8c859cc8961ad4c823ee352b3cf2d64be9e3b2847a210a3c0ec36ed572acb3a0

Analysis

max time kernel
188s
max time network
202s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
26/11/2022, 01:57

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General

Target
8c859cc8961ad4c823ee352b3cf2d64be9e3b2847a210a3c0ec36ed572acb3a0.exe
Size 84KB
Sample221126-cc95ssgf2v
SHA256 8c859cc8961ad4c823ee352b3cf2d64be9e3b2847a210a3c0ec36ed572acb3a0
MD5 16374bb2dc52687a42af71e845913edf
SHA1 4d3d4575c500c87ae22f77fbc9d117bc2c3dd044
SHA512 1bbd40998d44fc1de54455a9acea839a35759cd68fa740c7de38f4490c7888352205a9fac7116175b61dae545719b7607144a5b3aba55da00803cce38bcd50e3
SSDEEP 768:5I3vElriR9D+z7p8hwrZBJ/oD6kFXQMMSiaWUMK:50j4t8hwrOD6kFXQVSiaW9K
MD5 SHA1 SHA512 SSDEEP

Score

7^/10

persistence

Malware Config

Signatures

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\Control Panel\International\Geo\Nation	8c859cc8961ad4c823ee352b3cf2d64be9e3b2847a210a3c0ec36ed572acb3a0.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\dddd.vbs	WScript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\dddd.vbs	WScript.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\software\microsoft\windows\currentversion\run	WScript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\dddd = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Local\\Temp\\dddd.vbs\""	WScript.exe
Key created	\REGISTRY\MACHINE\software\WOW6432Node\microsoft\windows\currentversion\run	WScript.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\dddd = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Local\\Temp\\dddd.vbs\""	WScript.exe

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

System Information Discovery
T1082

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000_Classes\Local Settings	8c859cc8961ad4c823ee352b3cf2d64be9e3b2847a210a3c0ec36ed572acb3a0.exe

Opens file in notepad (likely ransom note) 1 IoCs

ransomware

pid	Process
5048	NOTEPAD.EXE

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1944 wrote to memory of 5048	1944	8c859cc8961ad4c823ee352b3cf2d64be9e3b2847a210a3c0ec36ed572acb3a0.exe	81
PID 1944 wrote to memory of 5048	1944	8c859cc8961ad4c823ee352b3cf2d64be9e3b2847a210a3c0ec36ed572acb3a0.exe	81
PID 1944 wrote to memory of 5048	1944	8c859cc8961ad4c823ee352b3cf2d64be9e3b2847a210a3c0ec36ed572acb3a0.exe	81
PID 1944 wrote to memory of 2328	1944	8c859cc8961ad4c823ee352b3cf2d64be9e3b2847a210a3c0ec36ed572acb3a0.exe	82
PID 1944 wrote to memory of 2328	1944	8c859cc8961ad4c823ee352b3cf2d64be9e3b2847a210a3c0ec36ed572acb3a0.exe	82
PID 1944 wrote to memory of 2328	1944	8c859cc8961ad4c823ee352b3cf2d64be9e3b2847a210a3c0ec36ed572acb3a0.exe	82

C:\Users\Admin\AppData\Local\Temp\8c859cc8961ad4c823ee352b3cf2d64be9e3b2847a210a3c0ec36ed572acb3a0.exe
"C:\Users\Admin\AppData\Local\Temp\8c859cc8961ad4c823ee352b3cf2d64be9e3b2847a210a3c0ec36ed572acb3a0.exe"
1⤵
- Checks computer location settings
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:1944
- C:\Windows\SysWOW64\NOTEPAD.EXE
  "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Local\Temp\add4.txt
  2⤵
  - Opens file in notepad (likely ransom note)
  PID:5048
- C:\Windows\SysWOW64\WScript.exe
  "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\dddd.vbs"
  2⤵
  - Drops startup file
  - Adds Run key to start application
  PID:2328

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

add4.txt

Path C:\Users\Admin\AppData\Local\Temp\add4.txt
Size 12KB
SHA256 c017fa068c9029e761b001d47ced94fb897645f2808de2169179c4b78d1d1704
MD5 90d9c6ffacac645cd05206fd543c39e7
SHA1 66487ba953899ac0247ddf1c1a401cb3ae4afcad
SHA512 165541f06fcb739966e6be0838f4ba3fd2fe4191da8ffa1b4abf099b610352917ee9232fdbf65835dd89e567310fd7703acf449456e4803cf460ed8ae2595242
SSDEEP 384:olsPAt1QrK4ePrB4DXMM1G5Zdw5lJEAivLip1TIi5bi9L6qyWoFZe9Dhy3:owWQ4PaDXMM1G5jw5xEuHl5+9pyWoFZb
MD5 SHA1 SHA512 SSDEEP

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dddd.vbs

Path C:\Users\Admin\AppData\Local\Temp\dddd.vbs
Size 49KB
SHA256 64c2fb0dc0a942dcef51971b7313a1a6967f5f0dfbb689f3a2318a55e6c0c62a
MD5 2ddda6a9b659992544f453fbec38d3f5
SHA1 3f6f322cdb18ff00e8684284b335b54ea5fe8733
SHA512 4331d81759594cb90633a636ffa5aeecee82d74401db4ec0d09dafde4abddf26d2e643d358960df98ca1d00d1ce68110a806feaab9523be3e5a0ca70074c2687
SSDEEP 768:ED4/Q9KOP7R7mrudGnObeJrCAT6ya5ASTF6kIi0Ey6dqll+EkNBq3VIvNqyPCh+r:A
MD5 SHA1 SHA512 SSDEEP