limerat | 70f4c33eda2d8cdd793fe141489293be4ec4f70e29a55d3a4c63bac9b27d451d

Analysis

max time kernel
168s
max time network
175s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
29/01/2023, 21:30

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General

Target
70f4c33eda2d8cdd793fe141489293be4ec4f70e29a55d3a4c63bac9b27d451d.exe
Size 490KB
Sample230129-1cgp9ade26
SHA256 70f4c33eda2d8cdd793fe141489293be4ec4f70e29a55d3a4c63bac9b27d451d
MD5 d7c698bb604fa3cc4babbcc3a6c79a45
SHA1 a22e125421efcb351108e064944a4c9f10256df7
SHA512 bff352f54437900b94ea2846310a00f8bfbf3732a45522e5e91130cd45bd43cf34798126b9e3d8554266760865a700382b55b4544a12808b588af95e30a5b6ba
SSDEEP 3072:Nuk730Xshh+ED085419v6fECJ7Y8XWIMij70ozw+sJF3XY0PGk:NT730jEYIK6fpJ7Y8HMK5KZ
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

limerat rat

Malware Config

Extracted

Family

limerat

Attributes

aes_key
IRj3SceatjDfweW/qMMw7g==
antivm
true
c2_url
https://pastebin.com/raw/Jpq3By4t
delay
3
download_payload
false
install
true
install_name
Audio Realtek Driver.exe
main_folder
AppData
pin_spread
false
sub_folder
\Audio Realtek Driver\
usb_spread
false

Signatures

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

Executes dropped EXE 2 IoCs

pid	Process
2276	Audio Realtek Driver.exe
1676	Audio Realtek Driver.exe

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-1-5-21-4246620582-653642754-1174164128-1000\Control Panel\International\Geo\Nation	70f4c33eda2d8cdd793fe141489293be4ec4f70e29a55d3a4c63bac9b27d451d.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs

Web Service
T1102

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1304 set thread context of 1560	1304	70f4c33eda2d8cdd793fe141489293be4ec4f70e29a55d3a4c63bac9b27d451d.exe	82
PID 2276 set thread context of 1676	2276	Audio Realtek Driver.exe	86

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
3044	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1676	Audio Realtek Driver.exe
Token: SeDebugPrivilege	1676	Audio Realtek Driver.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 1304 wrote to memory of 1560	1304	70f4c33eda2d8cdd793fe141489293be4ec4f70e29a55d3a4c63bac9b27d451d.exe	82
PID 1304 wrote to memory of 1560	1304	70f4c33eda2d8cdd793fe141489293be4ec4f70e29a55d3a4c63bac9b27d451d.exe	82
PID 1304 wrote to memory of 1560	1304	70f4c33eda2d8cdd793fe141489293be4ec4f70e29a55d3a4c63bac9b27d451d.exe	82
PID 1304 wrote to memory of 1560	1304	70f4c33eda2d8cdd793fe141489293be4ec4f70e29a55d3a4c63bac9b27d451d.exe	82
PID 1304 wrote to memory of 1560	1304	70f4c33eda2d8cdd793fe141489293be4ec4f70e29a55d3a4c63bac9b27d451d.exe	82
PID 1304 wrote to memory of 1560	1304	70f4c33eda2d8cdd793fe141489293be4ec4f70e29a55d3a4c63bac9b27d451d.exe	82
PID 1304 wrote to memory of 1560	1304	70f4c33eda2d8cdd793fe141489293be4ec4f70e29a55d3a4c63bac9b27d451d.exe	82
PID 1560 wrote to memory of 3044	1560	70f4c33eda2d8cdd793fe141489293be4ec4f70e29a55d3a4c63bac9b27d451d.exe	83
PID 1560 wrote to memory of 3044	1560	70f4c33eda2d8cdd793fe141489293be4ec4f70e29a55d3a4c63bac9b27d451d.exe	83
PID 1560 wrote to memory of 3044	1560	70f4c33eda2d8cdd793fe141489293be4ec4f70e29a55d3a4c63bac9b27d451d.exe	83
PID 1560 wrote to memory of 2276	1560	70f4c33eda2d8cdd793fe141489293be4ec4f70e29a55d3a4c63bac9b27d451d.exe	85
PID 1560 wrote to memory of 2276	1560	70f4c33eda2d8cdd793fe141489293be4ec4f70e29a55d3a4c63bac9b27d451d.exe	85
PID 1560 wrote to memory of 2276	1560	70f4c33eda2d8cdd793fe141489293be4ec4f70e29a55d3a4c63bac9b27d451d.exe	85
PID 2276 wrote to memory of 1676	2276	Audio Realtek Driver.exe	86
PID 2276 wrote to memory of 1676	2276	Audio Realtek Driver.exe	86
PID 2276 wrote to memory of 1676	2276	Audio Realtek Driver.exe	86
PID 2276 wrote to memory of 1676	2276	Audio Realtek Driver.exe	86
PID 2276 wrote to memory of 1676	2276	Audio Realtek Driver.exe	86
PID 2276 wrote to memory of 1676	2276	Audio Realtek Driver.exe	86
PID 2276 wrote to memory of 1676	2276	Audio Realtek Driver.exe	86

