Malware Analysis Report

2025-06-16 06:21

Sample ID 231203-v27ebadg76
Target DC1635104FF64D96E711BBE22D2EE026B01D36F10A845.exe
SHA256 dc1635104ff64d96e711bbe22d2ee026b01d36f10a84555f75b1a4634d34108f
Tags
zgrat nanocore 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

dc1635104ff64d96e711bbe22d2ee026b01d36f10a84555f75b1a4634d34108f

Threat Level: Known bad

The file DC1635104FF64D96E711BBE22D2EE026B01D36F10A845.exe was found to be: Known bad.

Malicious Activity Summary

zgrat nanocore evasion keylogger persistence spyware stealer trojan

Detect ZGRat V1

NanoCore

Nanocore family

Zgrat family

.NET Reactor proctector

Adds Run key to start application

Checks whether UAC is enabled

Drops file in Program Files directory

Unsigned PE

Suspicious behavior: GetForegroundWindowSpam

Suspicious use of AdjustPrivilegeToken

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2023-12-03 17:30

Signatures

Detect ZGRat V1

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

Nanocore family

nanocore

Zgrat family

zgrat

.NET Reactor proctector

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

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2023-12-03 17:30

Reported

2023-12-03 17:32

Platform

win7-20231130-en

Max time kernel

145s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\DC1635104FF64D96E711BBE22D2EE026B01D36F10A845.exe"

Signatures

NanoCore

keylogger trojan stealer spyware nanocore

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\IMAP Subsystem = "C:\\Program Files (x86)\\IMAP Subsystem\\imapss.exe" C:\Users\Admin\AppData\Local\Temp\DC1635104FF64D96E711BBE22D2EE026B01D36F10A845.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\Local\Temp\DC1635104FF64D96E711BBE22D2EE026B01D36F10A845.exe N/A

Drops file in Program Files directory

Description Indicator Process Target
File created C:\Program Files (x86)\IMAP Subsystem\imapss.exe C:\Users\Admin\AppData\Local\Temp\DC1635104FF64D96E711BBE22D2EE026B01D36F10A845.exe N/A
File opened for modification C:\Program Files (x86)\IMAP Subsystem\imapss.exe C:\Users\Admin\AppData\Local\Temp\DC1635104FF64D96E711BBE22D2EE026B01D36F10A845.exe N/A

Suspicious behavior: GetForegroundWindowSpam

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\DC1635104FF64D96E711BBE22D2EE026B01D36F10A845.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\DC1635104FF64D96E711BBE22D2EE026B01D36F10A845.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\DC1635104FF64D96E711BBE22D2EE026B01D36F10A845.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\DC1635104FF64D96E711BBE22D2EE026B01D36F10A845.exe

"C:\Users\Admin\AppData\Local\Temp\DC1635104FF64D96E711BBE22D2EE026B01D36F10A845.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 anunankis1.duckdns.org udp
US 8.8.4.4:53 anunankis1.duckdns.org udp
US 8.8.8.8:53 anunankis1.duckdns.org udp
US 8.8.8.8:53 anunankis1.duckdns.org udp
US 8.8.4.4:53 anunankis1.duckdns.org udp
US 8.8.8.8:53 anunankis1.duckdns.org udp
US 8.8.8.8:53 anunankis1.duckdns.org udp
US 8.8.4.4:53 anunankis1.duckdns.org udp
US 8.8.8.8:53 anunankis1.duckdns.org udp
US 8.8.8.8:53 anunankis111.duckdns.org udp
US 8.8.4.4:53 anunankis111.duckdns.org udp
US 8.8.8.8:53 anunankis111.duckdns.org udp

Files

memory/848-1-0x0000000000D60000-0x0000000000DA0000-memory.dmp

memory/848-0-0x0000000074570000-0x0000000074B1B000-memory.dmp

memory/848-2-0x0000000074570000-0x0000000074B1B000-memory.dmp

memory/848-5-0x0000000074570000-0x0000000074B1B000-memory.dmp

memory/848-6-0x0000000000D60000-0x0000000000DA0000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2023-12-03 17:30

Reported

2023-12-03 17:32

Platform

win10v2004-20231127-en

Max time kernel

142s

Max time network

152s

Command Line

"C:\Users\Admin\AppData\Local\Temp\DC1635104FF64D96E711BBE22D2EE026B01D36F10A845.exe"

Signatures

NanoCore

keylogger trojan stealer spyware nanocore

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\SAAS Host = "C:\\Program Files (x86)\\SAAS Host\\saashost.exe" C:\Users\Admin\AppData\Local\Temp\DC1635104FF64D96E711BBE22D2EE026B01D36F10A845.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\Local\Temp\DC1635104FF64D96E711BBE22D2EE026B01D36F10A845.exe N/A

Drops file in Program Files directory

Description Indicator Process Target
File created C:\Program Files (x86)\SAAS Host\saashost.exe C:\Users\Admin\AppData\Local\Temp\DC1635104FF64D96E711BBE22D2EE026B01D36F10A845.exe N/A
File opened for modification C:\Program Files (x86)\SAAS Host\saashost.exe C:\Users\Admin\AppData\Local\Temp\DC1635104FF64D96E711BBE22D2EE026B01D36F10A845.exe N/A

Suspicious behavior: GetForegroundWindowSpam

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\DC1635104FF64D96E711BBE22D2EE026B01D36F10A845.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\DC1635104FF64D96E711BBE22D2EE026B01D36F10A845.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\DC1635104FF64D96E711BBE22D2EE026B01D36F10A845.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\DC1635104FF64D96E711BBE22D2EE026B01D36F10A845.exe

"C:\Users\Admin\AppData\Local\Temp\DC1635104FF64D96E711BBE22D2EE026B01D36F10A845.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 17.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 241.154.82.20.in-addr.arpa udp
US 8.8.8.8:53 anunankis1.duckdns.org udp
ES 83.213.157.103:5555 anunankis1.duckdns.org tcp
US 8.8.8.8:53 133.191.110.104.in-addr.arpa udp
US 8.8.8.8:53 226.173.246.72.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 103.157.213.83.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 200.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 169.153.247.72.in-addr.arpa udp
US 8.8.8.8:53 202.3.125.104.in-addr.arpa udp
US 8.8.8.8:53 43.229.111.52.in-addr.arpa udp
US 8.8.8.8:53 169.117.19.2.in-addr.arpa udp
US 8.8.8.8:53 4.173.189.20.in-addr.arpa udp

Files

memory/3972-0-0x0000000074BC0000-0x0000000075171000-memory.dmp

memory/3972-1-0x0000000074BC0000-0x0000000075171000-memory.dmp

memory/3972-2-0x0000000001750000-0x0000000001760000-memory.dmp

memory/3972-8-0x0000000074BC0000-0x0000000075171000-memory.dmp

memory/3972-9-0x0000000074BC0000-0x0000000075171000-memory.dmp

memory/3972-10-0x0000000001750000-0x0000000001760000-memory.dmp

memory/3972-11-0x0000000001750000-0x0000000001760000-memory.dmp