Malware Analysis Report

2024-09-11 10:01

Sample ID 240510-llfrzsfd51
Target 93a09a5ecefc75e6fda23d83deffeffddf544da2103a75422e768d26cfe9ee7f
SHA256 93a09a5ecefc75e6fda23d83deffeffddf544da2103a75422e768d26cfe9ee7f
Tags
limerat rat
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK Matrix

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

93a09a5ecefc75e6fda23d83deffeffddf544da2103a75422e768d26cfe9ee7f

Threat Level: Known bad

The file 93a09a5ecefc75e6fda23d83deffeffddf544da2103a75422e768d26cfe9ee7f was found to be: Known bad.

Malicious Activity Summary

limerat rat

LimeRAT

Limerat family

Checks computer location settings

Loads dropped DLL

Executes dropped EXE

Legitimate hosting services abused for malware hosting/C2

Enumerates physical storage devices

Unsigned PE

Suspicious use of WriteProcessMemory

Creates scheduled task(s)

Suspicious use of AdjustPrivilegeToken

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
Query Registry
T1012
System Information Discovery
T1082
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

2024-05-10 09:37

Signatures

Limerat family

limerat

Unsigned PE

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

Analysis: behavioral2

Detonation Overview

Submitted

2024-05-10 09:37

Reported

2024-05-10 09:39

Platform

win10v2004-20240426-en

Max time kernel

148s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\93a09a5ecefc75e6fda23d83deffeffddf544da2103a75422e768d26cfe9ee7f.exe"

Signatures

LimeRAT

rat limerat

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-711569230-3659488422-571408806-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\93a09a5ecefc75e6fda23d83deffeffddf544da2103a75422e768d26cfe9ee7f.exe N/A

Executes dropped EXE

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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2928 wrote to memory of 364 N/A C:\Users\Admin\AppData\Local\Temp\93a09a5ecefc75e6fda23d83deffeffddf544da2103a75422e768d26cfe9ee7f.exe C:\Windows\SysWOW64\schtasks.exe
PID 2928 wrote to memory of 364 N/A C:\Users\Admin\AppData\Local\Temp\93a09a5ecefc75e6fda23d83deffeffddf544da2103a75422e768d26cfe9ee7f.exe C:\Windows\SysWOW64\schtasks.exe
PID 2928 wrote to memory of 364 N/A C:\Users\Admin\AppData\Local\Temp\93a09a5ecefc75e6fda23d83deffeffddf544da2103a75422e768d26cfe9ee7f.exe C:\Windows\SysWOW64\schtasks.exe
PID 2928 wrote to memory of 380 N/A C:\Users\Admin\AppData\Local\Temp\93a09a5ecefc75e6fda23d83deffeffddf544da2103a75422e768d26cfe9ee7f.exe C:\Users\Admin\AppData\Roaming\pdf.exe
PID 2928 wrote to memory of 380 N/A C:\Users\Admin\AppData\Local\Temp\93a09a5ecefc75e6fda23d83deffeffddf544da2103a75422e768d26cfe9ee7f.exe C:\Users\Admin\AppData\Roaming\pdf.exe
PID 2928 wrote to memory of 380 N/A C:\Users\Admin\AppData\Local\Temp\93a09a5ecefc75e6fda23d83deffeffddf544da2103a75422e768d26cfe9ee7f.exe C:\Users\Admin\AppData\Roaming\pdf.exe

Processes

C:\Users\Admin\AppData\Local\Temp\93a09a5ecefc75e6fda23d83deffeffddf544da2103a75422e768d26cfe9ee7f.exe

"C:\Users\Admin\AppData\Local\Temp\93a09a5ecefc75e6fda23d83deffeffddf544da2103a75422e768d26cfe9ee7f.exe"

