Malware Analysis Report

2024-12-07 14:04

Sample ID 241112-12razssdrh
Target 51c2d225d72aa3a0cd2b9ea143cdd5b5ad8f7c601df1bc7c39c7f05fde84a1ce
SHA256 51c2d225d72aa3a0cd2b9ea143cdd5b5ad8f7c601df1bc7c39c7f05fde84a1ce
Tags
nanocore discovery evasion keylogger persistence spyware stealer trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

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

51c2d225d72aa3a0cd2b9ea143cdd5b5ad8f7c601df1bc7c39c7f05fde84a1ce

Threat Level: Known bad

The file 51c2d225d72aa3a0cd2b9ea143cdd5b5ad8f7c601df1bc7c39c7f05fde84a1ce was found to be: Known bad.

Malicious Activity Summary

nanocore discovery evasion keylogger persistence spyware stealer trojan

NanoCore

Nanocore family

Checks computer location settings

Loads dropped DLL

Executes dropped EXE

Checks whether UAC is enabled

Adds Run key to start application

Suspicious use of SetThreadContext

Enumerates physical storage devices

System Location Discovery: System Language Discovery

Unsigned PE

Suspicious use of WriteProcessMemory

Suspicious use of AdjustPrivilegeToken

Suspicious behavior: GetForegroundWindowSpam

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-12 22:09

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-11-12 22:09

Reported

2024-11-12 22:11

Platform

win7-20240903-en

Max time kernel

140s

Max time network

144s

Command Line

"C:\Users\Admin\AppData\Local\Temp\51c2d225d72aa3a0cd2b9ea143cdd5b5ad8f7c601df1bc7c39c7f05fde84a1ce.exe"

Signatures

NanoCore

keylogger trojan stealer spyware nanocore

Nanocore family

nanocore

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\c5e4gxfvd4v\ximo2ubzn1i.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-3063565911-2056067323-3330884624-1000\Software\Microsoft\Windows\CurrentVersion\Run\c5e4gxfvd4v = "C:\\Users\\Admin\\AppData\\Roaming\\c5e4gxfvd4v\\ximo2ubzn1i.exe" C:\Users\Admin\AppData\Local\Temp\51c2d225d72aa3a0cd2b9ea143cdd5b5ad8f7c601df1bc7c39c7f05fde84a1ce.exe N/A

Checks whether UAC is enabled

evasion trojan
Description Indicator Process Target
Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 2720 set thread context of 2480 N/A C:\Users\Admin\AppData\Roaming\c5e4gxfvd4v\ximo2ubzn1i.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe

Enumerates physical storage devices

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\51c2d225d72aa3a0cd2b9ea143cdd5b5ad8f7c601df1bc7c39c7f05fde84a1ce.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Roaming\c5e4gxfvd4v\ximo2ubzn1i.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe N/A

