9b0ec0360c57721dba7aa2cdae5cff0eec452c1879763afa0c74cc4aa7e747db

Analysis

max time kernel
150s
max time network
119s
platform
windows7_x64
resource
win7-20240419-en
resource tags

arch:x64arch:x86image:win7-20240419-enlocale:en-usos:windows7-x64system
submitted
08-05-2024 12:20

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General

Target

a811a3c1e769aa79d9493942c4976160_NEIKI.exe
Size

1.6MB
MD5

a811a3c1e769aa79d9493942c4976160
SHA1

e972b66d9eaf4b26f61fcfe762ea03e3ee57f85b
SHA256

9b0ec0360c57721dba7aa2cdae5cff0eec452c1879763afa0c74cc4aa7e747db
SHA512

78ec5b29e403fd8e14b4f8a2f31548a17063e7a51dc0bff97986e5fa06eb29dd80f977e1460efa815926b21457bca97d88f62401166113f2feb558aa2a16563e
SSDEEP

24576:PFOaskwW4oHIIH950ysEtbJ4gwMmaRaV7rzwYVtH0E8ma8jT+RRiQIWYH17tu6t2:trwCB9+YOaILVtH0E8maWGiQI3V7tNt2

Score

10^/10

evasion persistence vmprotect

Malware Config

Signatures

Modifies visiblity of hidden/system files in Explorer 2 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1564.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-481678230-3773327859-3495911762-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	explorer.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-481678230-3773327859-3495911762-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	svchost.exe

Executes dropped EXE 6 IoCs

pid	Process
2320	a811a3c1e769aa79d9493942c4976160_neiki.exe
2448	icsys.icn.exe
3032	explorer.exe
2140	spoolsv.exe
2796	svchost.exe
2632	spoolsv.exe

Loads dropped DLL 6 IoCs

pid	Process
1992	a811a3c1e769aa79d9493942c4976160_NEIKI.exe
1992	a811a3c1e769aa79d9493942c4976160_NEIKI.exe
2448	icsys.icn.exe
3032	explorer.exe
2140	spoolsv.exe
2796	svchost.exe

VMProtect packed file 1 IoCs

Detects executables packed with VMProtect commercial packer.

vmprotect

resource	yara_rule
behavioral1/files/0x000800000001640f-6.dat	vmprotect

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\RunOnce\Explorer = "c:\\windows\\resources\\themes\\explorer.exe RO"	explorer.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\RunOnce\Svchost = "c:\\windows\\resources\\svchost.exe RO"	explorer.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\RunOnce\Explorer = "c:\\windows\\resources\\themes\\explorer.exe RO"	svchost.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\RunOnce\Svchost = "c:\\windows\\resources\\svchost.exe RO"	svchost.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\explorer.exe	explorer.exe
File opened for modification	C:\Windows\SysWOW64\explorer.exe	svchost.exe

Drops file in Windows directory 5 IoCs

description	ioc	Process
File opened for modification	C:\Windows\Resources\Themes\icsys.icn.exe	a811a3c1e769aa79d9493942c4976160_NEIKI.exe
File opened for modification	\??\c:\windows\resources\themes\explorer.exe	icsys.icn.exe
File opened for modification	\??\c:\windows\resources\spoolsv.exe	explorer.exe
File opened for modification	\??\c:\windows\resources\svchost.exe	spoolsv.exe
File opened for modification	C:\Windows\Resources\tjud.exe	explorer.exe

Creates scheduled task(s) 1 TTPs 3 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task/Job

