Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    01-10-2024 21:00

General

  • Target

    tmpiaoem9m3.exe

  • Size

    920KB

  • MD5

    78eff09f295aa4b3aaf36af5245efe94

  • SHA1

    dea545e8b85f2c1201f7aa3a54f643826ca8a6ed

  • SHA256

    38f275624c634801c164c2c8f3294cbeea49b47e8e8d83bda53a0bc8aa7f7106

  • SHA512

    a8b49247156aa7004206f24211054f7f37c73df06e8a85ecf843e9c44cc99a5cf29886e85ba03d89a87a1d3968322c25cdef7877ae6c5efcfa946910204ce67f

  • SSDEEP

    12288:T3TEG/N9AKPGu+MAyn6+6Slh5/2qVe2lR8XaZW4IaBAP7r9r/+ppppppppppppp7:8AnAPRo6+pPOnoR8X2W4JBA1q

Malware Config

Extracted

Family

agenttesla

Credentials

Signatures

  • AgentTesla

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

  • 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.

  • Reads WinSCP keys stored on the system 2 TTPs

    Tries to access WinSCP stored sessions.

  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • Reads user/profile data of local email clients 2 TTPs

    Email clients store some user data on disk where infostealers will often target it.

  • Reads user/profile data of web browsers 3 TTPs

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

  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • 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 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\tmpiaoem9m3.exe
    "C:\Users\Admin\AppData\Local\Temp\tmpiaoem9m3.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4920
    • 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\tmpiaoem9m3.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3460
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\zriEHRxkd.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2828
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\zriEHRxkd" /XML "C:\Users\Admin\AppData\Local\Temp\tmpC592.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:3008
    • C:\Users\Admin\AppData\Local\Temp\tmpiaoem9m3.exe
      "C:\Users\Admin\AppData\Local\Temp\tmpiaoem9m3.exe"
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2344

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

    8bc9254e58ac730fb47fb9ef3075c0db

    SHA1

    77fcab5cdab5360843eb98d4d8916797bed56975

    SHA256

    491854dcc5f331ec0b859f900bb653b984be26dacc78d3d507f5a55e6bc426ff

    SHA512

    b9bb0e60cb481ea4becfc3a3f9aef515c15ed7b38bd5441ad08c5568439f45e805a42b43e41d72cfbc1bb54139e4d28858889fe4aa41c259f1a00f10e63c6bd2

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_z14qxrlm.x4t.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\AppData\Local\Temp\tmpC592.tmp

    Filesize

    1KB

    MD5

    56289b43a3d37fc508b996e07867f891

    SHA1

    b3f498b17e51f48eb86e172accf2d0ce221785b3

    SHA256

    489a9b92ed62865e56e2f484b7427f8c337d9be2e36a3023464b0cf4c5eb389b

    SHA512

    204672f6b6fd2182ab5f99a3de0d3198b5fac4853945c6cb58c1b020edb7be082adf4890c111b4a0cf1191dc5f7b585ab3d09546733fbae5226d86fcd50bf617