Suspicious behavior: GetForegroundWindowSpam

Description Indicator Process Target
N/A N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
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 2240 wrote to memory of 2720 N/A C:\Users\Admin\AppData\Local\Temp\51c2d225d72aa3a0cd2b9ea143cdd5b5ad8f7c601df1bc7c39c7f05fde84a1ce.exe C:\Users\Admin\AppData\Roaming\c5e4gxfvd4v\ximo2ubzn1i.exe
PID 2240 wrote to memory of 2720 N/A C:\Users\Admin\AppData\Local\Temp\51c2d225d72aa3a0cd2b9ea143cdd5b5ad8f7c601df1bc7c39c7f05fde84a1ce.exe C:\Users\Admin\AppData\Roaming\c5e4gxfvd4v\ximo2ubzn1i.exe
PID 2240 wrote to memory of 2720 N/A C:\Users\Admin\AppData\Local\Temp\51c2d225d72aa3a0cd2b9ea143cdd5b5ad8f7c601df1bc7c39c7f05fde84a1ce.exe C:\Users\Admin\AppData\Roaming\c5e4gxfvd4v\ximo2ubzn1i.exe
PID 2240 wrote to memory of 2720 N/A C:\Users\Admin\AppData\Local\Temp\51c2d225d72aa3a0cd2b9ea143cdd5b5ad8f7c601df1bc7c39c7f05fde84a1ce.exe C:\Users\Admin\AppData\Roaming\c5e4gxfvd4v\ximo2ubzn1i.exe
PID 2720 wrote to memory of 2480 N/A C:\Users\Admin\AppData\Roaming\c5e4gxfvd4v\ximo2ubzn1i.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
PID 2720 wrote to memory of 2480 N/A C:\Users\Admin\AppData\Roaming\c5e4gxfvd4v\ximo2ubzn1i.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
PID 2720 wrote to memory of 2480 N/A C:\Users\Admin\AppData\Roaming\c5e4gxfvd4v\ximo2ubzn1i.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
PID 2720 wrote to memory of 2480 N/A C:\Users\Admin\AppData\Roaming\c5e4gxfvd4v\ximo2ubzn1i.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
PID 2720 wrote to memory of 2480 N/A C:\Users\Admin\AppData\Roaming\c5e4gxfvd4v\ximo2ubzn1i.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
PID 2720 wrote to memory of 2480 N/A C:\Users\Admin\AppData\Roaming\c5e4gxfvd4v\ximo2ubzn1i.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
PID 2720 wrote to memory of 2480 N/A C:\Users\Admin\AppData\Roaming\c5e4gxfvd4v\ximo2ubzn1i.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
PID 2720 wrote to memory of 2480 N/A C:\Users\Admin\AppData\Roaming\c5e4gxfvd4v\ximo2ubzn1i.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
PID 2720 wrote to memory of 2480 N/A C:\Users\Admin\AppData\Roaming\c5e4gxfvd4v\ximo2ubzn1i.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
PID 2720 wrote to memory of 2480 N/A C:\Users\Admin\AppData\Roaming\c5e4gxfvd4v\ximo2ubzn1i.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
PID 2720 wrote to memory of 2480 N/A C:\Users\Admin\AppData\Roaming\c5e4gxfvd4v\ximo2ubzn1i.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
PID 2720 wrote to memory of 2480 N/A C:\Users\Admin\AppData\Roaming\c5e4gxfvd4v\ximo2ubzn1i.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe

Processes

C:\Users\Admin\AppData\Local\Temp\51c2d225d72aa3a0cd2b9ea143cdd5b5ad8f7c601df1bc7c39c7f05fde84a1ce.exe

"C:\Users\Admin\AppData\Local\Temp\51c2d225d72aa3a0cd2b9ea143cdd5b5ad8f7c601df1bc7c39c7f05fde84a1ce.exe"

C:\Users\Admin\AppData\Roaming\c5e4gxfvd4v\ximo2ubzn1i.exe

"C:\Users\Admin\AppData\Roaming\c5e4gxfvd4v\ximo2ubzn1i.exe"

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
FR 178.32.224.116:46218 tcp
FR 178.32.224.116:46218 tcp
FR 178.32.224.116:46218 tcp
FR 178.32.224.116:46218 tcp
FR 178.32.224.116:46218 tcp
FR 178.32.224.116:46218 tcp
FR 178.32.224.116:46218 tcp

Files

memory/2240-0-0x0000000073F2E000-0x0000000073F2F000-memory.dmp

memory/2240-1-0x0000000000070000-0x00000000000DE000-memory.dmp

memory/2240-2-0x0000000073F20000-0x000000007460E000-memory.dmp

memory/2240-3-0x0000000001FA0000-0x0000000001FDC000-memory.dmp

\Users\Admin\AppData\Roaming\c5e4gxfvd4v\ximo2ubzn1i.exe

MD5 21c6ece0ca3d12bf58355dc47389cc2b
SHA1 120ce98c35905630236b5515d8a31a11df0a660f
SHA256 166e40294ce3a1cc8bed464e96234d864f865487d5584245600f2ecfd2f9867b
SHA512 28a6727971923ccd282fdd71d5df474ed20c8ee45f7cc38a16015b52ef5c13200828ab2e90e8e7351705b782cf645cb0c03c910446c51bfb6a506aa6befc3e07

