limerat | 138be80d2934a73273feef0972a696a756da665094e4202117919c5764ab9f6d

Analysis

max time kernel
150s
max time network
153s
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 21:30

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General

Target

138be80d2934a73273feef0972a696a756da665094e4202117919c5764ab9f6d.exe
Size

457KB
MD5

9898a1c7622bf2e37309b7ecab5d9302
SHA1

c2281997d0ea971f1a03853a4bb4e05325308c75
SHA256

138be80d2934a73273feef0972a696a756da665094e4202117919c5764ab9f6d
SHA512

9aa1d7b229be678a170b3442aa240ab5e8d5f0fb3207e91e87b884bb4be4f5c91e6a8b2e2973e310fcf0c3a3c612e498794cd0997d0f39f7565eedbcb51891a9
SSDEEP

3072:SkhoVXmqoxZLC9ezeAMkeBA401kfKAgbrEjXjzqspXiLFy5yuqX8czHQroD/ThJ5:53pC9eP1kngXGjzq6iL+ksiQSLhJ

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
5016	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:

138be80d2934a73273feef0972a696a756da665094e4202117919c5764ab9f6d.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation	138be80d2934a73273feef0972a696a756da665094e4202117919c5764ab9f6d.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
1576	schtasks.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

138be80d2934a73273feef0972a696a756da665094e4202117919c5764ab9f6d.exeAudio Realtek Driver.exe

description	pid	Process
Token: SeDebugPrivilege	2636	138be80d2934a73273feef0972a696a756da665094e4202117919c5764ab9f6d.exe
Token: SeDebugPrivilege	5016	Audio Realtek Driver.exe
Token: SeDebugPrivilege	5016	Audio Realtek Driver.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

138be80d2934a73273feef0972a696a756da665094e4202117919c5764ab9f6d.exe

description	pid	Process	procid_target
PID 2636 wrote to memory of 1576	2636	138be80d2934a73273feef0972a696a756da665094e4202117919c5764ab9f6d.exe	79
PID 2636 wrote to memory of 1576	2636	138be80d2934a73273feef0972a696a756da665094e4202117919c5764ab9f6d.exe	79
PID 2636 wrote to memory of 1576	2636	138be80d2934a73273feef0972a696a756da665094e4202117919c5764ab9f6d.exe	79
PID 2636 wrote to memory of 5016	2636	138be80d2934a73273feef0972a696a756da665094e4202117919c5764ab9f6d.exe	81
PID 2636 wrote to memory of 5016	2636	138be80d2934a73273feef0972a696a756da665094e4202117919c5764ab9f6d.exe	81
PID 2636 wrote to memory of 5016	2636	138be80d2934a73273feef0972a696a756da665094e4202117919c5764ab9f6d.exe	81

C:\Users\Admin\AppData\Local\Temp\138be80d2934a73273feef0972a696a756da665094e4202117919c5764ab9f6d.exe
"C:\Users\Admin\AppData\Local\Temp\138be80d2934a73273feef0972a696a756da665094e4202117919c5764ab9f6d.exe"
1⤵
- Checks computer location settings
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2636
- 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:1576
- 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:5016

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
457KB

MD5
9898a1c7622bf2e37309b7ecab5d9302

SHA1
c2281997d0ea971f1a03853a4bb4e05325308c75

SHA256
138be80d2934a73273feef0972a696a756da665094e4202117919c5764ab9f6d

SHA512
9aa1d7b229be678a170b3442aa240ab5e8d5f0fb3207e91e87b884bb4be4f5c91e6a8b2e2973e310fcf0c3a3c612e498794cd0997d0f39f7565eedbcb51891a9

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

Filesize
457KB

MD5
9898a1c7622bf2e37309b7ecab5d9302

SHA1
c2281997d0ea971f1a03853a4bb4e05325308c75

SHA256
138be80d2934a73273feef0972a696a756da665094e4202117919c5764ab9f6d

SHA512
9aa1d7b229be678a170b3442aa240ab5e8d5f0fb3207e91e87b884bb4be4f5c91e6a8b2e2973e310fcf0c3a3c612e498794cd0997d0f39f7565eedbcb51891a9

Download Submit
memory/1576-137-0x0000000000000000-mapping.dmp

Download
memory/2636-132-0x0000000000DF0000-0x0000000000E68000-memory.dmp

Filesize
480KB

Download
memory/2636-133-0x00000000058A0000-0x000000000593C000-memory.dmp

Filesize
624KB

Download
memory/2636-134-0x0000000005940000-0x00000000059A6000-memory.dmp

Filesize
408KB

Download
memory/2636-135-0x0000000005FD0000-0x0000000006062000-memory.dmp

Filesize
584KB

Download
memory/2636-136-0x0000000006620000-0x0000000006BC4000-memory.dmp

Filesize
5.6MB

Download
memory/5016-138-0x0000000000000000-mapping.dmp

Download