T1053

pid	Process
2684	schtasks.exe
2736	schtasks.exe
2100	schtasks.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
1992	a811a3c1e769aa79d9493942c4976160_NEIKI.exe
1992	a811a3c1e769aa79d9493942c4976160_NEIKI.exe
1992	a811a3c1e769aa79d9493942c4976160_NEIKI.exe
1992	a811a3c1e769aa79d9493942c4976160_NEIKI.exe
1992	a811a3c1e769aa79d9493942c4976160_NEIKI.exe
1992	a811a3c1e769aa79d9493942c4976160_NEIKI.exe
1992	a811a3c1e769aa79d9493942c4976160_NEIKI.exe
1992	a811a3c1e769aa79d9493942c4976160_NEIKI.exe
1992	a811a3c1e769aa79d9493942c4976160_NEIKI.exe
1992	a811a3c1e769aa79d9493942c4976160_NEIKI.exe
1992	a811a3c1e769aa79d9493942c4976160_NEIKI.exe
1992	a811a3c1e769aa79d9493942c4976160_NEIKI.exe
1992	a811a3c1e769aa79d9493942c4976160_NEIKI.exe
1992	a811a3c1e769aa79d9493942c4976160_NEIKI.exe
1992	a811a3c1e769aa79d9493942c4976160_NEIKI.exe
1992	a811a3c1e769aa79d9493942c4976160_NEIKI.exe
2448	icsys.icn.exe
2448	icsys.icn.exe
2448	icsys.icn.exe
2448	icsys.icn.exe
2448	icsys.icn.exe
2448	icsys.icn.exe
2448	icsys.icn.exe
2448	icsys.icn.exe
2448	icsys.icn.exe
2448	icsys.icn.exe
2448	icsys.icn.exe
2448	icsys.icn.exe
2448	icsys.icn.exe
2448	icsys.icn.exe
2448	icsys.icn.exe
2448	icsys.icn.exe
2448	icsys.icn.exe
3032	explorer.exe
3032	explorer.exe
3032	explorer.exe
3032	explorer.exe
3032	explorer.exe
3032	explorer.exe
3032	explorer.exe
3032	explorer.exe
3032	explorer.exe
3032	explorer.exe
3032	explorer.exe
3032	explorer.exe
3032	explorer.exe
3032	explorer.exe
3032	explorer.exe
3032	explorer.exe
2796	svchost.exe
2796	svchost.exe
2796	svchost.exe
2796	svchost.exe
2796	svchost.exe
2796	svchost.exe
2796	svchost.exe
2796	svchost.exe
2796	svchost.exe
2796	svchost.exe
2796	svchost.exe
2796	svchost.exe
2796	svchost.exe
2796	svchost.exe
2796	svchost.exe

Suspicious behavior: GetForegroundWindowSpam 2 IoCs

pid	Process
2796	svchost.exe
3032	explorer.exe

Suspicious use of SetWindowsHookEx 12 IoCs

pid	Process
1992	a811a3c1e769aa79d9493942c4976160_NEIKI.exe
1992	a811a3c1e769aa79d9493942c4976160_NEIKI.exe
2448	icsys.icn.exe
2448	icsys.icn.exe
3032	explorer.exe
3032	explorer.exe
2140	spoolsv.exe
2140	spoolsv.exe
2796	svchost.exe
2796	svchost.exe
2632	spoolsv.exe
2632	spoolsv.exe

