Malware Analysis Report

2024-09-11 09:57

Sample ID 240523-mmnpnadc9w
Target a7b1c2a715bb2f2a6358825f341bcd9e3db00164f44afae1a1e8538ebfdf3a9f.exe
SHA256 a7b1c2a715bb2f2a6358825f341bcd9e3db00164f44afae1a1e8538ebfdf3a9f
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

a7b1c2a715bb2f2a6358825f341bcd9e3db00164f44afae1a1e8538ebfdf3a9f

Threat Level: Known bad

The file a7b1c2a715bb2f2a6358825f341bcd9e3db00164f44afae1a1e8538ebfdf3a9f.exe was found to be: Known bad.

Malicious Activity Summary

limerat rat

Limerat family

LimeRAT

Checks computer location settings

Executes dropped EXE

Loads dropped DLL

Legitimate hosting services abused for malware hosting/C2

Enumerates physical storage devices

Unsigned PE

Creates scheduled task(s)

Suspicious use of AdjustPrivilegeToken

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

2024-05-23 10:35

Signatures

Limerat family

limerat

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-05-23 10:35

Reported

2024-05-23 10:37

Platform

win7-20240221-en

Max time kernel

147s

Max time network

155s

Command Line

"C:\Users\Admin\AppData\Local\Temp\a7b1c2a715bb2f2a6358825f341bcd9e3db00164f44afae1a1e8538ebfdf3a9f.exe"

Signatures

LimeRAT

rat limerat

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\System\Plugin.exe N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\a7b1c2a715bb2f2a6358825f341bcd9e3db00164f44afae1a1e8538ebfdf3a9f.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\a7b1c2a715bb2f2a6358825f341bcd9e3db00164f44afae1a1e8538ebfdf3a9f.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
N/A 0.tcp.sa.ngrok.io N/A N/A
N/A 0.tcp.sa.ngrok.io 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\Local\Temp\System\Plugin.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\System\Plugin.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1400 wrote to memory of 2568 N/A C:\Users\Admin\AppData\Local\Temp\a7b1c2a715bb2f2a6358825f341bcd9e3db00164f44afae1a1e8538ebfdf3a9f.exe C:\Windows\SysWOW64\schtasks.exe
PID 1400 wrote to memory of 2568 N/A C:\Users\Admin\AppData\Local\Temp\a7b1c2a715bb2f2a6358825f341bcd9e3db00164f44afae1a1e8538ebfdf3a9f.exe C:\Windows\SysWOW64\schtasks.exe
PID 1400 wrote to memory of 2568 N/A C:\Users\Admin\AppData\Local\Temp\a7b1c2a715bb2f2a6358825f341bcd9e3db00164f44afae1a1e8538ebfdf3a9f.exe C:\Windows\SysWOW64\schtasks.exe
PID 1400 wrote to memory of 2568 N/A C:\Users\Admin\AppData\Local\Temp\a7b1c2a715bb2f2a6358825f341bcd9e3db00164f44afae1a1e8538ebfdf3a9f.exe C:\Windows\SysWOW64\schtasks.exe
PID 1400 wrote to memory of 2716 N/A C:\Users\Admin\AppData\Local\Temp\a7b1c2a715bb2f2a6358825f341bcd9e3db00164f44afae1a1e8538ebfdf3a9f.exe C:\Users\Admin\AppData\Local\Temp\System\Plugin.exe
PID 1400 wrote to memory of 2716 N/A C:\Users\Admin\AppData\Local\Temp\a7b1c2a715bb2f2a6358825f341bcd9e3db00164f44afae1a1e8538ebfdf3a9f.exe C:\Users\Admin\AppData\Local\Temp\System\Plugin.exe
PID 1400 wrote to memory of 2716 N/A C:\Users\Admin\AppData\Local\Temp\a7b1c2a715bb2f2a6358825f341bcd9e3db00164f44afae1a1e8538ebfdf3a9f.exe C:\Users\Admin\AppData\Local\Temp\System\Plugin.exe
PID 1400 wrote to memory of 2716 N/A C:\Users\Admin\AppData\Local\Temp\a7b1c2a715bb2f2a6358825f341bcd9e3db00164f44afae1a1e8538ebfdf3a9f.exe C:\Users\Admin\AppData\Local\Temp\System\Plugin.exe

