fc1e5d7b2b7da103fb4f3abb015908ac54e6d74f66fd5cfe1c929af0d15078a9

Analysis

max time kernel
39s
max time network
44s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
04-12-2022 09:56

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General

Target

fc1e5d7b2b7da103fb4f3abb015908ac54e6d74f66fd5cfe1c929af0d15078a9.exe
Size

440KB
MD5

03eb76f40d34072a0cd486b35faf2342
SHA1

8572eab9fe72714cc85bc92fac2f1df0beae1fd7
SHA256

fc1e5d7b2b7da103fb4f3abb015908ac54e6d74f66fd5cfe1c929af0d15078a9
SHA512

cd2eae7c1893ec1c39f4fc26d297a7159f3b589441635872e4ab53c079ea374db19cfcf3e4c98adfd43a82c261603d3b1e6488d03f1d036fbb091ce1fd77cb37
SSDEEP

6144:MVVlKTJpyILY44CG0dKItpCyYYzG/xc6YvwpJUgxK5VVP08Czu1rUM8i31h+42vH:clKTJptdhNI2308Uu1B1hgv5kps1

Score

8^/10

persistence

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1336	spolsv.exe

Loads dropped DLL 2 IoCs

pid	Process
1388	fc1e5d7b2b7da103fb4f3abb015908ac54e6d74f66fd5cfe1c929af0d15078a9.exe
1388	fc1e5d7b2b7da103fb4f3abb015908ac54e6d74f66fd5cfe1c929af0d15078a9.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run	fc1e5d7b2b7da103fb4f3abb015908ac54e6d74f66fd5cfe1c929af0d15078a9.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\Microsoft = "C:\\WINDOWS\\system\\spolsv.exe"	fc1e5d7b2b7da103fb4f3abb015908ac54e6d74f66fd5cfe1c929af0d15078a9.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\WINDOWS\system\spolsv.exe	fc1e5d7b2b7da103fb4f3abb015908ac54e6d74f66fd5cfe1c929af0d15078a9.exe
File created	C:\WINDOWS\system\spolsv.exe	fc1e5d7b2b7da103fb4f3abb015908ac54e6d74f66fd5cfe1c929af0d15078a9.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1388	fc1e5d7b2b7da103fb4f3abb015908ac54e6d74f66fd5cfe1c929af0d15078a9.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
1388	fc1e5d7b2b7da103fb4f3abb015908ac54e6d74f66fd5cfe1c929af0d15078a9.exe
1388	fc1e5d7b2b7da103fb4f3abb015908ac54e6d74f66fd5cfe1c929af0d15078a9.exe
1336	spolsv.exe
1336	spolsv.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1388 wrote to memory of 1336	1388	fc1e5d7b2b7da103fb4f3abb015908ac54e6d74f66fd5cfe1c929af0d15078a9.exe	26
PID 1388 wrote to memory of 1336	1388	fc1e5d7b2b7da103fb4f3abb015908ac54e6d74f66fd5cfe1c929af0d15078a9.exe	26
PID 1388 wrote to memory of 1336	1388	fc1e5d7b2b7da103fb4f3abb015908ac54e6d74f66fd5cfe1c929af0d15078a9.exe	26
PID 1388 wrote to memory of 1336	1388	fc1e5d7b2b7da103fb4f3abb015908ac54e6d74f66fd5cfe1c929af0d15078a9.exe	26

C:\Users\Admin\AppData\Local\Temp\fc1e5d7b2b7da103fb4f3abb015908ac54e6d74f66fd5cfe1c929af0d15078a9.exe
"C:\Users\Admin\AppData\Local\Temp\fc1e5d7b2b7da103fb4f3abb015908ac54e6d74f66fd5cfe1c929af0d15078a9.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1388
- C:\Windows\system\spolsv.exe
  "C:\Windows\system\spolsv.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetWindowsHookEx
  PID:1336

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:\Windows\system\spolsv.exe

Filesize
440KB

MD5
03eb76f40d34072a0cd486b35faf2342

SHA1
8572eab9fe72714cc85bc92fac2f1df0beae1fd7

SHA256
fc1e5d7b2b7da103fb4f3abb015908ac54e6d74f66fd5cfe1c929af0d15078a9

SHA512
cd2eae7c1893ec1c39f4fc26d297a7159f3b589441635872e4ab53c079ea374db19cfcf3e4c98adfd43a82c261603d3b1e6488d03f1d036fbb091ce1fd77cb37

Download Submit
\Windows\system\spolsv.exe

Filesize
440KB

MD5
03eb76f40d34072a0cd486b35faf2342

SHA1
8572eab9fe72714cc85bc92fac2f1df0beae1fd7

SHA256
fc1e5d7b2b7da103fb4f3abb015908ac54e6d74f66fd5cfe1c929af0d15078a9

SHA512
cd2eae7c1893ec1c39f4fc26d297a7159f3b589441635872e4ab53c079ea374db19cfcf3e4c98adfd43a82c261603d3b1e6488d03f1d036fbb091ce1fd77cb37

Download Submit
\Windows\system\spolsv.exe

Filesize
440KB

MD5
03eb76f40d34072a0cd486b35faf2342

SHA1
8572eab9fe72714cc85bc92fac2f1df0beae1fd7

SHA256
fc1e5d7b2b7da103fb4f3abb015908ac54e6d74f66fd5cfe1c929af0d15078a9

SHA512
cd2eae7c1893ec1c39f4fc26d297a7159f3b589441635872e4ab53c079ea374db19cfcf3e4c98adfd43a82c261603d3b1e6488d03f1d036fbb091ce1fd77cb37

Download Submit
memory/1388-54-0x00000000768A1000-0x00000000768A3000-memory.dmp

Filesize
8KB

Download