Malware Analysis Report

2024-10-19 07:05

Sample ID 240806-kwpbfayfnb
Target 87225db143a3c5bef68d42ae4fbbdf40N.exe
SHA256 a51c6f9b3e3e74a89aff54e5f6b68995db00f4c88701a2bbd29331a23c05afc8
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

a51c6f9b3e3e74a89aff54e5f6b68995db00f4c88701a2bbd29331a23c05afc8

Threat Level: Known bad

The file 87225db143a3c5bef68d42ae4fbbdf40N.exe was found to be: Known bad.

Malicious Activity Summary

nanocore discovery evasion keylogger persistence spyware stealer trojan

NanoCore

Checks computer location settings

Executes dropped EXE

Loads dropped DLL

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

2024-08-06 08:57

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-08-06 08:57

Reported

2024-08-06 08:59

Platform

win7-20240708-en

Max time kernel

117s

Max time network

26s

Command Line

"C:\Users\Admin\AppData\Local\Temp\87225db143a3c5bef68d42ae4fbbdf40N.exe"

Signatures

NanoCore

keylogger trojan stealer spyware nanocore

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-1-5-21-3551809350-4263495960-1443967649-1000\Software\Microsoft\Windows\CurrentVersion\Run\b1b2dqljdx3 = "C:\\Users\\Admin\\AppData\\Roaming\\b1b2dqljdx3\\a1punf5t2of.exe" C:\Users\Admin\AppData\Local\Temp\87225db143a3c5bef68d42ae4fbbdf40N.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 2712 set thread context of 1160 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\Local\Temp\87225db143a3c5bef68d42ae4fbbdf40N.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\Roaming\b1b2dqljdx3\a1punf5t2of.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 2332 wrote to memory of 2712 N/A C:\Users\Admin\AppData\Local\Temp\87225db143a3c5bef68d42ae4fbbdf40N.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
PID 2332 wrote to memory of 2712 N/A C:\Users\Admin\AppData\Local\Temp\87225db143a3c5bef68d42ae4fbbdf40N.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
PID 2332 wrote to memory of 2712 N/A C:\Users\Admin\AppData\Local\Temp\87225db143a3c5bef68d42ae4fbbdf40N.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
PID 2332 wrote to memory of 2712 N/A C:\Users\Admin\AppData\Local\Temp\87225db143a3c5bef68d42ae4fbbdf40N.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
PID 2332 wrote to memory of 2712 N/A C:\Users\Admin\AppData\Local\Temp\87225db143a3c5bef68d42ae4fbbdf40N.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
PID 2332 wrote to memory of 2712 N/A C:\Users\Admin\AppData\Local\Temp\87225db143a3c5bef68d42ae4fbbdf40N.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
PID 2332 wrote to memory of 2712 N/A C:\Users\Admin\AppData\Local\Temp\87225db143a3c5bef68d42ae4fbbdf40N.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
PID 2712 wrote to memory of 1160 N/A C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
PID 2712 wrote to memory of 1160 N/A C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
PID 2712 wrote to memory of 1160 N/A C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
PID 2712 wrote to memory of 1160 N/A C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
PID 2712 wrote to memory of 1160 N/A C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
PID 2712 wrote to memory of 1160 N/A C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
PID 2712 wrote to memory of 1160 N/A C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
PID 2712 wrote to memory of 1160 N/A C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
PID 2712 wrote to memory of 1160 N/A C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
PID 2712 wrote to memory of 1160 N/A C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
PID 2712 wrote to memory of 1160 N/A C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
PID 2712 wrote to memory of 1160 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\87225db143a3c5bef68d42ae4fbbdf40N.exe

"C:\Users\Admin\AppData\Local\Temp\87225db143a3c5bef68d42ae4fbbdf40N.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 sysupdate24.ddns.net udp

Files

memory/2332-0-0x0000000074301000-0x0000000074302000-memory.dmp

memory/2332-1-0x0000000074300000-0x00000000748AB000-memory.dmp

memory/2332-2-0x0000000074300000-0x00000000748AB000-memory.dmp

memory/2332-3-0x0000000074300000-0x00000000748AB000-memory.dmp

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

MD5 7e6de438a7e354c512f67b2b4cb62f9c
SHA1 e9d6246e4d59ea2dc73d351dba0672d929d98852
SHA256 06bc4c9a080d410bde9c0ba88564923276bcdfe544de50c52b75e20d0caae56a
SHA512 7b8de56d72cbd4e53f9ef164664bae57fb69d99a6b40a07d6cd2b5d189cb58bb33894697c462037d98df96da48c7b64d15ead7b9012b875c4cb20946a76e18c3

memory/2712-13-0x0000000074300000-0x00000000748AB000-memory.dmp

memory/2712-14-0x0000000074300000-0x00000000748AB000-memory.dmp

memory/2332-12-0x0000000074300000-0x00000000748AB000-memory.dmp

memory/2712-15-0x0000000074300000-0x00000000748AB000-memory.dmp

memory/1160-19-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1160-17-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1160-24-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1160-27-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

memory/1160-34-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1160-32-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1160-26-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1160-21-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2712-36-0x0000000074300000-0x00000000748AB000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-08-06 08:57

