Malware Analysis Report

2024-12-07 14:05

Sample ID 241112-nd531szras
Target a634052144ca4c55b40b8a317b87b96ee607247fabc2be5147b4366f68736343.exe
SHA256 a634052144ca4c55b40b8a317b87b96ee607247fabc2be5147b4366f68736343
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

a634052144ca4c55b40b8a317b87b96ee607247fabc2be5147b4366f68736343

Threat Level: Known bad

The file a634052144ca4c55b40b8a317b87b96ee607247fabc2be5147b4366f68736343.exe was found to be: Known bad.

Malicious Activity Summary

nanocore discovery evasion keylogger persistence spyware stealer trojan

NanoCore

Nanocore family

Executes dropped EXE

Loads dropped DLL

Checks computer location settings

Checks whether UAC is enabled

Adds Run key to start application

Suspicious use of SetThreadContext

Enumerates physical storage devices

Unsigned PE

System Location Discovery: System Language Discovery

Suspicious behavior: GetForegroundWindowSpam

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-12 11:17

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-11-12 11:17

Reported

2024-11-12 11:19

Platform

win7-20240903-en

Max time kernel

111s

Max time network

115s

Command Line

"C:\Users\Admin\AppData\Local\Temp\a634052144ca4c55b40b8a317b87b96ee607247fabc2be5147b4366f68736343.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-1-5-21-2872745919-2748461613-2989606286-1000\Software\Microsoft\Windows\CurrentVersion\Run\c5e4gxfvd4v = "C:\\Users\\Admin\\AppData\\Roaming\\c5e4gxfvd4v\\ximo2ubzn1i.exe" C:\Users\Admin\AppData\Local\Temp\a634052144ca4c55b40b8a317b87b96ee607247fabc2be5147b4366f68736343.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 2948 set thread context of 2828 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\a634052144ca4c55b40b8a317b87b96ee607247fabc2be5147b4366f68736343.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 2552 wrote to memory of 2948 N/A C:\Users\Admin\AppData\Local\Temp\a634052144ca4c55b40b8a317b87b96ee607247fabc2be5147b4366f68736343.exe C:\Users\Admin\AppData\Roaming\c5e4gxfvd4v\ximo2ubzn1i.exe
PID 2552 wrote to memory of 2948 N/A C:\Users\Admin\AppData\Local\Temp\a634052144ca4c55b40b8a317b87b96ee607247fabc2be5147b4366f68736343.exe C:\Users\Admin\AppData\Roaming\c5e4gxfvd4v\ximo2ubzn1i.exe
PID 2552 wrote to memory of 2948 N/A C:\Users\Admin\AppData\Local\Temp\a634052144ca4c55b40b8a317b87b96ee607247fabc2be5147b4366f68736343.exe C:\Users\Admin\AppData\Roaming\c5e4gxfvd4v\ximo2ubzn1i.exe
PID 2552 wrote to memory of 2948 N/A C:\Users\Admin\AppData\Local\Temp\a634052144ca4c55b40b8a317b87b96ee607247fabc2be5147b4366f68736343.exe C:\Users\Admin\AppData\Roaming\c5e4gxfvd4v\ximo2ubzn1i.exe
PID 2948 wrote to memory of 2828 N/A C:\Users\Admin\AppData\Roaming\c5e4gxfvd4v\ximo2ubzn1i.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
PID 2948 wrote to memory of 2828 N/A C:\Users\Admin\AppData\Roaming\c5e4gxfvd4v\ximo2ubzn1i.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
PID 2948 wrote to memory of 2828 N/A C:\Users\Admin\AppData\Roaming\c5e4gxfvd4v\ximo2ubzn1i.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
PID 2948 wrote to memory of 2828 N/A C:\Users\Admin\AppData\Roaming\c5e4gxfvd4v\ximo2ubzn1i.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
PID 2948 wrote to memory of 2828 N/A C:\Users\Admin\AppData\Roaming\c5e4gxfvd4v\ximo2ubzn1i.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
PID 2948 wrote to memory of 2828 N/A C:\Users\Admin\AppData\Roaming\c5e4gxfvd4v\ximo2ubzn1i.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
PID 2948 wrote to memory of 2828 N/A C:\Users\Admin\AppData\Roaming\c5e4gxfvd4v\ximo2ubzn1i.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
PID 2948 wrote to memory of 2828 N/A C:\Users\Admin\AppData\Roaming\c5e4gxfvd4v\ximo2ubzn1i.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
PID 2948 wrote to memory of 2828 N/A C:\Users\Admin\AppData\Roaming\c5e4gxfvd4v\ximo2ubzn1i.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
PID 2948 wrote to memory of 2828 N/A C:\Users\Admin\AppData\Roaming\c5e4gxfvd4v\ximo2ubzn1i.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
PID 2948 wrote to memory of 2828 N/A C:\Users\Admin\AppData\Roaming\c5e4gxfvd4v\ximo2ubzn1i.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
PID 2948 wrote to memory of 2828 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\a634052144ca4c55b40b8a317b87b96ee607247fabc2be5147b4366f68736343.exe