C:\Users\Admin\AppData\Local\Temp\70f4c33eda2d8cdd793fe141489293be4ec4f70e29a55d3a4c63bac9b27d451d.exe
"C:\Users\Admin\AppData\Local\Temp\70f4c33eda2d8cdd793fe141489293be4ec4f70e29a55d3a4c63bac9b27d451d.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1304
- C:\Users\Admin\AppData\Local\Temp\70f4c33eda2d8cdd793fe141489293be4ec4f70e29a55d3a4c63bac9b27d451d.exe
  "C:\Users\Admin\AppData\Local\Temp\70f4c33eda2d8cdd793fe141489293be4ec4f70e29a55d3a4c63bac9b27d451d.exe"
  2⤵
  - Checks computer location settings
  - Suspicious use of WriteProcessMemory
  PID:1560
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc ONLOGON /RL HIGHEST /tn LimeRAT-Admin /tr "'C:\Users\Admin\AppData\Roaming\Audio Realtek Driver\Audio Realtek Driver.exe'"
    3⤵
    - Creates scheduled task(s)
    PID:3044
- - C:\Users\Admin\AppData\Roaming\Audio Realtek Driver\Audio Realtek Driver.exe
    "C:\Users\Admin\AppData\Roaming\Audio Realtek Driver\Audio Realtek Driver.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:2276
  - - C:\Users\Admin\AppData\Roaming\Audio Realtek Driver\Audio Realtek Driver.exe
      "C:\Users\Admin\AppData\Roaming\Audio Realtek Driver\Audio Realtek Driver.exe"
      4⤵
      Executes dropped EXE
      Suspicious use of AdjustPrivilegeToken
      PID:1676

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

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Downloads

70f4c33eda2d8cdd793fe141489293be4ec4f70e29a55d3a4c63bac9b27d451d.exe.log

Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\70f4c33eda2d8cdd793fe141489293be4ec4f70e29a55d3a4c63bac9b27d451d.exe.log
Size 226B
SHA256 7e750c904c43d27c89e55af809a679a96c0bb63fc511006ffbceffc2c7f6fb7d
MD5 916851e072fbabc4796d8916c5131092
SHA1 d48a602229a690c512d5fdaf4c8d77547a88e7a2
SHA512 07ce4c881d6c411cac0b62364377e77950797c486804fb10d00555458716e3c47b1efc0d1f37e4cc3b7e6565bb402ca01c7ea8c963f9f9ace941a6e3883d2521
MD5 SHA1 SHA512

Submit Download

Audio Realtek Driver.exe.log

Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\Audio Realtek Driver.exe.log
Size 226B
SHA256 7e750c904c43d27c89e55af809a679a96c0bb63fc511006ffbceffc2c7f6fb7d
MD5 916851e072fbabc4796d8916c5131092
SHA1 d48a602229a690c512d5fdaf4c8d77547a88e7a2
SHA512 07ce4c881d6c411cac0b62364377e77950797c486804fb10d00555458716e3c47b1efc0d1f37e4cc3b7e6565bb402ca01c7ea8c963f9f9ace941a6e3883d2521
MD5 SHA1 SHA512

Submit Download

Audio Realtek Driver.exe

Path C:\Users\Admin\AppData\Roaming\Audio Realtek Driver\Audio Realtek Driver.exe
Size 490KB
SHA256 70f4c33eda2d8cdd793fe141489293be4ec4f70e29a55d3a4c63bac9b27d451d
MD5 d7c698bb604fa3cc4babbcc3a6c79a45
SHA1 a22e125421efcb351108e064944a4c9f10256df7
SHA512 bff352f54437900b94ea2846310a00f8bfbf3732a45522e5e91130cd45bd43cf34798126b9e3d8554266760865a700382b55b4544a12808b588af95e30a5b6ba
SSDEEP 3072:Nuk730Xshh+ED085419v6fECJ7Y8XWIMij70ozw+sJF3XY0PGk:NT730jEYIK6fpJ7Y8HMK5KZ
MD5 SHA1 SHA512 SSDEEP

Submit Download

Audio Realtek Driver.exe

Path C:\Users\Admin\AppData\Roaming\Audio Realtek Driver\Audio Realtek Driver.exe
Size 490KB
SHA256 70f4c33eda2d8cdd793fe141489293be4ec4f70e29a55d3a4c63bac9b27d451d
MD5 d7c698bb604fa3cc4babbcc3a6c79a45
SHA1 a22e125421efcb351108e064944a4c9f10256df7
SHA512 bff352f54437900b94ea2846310a00f8bfbf3732a45522e5e91130cd45bd43cf34798126b9e3d8554266760865a700382b55b4544a12808b588af95e30a5b6ba
SSDEEP 3072:Nuk730Xshh+ED085419v6fECJ7Y8XWIMij70ozw+sJF3XY0PGk:NT730jEYIK6fpJ7Y8HMK5KZ
MD5 SHA1 SHA512 SSDEEP

Submit Download

Audio Realtek Driver.exe

Path C:\Users\Admin\AppData\Roaming\Audio Realtek Driver\Audio Realtek Driver.exe
Size 490KB
SHA256 70f4c33eda2d8cdd793fe141489293be4ec4f70e29a55d3a4c63bac9b27d451d
MD5 d7c698bb604fa3cc4babbcc3a6c79a45
SHA1 a22e125421efcb351108e064944a4c9f10256df7
SHA512 bff352f54437900b94ea2846310a00f8bfbf3732a45522e5e91130cd45bd43cf34798126b9e3d8554266760865a700382b55b4544a12808b588af95e30a5b6ba
SSDEEP 3072:Nuk730Xshh+ED085419v6fECJ7Y8XWIMij70ozw+sJF3XY0PGk:NT730jEYIK6fpJ7Y8HMK5KZ
MD5 SHA1 SHA512 SSDEEP

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memory/1304-132-0x00000000000B0000-0x0000000000130000-memory.dmp

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memory/1560-134-0x0000000000400000-0x000000000040C000-memory.dmp

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memory/1560-136-0x0000000001870000-0x000000000190C000-memory.dmp

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memory/1560-137-0x00000000051A0000-0x0000000005206000-memory.dmp

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memory/1560-138-0x0000000005DC0000-0x0000000006364000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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