Malware Analysis Report

2024-11-16 13:10

Sample ID 220708-h7lnksfagp
Target 41069c4c9ae09d4de23e7538fb490cf2e85007fad8c7a1f70691118b7ebd5341
SHA256 41069c4c9ae09d4de23e7538fb490cf2e85007fad8c7a1f70691118b7ebd5341
Tags
limerat rat
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V6

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

41069c4c9ae09d4de23e7538fb490cf2e85007fad8c7a1f70691118b7ebd5341

Threat Level: Known bad

The file 41069c4c9ae09d4de23e7538fb490cf2e85007fad8c7a1f70691118b7ebd5341 was found to be: Known bad.

Malicious Activity Summary

limerat rat

LimeRAT

Checks computer location settings

Legitimate hosting services abused for malware hosting/C2

Suspicious use of SetThreadContext

Enumerates physical storage devices

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Creates scheduled task(s)

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2022-07-08 07:22

Signatures

N/A

Analysis: behavioral2

Detonation Overview

Submitted

2022-07-08 07:22

Reported

2022-07-08 13:34

Platform

win10v2004-20220414-en

Max time kernel

203s

Max time network

236s

Command Line

"C:\Users\Admin\AppData\Local\Temp\41069c4c9ae09d4de23e7538fb490cf2e85007fad8c7a1f70691118b7ebd5341.exe"

Signatures

LimeRAT

rat limerat

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\41069c4c9ae09d4de23e7538fb490cf2e85007fad8c7a1f70691118b7ebd5341.exe N/A

Legitimate hosting services abused for malware hosting/C2

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 460 set thread context of 3984 N/A C:\Users\Admin\AppData\Local\Temp\41069c4c9ae09d4de23e7538fb490cf2e85007fad8c7a1f70691118b7ebd5341.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe

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\41069c4c9ae09d4de23e7538fb490cf2e85007fad8c7a1f70691118b7ebd5341.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 460 wrote to memory of 2768 N/A C:\Users\Admin\AppData\Local\Temp\41069c4c9ae09d4de23e7538fb490cf2e85007fad8c7a1f70691118b7ebd5341.exe C:\Windows\SysWOW64\schtasks.exe
PID 460 wrote to memory of 2768 N/A C:\Users\Admin\AppData\Local\Temp\41069c4c9ae09d4de23e7538fb490cf2e85007fad8c7a1f70691118b7ebd5341.exe C:\Windows\SysWOW64\schtasks.exe
PID 460 wrote to memory of 2768 N/A C:\Users\Admin\AppData\Local\Temp\41069c4c9ae09d4de23e7538fb490cf2e85007fad8c7a1f70691118b7ebd5341.exe C:\Windows\SysWOW64\schtasks.exe
PID 460 wrote to memory of 3984 N/A C:\Users\Admin\AppData\Local\Temp\41069c4c9ae09d4de23e7538fb490cf2e85007fad8c7a1f70691118b7ebd5341.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 460 wrote to memory of 3984 N/A C:\Users\Admin\AppData\Local\Temp\41069c4c9ae09d4de23e7538fb490cf2e85007fad8c7a1f70691118b7ebd5341.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 460 wrote to memory of 3984 N/A C:\Users\Admin\AppData\Local\Temp\41069c4c9ae09d4de23e7538fb490cf2e85007fad8c7a1f70691118b7ebd5341.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 460 wrote to memory of 3984 N/A C:\Users\Admin\AppData\Local\Temp\41069c4c9ae09d4de23e7538fb490cf2e85007fad8c7a1f70691118b7ebd5341.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 460 wrote to memory of 3984 N/A C:\Users\Admin\AppData\Local\Temp\41069c4c9ae09d4de23e7538fb490cf2e85007fad8c7a1f70691118b7ebd5341.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 460 wrote to memory of 3984 N/A C:\Users\Admin\AppData\Local\Temp\41069c4c9ae09d4de23e7538fb490cf2e85007fad8c7a1f70691118b7ebd5341.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 460 wrote to memory of 3984 N/A C:\Users\Admin\AppData\Local\Temp\41069c4c9ae09d4de23e7538fb490cf2e85007fad8c7a1f70691118b7ebd5341.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe

Processes

C:\Users\Admin\AppData\Local\Temp\41069c4c9ae09d4de23e7538fb490cf2e85007fad8c7a1f70691118b7ebd5341.exe

