3a937037a7790846c7cfb6970147cb4a0db7489251e3d0802838369b434ff077

Analysis

max time kernel
142s
max time network
139s
platform
windows10-2004_x64
resource
win10v2004-20240419-en
resource tags

arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
submitted
07/05/2024, 23:28

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
65e44e4433d432dc64fdb9409f597ab0_NEIKI.exe
Size 72KB
Sample240507-3ggl6agg99
SHA256 3a937037a7790846c7cfb6970147cb4a0db7489251e3d0802838369b434ff077
MD5 65e44e4433d432dc64fdb9409f597ab0
SHA1 67bf471b5d5cc30defdb348a37a3a06a348dc85d
SHA512 85f7ac69003348851e7981359781e6b87433b40d7d75370dc698178d7b04ad0cd56317376fe990b87555b1921d40c6f6af96460f008f70c01c262466aa4b6958
SSDEEP 1536:6LxJJlguY/NbvWU2VkWlVvtlqDyKJR40AEEo1:cc/R+U23vtlPR0pV
MD5 SHA1 SHA512 SSDEEP

Score

8^/10

bootkit persistence spyware stealer upx

Malware Config

Signatures

Blocklisted process makes network request 8 IoCs

flow	pid	Process
25	916	rundll32.exe
33	916	rundll32.exe
34	916	rundll32.exe
35	916	rundll32.exe
48	916	rundll32.exe
49	916	rundll32.exe
61	916	rundll32.exe
74	916	rundll32.exe

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral2/files/0x000500000001e738-13.dat	acprotect

Deletes itself 1 IoCs

pid	Process
1724	gzwov.exe

Executes dropped EXE 1 IoCs

pid	Process
1724	gzwov.exe

Loads dropped DLL 1 IoCs

pid	Process
916	rundll32.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

UPX packed file 5 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/files/0x000500000001e738-13.dat	upx
behavioral2/memory/916-15-0x0000000010000000-0x0000000010024000-memory.dmp	upx
behavioral2/memory/916-16-0x0000000010000000-0x0000000010024000-memory.dmp	upx
behavioral2/memory/916-18-0x0000000010000000-0x0000000010024000-memory.dmp	upx
behavioral2/memory/916-20-0x0000000010000000-0x0000000010024000-memory.dmp	upx

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3726321484-1950364574-433157660-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\EvtMgr = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\eydjy\\bvkyw.dll\",init"	rundll32.exe

Enumerates connected drives 3 TTPs 23 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	\??\b:	rundll32.exe
File opened (read-only)	\??\g:	rundll32.exe
File opened (read-only)	\??\h:	rundll32.exe
File opened (read-only)	\??\r:	rundll32.exe
File opened (read-only)	\??\t:	rundll32.exe
File opened (read-only)	\??\u:	rundll32.exe
File opened (read-only)	\??\v:	rundll32.exe
File opened (read-only)	\??\a:	rundll32.exe
File opened (read-only)	\??\w:	rundll32.exe
File opened (read-only)	\??\o:	rundll32.exe
File opened (read-only)	\??\l:	rundll32.exe
File opened (read-only)	\??\i:	rundll32.exe
File opened (read-only)	\??\k:	rundll32.exe
File opened (read-only)	\??\n:	rundll32.exe
File opened (read-only)	\??\p:	rundll32.exe
File opened (read-only)	\??\s:	rundll32.exe
File opened (read-only)	\??\x:	rundll32.exe
File opened (read-only)	\??\z:	rundll32.exe
File opened (read-only)	\??\e:	rundll32.exe
File opened (read-only)	\??\m:	rundll32.exe
File opened (read-only)	\??\q:	rundll32.exe
File opened (read-only)	\??\y:	rundll32.exe
File opened (read-only)	\??\j:	rundll32.exe

Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

Bootkits write to the MBR to gain persistence at a level below the operating system.

bootkit persistence

Bootkit

T1542.003

description	ioc	Process
File opened for modification	\??\PHYSICALDRIVE0	rundll32.exe

