a5e81fe157143ee1e807d13bd4cce2c7c7f9b2b9a340ce3fc7bf0ced66acf4a8

Analysis

max time kernel
120s
max time network
93s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
03/09/2024, 20:05

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

24e16a2c305931b49153dc5d418c2bc0N.exe
Size

2.5MB
MD5

24e16a2c305931b49153dc5d418c2bc0
SHA1

25680ed74739a088902d502789175b9516b968aa
SHA256

a5e81fe157143ee1e807d13bd4cce2c7c7f9b2b9a340ce3fc7bf0ced66acf4a8
SHA512

6aa5094619a804ef3bf22868ce67e37fccb245af0f07e7adf9366489f156282edcad09ea11cb70cc17b479fd0f67464f9a808a7a902c7d8e24613cdb4939d60f
SSDEEP

49152:PxmvumkQ9lY9sgUXdTPSxdQ8KX75IyuWuCjcCqWOyxZ:Pxx9NUFkQx753uWuCyyxZ

Score

10^/10

discovery 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-1-5-21-656926755-4116854191-210765258-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-656926755-4116854191-210765258-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	explorer.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__	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
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	24e16a2c305931b49153dc5d418c2bc0N.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\SystemBiosVersion	svchost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	spoolsv.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	24e16a2c305931b49153dc5d418c2bc0N.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	explorer.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	explorer.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\VideoBiosVersion	svchost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	spoolsv.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	24e16a2c305931b49153dc5d418c2bc0N.exe

Executes dropped EXE 4 IoCs

pid	Process
3096	explorer.exe
1856	spoolsv.exe
4808	svchost.exe
1668	spoolsv.exe

Themida packer 17 IoCs

Detects Themida, an advanced Windows software protection system.

themida

resource	yara_rule
behavioral2/memory/4436-0-0x0000000000400000-0x0000000000A0E000-memory.dmp	themida
behavioral2/memory/3096-10-0x0000000000400000-0x0000000000A0E000-memory.dmp	themida
behavioral2/files/0x0008000000023489-9.dat	themida
behavioral2/files/0x000800000002348b-15.dat	themida
behavioral2/memory/1856-19-0x0000000000400000-0x0000000000A0E000-memory.dmp	themida
behavioral2/files/0x000800000002348d-26.dat	themida
behavioral2/memory/4808-28-0x0000000000400000-0x0000000000A0E000-memory.dmp	themida
behavioral2/memory/1668-33-0x0000000000400000-0x0000000000A0E000-memory.dmp	themida
behavioral2/memory/1668-38-0x0000000000400000-0x0000000000A0E000-memory.dmp	themida
behavioral2/memory/4436-41-0x0000000000400000-0x0000000000A0E000-memory.dmp	themida
behavioral2/memory/1856-42-0x0000000000400000-0x0000000000A0E000-memory.dmp	themida
behavioral2/memory/3096-43-0x0000000000400000-0x0000000000A0E000-memory.dmp	themida
behavioral2/memory/4808-44-0x0000000000400000-0x0000000000A0E000-memory.dmp	themida
behavioral2/memory/3096-45-0x0000000000400000-0x0000000000A0E000-memory.dmp	themida
behavioral2/memory/3096-55-0x0000000000400000-0x0000000000A0E000-memory.dmp	themida
behavioral2/memory/4808-56-0x0000000000400000-0x0000000000A0E000-memory.dmp	themida
behavioral2/memory/3096-57-0x0000000000400000-0x0000000000A0E000-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	24e16a2c305931b49153dc5d418c2bc0N.exe
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	explorer.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	svchost.exe
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	spoolsv.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
4436	24e16a2c305931b49153dc5d418c2bc0N.exe
3096	explorer.exe
1856	spoolsv.exe
4808	svchost.exe
1668	spoolsv.exe

Drops file in Windows directory 4 IoCs

description	ioc	Process
File opened for modification	\??\c:\windows\resources\themes\explorer.exe	24e16a2c305931b49153dc5d418c2bc0N.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

