Analysis

  • max time kernel
    117s
  • max time network
    118s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    15-09-2024 14:43

General

  • Target

    Trojan.MSIL.Taskun.AMA.exe

  • Size

    699KB

  • MD5

    ace395f2b26c4c2cacdac246367c2060

  • SHA1

    28a7e06e9c884a6bd19e2a72a707deddc926c8f7

  • SHA256

    c75134c43e97b75bca4ced11b721253c5774cb0a78184acdc5c55580aa07df85

  • SHA512

    38ca34874df309e5ccc849614b3800a0f487920ee3c2b6c076eb7b5717807eb510257ad07a321b455280ed12ecaa8d7ce47e847a8989d79a07d6b7aab24ce5be

  • SSDEEP

    12288:HwPjab8rnxCwK1BWng4WYEAH9Dd3Qc9cLWM9WiR6i6Qc7JYdViwt5XH:HwjabiCwwQng4tE2t2Kf+/OJ4iw5

Malware Config

Extracted

Credentials

  • Protocol:
    ftp
  • Host:
    beirutrest.com
  • Port:
    21
  • Username:
    [email protected]
  • Password:
    9yXQ39wz(uL+

Extracted

Family

agenttesla

Credentials

  • Protocol:
    ftp
  • Host:
    ftp://beirutrest.com
  • Port:
    21
  • Username:
    [email protected]
  • Password:
    9yXQ39wz(uL+

Signatures

  • AgentTesla

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

  • Credentials from Password Stores: Credentials from Web Browsers 1 TTPs

    Malicious Access or copy of Web Browser Credential store.

  • Command and Scripting Interpreter: PowerShell 1 TTPs 1 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 2 TTPs

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

  • Looks up external IP address via web service 2 IoCs

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

  • 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 3 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Trojan.MSIL.Taskun.AMA.exe
    "C:\Users\Admin\AppData\Local\Temp\Trojan.MSIL.Taskun.AMA.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4196
    • 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\Trojan.MSIL.Taskun.AMA.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4284
    • C:\Users\Admin\AppData\Local\Temp\Trojan.MSIL.Taskun.AMA.exe
      "C:\Users\Admin\AppData\Local\Temp\Trojan.MSIL.Taskun.AMA.exe"
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:560

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\Trojan.MSIL.Taskun.AMA.exe.log

    Filesize

    1KB

    MD5

    8ec831f3e3a3f77e4a7b9cd32b48384c

    SHA1

    d83f09fd87c5bd86e045873c231c14836e76a05c

    SHA256

    7667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982

    SHA512

    26bffa2406b66368bd412bf25869a792631455645992cdcade2dbc13a2e56fb546414a6a9223b94c96c38d89187add6678d4779a88b38b0c9e36be8527b213c3

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_vvvag5kx.rse.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • memory/560-11-0x0000000000400000-0x0000000000440000-memory.dmp

