Analysis

  • max time kernel
    131s
  • max time network
    147s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22-12-2024 09:11

General

  • Target

    53949b99b9556d09fe8d11ec6d41d96055a9fbf2a31360f38ab18b26b6511219.exe

  • Size

    693KB

  • MD5

    32a1c8ff16fa3dde2509d9cf26f79ba0

  • SHA1

    eb8d087b2be3fb85375b77244e4a8e9ea5d6044b

  • SHA256

    53949b99b9556d09fe8d11ec6d41d96055a9fbf2a31360f38ab18b26b6511219

  • SHA512

    b628a47a0e3d5ae508093915b844c480b4fa31b7bed8ed1fbc19afecc7225228c176c0a018cf3842a92447af88cdc36e7e82e1303a1f0078c6ce3854f1836088

  • SSDEEP

    12288:C+JoKggb2iNdvpc++Ghkd1fW1xLeM2TgN/0s:CIoKgK1XpS4u+Ugi

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

Default

C2

37.0.14.197:6060

Mutex

AsyncMutex_6SI8OkPnk

Attributes
  • delay

    3

  • install

    true

  • install_file

    images.exe

  • install_folder

    %AppData%

aes.plain

Signatures

  • AsyncRat

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

  • Asyncrat family
  • Command and Scripting Interpreter: PowerShell 1 TTPs 2 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 2 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 12 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 25 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of WriteProcessMemory 43 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\53949b99b9556d09fe8d11ec6d41d96055a9fbf2a31360f38ab18b26b6511219.exe
    "C:\Users\Admin\AppData\Local\Temp\53949b99b9556d09fe8d11ec6d41d96055a9fbf2a31360f38ab18b26b6511219.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2888
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\pJITYDssoONW.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1120
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\pJITYDssoONW" /XML "C:\Users\Admin\AppData\Local\Temp\tmp2219.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:2168
    • C:\Users\Admin\AppData\Local\Temp\53949b99b9556d09fe8d11ec6d41d96055a9fbf2a31360f38ab18b26b6511219.exe
      "C:\Users\Admin\AppData\Local\Temp\53949b99b9556d09fe8d11ec6d41d96055a9fbf2a31360f38ab18b26b6511219.exe"
      2⤵
      • Checks computer location settings
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1412
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "images" /tr '"C:\Users\Admin\AppData\Roaming\images.exe"' & exit
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:1172
        • C:\Windows\SysWOW64\schtasks.exe
          schtasks /create /f /sc onlogon /rl highest /tn "images" /tr '"C:\Users\Admin\AppData\Roaming\images.exe"'
          4⤵
          • System Location Discovery: System Language Discovery
          • Scheduled Task/Job: Scheduled Task
          PID:5000
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp3515.tmp.bat""
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:1688
        • C:\Windows\SysWOW64\timeout.exe
          timeout 3
          4⤵
          • System Location Discovery: System Language Discovery
          • Delays execution with timeout.exe
          PID:2476
        • C:\Users\Admin\AppData\Roaming\images.exe
          "C:\Users\Admin\AppData\Roaming\images.exe"
          4⤵
          • Checks computer location settings
          • Executes dropped EXE
          • Suspicious use of SetThreadContext
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:4384
          • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
            "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\pJITYDssoONW.exe"
            5⤵
            • Command and Scripting Interpreter: PowerShell
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:3352
          • C:\Windows\SysWOW64\schtasks.exe
            "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\pJITYDssoONW" /XML "C:\Users\Admin\AppData\Local\Temp\tmpF509.tmp"
            5⤵
            • System Location Discovery: System Language Discovery
            • Scheduled Task/Job: Scheduled Task
            PID:4276
          • C:\Users\Admin\AppData\Roaming\images.exe
            "C:\Users\Admin\AppData\Roaming\images.exe"
            5⤵
            • Executes dropped EXE
            • System Location Discovery: System Language Discovery
            • Suspicious use of AdjustPrivilegeToken
            PID:1624

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\53949b99b9556d09fe8d11ec6d41d96055a9fbf2a31360f38ab18b26b6511219.exe.log

    Filesize

    1KB

    MD5

    e08f822522c617a40840c62e4b0fb45e

    SHA1

    ae516dca4da5234be6676d3f234c19ec55725be7

    SHA256

    bd9d5e9f7fe6fcff17d873555d4077d15f7d6cdda1183e7f7d278b735ffe1fd7

    SHA512

    894a7fb7bbc18ac6ba13378f58a7db80ad00d6080be9a66b01cae8e23e41d9d2d4cd53c1e20669356b73590c8a3ebfda4bdda3258f81240db56c4a81b7313fe4

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

    Filesize

    2KB

    MD5

    968cb9309758126772781b83adb8a28f

    SHA1

    8da30e71accf186b2ba11da1797cf67f8f78b47c

    SHA256

    92099c10776bb7e3f2a8d1b82d4d40d0c4627e4f1bf754a6e58dfd2c2e97042a

    SHA512

    4bd50732f8af4d688d95999bddfd296115d7033ddc38f86c9fb1f47fde202bffa27e9088bebcaa3064ca946af2f5c1ca6cbde49d0907f0005c7ab42874515dd3

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

    Filesize

    18KB

    MD5

    0751cab0853d18057315413237f26155

    SHA1

    1ed69658c7043e3cb92f5e751c44a043cd8676af

    SHA256

    43ba6a76592286346cbee5e8d090081d7a127321c97131e3ec8bfdbaa658421a

    SHA512

    a6b0062a27ccb53db9730e28f33b47d449bd19bd210f9af4ebbcc9057ae5f82b91ce0a255f965499babb1bf46437c9aa5717aefd066bd958c8447bf2484a242c

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ce2wfym3.h4q.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\AppData\Local\Temp\tmp2219.tmp

    Filesize

    1KB

    MD5

    edf12ea0fbe46e7e6db6d2fc4e383e8e

    SHA1

    ffe9b980c74b992dd07f9b4bc8937a72ee575169

    SHA256

    60cb1ca488b547696753b7bcf2ab9dad000a38b74ccd6b95b8f65049ad21cae1

    SHA512

    7771735565ac4619b55c63749f02d3353f416dbdddcdc712a1c40a7ed974e669a01b8bf4eb294e7f35360a34716150573a77bc810b0e593838f72256a65725a1

  • C:\Users\Admin\AppData\Local\Temp\tmp3515.tmp.bat

    Filesize

    150B

    MD5

    537c7fb8daf2d4d0304a26432d4585a9

    SHA1

    2bda25aca7b0d385cfe4a1722e8c406aeec3aa66

    SHA256

    2eec96d790b4bda404a2ea8fdb99d5e02ecb748641d53870e901c731628d3149

    SHA512

    d686f08360dca1ba47e612f17067b909908dd094ab7db6d5e2c0fcd1446828850ff4a61204268db80590f0023cddf434d8fb70a7480500dad4c8c7f73026b75f

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

    Filesize

    693KB

    MD5

    32a1c8ff16fa3dde2509d9cf26f79ba0

    SHA1

    eb8d087b2be3fb85375b77244e4a8e9ea5d6044b

    SHA256

    53949b99b9556d09fe8d11ec6d41d96055a9fbf2a31360f38ab18b26b6511219

    SHA512

    b628a47a0e3d5ae508093915b844c480b4fa31b7bed8ed1fbc19afecc7225228c176c0a018cf3842a92447af88cdc36e7e82e1303a1f0078c6ce3854f1836088

  • memory/1120-39-0x00000000066B0000-0x00000000066CE000-memory.dmp

    Filesize

    120KB

  • memory/1120-65-0x0000000074C90000-0x0000000075440000-memory.dmp

    Filesize

    7.7MB

  • memory/1120-62-0x0000000007CF0000-0x0000000007CF8000-memory.dmp

    Filesize

    32KB

  • memory/1120-61-0x0000000007D10000-0x0000000007D2A000-memory.dmp

    Filesize

    104KB

  • memory/1120-60-0x0000000007C10000-0x0000000007C24000-memory.dmp

    Filesize

    80KB

  • memory/1120-59-0x0000000007C00000-0x0000000007C0E000-memory.dmp

    Filesize

    56KB

  • memory/1120-17-0x0000000005120000-0x0000000005156000-memory.dmp

    Filesize

    216KB

  • memory/1120-18-0x0000000074C90000-0x0000000075440000-memory.dmp

    Filesize

    7.7MB

  • memory/1120-19-0x0000000005790000-0x0000000005DB8000-memory.dmp

    Filesize

    6.2MB

  • memory/1120-20-0x0000000074C90000-0x0000000075440000-memory.dmp

    Filesize

    7.7MB

  • memory/1120-58-0x0000000007BD0000-0x0000000007BE1000-memory.dmp

    Filesize

    68KB

  • memory/1120-23-0x0000000005680000-0x00000000056E6000-memory.dmp

    Filesize

    408KB

  • memory/1120-57-0x0000000007C50000-0x0000000007CE6000-memory.dmp

    Filesize

    600KB

  • memory/1120-56-0x0000000007A40000-0x0000000007A4A000-memory.dmp

    Filesize

    40KB

  • memory/1120-22-0x00000000055E0000-0x0000000005602000-memory.dmp

    Filesize

    136KB

  • memory/1120-32-0x0000000006080000-0x00000000063D4000-memory.dmp

    Filesize

    3.3MB

  • memory/1120-55-0x00000000079D0000-0x00000000079EA000-memory.dmp

    Filesize

    104KB

  • memory/1120-54-0x0000000008010000-0x000000000868A000-memory.dmp

    Filesize

    6.5MB

  • memory/1120-53-0x00000000076D0000-0x0000000007773000-memory.dmp

    Filesize

    652KB

  • memory/1120-52-0x0000000006C30000-0x0000000006C4E000-memory.dmp

    Filesize

    120KB

  • memory/1120-40-0x0000000006740000-0x000000000678C000-memory.dmp

    Filesize

    304KB

  • memory/1120-41-0x0000000006C90000-0x0000000006CC2000-memory.dmp

    Filesize

    200KB

  • memory/1120-42-0x0000000075520000-0x000000007556C000-memory.dmp

    Filesize

    304KB

  • memory/1412-25-0x0000000000400000-0x0000000000412000-memory.dmp

    Filesize

    72KB

  • memory/1412-70-0x0000000074C90000-0x0000000075440000-memory.dmp

    Filesize

    7.7MB

  • memory/1412-37-0x0000000074C90000-0x0000000075440000-memory.dmp

    Filesize

    7.7MB

  • memory/2888-9-0x0000000006FE0000-0x0000000006FEC000-memory.dmp

    Filesize

    48KB

  • memory/2888-5-0x0000000005450000-0x000000000545A000-memory.dmp

    Filesize

    40KB

  • memory/2888-38-0x0000000074C90000-0x0000000075440000-memory.dmp

    Filesize

    7.7MB

  • memory/2888-7-0x0000000074C9E000-0x0000000074C9F000-memory.dmp

    Filesize

    4KB

  • memory/2888-15-0x00000000072C0000-0x0000000007326000-memory.dmp

    Filesize

    408KB

  • memory/2888-11-0x0000000007220000-0x00000000072BC000-memory.dmp

    Filesize

    624KB

  • memory/2888-10-0x0000000007120000-0x0000000007174000-memory.dmp

    Filesize

    336KB

  • memory/2888-0-0x0000000074C9E000-0x0000000074C9F000-memory.dmp

    Filesize

    4KB

  • memory/2888-8-0x0000000074C90000-0x0000000075440000-memory.dmp

    Filesize

    7.7MB

  • memory/2888-24-0x0000000006B10000-0x0000000006B24000-memory.dmp

    Filesize

    80KB

  • memory/2888-6-0x0000000006EA0000-0x0000000006EC4000-memory.dmp

    Filesize

    144KB

  • memory/2888-4-0x0000000074C90000-0x0000000075440000-memory.dmp

    Filesize

    7.7MB

  • memory/2888-3-0x0000000005480000-0x0000000005512000-memory.dmp

    Filesize

    584KB

  • memory/2888-2-0x0000000005990000-0x0000000005F34000-memory.dmp

    Filesize

    5.6MB

  • memory/2888-1-0x0000000000990000-0x0000000000A44000-memory.dmp

    Filesize

    720KB

  • memory/3352-91-0x0000000006EC0000-0x0000000006F0C000-memory.dmp

    Filesize

    304KB

  • memory/3352-92-0x0000000075570000-0x00000000755BC000-memory.dmp

    Filesize

    304KB

  • memory/3352-102-0x0000000007900000-0x00000000079A3000-memory.dmp

    Filesize

    652KB

  • memory/3352-103-0x0000000007E60000-0x0000000007E71000-memory.dmp

    Filesize

    68KB

  • memory/3352-104-0x0000000007EB0000-0x0000000007EC4000-memory.dmp

    Filesize

    80KB