Malware Analysis Report

2025-08-05 12:50

Sample ID 240509-b1b28sdg29
Target c034ae9562897648c7969f1ed989ce90_NEIKI
SHA256 b724c2473b4b6a0a7883dce478fd035009e534e25ad9190b609c06e4ab1053b1
Tags
bootkit persistence spyware stealer
score
8/10

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
8/10

SHA256

b724c2473b4b6a0a7883dce478fd035009e534e25ad9190b609c06e4ab1053b1

Threat Level: Likely malicious

The file c034ae9562897648c7969f1ed989ce90_NEIKI was found to be: Likely malicious.

Malicious Activity Summary

bootkit persistence spyware stealer

Blocklisted process makes network request

Executes dropped EXE

Deletes itself

Reads user/profile data of web browsers

Loads dropped DLL

Enumerates connected drives

Adds Run key to start application

Writes to the Master Boot Record (MBR)

Unsigned PE

Checks processor information in registry

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

Suspicious use of SetWindowsHookEx

Suspicious use of AdjustPrivilegeToken

Runs ping.exe

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-05-09 01:36

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-05-09 01:36

Reported

2024-05-09 01:38

Platform

win7-20240221-en

Max time kernel

52s

Max time network

154s

Command Line

"C:\Users\Admin\AppData\Local\Temp\c034ae9562897648c7969f1ed989ce90_NEIKI.exe"

Signatures

Blocklisted process makes network request

Description Indicator Process Target
N/A N/A \??\c:\windows\SysWOW64\rundll32.exe N/A
N/A N/A \??\c:\windows\SysWOW64\rundll32.exe N/A
N/A N/A \??\c:\windows\SysWOW64\rundll32.exe N/A

Deletes itself

Description Indicator Process Target
N/A N/A \??\c:\fozhq.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A \??\c:\fozhq.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Windows\CurrentVersion\Run\EvtMgr = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\ctelvzg\\yauzz.dll\",GetWindowClass" \??\c:\windows\SysWOW64\rundll32.exe N/A

Enumerates connected drives

Description Indicator Process Target
File opened (read-only) \??\a: \??\c:\windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\b: \??\c:\windows\SysWOW64\rundll32.exe N/A

Writes to the Master Boot Record (MBR)

bootkit persistence
Description Indicator Process Target
File opened for modification \??\PHYSICALDRIVE0 \??\c:\windows\SysWOW64\rundll32.exe N/A

Runs ping.exe

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\PING.EXE N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A \??\c:\windows\SysWOW64\rundll32.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\c034ae9562897648c7969f1ed989ce90_NEIKI.exe N/A
N/A N/A \??\c:\fozhq.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2148 wrote to memory of 2928 N/A C:\Users\Admin\AppData\Local\Temp\c034ae9562897648c7969f1ed989ce90_NEIKI.exe C:\Windows\SysWOW64\cmd.exe
PID 2148 wrote to memory of 2928 N/A C:\Users\Admin\AppData\Local\Temp\c034ae9562897648c7969f1ed989ce90_NEIKI.exe C:\Windows\SysWOW64\cmd.exe
PID 2148 wrote to memory of 2928 N/A C:\Users\Admin\AppData\Local\Temp\c034ae9562897648c7969f1ed989ce90_NEIKI.exe C:\Windows\SysWOW64\cmd.exe
PID 2148 wrote to memory of 2928 N/A C:\Users\Admin\AppData\Local\Temp\c034ae9562897648c7969f1ed989ce90_NEIKI.exe C:\Windows\SysWOW64\cmd.exe
PID 2928 wrote to memory of 668 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE
PID 2928 wrote to memory of 668 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE
PID 2928 wrote to memory of 668 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE
PID 2928 wrote to memory of 668 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE
PID 2928 wrote to memory of 2736 N/A C:\Windows\SysWOW64\cmd.exe \??\c:\fozhq.exe
PID 2928 wrote to memory of 2736 N/A C:\Windows\SysWOW64\cmd.exe \??\c:\fozhq.exe
PID 2928 wrote to memory of 2736 N/A C:\Windows\SysWOW64\cmd.exe \??\c:\fozhq.exe
PID 2928 wrote to memory of 2736 N/A C:\Windows\SysWOW64\cmd.exe \??\c:\fozhq.exe
PID 2736 wrote to memory of 1364 N/A \??\c:\fozhq.exe \??\c:\windows\SysWOW64\rundll32.exe
PID 2736 wrote to memory of 1364 N/A \??\c:\fozhq.exe \??\c:\windows\SysWOW64\rundll32.exe
PID 2736 wrote to memory of 1364 N/A \??\c:\fozhq.exe \??\c:\windows\SysWOW64\rundll32.exe
PID 2736 wrote to memory of 1364 N/A \??\c:\fozhq.exe \??\c:\windows\SysWOW64\rundll32.exe
PID 2736 wrote to memory of 1364 N/A \??\c:\fozhq.exe \??\c:\windows\SysWOW64\rundll32.exe
PID 2736 wrote to memory of 1364 N/A \??\c:\fozhq.exe \??\c:\windows\SysWOW64\rundll32.exe
PID 2736 wrote to memory of 1364 N/A \??\c:\fozhq.exe \??\c:\windows\SysWOW64\rundll32.exe