Reported

2024-08-06 08:59

Platform

win10v2004-20240802-en

Max time kernel

119s

Max time network

95s

Command Line

"C:\Users\Admin\AppData\Local\Temp\87225db143a3c5bef68d42ae4fbbdf40N.exe"

Signatures

NanoCore

keylogger trojan stealer spyware nanocore

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-1302416131-1437503476-2806442725-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\87225db143a3c5bef68d42ae4fbbdf40N.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-1-5-21-1302416131-1437503476-2806442725-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\b1b2dqljdx3 = "C:\\Users\\Admin\\AppData\\Roaming\\b1b2dqljdx3\\a1punf5t2of.exe" C:\Users\Admin\AppData\Local\Temp\87225db143a3c5bef68d42ae4fbbdf40N.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 628 set thread context of 1656 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\Local\Temp\87225db143a3c5bef68d42ae4fbbdf40N.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\Roaming\b1b2dqljdx3\a1punf5t2of.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 2472 wrote to memory of 628 N/A C:\Users\Admin\AppData\Local\Temp\87225db143a3c5bef68d42ae4fbbdf40N.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
PID 2472 wrote to memory of 628 N/A C:\Users\Admin\AppData\Local\Temp\87225db143a3c5bef68d42ae4fbbdf40N.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
PID 2472 wrote to memory of 628 N/A C:\Users\Admin\AppData\Local\Temp\87225db143a3c5bef68d42ae4fbbdf40N.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
PID 628 wrote to memory of 1656 N/A C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
PID 628 wrote to memory of 1656 N/A C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
PID 628 wrote to memory of 1656 N/A C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
PID 628 wrote to memory of 1656 N/A C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
PID 628 wrote to memory of 1656 N/A C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
PID 628 wrote to memory of 1656 N/A C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
PID 628 wrote to memory of 1656 N/A C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
PID 628 wrote to memory of 1656 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\87225db143a3c5bef68d42ae4fbbdf40N.exe

"C:\Users\Admin\AppData\Local\Temp\87225db143a3c5bef68d42ae4fbbdf40N.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 75.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 8.8.8.8.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 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 30.243.111.52.in-addr.arpa udp

Files

memory/2472-0-0x00000000748F2000-0x00000000748F3000-memory.dmp

memory/2472-1-0x00000000748F0000-0x0000000074EA1000-memory.dmp

memory/2472-2-0x00000000748F0000-0x0000000074EA1000-memory.dmp

memory/2472-3-0x00000000748F0000-0x0000000074EA1000-memory.dmp

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

MD5 058616289fa26417da1c3a92591b47f8
SHA1 5cde9a59cce131931fabece0a0fb8d4e7f1bd99c
SHA256 55ba0b09cdeaf7d08c141c18a15f823a7680b63cf82452857d4074e3c8308aab
SHA512 374003efd116a8df5ad4e99635aceacf4d7aa59375da9dfffed1468a7f842859d2ab7e394c27d44fe3c62d0545b116236b0117e6d8051c9922a44b996be78f6c

memory/628-18-0x00000000748F0000-0x0000000074EA1000-memory.dmp

memory/2472-17-0x00000000748F0000-0x0000000074EA1000-memory.dmp

memory/628-19-0x00000000748F0000-0x0000000074EA1000-memory.dmp

memory/628-20-0x00000000748F0000-0x0000000074EA1000-memory.dmp

memory/1656-23-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1656-21-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1656-22-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1656-26-0x00000000748F0000-0x0000000074EA1000-memory.dmp

memory/1656-27-0x00000000748F0000-0x0000000074EA1000-memory.dmp

memory/1656-29-0x00000000748F0000-0x0000000074EA1000-memory.dmp

memory/628-30-0x00000000748F0000-0x0000000074EA1000-memory.dmp

memory/628-32-0x00000000748F0000-0x0000000074EA1000-memory.dmp

memory/1656-33-0x00000000748F0000-0x0000000074EA1000-memory.dmp

memory/1656-34-0x00000000748F0000-0x0000000074EA1000-memory.dmp