c97647687c9e5a3fcf97f8379de35da99d17ab69cd19cc143a8ce24cd7076d5d

Analysis

max time kernel
150s
max time network
115s
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, 22:17

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General

Target

4dd35f92e175bc0b2c1dba9e6a65fe70_NEIKI.exe
Size

2.5MB
MD5

4dd35f92e175bc0b2c1dba9e6a65fe70
SHA1

c48baf0de028f9d4919e9ab5b41aee79c42fc580
SHA256

c97647687c9e5a3fcf97f8379de35da99d17ab69cd19cc143a8ce24cd7076d5d
SHA512

6d21cd5ee7135cca5f0bd2b20e82aead5eea1bc95403f0bc090175f997d845c56d1e41a623624a584ad530ffd864dfbed94c3bdd8602337d155fc1b86a8d9ac8
SSDEEP

49152:u4sYA5APvJjKEDMiXKEHPle6bYuYaig+CcMyc20D++qx376m8pSwCygAU:u4XjPvJjVNXKCsMY5XAjSH377GnCygr

Score

10^/10

evasion persistence themida trojan

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-1-5-21-3726321484-1950364574-433157660-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	explorer.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3726321484-1950364574-433157660-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	svchost.exe

Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 5 IoCs

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	4dd35f92e175bc0b2c1dba9e6a65fe70_NEIKI.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	explorer.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	spoolsv.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	svchost.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	spoolsv.exe

Checks BIOS information in registry 2 TTPs 10 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	4dd35f92e175bc0b2c1dba9e6a65fe70_NEIKI.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	explorer.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	svchost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	svchost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	spoolsv.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	spoolsv.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	4dd35f92e175bc0b2c1dba9e6a65fe70_NEIKI.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	explorer.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	spoolsv.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	spoolsv.exe

Executes dropped EXE 4 IoCs

pid	Process
5112	explorer.exe
692	spoolsv.exe
4416	svchost.exe
4212	spoolsv.exe

Themida packer 15 IoCs

Detects Themida, an advanced Windows software protection system.

themida

resource	yara_rule
behavioral2/memory/1528-0-0x0000000000400000-0x0000000000A05000-memory.dmp	themida
behavioral2/files/0x000d000000023b91-8.dat	themida
behavioral2/memory/5112-10-0x0000000000400000-0x0000000000A05000-memory.dmp	themida
behavioral2/files/0x000d000000023b82-15.dat	themida
behavioral2/memory/692-19-0x0000000000400000-0x0000000000A05000-memory.dmp	themida
behavioral2/files/0x000b000000023b99-26.dat	themida
behavioral2/memory/4416-28-0x0000000000400000-0x0000000000A05000-memory.dmp	themida
behavioral2/memory/4212-33-0x0000000000400000-0x0000000000A05000-memory.dmp	themida
behavioral2/memory/4212-38-0x0000000000400000-0x0000000000A05000-memory.dmp	themida
behavioral2/memory/692-42-0x0000000000400000-0x0000000000A05000-memory.dmp	themida
behavioral2/memory/1528-41-0x0000000000400000-0x0000000000A05000-memory.dmp	themida
behavioral2/memory/5112-43-0x0000000000400000-0x0000000000A05000-memory.dmp	themida
behavioral2/memory/4416-44-0x0000000000400000-0x0000000000A05000-memory.dmp	themida
behavioral2/memory/4416-50-0x0000000000400000-0x0000000000A05000-memory.dmp	themida
behavioral2/memory/5112-55-0x0000000000400000-0x0000000000A05000-memory.dmp	themida

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

Checks whether UAC is enabled 1 TTPs 5 IoCs

evasion trojan

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	spoolsv.exe
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	svchost.exe
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	spoolsv.exe
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	4dd35f92e175bc0b2c1dba9e6a65fe70_NEIKI.exe
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	explorer.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

