Malware Analysis Report

2024-10-19 07:05

Sample ID 240806-skcr9sscrn
Target c28d8f0154ef63cbc5f84f8e9940a840N.exe
SHA256 0c4c5d4afa47499f0b32310b8c6b042f55e8d3358096eb24706ebb199b2b7d2d
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: 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

0c4c5d4afa47499f0b32310b8c6b042f55e8d3358096eb24706ebb199b2b7d2d

Threat Level: Known bad

The file c28d8f0154ef63cbc5f84f8e9940a840N.exe was found to be: Known bad.

Malicious Activity Summary

nanocore discovery evasion keylogger persistence spyware stealer trojan

NanoCore

Loads dropped DLL

Executes dropped EXE

Checks computer location settings

Adds Run key to start application

Checks whether UAC is enabled

Suspicious use of SetThreadContext

Unsigned PE

Enumerates physical storage devices

System Location Discovery: System Language Discovery

Suspicious behavior: GetForegroundWindowSpam

Suspicious use of AdjustPrivilegeToken

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-08-06 15:10

Signatures

Unsigned PE

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

Analysis: behavioral2

Detonation Overview

Submitted

2024-08-06 15:10

Reported

2024-08-06 15:12

Platform

win10v2004-20240802-en

Max time kernel

119s

Max time network

95s

Command Line

"C:\Users\Admin\AppData\Local\Temp\c28d8f0154ef63cbc5f84f8e9940a840N.exe"

Signatures

NanoCore

keylogger trojan stealer spyware nanocore

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-1194130065-3471212556-1656947724-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\c28d8f0154ef63cbc5f84f8e9940a840N.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-1194130065-3471212556-1656947724-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\b1b2dqljdx3 = "C:\\Users\\Admin\\AppData\\Roaming\\b1b2dqljdx3\\a1punf5t2of.exe" C:\Users\Admin\AppData\Local\Temp\c28d8f0154ef63cbc5f84f8e9940a840N.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:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 2336 set thread context of 3848 N/A C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.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\b1b2dqljdx3\a1punf5t2of.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\c28d8f0154ef63cbc5f84f8e9940a840N.exe N/A

Suspicious behavior: GetForegroundWindowSpam

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4956 wrote to memory of 2336 N/A C:\Users\Admin\AppData\Local\Temp\c28d8f0154ef63cbc5f84f8e9940a840N.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
PID 4956 wrote to memory of 2336 N/A C:\Users\Admin\AppData\Local\Temp\c28d8f0154ef63cbc5f84f8e9940a840N.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
PID 4956 wrote to memory of 2336 N/A C:\Users\Admin\AppData\Local\Temp\c28d8f0154ef63cbc5f84f8e9940a840N.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
PID 2336 wrote to memory of 3848 N/A C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
PID 2336 wrote to memory of 3848 N/A C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
PID 2336 wrote to memory of 3848 N/A C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
PID 2336 wrote to memory of 3848 N/A C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
PID 2336 wrote to memory of 3848 N/A C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
PID 2336 wrote to memory of 3848 N/A C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
PID 2336 wrote to memory of 3848 N/A C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
PID 2336 wrote to memory of 3848 N/A C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe

Processes

C:\Users\Admin\AppData\Local\Temp\c28d8f0154ef63cbc5f84f8e9940a840N.exe

"C:\Users\Admin\AppData\Local\Temp\c28d8f0154ef63cbc5f84f8e9940a840N.exe"

C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe

"C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe"

C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe

"C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.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 3.181.190.20.in-addr.arpa udp
US 8.8.8.8:53 79.190.18.2.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
US 8.8.8.8:53 sysupdate24.ddns.net 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 8.8.8.8:53 73.190.18.2.in-addr.arpa udp
US 8.8.8.8:53 77.190.18.2.in-addr.arpa udp
US 8.8.8.8:53 31.243.111.52.in-addr.arpa udp

Files

memory/4956-0-0x0000000074852000-0x0000000074853000-memory.dmp

memory/4956-1-0x0000000074850000-0x0000000074E01000-memory.dmp

memory/4956-2-0x0000000074850000-0x0000000074E01000-memory.dmp

memory/4956-3-0x0000000074850000-0x0000000074E01000-memory.dmp

C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe

MD5 8bb2acedf6f8226c32cb5c41400d776e
SHA1 260b7a30ed09eac1f1b58bc6e83108aff9877b3c
SHA256 dd94a4579455adafa554498010fcff16e5f14539498ef7e61df58c5328ff38e8
SHA512 4b3005c8f929a5f61b85d309274f9fd6ff365b6117e4ed75dcd52e80a68df986cb492db3c6ca385512ab1f8c1c793044e1c685e844ec6d10e95aaeedeb4b9500

