Malware Analysis Report

2024-09-11 10:04

Sample ID 240328-rmhwmagc21
Target New-Client.exe
SHA256 3527e234b5df8f9f1094ea632ff826c4b40941b75d89938794aa5d8ae1dc885e
Tags
limerat rat
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK Matrix

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

3527e234b5df8f9f1094ea632ff826c4b40941b75d89938794aa5d8ae1dc885e

Threat Level: Known bad

The file New-Client.exe was found to be: Known bad.

Malicious Activity Summary

limerat rat

Limerat family

LimeRAT

Executes dropped EXE

Loads dropped DLL

Checks computer location settings

Legitimate hosting services abused for malware hosting/C2

Enumerates physical storage devices

Unsigned PE

Suspicious use of AdjustPrivilegeToken

Creates scheduled task(s)

Suspicious use of WriteProcessMemory

MITRE ATT&CK Matrix V13

Initial Access
TA0001
Execution
TA0002
Scheduled Task/Job
T1053
Persistence
TA0003
Scheduled Task/Job
T1053
Privilege Escalation
TA0004
Scheduled Task/Job
T1053
Defense Evasion
TA0005
Credential Access
TA0006
Discovery
TA0007
System Information Discovery
T1082
Query Registry
T1012
Lateral Movement
TA0008
Collection
TA0009
Exfiltration
TA0010
Command and Control
TA0011
Web Service
T1102
Impact
TA0040
Resource Development
TA0042
Reconnaissance
TA0043

Analysis: static1

Detonation Overview

Reported

2024-03-28 14:18

Signatures

Limerat family

limerat

Unsigned PE

Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-03-28 14:18

Reported

2024-03-28 14:21

Platform

win7-20240221-en

Max time kernel

147s

Max time network

148s

Command Line

"C:\Users\Admin\AppData\Local\Temp\New-Client.exe"

Signatures

LimeRAT

rat limerat

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\fasdasfdfsdfsda\fsds.exe N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\New-Client.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\New-Client.exe N/A

Legitimate hosting services abused for malware hosting/C2

Description Indicator Process Target
N/A pastebin.com N/A N/A
N/A pastebin.com N/A N/A

Enumerates physical storage devices

Creates scheduled task(s)

persistence
Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\schtasks.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Roaming\fasdasfdfsdfsda\fsds.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Roaming\fasdasfdfsdfsda\fsds.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1460 wrote to memory of 2564 N/A C:\Users\Admin\AppData\Local\Temp\New-Client.exe C:\Windows\SysWOW64\schtasks.exe
PID 1460 wrote to memory of 2564 N/A C:\Users\Admin\AppData\Local\Temp\New-Client.exe C:\Windows\SysWOW64\schtasks.exe
PID 1460 wrote to memory of 2564 N/A C:\Users\Admin\AppData\Local\Temp\New-Client.exe C:\Windows\SysWOW64\schtasks.exe
PID 1460 wrote to memory of 2564 N/A C:\Users\Admin\AppData\Local\Temp\New-Client.exe C:\Windows\SysWOW64\schtasks.exe
PID 1460 wrote to memory of 2784 N/A C:\Users\Admin\AppData\Local\Temp\New-Client.exe C:\Users\Admin\AppData\Roaming\fasdasfdfsdfsda\fsds.exe
PID 1460 wrote to memory of 2784 N/A C:\Users\Admin\AppData\Local\Temp\New-Client.exe C:\Users\Admin\AppData\Roaming\fasdasfdfsdfsda\fsds.exe
PID 1460 wrote to memory of 2784 N/A C:\Users\Admin\AppData\Local\Temp\New-Client.exe C:\Users\Admin\AppData\Roaming\fasdasfdfsdfsda\fsds.exe
PID 1460 wrote to memory of 2784 N/A C:\Users\Admin\AppData\Local\Temp\New-Client.exe C:\Users\Admin\AppData\Roaming\fasdasfdfsdfsda\fsds.exe

Processes

C:\Users\Admin\AppData\Local\Temp\New-Client.exe

"C:\Users\Admin\AppData\Local\Temp\New-Client.exe"

C:\Windows\SysWOW64\schtasks.exe

schtasks /create /f /sc ONLOGON /RL HIGHEST /tn LimeRAT-Admin /tr "'C:\Users\Admin\AppData\Roaming\fasdasfdfsdfsda\fsds.exe'"

