Malware Analysis Report

2024-10-19 07:05

Sample ID 240807-b3teas1ape
Target a992b7ef180c95750351ca6321342a4243d2d68eda90a9e680c688f799e1c0fe
SHA256 a992b7ef180c95750351ca6321342a4243d2d68eda90a9e680c688f799e1c0fe
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

a992b7ef180c95750351ca6321342a4243d2d68eda90a9e680c688f799e1c0fe

Threat Level: Known bad

The file a992b7ef180c95750351ca6321342a4243d2d68eda90a9e680c688f799e1c0fe 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

System Location Discovery: System Language Discovery

Unsigned PE

Enumerates physical storage devices

Suspicious use of WriteProcessMemory

Suspicious behavior: GetForegroundWindowSpam

Suspicious use of AdjustPrivilegeToken

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-08-07 01:40

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-08-07 01:40

Reported

2024-08-07 01:43

Platform

win7-20240729-en

Max time kernel

149s

Max time network

26s

Command Line

"C:\Users\Admin\AppData\Local\Temp\a992b7ef180c95750351ca6321342a4243d2d68eda90a9e680c688f799e1c0fe.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-1-5-21-2257386474-3982792636-3902186748-1000\Software\Microsoft\Windows\CurrentVersion\Run\b1b2dqljdx3 = "C:\\Users\\Admin\\AppData\\Roaming\\b1b2dqljdx3\\a1punf5t2of.exe" C:\Users\Admin\AppData\Local\Temp\a992b7ef180c95750351ca6321342a4243d2d68eda90a9e680c688f799e1c0fe.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 2772 set thread context of 2080 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\a992b7ef180c95750351ca6321342a4243d2d68eda90a9e680c688f799e1c0fe.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 2000 wrote to memory of 2772 N/A C:\Users\Admin\AppData\Local\Temp\a992b7ef180c95750351ca6321342a4243d2d68eda90a9e680c688f799e1c0fe.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
PID 2000 wrote to memory of 2772 N/A C:\Users\Admin\AppData\Local\Temp\a992b7ef180c95750351ca6321342a4243d2d68eda90a9e680c688f799e1c0fe.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
PID 2000 wrote to memory of 2772 N/A C:\Users\Admin\AppData\Local\Temp\a992b7ef180c95750351ca6321342a4243d2d68eda90a9e680c688f799e1c0fe.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
PID 2000 wrote to memory of 2772 N/A C:\Users\Admin\AppData\Local\Temp\a992b7ef180c95750351ca6321342a4243d2d68eda90a9e680c688f799e1c0fe.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
PID 2000 wrote to memory of 2772 N/A C:\Users\Admin\AppData\Local\Temp\a992b7ef180c95750351ca6321342a4243d2d68eda90a9e680c688f799e1c0fe.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
PID 2000 wrote to memory of 2772 N/A C:\Users\Admin\AppData\Local\Temp\a992b7ef180c95750351ca6321342a4243d2d68eda90a9e680c688f799e1c0fe.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
PID 2000 wrote to memory of 2772 N/A C:\Users\Admin\AppData\Local\Temp\a992b7ef180c95750351ca6321342a4243d2d68eda90a9e680c688f799e1c0fe.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
PID 2772 wrote to memory of 2080 N/A C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
PID 2772 wrote to memory of 2080 N/A C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
PID 2772 wrote to memory of 2080 N/A C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
PID 2772 wrote to memory of 2080 N/A C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
PID 2772 wrote to memory of 2080 N/A C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
PID 2772 wrote to memory of 2080 N/A C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
PID 2772 wrote to memory of 2080 N/A C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
PID 2772 wrote to memory of 2080 N/A C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
PID 2772 wrote to memory of 2080 N/A C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
PID 2772 wrote to memory of 2080 N/A C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
PID 2772 wrote to memory of 2080 N/A C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
PID 2772 wrote to memory of 2080 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\a992b7ef180c95750351ca6321342a4243d2d68eda90a9e680c688f799e1c0fe.exe

