Overview

overview

10

Static

static

10

teseter.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    306s
  • max time network
    316s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03/09/2022, 02:58

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General

  • Target

    teseter.exe

  • Size

    28KB

  • MD5

    ac9d0921f5c1959943ec2703fc5150c4

  • SHA1

    3adb1aca717b7110560fc6aa33b23aa005804ccf

  • SHA256

    0a7c472a359d87921131559fe723f2ed005bcfd8fb61807d5e4390f17cdcee95

  • SHA512

    9eafb7811252ed1d6361063889f2cbe03ba1f3acdf3de4bccc9f0021096f32195b08108d08729894a6ca4d7298605610554e0d8385ab6393b7702415459f0e03

  • SSDEEP

    384:CB+Sbj6NKyfA6h5AH9SJuwqDnJuu+GIVmvDKNrCeJE3WNgfsP3rSNdVS0Qro3lc/:4pyI6h5w9VaGyM45NSwrSNZOj

Score
10/10
limeratrat

Malware Config

Extracted

Family

limerat

Attributes
  • aes_key

    test

  • antivm

    false

  • c2_url

    https://pastebin.com/raw/Mxua3JBT

  • delay

    3

  • download_payload

    false

  • install

    true

  • install_name

    Wservices.exe

  • main_folder

    Temp

  • pin_spread

    false

  • sub_folder

    \

  • usb_spread

    false

Signatures

  • LimeRAT

    Simple yet powerful RAT for Windows machines written in .NET.

    ratlimerat
  • Executes dropped EXE 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • Drops file in Program Files directory 64 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.

    persistence
  • Suspicious behavior: EnumeratesProcesses 39 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\teseter.exe
    "C:\Users\Admin\AppData\Local\Temp\teseter.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2972
    • C:\Windows\SysWOW64\schtasks.exe
      schtasks /create /f /sc ONLOGON /RL HIGHEST /tn LimeRAT-Admin /tr "'C:\Users\Admin\AppData\Local\Temp\Wservices.exe'"
      2⤵
      • Creates scheduled task(s)
      PID:4872
    • C:\Users\Admin\AppData\Local\Temp\Wservices.exe
      "C:\Users\Admin\AppData\Local\Temp\Wservices.exe"
      2⤵
      • Executes dropped EXE
      • Drops file in Program Files directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4768

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\Wservices.exe
    Filesize

    28KB

    MD5

    ac9d0921f5c1959943ec2703fc5150c4

    SHA1

    3adb1aca717b7110560fc6aa33b23aa005804ccf

    SHA256

    0a7c472a359d87921131559fe723f2ed005bcfd8fb61807d5e4390f17cdcee95

    SHA512

    9eafb7811252ed1d6361063889f2cbe03ba1f3acdf3de4bccc9f0021096f32195b08108d08729894a6ca4d7298605610554e0d8385ab6393b7702415459f0e03

    Download Submit

  • C:\Users\Admin\AppData\Local\Temp\Wservices.exe
    Filesize

    28KB

    MD5

    ac9d0921f5c1959943ec2703fc5150c4

    SHA1

    3adb1aca717b7110560fc6aa33b23aa005804ccf

    SHA256

    0a7c472a359d87921131559fe723f2ed005bcfd8fb61807d5e4390f17cdcee95

    SHA512

    9eafb7811252ed1d6361063889f2cbe03ba1f3acdf3de4bccc9f0021096f32195b08108d08729894a6ca4d7298605610554e0d8385ab6393b7702415459f0e03

    Download Submit

  • memory/2972-132-0x0000000000CE0000-0x0000000000CEC000-memory.dmp

    Filesize

    48KB

    Download

  • memory/2972-133-0x0000000005630000-0x00000000056CC000-memory.dmp

    Filesize

    624KB

    Download

  • memory/2972-134-0x0000000005780000-0x00000000057E6000-memory.dmp

    Filesize

    408KB

    Download

  • memory/2972-135-0x0000000006360000-0x0000000006904000-memory.dmp

    Filesize

    5.6MB

    Download

  • memory/4768-140-0x00000000077C0000-0x0000000007852000-memory.dmp

    Filesize

    584KB

    Download

  • memory/4768-141-0x0000000008E70000-0x000000000939C000-memory.dmp

    Filesize

    5.2MB

    Download