Suspicious use of NtSetInformationThreadHideFromDebugger 5 IoCs

pid	Process
1528	4dd35f92e175bc0b2c1dba9e6a65fe70_NEIKI.exe
5112	explorer.exe
692	spoolsv.exe
4416	svchost.exe
4212	spoolsv.exe

Drops file in Windows directory 4 IoCs

description	ioc	Process
File opened for modification	\??\c:\windows\resources\themes\explorer.exe	4dd35f92e175bc0b2c1dba9e6a65fe70_NEIKI.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

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
1528	4dd35f92e175bc0b2c1dba9e6a65fe70_NEIKI.exe
1528	4dd35f92e175bc0b2c1dba9e6a65fe70_NEIKI.exe
1528	4dd35f92e175bc0b2c1dba9e6a65fe70_NEIKI.exe
1528	4dd35f92e175bc0b2c1dba9e6a65fe70_NEIKI.exe
1528	4dd35f92e175bc0b2c1dba9e6a65fe70_NEIKI.exe
1528	4dd35f92e175bc0b2c1dba9e6a65fe70_NEIKI.exe
1528	4dd35f92e175bc0b2c1dba9e6a65fe70_NEIKI.exe
1528	4dd35f92e175bc0b2c1dba9e6a65fe70_NEIKI.exe
1528	4dd35f92e175bc0b2c1dba9e6a65fe70_NEIKI.exe
1528	4dd35f92e175bc0b2c1dba9e6a65fe70_NEIKI.exe
1528	4dd35f92e175bc0b2c1dba9e6a65fe70_NEIKI.exe
1528	4dd35f92e175bc0b2c1dba9e6a65fe70_NEIKI.exe
1528	4dd35f92e175bc0b2c1dba9e6a65fe70_NEIKI.exe
1528	4dd35f92e175bc0b2c1dba9e6a65fe70_NEIKI.exe
1528	4dd35f92e175bc0b2c1dba9e6a65fe70_NEIKI.exe
1528	4dd35f92e175bc0b2c1dba9e6a65fe70_NEIKI.exe
1528	4dd35f92e175bc0b2c1dba9e6a65fe70_NEIKI.exe
1528	4dd35f92e175bc0b2c1dba9e6a65fe70_NEIKI.exe
1528	4dd35f92e175bc0b2c1dba9e6a65fe70_NEIKI.exe
1528	4dd35f92e175bc0b2c1dba9e6a65fe70_NEIKI.exe
1528	4dd35f92e175bc0b2c1dba9e6a65fe70_NEIKI.exe
1528	4dd35f92e175bc0b2c1dba9e6a65fe70_NEIKI.exe
1528	4dd35f92e175bc0b2c1dba9e6a65fe70_NEIKI.exe
1528	4dd35f92e175bc0b2c1dba9e6a65fe70_NEIKI.exe
1528	4dd35f92e175bc0b2c1dba9e6a65fe70_NEIKI.exe
1528	4dd35f92e175bc0b2c1dba9e6a65fe70_NEIKI.exe
1528	4dd35f92e175bc0b2c1dba9e6a65fe70_NEIKI.exe
1528	4dd35f92e175bc0b2c1dba9e6a65fe70_NEIKI.exe
1528	4dd35f92e175bc0b2c1dba9e6a65fe70_NEIKI.exe
1528	4dd35f92e175bc0b2c1dba9e6a65fe70_NEIKI.exe
1528	4dd35f92e175bc0b2c1dba9e6a65fe70_NEIKI.exe
1528	4dd35f92e175bc0b2c1dba9e6a65fe70_NEIKI.exe
1528	4dd35f92e175bc0b2c1dba9e6a65fe70_NEIKI.exe
1528	4dd35f92e175bc0b2c1dba9e6a65fe70_NEIKI.exe
5112	explorer.exe
5112	explorer.exe
5112	explorer.exe
5112	explorer.exe
5112	explorer.exe
5112	explorer.exe
5112	explorer.exe
5112	explorer.exe
5112	explorer.exe
5112	explorer.exe
5112	explorer.exe
5112	explorer.exe
5112	explorer.exe
5112	explorer.exe
5112	explorer.exe
5112	explorer.exe
5112	explorer.exe
5112	explorer.exe
5112	explorer.exe
5112	explorer.exe
5112	explorer.exe
5112	explorer.exe
5112	explorer.exe
5112	explorer.exe
5112	explorer.exe
5112	explorer.exe
5112	explorer.exe
5112	explorer.exe
5112	explorer.exe
5112	explorer.exe