Processes

C:\Users\Admin\AppData\Local\Temp\a7b1c2a715bb2f2a6358825f341bcd9e3db00164f44afae1a1e8538ebfdf3a9f.exe

"C:\Users\Admin\AppData\Local\Temp\a7b1c2a715bb2f2a6358825f341bcd9e3db00164f44afae1a1e8538ebfdf3a9f.exe"

C:\Windows\SysWOW64\schtasks.exe

schtasks /create /f /sc ONLOGON /RL HIGHEST /tn LimeRAT-Admin /tr "'C:\Users\Admin\AppData\Local\Temp\System\Plugin.exe'"

C:\Users\Admin\AppData\Local\Temp\System\Plugin.exe

"C:\Users\Admin\AppData\Local\Temp\System\Plugin.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 pastebin.com udp
US 104.20.4.235:443 pastebin.com tcp
US 8.8.8.8:53 0.tcp.sa.ngrok.io udp
BR 54.94.248.37:14622 0.tcp.sa.ngrok.io tcp
BR 54.94.248.37:14622 0.tcp.sa.ngrok.io tcp
BR 54.94.248.37:14622 0.tcp.sa.ngrok.io tcp
BR 54.94.248.37:14622 0.tcp.sa.ngrok.io tcp
BR 54.94.248.37:14622 0.tcp.sa.ngrok.io tcp
BR 54.94.248.37:14622 0.tcp.sa.ngrok.io tcp
BR 54.94.248.37:14622 0.tcp.sa.ngrok.io tcp
BR 54.94.248.37:14622 0.tcp.sa.ngrok.io tcp
BR 54.94.248.37:14622 0.tcp.sa.ngrok.io tcp
BR 54.94.248.37:14622 0.tcp.sa.ngrok.io tcp
BR 54.94.248.37:14622 0.tcp.sa.ngrok.io tcp
BR 54.94.248.37:14622 0.tcp.sa.ngrok.io tcp
BR 54.94.248.37:14622 0.tcp.sa.ngrok.io tcp
US 8.8.8.8:53 0.tcp.sa.ngrok.io udp
BR 18.231.93.153:14622 0.tcp.sa.ngrok.io tcp
BR 18.231.93.153:14622 0.tcp.sa.ngrok.io tcp
BR 18.231.93.153:14622 0.tcp.sa.ngrok.io tcp
BR 18.231.93.153:14622 0.tcp.sa.ngrok.io tcp
BR 18.231.93.153:14622 0.tcp.sa.ngrok.io tcp
BR 18.231.93.153:14622 0.tcp.sa.ngrok.io tcp
BR 18.231.93.153:14622 0.tcp.sa.ngrok.io tcp
BR 18.231.93.153:14622 0.tcp.sa.ngrok.io tcp
BR 18.231.93.153:14622 0.tcp.sa.ngrok.io tcp
BR 18.231.93.153:14622 0.tcp.sa.ngrok.io tcp
BR 18.231.93.153:14622 0.tcp.sa.ngrok.io tcp
BR 18.231.93.153:14622 0.tcp.sa.ngrok.io tcp

Files

memory/1400-0-0x000000007439E000-0x000000007439F000-memory.dmp

memory/1400-1-0x0000000001070000-0x0000000001096000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\System\Plugin.exe