memory/2720-13-0x0000000001350000-0x00000000013BE000-memory.dmp

memory/2720-15-0x0000000073F20000-0x000000007460E000-memory.dmp

memory/2720-14-0x0000000073F20000-0x000000007460E000-memory.dmp

memory/2240-12-0x0000000073F20000-0x000000007460E000-memory.dmp

memory/2480-18-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2480-28-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2480-27-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2480-23-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

memory/2480-22-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2480-20-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2480-17-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2480-16-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2480-30-0x00000000005D0000-0x00000000005DA000-memory.dmp

memory/2480-31-0x00000000009A0000-0x00000000009BE000-memory.dmp

memory/2480-32-0x00000000007F0000-0x00000000007FA000-memory.dmp

memory/2720-33-0x0000000073F20000-0x000000007460E000-memory.dmp

memory/2720-34-0x0000000073F20000-0x000000007460E000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-12 22:09

Reported

2024-11-12 22:11

Platform

win10v2004-20241007-en

Max time kernel

141s

Max time network

149s

Command Line

"C:\Users\Admin\AppData\Local\Temp\51c2d225d72aa3a0cd2b9ea143cdd5b5ad8f7c601df1bc7c39c7f05fde84a1ce.exe"

Signatures

NanoCore

keylogger trojan stealer spyware nanocore

Nanocore family

nanocore

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\51c2d225d72aa3a0cd2b9ea143cdd5b5ad8f7c601df1bc7c39c7f05fde84a1ce.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\c5e4gxfvd4v\ximo2ubzn1i.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\c5e4gxfvd4v = "C:\\Users\\Admin\\AppData\\Roaming\\c5e4gxfvd4v\\ximo2ubzn1i.exe" C:\Users\Admin\AppData\Local\Temp\51c2d225d72aa3a0cd2b9ea143cdd5b5ad8f7c601df1bc7c39c7f05fde84a1ce.exe N/A

Checks whether UAC is enabled

evasion trojan
Description Indicator Process Target
Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 1552 set thread context of 2604 N/A C:\Users\Admin\AppData\Roaming\c5e4gxfvd4v\ximo2ubzn1i.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe

Enumerates physical storage devices

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Roaming\c5e4gxfvd4v\ximo2ubzn1i.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\51c2d225d72aa3a0cd2b9ea143cdd5b5ad8f7c601df1bc7c39c7f05fde84a1ce.exe N/A

Suspicious behavior: GetForegroundWindowSpam

Description Indicator Process Target
N/A N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
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 4604 wrote to memory of 1552 N/A C:\Users\Admin\AppData\Local\Temp\51c2d225d72aa3a0cd2b9ea143cdd5b5ad8f7c601df1bc7c39c7f05fde84a1ce.exe C:\Users\Admin\AppData\Roaming\c5e4gxfvd4v\ximo2ubzn1i.exe
PID 4604 wrote to memory of 1552 N/A C:\Users\Admin\AppData\Local\Temp\51c2d225d72aa3a0cd2b9ea143cdd5b5ad8f7c601df1bc7c39c7f05fde84a1ce.exe C:\Users\Admin\AppData\Roaming\c5e4gxfvd4v\ximo2ubzn1i.exe
PID 4604 wrote to memory of 1552 N/A C:\Users\Admin\AppData\Local\Temp\51c2d225d72aa3a0cd2b9ea143cdd5b5ad8f7c601df1bc7c39c7f05fde84a1ce.exe C:\Users\Admin\AppData\Roaming\c5e4gxfvd4v\ximo2ubzn1i.exe
PID 1552 wrote to memory of 2604 N/A C:\Users\Admin\AppData\Roaming\c5e4gxfvd4v\ximo2ubzn1i.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
PID 1552 wrote to memory of 2604 N/A C:\Users\Admin\AppData\Roaming\c5e4gxfvd4v\ximo2ubzn1i.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
PID 1552 wrote to memory of 2604 N/A C:\Users\Admin\AppData\Roaming\c5e4gxfvd4v\ximo2ubzn1i.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
PID 1552 wrote to memory of 2604 N/A C:\Users\Admin\AppData\Roaming\c5e4gxfvd4v\ximo2ubzn1i.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
PID 1552 wrote to memory of 2604 N/A C:\Users\Admin\AppData\Roaming\c5e4gxfvd4v\ximo2ubzn1i.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
PID 1552 wrote to memory of 2604 N/A C:\Users\Admin\AppData\Roaming\c5e4gxfvd4v\ximo2ubzn1i.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
PID 1552 wrote to memory of 2604 N/A C:\Users\Admin\AppData\Roaming\c5e4gxfvd4v\ximo2ubzn1i.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
PID 1552 wrote to memory of 2604 N/A C:\Users\Admin\AppData\Roaming\c5e4gxfvd4v\ximo2ubzn1i.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe

Processes

C:\Users\Admin\AppData\Local\Temp\51c2d225d72aa3a0cd2b9ea143cdd5b5ad8f7c601df1bc7c39c7f05fde84a1ce.exe

"C:\Users\Admin\AppData\Local\Temp\51c2d225d72aa3a0cd2b9ea143cdd5b5ad8f7c601df1bc7c39c7f05fde84a1ce.exe"

C:\Users\Admin\AppData\Roaming\c5e4gxfvd4v\ximo2ubzn1i.exe

"C:\Users\Admin\AppData\Roaming\c5e4gxfvd4v\ximo2ubzn1i.exe"

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 97.17.167.52.in-addr.arpa udp
US 8.8.8.8:53 77.190.18.2.in-addr.arpa udp
US 8.8.8.8:53 140.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
FR 178.32.224.116:46218 tcp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 82.190.18.2.in-addr.arpa udp
FR 178.32.224.116:46218 tcp
FR 178.32.224.116:46218 tcp
FR 178.32.224.116:46218 tcp
US 8.8.8.8:53 43.229.111.52.in-addr.arpa udp
FR 178.32.224.116:46218 tcp
FR 178.32.224.116:46218 tcp
FR 178.32.224.116:46218 tcp

Files

memory/4604-0-0x00000000751AE000-0x00000000751AF000-memory.dmp

memory/4604-1-0x00000000001C0000-0x000000000022E000-memory.dmp

memory/4604-2-0x0000000005190000-0x0000000005734000-memory.dmp

memory/4604-3-0x0000000004C80000-0x0000000004D12000-memory.dmp

memory/4604-5-0x00000000751A0000-0x0000000075950000-memory.dmp

memory/4604-4-0x0000000004C30000-0x0000000004C3A000-memory.dmp

memory/4604-6-0x0000000005110000-0x000000000514C000-memory.dmp

C:\Users\Admin\AppData\Roaming\c5e4gxfvd4v\ximo2ubzn1i.exe

MD5 089d812cd5d5144d87faa9ddcb458321
SHA1 6f455331b9632dfe79e882cddd229c0e2e83552c
SHA256 8d6c2b1cd5ea2a87efb4d1de72caa85b2bf7e85ab0e938b9e710dd2f78996db9
SHA512 44836cdc1d3b32947da60e28bdd46ef9e572c4519f10ea38a222667a4383a7d3b2fdc1a756a2eeff183789e200b64fdcc798b0513fe0bc6d7105869ef16728eb

memory/1552-20-0x00000000751A0000-0x0000000075950000-memory.dmp

memory/1552-21-0x00000000751A0000-0x0000000075950000-memory.dmp

memory/2604-22-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2604-24-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2604-23-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2604-26-0x00000000751A0000-0x0000000075950000-memory.dmp

memory/2604-27-0x0000000005740000-0x00000000057DC000-memory.dmp

memory/2604-29-0x00000000059B0000-0x00000000059BA000-memory.dmp

memory/2604-30-0x0000000005CD0000-0x0000000005CEE000-memory.dmp

memory/2604-31-0x0000000006570000-0x000000000657A000-memory.dmp

memory/4604-32-0x00000000751A0000-0x0000000075950000-memory.dmp

memory/1552-33-0x00000000751A0000-0x0000000075950000-memory.dmp

memory/1552-35-0x00000000751A0000-0x0000000075950000-memory.dmp

memory/2604-36-0x00000000751A0000-0x0000000075950000-memory.dmp