Suspicious use of WriteProcessMemory 40 IoCs

description	pid	Process	procid_target
PID 1992 wrote to memory of 2320	1992	a811a3c1e769aa79d9493942c4976160_NEIKI.exe	28
PID 1992 wrote to memory of 2320	1992	a811a3c1e769aa79d9493942c4976160_NEIKI.exe	28
PID 1992 wrote to memory of 2320	1992	a811a3c1e769aa79d9493942c4976160_NEIKI.exe	28
PID 1992 wrote to memory of 2320	1992	a811a3c1e769aa79d9493942c4976160_NEIKI.exe	28
PID 1992 wrote to memory of 2448	1992	a811a3c1e769aa79d9493942c4976160_NEIKI.exe	29
PID 1992 wrote to memory of 2448	1992	a811a3c1e769aa79d9493942c4976160_NEIKI.exe	29
PID 1992 wrote to memory of 2448	1992	a811a3c1e769aa79d9493942c4976160_NEIKI.exe	29
PID 1992 wrote to memory of 2448	1992	a811a3c1e769aa79d9493942c4976160_NEIKI.exe	29
PID 2448 wrote to memory of 3032	2448	icsys.icn.exe	30
PID 2448 wrote to memory of 3032	2448	icsys.icn.exe	30
PID 2448 wrote to memory of 3032	2448	icsys.icn.exe	30
PID 2448 wrote to memory of 3032	2448	icsys.icn.exe	30
PID 3032 wrote to memory of 2140	3032	explorer.exe	31
PID 3032 wrote to memory of 2140	3032	explorer.exe	31
PID 3032 wrote to memory of 2140	3032	explorer.exe	31
PID 3032 wrote to memory of 2140	3032	explorer.exe	31
PID 2140 wrote to memory of 2796	2140	spoolsv.exe	32
PID 2140 wrote to memory of 2796	2140	spoolsv.exe	32
PID 2140 wrote to memory of 2796	2140	spoolsv.exe	32
PID 2140 wrote to memory of 2796	2140	spoolsv.exe	32
PID 2796 wrote to memory of 2632	2796	svchost.exe	33
PID 2796 wrote to memory of 2632	2796	svchost.exe	33
PID 2796 wrote to memory of 2632	2796	svchost.exe	33
PID 2796 wrote to memory of 2632	2796	svchost.exe	33
PID 3032 wrote to memory of 2532	3032	explorer.exe	34
PID 3032 wrote to memory of 2532	3032	explorer.exe	34
PID 3032 wrote to memory of 2532	3032	explorer.exe	34
PID 3032 wrote to memory of 2532	3032	explorer.exe	34
PID 2796 wrote to memory of 2684	2796	svchost.exe	35
PID 2796 wrote to memory of 2684	2796	svchost.exe	35
PID 2796 wrote to memory of 2684	2796	svchost.exe	35
PID 2796 wrote to memory of 2684	2796	svchost.exe	35
PID 2796 wrote to memory of 2736	2796	svchost.exe	40
PID 2796 wrote to memory of 2736	2796	svchost.exe	40
PID 2796 wrote to memory of 2736	2796	svchost.exe	40
PID 2796 wrote to memory of 2736	2796	svchost.exe	40
PID 2796 wrote to memory of 2100	2796	svchost.exe	42
PID 2796 wrote to memory of 2100	2796	svchost.exe	42
PID 2796 wrote to memory of 2100	2796	svchost.exe	42
PID 2796 wrote to memory of 2100	2796	svchost.exe	42

C:\Users\Admin\AppData\Local\Temp\a811a3c1e769aa79d9493942c4976160_NEIKI.exe
"C:\Users\Admin\AppData\Local\Temp\a811a3c1e769aa79d9493942c4976160_NEIKI.exe"
1⤵
- Loads dropped DLL
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1992
- \??\c:\users\admin\appdata\local\temp\a811a3c1e769aa79d9493942c4976160_neiki.exe
  c:\users\admin\appdata\local\temp\a811a3c1e769aa79d9493942c4976160_neiki.exe
  2⤵
  - Executes dropped EXE
  PID:2320
- C:\Windows\Resources\Themes\icsys.icn.exe
  C:\Windows\Resources\Themes\icsys.icn.exe
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in Windows directory
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2448
- - \??\c:\windows\resources\themes\explorer.exe
    c:\windows\resources\themes\explorer.exe
    3⤵
    - Modifies visiblity of hidden/system files in Explorer
    - Executes dropped EXE
    - Loads dropped DLL
    - Adds Run key to start application
    - Drops file in System32 directory
    - Drops file in Windows directory
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:3032
  - - \??\c:\windows\resources\spoolsv.exe
      c:\windows\resources\spoolsv.exe SE
      4⤵
      Executes dropped EXE
      Loads dropped DLL
      Drops file in Windows directory
      Suspicious use of SetWindowsHookEx
      Suspicious use of WriteProcessMemory
      PID:2140
    - - \??\c:\windows\resources\svchost.exe
        
        c:\windows\resources\svchost.exe
        5⤵
        Modifies visiblity of hidden/system files in Explorer
        Executes dropped EXE
        Loads dropped DLL
        Adds Run key to start application
        Drops file in System32 directory
        Suspicious behavior: EnumeratesProcesses
        Suspicious behavior: GetForegroundWindowSpam
        Suspicious use of SetWindowsHookEx
        Suspicious use of WriteProcessMemory
        