C:\Windows\SysWOW64\schtasks.exe

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

C:\Users\Admin\AppData\Roaming\pdf.exe

"C:\Users\Admin\AppData\Roaming\pdf.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.237:443 g.bing.com tcp
NL 23.62.61.72:443 www.bing.com tcp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 237.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 73.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 72.61.62.23.in-addr.arpa udp
NL 23.62.61.72:443 www.bing.com tcp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
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 54.94.248.37:13081 0.tcp.sa.ngrok.io tcp
US 8.8.8.8:53 235.4.20.104.in-addr.arpa udp
BR 54.94.248.37:13081 0.tcp.sa.ngrok.io tcp
BR 54.94.248.37:13081 0.tcp.sa.ngrok.io tcp
BR 54.94.248.37:13081 0.tcp.sa.ngrok.io tcp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 142.53.16.96.in-addr.arpa udp
BR 54.94.248.37:13081 0.tcp.sa.ngrok.io tcp
BR 54.94.248.37:13081 0.tcp.sa.ngrok.io tcp
BR 54.94.248.37:13081 0.tcp.sa.ngrok.io tcp
BR 54.94.248.37:13081 0.tcp.sa.ngrok.io tcp
BR 54.94.248.37:13081 0.tcp.sa.ngrok.io tcp
BR 54.94.248.37:13081 0.tcp.sa.ngrok.io tcp
US 8.8.8.8:53 0.tcp.sa.ngrok.io udp
BR 18.229.248.167:13081 0.tcp.sa.ngrok.io tcp
US 52.111.229.48:443 tcp
BR 18.229.248.167:13081 0.tcp.sa.ngrok.io tcp
US 8.8.8.8:53 0.tcp.sa.ngrok.io udp
BR 18.229.146.63:13081 0.tcp.sa.ngrok.io tcp
BR 18.229.146.63:13081 0.tcp.sa.ngrok.io tcp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 13.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
BR 18.229.146.63:13081 0.tcp.sa.ngrok.io tcp
US 8.8.8.8:53 200.197.79.204.in-addr.arpa udp
BR 18.229.146.63:13081 0.tcp.sa.ngrok.io tcp
BR 18.229.146.63:13081 0.tcp.sa.ngrok.io tcp
BR 18.229.146.63:13081 0.tcp.sa.ngrok.io tcp
BR 18.229.146.63:13081 0.tcp.sa.ngrok.io tcp
BR 18.229.146.63:13081 0.tcp.sa.ngrok.io tcp
BR 18.229.146.63:13081 0.tcp.sa.ngrok.io tcp
BR 18.229.146.63:13081 0.tcp.sa.ngrok.io tcp
BR 18.229.146.63:13081 0.tcp.sa.ngrok.io tcp
BR 18.229.146.63:13081 0.tcp.sa.ngrok.io tcp
US 8.8.8.8:53 122.10.44.20.in-addr.arpa udp

Files

memory/2928-0-0x0000000074E1E000-0x0000000074E1F000-memory.dmp

memory/2928-1-0x0000000000F90000-0x0000000000F9E000-memory.dmp

memory/2928-2-0x0000000005950000-0x00000000059EC000-memory.dmp

memory/2928-3-0x0000000005A60000-0x0000000005AC6000-memory.dmp

memory/2928-4-0x0000000074E10000-0x00000000755C0000-memory.dmp

memory/2928-5-0x0000000006780000-0x0000000006D24000-memory.dmp

C:\Users\Admin\AppData\Roaming\pdf.exe

MD5 e3eaf28d0259c1b26429966c9b09a3cc
SHA1 b117999cc232f0faf9ff619dcabe34cea1f4d37e
SHA256 93a09a5ecefc75e6fda23d83deffeffddf544da2103a75422e768d26cfe9ee7f
SHA512 3aa82942d23f9c43810098798fa59fe2c31b0b471bcd1d29329049b2c1089bda018afa306b12f9505f378807d4191fd6780d71b8373bde0457281e36b6b48f3e

memory/380-15-0x0000000074E10000-0x00000000755C0000-memory.dmp

memory/2928-16-0x0000000074E10000-0x00000000755C0000-memory.dmp

memory/380-17-0x0000000074E10000-0x00000000755C0000-memory.dmp

memory/380-18-0x0000000074E10000-0x00000000755C0000-memory.dmp

memory/380-19-0x0000000074E10000-0x00000000755C0000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-05-10 09:37