Processes

C:\Users\Admin\AppData\Local\Temp\c034ae9562897648c7969f1ed989ce90_NEIKI.exe

"C:\Users\Admin\AppData\Local\Temp\c034ae9562897648c7969f1ed989ce90_NEIKI.exe"

C:\Windows\SysWOW64\cmd.exe

cmd.exe /c ping 127.0.0.1 -n 2&c:\fozhq.exe "C:\Users\Admin\AppData\Local\Temp\c034ae9562897648c7969f1ed989ce90_NEIKI.exe"

C:\Windows\SysWOW64\PING.EXE

ping 127.0.0.1 -n 2

\??\c:\fozhq.exe

c:\fozhq.exe "C:\Users\Admin\AppData\Local\Temp\c034ae9562897648c7969f1ed989ce90_NEIKI.exe"

\??\c:\windows\SysWOW64\rundll32.exe

c:\windows\system32\rundll32.exe "c:\ctelvzg\yauzz.dll",GetWindowClass c:\fozhq.exe

Network

Country Destination Domain Proto
US 67.198.215.210:803 tcp
US 67.198.215.210:803 tcp
US 67.198.215.210:3204 tcp
US 67.198.215.211:805 tcp
US 67.198.215.211:805 tcp
US 67.198.215.211:805 tcp
US 67.198.215.211:805 tcp
US 67.198.215.210:3204 tcp
US 67.198.215.210:3204 tcp
US 67.198.215.210:3204 tcp

Files

memory/2148-0-0x0000000000400000-0x000000000041D000-memory.dmp

memory/2148-2-0x0000000000400000-0x000000000041D000-memory.dmp

\??\c:\fozhq.exe

MD5 6970fd2df9af92e1e9703023c99ece3a
SHA1 751a74c004212dc28a3818e148ebb0e0964aff44
SHA256 6c3cefe6ae9d83950d17c162d1f014da2e840a3cd6ace9117c0d63dc2490b155
SHA512 ac82844260c3aa05b93f7cf2e173684a34328683813e9c3b6983556820a20929130a1f10da7c81dfffd0ce5a26a423a11b6a3a4b50f95525671c4c3de375b554

memory/2736-6-0x0000000000400000-0x000000000041D000-memory.dmp

memory/2928-5-0x0000000000410000-0x000000000042D000-memory.dmp

memory/2736-8-0x0000000000400000-0x000000000041D000-memory.dmp

\ctelvzg\yauzz.dll

MD5 06c39ca503305efbf7274f6bf9394f28
SHA1 bec4daadab49f1f58a951d9cc1b2d7c1e2ae8450
SHA256 19f33ba32f20dae1ea6a6b87824dc8e3e74527b34f9cd01a6e4f67e3e79dd867
SHA512 e6c8b19892b5ce5108909824ad37b0fe0eed2459939f0249133bf3e3c1470308d6d51aa3fbf42aabcbf37bb2412c8a27bff445e23dc0495910ec5f445055d931

memory/1364-15-0x0000000010000000-0x0000000010036000-memory.dmp

memory/1364-13-0x0000000010000000-0x0000000010036000-memory.dmp

memory/1364-17-0x0000000010000000-0x0000000010036000-memory.dmp

memory/1364-16-0x0000000010033000-0x0000000010034000-memory.dmp

memory/1364-18-0x0000000010000000-0x0000000010036000-memory.dmp

memory/1364-20-0x0000000010033000-0x0000000010034000-memory.dmp

memory/1364-23-0x0000000010000000-0x0000000010036000-memory.dmp

memory/1364-24-0x0000000010000000-0x0000000010036000-memory.dmp

memory/1364-25-0x0000000010000000-0x0000000010036000-memory.dmp

memory/1364-26-0x0000000010000000-0x0000000010036000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-05-09 01:36

Reported

2024-05-09 01:38

Platform

win10v2004-20240508-en

Max time kernel

142s

Max time network

137s

Command Line

"C:\Users\Admin\AppData\Local\Temp\c034ae9562897648c7969f1ed989ce90_NEIKI.exe"

Signatures

Deletes itself

Description Indicator Process Target
N/A N/A \??\c:\ppkcgvd.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A \??\c:\ppkcgvd.exe N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A \??\c:\windows\SysWOW64\rundll32.exe N/A

Reads user/profile data of web browsers

spyware stealer

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\EvtMgr = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\modhn\\jesqfivz.dll\",GetWindowClass" \??\c:\windows\SysWOW64\rundll32.exe N/A

