limerat | fbb2ba93880b2f923b51f528610f4df715fcb6e397b9e9bc49783d09a891df24

Analysis

max time kernel
301s
max time network
307s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
30-03-2024 19:21

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General

Target

Lecture10.exe
Size

203KB
MD5

ab33ded3d83d29d7c602e41bd9f3398b
SHA1

e2b55bb5e4ee386008b3509017ad7e9891ba770d
SHA256

fbb2ba93880b2f923b51f528610f4df715fcb6e397b9e9bc49783d09a891df24
SHA512

779789b6a959d260c4ea3ff9d03b22d98a76662234cb47553fd4f7e63743fe22399af90e8f39202a8e22e5fd5329889d2ffaf3229a19539817db3cf656110918
SSDEEP

1536:ZpnmwhSD3aIHiSxY9FNAxQKg+R0Rh77YFBVoyBEv5pW:nmwhSD3aqEtAFgx2FBuyeW

Score

10^/10

limerat rat

Malware Config

Extracted

Family

limerat

Attributes

aes_key
1111
antivm
true
c2_url
https://pastebin.com/utedD1nd
delay
3
download_payload
false
install
true
install_name
Wservices.exe
main_folder
Temp
pin_spread
false
sub_folder
\
usb_spread
true

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:

Lecture10.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	Lecture10.exe

Executes dropped EXE 1 IoCs

Processes:

Wservices.exe

pid process

1384 Wservices.exe
Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service
T1102

Processes:

flow ioc

33 pastebin.com
34 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

2228 schtasks.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

Wservices.exe

description pid process

Token: SeDebugPrivilege 1384 Wservices.exe
Token: SeDebugPrivilege 1384 Wservices.exe

pid	process
1384	Wservices.exe

flow	ioc
33	pastebin.com
34	pastebin.com

pid	process
2228	schtasks.exe

description	pid	process
Token: SeDebugPrivilege	1384	Wservices.exe
Token: SeDebugPrivilege	1384	Wservices.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

Lecture10.exe

description	pid	process	target process
PID 552 wrote to memory of 2228	552	Lecture10.exe	schtasks.exe
PID 552 wrote to memory of 2228	552	Lecture10.exe	schtasks.exe
PID 552 wrote to memory of 2228	552	Lecture10.exe	schtasks.exe
PID 552 wrote to memory of 1384	552	Lecture10.exe	Wservices.exe
PID 552 wrote to memory of 1384	552	Lecture10.exe	Wservices.exe
PID 552 wrote to memory of 1384	552	Lecture10.exe	Wservices.exe

C:\Users\Admin\AppData\Local\Temp\Lecture10.exe
"C:\Users\Admin\AppData\Local\Temp\Lecture10.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:552

C:\Windows\SysWOW64\schtasks.exe
schtasks /create /f /sc ONLOGON /RL HIGHEST /tn LimeRAT-Admin /tr "'C:\Users\Admin\AppData\Local\Temp\Wservices.exe'"
2⤵
- Creates scheduled task(s)
PID:2228

C:\Users\Admin\AppData\Local\Temp\Wservices.exe
"C:\Users\Admin\AppData\Local\Temp\Wservices.exe"
2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1384

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4136 --field-trial-handle=2180,i,12780723798465539942,12010519452607841069,262144 --variations-seed-version /prefetch:8
1⤵
PID:4324

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\Local\Temp\Wservices.exe
Filesize
203KB

MD5
ab33ded3d83d29d7c602e41bd9f3398b

SHA1
e2b55bb5e4ee386008b3509017ad7e9891ba770d

SHA256
fbb2ba93880b2f923b51f528610f4df715fcb6e397b9e9bc49783d09a891df24

SHA512
779789b6a959d260c4ea3ff9d03b22d98a76662234cb47553fd4f7e63743fe22399af90e8f39202a8e22e5fd5329889d2ffaf3229a19539817db3cf656110918

Download Submit
memory/552-3-0x0000000004D40000-0x0000000004DA6000-memory.dmp

Filesize
408KB

Download
memory/552-2-0x0000000004DC0000-0x0000000004E5C000-memory.dmp

Filesize
624KB

Download
memory/552-0-0x00000000751E0000-0x0000000075990000-memory.dmp

Filesize
7.7MB

Download
memory/552-4-0x0000000004D30000-0x0000000004D40000-memory.dmp

Filesize
64KB

Download
memory/552-5-0x0000000005A10000-0x0000000005FB4000-memory.dmp

Filesize
5.6MB

Download
memory/552-1-0x0000000000380000-0x00000000003B8000-memory.dmp

Filesize
224KB

Download
memory/552-17-0x00000000751E0000-0x0000000075990000-memory.dmp

Filesize
7.7MB

Download
memory/552-20-0x00000000751E0000-0x0000000075990000-memory.dmp

Filesize
7.7MB

Download
memory/1384-19-0x00000000751E0000-0x0000000075990000-memory.dmp

Filesize
7.7MB

Download
memory/1384-21-0x0000000004F60000-0x0000000004F70000-memory.dmp

Filesize
64KB

Download
memory/1384-22-0x00000000751E0000-0x0000000075990000-memory.dmp

Filesize
7.7MB

Download
memory/1384-23-0x0000000004F60000-0x0000000004F70000-memory.dmp

Filesize
64KB

Download