eeea17ba1c4919676b43c9081b87e0e4c0d2e86e29e1ad7eedfc6533439669fd

Analysis

max time kernel
120s
max time network
109s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
29-08-2024 00:00

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General

Target

e71c4b372949989e2a99bc7edb25a460N.exe
Size

2.5MB
MD5

e71c4b372949989e2a99bc7edb25a460
SHA1

b763bc18cef63a7e1a125b9a961176629fcd62a8
SHA256

eeea17ba1c4919676b43c9081b87e0e4c0d2e86e29e1ad7eedfc6533439669fd
SHA512

fbf28d753f322c76da1fb1fd56f644df8eec886311692e252ec7cf20696ab498ce71f26ebf7be8b09f42c66d56886c1e7e14d78f6dd9f6e8bd6d121dd69fd1d3
SSDEEP

49152:XxmvumkQ9lY9sgUXdTPSxdQ8KX75IyuWuCjcCqWOyxj:Xxx9NUFkQx753uWuCyyxj

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-1-5-21-786284298-625481688-3210388970-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-786284298-625481688-3210388970-1000\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__	e71c4b372949989e2a99bc7edb25a460N.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	spoolsv.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	e71c4b372949989e2a99bc7edb25a460N.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\SystemBiosVersion	svchost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	e71c4b372949989e2a99bc7edb25a460N.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

Executes dropped EXE 4 IoCs

pid	Process
5088	explorer.exe
2864	spoolsv.exe
1548	svchost.exe
4396	spoolsv.exe

Themida packer 15 IoCs

Detects Themida, an advanced Windows software protection system.

themida

resource	yara_rule
behavioral2/memory/876-0-0x0000000000400000-0x0000000000A0E000-memory.dmp	themida
behavioral2/files/0x00080000000234c4-8.dat	themida
behavioral2/memory/5088-10-0x0000000000400000-0x0000000000A0E000-memory.dmp	themida
behavioral2/files/0x00090000000234c1-15.dat	themida
behavioral2/memory/2864-19-0x0000000000400000-0x0000000000A0E000-memory.dmp	themida
behavioral2/files/0x00080000000234c8-26.dat	themida
behavioral2/memory/1548-28-0x0000000000400000-0x0000000000A0E000-memory.dmp	themida
behavioral2/memory/4396-33-0x0000000000400000-0x0000000000A0E000-memory.dmp	themida
behavioral2/memory/4396-37-0x0000000000400000-0x0000000000A0E000-memory.dmp	themida
behavioral2/memory/2864-39-0x0000000000400000-0x0000000000A0E000-memory.dmp	themida
behavioral2/memory/876-41-0x0000000000400000-0x0000000000A0E000-memory.dmp	themida
behavioral2/memory/5088-42-0x0000000000400000-0x0000000000A0E000-memory.dmp	themida
behavioral2/memory/1548-44-0x0000000000400000-0x0000000000A0E000-memory.dmp	themida
behavioral2/memory/1548-55-0x0000000000400000-0x0000000000A0E000-memory.dmp	themida
behavioral2/memory/5088-56-0x0000000000400000-0x0000000000A0E000-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	e71c4b372949989e2a99bc7edb25a460N.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
876	e71c4b372949989e2a99bc7edb25a460N.exe
5088	explorer.exe
2864	spoolsv.exe
1548	svchost.exe
4396	spoolsv.exe