MD5 08bae97aa3ca7a364e6bbe2aa6e8b8b6
SHA1 f6b7179fa8cc6a3b062c8c7b5a914c5b8f6e0312
SHA256 a7b1c2a715bb2f2a6358825f341bcd9e3db00164f44afae1a1e8538ebfdf3a9f
SHA512 ba47cc9c514627386f1f4d202b46ef182ec332db6183f4e8f5474bd13e491d91a5f7a7ee272d1d647f98ae55e553a60229100ba645c60c2e5c87b973aaf5c5a1

memory/2716-12-0x0000000000170000-0x0000000000196000-memory.dmp

memory/1400-13-0x0000000074390000-0x0000000074A7E000-memory.dmp

memory/2716-14-0x0000000074390000-0x0000000074A7E000-memory.dmp

memory/2716-15-0x0000000074390000-0x0000000074A7E000-memory.dmp

memory/2716-16-0x0000000074390000-0x0000000074A7E000-memory.dmp

memory/2716-17-0x0000000074390000-0x0000000074A7E000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-05-23 10:35

Reported

2024-05-23 10:37

Platform

win10v2004-20240226-en

Max time kernel

149s

Max time network

156s

Command Line

"C:\Users\Admin\AppData\Local\Temp\a7b1c2a715bb2f2a6358825f341bcd9e3db00164f44afae1a1e8538ebfdf3a9f.exe"

Signatures

LimeRAT

rat limerat

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\a7b1c2a715bb2f2a6358825f341bcd9e3db00164f44afae1a1e8538ebfdf3a9f.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\System\Plugin.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
N/A 0.tcp.sa.ngrok.io N/A N/A
N/A 0.tcp.sa.ngrok.io 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\Local\Temp\System\Plugin.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\System\Plugin.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4436 wrote to memory of 2496 N/A C:\Users\Admin\AppData\Local\Temp\a7b1c2a715bb2f2a6358825f341bcd9e3db00164f44afae1a1e8538ebfdf3a9f.exe C:\Windows\SysWOW64\schtasks.exe
PID 4436 wrote to memory of 2496 N/A C:\Users\Admin\AppData\Local\Temp\a7b1c2a715bb2f2a6358825f341bcd9e3db00164f44afae1a1e8538ebfdf3a9f.exe C:\Windows\SysWOW64\schtasks.exe
PID 4436 wrote to memory of 2496 N/A C:\Users\Admin\AppData\Local\Temp\a7b1c2a715bb2f2a6358825f341bcd9e3db00164f44afae1a1e8538ebfdf3a9f.exe C:\Windows\SysWOW64\schtasks.exe
PID 4436 wrote to memory of 4628 N/A C:\Users\Admin\AppData\Local\Temp\a7b1c2a715bb2f2a6358825f341bcd9e3db00164f44afae1a1e8538ebfdf3a9f.exe C:\Users\Admin\AppData\Local\Temp\System\Plugin.exe
PID 4436 wrote to memory of 4628 N/A C:\Users\Admin\AppData\Local\Temp\a7b1c2a715bb2f2a6358825f341bcd9e3db00164f44afae1a1e8538ebfdf3a9f.exe C:\Users\Admin\AppData\Local\Temp\System\Plugin.exe
PID 4436 wrote to memory of 4628 N/A C:\Users\Admin\AppData\Local\Temp\a7b1c2a715bb2f2a6358825f341bcd9e3db00164f44afae1a1e8538ebfdf3a9f.exe C:\Users\Admin\AppData\Local\Temp\System\Plugin.exe

Processes

C:\Users\Admin\AppData\Local\Temp\a7b1c2a715bb2f2a6358825f341bcd9e3db00164f44afae1a1e8538ebfdf3a9f.exe

"C:\Users\Admin\AppData\Local\Temp\a7b1c2a715bb2f2a6358825f341bcd9e3db00164f44afae1a1e8538ebfdf3a9f.exe"

C:\Windows\SysWOW64\schtasks.exe

schtasks /create /f /sc ONLOGON /RL HIGHEST /tn LimeRAT-Admin /tr "'C:\Users\Admin\AppData\Local\Temp\System\Plugin.exe'"

C:\Users\Admin\AppData\Local\Temp\System\Plugin.exe

"C:\Users\Admin\AppData\Local\Temp\System\Plugin.exe"

