Analysis

  • max time kernel
    126s
  • max time network
    114s
  • platform
    windows10_x64
  • resource
    win10v20210410
  • submitted
    20-04-2021 20:19

General

  • Target

    Outstanding Statement-0413.exe

  • Size

    800KB

  • MD5

    d1a4c4d05ecd22dc4911c2d2a95a4e05

  • SHA1

    7566d86a447176a6a73ec6603df6a987da8681b1

  • SHA256

    08caa9af8bc3d72fc768962c2319b86c9712a2437e6ca0e7cca8fc1049536def

  • SHA512

    0d7f15d94f381ebcb14669f81d605709a37c2624559eb0b15a013f3703a626866ee74a6f71aad7980d7d4f3871ff18cec21ff3ebe48b9ee6efbaf698a93c0ea9

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    webmail.mdist.us
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    Jg#4321

Signatures

  • AgentTesla

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

  • AgentTesla Payload 3 IoCs
  • Drops file in Drivers directory 1 IoCs
  • 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.

  • 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 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Outstanding Statement-0413.exe
    "C:\Users\Admin\AppData\Local\Temp\Outstanding Statement-0413.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1704
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\fCJxIBs" /XML "C:\Users\Admin\AppData\Local\Temp\tmp9E39.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:1860
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
      "{path}"
      2⤵
      • Drops file in Drivers directory
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3700

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmp9E39.tmp

    MD5

    adf5c002b4ea14808790f3eaf4b86802

    SHA1

    9b58ac9fa323f72a5328cb0836ba732ec5ab0b4c

    SHA256

    743cb6b51da1ecea89dc2bef8a6857e9fd6181411367dcc4ba74d0040d5e3b1f

    SHA512

    bbf8f5fc8685390631e6f4d4d06168440ba1a835a07e97a4b8747719755e749cdb4cb1226871789c4c00f72cd9979269470347e1b3e6e55975d4703d61a73ff0

  • memory/1704-123-0x0000000009690000-0x0000000009752000-memory.dmp

    Filesize

    776KB

  • memory/1704-122-0x000000007F320000-0x000000007F321000-memory.dmp

    Filesize

    4KB

  • memory/1704-118-0x0000000004B30000-0x0000000004B31000-memory.dmp

    Filesize

    4KB

  • memory/1704-119-0x0000000004B90000-0x000000000508E000-memory.dmp

    Filesize

    5.0MB

  • memory/1704-124-0x00000000093A0000-0x000000000941E000-memory.dmp

    Filesize

    504KB

  • memory/1704-121-0x0000000005080000-0x0000000005085000-memory.dmp

    Filesize

    20KB

  • memory/1704-117-0x0000000004B90000-0x0000000004B91000-memory.dmp

    Filesize

    4KB

  • memory/1704-114-0x0000000000240000-0x0000000000241000-memory.dmp

    Filesize

    4KB

  • memory/1704-120-0x0000000006730000-0x0000000006731000-memory.dmp

    Filesize

    4KB

  • memory/1704-116-0x0000000005090000-0x0000000005091000-memory.dmp

    Filesize

    4KB

  • memory/1860-125-0x0000000000000000-mapping.dmp

  • memory/3700-127-0x0000000000400000-0x000000000043C000-memory.dmp

    Filesize

    240KB

  • memory/3700-128-0x00000000004377FE-mapping.dmp

  • memory/3700-133-0x0000000005590000-0x0000000005A8E000-memory.dmp

    Filesize

    5.0MB

  • memory/3700-134-0x0000000005A10000-0x0000000005A11000-memory.dmp

    Filesize

    4KB

  • memory/3700-135-0x00000000061F0000-0x00000000061F1000-memory.dmp

    Filesize

    4KB