Drops file in Windows directory 4 IoCs

description	ioc	Process
File opened for modification	\??\c:\windows\resources\themes\explorer.exe	e71c4b372949989e2a99bc7edb25a460N.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	spoolsv.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	e71c4b372949989e2a99bc7edb25a460N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	explorer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	spoolsv.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
876	e71c4b372949989e2a99bc7edb25a460N.exe
876	e71c4b372949989e2a99bc7edb25a460N.exe
876	e71c4b372949989e2a99bc7edb25a460N.exe
876	e71c4b372949989e2a99bc7edb25a460N.exe
876	e71c4b372949989e2a99bc7edb25a460N.exe
876	e71c4b372949989e2a99bc7edb25a460N.exe
876	e71c4b372949989e2a99bc7edb25a460N.exe
876	e71c4b372949989e2a99bc7edb25a460N.exe
876	e71c4b372949989e2a99bc7edb25a460N.exe
876	e71c4b372949989e2a99bc7edb25a460N.exe
876	e71c4b372949989e2a99bc7edb25a460N.exe
876	e71c4b372949989e2a99bc7edb25a460N.exe
876	e71c4b372949989e2a99bc7edb25a460N.exe
876	e71c4b372949989e2a99bc7edb25a460N.exe
876	e71c4b372949989e2a99bc7edb25a460N.exe
876	e71c4b372949989e2a99bc7edb25a460N.exe
876	e71c4b372949989e2a99bc7edb25a460N.exe
876	e71c4b372949989e2a99bc7edb25a460N.exe
876	e71c4b372949989e2a99bc7edb25a460N.exe
876	e71c4b372949989e2a99bc7edb25a460N.exe
876	e71c4b372949989e2a99bc7edb25a460N.exe
876	e71c4b372949989e2a99bc7edb25a460N.exe
876	e71c4b372949989e2a99bc7edb25a460N.exe
876	e71c4b372949989e2a99bc7edb25a460N.exe
876	e71c4b372949989e2a99bc7edb25a460N.exe
876	e71c4b372949989e2a99bc7edb25a460N.exe
876	e71c4b372949989e2a99bc7edb25a460N.exe
876	e71c4b372949989e2a99bc7edb25a460N.exe
876	e71c4b372949989e2a99bc7edb25a460N.exe
876	e71c4b372949989e2a99bc7edb25a460N.exe
876	e71c4b372949989e2a99bc7edb25a460N.exe
876	e71c4b372949989e2a99bc7edb25a460N.exe
876	e71c4b372949989e2a99bc7edb25a460N.exe
876	e71c4b372949989e2a99bc7edb25a460N.exe
5088	explorer.exe
5088	explorer.exe
5088	explorer.exe
5088	explorer.exe
5088	explorer.exe
5088	explorer.exe
5088	explorer.exe
5088	explorer.exe
5088	explorer.exe
5088	explorer.exe
5088	explorer.exe
5088	explorer.exe
5088	explorer.exe
5088	explorer.exe
5088	explorer.exe
5088	explorer.exe
5088	explorer.exe
5088	explorer.exe
5088	explorer.exe
5088	explorer.exe
5088	explorer.exe
5088	explorer.exe
5088	explorer.exe
5088	explorer.exe
5088	explorer.exe
5088	explorer.exe
5088	explorer.exe
5088	explorer.exe
5088	explorer.exe
5088	explorer.exe

Suspicious behavior: GetForegroundWindowSpam 2 IoCs

pid	Process
5088	explorer.exe
1548	svchost.exe

Suspicious use of SetWindowsHookEx 10 IoCs

pid	Process
876	e71c4b372949989e2a99bc7edb25a460N.exe
876	e71c4b372949989e2a99bc7edb25a460N.exe
5088	explorer.exe
5088	explorer.exe
2864	spoolsv.exe
2864	spoolsv.exe
1548	svchost.exe
1548	svchost.exe
4396	spoolsv.exe
4396	spoolsv.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 876 wrote to memory of 5088	876	e71c4b372949989e2a99bc7edb25a460N.exe	84
PID 876 wrote to memory of 5088	876	e71c4b372949989e2a99bc7edb25a460N.exe	84
PID 876 wrote to memory of 5088	876	e71c4b372949989e2a99bc7edb25a460N.exe	84
PID 5088 wrote to memory of 2864	5088	explorer.exe	85
PID 5088 wrote to memory of 2864	5088	explorer.exe	85
PID 5088 wrote to memory of 2864	5088	explorer.exe	85
PID 2864 wrote to memory of 1548	2864	spoolsv.exe	86
PID 2864 wrote to memory of 1548	2864	spoolsv.exe	86
PID 2864 wrote to memory of 1548	2864	spoolsv.exe	86
PID 1548 wrote to memory of 4396	1548	svchost.exe	88
PID 1548 wrote to memory of 4396	1548	svchost.exe	88
PID 1548 wrote to memory of 4396	1548	svchost.exe	88

