Filesize

    240KB

  • memory/5088-0-0x0000000000400000-0x000000000043C000-memory.dmp

    Filesize

    240KB

  • memory/5088-2-0x0000000000401000-0x0000000000417000-memory.dmp

    Filesize

    88KB