    Filesize

    256KB

  • memory/560-18-0x0000000074640000-0x0000000074DF0000-memory.dmp

    Filesize

    7.7MB

  • memory/560-50-0x00000000069F0000-0x0000000006A40000-memory.dmp

    Filesize

    320KB

  • memory/560-63-0x0000000074640000-0x0000000074DF0000-memory.dmp

    Filesize

    7.7MB

  • memory/560-17-0x0000000005450000-0x00000000054B6000-memory.dmp

    Filesize

    408KB

  • memory/560-14-0x0000000074640000-0x0000000074DF0000-memory.dmp

    Filesize

    7.7MB

  • memory/4196-5-0x0000000074640000-0x0000000074DF0000-memory.dmp

    Filesize

    7.7MB

  • memory/4196-9-0x0000000006EA0000-0x0000000006F22000-memory.dmp

    Filesize

    520KB

  • memory/4196-10-0x0000000009530000-0x00000000095CC000-memory.dmp

    Filesize

    624KB

  • memory/4196-8-0x0000000074640000-0x0000000074DF0000-memory.dmp

    Filesize

    7.7MB

  • memory/4196-7-0x000000007464E000-0x000000007464F000-memory.dmp

    Filesize

    4KB

  • memory/4196-15-0x0000000074640000-0x0000000074DF0000-memory.dmp

    Filesize

    7.7MB

  • memory/4196-6-0x0000000006B20000-0x0000000006B30000-memory.dmp

    Filesize

    64KB

  • memory/4196-0-0x000000007464E000-0x000000007464F000-memory.dmp

    Filesize

    4KB

  • memory/4196-4-0x0000000005250000-0x000000000525A000-memory.dmp

    Filesize

    40KB

  • memory/4196-3-0x0000000005190000-0x0000000005222000-memory.dmp

    Filesize

    584KB

  • memory/4196-2-0x0000000005890000-0x0000000005E34000-memory.dmp

    Filesize

    5.6MB

  • memory/4196-1-0x0000000000760000-0x0000000000814000-memory.dmp

    Filesize

    720KB

  • memory/4284-24-0x0000000005A20000-0x0000000005D74000-memory.dmp

    Filesize

    3.3MB

  • memory/4284-37-0x0000000007010000-0x0000000007042000-memory.dmp

    Filesize

    200KB

  • memory/4284-21-0x0000000005940000-0x00000000059A6000-memory.dmp

    Filesize

    408KB

  • memory/4284-23-0x0000000074640000-0x0000000074DF0000-memory.dmp

    Filesize

    7.7MB

  • memory/4284-30-0x0000000074640000-0x0000000074DF0000-memory.dmp

    Filesize

    7.7MB

  • memory/4284-22-0x0000000074640000-0x0000000074DF0000-memory.dmp

    Filesize

    7.7MB

  • memory/4284-35-0x0000000006020000-0x000000000603E000-memory.dmp

    Filesize

    120KB

  • memory/4284-36-0x0000000006540000-0x000000000658C000-memory.dmp

    Filesize

    304KB

  • memory/4284-38-0x00000000702A0000-0x00000000702EC000-memory.dmp

    Filesize

    304KB

  • memory/4284-48-0x00000000065F0000-0x000000000660E000-memory.dmp

    Filesize

    120KB

  • memory/4284-49-0x0000000007250000-0x00000000072F3000-memory.dmp

    Filesize

    652KB

  • memory/4284-20-0x0000000005250000-0x0000000005272000-memory.dmp

    Filesize

    136KB

  • memory/4284-19-0x0000000005310000-0x0000000005938000-memory.dmp

    Filesize

    6.2MB

  • memory/4284-52-0x0000000007340000-0x000000000735A000-memory.dmp

    Filesize

    104KB

  • memory/4284-51-0x0000000007980000-0x0000000007FFA000-memory.dmp

    Filesize

    6.5MB

  • memory/4284-53-0x00000000073B0000-0x00000000073BA000-memory.dmp

    Filesize

    40KB

  • memory/4284-54-0x00000000075C0000-0x0000000007656000-memory.dmp

    Filesize

    600KB

  • memory/4284-55-0x0000000007540000-0x0000000007551000-memory.dmp

    Filesize

    68KB

  • memory/4284-56-0x0000000007570000-0x000000000757E000-memory.dmp

    Filesize

    56KB

  • memory/4284-57-0x0000000007580000-0x0000000007594000-memory.dmp

    Filesize

    80KB

  • memory/4284-58-0x0000000007680000-0x000000000769A000-memory.dmp

    Filesize

    104KB

  • memory/4284-59-0x0000000007660000-0x0000000007668000-memory.dmp

    Filesize

    32KB

  • memory/4284-62-0x0000000074640000-0x0000000074DF0000-memory.dmp

    Filesize

    7.7MB

  • memory/4284-16-0x00000000026F0000-0x0000000002726000-memory.dmp

    Filesize

    216KB