System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	spoolsv.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	24e16a2c305931b49153dc5d418c2bc0N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	explorer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	spoolsv.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
4436	24e16a2c305931b49153dc5d418c2bc0N.exe
4436	24e16a2c305931b49153dc5d418c2bc0N.exe
4436	24e16a2c305931b49153dc5d418c2bc0N.exe
4436	24e16a2c305931b49153dc5d418c2bc0N.exe
4436	24e16a2c305931b49153dc5d418c2bc0N.exe
4436	24e16a2c305931b49153dc5d418c2bc0N.exe
4436	24e16a2c305931b49153dc5d418c2bc0N.exe
4436	24e16a2c305931b49153dc5d418c2bc0N.exe
4436	24e16a2c305931b49153dc5d418c2bc0N.exe
4436	24e16a2c305931b49153dc5d418c2bc0N.exe
4436	24e16a2c305931b49153dc5d418c2bc0N.exe
4436	24e16a2c305931b49153dc5d418c2bc0N.exe
4436	24e16a2c305931b49153dc5d418c2bc0N.exe
4436	24e16a2c305931b49153dc5d418c2bc0N.exe
4436	24e16a2c305931b49153dc5d418c2bc0N.exe
4436	24e16a2c305931b49153dc5d418c2bc0N.exe
4436	24e16a2c305931b49153dc5d418c2bc0N.exe
4436	24e16a2c305931b49153dc5d418c2bc0N.exe
4436	24e16a2c305931b49153dc5d418c2bc0N.exe
4436	24e16a2c305931b49153dc5d418c2bc0N.exe
4436	24e16a2c305931b49153dc5d418c2bc0N.exe
4436	24e16a2c305931b49153dc5d418c2bc0N.exe
4436	24e16a2c305931b49153dc5d418c2bc0N.exe
4436	24e16a2c305931b49153dc5d418c2bc0N.exe
4436	24e16a2c305931b49153dc5d418c2bc0N.exe
4436	24e16a2c305931b49153dc5d418c2bc0N.exe
4436	24e16a2c305931b49153dc5d418c2bc0N.exe
4436	24e16a2c305931b49153dc5d418c2bc0N.exe
4436	24e16a2c305931b49153dc5d418c2bc0N.exe
4436	24e16a2c305931b49153dc5d418c2bc0N.exe
4436	24e16a2c305931b49153dc5d418c2bc0N.exe
4436	24e16a2c305931b49153dc5d418c2bc0N.exe
4436	24e16a2c305931b49153dc5d418c2bc0N.exe
4436	24e16a2c305931b49153dc5d418c2bc0N.exe
3096	explorer.exe
3096	explorer.exe
3096	explorer.exe
3096	explorer.exe
3096	explorer.exe
3096	explorer.exe
3096	explorer.exe
3096	explorer.exe
3096	explorer.exe
3096	explorer.exe
3096	explorer.exe
3096	explorer.exe
3096	explorer.exe
3096	explorer.exe
3096	explorer.exe
3096	explorer.exe
3096	explorer.exe
3096	explorer.exe
3096	explorer.exe
3096	explorer.exe
3096	explorer.exe
3096	explorer.exe
3096	explorer.exe
3096	explorer.exe
3096	explorer.exe
3096	explorer.exe
3096	explorer.exe
3096	explorer.exe
3096	explorer.exe
3096	explorer.exe

Suspicious behavior: GetForegroundWindowSpam 2 IoCs

pid	Process
3096	explorer.exe
4808	svchost.exe

Suspicious use of SetWindowsHookEx 10 IoCs

pid	Process
4436	24e16a2c305931b49153dc5d418c2bc0N.exe
4436	24e16a2c305931b49153dc5d418c2bc0N.exe
3096	explorer.exe
3096	explorer.exe
1856	spoolsv.exe
1856	spoolsv.exe
4808	svchost.exe
4808	svchost.exe
1668	spoolsv.exe
1668	spoolsv.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 4436 wrote to memory of 3096	4436	24e16a2c305931b49153dc5d418c2bc0N.exe	88
PID 4436 wrote to memory of 3096	4436	24e16a2c305931b49153dc5d418c2bc0N.exe	88
PID 4436 wrote to memory of 3096	4436	24e16a2c305931b49153dc5d418c2bc0N.exe	88
PID 3096 wrote to memory of 1856	3096	explorer.exe	89
PID 3096 wrote to memory of 1856	3096	explorer.exe	89
PID 3096 wrote to memory of 1856	3096	explorer.exe	89
PID 1856 wrote to memory of 4808	1856	spoolsv.exe	90
PID 1856 wrote to memory of 4808	1856	spoolsv.exe	90
PID 1856 wrote to memory of 4808	1856	spoolsv.exe	90
PID 4808 wrote to memory of 1668	4808	svchost.exe	92
PID 4808 wrote to memory of 1668	4808	svchost.exe	92
PID 4808 wrote to memory of 1668	4808	svchost.exe	92

