Malware Analysis Report

2025-04-13 20:47

Sample ID 250127-kab4zszjht
Target 58a80eca0bf2a952d1538709e9f3bef8b23394ff9ded7658b8c46836abc9a2c4N.exe
SHA256 58a80eca0bf2a952d1538709e9f3bef8b23394ff9ded7658b8c46836abc9a2c4
Tags
discovery persistence nanocore defense_evasion keylogger 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

58a80eca0bf2a952d1538709e9f3bef8b23394ff9ded7658b8c46836abc9a2c4

Threat Level: Known bad

The file 58a80eca0bf2a952d1538709e9f3bef8b23394ff9ded7658b8c46836abc9a2c4N.exe was found to be: Known bad.

Malicious Activity Summary

discovery persistence nanocore defense_evasion keylogger spyware stealer trojan

NanoCore

Nanocore family

Loads dropped DLL

Checks computer location settings

Executes dropped EXE

Checks whether UAC is enabled

Adds Run key to start application

Suspicious use of SetThreadContext

System Location Discovery: System Language Discovery

Unsigned PE

Enumerates physical storage devices

Suspicious behavior: GetForegroundWindowSpam

Suspicious use of WriteProcessMemory

Suspicious use of AdjustPrivilegeToken

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2025-01-27 08:23

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2025-01-27 08:23

Reported

2025-01-27 08:25

Platform

win7-20240903-en

Max time kernel

119s

Max time network

120s

Command Line

"C:\Users\Admin\AppData\Local\Temp\58a80eca0bf2a952d1538709e9f3bef8b23394ff9ded7658b8c46836abc9a2c4N.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-1-5-21-3290804112-2823094203-3137964600-1000\Software\Microsoft\Windows\CurrentVersion\Run\b1b2dqljdx3 = "C:\\Users\\Admin\\AppData\\Roaming\\b1b2dqljdx3\\a1punf5t2of.exe" C:\Users\Admin\AppData\Local\Temp\58a80eca0bf2a952d1538709e9f3bef8b23394ff9ded7658b8c46836abc9a2c4N.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\58a80eca0bf2a952d1538709e9f3bef8b23394ff9ded7658b8c46836abc9a2c4N.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 2656 wrote to memory of 3016 N/A C:\Users\Admin\AppData\Local\Temp\58a80eca0bf2a952d1538709e9f3bef8b23394ff9ded7658b8c46836abc9a2c4N.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
PID 2656 wrote to memory of 3016 N/A C:\Users\Admin\AppData\Local\Temp\58a80eca0bf2a952d1538709e9f3bef8b23394ff9ded7658b8c46836abc9a2c4N.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
PID 2656 wrote to memory of 3016 N/A C:\Users\Admin\AppData\Local\Temp\58a80eca0bf2a952d1538709e9f3bef8b23394ff9ded7658b8c46836abc9a2c4N.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
PID 2656 wrote to memory of 3016 N/A C:\Users\Admin\AppData\Local\Temp\58a80eca0bf2a952d1538709e9f3bef8b23394ff9ded7658b8c46836abc9a2c4N.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
PID 2656 wrote to memory of 3016 N/A C:\Users\Admin\AppData\Local\Temp\58a80eca0bf2a952d1538709e9f3bef8b23394ff9ded7658b8c46836abc9a2c4N.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
PID 2656 wrote to memory of 3016 N/A C:\Users\Admin\AppData\Local\Temp\58a80eca0bf2a952d1538709e9f3bef8b23394ff9ded7658b8c46836abc9a2c4N.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
PID 2656 wrote to memory of 3016 N/A C:\Users\Admin\AppData\Local\Temp\58a80eca0bf2a952d1538709e9f3bef8b23394ff9ded7658b8c46836abc9a2c4N.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
PID 3016 wrote to memory of 1748 N/A C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
PID 3016 wrote to memory of 1748 N/A C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
PID 3016 wrote to memory of 1748 N/A C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
PID 3016 wrote to memory of 1748 N/A C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
PID 3016 wrote to memory of 1748 N/A C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
PID 3016 wrote to memory of 1748 N/A C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
PID 3016 wrote to memory of 1748 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\58a80eca0bf2a952d1538709e9f3bef8b23394ff9ded7658b8c46836abc9a2c4N.exe

"C:\Users\Admin\AppData\Local\Temp\58a80eca0bf2a952d1538709e9f3bef8b23394ff9ded7658b8c46836abc9a2c4N.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/2656-0-0x0000000074971000-0x0000000074972000-memory.dmp

memory/2656-1-0x0000000074970000-0x0000000074F1B000-memory.dmp

memory/2656-2-0x0000000074970000-0x0000000074F1B000-memory.dmp

memory/2656-3-0x0000000074970000-0x0000000074F1B000-memory.dmp

memory/2656-4-0x0000000074970000-0x0000000074F1B000-memory.dmp

memory/2656-5-0x0000000074970000-0x0000000074F1B000-memory.dmp

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

MD5 ae5608c9ddc01edcdff3d24a88969530
SHA1 c84c225b966e195cae89f24642088d724a58aec5
SHA256 045ecc4b0ff5f8e4f86a862a352ff3a268b29cbe04dd4ce13268f1fe45f2eaef
SHA512 8bce796efb50778ed59e1cc76fdea507870c23fa363d2762ce6f2e77e78b429a8c958b0e4a6270bc7ed2419c538ae8c556de4a62b569fea1eea8494ee106e8d8

memory/2656-14-0x0000000074970000-0x0000000074F1B000-memory.dmp

memory/3016-15-0x0000000074970000-0x0000000074F1B000-memory.dmp

memory/3016-16-0x0000000074970000-0x0000000074F1B000-memory.dmp

memory/3016-17-0x0000000074970000-0x0000000074F1B000-memory.dmp

memory/3016-18-0x0000000074970000-0x0000000074F1B000-memory.dmp

memory/3016-19-0x0000000074970000-0x0000000074F1B000-memory.dmp

memory/3016-21-0x0000000074970000-0x0000000074F1B000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2025-01-27 08:23