  • memory/2344-86-0x0000000005F20000-0x0000000005F70000-memory.dmp

    Filesize

    320KB

  • memory/2344-43-0x0000000000400000-0x0000000000440000-memory.dmp

    Filesize

    256KB

  • memory/2828-77-0x0000000007630000-0x0000000007644000-memory.dmp

    Filesize

    80KB

  • memory/2828-76-0x0000000007620000-0x000000000762E000-memory.dmp

    Filesize

    56KB

  • memory/2828-72-0x00000000073F0000-0x000000000740A000-memory.dmp

    Filesize

    104KB

  • memory/2828-61-0x0000000070CB0000-0x0000000070CFC000-memory.dmp

    Filesize

    304KB

  • memory/2828-46-0x00000000060D0000-0x00000000060EE000-memory.dmp

    Filesize

    120KB

  • memory/2828-78-0x0000000007730000-0x000000000774A000-memory.dmp

    Filesize

    104KB

  • memory/2828-79-0x0000000007710000-0x0000000007718000-memory.dmp

    Filesize

    32KB

  • memory/3460-15-0x0000000002D30000-0x0000000002D66000-memory.dmp

    Filesize

    216KB

  • memory/3460-60-0x0000000007840000-0x00000000078E3000-memory.dmp

    Filesize

    652KB

  • memory/3460-20-0x0000000005D80000-0x0000000005DE6000-memory.dmp

    Filesize

    408KB

  • memory/3460-31-0x0000000005FE0000-0x0000000006334000-memory.dmp

    Filesize

    3.3MB

  • memory/3460-17-0x0000000005750000-0x0000000005D78000-memory.dmp

    Filesize

    6.2MB

  • memory/3460-16-0x00000000744C0000-0x0000000074C70000-memory.dmp

    Filesize

    7.7MB

  • memory/3460-32-0x00000000744C0000-0x0000000074C70000-memory.dmp

    Filesize

    7.7MB

  • memory/3460-21-0x0000000005EF0000-0x0000000005F56000-memory.dmp

    Filesize

    408KB

  • memory/3460-19-0x0000000005680000-0x00000000056A2000-memory.dmp

    Filesize

    136KB

  • memory/3460-85-0x00000000744C0000-0x0000000074C70000-memory.dmp

    Filesize

    7.7MB

  • memory/3460-75-0x0000000007B70000-0x0000000007B81000-memory.dmp

    Filesize

    68KB

  • memory/3460-74-0x0000000007BF0000-0x0000000007C86000-memory.dmp

    Filesize

    600KB

  • memory/3460-47-0x0000000006660000-0x00000000066AC000-memory.dmp

    Filesize

    304KB

  • memory/3460-59-0x0000000006C70000-0x0000000006C8E000-memory.dmp

    Filesize

    120KB

  • memory/3460-49-0x0000000070CB0000-0x0000000070CFC000-memory.dmp

    Filesize

    304KB

  • memory/3460-18-0x00000000744C0000-0x0000000074C70000-memory.dmp

    Filesize

    7.7MB

  • memory/3460-48-0x0000000006C10000-0x0000000006C42000-memory.dmp

    Filesize

    200KB

  • memory/3460-73-0x00000000079E0000-0x00000000079EA000-memory.dmp

    Filesize

    40KB

  • memory/3460-71-0x0000000007FC0000-0x000000000863A000-memory.dmp

    Filesize

    6.5MB

  • memory/4920-8-0x00000000744C0000-0x0000000074C70000-memory.dmp

    Filesize

    7.7MB

  • memory/4920-9-0x0000000004A70000-0x0000000004AF2000-memory.dmp

    Filesize

    520KB

  • memory/4920-10-0x000000000AFF0000-0x000000000B08C000-memory.dmp

    Filesize

    624KB

  • memory/4920-45-0x00000000744C0000-0x0000000074C70000-memory.dmp

    Filesize

    7.7MB

  • memory/4920-7-0x00000000744CE000-0x00000000744CF000-memory.dmp

    Filesize

    4KB

  • memory/4920-6-0x00000000056C0000-0x00000000056DE000-memory.dmp

    Filesize

    120KB

  • memory/4920-5-0x0000000005140000-0x000000000514A000-memory.dmp

    Filesize

    40KB

  • memory/4920-4-0x00000000744C0000-0x0000000074C70000-memory.dmp

    Filesize

    7.7MB

  • memory/4920-3-0x0000000005070000-0x0000000005102000-memory.dmp

    Filesize

    584KB

  • memory/4920-2-0x0000000005720000-0x0000000005CC4000-memory.dmp

    Filesize

    5.6MB

  • memory/4920-0-0x00000000744CE000-0x00000000744CF000-memory.dmp

    Filesize

    4KB

  • memory/4920-1-0x00000000005B0000-0x000000000069C000-memory.dmp

    Filesize

    944KB