C:\Users\Admin\AppData\Local\Temp\e71c4b372949989e2a99bc7edb25a460N.exe
"C:\Users\Admin\AppData\Local\Temp\e71c4b372949989e2a99bc7edb25a460N.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:876
- \??\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:5088
- - \??\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:2864
  - - \??\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:1548
    - - \??\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:4396

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

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Downloads

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

Filesize
2.5MB

MD5
54ac044dbd06ed2c5b93bd0c37272333

SHA1
b1a6d4c1b5a22a85eb822fe7cb2790cfc1768691

SHA256
a8a97fb0bea94b0304d5e1f70adc976f83d3d850790809d455c730b7035f1801

SHA512
6feac33f92ed42997107fad3f0ae31f87096dd1d8ebed202559d9f24e38b9a907fa2993102651183eff91883421235c581f8090c24f43fedfe132fbf63e00e93

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

Filesize
2.5MB

MD5
7f5e29677573bc166162a52612a065a7

SHA1
8e6e86393a650747ab23541fbd4a02b00363101e

SHA256
eb8ae663a6bc766b3c34263cb343ee3c213e38243d35841a74e546a65f0cfdba

SHA512
b91a8df8c091ae35a52d1268acb9fb2028f3e158c12908208233c66fb3426653b73f0b6ad87f8f6bcd3e084072dc32ed4ab77d5653438d89014712d844bd46bc

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

Filesize
2.5MB

MD5
f41770119020dbe0745e7e0e2b8b76e0

SHA1
07ff57e1ba7104822e957b6f24c2d7527c76cf06

SHA256
2bc0cbfc948fa1fea6a92955f03744d133508f77169b89b6c327ed4990fa4b28

SHA512
7ae900d2fdd479939e19f5f13694c13f68e21ec8a9dc2a6e2f2b140ded1acff65468d99228575e92be44e4e83ba575802cb55c55ab0ffe1d12ac99fdce04bea2

Download Submit
memory/876-41-0x0000000000400000-0x0000000000A0E000-memory.dmp

Filesize
6.1MB

Download
memory/876-1-0x0000000077CB4000-0x0000000077CB6000-memory.dmp

Filesize
8KB

Download
memory/876-0-0x0000000000400000-0x0000000000A0E000-memory.dmp

Filesize
6.1MB

Download
memory/1548-55-0x0000000000400000-0x0000000000A0E000-memory.dmp

Filesize
6.1MB

Download
memory/1548-28-0x0000000000400000-0x0000000000A0E000-memory.dmp

Filesize
6.1MB

Download
memory/1548-44-0x0000000000400000-0x0000000000A0E000-memory.dmp

Filesize
6.1MB

Download
memory/2864-19-0x0000000000400000-0x0000000000A0E000-memory.dmp

Filesize
6.1MB

Download
memory/2864-39-0x0000000000400000-0x0000000000A0E000-memory.dmp

Filesize
6.1MB

Download
memory/4396-33-0x0000000000400000-0x0000000000A0E000-memory.dmp

Filesize
6.1MB

Download
memory/4396-37-0x0000000000400000-0x0000000000A0E000-memory.dmp

Filesize
6.1MB

Download
memory/5088-42-0x0000000000400000-0x0000000000A0E000-memory.dmp

Filesize
6.1MB

Download
memory/5088-10-0x0000000000400000-0x0000000000A0E000-memory.dmp

Filesize
6.1MB

Download
memory/5088-56-0x0000000000400000-0x0000000000A0E000-memory.dmp

Filesize
6.1MB

Download