Reported

2025-01-27 08:25

Platform

win10v2004-20241007-en

Max time kernel

116s

Max time network

94s

Command Line

"C:\Users\Admin\AppData\Local\Temp\58a80eca0bf2a952d1538709e9f3bef8b23394ff9ded7658b8c46836abc9a2c4N.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-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\58a80eca0bf2a952d1538709e9f3bef8b23394ff9ded7658b8c46836abc9a2c4N.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-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\b1b2dqljdx3 = "C:\\Users\\Admin\\AppData\\Roaming\\b1b2dqljdx3\\a1punf5t2of.exe" C:\Users\Admin\AppData\Local\Temp\58a80eca0bf2a952d1538709e9f3bef8b23394ff9ded7658b8c46836abc9a2c4N.exe N/A

Checks whether UAC is enabled

defense_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 2076 set thread context of 1800 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\58a80eca0bf2a952d1538709e9f3bef8b23394ff9ded7658b8c46836abc9a2c4N.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 4792 wrote to memory of 2076 N/A C:\Users\Admin\AppData\Local\Temp\58a80eca0bf2a952d1538709e9f3bef8b23394ff9ded7658b8c46836abc9a2c4N.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
PID 4792 wrote to memory of 2076 N/A C:\Users\Admin\AppData\Local\Temp\58a80eca0bf2a952d1538709e9f3bef8b23394ff9ded7658b8c46836abc9a2c4N.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
PID 4792 wrote to memory of 2076 N/A C:\Users\Admin\AppData\Local\Temp\58a80eca0bf2a952d1538709e9f3bef8b23394ff9ded7658b8c46836abc9a2c4N.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
PID 2076 wrote to memory of 1800 N/A C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
PID 2076 wrote to memory of 1800 N/A C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
PID 2076 wrote to memory of 1800 N/A C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
PID 2076 wrote to memory of 1800 N/A C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
PID 2076 wrote to memory of 1800 N/A C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
PID 2076 wrote to memory of 1800 N/A C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
PID 2076 wrote to memory of 1800 N/A C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
PID 2076 wrote to memory of 1800 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\58a80eca0bf2a952d1538709e9f3bef8b23394ff9ded7658b8c46836abc9a2c4N.exe

"C:\Users\Admin\AppData\Local\Temp\58a80eca0bf2a952d1538709e9f3bef8b23394ff9ded7658b8c46836abc9a2c4N.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 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
US 8.8.8.8:53 182.129.81.91.in-addr.arpa udp
US 8.8.8.8:53 73.190.17.2.in-addr.arpa udp
US 8.8.8.8:53 20.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 sysupdate24.ddns.net udp
US 8.8.8.8:53 197.87.175.4.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp

Files

memory/4792-0-0x0000000074C52000-0x0000000074C53000-memory.dmp

memory/4792-1-0x0000000074C50000-0x0000000075201000-memory.dmp

memory/4792-2-0x0000000074C50000-0x0000000075201000-memory.dmp

memory/4792-3-0x0000000074C50000-0x0000000075201000-memory.dmp

memory/4792-4-0x0000000074C52000-0x0000000074C53000-memory.dmp

memory/4792-5-0x0000000074C50000-0x0000000075201000-memory.dmp

memory/4792-6-0x0000000074C50000-0x0000000075201000-memory.dmp

memory/4792-7-0x0000000074C50000-0x0000000075201000-memory.dmp

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

MD5 f6bc689567c63177b1a146c8148282ae
SHA1 2982abd06a59a81683fe7030df86ca226e03f599
SHA256 57f839013a052fa8f9f147e82cc25cb628d2dc42e5415faf2fc608c1caabf627
SHA512 5efba45e29934fc865b14f0e9ec2b87ca8f63657f2b93fd54f02f81edec51160b7638ca6cd4112f59ab55a997503e0ee9acda551fadbabd173874f0d51585960

memory/2076-22-0x0000000074C50000-0x0000000075201000-memory.dmp

memory/4792-21-0x0000000074C50000-0x0000000075201000-memory.dmp

memory/2076-23-0x0000000074C50000-0x0000000075201000-memory.dmp

memory/2076-24-0x0000000074C50000-0x0000000075201000-memory.dmp

memory/2076-25-0x0000000074C50000-0x0000000075201000-memory.dmp

memory/2076-26-0x0000000074C50000-0x0000000075201000-memory.dmp

memory/1800-27-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1800-29-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1800-28-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1800-32-0x0000000074C50000-0x0000000075201000-memory.dmp

memory/1800-34-0x0000000074C50000-0x0000000075201000-memory.dmp

memory/1800-33-0x0000000074C50000-0x0000000075201000-memory.dmp

memory/1800-36-0x0000000074C50000-0x0000000075201000-memory.dmp

memory/1800-37-0x0000000074C50000-0x0000000075201000-memory.dmp

memory/2076-39-0x0000000074C50000-0x0000000075201000-memory.dmp

memory/1800-40-0x0000000074C50000-0x0000000075201000-memory.dmp