limerat | f93b734b68aec7b56f109b66824e890f136ec3074054569da3564ae692bdba47

Analysis

max time kernel
149s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
29-01-2023 21:29

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General

Target

f93b734b68aec7b56f109b66824e890f136ec3074054569da3564ae692bdba47.exe
Size

474KB
MD5

4cf98b24fc122a1bb1caba9a24b8ba2a
SHA1

ad3acaf230973173d8559e6052246c0abac095f1
SHA256

f93b734b68aec7b56f109b66824e890f136ec3074054569da3564ae692bdba47
SHA512

e515bc6eadba5eeb2db58f4b0edce880c71b5e9a70786034548202d0ced11595b5a2cd12b3ef62ed67f3fcacf0dc903f9d4281987203a9fad367c53f4acdc341
SSDEEP

3072:glJnrm/FUBQk0BOW+wFRfOmh8MkWqdqTGNP4lIFwd6KeWvWhB5HSk:gTr0+BE+wFRzhVkWnaSPd6K6hB5R

Score

10^/10

limerat rat

Malware Config

Signatures

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

Executes dropped EXE 1 IoCs

Processes:

Audio Realtek Driver.exe

pid	Process
3264	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

Processes:

f93b734b68aec7b56f109b66824e890f136ec3074054569da3564ae692bdba47.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	f93b734b68aec7b56f109b66824e890f136ec3074054569da3564ae692bdba47.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

Processes:

schtasks.exe

pid	Process
1360	schtasks.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

f93b734b68aec7b56f109b66824e890f136ec3074054569da3564ae692bdba47.exeAudio Realtek Driver.exe

description	pid	Process
Token: SeDebugPrivilege	764	f93b734b68aec7b56f109b66824e890f136ec3074054569da3564ae692bdba47.exe
Token: SeDebugPrivilege	3264	Audio Realtek Driver.exe
Token: SeDebugPrivilege	3264	Audio Realtek Driver.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

f93b734b68aec7b56f109b66824e890f136ec3074054569da3564ae692bdba47.exe

description	pid	Process	procid_target
PID 764 wrote to memory of 1360	764	f93b734b68aec7b56f109b66824e890f136ec3074054569da3564ae692bdba47.exe	80
PID 764 wrote to memory of 1360	764	f93b734b68aec7b56f109b66824e890f136ec3074054569da3564ae692bdba47.exe	80
PID 764 wrote to memory of 1360	764	f93b734b68aec7b56f109b66824e890f136ec3074054569da3564ae692bdba47.exe	80
PID 764 wrote to memory of 3264	764	f93b734b68aec7b56f109b66824e890f136ec3074054569da3564ae692bdba47.exe	82
PID 764 wrote to memory of 3264	764	f93b734b68aec7b56f109b66824e890f136ec3074054569da3564ae692bdba47.exe	82
PID 764 wrote to memory of 3264	764	f93b734b68aec7b56f109b66824e890f136ec3074054569da3564ae692bdba47.exe	82

C:\Users\Admin\AppData\Local\Temp\f93b734b68aec7b56f109b66824e890f136ec3074054569da3564ae692bdba47.exe
"C:\Users\Admin\AppData\Local\Temp\f93b734b68aec7b56f109b66824e890f136ec3074054569da3564ae692bdba47.exe"
1⤵
- Checks computer location settings
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:764
- 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'"
  2⤵
  - Creates scheduled task(s)
  PID:1360
- C:\Users\Admin\AppData\Roaming\Audio Realtek Driver\Audio Realtek Driver.exe
  "C:\Users\Admin\AppData\Roaming\Audio Realtek Driver\Audio Realtek Driver.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:3264

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\Audio Realtek Driver\Audio Realtek Driver.exe

Filesize
474KB

MD5
4cf98b24fc122a1bb1caba9a24b8ba2a

SHA1
ad3acaf230973173d8559e6052246c0abac095f1

SHA256
f93b734b68aec7b56f109b66824e890f136ec3074054569da3564ae692bdba47

SHA512
e515bc6eadba5eeb2db58f4b0edce880c71b5e9a70786034548202d0ced11595b5a2cd12b3ef62ed67f3fcacf0dc903f9d4281987203a9fad367c53f4acdc341

Download Submit
C:\Users\Admin\AppData\Roaming\Audio Realtek Driver\Audio Realtek Driver.exe

Filesize
474KB

MD5
4cf98b24fc122a1bb1caba9a24b8ba2a

SHA1
ad3acaf230973173d8559e6052246c0abac095f1

SHA256
f93b734b68aec7b56f109b66824e890f136ec3074054569da3564ae692bdba47

SHA512
e515bc6eadba5eeb2db58f4b0edce880c71b5e9a70786034548202d0ced11595b5a2cd12b3ef62ed67f3fcacf0dc903f9d4281987203a9fad367c53f4acdc341

Download Submit
memory/764-132-0x0000000000600000-0x000000000067C000-memory.dmp

Filesize
496KB

Download
memory/764-133-0x00000000050C0000-0x000000000515C000-memory.dmp

Filesize
624KB

Download
memory/764-134-0x0000000004FD0000-0x0000000005036000-memory.dmp

Filesize
408KB

Download
memory/764-135-0x0000000005800000-0x0000000005892000-memory.dmp

Filesize
584KB

Download
memory/764-136-0x0000000005E50000-0x00000000063F4000-memory.dmp

Filesize
5.6MB

Download
memory/1360-137-0x0000000000000000-mapping.dmp

Download
memory/3264-138-0x0000000000000000-mapping.dmp

Download