"C:\Users\Admin\AppData\Local\Temp\a634052144ca4c55b40b8a317b87b96ee607247fabc2be5147b4366f68736343.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

Files

memory/2552-0-0x000000007477E000-0x000000007477F000-memory.dmp

memory/2552-1-0x0000000001200000-0x000000000126E000-memory.dmp

memory/2552-2-0x0000000074770000-0x0000000074E5E000-memory.dmp

memory/2552-3-0x0000000001050000-0x000000000108C000-memory.dmp

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

MD5 057ab368b7f4db0895789498ddda3b1f
SHA1 5ea62881bea35ace7d8b59c501ee6544d269c353
SHA256 55d7840c9803df02eeeada1a8923cdecbf5b32e2bf4c1f000ec2589570d229f1
SHA512 3a60684acfa15371c308cacfd1c1dbc2739a9405e7c3cac31e6f76fab9a439398a8acdcca2d28e7f82df5f13c5f4a0a391ca445e587cc7b51b3a70fb19f92530

memory/2552-12-0x0000000074770000-0x0000000074E5E000-memory.dmp

memory/2948-13-0x0000000074770000-0x0000000074E5E000-memory.dmp

memory/2948-14-0x0000000000200000-0x000000000026E000-memory.dmp

memory/2948-15-0x0000000074770000-0x0000000074E5E000-memory.dmp

memory/2828-16-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2828-18-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2828-26-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

memory/2828-30-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2828-25-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2828-23-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2828-20-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2828-32-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2828-34-0x00000000003F0000-0x00000000003FA000-memory.dmp

memory/2828-35-0x00000000004E0000-0x00000000004FE000-memory.dmp

memory/2828-36-0x0000000000500000-0x000000000050A000-memory.dmp

memory/2948-37-0x0000000074770000-0x0000000074E5E000-memory.dmp

memory/2948-38-0x0000000074770000-0x0000000074E5E000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-12 11:17

Reported

2024-11-12 11:19

Platform

win10v2004-20241007-en

Max time kernel

114s

Max time network

118s

Command Line

"C:\Users\Admin\AppData\Local\Temp\a634052144ca4c55b40b8a317b87b96ee607247fabc2be5147b4366f68736343.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-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\a634052144ca4c55b40b8a317b87b96ee607247fabc2be5147b4366f68736343.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-1-5-21-4050598569-1597076380-177084960-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\c5e4gxfvd4v = "C:\\Users\\Admin\\AppData\\Roaming\\c5e4gxfvd4v\\ximo2ubzn1i.exe" C:\Users\Admin\AppData\Local\Temp\a634052144ca4c55b40b8a317b87b96ee607247fabc2be5147b4366f68736343.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 32 set thread context of 3352 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\a634052144ca4c55b40b8a317b87b96ee607247fabc2be5147b4366f68736343.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 1144 wrote to memory of 32 N/A C:\Users\Admin\AppData\Local\Temp\a634052144ca4c55b40b8a317b87b96ee607247fabc2be5147b4366f68736343.exe C:\Users\Admin\AppData\Roaming\c5e4gxfvd4v\ximo2ubzn1i.exe
PID 1144 wrote to memory of 32 N/A C:\Users\Admin\AppData\Local\Temp\a634052144ca4c55b40b8a317b87b96ee607247fabc2be5147b4366f68736343.exe C:\Users\Admin\AppData\Roaming\c5e4gxfvd4v\ximo2ubzn1i.exe
PID 1144 wrote to memory of 32 N/A C:\Users\Admin\AppData\Local\Temp\a634052144ca4c55b40b8a317b87b96ee607247fabc2be5147b4366f68736343.exe C:\Users\Admin\AppData\Roaming\c5e4gxfvd4v\ximo2ubzn1i.exe
PID 32 wrote to memory of 3352 N/A C:\Users\Admin\AppData\Roaming\c5e4gxfvd4v\ximo2ubzn1i.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
PID 32 wrote to memory of 3352 N/A C:\Users\Admin\AppData\Roaming\c5e4gxfvd4v\ximo2ubzn1i.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
PID 32 wrote to memory of 3352 N/A C:\Users\Admin\AppData\Roaming\c5e4gxfvd4v\ximo2ubzn1i.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
PID 32 wrote to memory of 3352 N/A C:\Users\Admin\AppData\Roaming\c5e4gxfvd4v\ximo2ubzn1i.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
PID 32 wrote to memory of 3352 N/A C:\Users\Admin\AppData\Roaming\c5e4gxfvd4v\ximo2ubzn1i.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
PID 32 wrote to memory of 3352 N/A C:\Users\Admin\AppData\Roaming\c5e4gxfvd4v\ximo2ubzn1i.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
PID 32 wrote to memory of 3352 N/A C:\Users\Admin\AppData\Roaming\c5e4gxfvd4v\ximo2ubzn1i.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
PID 32 wrote to memory of 3352 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\a634052144ca4c55b40b8a317b87b96ee607247fabc2be5147b4366f68736343.exe