Reported

2024-05-10 09:39

Platform

win7-20240508-en

Max time kernel

148s

Max time network

151s

Command Line

"C:\Users\Admin\AppData\Local\Temp\93a09a5ecefc75e6fda23d83deffeffddf544da2103a75422e768d26cfe9ee7f.exe"

Signatures

LimeRAT

rat limerat

Executes dropped EXE

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

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\93a09a5ecefc75e6fda23d83deffeffddf544da2103a75422e768d26cfe9ee7f.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\93a09a5ecefc75e6fda23d83deffeffddf544da2103a75422e768d26cfe9ee7f.exe N/A

Legitimate hosting services abused for malware hosting/C2

Description Indicator Process Target
N/A 0.tcp.sa.ngrok.io N/A N/A
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
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\Roaming\pdf.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Roaming\pdf.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2268 wrote to memory of 2676 N/A C:\Users\Admin\AppData\Local\Temp\93a09a5ecefc75e6fda23d83deffeffddf544da2103a75422e768d26cfe9ee7f.exe C:\Windows\SysWOW64\schtasks.exe
PID 2268 wrote to memory of 2676 N/A C:\Users\Admin\AppData\Local\Temp\93a09a5ecefc75e6fda23d83deffeffddf544da2103a75422e768d26cfe9ee7f.exe C:\Windows\SysWOW64\schtasks.exe
PID 2268 wrote to memory of 2676 N/A C:\Users\Admin\AppData\Local\Temp\93a09a5ecefc75e6fda23d83deffeffddf544da2103a75422e768d26cfe9ee7f.exe C:\Windows\SysWOW64\schtasks.exe
PID 2268 wrote to memory of 2676 N/A C:\Users\Admin\AppData\Local\Temp\93a09a5ecefc75e6fda23d83deffeffddf544da2103a75422e768d26cfe9ee7f.exe C:\Windows\SysWOW64\schtasks.exe
PID 2268 wrote to memory of 2612 N/A C:\Users\Admin\AppData\Local\Temp\93a09a5ecefc75e6fda23d83deffeffddf544da2103a75422e768d26cfe9ee7f.exe C:\Users\Admin\AppData\Roaming\pdf.exe
PID 2268 wrote to memory of 2612 N/A C:\Users\Admin\AppData\Local\Temp\93a09a5ecefc75e6fda23d83deffeffddf544da2103a75422e768d26cfe9ee7f.exe C:\Users\Admin\AppData\Roaming\pdf.exe
PID 2268 wrote to memory of 2612 N/A C:\Users\Admin\AppData\Local\Temp\93a09a5ecefc75e6fda23d83deffeffddf544da2103a75422e768d26cfe9ee7f.exe C:\Users\Admin\AppData\Roaming\pdf.exe
PID 2268 wrote to memory of 2612 N/A C:\Users\Admin\AppData\Local\Temp\93a09a5ecefc75e6fda23d83deffeffddf544da2103a75422e768d26cfe9ee7f.exe C:\Users\Admin\AppData\Roaming\pdf.exe

Processes

C:\Users\Admin\AppData\Local\Temp\93a09a5ecefc75e6fda23d83deffeffddf544da2103a75422e768d26cfe9ee7f.exe

"C:\Users\Admin\AppData\Local\Temp\93a09a5ecefc75e6fda23d83deffeffddf544da2103a75422e768d26cfe9ee7f.exe"