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=4160 --field-trial-handle=2304,i,6987730730348465820,3913273227385401271,262144 --variations-seed-version /prefetch:8

Network

Country Destination Domain Proto
US 8.8.8.8:53 79.121.231.20.in-addr.arpa udp
US 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
US 8.8.8.8:53 138.211.222.173.in-addr.arpa udp
US 8.8.8.8:53 64.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 149.220.183.52.in-addr.arpa udp
US 8.8.8.8:53 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 13.107.253.64:443 tcp
US 8.8.8.8:53 pastebin.com udp
US 172.67.19.24:443 pastebin.com tcp
US 8.8.8.8:53 0.tcp.sa.ngrok.io udp
BR 18.229.146.63:14622 0.tcp.sa.ngrok.io tcp
US 8.8.8.8:53 24.19.67.172.in-addr.arpa udp
GB 172.217.169.74:443 tcp
BR 18.229.146.63:14622 0.tcp.sa.ngrok.io tcp
BR 18.229.146.63:14622 0.tcp.sa.ngrok.io tcp
BR 18.229.146.63:14622 0.tcp.sa.ngrok.io tcp
BR 18.229.146.63:14622 0.tcp.sa.ngrok.io tcp
BR 18.229.146.63:14622 0.tcp.sa.ngrok.io tcp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
BR 18.229.146.63:14622 0.tcp.sa.ngrok.io tcp
US 8.8.8.8:53 48.229.111.52.in-addr.arpa udp
BR 18.229.146.63:14622 0.tcp.sa.ngrok.io tcp
US 8.8.8.8:53 0.tcp.sa.ngrok.io udp
BR 18.228.115.60:14622 0.tcp.sa.ngrok.io tcp
BR 18.228.115.60:14622 0.tcp.sa.ngrok.io tcp
BR 18.228.115.60:14622 0.tcp.sa.ngrok.io tcp
BR 18.228.115.60:14622 0.tcp.sa.ngrok.io tcp
BR 18.228.115.60:14622 0.tcp.sa.ngrok.io tcp
BR 18.228.115.60:14622 0.tcp.sa.ngrok.io tcp
BR 18.228.115.60:14622 0.tcp.sa.ngrok.io tcp
US 8.8.8.8:53 4.173.189.20.in-addr.arpa udp
BR 18.228.115.60:14622 0.tcp.sa.ngrok.io tcp
BR 18.228.115.60:14622 0.tcp.sa.ngrok.io tcp

Files

memory/4436-0-0x000000007512E000-0x000000007512F000-memory.dmp

memory/4436-1-0x0000000000890000-0x00000000008B6000-memory.dmp

memory/4436-2-0x0000000005230000-0x00000000052CC000-memory.dmp

memory/4436-3-0x00000000052D0000-0x0000000005336000-memory.dmp

memory/4436-4-0x0000000075120000-0x00000000758D0000-memory.dmp

memory/4436-5-0x0000000005F20000-0x00000000064C4000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\System\Plugin.exe

MD5 08bae97aa3ca7a364e6bbe2aa6e8b8b6
SHA1 f6b7179fa8cc6a3b062c8c7b5a914c5b8f6e0312
SHA256 a7b1c2a715bb2f2a6358825f341bcd9e3db00164f44afae1a1e8538ebfdf3a9f
SHA512 ba47cc9c514627386f1f4d202b46ef182ec332db6183f4e8f5474bd13e491d91a5f7a7ee272d1d647f98ae55e553a60229100ba645c60c2e5c87b973aaf5c5a1

memory/4436-14-0x000000007512E000-0x000000007512F000-memory.dmp

memory/4628-16-0x0000000075120000-0x00000000758D0000-memory.dmp

memory/4436-17-0x0000000075120000-0x00000000758D0000-memory.dmp

memory/4628-18-0x0000000075120000-0x00000000758D0000-memory.dmp

memory/4628-19-0x0000000075120000-0x00000000758D0000-memory.dmp

memory/4628-20-0x0000000075120000-0x00000000758D0000-memory.dmp