"C:\Users\Admin\AppData\Local\Temp\41069c4c9ae09d4de23e7538fb490cf2e85007fad8c7a1f70691118b7ebd5341.exe"

C:\Windows\SysWOW64\schtasks.exe

"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\CdCvkfgDy" /XML "C:\Users\Admin\AppData\Local\Temp\tmp13EC.tmp"

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe

"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"

Network

Country Destination Domain Proto
US 20.189.173.4:443 tcp
NL 104.110.191.133:80 tcp
NL 104.110.191.133:80 tcp
US 8.8.8.8:53 14.110.152.52.in-addr.arpa udp
US 8.8.8.8:53 a.2.0.0.0.0.0.0.0.0.0.0.0.0.0.0.3.0.0.0.5.0.8.0.0.3.0.1.3.0.6.2.ip6.arpa udp
US 8.8.8.8:53 pastebin.com udp
US 104.20.67.143:443 pastebin.com tcp

Files

memory/460-130-0x0000000000980000-0x00000000009FE000-memory.dmp

memory/460-131-0x0000000005380000-0x000000000541C000-memory.dmp

memory/460-132-0x0000000005A80000-0x0000000006024000-memory.dmp

memory/460-133-0x00000000054D0000-0x0000000005562000-memory.dmp

memory/460-134-0x0000000005430000-0x000000000543A000-memory.dmp

memory/460-135-0x00000000056A0000-0x00000000056F6000-memory.dmp

memory/2768-136-0x0000000000000000-mapping.dmp

C:\Users\Admin\AppData\Local\Temp\tmp13EC.tmp

MD5 f579d94b58a23c0336bfed982218ca2f
SHA1 a7687bdb5e9e6eadb01fd588f37b399f34f02b3d
SHA256 0f1c83872107cb4bed8936a195275891772462d1bb3a3923eb7152a7447c2ce8
SHA512 303e85cea6067ecb1acddf5aefc86db264d52980a085ef5e90a89c0976c1bb596413c4c09e602eee6f2c88256c7207cb0aab40c78286877e0fc2ffdbe2d853b0

memory/3984-138-0x0000000000000000-mapping.dmp

memory/3984-140-0x0000000000370000-0x000000000037C000-memory.dmp

memory/3984-141-0x0000000004AD0000-0x0000000004B36000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2022-07-08 07:22

Reported

2022-07-08 13:31

Platform

win7-20220414-en

Max time kernel

151s

Max time network

154s

Command Line

"C:\Users\Admin\AppData\Local\Temp\41069c4c9ae09d4de23e7538fb490cf2e85007fad8c7a1f70691118b7ebd5341.exe"

Signatures

LimeRAT

rat limerat

Legitimate hosting services abused for malware hosting/C2

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 1640 set thread context of 1724 N/A C:\Users\Admin\AppData\Local\Temp\41069c4c9ae09d4de23e7538fb490cf2e85007fad8c7a1f70691118b7ebd5341.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe

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 behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\41069c4c9ae09d4de23e7538fb490cf2e85007fad8c7a1f70691118b7ebd5341.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\41069c4c9ae09d4de23e7538fb490cf2e85007fad8c7a1f70691118b7ebd5341.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1640 wrote to memory of 952 N/A C:\Users\Admin\AppData\Local\Temp\41069c4c9ae09d4de23e7538fb490cf2e85007fad8c7a1f70691118b7ebd5341.exe C:\Windows\SysWOW64\schtasks.exe
PID 1640 wrote to memory of 952 N/A C:\Users\Admin\AppData\Local\Temp\41069c4c9ae09d4de23e7538fb490cf2e85007fad8c7a1f70691118b7ebd5341.exe C:\Windows\SysWOW64\schtasks.exe
PID 1640 wrote to memory of 952 N/A C:\Users\Admin\AppData\Local\Temp\41069c4c9ae09d4de23e7538fb490cf2e85007fad8c7a1f70691118b7ebd5341.exe C:\Windows\SysWOW64\schtasks.exe
PID 1640 wrote to memory of 952 N/A C:\Users\Admin\AppData\Local\Temp\41069c4c9ae09d4de23e7538fb490cf2e85007fad8c7a1f70691118b7ebd5341.exe C:\Windows\SysWOW64\schtasks.exe
PID 1640 wrote to memory of 1724 N/A C:\Users\Admin\AppData\Local\Temp\41069c4c9ae09d4de23e7538fb490cf2e85007fad8c7a1f70691118b7ebd5341.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 1640 wrote to memory of 1724 N/A C:\Users\Admin\AppData\Local\Temp\41069c4c9ae09d4de23e7538fb490cf2e85007fad8c7a1f70691118b7ebd5341.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 1640 wrote to memory of 1724 N/A C:\Users\Admin\AppData\Local\Temp\41069c4c9ae09d4de23e7538fb490cf2e85007fad8c7a1f70691118b7ebd5341.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 1640 wrote to memory of 1724 N/A C:\Users\Admin\AppData\Local\Temp\41069c4c9ae09d4de23e7538fb490cf2e85007fad8c7a1f70691118b7ebd5341.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 1640 wrote to memory of 1724 N/A C:\Users\Admin\AppData\Local\Temp\41069c4c9ae09d4de23e7538fb490cf2e85007fad8c7a1f70691118b7ebd5341.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 1640 wrote to memory of 1724 N/A C:\Users\Admin\AppData\Local\Temp\41069c4c9ae09d4de23e7538fb490cf2e85007fad8c7a1f70691118b7ebd5341.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 1640 wrote to memory of 1724 N/A C:\Users\Admin\AppData\Local\Temp\41069c4c9ae09d4de23e7538fb490cf2e85007fad8c7a1f70691118b7ebd5341.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 1640 wrote to memory of 1724 N/A C:\Users\Admin\AppData\Local\Temp\41069c4c9ae09d4de23e7538fb490cf2e85007fad8c7a1f70691118b7ebd5341.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 1640 wrote to memory of 1724 N/A C:\Users\Admin\AppData\Local\Temp\41069c4c9ae09d4de23e7538fb490cf2e85007fad8c7a1f70691118b7ebd5341.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 1640 wrote to memory of 1724 N/A C:\Users\Admin\AppData\Local\Temp\41069c4c9ae09d4de23e7538fb490cf2e85007fad8c7a1f70691118b7ebd5341.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 1640 wrote to memory of 1724 N/A C:\Users\Admin\AppData\Local\Temp\41069c4c9ae09d4de23e7538fb490cf2e85007fad8c7a1f70691118b7ebd5341.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe

Processes

C:\Users\Admin\AppData\Local\Temp\41069c4c9ae09d4de23e7538fb490cf2e85007fad8c7a1f70691118b7ebd5341.exe

"C:\Users\Admin\AppData\Local\Temp\41069c4c9ae09d4de23e7538fb490cf2e85007fad8c7a1f70691118b7ebd5341.exe"

C:\Windows\SysWOW64\schtasks.exe

"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\CdCvkfgDy" /XML "C:\Users\Admin\AppData\Local\Temp\tmp29DF.tmp"

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe

"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 pastebin.com udp
US 104.20.67.143:443 pastebin.com tcp

Files

memory/1640-54-0x0000000000CB0000-0x0000000000D2E000-memory.dmp

memory/1640-55-0x0000000076241000-0x0000000076243000-memory.dmp

memory/1640-56-0x00000000003D0000-0x00000000003E8000-memory.dmp

memory/952-57-0x0000000000000000-mapping.dmp

C:\Users\Admin\AppData\Local\Temp\tmp29DF.tmp

MD5 55786119d3554b7d0453437db9b912bf
SHA1 f9867bb19591803eee6de4a7338786ec18611904
SHA256 ba79f48fc717b7dbcbd3532a5eb2ec1934ddc829a27d2704461c2682b0583a22
SHA512 0776eab51d1eb00304a2be356053e757b3cd52a670a13d8e786a1cf04a96be13e3f778102085d9ff356d0f3942910f56a3faab38a7a32144e0e1c7b2e4dabd26

memory/1724-59-0x0000000000400000-0x000000000040C000-memory.dmp

memory/1724-60-0x0000000000400000-0x000000000040C000-memory.dmp

memory/1724-62-0x0000000000400000-0x000000000040C000-memory.dmp

memory/1724-63-0x0000000000400000-0x000000000040C000-memory.dmp

memory/1724-64-0x0000000000408C1E-mapping.dmp

memory/1724-66-0x0000000000400000-0x000000000040C000-memory.dmp

memory/1724-68-0x0000000000400000-0x000000000040C000-memory.dmp