C:\Windows\SysWOW64\schtasks.exe

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

C:\Users\Admin\AppData\Roaming\pdf.exe

"C:\Users\Admin\AppData\Roaming\pdf.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 pastebin.com udp
US 104.20.3.235:443 pastebin.com tcp
US 8.8.8.8:53 0.tcp.sa.ngrok.io udp
BR 18.228.115.60:13081 0.tcp.sa.ngrok.io tcp
BR 18.228.115.60:13081 0.tcp.sa.ngrok.io tcp
BR 18.228.115.60:13081 0.tcp.sa.ngrok.io tcp
US 8.8.8.8:53 0.tcp.sa.ngrok.io udp
BR 18.229.248.167:13081 0.tcp.sa.ngrok.io tcp
BR 18.229.248.167:13081 0.tcp.sa.ngrok.io tcp
BR 18.229.248.167:13081 0.tcp.sa.ngrok.io tcp
BR 18.229.248.167:13081 0.tcp.sa.ngrok.io tcp
BR 18.229.248.167:13081 0.tcp.sa.ngrok.io tcp
BR 18.229.248.167:13081 0.tcp.sa.ngrok.io tcp
BR 18.229.248.167:13081 0.tcp.sa.ngrok.io tcp
BR 18.229.248.167:13081 0.tcp.sa.ngrok.io tcp
BR 18.229.248.167:13081 0.tcp.sa.ngrok.io tcp
BR 18.229.248.167:13081 0.tcp.sa.ngrok.io tcp
BR 18.229.248.167:13081 0.tcp.sa.ngrok.io tcp
BR 18.229.248.167:13081 0.tcp.sa.ngrok.io tcp
BR 18.229.248.167:13081 0.tcp.sa.ngrok.io tcp
BR 18.229.248.167:13081 0.tcp.sa.ngrok.io tcp
BR 18.229.248.167:13081 0.tcp.sa.ngrok.io tcp
BR 18.229.248.167:13081 0.tcp.sa.ngrok.io tcp
BR 18.229.248.167:13081 0.tcp.sa.ngrok.io tcp
US 8.8.8.8:53 0.tcp.sa.ngrok.io udp
BR 18.228.115.60:13081 0.tcp.sa.ngrok.io tcp
BR 18.228.115.60:13081 0.tcp.sa.ngrok.io tcp
BR 18.228.115.60:13081 0.tcp.sa.ngrok.io tcp
BR 18.228.115.60:13081 0.tcp.sa.ngrok.io tcp
BR 18.228.115.60:13081 0.tcp.sa.ngrok.io tcp
BR 18.228.115.60:13081 0.tcp.sa.ngrok.io tcp
BR 18.228.115.60:13081 0.tcp.sa.ngrok.io tcp
BR 18.228.115.60:13081 0.tcp.sa.ngrok.io tcp
BR 18.228.115.60:13081 0.tcp.sa.ngrok.io tcp
BR 18.228.115.60:13081 0.tcp.sa.ngrok.io tcp
BR 18.228.115.60:13081 0.tcp.sa.ngrok.io tcp
BR 18.228.115.60:13081 0.tcp.sa.ngrok.io tcp
BR 18.228.115.60:13081 0.tcp.sa.ngrok.io tcp
BR 18.228.115.60:13081 0.tcp.sa.ngrok.io tcp
BR 18.228.115.60:13081 0.tcp.sa.ngrok.io tcp
US 8.8.8.8:53 0.tcp.sa.ngrok.io udp
BR 18.231.93.153:13081 0.tcp.sa.ngrok.io tcp

Files

memory/2268-0-0x0000000074CAE000-0x0000000074CAF000-memory.dmp

memory/2268-1-0x0000000000230000-0x000000000023E000-memory.dmp

\Users\Admin\AppData\Roaming\pdf.exe

MD5 e3eaf28d0259c1b26429966c9b09a3cc
SHA1 b117999cc232f0faf9ff619dcabe34cea1f4d37e
SHA256 93a09a5ecefc75e6fda23d83deffeffddf544da2103a75422e768d26cfe9ee7f
SHA512 3aa82942d23f9c43810098798fa59fe2c31b0b471bcd1d29329049b2c1089bda018afa306b12f9505f378807d4191fd6780d71b8373bde0457281e36b6b48f3e

memory/2268-12-0x0000000074CA0000-0x000000007538E000-memory.dmp

memory/2612-13-0x0000000000250000-0x000000000025E000-memory.dmp

memory/2612-14-0x0000000074CA0000-0x000000007538E000-memory.dmp

memory/2268-15-0x0000000074CA0000-0x000000007538E000-memory.dmp

memory/2612-16-0x0000000074CA0000-0x000000007538E000-memory.dmp

memory/2612-17-0x0000000074CA0000-0x000000007538E000-memory.dmp

memory/2612-18-0x0000000074CA0000-0x000000007538E000-memory.dmp