Analysis

  • max time kernel
    149s
  • max time network
    136s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    06-01-2023 15:43

General

  • Target

    54e737644c21402034c863a89de9f785.exe

  • Size

    33KB

  • MD5

    54e737644c21402034c863a89de9f785

  • SHA1

    fa4aa0237c56c2f787d5eea774d03e0fd30d8405

  • SHA256

    52a19a9b1fc41e58aa0ffeda8e9711b1c424c58825b084a4a9a378854318920f

  • SHA512

    a549dc83697609441489d6dd7e8efb20fee74d17051f00e1207e3ea3f3fe394b84d5a2317a78e8ef75a5a3f9424eaf10668a93b6b3a5fa33a9f8ceea1e2b8e1a

  • SSDEEP

    768:dpHG6XbwtuEEP545NXc3g7lwYmemFjRu:dpXbwtvwuzQg7KYBYN

Score
10/10

Malware Config

Extracted

Family

limerat

Attributes
  • aes_key

    Yp3s6v9y$B?E(H+M

  • antivm

    false

  • c2_url

    https://pastebin.com/raw/hkXuRtp9

  • delay

    3

  • download_payload

    false

  • install

    true

  • install_name

    OverTheCounter.exe

  • main_folder

    Temp

  • pin_spread

    false

  • sub_folder

    \otc\

  • usb_spread

    false

Signatures

  • LimeRAT

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

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 2 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • 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.

  • Modifies system certificate store 2 TTPs 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 10 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\54e737644c21402034c863a89de9f785.exe
    "C:\Users\Admin\AppData\Local\Temp\54e737644c21402034c863a89de9f785.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:540
    • C:\Windows\SysWOW64\schtasks.exe
      schtasks /create /f /sc ONLOGON /RL HIGHEST /tn LimeRAT-Admin /tr "'C:\Users\Admin\AppData\Local\Temp\otc\OverTheCounter.exe'"
      2⤵
      • Creates scheduled task(s)
      PID:1228
    • C:\Users\Admin\AppData\Local\Temp\otc\OverTheCounter.exe
      "C:\Users\Admin\AppData\Local\Temp\otc\OverTheCounter.exe"
      2⤵
      • Executes dropped EXE
      • Modifies system certificate store
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:688

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\otc\OverTheCounter.exe

    Filesize

    33KB

    MD5

    54e737644c21402034c863a89de9f785

    SHA1

    fa4aa0237c56c2f787d5eea774d03e0fd30d8405

    SHA256

    52a19a9b1fc41e58aa0ffeda8e9711b1c424c58825b084a4a9a378854318920f

    SHA512

    a549dc83697609441489d6dd7e8efb20fee74d17051f00e1207e3ea3f3fe394b84d5a2317a78e8ef75a5a3f9424eaf10668a93b6b3a5fa33a9f8ceea1e2b8e1a

  • C:\Users\Admin\AppData\Local\Temp\otc\OverTheCounter.exe

    Filesize

    33KB

    MD5

    54e737644c21402034c863a89de9f785

    SHA1

    fa4aa0237c56c2f787d5eea774d03e0fd30d8405

    SHA256

    52a19a9b1fc41e58aa0ffeda8e9711b1c424c58825b084a4a9a378854318920f

    SHA512

    a549dc83697609441489d6dd7e8efb20fee74d17051f00e1207e3ea3f3fe394b84d5a2317a78e8ef75a5a3f9424eaf10668a93b6b3a5fa33a9f8ceea1e2b8e1a

  • \Users\Admin\AppData\Local\Temp\otc\OverTheCounter.exe

    Filesize

    33KB

    MD5

    54e737644c21402034c863a89de9f785

    SHA1

    fa4aa0237c56c2f787d5eea774d03e0fd30d8405

    SHA256

    52a19a9b1fc41e58aa0ffeda8e9711b1c424c58825b084a4a9a378854318920f

    SHA512

    a549dc83697609441489d6dd7e8efb20fee74d17051f00e1207e3ea3f3fe394b84d5a2317a78e8ef75a5a3f9424eaf10668a93b6b3a5fa33a9f8ceea1e2b8e1a

  • \Users\Admin\AppData\Local\Temp\otc\OverTheCounter.exe

    Filesize

    33KB

    MD5

    54e737644c21402034c863a89de9f785

    SHA1

    fa4aa0237c56c2f787d5eea774d03e0fd30d8405

    SHA256

    52a19a9b1fc41e58aa0ffeda8e9711b1c424c58825b084a4a9a378854318920f

    SHA512

    a549dc83697609441489d6dd7e8efb20fee74d17051f00e1207e3ea3f3fe394b84d5a2317a78e8ef75a5a3f9424eaf10668a93b6b3a5fa33a9f8ceea1e2b8e1a

  • memory/540-54-0x0000000001170000-0x000000000117E000-memory.dmp

    Filesize

    56KB

  • memory/540-56-0x0000000076171000-0x0000000076173000-memory.dmp

    Filesize

    8KB

  • memory/688-62-0x00000000012A0000-0x00000000012AE000-memory.dmp

    Filesize

    56KB