4420fef87deee22a1ebda98c39da4aaa061da8a6068d7ff433ea7d1634c2f8be

General

Target

4420fef87deee22a1ebda98c39da4aaa061da8a6068d7ff433ea7d1634c2f8be.exe
Size

26KB
MD5

170841653a1dce31f784d13319210b50
SHA1

ee8b74a035fcba3cd3a2a5cb00f61179f604238d
SHA256

4420fef87deee22a1ebda98c39da4aaa061da8a6068d7ff433ea7d1634c2f8be
SHA512

f3a7ba7ec7ecc87e9de6969a5fddb1c10558150c3b2d6647b18e6b3e67e2b92b71986f3d27dd135f430b150c357447b6dc3eb94151f0f25051c895e12d04f965
SSDEEP

384:5VgGwfec5YzWUIN5JJO7ocuDg+nUHJg0tx0/PUxS20:wbWqYzpITPAKuHJg070Ux

Score

8^/10

persistence upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

Processes:

winlogon.exe

pid process

3352 winlogon.exe

pid	process
3352	winlogon.exe

UPX packed file 5 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/3408-140-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3408-142-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3408-143-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3408-146-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3408-147-0x0000000000400000-0x000000000040B000-memory.dmp	upx

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

Processes:

4420fef87deee22a1ebda98c39da4aaa061da8a6068d7ff433ea7d1634c2f8be.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\Control Panel\International\Geo\Nation	4420fef87deee22a1ebda98c39da4aaa061da8a6068d7ff433ea7d1634c2f8be.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\Software\Microsoft\Windows\CurrentVersion\Run	svchost.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Windows Logon Applicationedc = "C:\\Users\\Admin\\winlogon.exe"	svchost.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

winlogon.exe

description pid process target process

PID 3352 set thread context of 3408 3352 winlogon.exe svchost.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 3 IoCs

Processes:

4420fef87deee22a1ebda98c39da4aaa061da8a6068d7ff433ea7d1634c2f8be.exewinlogon.exesvchost.exe

pid process

1152 4420fef87deee22a1ebda98c39da4aaa061da8a6068d7ff433ea7d1634c2f8be.exe
3352 winlogon.exe
3408 svchost.exe

description	pid	process	target process
PID 3352 set thread context of 3408	3352	winlogon.exe	svchost.exe

pid	process
1152	4420fef87deee22a1ebda98c39da4aaa061da8a6068d7ff433ea7d1634c2f8be.exe
3352	winlogon.exe
3408	svchost.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

4420fef87deee22a1ebda98c39da4aaa061da8a6068d7ff433ea7d1634c2f8be.exewinlogon.exe

description	pid	process	target process
PID 1152 wrote to memory of 3352	1152	4420fef87deee22a1ebda98c39da4aaa061da8a6068d7ff433ea7d1634c2f8be.exe	winlogon.exe
PID 1152 wrote to memory of 3352	1152	4420fef87deee22a1ebda98c39da4aaa061da8a6068d7ff433ea7d1634c2f8be.exe	winlogon.exe
PID 1152 wrote to memory of 3352	1152	4420fef87deee22a1ebda98c39da4aaa061da8a6068d7ff433ea7d1634c2f8be.exe	winlogon.exe
PID 3352 wrote to memory of 3408	3352	winlogon.exe	svchost.exe
PID 3352 wrote to memory of 3408	3352	winlogon.exe	svchost.exe
PID 3352 wrote to memory of 3408	3352	winlogon.exe	svchost.exe
PID 3352 wrote to memory of 3408	3352	winlogon.exe	svchost.exe
PID 3352 wrote to memory of 3408	3352	winlogon.exe	svchost.exe
PID 3352 wrote to memory of 3408	3352	winlogon.exe	svchost.exe
PID 3352 wrote to memory of 3408	3352	winlogon.exe	svchost.exe
PID 3352 wrote to memory of 3408	3352	winlogon.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\4420fef87deee22a1ebda98c39da4aaa061da8a6068d7ff433ea7d1634c2f8be.exe
"C:\Users\Admin\AppData\Local\Temp\4420fef87deee22a1ebda98c39da4aaa061da8a6068d7ff433ea7d1634c2f8be.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1152

C:\Users\Admin\winlogon.exe
"C:\Users\Admin\winlogon.exe"
2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3352

C:\Windows\SysWOW64\svchost.exe
C:\Windows\system32\svchost.exe
3⤵
- Adds Run key to start application
- Suspicious use of SetWindowsHookEx
PID:3408

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\winlogon.exe

Filesize
26KB

MD5
170841653a1dce31f784d13319210b50

SHA1
ee8b74a035fcba3cd3a2a5cb00f61179f604238d

SHA256
4420fef87deee22a1ebda98c39da4aaa061da8a6068d7ff433ea7d1634c2f8be

SHA512
f3a7ba7ec7ecc87e9de6969a5fddb1c10558150c3b2d6647b18e6b3e67e2b92b71986f3d27dd135f430b150c357447b6dc3eb94151f0f25051c895e12d04f965

Download Submit
C:\Users\Admin\winlogon.exe

Filesize
26KB

MD5
170841653a1dce31f784d13319210b50

SHA1
ee8b74a035fcba3cd3a2a5cb00f61179f604238d

SHA256
4420fef87deee22a1ebda98c39da4aaa061da8a6068d7ff433ea7d1634c2f8be

SHA512
f3a7ba7ec7ecc87e9de6969a5fddb1c10558150c3b2d6647b18e6b3e67e2b92b71986f3d27dd135f430b150c357447b6dc3eb94151f0f25051c895e12d04f965

Download Submit
memory/3352-134-0x0000000000000000-mapping.dmp

Download
memory/3408-139-0x0000000000000000-mapping.dmp

Download
memory/3408-140-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3408-142-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3408-143-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3408-146-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3408-147-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads