Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    21/05/2024, 01:47

General

  • Target

    fcaaf8296552e9a4bb23f21e2c88801c3783a163626b44b6cef6e17bbde07bf0.exe

  • Size

    731KB

  • MD5

    81cb8ea8d9b46383fcb2a1a46e8b88bc

  • SHA1

    9eb657a5d0836dbc323fc3c129e133c14f99d7d1

  • SHA256

    fcaaf8296552e9a4bb23f21e2c88801c3783a163626b44b6cef6e17bbde07bf0

  • SHA512

    8620f2376ca0ae293e9eebb8335e2fe63cf420ddfe00de4f0532424e816ced1e64eef314c02f4f74b9cb4f82a86f543dc435dcb92e6ad2d3dad949e5a258c705

  • SSDEEP

    12288:bYWET/mr9KfW+G84wBj5J3MvgHUgwszbpy+uPnO/FdPa4g+m/bb821RMSQkR:bYWtjV+J8oHUgwszc+uPaPnO/bbJJ

Malware Config

Extracted

Family

agenttesla

Credentials

Signatures

  • AgentTesla

    Agent Tesla is a remote access tool (RAT) written in visual basic.

  • Detect packed .NET executables. Mostly AgentTeslaV4. 1 IoCs
  • Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers. 1 IoCs
  • Detects executables referencing Windows vault credential objects. Observed in infostealers 1 IoCs
  • Detects executables referencing many confidential data stores found in browsers, mail clients, cryptocurreny wallets, etc. Observed in information stealers 1 IoCs
  • Detects executables referencing many email and collaboration clients. Observed in information stealers 1 IoCs
  • Detects executables referencing many file transfer clients. Observed in information stealers 1 IoCs
  • 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 1 IoCs

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

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 1 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 13 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\fcaaf8296552e9a4bb23f21e2c88801c3783a163626b44b6cef6e17bbde07bf0.exe
    "C:\Users\Admin\AppData\Local\Temp\fcaaf8296552e9a4bb23f21e2c88801c3783a163626b44b6cef6e17bbde07bf0.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:388
    • 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\fcaaf8296552e9a4bb23f21e2c88801c3783a163626b44b6cef6e17bbde07bf0.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3300
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\NNSwwLIbU.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4492
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\NNSwwLIbU" /XML "C:\Users\Admin\AppData\Local\Temp\tmp9BC3.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:376
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2720

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        • 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

          98fd6625566d064b692d6d6dd11845bc

          SHA1

          db962f7cd4840678282852fb89e721ca90c99c20

          SHA256

          8e2a91cb375bde8322970024fffa1b3a28de04c9b6f83e8f276ba39ca56068c6

          SHA512

          74b1716451e9f41f19ed172d1726e0a424f8307f13d8d541d3cf76b6b5c55d02123db84e03eafcf786959f0476bb5e45c423c7faeff17babdad7a263c7e925a5

        • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_iirx4zyv.lpn.ps1

          Filesize

          60B

          MD5

          d17fe0a3f47be24a6453e9ef58c94641

          SHA1

          6ab83620379fc69f80c0242105ddffd7d98d5d9d

          SHA256

          96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

          SHA512

          5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

        • C:\Users\Admin\AppData\Local\Temp\tmp9BC3.tmp

          Filesize

          1KB

          MD5

          8bcdc5897ba924f7202f64fa169d8669

          SHA1

          2884cf0bdbcd6c561fe4588ae3651f80e54122fc

          SHA256

          c535ff915434338fe54301ea6718270b199df00c260058c679e05ac81453ffba

          SHA512

          13bb66b299eb894c81886c192d9157637a3a73b3f2afd2782ce8aff9fbf8c2b50671babadde341a528d5d51df9c2d7988c97aef4df1e70cec0d9d64d0b318f49

        • memory/388-10-0x000000000AF00000-0x000000000AF9C000-memory.dmp

          Filesize

          624KB

        • memory/388-11-0x000000007484E000-0x000000007484F000-memory.dmp

          Filesize

          4KB

        • memory/388-6-0x00000000051F0000-0x0000000005212000-memory.dmp

          Filesize

          136KB

        • memory/388-7-0x0000000005370000-0x000000000537C000-memory.dmp

          Filesize

          48KB

        • memory/388-8-0x00000000048F0000-0x0000000004900000-memory.dmp

          Filesize

          64KB

        • memory/388-9-0x0000000006200000-0x0000000006284000-memory.dmp

          Filesize

          528KB

        • memory/388-0-0x000000007484E000-0x000000007484F000-memory.dmp

          Filesize

          4KB

        • memory/388-5-0x0000000074840000-0x0000000074FF0000-memory.dmp

          Filesize

          7.7MB

        • memory/388-4-0x0000000004F00000-0x0000000004F0A000-memory.dmp

          Filesize

          40KB

        • memory/388-17-0x0000000074840000-0x0000000074FF0000-memory.dmp

          Filesize

          7.7MB

        • memory/388-3-0x0000000004F40000-0x0000000004FD2000-memory.dmp

          Filesize

          584KB

        • memory/388-1-0x0000000000440000-0x00000000004FA000-memory.dmp

          Filesize

          744KB

        • memory/388-31-0x0000000074840000-0x0000000074FF0000-memory.dmp

          Filesize

          7.7MB

        • memory/388-2-0x0000000005450000-0x00000000059F4000-memory.dmp

          Filesize

          5.6MB

        • memory/2720-81-0x0000000005EC0000-0x0000000005F10000-memory.dmp

          Filesize

          320KB

        • memory/2720-24-0x0000000000400000-0x0000000000442000-memory.dmp

          Filesize

          264KB

        • memory/3300-25-0x0000000005B90000-0x0000000005BF6000-memory.dmp

          Filesize

          408KB

        • memory/3300-77-0x00000000075A0000-0x00000000075BA000-memory.dmp

          Filesize

          104KB

        • memory/3300-29-0x0000000005CE0000-0x0000000006034000-memory.dmp

          Filesize

          3.3MB

        • memory/3300-26-0x0000000005C70000-0x0000000005CD6000-memory.dmp

          Filesize

          408KB

        • memory/3300-23-0x00000000054B0000-0x00000000054D2000-memory.dmp

          Filesize

          136KB

        • memory/3300-91-0x0000000074840000-0x0000000074FF0000-memory.dmp

          Filesize

          7.7MB

        • memory/3300-16-0x0000000002960000-0x0000000002996000-memory.dmp

          Filesize

          216KB

        • memory/3300-20-0x0000000074840000-0x0000000074FF0000-memory.dmp

          Filesize

          7.7MB

        • memory/3300-50-0x0000000006260000-0x000000000627E000-memory.dmp

          Filesize

          120KB

        • memory/3300-51-0x00000000062F0000-0x000000000633C000-memory.dmp

          Filesize

          304KB

        • memory/3300-54-0x0000000070F10000-0x0000000070F5C000-memory.dmp

          Filesize

          304KB

        • memory/3300-53-0x0000000007230000-0x0000000007262000-memory.dmp

          Filesize

          200KB

        • memory/3300-64-0x00000000071F0000-0x000000000720E000-memory.dmp

          Filesize

          120KB

        • memory/3300-65-0x0000000007470000-0x0000000007513000-memory.dmp

          Filesize

          652KB

        • memory/3300-18-0x00000000054F0000-0x0000000005B18000-memory.dmp

          Filesize

          6.2MB

        • memory/3300-85-0x00000000078C0000-0x00000000078C8000-memory.dmp

          Filesize

          32KB

        • memory/3300-76-0x0000000007BF0000-0x000000000826A000-memory.dmp

          Filesize

          6.5MB

        • memory/3300-84-0x00000000078E0000-0x00000000078FA000-memory.dmp

          Filesize

          104KB

        • memory/3300-79-0x0000000007820000-0x00000000078B6000-memory.dmp

          Filesize

          600KB

        • memory/3300-80-0x00000000077A0000-0x00000000077B1000-memory.dmp

          Filesize

          68KB

        • memory/3300-19-0x0000000074840000-0x0000000074FF0000-memory.dmp

          Filesize

          7.7MB

        • memory/3300-82-0x00000000077D0000-0x00000000077DE000-memory.dmp

          Filesize

          56KB

        • memory/4492-83-0x0000000007790000-0x00000000077A4000-memory.dmp

          Filesize

          80KB

        • memory/4492-78-0x00000000075C0000-0x00000000075CA000-memory.dmp

          Filesize

          40KB

        • memory/4492-27-0x0000000074840000-0x0000000074FF0000-memory.dmp

          Filesize

          7.7MB

        • memory/4492-66-0x0000000070F10000-0x0000000070F5C000-memory.dmp

          Filesize

          304KB

        • memory/4492-92-0x0000000074840000-0x0000000074FF0000-memory.dmp

          Filesize

          7.7MB

        • memory/4492-22-0x0000000074840000-0x0000000074FF0000-memory.dmp

          Filesize

          7.7MB

        • memory/4492-30-0x0000000074840000-0x0000000074FF0000-memory.dmp

          Filesize

          7.7MB