Malware Analysis Report

2025-08-05 14:35

Sample ID 250702-x44sbazybx
Target 77ec7f7faaa3660f2521981552470f72a28fad840c6d3d0674033087fe16c859
SHA256 77ec7f7faaa3660f2521981552470f72a28fad840c6d3d0674033087fe16c859
Tags
discovery
score
7/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V16

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
7/10

SHA256

77ec7f7faaa3660f2521981552470f72a28fad840c6d3d0674033087fe16c859

Threat Level: Shows suspicious behavior

The file 77ec7f7faaa3660f2521981552470f72a28fad840c6d3d0674033087fe16c859 was found to be: Shows suspicious behavior.

Malicious Activity Summary

discovery

Executes dropped EXE

Unexpected DNS network traffic destination

Drops file in System32 directory

Drops file in Windows directory

System Location Discovery: System Language Discovery

Unsigned PE

Suspicious behavior: EnumeratesProcesses

Modifies data under HKEY_USERS

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2025-07-02 19:25

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2025-07-02 19:25

Reported

2025-07-02 19:27

Platform

win10v2004-20250610-en

Max time kernel

143s

Max time network

147s

Command Line

"C:\Users\Admin\AppData\Local\Temp\77ec7f7faaa3660f2521981552470f72a28fad840c6d3d0674033087fe16c859.exe"

Signatures

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Windows\Syswow64\3942b6f5 N/A

Drops file in System32 directory

Description Indicator Process Target
File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies C:\Windows\Syswow64\3942b6f5 N/A
File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5 C:\Windows\Syswow64\3942b6f5 N/A
File created C:\Windows\SysWOW64\3942b6f5 C:\Users\Admin\AppData\Local\Temp\77ec7f7faaa3660f2521981552470f72a28fad840c6d3d0674033087fe16c859.exe N/A
File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5 C:\Windows\Syswow64\3942b6f5 N/A
File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE C:\Windows\Syswow64\3942b6f5 N/A

Drops file in Windows directory

Description Indicator Process Target
File opened for modification C:\Windows\b2998 C:\Windows\Syswow64\3942b6f5 N/A
File opened for modification C:\Windows\194508 C:\Users\Admin\AppData\Local\Temp\77ec7f7faaa3660f2521981552470f72a28fad840c6d3d0674033087fe16c859.exe N/A

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\77ec7f7faaa3660f2521981552470f72a28fad840c6d3d0674033087fe16c859.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\Syswow64\3942b6f5 N/A

Modifies data under HKEY_USERS

Description Indicator Process Target
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ C:\Windows\Syswow64\3942b6f5 N/A
Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1" C:\Windows\Syswow64\3942b6f5 N/A
Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1" C:\Windows\Syswow64\3942b6f5 N/A
Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1" C:\Windows\Syswow64\3942b6f5 N/A
Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:" C:\Windows\Syswow64\3942b6f5 N/A
Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:" C:\Windows\Syswow64\3942b6f5 N/A
Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0" C:\Windows\Syswow64\3942b6f5 N/A
Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix C:\Windows\Syswow64\3942b6f5 N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\77ec7f7faaa3660f2521981552470f72a28fad840c6d3d0674033087fe16c859.exe N/A
Token: SeTcbPrivilege N/A C:\Users\Admin\AppData\Local\Temp\77ec7f7faaa3660f2521981552470f72a28fad840c6d3d0674033087fe16c859.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\Syswow64\3942b6f5 N/A
Token: SeTcbPrivilege N/A C:\Windows\Syswow64\3942b6f5 N/A

Processes

C:\Users\Admin\AppData\Local\Temp\77ec7f7faaa3660f2521981552470f72a28fad840c6d3d0674033087fe16c859.exe

"C:\Users\Admin\AppData\Local\Temp\77ec7f7faaa3660f2521981552470f72a28fad840c6d3d0674033087fe16c859.exe"

C:\Windows\Syswow64\3942b6f5

C:\Windows\Syswow64\3942b6f5

Network

Country Destination Domain Proto
CN 114.114.114.114:53 down.nugong.asia udp
CN 223.5.5.5:53 down.nugong.asia udp
US 8.8.8.8:53 down.nugong.asia udp
US 8.8.8.8:53 dns.alidns.com udp
CN 223.6.6.6:443 dns.alidns.com tcp
CN 223.5.5.5:443 dns.alidns.com tcp
CN 114.114.114.114:53 down.nugong.asia udp
CN 223.5.5.5:53 dns.alidns.com udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 down.nugong.asia udp
CN 223.6.6.6:443 dns.alidns.com tcp
CN 223.6.6.6:80 dns.alidns.com tcp
CN 223.5.5.5:443 dns.alidns.com tcp
US 8.8.8.8:53 c.pki.goog udp
GB 142.250.179.227:80 c.pki.goog tcp
CN 223.6.6.6:80 dns.alidns.com tcp
CN 223.5.5.5:80 dns.alidns.com tcp
CN 223.5.5.5:443 dns.alidns.com tcp
CN 223.5.5.5:80 dns.alidns.com tcp

