limerat | 3dff78186451d97e6c3403b885ffb148cc7130b2b787b915041c7363feb74c68

Analysis

max time kernel
131s
max time network
142s
platform
windows10_x64
resource
win10
submitted
31/07/2020, 19:07

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General

Target
TRY.exe
Size 28KB
Sample200731-b1tyqdhbex
SHA256 3dff78186451d97e6c3403b885ffb148cc7130b2b787b915041c7363feb74c68
MD5 ec828127c3d3d6037a22a729f410e079
SHA1 d39f6c1cc851cb91b5f10f0004c20aca07578fdd
SHA512 7bda81acda82a155278bae3403ab8e9f180a7785db9ee4aafeaeffc9094f23f3c9c36633b30683af408049d85b648b9beae6c4cb7ab81825b635a08c87b19ada
MD5 SHA1 SHA512

Score

10^/10

limerat rat

Malware Config

Extracted

Family

limerat

Attributes

aes_key
12345
antivm
false
c2_url
https://pastebin.com/raw/hUxcYmeR
delay
3
download_payload
false
install
true
install_name
Wservices.exe
main_folder
Temp
pin_spread
false
sub_folder
\
usb_spread
true

Signatures

LimeRAT
Simple yet powerful RAT for Windows machines written in .NET.
rat limerat

Executes dropped EXE 1 IoCs

pid	Process
3336	Wservices.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs

Web Service
T1102
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Creates scheduled task(s) 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task

T1053

pid	Process
3888	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3336	Wservices.exe
Token: SeDebugPrivilege	3336	Wservices.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3588 wrote to memory of 3888	3588	TRY.exe	68
PID 3588 wrote to memory of 3888	3588	TRY.exe	68
PID 3588 wrote to memory of 3888	3588	TRY.exe	68
PID 3588 wrote to memory of 3336	3588	TRY.exe	70
PID 3588 wrote to memory of 3336	3588	TRY.exe	70
PID 3588 wrote to memory of 3336	3588	TRY.exe	70

C:\Users\Admin\AppData\Local\Temp\TRY.exe
"C:\Users\Admin\AppData\Local\Temp\TRY.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:3588
- 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:3888
- C:\Users\Admin\AppData\Local\Temp\Wservices.exe
  "C:\Users\Admin\AppData\Local\Temp\Wservices.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:3336

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Web Service

T1102

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Web Service

T1102

Exfiltration

Impact

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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