Suspicious behavior: GetForegroundWindowSpam 2 IoCs

pid	Process
5112	explorer.exe
4416	svchost.exe

Suspicious use of SetWindowsHookEx 10 IoCs

pid	Process
1528	4dd35f92e175bc0b2c1dba9e6a65fe70_NEIKI.exe
1528	4dd35f92e175bc0b2c1dba9e6a65fe70_NEIKI.exe
5112	explorer.exe
5112	explorer.exe
692	spoolsv.exe
692	spoolsv.exe
4416	svchost.exe
4416	svchost.exe
4212	spoolsv.exe
4212	spoolsv.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1528 wrote to memory of 5112	1528	4dd35f92e175bc0b2c1dba9e6a65fe70_NEIKI.exe	83
PID 1528 wrote to memory of 5112	1528	4dd35f92e175bc0b2c1dba9e6a65fe70_NEIKI.exe	83
PID 1528 wrote to memory of 5112	1528	4dd35f92e175bc0b2c1dba9e6a65fe70_NEIKI.exe	83
PID 5112 wrote to memory of 692	5112	explorer.exe	86
PID 5112 wrote to memory of 692	5112	explorer.exe	86
PID 5112 wrote to memory of 692	5112	explorer.exe	86
PID 692 wrote to memory of 4416	692	spoolsv.exe	88
PID 692 wrote to memory of 4416	692	spoolsv.exe	88
PID 692 wrote to memory of 4416	692	spoolsv.exe	88
PID 4416 wrote to memory of 4212	4416	svchost.exe	89
PID 4416 wrote to memory of 4212	4416	svchost.exe	89
PID 4416 wrote to memory of 4212	4416	svchost.exe	89

C:\Users\Admin\AppData\Local\Temp\4dd35f92e175bc0b2c1dba9e6a65fe70_NEIKI.exe
"C:\Users\Admin\AppData\Local\Temp\4dd35f92e175bc0b2c1dba9e6a65fe70_NEIKI.exe"
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1528
- \??\c:\windows\resources\themes\explorer.exe
  c:\windows\resources\themes\explorer.exe
  2⤵
  - Modifies visiblity of hidden/system files in Explorer
  - Identifies VirtualBox via ACPI registry values (likely anti-VM)
  - Checks BIOS information in registry
  - Executes dropped EXE
  - Adds Run key to start application
  - Checks whether UAC is enabled
  - Drops file in System32 directory
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - Drops file in Windows directory
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:5112
- - \??\c:\windows\resources\spoolsv.exe
    c:\windows\resources\spoolsv.exe SE
    3⤵
    - Identifies VirtualBox via ACPI registry values (likely anti-VM)
    - Checks BIOS information in registry
    - Executes dropped EXE
    - Checks whether UAC is enabled
    - Suspicious use of NtSetInformationThreadHideFromDebugger
    - Drops file in Windows directory
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:692
  - - \??\c:\windows\resources\svchost.exe
      c:\windows\resources\svchost.exe
      4⤵
      Modifies visiblity of hidden/system files in Explorer
      Identifies VirtualBox via ACPI registry values (likely anti-VM)
      Checks BIOS information in registry
      Executes dropped EXE
      Adds Run key to start application
      Checks whether UAC is enabled
      Drops file in System32 directory
      Suspicious use of NtSetInformationThreadHideFromDebugger
      Suspicious behavior: GetForegroundWindowSpam
      Suspicious use of SetWindowsHookEx
      Suspicious use of WriteProcessMemory
      PID:4416
    - - \??\c:\windows\resources\spoolsv.exe
        
        c:\windows\resources\spoolsv.exe PR
        5⤵
        Identifies VirtualBox via ACPI registry values (likely anti-VM)
        Checks BIOS information in registry
        Executes dropped EXE
        Checks whether UAC is enabled
        Suspicious use of NtSetInformationThreadHideFromDebugger
        Suspicious use of SetWindowsHookEx
        