memory/4956-18-0x0000000074850000-0x0000000074E01000-memory.dmp

memory/2336-17-0x0000000074850000-0x0000000074E01000-memory.dmp

memory/2336-19-0x0000000074850000-0x0000000074E01000-memory.dmp

memory/3848-20-0x0000000000400000-0x0000000000438000-memory.dmp

memory/3848-22-0x0000000000400000-0x0000000000438000-memory.dmp

memory/3848-21-0x0000000000400000-0x0000000000438000-memory.dmp

memory/3848-26-0x0000000074850000-0x0000000074E01000-memory.dmp

memory/3848-25-0x0000000074850000-0x0000000074E01000-memory.dmp

memory/3848-27-0x0000000074850000-0x0000000074E01000-memory.dmp

memory/3848-29-0x0000000074850000-0x0000000074E01000-memory.dmp

memory/2336-30-0x0000000074850000-0x0000000074E01000-memory.dmp

memory/2336-32-0x0000000074850000-0x0000000074E01000-memory.dmp

memory/3848-33-0x0000000074850000-0x0000000074E01000-memory.dmp

memory/3848-34-0x0000000074850000-0x0000000074E01000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-08-06 15:10

Reported

2024-08-06 15:12

Platform

win7-20240708-en

Max time kernel

117s

Max time network

119s

Command Line

"C:\Users\Admin\AppData\Local\Temp\c28d8f0154ef63cbc5f84f8e9940a840N.exe"

Signatures

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-1506706701-1246725540-2219210854-1000\Software\Microsoft\Windows\CurrentVersion\Run\b1b2dqljdx3 = "C:\\Users\\Admin\\AppData\\Roaming\\b1b2dqljdx3\\a1punf5t2of.exe" C:\Users\Admin\AppData\Local\Temp\c28d8f0154ef63cbc5f84f8e9940a840N.exe N/A

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\c28d8f0154ef63cbc5f84f8e9940a840N.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2644 wrote to memory of 1528 N/A C:\Users\Admin\AppData\Local\Temp\c28d8f0154ef63cbc5f84f8e9940a840N.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
PID 2644 wrote to memory of 1528 N/A C:\Users\Admin\AppData\Local\Temp\c28d8f0154ef63cbc5f84f8e9940a840N.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
PID 2644 wrote to memory of 1528 N/A C:\Users\Admin\AppData\Local\Temp\c28d8f0154ef63cbc5f84f8e9940a840N.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
PID 2644 wrote to memory of 1528 N/A C:\Users\Admin\AppData\Local\Temp\c28d8f0154ef63cbc5f84f8e9940a840N.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
PID 2644 wrote to memory of 1528 N/A C:\Users\Admin\AppData\Local\Temp\c28d8f0154ef63cbc5f84f8e9940a840N.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
PID 2644 wrote to memory of 1528 N/A C:\Users\Admin\AppData\Local\Temp\c28d8f0154ef63cbc5f84f8e9940a840N.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
PID 2644 wrote to memory of 1528 N/A C:\Users\Admin\AppData\Local\Temp\c28d8f0154ef63cbc5f84f8e9940a840N.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
PID 1528 wrote to memory of 2716 N/A C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
PID 1528 wrote to memory of 2716 N/A C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
PID 1528 wrote to memory of 2716 N/A C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
PID 1528 wrote to memory of 2716 N/A C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
PID 1528 wrote to memory of 2716 N/A C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
PID 1528 wrote to memory of 2716 N/A C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
PID 1528 wrote to memory of 2716 N/A C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe

Processes

C:\Users\Admin\AppData\Local\Temp\c28d8f0154ef63cbc5f84f8e9940a840N.exe

"C:\Users\Admin\AppData\Local\Temp\c28d8f0154ef63cbc5f84f8e9940a840N.exe"

C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe

"C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe"

C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe

"C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe"

Network

N/A

Files

memory/2644-0-0x0000000074711000-0x0000000074712000-memory.dmp

memory/2644-1-0x0000000074710000-0x0000000074CBB000-memory.dmp

memory/2644-2-0x0000000074710000-0x0000000074CBB000-memory.dmp

memory/2644-3-0x0000000074710000-0x0000000074CBB000-memory.dmp

\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe

MD5 2f4de5f7987ec31d9111de1bdb71b5af
SHA1 46a07abd0b5824dd37e5b0f594ea3f2e421541d9
SHA256 1b2c385c809accbdfe51445bf60e35eb7f7773094c539096de4b9e6d8c433d12
SHA512 4907dc0b2c8330fa72cd021ddb404a15d40cc8a996e4c8217396ba4ad7e0b6b3eba4b3d690e03de493f8d2bfbf8c7ca021d79ee1b5db8ce07897c9b20d3b6299

memory/1528-13-0x0000000074710000-0x0000000074CBB000-memory.dmp

memory/2644-12-0x0000000074710000-0x0000000074CBB000-memory.dmp

memory/1528-14-0x0000000074710000-0x0000000074CBB000-memory.dmp

memory/1528-16-0x0000000074710000-0x0000000074CBB000-memory.dmp