f95d613ea36bfb78479f786a4f95ca8457df8e312c9faf00d5a4eca9d82a9488

Analysis

max time kernel
94s
max time network
99s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
20-11-2024 21:46

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General

Target

f95d613ea36bfb78479f786a4f95ca8457df8e312c9faf00d5a4eca9d82a9488N.exe
Size

61KB
MD5

543a9d95ea8ec31874a539c1df3e2320
SHA1

7574cfbb8fb0f523fe1465cc71de7f2faf3e6907
SHA256

f95d613ea36bfb78479f786a4f95ca8457df8e312c9faf00d5a4eca9d82a9488
SHA512

fb4c8cfe65b88e8fcd0dbefdc98c5033fd0445b9bf0c1f040c087eb41d44d29aa7a5c54c628f447bb8c2162075756c28b89e7b0d9831194891f5dcf8d3c76abf
SSDEEP

768:H54IBRa482vN8oRdpmfE0irv8UEJ4KKyxtaR068FBah7w/nmkWSuh2ft1U6M:Z4w8wbXpGE0iwNJxtaRaBah76WSuKE6M

Score

10^/10

discovery evasion upx

Malware Config

Signatures

Modifies visibility of file extensions 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-1-5-21-2437139445-1151884604-3026847218-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\HideFileExt = "1"	f95d613ea36bfb78479f786a4f95ca8457df8e312c9faf00d5a4eca9d82a9488N.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\HideFileExt = "1"	startup.bat

Executes dropped EXE 1 IoCs

pid	Process
708	startup.bat

UPX packed file 4 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/4104-0-0x0000000000400000-0x0000000000420000-memory.dmp	upx
behavioral2/files/0x000c000000023b1d-6.dat	upx
behavioral2/memory/4104-11-0x0000000000400000-0x0000000000420000-memory.dmp	upx
behavioral2/memory/708-13-0x0000000000400000-0x0000000000420000-memory.dmp	upx

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 2 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	f95d613ea36bfb78479f786a4f95ca8457df8e312c9faf00d5a4eca9d82a9488N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	startup.bat

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000_Classes\Local Settings	f95d613ea36bfb78479f786a4f95ca8457df8e312c9faf00d5a4eca9d82a9488N.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
4104	f95d613ea36bfb78479f786a4f95ca8457df8e312c9faf00d5a4eca9d82a9488N.exe
708	startup.bat

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4104 wrote to memory of 708	4104	f95d613ea36bfb78479f786a4f95ca8457df8e312c9faf00d5a4eca9d82a9488N.exe	83
PID 4104 wrote to memory of 708	4104	f95d613ea36bfb78479f786a4f95ca8457df8e312c9faf00d5a4eca9d82a9488N.exe	83
PID 4104 wrote to memory of 708	4104	f95d613ea36bfb78479f786a4f95ca8457df8e312c9faf00d5a4eca9d82a9488N.exe	83

C:\Users\Admin\AppData\Local\Temp\f95d613ea36bfb78479f786a4f95ca8457df8e312c9faf00d5a4eca9d82a9488N.exe
"C:\Users\Admin\AppData\Local\Temp\f95d613ea36bfb78479f786a4f95ca8457df8e312c9faf00d5a4eca9d82a9488N.exe"
1⤵
- Modifies visibility of file extensions in Explorer
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4104
- C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup\startup.bat
  "C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup\startup.bat"
  2⤵
  - Modifies visibility of file extensions in Explorer
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:708

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
1⤵
PID:5004

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\ProgramData\Microsoft\Windows\Start Menu\Programs\StartUp\startup.bat

Filesize
61KB

MD5
543a9d95ea8ec31874a539c1df3e2320

SHA1
7574cfbb8fb0f523fe1465cc71de7f2faf3e6907

SHA256
f95d613ea36bfb78479f786a4f95ca8457df8e312c9faf00d5a4eca9d82a9488

SHA512
fb4c8cfe65b88e8fcd0dbefdc98c5033fd0445b9bf0c1f040c087eb41d44d29aa7a5c54c628f447bb8c2162075756c28b89e7b0d9831194891f5dcf8d3c76abf

Download Submit
memory/708-13-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/4104-0-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/4104-11-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download