Enumerates connected drives

Description Indicator Process Target
File opened (read-only) \??\p: \??\c:\windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\q: \??\c:\windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\a: \??\c:\windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\h: \??\c:\windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\k: \??\c:\windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\m: \??\c:\windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\o: \??\c:\windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\t: \??\c:\windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\w: \??\c:\windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\z: \??\c:\windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\b: \??\c:\windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\i: \??\c:\windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\n: \??\c:\windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\r: \??\c:\windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\u: \??\c:\windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\v: \??\c:\windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\x: \??\c:\windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\y: \??\c:\windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\e: \??\c:\windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\g: \??\c:\windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\j: \??\c:\windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\l: \??\c:\windows\SysWOW64\rundll32.exe N/A
File opened (read-only) \??\s: \??\c:\windows\SysWOW64\rundll32.exe N/A

Writes to the Master Boot Record (MBR)

bootkit persistence
Description Indicator Process Target
File opened for modification \??\PHYSICALDRIVE0 \??\c:\windows\SysWOW64\rundll32.exe N/A

Checks processor information in registry

Description Indicator Process Target
Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 \??\c:\windows\SysWOW64\rundll32.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString \??\c:\windows\SysWOW64\rundll32.exe N/A

Runs ping.exe

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\PING.EXE N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A \??\c:\windows\SysWOW64\rundll32.exe N/A
N/A N/A \??\c:\windows\SysWOW64\rundll32.exe N/A
N/A N/A \??\c:\windows\SysWOW64\rundll32.exe N/A
N/A N/A \??\c:\windows\SysWOW64\rundll32.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A \??\c:\windows\SysWOW64\rundll32.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\c034ae9562897648c7969f1ed989ce90_NEIKI.exe N/A
N/A N/A \??\c:\ppkcgvd.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\c034ae9562897648c7969f1ed989ce90_NEIKI.exe

"C:\Users\Admin\AppData\Local\Temp\c034ae9562897648c7969f1ed989ce90_NEIKI.exe"

C:\Windows\SysWOW64\cmd.exe

cmd.exe /c ping 127.0.0.1 -n 2&c:\ppkcgvd.exe "C:\Users\Admin\AppData\Local\Temp\c034ae9562897648c7969f1ed989ce90_NEIKI.exe"

C:\Windows\SysWOW64\PING.EXE

ping 127.0.0.1 -n 2

\??\c:\ppkcgvd.exe

c:\ppkcgvd.exe "C:\Users\Admin\AppData\Local\Temp\c034ae9562897648c7969f1ed989ce90_NEIKI.exe"

\??\c:\windows\SysWOW64\rundll32.exe

c:\windows\system32\rundll32.exe "c:\modhn\jesqfivz.dll",GetWindowClass c:\ppkcgvd.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 17.160.190.20.in-addr.arpa udp
US 67.198.215.210:803 tcp
US 67.198.215.210:3204 tcp
US 67.198.215.211:805 tcp
US 67.198.215.211:805 tcp
US 67.198.215.211:805 tcp
US 67.198.215.210:3204 tcp
US 8.8.8.8:53 25.140.123.92.in-addr.arpa udp
US 67.198.215.210:3204 tcp
US 8.8.8.8:53 48.229.111.52.in-addr.arpa udp
US 67.198.215.210:3204 tcp

Files

memory/2200-0-0x0000000000400000-0x000000000041D000-memory.dmp

memory/2200-2-0x0000000000400000-0x000000000041D000-memory.dmp

C:\ppkcgvd.exe

MD5 a3af9bb40a0736cccd5657bc6c7125ea
SHA1 2ca7b0af4d3d3b28fe2eb9c775c8bfe95a05df32
SHA256 fce3ffe69834b0363e62aa089d8e15ea37c9d131836bb0ad40b15ab9505de653
SHA512 1e84fc80df6357aa1c5d0242e66cd3e63fbf353364b0d7e9bf921949ddffca514c6094eca03d69d4073b7dfbcd10729766149dbf799179b155ba578ab957db48

memory/2520-7-0x0000000000400000-0x000000000041D000-memory.dmp

\??\c:\modhn\jesqfivz.dll

MD5 06c39ca503305efbf7274f6bf9394f28
SHA1 bec4daadab49f1f58a951d9cc1b2d7c1e2ae8450
SHA256 19f33ba32f20dae1ea6a6b87824dc8e3e74527b34f9cd01a6e4f67e3e79dd867
SHA512 e6c8b19892b5ce5108909824ad37b0fe0eed2459939f0249133bf3e3c1470308d6d51aa3fbf42aabcbf37bb2412c8a27bff445e23dc0495910ec5f445055d931

memory/3404-10-0x0000000010000000-0x0000000010036000-memory.dmp

memory/3404-11-0x0000000000CB0000-0x0000000000CB2000-memory.dmp

memory/3404-12-0x0000000010000000-0x0000000010036000-memory.dmp

memory/3404-14-0x0000000000CB0000-0x0000000000CB2000-memory.dmp

memory/3404-15-0x0000000010000000-0x0000000010036000-memory.dmp

memory/3404-17-0x0000000010000000-0x0000000010036000-memory.dmp