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	rundll32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	rundll32.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
3920	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
916	rundll32.exe
916	rundll32.exe
916	rundll32.exe
916	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	916	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1884	65e44e4433d432dc64fdb9409f597ab0_NEIKI.exe
1724	gzwov.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1884 wrote to memory of 2012	1884	65e44e4433d432dc64fdb9409f597ab0_NEIKI.exe	85
PID 1884 wrote to memory of 2012	1884	65e44e4433d432dc64fdb9409f597ab0_NEIKI.exe	85
PID 1884 wrote to memory of 2012	1884	65e44e4433d432dc64fdb9409f597ab0_NEIKI.exe	85
PID 2012 wrote to memory of 3920	2012	cmd.exe	87
PID 2012 wrote to memory of 3920	2012	cmd.exe	87
PID 2012 wrote to memory of 3920	2012	cmd.exe	87
PID 2012 wrote to memory of 1724	2012	cmd.exe	92
PID 2012 wrote to memory of 1724	2012	cmd.exe	92
PID 2012 wrote to memory of 1724	2012	cmd.exe	92
PID 1724 wrote to memory of 916	1724	gzwov.exe	93
PID 1724 wrote to memory of 916	1724	gzwov.exe	93
PID 1724 wrote to memory of 916	1724	gzwov.exe	93

C:\Users\Admin\AppData\Local\Temp\65e44e4433d432dc64fdb9409f597ab0_NEIKI.exe
"C:\Users\Admin\AppData\Local\Temp\65e44e4433d432dc64fdb9409f597ab0_NEIKI.exe"
1⤵
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1884
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&c:\gzwov.exe "C:\Users\Admin\AppData\Local\Temp\65e44e4433d432dc64fdb9409f597ab0_NEIKI.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2012
- - C:\Windows\SysWOW64\PING.EXE
    ping 127.0.0.1 -n 2
    3⤵
    - Runs ping.exe
    PID:3920
- - \??\c:\gzwov.exe
    c:\gzwov.exe "C:\Users\Admin\AppData\Local\Temp\65e44e4433d432dc64fdb9409f597ab0_NEIKI.exe"
    3⤵
    - Deletes itself
    - Executes dropped EXE
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:1724
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\eydjy\bvkyw.dll",init c:\gzwov.exe
      4⤵
      Blocklisted process makes network request
      Loads dropped DLL
      Adds Run key to start application
      Enumerates connected drives
      Writes to the Master Boot Record (MBR)
      Checks processor information in registry
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:916

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Pre-OS Boot

T1542

Bootkit

T1542.003

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Pre-OS Boot

T1542

Bootkit

T1542.003

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

Remote System Discovery

T1018

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

bvkyw.dll

Path \??\c:\eydjy\bvkyw.dll
Size 46KB
SHA256 b6bc7902da0250f6ca920b35b222f6a0fe62102caf05d2a1722c4d3b225a0a9e
MD5 42fe886bcb6460f7c2a46e21ecac5da6
SHA1 7d9a1c9fe17121cf61444da965f29e974a95ede2
SHA512 3d1a7dc1d9ca8a4376302ba20df584ad59b98e0d3b18b06b22d7f5a455833ce124e412fc1922a3b704dcbafa31987cda3115c9a71dd6299683502cebae33567c
SSDEEP 768:P60NIyOvlPSGxZ00FBsMT0fdB5h3vU7ExCClpoduUglNgLoR/C:P6e4lP5rvz1Vd8H/C
MD5 SHA1 SHA512 SSDEEP

Submit Download

gzwov.exe

Path \??\c:\gzwov.exe
Size 72KB
SHA256 e157cfa562e384d9ad3d372b27cb83c781cf69b7ce76a661eb2ef73270a72147
MD5 e3eb07408803a278681699298715a80b
SHA1 c2f83a570ac2b9cfb1f6a521828d7b8f8ec30b84
SHA512 a83c92eff71a66652bea770f6cf5c6d1d3d3e368ac18a10b559b6c005cbef3c94fe28559b8fde624d98162698d2d984dd023f412c3d079f29b9da3100222b17b
SSDEEP 1536:6LxJJlguY/NbvWU2VkWlVvtlqDyKJR40AEEoZ:cc/R+U23vtlPR0p5
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/916-15-0x0000000010000000-0x0000000010024000-memory.dmp

Download

memory/916-16-0x0000000010000000-0x0000000010024000-memory.dmp

Download

memory/916-18-0x0000000010000000-0x0000000010024000-memory.dmp

Download

memory/916-20-0x0000000010000000-0x0000000010024000-memory.dmp

Download

memory/1724-9-0x0000000001F90000-0x0000000001F92000-memory.dmp

Download

memory/1724-8-0x0000000000400000-0x0000000000417000-memory.dmp

Download

memory/1724-12-0x0000000000400000-0x0000000000417000-memory.dmp

Download

memory/1884-0-0x0000000000400000-0x0000000000417000-memory.dmp

Download

memory/1884-1-0x0000000000A60000-0x0000000000A62000-memory.dmp

Download

memory/1884-4-0x0000000000400000-0x0000000000417000-memory.dmp

Download