Analysis

  • max time kernel
    67s
  • max time network
    53s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240419-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29-04-2024 09:42

General

  • Target

    Ref227395588_pdf.scr

  • Size

    505KB

  • MD5

    88db09b12a478cac87ed465252c6c8f7

  • SHA1

    0e3acd2b568bd58fcfd2e914eff2c982deb55258

  • SHA256

    0f0b721073a35fe3e6b37d75582704acd5bdc1b3d71343e74d6fec59ac932deb

  • SHA512

    7d228d662e3271920094e345d36597c2e6c880d12fc3cef8c3f1206711a0b49f93d2275b5527d8ce88c1e3772d0b011161d1bd16688cb9db28471a75b949ab67

  • SSDEEP

    6144:+Z6ySmRH93qXyS8KevIl/8/vpwO4XMGdKf4xU0PrH7KjnvQWTk85KqZIMHYJqE4E:RySuRbpGv64vPrHmnkb+NHYqXZ4fa

Malware Config

Extracted

Family

agenttesla

Credentials

Signatures

  • AgentTesla

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

  • 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
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Ref227395588_pdf.scr
    "C:\Users\Admin\AppData\Local\Temp\Ref227395588_pdf.scr" /S
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:3752
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\Powershell.exe
      "Powershell.exe" 'C:\Users\Admin\AppData\Local\Temp\Ref227395588_pdf.scr' 'C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\command-line.exe'
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2296
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      PID:1432

Network

MITRE ATT&CK Matrix ATT&CK v13

Credential Access

Unsecured Credentials

2
T1552

Credentials In Files

2
T1552.001

Collection

Data from Local System

2
T1005

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_axoseb4r.rkn.ps1
    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • memory/1432-39-0x0000000006EB0000-0x0000000006F00000-memory.dmp
    Filesize

    320KB

  • memory/1432-38-0x0000000005590000-0x00000000055A0000-memory.dmp
    Filesize

    64KB

  • memory/1432-37-0x0000000074740000-0x0000000074EF0000-memory.dmp
    Filesize

    7.7MB

  • memory/1432-31-0x0000000005590000-0x00000000055A0000-memory.dmp
    Filesize

    64KB

  • memory/1432-30-0x0000000074740000-0x0000000074EF0000-memory.dmp
    Filesize

    7.7MB

  • memory/1432-27-0x0000000000400000-0x0000000000442000-memory.dmp
    Filesize

    264KB

  • memory/2296-29-0x00000000066E0000-0x000000000672C000-memory.dmp
    Filesize

    304KB

  • memory/2296-28-0x00000000066A0000-0x00000000066BE000-memory.dmp
    Filesize

    120KB

  • memory/2296-11-0x0000000002D20000-0x0000000002D30000-memory.dmp
    Filesize

    64KB

  • memory/2296-10-0x0000000002D20000-0x0000000002D30000-memory.dmp
    Filesize

    64KB

  • memory/2296-8-0x0000000002D70000-0x0000000002DA6000-memory.dmp
    Filesize

    216KB

  • memory/2296-12-0x0000000005780000-0x0000000005DA8000-memory.dmp
    Filesize

    6.2MB

  • memory/2296-13-0x0000000005F20000-0x0000000005F42000-memory.dmp
    Filesize

    136KB

  • memory/2296-14-0x0000000005FC0000-0x0000000006026000-memory.dmp
    Filesize

    408KB

  • memory/2296-15-0x0000000006030000-0x0000000006096000-memory.dmp
    Filesize

    408KB

  • memory/2296-36-0x0000000074740000-0x0000000074EF0000-memory.dmp
    Filesize

    7.7MB

  • memory/2296-25-0x00000000061A0000-0x00000000064F4000-memory.dmp
    Filesize

    3.3MB

  • memory/2296-9-0x0000000074740000-0x0000000074EF0000-memory.dmp
    Filesize

    7.7MB

  • memory/3752-26-0x0000000004F70000-0x0000000004F7A000-memory.dmp
    Filesize

    40KB

  • memory/3752-6-0x00000000050B0000-0x0000000005106000-memory.dmp
    Filesize

    344KB

  • memory/3752-0-0x0000000000410000-0x0000000000494000-memory.dmp
    Filesize

    528KB

  • memory/3752-5-0x0000000004EF0000-0x0000000004EFA000-memory.dmp
    Filesize

    40KB

  • memory/3752-4-0x00000000050A0000-0x00000000050B0000-memory.dmp
    Filesize

    64KB

  • memory/3752-33-0x0000000074740000-0x0000000074EF0000-memory.dmp
    Filesize

    7.7MB

  • memory/3752-7-0x00000000051B0000-0x000000000524C000-memory.dmp
    Filesize

    624KB

  • memory/3752-3-0x0000000004E40000-0x0000000004ED2000-memory.dmp
    Filesize

    584KB

  • memory/3752-2-0x0000000005310000-0x00000000058B4000-memory.dmp
    Filesize

    5.6MB

  • memory/3752-1-0x0000000074740000-0x0000000074EF0000-memory.dmp
    Filesize

    7.7MB