Files

memory/1476-0-0x00000000007D0000-0x0000000000833000-memory.dmp

C:\Windows\SysWOW64\3942b6f5

MD5 44a11fba20fceb104ef77af5c7ee25d2
SHA1 2ba264948710cfe4e1a7016d88386c3d50fc9d5a
SHA256 b6477af9244e75d11316d1d10cf4d4e9f601b841c20e0ae81703bf71c0a2d23d
SHA512 d5a7c68f3e10398c7cc46907a7d3e65f79bd3fa45dc1195eff3ef479aee90a435e7834bd5fe929433f839083eee574e40ade0f29b2ddc02fe7c2359e0213193e

memory/652-4-0x0000000000380000-0x00000000003E3000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2025-07-02 19:25

Reported

2025-07-02 19:27

Platform

win11-20250610-en

Max time kernel

143s

Max time network

147s

Command Line

"C:\Users\Admin\AppData\Local\Temp\77ec7f7faaa3660f2521981552470f72a28fad840c6d3d0674033087fe16c859.exe"

Signatures

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Windows\Syswow64\eacf3d9c N/A

Drops file in System32 directory

Description Indicator Process Target
File created C:\Windows\SysWOW64\eacf3d9c C:\Users\Admin\AppData\Local\Temp\77ec7f7faaa3660f2521981552470f72a28fad840c6d3d0674033087fe16c859.exe N/A
File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5 C:\Windows\Syswow64\eacf3d9c N/A
File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE C:\Windows\Syswow64\eacf3d9c N/A
File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies C:\Windows\Syswow64\eacf3d9c N/A
File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5 C:\Windows\Syswow64\eacf3d9c N/A

Drops file in Windows directory

Description Indicator Process Target
File opened for modification C:\Windows\3f5868 C:\Windows\Syswow64\eacf3d9c N/A
File opened for modification C:\Windows\5d2280 C:\Users\Admin\AppData\Local\Temp\77ec7f7faaa3660f2521981552470f72a28fad840c6d3d0674033087fe16c859.exe N/A

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\Syswow64\eacf3d9c N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\77ec7f7faaa3660f2521981552470f72a28fad840c6d3d0674033087fe16c859.exe N/A

Modifies data under HKEY_USERS

Description Indicator Process Target
Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1" C:\Windows\Syswow64\eacf3d9c N/A
Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1" C:\Windows\Syswow64\eacf3d9c N/A
Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:" C:\Windows\Syswow64\eacf3d9c N/A
Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1" C:\Windows\Syswow64\eacf3d9c N/A
Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0" C:\Windows\Syswow64\eacf3d9c N/A
Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix C:\Windows\Syswow64\eacf3d9c N/A
Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:" C:\Windows\Syswow64\eacf3d9c N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ C:\Windows\Syswow64\eacf3d9c N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\77ec7f7faaa3660f2521981552470f72a28fad840c6d3d0674033087fe16c859.exe N/A
Token: SeTcbPrivilege N/A C:\Users\Admin\AppData\Local\Temp\77ec7f7faaa3660f2521981552470f72a28fad840c6d3d0674033087fe16c859.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\Syswow64\eacf3d9c N/A
Token: SeTcbPrivilege N/A C:\Windows\Syswow64\eacf3d9c N/A

Processes

C:\Users\Admin\AppData\Local\Temp\77ec7f7faaa3660f2521981552470f72a28fad840c6d3d0674033087fe16c859.exe

"C:\Users\Admin\AppData\Local\Temp\77ec7f7faaa3660f2521981552470f72a28fad840c6d3d0674033087fe16c859.exe"

C:\Windows\Syswow64\eacf3d9c

C:\Windows\Syswow64\eacf3d9c

Network

Country Destination Domain Proto
CN 114.114.114.114:53 down.nugong.asia udp
CN 223.5.5.5:53 dns.alidns.com udp
CN 223.6.6.6:443 dns.alidns.com tcp
CN 223.5.5.5:443 dns.alidns.com tcp
CN 114.114.114.114:53 down.nugong.asia udp
CN 223.5.5.5:53 dns.alidns.com udp
CN 223.6.6.6:443 dns.alidns.com tcp
CN 223.6.6.6:80 dns.alidns.com tcp
CN 223.5.5.5:443 dns.alidns.com tcp
CN 223.6.6.6:80 dns.alidns.com tcp
CN 223.5.5.5:80 dns.alidns.com tcp
CN 223.5.5.5:443 dns.alidns.com tcp
CN 223.5.5.5:80 dns.alidns.com tcp

Files

memory/5440-0-0x0000000000CC0000-0x0000000000D23000-memory.dmp

C:\Windows\SysWOW64\eacf3d9c

MD5 1081741d546b0a9e50a243e46b2518cb
SHA1 f0f793a1b76dd9692862e48ec64fea66b5f6154d
SHA256 26bb28ba3ec301fdec433448aa3ed7175c519b4febef6496e119037a37e366aa
SHA512 1a10ba91a3e0244552ff49fd7044af00ea64d1191d5a1371288e5a6235bddcca2044c215dd4aede85955dbef02ab525000cc5ad99db7ec45f1469150e03c9eac

memory/3700-4-0x00000000002D0000-0x0000000000333000-memory.dmp