Analysis

  • max time kernel
    120s
  • max time network
    122s
  • platform
    windows10_x64
  • resource
    win10
  • submitted
    13-07-2020 06:45

General

  • Target

    4254a226af51ddbc9caacab0bf9087c3.exe

  • Size

    961KB

  • MD5

    4254a226af51ddbc9caacab0bf9087c3

  • SHA1

    19549f9058eda2e6c7b7b45cd255b7469c596da5

  • SHA256

    be8e472cbf953529be97d126d5fafebe1ad6dc69a8279258307b4a24770e131d

  • SHA512

    4354d55fea9c89ac6952509474b01284909a4437a98106ecf537034534a033e1c059a6d598c06068e3881c20a8300a6ecc8629fd1a83a43945e0f5feb149ba7c

Malware Config

Signatures

  • AgentTesla

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

  • AgentTesla Payload 3 IoCs
  • UPX packed file 3 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • 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.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious behavior: RenamesItself 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\4254a226af51ddbc9caacab0bf9087c3.exe
    "C:\Users\Admin\AppData\Local\Temp\4254a226af51ddbc9caacab0bf9087c3.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:2880
    • C:\Users\Admin\AppData\Local\Temp\4254a226af51ddbc9caacab0bf9087c3.exe
      "C:\Users\Admin\AppData\Local\Temp\4254a226af51ddbc9caacab0bf9087c3.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: RenamesItself
      • Suspicious use of AdjustPrivilegeToken
      PID:3852

Network

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

Modify Registry

1
T1112

Credential Access

Credentials in Files

3
T1081

Collection

Data from Local System

3
T1005

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/3852-0-0x0000000000400000-0x00000000004AC000-memory.dmp
    Filesize

    688KB

  • memory/3852-1-0x00000000004AAC70-mapping.dmp
  • memory/3852-2-0x0000000000400000-0x00000000004AC000-memory.dmp
    Filesize

    688KB

  • memory/3852-3-0x0000000000400000-0x00000000004AC000-memory.dmp
    Filesize

    688KB

  • memory/3852-4-0x00000000021D0000-0x0000000002220000-memory.dmp
    Filesize

    320KB