C:\Users\Admin\AppData\Roaming\fasdasfdfsdfsda\fsds.exe

"C:\Users\Admin\AppData\Roaming\fasdasfdfsdfsda\fsds.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 pastebin.com udp
US 172.67.34.170:443 pastebin.com tcp
N/A 127.0.0.1:80 tcp
N/A 127.0.0.1:80 tcp
N/A 127.0.0.1:80 tcp
N/A 127.0.0.1:80 tcp
N/A 127.0.0.1:80 tcp
N/A 127.0.0.1:80 tcp
N/A 127.0.0.1:80 tcp
N/A 127.0.0.1:80 tcp
N/A 127.0.0.1:80 tcp
N/A 127.0.0.1:80 tcp
N/A 127.0.0.1:80 tcp
N/A 127.0.0.1:80 tcp
N/A 127.0.0.1:80 tcp
N/A 127.0.0.1:80 tcp
N/A 127.0.0.1:80 tcp
N/A 127.0.0.1:80 tcp
N/A 127.0.0.1:80 tcp
N/A 127.0.0.1:80 tcp
N/A 127.0.0.1:80 tcp
N/A 127.0.0.1:80 tcp
N/A 127.0.0.1:80 tcp
N/A 127.0.0.1:80 tcp
N/A 127.0.0.1:80 tcp
N/A 127.0.0.1:80 tcp
N/A 127.0.0.1:80 tcp
N/A 127.0.0.1:80 tcp
N/A 127.0.0.1:80 tcp
N/A 127.0.0.1:80 tcp
N/A 127.0.0.1:80 tcp
N/A 127.0.0.1:80 tcp
N/A 127.0.0.1:80 tcp
N/A 127.0.0.1:80 tcp
N/A 127.0.0.1:80 tcp
N/A 127.0.0.1:80 tcp
N/A 127.0.0.1:80 tcp
N/A 127.0.0.1:80 tcp

Files

memory/1460-0-0x0000000001370000-0x0000000001398000-memory.dmp

memory/1460-1-0x00000000745D0000-0x0000000074CBE000-memory.dmp

memory/1460-3-0x0000000004D50000-0x0000000004D90000-memory.dmp

\Users\Admin\AppData\Roaming\fasdasfdfsdfsda\fsds.exe

MD5 f000f3f61e4c9a88563bc5443911fdeb
SHA1 7c4e4e79d4d0f52ac8272e31df85b34718a18661
SHA256 3527e234b5df8f9f1094ea632ff826c4b40941b75d89938794aa5d8ae1dc885e
SHA512 4f518a1bbc2dabc39cf8427fda0ef9dd3f1a018fd5665c9dfd872e51c86122c253d721850c312f5721db448909f059b6d9cc4c97932bbf82e90d9b3f3b0a9c80

memory/2784-15-0x00000000745D0000-0x0000000074CBE000-memory.dmp

memory/1460-14-0x00000000745D0000-0x0000000074CBE000-memory.dmp

memory/2784-13-0x0000000000860000-0x0000000000888000-memory.dmp

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015

MD5 29f65ba8e88c063813cc50a4ea544e93
SHA1 05a7040d5c127e68c25d81cc51271ffb8bef3568
SHA256 1ed81fa8dfb6999a9fedc6e779138ffd99568992e22d300acd181a6d2c8de184
SHA512 e29b2e92c496245bed3372578074407e8ef8882906ce10c35b3c8deebfefe01b5fd7f3030acaa693e175f4b7aca6cd7d8d10ae1c731b09c5fa19035e005de3aa

C:\Users\Admin\AppData\Local\Temp\Tar5E5E.tmp

MD5 435a9ac180383f9fa094131b173a2f7b
SHA1 76944ea657a9db94f9a4bef38f88c46ed4166983
SHA256 67dc37ed50b8e63272b49a254a6039ee225974f1d767bb83eb1fd80e759a7c34
SHA512 1a6b277611959720a9c71114957620517ad94541302f164eb872bd322292a952409bafb8bc2ac793b16ad5f25d83f8594ccff2b7834e3c2b2b941e6fc84c009a

memory/2784-53-0x00000000745D0000-0x0000000074CBE000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-03-28 14:18

Reported

2024-03-28 14:21

Platform

win10v2004-20240226-en

Max time kernel

149s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\New-Client.exe"

Signatures

LimeRAT

rat limerat

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-275798769-4264537674-1142822080-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\New-Client.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\fasdasfdfsdfsda\fsds.exe N/A

Legitimate hosting services abused for malware hosting/C2

Description Indicator Process Target
N/A pastebin.com N/A N/A
N/A pastebin.com N/A N/A

