Analysis

  • max time kernel
    150s
  • max time network
    152s
  • platform
    windows10_x64
  • resource
    win10v20210410
  • submitted
    19-04-2021 09:43

General

  • Target

    Drawings_pdf.exe

  • Size

    699KB

  • MD5

    49b0e9e03c84e8ad389c2dda6038814a

  • SHA1

    7fc64feadb22791724f55808cbf872d1d5f8456e

  • SHA256

    22e3af3f64dbc6b64b2f47400be374dcf65bc990ac06bb2e7f77dbe1f61d922d

  • SHA512

    fb26c6661999b630ba3a80b4e9414c1f25cffe4a8387e40051552c00488d108175e5e16793ecc69cde3d3e3797f807f0b1c80dc27dfcfd86dcf3187e6f5e4634

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.soonlogistics.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    admin6640!

Signatures

  • AgentTesla

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

  • AgentTesla Payload 3 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.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Drawings_pdf.exe
    "C:\Users\Admin\AppData\Local\Temp\Drawings_pdf.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3896
    • 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\Drawings_pdf.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2004
    • C:\Users\Admin\AppData\Local\Temp\Drawings_pdf.exe
      "C:\Users\Admin\AppData\Local\Temp\Drawings_pdf.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1112

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

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_v4.0_32\UsageLogs\Drawings_pdf.exe.log
    MD5

    c3cc52ccca9ff2b6fa8d267fc350ca6b

    SHA1

    a68d4028333296d222e4afd75dea36fdc98d05f3

    SHA256

    3125b6071e2d78f575a06ed7ac32a83d9262ae64d1fa81ac43e8bfc1ef157c0e

    SHA512

    b0c7b2501b1a2c559795a9d178c0bbda0e03cbdbaaa2c4330ac1202a55373fe1b742078adcfa915bd6e805565a2daa6d35d64ef7a14ffcd09069f9ea6a691cc7

  • memory/1112-125-0x0000000000400000-0x000000000044C000-memory.dmp
    Filesize

    304KB

  • memory/1112-138-0x0000000005770000-0x0000000005C6E000-memory.dmp
    Filesize

    5.0MB

  • memory/1112-126-0x0000000000446C9E-mapping.dmp
  • memory/2004-142-0x0000000007BE0000-0x0000000007BE1000-memory.dmp
    Filesize

    4KB

  • memory/2004-134-0x00000000046F0000-0x00000000046F1000-memory.dmp
    Filesize

    4KB

  • memory/2004-168-0x00000000094E0000-0x00000000094E1000-memory.dmp
    Filesize

    4KB

  • memory/2004-167-0x0000000006E93000-0x0000000006E94000-memory.dmp
    Filesize

    4KB

  • memory/2004-166-0x000000007EEF0000-0x000000007EEF1000-memory.dmp
    Filesize

    4KB

  • memory/2004-124-0x0000000000000000-mapping.dmp
  • memory/2004-165-0x0000000009320000-0x0000000009321000-memory.dmp
    Filesize

    4KB

  • memory/2004-160-0x00000000091C0000-0x00000000091C1000-memory.dmp
    Filesize

    4KB

  • memory/2004-153-0x00000000091E0000-0x0000000009213000-memory.dmp
    Filesize

    204KB

  • memory/2004-143-0x0000000007470000-0x0000000007471000-memory.dmp
    Filesize

    4KB

  • memory/2004-135-0x00000000074D0000-0x00000000074D1000-memory.dmp
    Filesize

    4KB

  • memory/2004-136-0x0000000007180000-0x0000000007181000-memory.dmp
    Filesize

    4KB

  • memory/2004-137-0x0000000007220000-0x0000000007221000-memory.dmp
    Filesize

    4KB

  • memory/2004-145-0x00000000082B0000-0x00000000082B1000-memory.dmp
    Filesize

    4KB

  • memory/2004-140-0x0000000006E90000-0x0000000006E91000-memory.dmp
    Filesize

    4KB

  • memory/2004-141-0x0000000006E92000-0x0000000006E93000-memory.dmp
    Filesize

    4KB

  • memory/2004-139-0x0000000007B70000-0x0000000007B71000-memory.dmp
    Filesize

    4KB

  • memory/2004-144-0x0000000008260000-0x0000000008261000-memory.dmp
    Filesize

    4KB

  • memory/3896-118-0x0000000005100000-0x0000000005101000-memory.dmp
    Filesize

    4KB

  • memory/3896-114-0x0000000000690000-0x0000000000691000-memory.dmp
    Filesize

    4KB

  • memory/3896-116-0x0000000005560000-0x0000000005561000-memory.dmp
    Filesize

    4KB

  • memory/3896-117-0x0000000004F80000-0x0000000004F81000-memory.dmp
    Filesize

    4KB

  • memory/3896-120-0x0000000004EE0000-0x0000000004F72000-memory.dmp
    Filesize

    584KB

  • memory/3896-119-0x0000000005020000-0x0000000005021000-memory.dmp
    Filesize

    4KB

  • memory/3896-123-0x0000000009AA0000-0x0000000009AF7000-memory.dmp
    Filesize

    348KB

  • memory/3896-122-0x0000000000EF0000-0x0000000000F7C000-memory.dmp
    Filesize

    560KB

  • memory/3896-121-0x0000000005260000-0x0000000005269000-memory.dmp
    Filesize

    36KB