limerat | a707faf1eae81e0d6e764c40b8b4d78b902e99a93b76eacc35f46fc50047563c

Analysis

max time kernel
148s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20220901-en
resource tags

arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
submitted
26-10-2022 21:11

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General

Target

3cf91e2b31b2d84ae549124c2f56f8e1.exe
Size

28KB
MD5

3cf91e2b31b2d84ae549124c2f56f8e1
SHA1

bbe10b56b73810c1e4d3a042ef1faf054172241e
SHA256

a707faf1eae81e0d6e764c40b8b4d78b902e99a93b76eacc35f46fc50047563c
SHA512

aa2d813b4fa940af350072c59c42b3a9fd36eb6c36495c3f3a25d07bec92ba22083bd962a5c526af5f123a8ced41f83a6c4cf02662ea26e34f67e9e372cd00f8
SSDEEP

384:qB+Sbj6NKGpC6BZAH9+vkqDl8hETWavDKNrCeJE3WNgmNEoa4StmaNSPbQro3lcp:ApGo6BZw9rhE6445NbNpaDgHYj

Score

10^/10

limerat rat

Malware Config

Extracted

Family

limerat

Attributes

aes_key
123
antivm
true
c2_url
https://pastebin.com/raw/Kvy6HPa4
delay
3
download_payload
true
install
true
install_name
winlogon.exe
main_folder
Temp
payload_url
ApplictionFramework.exe
pin_spread
true
sub_folder
\
usb_spread
true

Signatures

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

Executes dropped EXE 1 IoCs

pid	Process
1424	winlogon.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-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation	3cf91e2b31b2d84ae549124c2f56f8e1.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
1916	schtasks.exe

Suspicious behavior: EnumeratesProcesses 12 IoCs

pid	Process
1424	winlogon.exe
1424	winlogon.exe
1424	winlogon.exe
1424	winlogon.exe
1424	winlogon.exe
1424	winlogon.exe
1424	winlogon.exe
1424	winlogon.exe
1424	winlogon.exe
1424	winlogon.exe
1424	winlogon.exe
1424	winlogon.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1424	winlogon.exe
Token: SeDebugPrivilege	1424	winlogon.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4780 wrote to memory of 1916	4780	3cf91e2b31b2d84ae549124c2f56f8e1.exe	86
PID 4780 wrote to memory of 1916	4780	3cf91e2b31b2d84ae549124c2f56f8e1.exe	86
PID 4780 wrote to memory of 1916	4780	3cf91e2b31b2d84ae549124c2f56f8e1.exe	86
PID 4780 wrote to memory of 1424	4780	3cf91e2b31b2d84ae549124c2f56f8e1.exe	88
PID 4780 wrote to memory of 1424	4780	3cf91e2b31b2d84ae549124c2f56f8e1.exe	88
PID 4780 wrote to memory of 1424	4780	3cf91e2b31b2d84ae549124c2f56f8e1.exe	88

C:\Users\Admin\AppData\Local\Temp\3cf91e2b31b2d84ae549124c2f56f8e1.exe
"C:\Users\Admin\AppData\Local\Temp\3cf91e2b31b2d84ae549124c2f56f8e1.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4780
- C:\Windows\SysWOW64\schtasks.exe
  schtasks /create /f /sc ONLOGON /RL HIGHEST /tn LimeRAT-Admin /tr "'C:\Users\Admin\AppData\Local\Temp\winlogon.exe'"
  2⤵
  - Creates scheduled task(s)
  PID:1916
- C:\Users\Admin\AppData\Local\Temp\winlogon.exe
  "C:\Users\Admin\AppData\Local\Temp\winlogon.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1424

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\Local\Temp\winlogon.exe

Filesize
28KB

MD5
3cf91e2b31b2d84ae549124c2f56f8e1

SHA1
bbe10b56b73810c1e4d3a042ef1faf054172241e

SHA256
a707faf1eae81e0d6e764c40b8b4d78b902e99a93b76eacc35f46fc50047563c

SHA512
aa2d813b4fa940af350072c59c42b3a9fd36eb6c36495c3f3a25d07bec92ba22083bd962a5c526af5f123a8ced41f83a6c4cf02662ea26e34f67e9e372cd00f8

Download Submit
C:\Users\Admin\AppData\Local\Temp\winlogon.exe

Filesize
28KB

MD5
3cf91e2b31b2d84ae549124c2f56f8e1

SHA1
bbe10b56b73810c1e4d3a042ef1faf054172241e

SHA256
a707faf1eae81e0d6e764c40b8b4d78b902e99a93b76eacc35f46fc50047563c

SHA512
aa2d813b4fa940af350072c59c42b3a9fd36eb6c36495c3f3a25d07bec92ba22083bd962a5c526af5f123a8ced41f83a6c4cf02662ea26e34f67e9e372cd00f8

Download Submit
memory/1424-140-0x0000000006680000-0x0000000006712000-memory.dmp

Filesize
584KB

Download
memory/4780-132-0x0000000000CB0000-0x0000000000CBC000-memory.dmp

Filesize
48KB

Download
memory/4780-133-0x0000000005610000-0x00000000056AC000-memory.dmp

Filesize
624KB

Download
memory/4780-134-0x00000000056B0000-0x0000000005716000-memory.dmp

Filesize
408KB

Download
memory/4780-135-0x00000000062C0000-0x0000000006864000-memory.dmp

Filesize
5.6MB

Download