Enumerates physical storage devices

Creates scheduled task(s)

persistence
Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\schtasks.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Roaming\fasdasfdfsdfsda\fsds.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Roaming\fasdasfdfsdfsda\fsds.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3476 wrote to memory of 3732 N/A C:\Users\Admin\AppData\Local\Temp\New-Client.exe C:\Windows\SysWOW64\schtasks.exe
PID 3476 wrote to memory of 3732 N/A C:\Users\Admin\AppData\Local\Temp\New-Client.exe C:\Windows\SysWOW64\schtasks.exe
PID 3476 wrote to memory of 3732 N/A C:\Users\Admin\AppData\Local\Temp\New-Client.exe C:\Windows\SysWOW64\schtasks.exe
PID 3476 wrote to memory of 1256 N/A C:\Users\Admin\AppData\Local\Temp\New-Client.exe C:\Users\Admin\AppData\Roaming\fasdasfdfsdfsda\fsds.exe
PID 3476 wrote to memory of 1256 N/A C:\Users\Admin\AppData\Local\Temp\New-Client.exe C:\Users\Admin\AppData\Roaming\fasdasfdfsdfsda\fsds.exe
PID 3476 wrote to memory of 1256 N/A C:\Users\Admin\AppData\Local\Temp\New-Client.exe C:\Users\Admin\AppData\Roaming\fasdasfdfsdfsda\fsds.exe

Processes

C:\Users\Admin\AppData\Local\Temp\New-Client.exe

"C:\Users\Admin\AppData\Local\Temp\New-Client.exe"

C:\Windows\SysWOW64\schtasks.exe

schtasks /create /f /sc ONLOGON /RL HIGHEST /tn LimeRAT-Admin /tr "'C:\Users\Admin\AppData\Roaming\fasdasfdfsdfsda\fsds.exe'"

C:\Users\Admin\AppData\Roaming\fasdasfdfsdfsda\fsds.exe

"C:\Users\Admin\AppData\Roaming\fasdasfdfsdfsda\fsds.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 76.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 pastebin.com udp
US 104.20.68.143:443 pastebin.com tcp
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 8.8.8.8:53 143.68.20.104.in-addr.arpa udp
N/A 127.0.0.1:80 tcp
N/A 127.0.0.1:80 tcp
N/A 127.0.0.1:80 tcp
N/A 127.0.0.1:80 tcp
N/A 127.0.0.1:80 tcp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
N/A 127.0.0.1:80 tcp
N/A 127.0.0.1:80 tcp
N/A 127.0.0.1:80 tcp
N/A 127.0.0.1:80 tcp
N/A 127.0.0.1:80 tcp
N/A 127.0.0.1:80 tcp
N/A 127.0.0.1:80 tcp
N/A 127.0.0.1:80 tcp
N/A 127.0.0.1:80 tcp
N/A 127.0.0.1:80 tcp
N/A 127.0.0.1:80 tcp
N/A 127.0.0.1:80 tcp
N/A 127.0.0.1:80 tcp
US 8.8.8.8:53 201.135.221.88.in-addr.arpa udp
N/A 127.0.0.1:80 tcp
N/A 127.0.0.1:80 tcp
N/A 127.0.0.1:80 tcp
N/A 127.0.0.1:80 tcp
N/A 127.0.0.1:80 tcp
N/A 127.0.0.1:80 tcp
N/A 127.0.0.1:80 tcp
N/A 127.0.0.1:80 tcp
N/A 127.0.0.1:80 tcp
N/A 127.0.0.1:80 tcp
N/A 127.0.0.1:80 tcp
N/A 127.0.0.1:80 tcp
N/A 127.0.0.1:80 tcp
N/A 127.0.0.1:80 tcp
N/A 127.0.0.1:80 tcp
US 8.8.8.8:53 6.173.189.20.in-addr.arpa udp
N/A 127.0.0.1:80 tcp

Files

memory/3476-0-0x0000000000960000-0x0000000000988000-memory.dmp

memory/3476-1-0x0000000005340000-0x00000000053DC000-memory.dmp

memory/3476-2-0x00000000752B0000-0x0000000075A60000-memory.dmp

memory/3476-3-0x00000000053E0000-0x0000000005446000-memory.dmp

memory/3476-4-0x0000000005530000-0x0000000005540000-memory.dmp

memory/3476-5-0x0000000006130000-0x00000000066D4000-memory.dmp

C:\Users\Admin\AppData\Roaming\fasdasfdfsdfsda\fsds.exe

MD5 f000f3f61e4c9a88563bc5443911fdeb
SHA1 7c4e4e79d4d0f52ac8272e31df85b34718a18661
SHA256 3527e234b5df8f9f1094ea632ff826c4b40941b75d89938794aa5d8ae1dc885e
SHA512 4f518a1bbc2dabc39cf8427fda0ef9dd3f1a018fd5665c9dfd872e51c86122c253d721850c312f5721db448909f059b6d9cc4c97932bbf82e90d9b3f3b0a9c80

memory/1256-16-0x00000000752B0000-0x0000000075A60000-memory.dmp

memory/3476-15-0x00000000752B0000-0x0000000075A60000-memory.dmp

memory/1256-17-0x0000000005550000-0x0000000005560000-memory.dmp

memory/1256-18-0x00000000752B0000-0x0000000075A60000-memory.dmp

memory/1256-19-0x0000000005550000-0x0000000005560000-memory.dmp