"C:\Users\Admin\AppData\Local\Temp\a634052144ca4c55b40b8a317b87b96ee607247fabc2be5147b4366f68736343.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 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 97.17.167.52.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 2.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 196.249.167.52.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 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
FR 178.32.224.116:46218 tcp
FR 178.32.224.116:46218 tcp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
FR 178.32.224.116:46218 tcp
US 8.8.8.8:53 31.243.111.52.in-addr.arpa udp
FR 178.32.224.116:46218 tcp
FR 178.32.224.116:46218 tcp

Files

memory/1144-0-0x00000000745BE000-0x00000000745BF000-memory.dmp

memory/1144-1-0x0000000000BB0000-0x0000000000C1E000-memory.dmp

memory/1144-2-0x0000000005AF0000-0x0000000006094000-memory.dmp

memory/1144-3-0x0000000005620000-0x00000000056B2000-memory.dmp

memory/1144-4-0x00000000056C0000-0x00000000056CA000-memory.dmp

memory/1144-5-0x00000000745B0000-0x0000000074D60000-memory.dmp

memory/1144-6-0x00000000061A0000-0x00000000061DC000-memory.dmp

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

MD5 af3ab21fe1bda40d5d300ad969d09c5a
SHA1 3982e75171630e2ed5182aee503011fc2b8868c4
SHA256 6f68587eabc87326eb73022ef3a49ac29beaccb31dafb2c1d150b79fc5dd26c3
SHA512 3edcf493e1fb73519304a36b551d729fd4a5d206e40238ba165f2298804bdae58c32205a19d52ceba8b92a76d1e06954c6e41b7df1c12137d9c7582e678f5dbf

memory/1144-20-0x00000000745B0000-0x0000000074D60000-memory.dmp

memory/32-21-0x00000000745B0000-0x0000000074D60000-memory.dmp

memory/32-22-0x00000000745B0000-0x0000000074D60000-memory.dmp

memory/3352-25-0x0000000000400000-0x0000000000438000-memory.dmp

memory/3352-23-0x0000000000400000-0x0000000000438000-memory.dmp

memory/3352-24-0x0000000000400000-0x0000000000438000-memory.dmp

memory/3352-27-0x00000000745B0000-0x0000000074D60000-memory.dmp

memory/3352-28-0x0000000005110000-0x00000000051AC000-memory.dmp

memory/3352-30-0x0000000005230000-0x000000000523A000-memory.dmp

memory/3352-31-0x0000000005240000-0x000000000525E000-memory.dmp

memory/3352-32-0x0000000005FA0000-0x0000000005FAA000-memory.dmp

memory/32-33-0x00000000745B0000-0x0000000074D60000-memory.dmp

memory/32-35-0x00000000745B0000-0x0000000074D60000-memory.dmp

memory/3352-36-0x00000000745B0000-0x0000000074D60000-memory.dmp