"C:\Users\Admin\AppData\Local\Temp\a992b7ef180c95750351ca6321342a4243d2d68eda90a9e680c688f799e1c0fe.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/2000-0-0x00000000749C1000-0x00000000749C2000-memory.dmp

memory/2000-1-0x00000000749C0000-0x0000000074F6B000-memory.dmp

memory/2000-2-0x00000000749C0000-0x0000000074F6B000-memory.dmp

memory/2000-3-0x00000000749C0000-0x0000000074F6B000-memory.dmp

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

MD5 b5b8cb84d5c34cc3dc22d4b874ab8ee8
SHA1 568f0eab3ff5b6d0f0fba02f3b3e30651a6d0bbe
SHA256 e0bf76582bafdfab449000b02b683f3449a34734e29fb4b07d8110c6df809818
SHA512 e09a1f27a05e13db222c7c610a9b21e3089a036e01c323d4d75716ab5beee36d01da827d4af3a5785eb9f3a71febc00d48fe0100607f068dc7e049cbf8f7efd9

memory/2000-12-0x00000000749C0000-0x0000000074F6B000-memory.dmp

memory/2772-13-0x00000000749C0000-0x0000000074F6B000-memory.dmp

memory/2772-14-0x00000000749C0000-0x0000000074F6B000-memory.dmp

memory/2772-15-0x00000000749C0000-0x0000000074F6B000-memory.dmp

memory/2772-16-0x00000000749C0000-0x0000000074F6B000-memory.dmp

memory/2080-19-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2080-18-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2080-34-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2080-32-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2080-27-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

memory/2080-26-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2080-24-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2080-21-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2772-36-0x00000000749C0000-0x0000000074F6B000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-08-07 01:40

Reported

2024-08-07 01:43

Platform

win10v2004-20240802-en

Max time kernel

93s

Max time network

126s

Command Line

"C:\Users\Admin\AppData\Local\Temp\a992b7ef180c95750351ca6321342a4243d2d68eda90a9e680c688f799e1c0fe.exe"

Signatures

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-786284298-625481688-3210388970-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\a992b7ef180c95750351ca6321342a4243d2d68eda90a9e680c688f799e1c0fe.exe N/A

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-1-5-21-786284298-625481688-3210388970-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\b1b2dqljdx3 = "C:\\Users\\Admin\\AppData\\Roaming\\b1b2dqljdx3\\a1punf5t2of.exe" C:\Users\Admin\AppData\Local\Temp\a992b7ef180c95750351ca6321342a4243d2d68eda90a9e680c688f799e1c0fe.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\a992b7ef180c95750351ca6321342a4243d2d68eda90a9e680c688f799e1c0fe.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\a992b7ef180c95750351ca6321342a4243d2d68eda90a9e680c688f799e1c0fe.exe

"C:\Users\Admin\AppData\Local\Temp\a992b7ef180c95750351ca6321342a4243d2d68eda90a9e680c688f799e1c0fe.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 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 133.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 55.36.223.20.in-addr.arpa udp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 99.58.20.217.in-addr.arpa udp
US 8.8.8.8:53 13.227.111.52.in-addr.arpa udp

Files

memory/3708-0-0x0000000075252000-0x0000000075253000-memory.dmp

memory/3708-1-0x0000000075250000-0x0000000075801000-memory.dmp

memory/3708-2-0x0000000075250000-0x0000000075801000-memory.dmp

memory/3708-3-0x0000000075250000-0x0000000075801000-memory.dmp

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

MD5 58ea741c55db9f4f288cc65356fda24a
SHA1 e3af527bd051390e4829b87ac1e186a09d2a1a92
SHA256 6738e37bb831c4f118650b5cd7ae76326e08b384b345e694f878c9bc1a7bb777
SHA512 817164e871c4304388877cd1351360c221cef3cbb6da5354729d1456ee19145bb0a5a976dcf93b4dda33fbbfb7b29a5ef45bd7f291341d06c4573ff6b5b55543

memory/4988-17-0x0000000075250000-0x0000000075801000-memory.dmp

memory/3708-18-0x0000000075250000-0x0000000075801000-memory.dmp

memory/4988-19-0x0000000075250000-0x0000000075801000-memory.dmp

memory/4988-20-0x0000000075250000-0x0000000075801000-memory.dmp

memory/4988-21-0x0000000075250000-0x0000000075801000-memory.dmp

memory/4988-23-0x0000000075250000-0x0000000075801000-memory.dmp