4fc440b6eab1c9eb9b9b354d37a96af0e3553bb63463cfa75a0cdf21f24e6827

Analysis

max time kernel
52s
max time network
148s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
30/12/2023, 13:49

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target

1a8e24fc6069af2b6af68922e69e90d6.exe
Size

28KB
MD5

1a8e24fc6069af2b6af68922e69e90d6
SHA1

033401eaa5e8858cf8d23149fd8d44b1c307db7d
SHA256

4fc440b6eab1c9eb9b9b354d37a96af0e3553bb63463cfa75a0cdf21f24e6827
SHA512

b1ee23b8174efb261d69c48c98e4152f47fb5ef4980fd9cf0e4d26d441ef82afccaf2ebf2e96871590e098f425b73a8d4668e8ecc6cfb31b87a9a5e663ee202e
SSDEEP

384:fJnFv7fcsSM+MyXyq/AvBDrrt5WXquvQoJBpqNYEu:x5LcQ+PCq/qrWXxlpE

Score

7^/10

persistence

Malware Config

Signatures

Drops startup file 2 IoCs

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

Executes dropped EXE 1 IoCs

pid	Process
2904	winlogon.exe

Adds Run key to start application 2 TTPs 2 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\Run\ = "C:\\Windows\\winlogon.exe"	winlogon.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3470981204-343661084-3367201002-1000\Software\Microsoft\Windows\CurrentVersion\Run\ = "C:\\Windows\\winlogon.exe"	winlogon.exe

Drops file in Windows directory 3 IoCs

description	ioc	Process
File created	C:\Windows\winlogon.exe	1a8e24fc6069af2b6af68922e69e90d6.exe
File opened for modification	C:\Windows\winlogon.exe	1a8e24fc6069af2b6af68922e69e90d6.exe
File created	C:\Windows\winlogon.exe	winlogon.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 16 IoCs

pid	Process
2904	winlogon.exe
2904	winlogon.exe
2904	winlogon.exe
2904	winlogon.exe
2904	winlogon.exe
2904	winlogon.exe
2904	winlogon.exe
2904	winlogon.exe
2904	winlogon.exe
2904	winlogon.exe
2904	winlogon.exe
2904	winlogon.exe
2904	winlogon.exe
2904	winlogon.exe
2904	winlogon.exe
2904	winlogon.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
1672	1a8e24fc6069af2b6af68922e69e90d6.exe
1672	1a8e24fc6069af2b6af68922e69e90d6.exe
2904	winlogon.exe
2904	winlogon.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1672 wrote to memory of 2904	1672	1a8e24fc6069af2b6af68922e69e90d6.exe	1
PID 1672 wrote to memory of 2904	1672	1a8e24fc6069af2b6af68922e69e90d6.exe	1
PID 1672 wrote to memory of 2904	1672	1a8e24fc6069af2b6af68922e69e90d6.exe	1
PID 1672 wrote to memory of 2904	1672	1a8e24fc6069af2b6af68922e69e90d6.exe	1

C:\Windows\winlogon.exe
"C:\Windows\winlogon.exe"
1⤵
- Drops startup file
- Executes dropped EXE
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
PID:2904

C:\Users\Admin\AppData\Local\Temp\1a8e24fc6069af2b6af68922e69e90d6.exe
"C:\Users\Admin\AppData\Local\Temp\1a8e24fc6069af2b6af68922e69e90d6.exe"
1⤵
- Drops file in Windows directory
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1672

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

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Windows\winlogon.exe

Filesize
28KB

MD5
1a8e24fc6069af2b6af68922e69e90d6

SHA1
033401eaa5e8858cf8d23149fd8d44b1c307db7d

SHA256
4fc440b6eab1c9eb9b9b354d37a96af0e3553bb63463cfa75a0cdf21f24e6827

SHA512
b1ee23b8174efb261d69c48c98e4152f47fb5ef4980fd9cf0e4d26d441ef82afccaf2ebf2e96871590e098f425b73a8d4668e8ecc6cfb31b87a9a5e663ee202e

Download Submit