Analysis

  • max time kernel
    123s
  • max time network
    112s
  • platform
    windows10_x64
  • resource
    win10v200430
  • submitted
    30-06-2020 12:21

General

  • Target

    Doc#243567298.exe

  • Size

    574KB

  • MD5

    2181ddc7631f71f3d6809ba15f89bf49

  • SHA1

    cd660cf95580790d1021d69d3e11423586938c32

  • SHA256

    bce54c823dd88b4bcb06eac2581ba7c290476786d6c76daf0f765066742e0c6f

  • SHA512

    382213d0b5d584c5db7a941c0b4b9cc1e6e9fffc017d6c8feaff33f6e3d0114d490c33cbca3d5a6193a2b70ee30c5a7c7f5e6e7556cb89cf69fb2c18338b0cfd

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.privateemail.com
  • Port:
    587
  • Username:
    dogdollars@jakartta.xyz
  • Password:
    winnerq123

Signatures

  • AgentTesla

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

  • AgentTesla Payload 2 IoCs
  • 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.

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

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

  • 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 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Doc#243567298.exe
    "C:\Users\Admin\AppData\Local\Temp\Doc#243567298.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2564
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\EaRAbigWAwa" /XML "C:\Users\Admin\AppData\Local\Temp\tmp7A66.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2316
    • C:\Users\Admin\AppData\Local\Temp\Doc#243567298.exe
      "{path}"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      PID:2888

Network

MITRE ATT&CK Matrix ATT&CK v6

Execution

Scheduled Task

1
T1053

Persistence

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Credential Access

Credentials in Files

3
T1081

Discovery

System Information Discovery

1
T1082

Collection

Data from Local System

3
T1005

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v2.0_32\UsageLogs\Doc#243567298.exe.log
    MD5

    3753b01eddc20f64178eaf3d55b5c146

    SHA1

    ca50665940eb8519e1df0c1f185fb72a271c2a66

    SHA256

    99096651b1d9b4a7562f56c8e42c06d1166f7f22a93816e2862317ada8154b37

    SHA512

    566366e651e94fab25454fb0199508cd62a64723137b32fbd5bee531110403d9194b9a4fc053740c571a69e820c1c72e48d65fc3a5410a22b6ae9d2e55508bf3

  • C:\Users\Admin\AppData\Local\Temp\tmp7A66.tmp
    MD5

    4d1c1742080b05d0fdc29542686a3765

    SHA1

    6d88f45506db54d7cb8b47464288d40ba13fe0ba

    SHA256

    1a75c2f146a56376d3c830ba4e8dbb05c58b219d894f1613121c33ae83f7c021

    SHA512

    aebf3135137a1988999b2676cf50a868fbdf46428567311a2d1f5739d766f769c54ed062a056e7d2069807ef2e3219f066e108152751c0ed6d70e78f16f5acdf

  • memory/2316-0-0x0000000000000000-mapping.dmp
  • memory/2888-2-0x0000000000400000-0x000000000044C000-memory.dmp
    Filesize

    304KB

  • memory/2888-3-0x0000000000446A1E-mapping.dmp