14c96fd6748713e8d1c561a073b6d777c4da7b31f3b1157c2698f24f16e75d5e

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
26/04/2024, 10:54

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General

Target

newstuff.exe
Size

2.8MB
MD5

65f8a01db5c275706e9f13d875441b25
SHA1

906103ef1d080d47a1159fce236c7450b95917f3
SHA256

14c96fd6748713e8d1c561a073b6d777c4da7b31f3b1157c2698f24f16e75d5e
SHA512

6d65b3cd5dfe6c8ca49032e01b79b9894ac0340ec6451a89e4199eb200983ac0d6c63952b70ec99c42a7ea72b30304ed2d5e6ea8980de1f8fbccc1d368498a7b
SSDEEP

49152:XXzhpDtKSK1cb8PGK+Tfuqmpc3elWo8GnQAsYZEV4fa/me:XXzhW148Pd+Tf1mpcOldJQ3/V4yx

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-1-5-21-355664440-2199602304-1223909400-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	explorer.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-355664440-2199602304-1223909400-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	svchost.exe

Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 6 IoCs

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
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__	newstuff.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	icsys.icn.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	explorer.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	spoolsv.exe

Checks BIOS information in registry 2 TTPs 12 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	spoolsv.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	newstuff.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	icsys.icn.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	spoolsv.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	svchost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	spoolsv.exe
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\SystemBiosVersion	newstuff.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	icsys.icn.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	explorer.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	explorer.exe

Executes dropped EXE 6 IoCs

pid	Process
4432	newstuff.exe
3564	icsys.icn.exe
4788	explorer.exe
3268	spoolsv.exe
4172	svchost.exe
3236	spoolsv.exe

Themida packer 20 IoCs

Detects Themida, an advanced Windows software protection system.

themida

resource	yara_rule
behavioral2/memory/4648-0-0x0000000000400000-0x0000000000A16000-memory.dmp	themida
behavioral2/files/0x00070000000233ed-10.dat	themida
behavioral2/files/0x00080000000233f1-18.dat	themida
behavioral2/memory/4788-20-0x0000000000400000-0x0000000000A16000-memory.dmp	themida
behavioral2/files/0x00090000000233ea-27.dat	themida
behavioral2/memory/3268-29-0x0000000000400000-0x0000000000A16000-memory.dmp	themida
behavioral2/files/0x00080000000233f5-36.dat	themida
behavioral2/memory/4172-38-0x0000000000400000-0x0000000000A16000-memory.dmp	themida
behavioral2/memory/4648-43-0x0000000000400000-0x0000000000A16000-memory.dmp	themida
behavioral2/memory/3236-44-0x0000000000400000-0x0000000000A16000-memory.dmp	themida
behavioral2/memory/3236-48-0x0000000000400000-0x0000000000A16000-memory.dmp	themida
behavioral2/memory/3268-49-0x0000000000400000-0x0000000000A16000-memory.dmp	themida
behavioral2/memory/3564-50-0x0000000000400000-0x0000000000A16000-memory.dmp	themida
behavioral2/memory/4648-51-0x0000000000400000-0x0000000000A16000-memory.dmp	themida
behavioral2/memory/4788-52-0x0000000000400000-0x0000000000A16000-memory.dmp	themida
behavioral2/memory/4172-53-0x0000000000400000-0x0000000000A16000-memory.dmp	themida
behavioral2/memory/4172-59-0x0000000000400000-0x0000000000A16000-memory.dmp	themida
behavioral2/memory/4788-64-0x0000000000400000-0x0000000000A16000-memory.dmp	themida
behavioral2/memory/4788-70-0x0000000000400000-0x0000000000A16000-memory.dmp	themida
behavioral2/memory/4788-72-0x0000000000400000-0x0000000000A16000-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\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
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\RunOnce\Explorer = "c:\\windows\\resources\\themes\\explorer.exe RO"	explorer.exe

Checks whether UAC is enabled 1 TTPs 6 IoCs

evasion trojan

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	newstuff.exe
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	icsys.icn.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 6 IoCs

pid	Process
4648	newstuff.exe
3564	icsys.icn.exe
4788	explorer.exe
3268	spoolsv.exe
4172	svchost.exe
3236	spoolsv.exe

Drops file in Windows directory 5 IoCs

description	ioc	Process
File opened for modification	C:\Windows\Resources\Themes\icsys.icn.exe	newstuff.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

