limerat | 3527e234b5df8f9f1094ea632ff826c4b40941b75d89938794aa5d8ae1dc885e

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
28-03-2024 14:18

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General

Target

New-Client.exe
Size

137KB
MD5

f000f3f61e4c9a88563bc5443911fdeb
SHA1

7c4e4e79d4d0f52ac8272e31df85b34718a18661
SHA256

3527e234b5df8f9f1094ea632ff826c4b40941b75d89938794aa5d8ae1dc885e
SHA512

4f518a1bbc2dabc39cf8427fda0ef9dd3f1a018fd5665c9dfd872e51c86122c253d721850c312f5721db448909f059b6d9cc4c97932bbf82e90d9b3f3b0a9c80
SSDEEP

768:opVG6Xbwt81vcW45NAepI6GNUlzLcXqo5mjXSj2X0GGmr0qZvRFIu+jfVzErx2:opFbwtsE3EeO6GNUl8rs2oBGPqZbIBI

Score

10^/10

limerat rat

Malware Config

Extracted

Family

limerat

Attributes

aes_key
tobikjenegr
antivm
false
c2_url
https://pastebin.com/raw/BjpYs2j2
delay
3
download_payload
false
install
true
install_name
fsds.exe
main_folder
AppData
pin_spread
false
sub_folder
\fasdasfdfsdfsda\
usb_spread
false

Extracted

Family

limerat

Attributes

antivm
false
c2_url
https://pastebin.com/raw/BjpYs2j2
download_payload
false
install
false
pin_spread
false
usb_spread
false

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

Processes:

New-Client.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-275798769-4264537674-1142822080-1000\Control Panel\International\Geo\Nation	New-Client.exe

Executes dropped EXE 1 IoCs

Processes:

fsds.exe

pid process

1256 fsds.exe
Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service
T1102

Processes:

flow ioc

17 pastebin.com
18 pastebin.com
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

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/Job
T1053

Processes:

schtasks.exe

pid process

3732 schtasks.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

fsds.exe

description pid process

Token: SeDebugPrivilege 1256 fsds.exe
Token: SeDebugPrivilege 1256 fsds.exe

pid	process
1256	fsds.exe

flow	ioc
17	pastebin.com
18	pastebin.com

pid	process
3732	schtasks.exe

description	pid	process
Token: SeDebugPrivilege	1256	fsds.exe
Token: SeDebugPrivilege	1256	fsds.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

New-Client.exe

description	pid	process	target process
PID 3476 wrote to memory of 3732	3476	New-Client.exe	schtasks.exe
PID 3476 wrote to memory of 3732	3476	New-Client.exe	schtasks.exe
PID 3476 wrote to memory of 3732	3476	New-Client.exe	schtasks.exe
PID 3476 wrote to memory of 1256	3476	New-Client.exe	fsds.exe
PID 3476 wrote to memory of 1256	3476	New-Client.exe	fsds.exe
PID 3476 wrote to memory of 1256	3476	New-Client.exe	fsds.exe

C:\Users\Admin\AppData\Local\Temp\New-Client.exe
"C:\Users\Admin\AppData\Local\Temp\New-Client.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3476

C:\Windows\SysWOW64\schtasks.exe
schtasks /create /f /sc ONLOGON /RL HIGHEST /tn LimeRAT-Admin /tr "'C:\Users\Admin\AppData\Roaming\fasdasfdfsdfsda\fsds.exe'"
2⤵
- Creates scheduled task(s)
PID:3732

C:\Users\Admin\AppData\Roaming\fasdasfdfsdfsda\fsds.exe
"C:\Users\Admin\AppData\Roaming\fasdasfdfsdfsda\fsds.exe"
2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1256

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Scheduled Task/Job

T1053

Persistence

Scheduled Task/Job

T1053

Privilege Escalation

Scheduled Task/Job

T1053

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Web Service

T1102

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\fasdasfdfsdfsda\fsds.exe
Filesize
137KB

MD5
f000f3f61e4c9a88563bc5443911fdeb

SHA1
7c4e4e79d4d0f52ac8272e31df85b34718a18661

SHA256
3527e234b5df8f9f1094ea632ff826c4b40941b75d89938794aa5d8ae1dc885e

SHA512
4f518a1bbc2dabc39cf8427fda0ef9dd3f1a018fd5665c9dfd872e51c86122c253d721850c312f5721db448909f059b6d9cc4c97932bbf82e90d9b3f3b0a9c80

Download Submit
memory/1256-16-0x00000000752B0000-0x0000000075A60000-memory.dmp

Filesize
7.7MB

Download
memory/1256-17-0x0000000005550000-0x0000000005560000-memory.dmp

Filesize
64KB

Download
memory/1256-18-0x00000000752B0000-0x0000000075A60000-memory.dmp

Filesize
7.7MB

Download
memory/1256-19-0x0000000005550000-0x0000000005560000-memory.dmp

Filesize
64KB

Download
memory/3476-0-0x0000000000960000-0x0000000000988000-memory.dmp

Filesize
160KB

Download
memory/3476-1-0x0000000005340000-0x00000000053DC000-memory.dmp

Filesize
624KB

Download
memory/3476-2-0x00000000752B0000-0x0000000075A60000-memory.dmp

Filesize
7.7MB

Download
memory/3476-3-0x00000000053E0000-0x0000000005446000-memory.dmp

Filesize
408KB

Download
memory/3476-4-0x0000000005530000-0x0000000005540000-memory.dmp

Filesize
64KB

Download
memory/3476-5-0x0000000006130000-0x00000000066D4000-memory.dmp

Filesize
5.6MB

Download
memory/3476-15-0x00000000752B0000-0x0000000075A60000-memory.dmp

Filesize
7.7MB

Download