        PID:4212

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

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

Modify Registry

T1112

Virtualization/Sandbox Evasion

T1497

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Virtualization/Sandbox Evasion

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
2.5MB

MD5
5281332b39f1155056ef3c71d4c4471f

SHA1
f72df6d5afe427227e1159b160a28fd6265046a9

SHA256
aedf0060ab437bf5dc8956f968380f3e815e6f8307d327c516d1f614edfd1e0e

SHA512
670bbbfff8ec8bb47881dade3d6002b3535021a1d19924d8d26bd22dbcebfdd814b6616810436cb8c5e85b25e828cbc3b9da69237e095af2bc27e306941283e3

Download Submit
C:\Windows\Resources\spoolsv.exe

Filesize
2.5MB

MD5
f239b95c66573971b0e3f2c0a4e68d19

SHA1
f6bc697125aa8bd94c8c1b5b4f50dd1c90705cd9

SHA256
8c932d94bafc14df321133263486d1509f983d264d2db79d1db143c8e642fb1f

SHA512
7ec0ce48f932cd9b2842a62bb38bb262fe721ede8ebec0755e56e49c6f4cf5d004fb8d6e9a55b016576c03fabf3a8ea799d65945b3314338f1561f06f575c771

Download Submit
C:\Windows\Resources\svchost.exe

Filesize
2.5MB

MD5
39838622fc6fced2c4d1e29688764cf6

SHA1
3cb28df9cdf2c71f12fa2787aee61803f32cb574

SHA256
2067e8b021d67e4cf226eb7639874dad3c18c0cb4b2da43f7d5a13400b00e905

SHA512
e2382b13074ab8ef456c3983f7cddbb8d80cab4f9d1772fffce04b133a85b6b89d30f205fe125f2413cf26406f64a5fd86c32d944be58fa6ebaf0170bce79604

Download Submit
memory/692-19-0x0000000000400000-0x0000000000A05000-memory.dmp

Filesize
6.0MB

Download
memory/692-42-0x0000000000400000-0x0000000000A05000-memory.dmp

Filesize
6.0MB

Download
memory/1528-0-0x0000000000400000-0x0000000000A05000-memory.dmp

Filesize
6.0MB

Download
memory/1528-1-0x0000000077774000-0x0000000077776000-memory.dmp

Filesize
8KB

Download
memory/1528-41-0x0000000000400000-0x0000000000A05000-memory.dmp

Filesize
6.0MB

Download
memory/4212-33-0x0000000000400000-0x0000000000A05000-memory.dmp

Filesize
6.0MB

Download
memory/4212-38-0x0000000000400000-0x0000000000A05000-memory.dmp

Filesize
6.0MB

Download
memory/4416-28-0x0000000000400000-0x0000000000A05000-memory.dmp

Filesize
6.0MB

Download
memory/4416-44-0x0000000000400000-0x0000000000A05000-memory.dmp

Filesize
6.0MB

Download
memory/4416-50-0x0000000000400000-0x0000000000A05000-memory.dmp

Filesize
6.0MB

Download
memory/5112-10-0x0000000000400000-0x0000000000A05000-memory.dmp

Filesize
6.0MB

Download
memory/5112-43-0x0000000000400000-0x0000000000A05000-memory.dmp

Filesize
6.0MB

Download
memory/5112-55-0x0000000000400000-0x0000000000A05000-memory.dmp

Filesize
6.0MB

Download