C:\Users\Admin\AppData\Local\Temp\24e16a2c305931b49153dc5d418c2bc0N.exe
"C:\Users\Admin\AppData\Local\Temp\24e16a2c305931b49153dc5d418c2bc0N.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
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4436
- \??\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
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3096
- - \??\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
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:1856
  - - \??\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
      System Location Discovery: System Language Discovery
      Suspicious behavior: GetForegroundWindowSpam
      Suspicious use of SetWindowsHookEx
      Suspicious use of WriteProcessMemory
      PID:4808
    - - \??\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
        System Location Discovery: System Language Discovery
        Suspicious use of SetWindowsHookEx
        
        PID:1668

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

System Location Discovery

T1614

System Language Discovery

T1614.001

Virtualization/Sandbox Evasion

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Windows\Resources\spoolsv.exe

Filesize
2.5MB

MD5
7f5966aac8040b928ffcdce3fba3267c

SHA1
225ab1b6e895c64193af4c53f16a4d2f3e2789c0

SHA256
122545689065def293b0481ef623a621d45dba0eda8b055c10e3c4d368c34181

SHA512
ebefba7e5a747d26db4f9afcf5a34b086f0f531d0cac563a1d29f24ec3ed0cad9a6c7516a215acd4df4de2031b6c28e81b0f0c7177c4a2e6b9dfe57bcd2265ad

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

Filesize
2.5MB

MD5
13be2ac424e775e70c797a34526db023

SHA1
705bcf435f305c747951ecc85caaa0987b1bbf30

SHA256
a0cf3d87425219a1dbb1de8e6977b0d7d5196658f5d3562d3eade223fed4c5f8

SHA512
656999fc06b09479e2fe5e1fe46aa4a06e2727c506c6e5b0b6156e5daef34a6ea43ae409458fd17e40a12bf20fc5d882d5f7d571f5a8eb015b7f4e03aa2a3741

Download Submit
\??\c:\windows\resources\themes\explorer.exe

Filesize
2.5MB

MD5
699e1341a262dd9e97a0290e067cc0f6

SHA1
d198157a5d3a357e06f9b906ecb5f813f34a0539

SHA256
eabe02e86d86698dd13a0722c3526af413da95949d5700be2c903379feceb4fc

SHA512
ce22f7576340376d0adf804fe98cbcb883976ae63ad61f51b7fc5c85ffaee343c4606df3645bcab81d7754fc2c905caa188182735200b10e04d883c48d4f2f01

Download Submit
memory/1668-33-0x0000000000400000-0x0000000000A0E000-memory.dmp

Filesize
6.1MB

Download
memory/1668-38-0x0000000000400000-0x0000000000A0E000-memory.dmp

Filesize
6.1MB

Download
memory/1856-19-0x0000000000400000-0x0000000000A0E000-memory.dmp

Filesize
6.1MB

Download
memory/1856-42-0x0000000000400000-0x0000000000A0E000-memory.dmp

Filesize
6.1MB

Download
memory/3096-55-0x0000000000400000-0x0000000000A0E000-memory.dmp

Filesize
6.1MB

Download
memory/3096-10-0x0000000000400000-0x0000000000A0E000-memory.dmp

Filesize
6.1MB

Download
memory/3096-43-0x0000000000400000-0x0000000000A0E000-memory.dmp

Filesize
6.1MB

Download
memory/3096-57-0x0000000000400000-0x0000000000A0E000-memory.dmp

Filesize
6.1MB

Download
memory/3096-45-0x0000000000400000-0x0000000000A0E000-memory.dmp

Filesize
6.1MB

Download
memory/4436-1-0x0000000077AC4000-0x0000000077AC6000-memory.dmp

Filesize
8KB

Download
memory/4436-0-0x0000000000400000-0x0000000000A0E000-memory.dmp

Filesize
6.1MB

Download
memory/4436-41-0x0000000000400000-0x0000000000A0E000-memory.dmp

Filesize
6.1MB

Download
memory/4808-28-0x0000000000400000-0x0000000000A0E000-memory.dmp

Filesize
6.1MB

Download
memory/4808-56-0x0000000000400000-0x0000000000A0E000-memory.dmp

Filesize
6.1MB

Download
memory/4808-44-0x0000000000400000-0x0000000000A0E000-memory.dmp

Filesize
6.1MB

Download