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
4648	newstuff.exe
4648	newstuff.exe
4648	newstuff.exe
4648	newstuff.exe
4648	newstuff.exe
4648	newstuff.exe
4648	newstuff.exe
4648	newstuff.exe
4648	newstuff.exe
4648	newstuff.exe
4648	newstuff.exe
4648	newstuff.exe
4648	newstuff.exe
4648	newstuff.exe
4648	newstuff.exe
4648	newstuff.exe
4648	newstuff.exe
4648	newstuff.exe
4648	newstuff.exe
4648	newstuff.exe
4648	newstuff.exe
4648	newstuff.exe
4648	newstuff.exe
4648	newstuff.exe
4648	newstuff.exe
4648	newstuff.exe
4648	newstuff.exe
4648	newstuff.exe
4648	newstuff.exe
4648	newstuff.exe
4648	newstuff.exe
4648	newstuff.exe
3564	icsys.icn.exe
3564	icsys.icn.exe
3564	icsys.icn.exe
3564	icsys.icn.exe
3564	icsys.icn.exe
3564	icsys.icn.exe
3564	icsys.icn.exe
3564	icsys.icn.exe
3564	icsys.icn.exe
3564	icsys.icn.exe
3564	icsys.icn.exe
3564	icsys.icn.exe
3564	icsys.icn.exe
3564	icsys.icn.exe
3564	icsys.icn.exe
3564	icsys.icn.exe
3564	icsys.icn.exe
3564	icsys.icn.exe
3564	icsys.icn.exe
3564	icsys.icn.exe
3564	icsys.icn.exe
3564	icsys.icn.exe
3564	icsys.icn.exe
3564	icsys.icn.exe
3564	icsys.icn.exe
3564	icsys.icn.exe
3564	icsys.icn.exe
3564	icsys.icn.exe
3564	icsys.icn.exe
3564	icsys.icn.exe
3564	icsys.icn.exe
3564	icsys.icn.exe

Suspicious behavior: GetForegroundWindowSpam 2 IoCs

pid	Process
4788	explorer.exe
4172	svchost.exe

Suspicious use of SetWindowsHookEx 12 IoCs

pid	Process
4648	newstuff.exe
4648	newstuff.exe
3564	icsys.icn.exe
3564	icsys.icn.exe
4788	explorer.exe
4788	explorer.exe
3268	spoolsv.exe
3268	spoolsv.exe
4172	svchost.exe
4172	svchost.exe
3236	spoolsv.exe
3236	spoolsv.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 4648 wrote to memory of 4432	4648	newstuff.exe	85
PID 4648 wrote to memory of 4432	4648	newstuff.exe	85
PID 4648 wrote to memory of 3564	4648	newstuff.exe	86
PID 4648 wrote to memory of 3564	4648	newstuff.exe	86
PID 4648 wrote to memory of 3564	4648	newstuff.exe	86
PID 3564 wrote to memory of 4788	3564	icsys.icn.exe	88
PID 3564 wrote to memory of 4788	3564	icsys.icn.exe	88
PID 3564 wrote to memory of 4788	3564	icsys.icn.exe	88
PID 4788 wrote to memory of 3268	4788	explorer.exe	89
PID 4788 wrote to memory of 3268	4788	explorer.exe	89
PID 4788 wrote to memory of 3268	4788	explorer.exe	89
PID 3268 wrote to memory of 4172	3268	spoolsv.exe	90
PID 3268 wrote to memory of 4172	3268	spoolsv.exe	90
PID 3268 wrote to memory of 4172	3268	spoolsv.exe	90
PID 4172 wrote to memory of 3236	4172	svchost.exe	91
PID 4172 wrote to memory of 3236	4172	svchost.exe	91
PID 4172 wrote to memory of 3236	4172	svchost.exe	91

C:\Users\Admin\AppData\Local\Temp\newstuff.exe
"C:\Users\Admin\AppData\Local\Temp\newstuff.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:4648
- \??\c:\users\admin\appdata\local\temp\newstuff.exe
  c:\users\admin\appdata\local\temp\newstuff.exe
  2⤵
  - Executes dropped EXE
  PID:4432
- C:\Windows\Resources\Themes\icsys.icn.exe
  C:\Windows\Resources\Themes\icsys.icn.exe
  2⤵
  - 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 behavior: EnumeratesProcesses
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3564
- - \??\c:\windows\resources\themes\explorer.exe
    c:\windows\resources\themes\explorer.exe
    3⤵
    - 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: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:4788
  - - \??\c:\windows\resources\spoolsv.exe
      c:\windows\resources\spoolsv.exe SE
      4⤵
      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:3268
    - - \??\c:\windows\resources\svchost.exe
        
        c:\windows\resources\svchost.exe
        5⤵
        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:4172
      - \??\c:\windows\resources\spoolsv.exe
        
        c:\windows\resources\spoolsv.exe PR
        6⤵
        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:3236

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:\Users\Admin\AppData\Local\Temp\newstuff.exe

