9d79ad5db1f8bf49e2f8d5a33d2e3ef1b92af8f2a27ef0731df6f3cdfa14b1a7

Analysis

max time kernel
148s
max time network
155s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
23-11-2022 17:01

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General

Target

9d79ad5db1f8bf49e2f8d5a33d2e3ef1b92af8f2a27ef0731df6f3cdfa14b1a7.exe
Size

40KB
MD5

5aec4dcb3f9b8f49c96f54e6ea6a19c0
SHA1

869a4154881b9781447b5b4e4532c567fbdaf187
SHA256

9d79ad5db1f8bf49e2f8d5a33d2e3ef1b92af8f2a27ef0731df6f3cdfa14b1a7
SHA512

c382d5e9e59279a25807cfac115239f42ea8cb105dae1b29ac57639a390b074b75465a8f9cf4a6a46c8a35f2c7be6a661b2c2184130cf01fc4fb3852d468ee8e
SSDEEP

384:wXkDATRxyWPD16TrTPbpm1h8iemYJoGkvvGd2m6FqXthuPpSX27LW7FJDlKNAUTt:+pRxymD1uVLKeyMXXuGXkSL

Score

8^/10

persistence

Malware Config

Signatures

Executes dropped EXE 1 IoCs

Processes:

winlogon.exe

pid process

576 winlogon.exe

pid	process
576	winlogon.exe

Loads dropped DLL 2 IoCs

Processes:

9d79ad5db1f8bf49e2f8d5a33d2e3ef1b92af8f2a27ef0731df6f3cdfa14b1a7.exe

pid	process
1928	9d79ad5db1f8bf49e2f8d5a33d2e3ef1b92af8f2a27ef0731df6f3cdfa14b1a7.exe
1928	9d79ad5db1f8bf49e2f8d5a33d2e3ef1b92af8f2a27ef0731df6f3cdfa14b1a7.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

winlogon.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Run	winlogon.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\NVIDIA Media Center Library = "C:\\Users\\Admin\\Admin1\\winlogon.exe"	winlogon.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run	winlogon.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\NVIDIA Media Center Library = "C:\\Users\\Admin\\Admin1\\winlogon.exe"	winlogon.exe

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

System Information Discovery
T1082
Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

9d79ad5db1f8bf49e2f8d5a33d2e3ef1b92af8f2a27ef0731df6f3cdfa14b1a7.exewinlogon.exe

pid process

1928 9d79ad5db1f8bf49e2f8d5a33d2e3ef1b92af8f2a27ef0731df6f3cdfa14b1a7.exe
576 winlogon.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

9d79ad5db1f8bf49e2f8d5a33d2e3ef1b92af8f2a27ef0731df6f3cdfa14b1a7.exe

description	pid	process	target process
PID 1928 wrote to memory of 576	1928	9d79ad5db1f8bf49e2f8d5a33d2e3ef1b92af8f2a27ef0731df6f3cdfa14b1a7.exe	winlogon.exe
PID 1928 wrote to memory of 576	1928	9d79ad5db1f8bf49e2f8d5a33d2e3ef1b92af8f2a27ef0731df6f3cdfa14b1a7.exe	winlogon.exe
PID 1928 wrote to memory of 576	1928	9d79ad5db1f8bf49e2f8d5a33d2e3ef1b92af8f2a27ef0731df6f3cdfa14b1a7.exe	winlogon.exe
PID 1928 wrote to memory of 576	1928	9d79ad5db1f8bf49e2f8d5a33d2e3ef1b92af8f2a27ef0731df6f3cdfa14b1a7.exe	winlogon.exe

C:\Users\Admin\AppData\Local\Temp\9d79ad5db1f8bf49e2f8d5a33d2e3ef1b92af8f2a27ef0731df6f3cdfa14b1a7.exe
"C:\Users\Admin\AppData\Local\Temp\9d79ad5db1f8bf49e2f8d5a33d2e3ef1b92af8f2a27ef0731df6f3cdfa14b1a7.exe"
1⤵
- Loads dropped DLL
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1928

C:\Users\Admin\Admin1\winlogon.exe
"C:\Users\Admin\Admin1\winlogon.exe"
2⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of SetWindowsHookEx
PID:576

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

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\Admin1\winlogon.exe
Filesize
40KB

MD5
5aec4dcb3f9b8f49c96f54e6ea6a19c0

SHA1
869a4154881b9781447b5b4e4532c567fbdaf187

SHA256
9d79ad5db1f8bf49e2f8d5a33d2e3ef1b92af8f2a27ef0731df6f3cdfa14b1a7

SHA512
c382d5e9e59279a25807cfac115239f42ea8cb105dae1b29ac57639a390b074b75465a8f9cf4a6a46c8a35f2c7be6a661b2c2184130cf01fc4fb3852d468ee8e

Download Submit
\Users\Admin\Admin1\winlogon.exe
Filesize
40KB

MD5
5aec4dcb3f9b8f49c96f54e6ea6a19c0

SHA1
869a4154881b9781447b5b4e4532c567fbdaf187

SHA256
9d79ad5db1f8bf49e2f8d5a33d2e3ef1b92af8f2a27ef0731df6f3cdfa14b1a7

SHA512
c382d5e9e59279a25807cfac115239f42ea8cb105dae1b29ac57639a390b074b75465a8f9cf4a6a46c8a35f2c7be6a661b2c2184130cf01fc4fb3852d468ee8e

Download Submit
\Users\Admin\Admin1\winlogon.exe
Filesize
40KB

MD5
5aec4dcb3f9b8f49c96f54e6ea6a19c0

SHA1
869a4154881b9781447b5b4e4532c567fbdaf187

SHA256
9d79ad5db1f8bf49e2f8d5a33d2e3ef1b92af8f2a27ef0731df6f3cdfa14b1a7

SHA512
c382d5e9e59279a25807cfac115239f42ea8cb105dae1b29ac57639a390b074b75465a8f9cf4a6a46c8a35f2c7be6a661b2c2184130cf01fc4fb3852d468ee8e

Download Submit
memory/576-59-0x0000000000000000-mapping.dmp

Download
memory/1928-56-0x00000000762B1000-0x00000000762B3000-memory.dmp

Filesize
8KB

Download