        PID:2796
      - \??\c:\windows\resources\spoolsv.exe
        
        c:\windows\resources\spoolsv.exe PR
        6⤵
        Executes dropped EXE
        Suspicious use of SetWindowsHookEx
        
        PID:2632
      - C:\Windows\SysWOW64\schtasks.exe
        
        schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 12:22 /f
        6⤵
        Creates scheduled task(s)
        
        PID:2684
      - C:\Windows\SysWOW64\schtasks.exe
        
        schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 12:23 /f
        6⤵
        Creates scheduled task(s)
        
        PID:2736
      - C:\Windows\SysWOW64\schtasks.exe
        
        schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 12:24 /f
        6⤵
        Creates scheduled task(s)
        
        PID:2100
  - - C:\Windows\Explorer.exe
      C:\Windows\Explorer.exe
      4⤵
      PID:2532

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Defense Evasion

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Windows\Resources\Themes\explorer.exe

Filesize
135KB

MD5
e477b04f9fe2863ca9b2da307ab8a30c

SHA1
929e7adf312d25f4bf3754ce0efd93dc022b7de3

SHA256
e54d59a8ecb6d3416c282905bb97d738a1162f2d497a19c47561763495322073

SHA512
2d803fbf325dee1d782bbd77a0f74cbcb00a6a54ecd064e6f8bb79b63e427494ffff2cd69aa3c8df8b25c8f571b1deb0a1c05d40be2f9c7e46b66bb36808e01a

Download Submit
\Users\Admin\AppData\Local\Temp\a811a3c1e769aa79d9493942c4976160_neiki.exe

Filesize
1.5MB

MD5
b2df0057569ffe9c42fa88e639ac7046

SHA1
1798be8ca6f11c08b982f60e42d1c632f0631077

SHA256
eb507ee4b4b347daa400c41408146a2ffc0503496e500b8177dd1a9e877d7924

SHA512
1ef703191775e6f32790664ea34b80e09125750a5906c4097a5cb478ebe56cb9b4ebf3b64b5249ea6c4afb1fc158380340cab7c76c2489e724804906278e0233

Download Submit
\Windows\Resources\Themes\icsys.icn.exe

Filesize
135KB

MD5
6477f6d1cd07c56e8f29ba684e030ae5

SHA1
880ffe02c380bb2951f88b30a928be7a87587146

SHA256
72de6d92b4697384847573945625a3be3183bbec6d413ce38779f48ea8a1a685

SHA512
0aa55d6f76fc87f0e744a8143f7340b45f446f1e946e24a6ad03665966d8cc5076eaac3e3cbf92d3af3b056642d8e2627a64cb21c40de9154a85d405380d708f

Download Submit
\Windows\Resources\spoolsv.exe

Filesize
135KB

MD5
993b2c016c259d2b099ecfe215dc49a6

SHA1
c9b298d0efa03288a2b05c669006e66ed93194a6

SHA256
1f2065bfd4370f0e7fa6f6b75ffaeaa5a346ce8dac46d19f381d557b16c7a51b

SHA512
96b9aef4b860a98211de1060aa39fb88022f4338c8845e615522e79f172671610c8a5249e9539fee9506d7f1944592196a3fb1e8388abcc0c17f4d896ae6089f

Download Submit
\Windows\Resources\svchost.exe

Filesize
135KB

MD5
6ed7df85a137d805951c5ab1c53b7715

SHA1
f429f69007ad6819a5b2fe7cb4cbd791a45dbec5

SHA256
36e866e9c3f38e7b5a19c6b94b0c4c0083c9399614e18ad43d4a02e5a8b78d04

SHA512
736cb8459a6767bfbfd266100db08c911d166048ee77fba3dcedf04190e8c74886ec983b99f799d9deb7da96d72457ba98ccd13e96b8554a634ada45e0f5d707

Download Submit
memory/1992-0-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/1992-53-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download