Analysis

  • max time kernel
    124s
  • max time network
    128s
  • platform
    windows10_x64
  • resource
    win10v20210408
  • submitted
    25-07-2021 23:28

General

  • Target

    payment receipt.pdf.exe

  • Size

    863KB

  • MD5

    0353af1ae14e14bf804fb78a04ae8f42

  • SHA1

    250aa0d3f7b16d7ff122f8ad16febb9213074676

  • SHA256

    746073d0f2958ace46267fa4ed5badc249b7e3a55d76c2b230c0a8b457caf6a5

  • SHA512

    e72a7a3924b024edf190dbecf6d1466635093b9e6e366b8d283d71c8720707f989507322fb1bea3011fb4384ab69e88dddc61f1544cf0799e3bac693bc56c133

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.vivaldi.net
  • Port:
    587
  • Username:
    clintongodgracelog@vivaldi.net
  • Password:
    858540506070

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
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\payment receipt.pdf.exe
    "C:\Users\Admin\AppData\Local\Temp\payment receipt.pdf.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:3492
    • C:\Users\Admin\AppData\Local\Temp\payment receipt.pdf.exe
      "{path}"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3648

Network

MITRE ATT&CK Matrix ATT&CK v6

Credential Access

Credentials in Files

3
T1081

Collection

Data from Local System

3
T1005

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\payment receipt.pdf.exe.log
    MD5

    0c2899d7c6746f42d5bbe088c777f94c

    SHA1

    622f66c5f7a3c91b28a9f43ce7c6cabadbf514f1

    SHA256

    5b0b99740cadaeff7b9891136644b396941547e20cc7eea646560d0dad5a5458

    SHA512

    ab7a3409ed4b6ca00358330a3aa4ef6de7d81eb21a5e24bb629ef6a7c7c4e2a70ca3accfbc989ed6e495fdb8eb6203a26d6f2a37b2a5809af4276af375b49078

  • memory/3492-119-0x0000000002840000-0x0000000002841000-memory.dmp
    Filesize

    4KB

  • memory/3492-122-0x0000000005440000-0x0000000005441000-memory.dmp
    Filesize

    4KB

  • memory/3492-118-0x0000000004F00000-0x0000000004F01000-memory.dmp
    Filesize

    4KB

  • memory/3492-114-0x0000000000420000-0x0000000000421000-memory.dmp
    Filesize

    4KB

  • memory/3492-124-0x0000000007380000-0x00000000073B8000-memory.dmp
    Filesize

    224KB

  • memory/3492-121-0x0000000005390000-0x0000000005392000-memory.dmp
    Filesize

    8KB

  • memory/3492-117-0x0000000009780000-0x0000000009781000-memory.dmp
    Filesize

    4KB

  • memory/3492-123-0x00000000073F0000-0x0000000007463000-memory.dmp
    Filesize

    460KB

  • memory/3492-120-0x0000000004EF0000-0x0000000004EF1000-memory.dmp
    Filesize

    4KB

  • memory/3492-116-0x0000000004CE0000-0x0000000004D31000-memory.dmp
    Filesize

    324KB

  • memory/3648-126-0x000000000043761E-mapping.dmp
  • memory/3648-125-0x0000000000400000-0x000000000043C000-memory.dmp
    Filesize

    240KB

  • memory/3648-132-0x0000000002D90000-0x0000000002D91000-memory.dmp
    Filesize

    4KB

  • memory/3648-133-0x0000000005FB0000-0x0000000005FB1000-memory.dmp
    Filesize

    4KB

  • memory/3648-134-0x0000000006050000-0x0000000006051000-memory.dmp
    Filesize

    4KB

  • memory/3648-137-0x0000000002D91000-0x0000000002D92000-memory.dmp
    Filesize

    4KB