Analysis

  • max time kernel
    132s
  • max time network
    123s
  • platform
    windows10_x64
  • resource
    win10-en-20211014
  • submitted
    19-10-2021 06:07

General

  • Target

    Purchase Inquiry_pdf.exe

  • Size

    588KB

  • MD5

    a2c76f1d92fa89671867f90986a86a87

  • SHA1

    856585e784b7280d136b8129553aa0ad92a8ea3d

  • SHA256

    55aed03e89170a5d23ecff52a4f5a8ea81fa921aa37d19c3d807c7b2078cf3a2

  • SHA512

    2532fb9a3a29e473d3b5d33eae522c075b5f4a9ab77f1e8937901834c0bfb9beaf1b1e0d3bb25d9fb0ffb3bfaf9b1b3c3c4dce64e2a9be1c8f309721c2d457f4

Malware Config

Extracted

Family

agenttesla

C2

https://api.telegram.org/bot2046248941:AAG5Z0PyWwtApmPaysBm59voK10ec9Rgnaw/sendDocument

Signatures

  • AgentTesla

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

  • AgentTesla Payload 3 IoCs
  • 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.

  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Purchase Inquiry_pdf.exe
    "C:\Users\Admin\AppData\Local\Temp\Purchase Inquiry_pdf.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2052
    • C:\Users\Admin\AppData\Local\Temp\Purchase Inquiry_pdf.exe
      "C:\Users\Admin\AppData\Local\Temp\Purchase Inquiry_pdf.exe"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:3808

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\Purchase Inquiry_pdf.exe.log

    MD5

    0c2899d7c6746f42d5bbe088c777f94c

    SHA1

    622f66c5f7a3c91b28a9f43ce7c6cabadbf514f1

    SHA256

    5b0b99740cadaeff7b9891136644b396941547e20cc7eea646560d0dad5a5458

    SHA512

    ab7a3409ed4b6ca00358330a3aa4ef6de7d81eb21a5e24bb629ef6a7c7c4e2a70ca3accfbc989ed6e495fdb8eb6203a26d6f2a37b2a5809af4276af375b49078

  • memory/2052-122-0x000000000D410000-0x000000000D411000-memory.dmp

    Filesize

    4KB

  • memory/2052-118-0x0000000007580000-0x0000000007581000-memory.dmp

    Filesize

    4KB

  • memory/2052-119-0x00000000074A0000-0x000000000799E000-memory.dmp

    Filesize

    5.0MB

  • memory/2052-120-0x0000000002B20000-0x0000000002B21000-memory.dmp

    Filesize

    4KB

  • memory/2052-121-0x0000000007990000-0x0000000007998000-memory.dmp

    Filesize

    32KB

  • memory/2052-115-0x00000000005F0000-0x00000000005F1000-memory.dmp

    Filesize

    4KB

  • memory/2052-123-0x000000000D4B0000-0x000000000D507000-memory.dmp

    Filesize

    348KB

  • memory/2052-117-0x00000000079A0000-0x00000000079A1000-memory.dmp

    Filesize

    4KB

  • memory/3808-124-0x0000000000400000-0x000000000043C000-memory.dmp

    Filesize

    240KB

  • memory/3808-125-0x0000000000436D2E-mapping.dmp

  • memory/3808-131-0x00000000057B0000-0x0000000005CAE000-memory.dmp

    Filesize

    5.0MB

  • memory/3808-132-0x0000000005830000-0x0000000005831000-memory.dmp

    Filesize

    4KB

  • memory/3808-133-0x00000000063A0000-0x00000000063A1000-memory.dmp

    Filesize

    4KB