limerat | 2cbf63527a0c56cf1cd265f78c2886af195b7635c8ff02c0bb02fc20f2cc1c8d

Analysis

max time kernel
150s
max time network
139s
platform
windows10-2004_x64
resource
win10v2004-20230220-en
resource tags

arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
submitted
16-03-2023 20:26

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General

Target

199ecae9fa74c42c5dc46548596bc8bb.exe
Size

99KB
MD5

199ecae9fa74c42c5dc46548596bc8bb
SHA1

a62a99b8ade6b1ce411aaa7a8d3b7c34ce6e285a
SHA256

2cbf63527a0c56cf1cd265f78c2886af195b7635c8ff02c0bb02fc20f2cc1c8d
SHA512

3d522d67e624be389c0b8be227c853a7127075fa2b2e38d2457c9d4a6a287122fa9eb466497f3ef6d3bd5f7430654d7b4e4abe4bbcc244e587027f3645d1b924
SSDEEP

1536:OF4WWMJ7J+GMrFmCxuNCTwChaKExEbbaaYoOgGK:84W/Wbth5bbTmgGK

Score

10^/10

limerat rat

Malware Config

Signatures

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

Checks computer location settings 2 TTPs 1 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\Control Panel\International\Geo\Nation	199ecae9fa74c42c5dc46548596bc8bb.exe

Executes dropped EXE 1 IoCs

pid	Process
1660	JavaUpdate.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
4756	schtasks.exe

Suspicious behavior: EnumeratesProcesses 22 IoCs

pid	Process
1660	JavaUpdate.exe
1660	JavaUpdate.exe
1660	JavaUpdate.exe
1660	JavaUpdate.exe
1660	JavaUpdate.exe
1660	JavaUpdate.exe
1660	JavaUpdate.exe
1660	JavaUpdate.exe
1660	JavaUpdate.exe
1660	JavaUpdate.exe
1660	JavaUpdate.exe
1660	JavaUpdate.exe
1660	JavaUpdate.exe
1660	JavaUpdate.exe
1660	JavaUpdate.exe
1660	JavaUpdate.exe
1660	JavaUpdate.exe
1660	JavaUpdate.exe
1660	JavaUpdate.exe
1660	JavaUpdate.exe
1660	JavaUpdate.exe
1660	JavaUpdate.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1660	JavaUpdate.exe
Token: SeDebugPrivilege	1660	JavaUpdate.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4912 wrote to memory of 4756	4912	199ecae9fa74c42c5dc46548596bc8bb.exe	89
PID 4912 wrote to memory of 4756	4912	199ecae9fa74c42c5dc46548596bc8bb.exe	89
PID 4912 wrote to memory of 4756	4912	199ecae9fa74c42c5dc46548596bc8bb.exe	89
PID 4912 wrote to memory of 1660	4912	199ecae9fa74c42c5dc46548596bc8bb.exe	91
PID 4912 wrote to memory of 1660	4912	199ecae9fa74c42c5dc46548596bc8bb.exe	91
PID 4912 wrote to memory of 1660	4912	199ecae9fa74c42c5dc46548596bc8bb.exe	91

C:\Users\Admin\AppData\Local\Temp\199ecae9fa74c42c5dc46548596bc8bb.exe
"C:\Users\Admin\AppData\Local\Temp\199ecae9fa74c42c5dc46548596bc8bb.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4912
- C:\Windows\SysWOW64\schtasks.exe
  schtasks /create /f /sc ONLOGON /RL HIGHEST /tn LimeRAT-Admin /tr "'C:\Users\Admin\AppData\Roaming\JavaUpdate\JavaUpdate.exe'"
  2⤵
  - Creates scheduled task(s)
  PID:4756
- C:\Users\Admin\AppData\Roaming\JavaUpdate\JavaUpdate.exe
  "C:\Users\Admin\AppData\Roaming\JavaUpdate\JavaUpdate.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1660

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

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Web Service

T1102

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\JavaUpdate\JavaUpdate.exe

Filesize
99KB

MD5
199ecae9fa74c42c5dc46548596bc8bb

SHA1
a62a99b8ade6b1ce411aaa7a8d3b7c34ce6e285a

SHA256
2cbf63527a0c56cf1cd265f78c2886af195b7635c8ff02c0bb02fc20f2cc1c8d

SHA512
3d522d67e624be389c0b8be227c853a7127075fa2b2e38d2457c9d4a6a287122fa9eb466497f3ef6d3bd5f7430654d7b4e4abe4bbcc244e587027f3645d1b924

Download Submit
C:\Users\Admin\AppData\Roaming\JavaUpdate\JavaUpdate.exe

Filesize
99KB

MD5
199ecae9fa74c42c5dc46548596bc8bb

SHA1
a62a99b8ade6b1ce411aaa7a8d3b7c34ce6e285a

SHA256
2cbf63527a0c56cf1cd265f78c2886af195b7635c8ff02c0bb02fc20f2cc1c8d

SHA512
3d522d67e624be389c0b8be227c853a7127075fa2b2e38d2457c9d4a6a287122fa9eb466497f3ef6d3bd5f7430654d7b4e4abe4bbcc244e587027f3645d1b924

Download Submit
C:\Users\Admin\AppData\Roaming\JavaUpdate\JavaUpdate.exe

Filesize
99KB

MD5
199ecae9fa74c42c5dc46548596bc8bb

SHA1
a62a99b8ade6b1ce411aaa7a8d3b7c34ce6e285a

SHA256
2cbf63527a0c56cf1cd265f78c2886af195b7635c8ff02c0bb02fc20f2cc1c8d

SHA512
3d522d67e624be389c0b8be227c853a7127075fa2b2e38d2457c9d4a6a287122fa9eb466497f3ef6d3bd5f7430654d7b4e4abe4bbcc244e587027f3645d1b924

Download Submit
memory/1660-148-0x00000000056A0000-0x00000000056B0000-memory.dmp

Filesize
64KB

Download
memory/1660-149-0x00000000056A0000-0x00000000056B0000-memory.dmp

Filesize
64KB

Download
memory/4912-133-0x0000000000DD0000-0x0000000000DEE000-memory.dmp

Filesize
120KB

Download
memory/4912-134-0x0000000005720000-0x0000000005786000-memory.dmp

Filesize
408KB

Download
memory/4912-135-0x00000000058F0000-0x000000000598C000-memory.dmp

Filesize
624KB

Download
memory/4912-136-0x0000000005990000-0x0000000005A22000-memory.dmp

Filesize
584KB

Download
memory/4912-137-0x00000000057E0000-0x00000000057F0000-memory.dmp

Filesize
64KB

Download
memory/4912-138-0x00000000064E0000-0x0000000006A84000-memory.dmp

Filesize
5.6MB

Download