Filesize
239KB

MD5
6109c703543ce917ab5b9975735f78ef

SHA1
88c6d3fc7076dce3826f8f03feac041cc15fd9b8

SHA256
3e1cb481036dba2c97f3d390b7266d194a2bc7b2640ddc085d8e9c8d43baa0b1

SHA512
94234381bff3cf743e3c441b820595a084794f822e35a2b91cf28cf59517eff4fb8d27cc6490861c463f78d03860b02e592a20a66e3b367a515460e9ccf3597e

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

Filesize
2.6MB

MD5
68f2b32f1df6f58e0b7f53e551ea55fb

SHA1
ef5bc5a231619488dc32ad41affd51f503b97b53

SHA256
b33bb97f2b41f1493859393791ebee9699407deda6c7ef45ba29cc668e57b9ad

SHA512
98948ff9681883af8a1fdc43cce28d0535c6fd4cc24b86b7c637533c8bac45fe75e3427ab46f6cef2e52f069cc210d69d09c86975442ff43b24c5e5c38375b44

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

Filesize
2.6MB

MD5
d513836f9ae72161ba1a862e8e13c43a

SHA1
8ed0157cd5ecb06d10389841eef74dbc2a2bf1fa

SHA256
b92bd1d20732e76e41c0149cff89a6302c2f854730369a198843eef3adfdde95

SHA512
b9a895a1a71b0fd9a21e253cfbe575be6549611b8e44c67646410d776a6ccb283ae08e1abc8a30fedbc2f01fd482e79abccc8a2983bd42bf624fcd2ee10fd59a

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

Filesize
2.6MB

MD5
c536a1b62e46f6e3ba6326f3bb884855

SHA1
ea63309e8200cef15cf2fdd312cce1994e747cfc

SHA256
bb34e52427cf66446da880a69b8a00c9c79a67c59f3698ee7ce11a4c5f9d85d0

SHA512
0e86b410bcfddbe1cf6b14fb0df0350dac41e7ef5083c53771331fdf5ac9f859671e725266ff4f4ac572f2b919d4c1c7973219ce1eb4b5654da7c5e8ae579ea1

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

Filesize
2.6MB

MD5
1e34ca5d5a44d2db4ed10f6d348210bf

SHA1
e68021dcb68fb1c46e12e77c3f82ddae9d0796a2

SHA256
675f4c182852452e10e2dbff212b745364f4fbf484639317737febd48376dc70

SHA512
1ff649447eafd64dbf0139b7895c2fab6ff76c537b137d416e085765c448d278c53f452a9666a2533e191b10e3def7b4747dc9bf08609a1ad4e72b50856cf678

Download Submit
memory/3236-44-0x0000000000400000-0x0000000000A16000-memory.dmp

Filesize
6.1MB

Download
memory/3236-48-0x0000000000400000-0x0000000000A16000-memory.dmp

Filesize
6.1MB

Download
memory/3268-49-0x0000000000400000-0x0000000000A16000-memory.dmp

Filesize
6.1MB

Download
memory/3268-29-0x0000000000400000-0x0000000000A16000-memory.dmp

Filesize
6.1MB

Download
memory/3564-50-0x0000000000400000-0x0000000000A16000-memory.dmp

Filesize
6.1MB

Download
memory/4172-59-0x0000000000400000-0x0000000000A16000-memory.dmp

Filesize
6.1MB

Download
memory/4172-53-0x0000000000400000-0x0000000000A16000-memory.dmp

Filesize
6.1MB

Download
memory/4172-38-0x0000000000400000-0x0000000000A16000-memory.dmp

Filesize
6.1MB

Download
memory/4648-51-0x0000000000400000-0x0000000000A16000-memory.dmp

Filesize
6.1MB

Download
memory/4648-43-0x0000000000400000-0x0000000000A16000-memory.dmp

Filesize
6.1MB

Download
memory/4648-0-0x0000000000400000-0x0000000000A16000-memory.dmp

Filesize
6.1MB

Download
memory/4648-1-0x0000000077744000-0x0000000077746000-memory.dmp

Filesize
8KB

Download
memory/4788-52-0x0000000000400000-0x0000000000A16000-memory.dmp

Filesize
6.1MB

Download
memory/4788-20-0x0000000000400000-0x0000000000A16000-memory.dmp

Filesize
6.1MB

Download
memory/4788-64-0x0000000000400000-0x0000000000A16000-memory.dmp

Filesize
6.1MB

Download
memory/4788-70-0x0000000000400000-0x0000000000A16000-memory.dmp

Filesize
6.1MB

Download
memory/4788-72-0x0000000000400000-0x0000000000A16000-memory.dmp

Filesize
6.1MB

Download