bda6fdd48b8bebea80527c0c476acd37fad734df8956ef0820262c1c241414a7

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
22-05-2024 02:51

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General

Target

2024-05-22_de90bf6881e363bd2a7c1d2fe5470029_cryptolocker.exe
Size

38KB
MD5

de90bf6881e363bd2a7c1d2fe5470029
SHA1

ce4dc15d613a4e3699623b1ae1b05e7f923d0b39
SHA256

bda6fdd48b8bebea80527c0c476acd37fad734df8956ef0820262c1c241414a7
SHA512

8486250aea3c65bd08a64df1a08316e30e14fa29251f7038e6ffce009204aa9ff8166a60a36ce11c2a0f1934f6ac8d9ced893da168457678f3727a6dc5b4ecca
SSDEEP

384:btBYQg/WIEhUCSNyepEjYnDOAlzVol6U/zzo+tkq4XDIwNiJXxXunRSy3H:btB9g/WItCSsAGjX7e9N0hunRvX

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\gewos.exe	CryptoLocker_rule2

Checks computer location settings 2 TTPs 2 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

Processes:

2024-05-22_de90bf6881e363bd2a7c1d2fe5470029_cryptolocker.exegewos.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2539840389-1261165778-1087677076-1000\Control Panel\International\Geo\Nation	2024-05-22_de90bf6881e363bd2a7c1d2fe5470029_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2539840389-1261165778-1087677076-1000\Control Panel\International\Geo\Nation	gewos.exe

Executes dropped EXE 1 IoCs

Processes:

gewos.exe

pid process

4780 gewos.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
4780	gewos.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-05-22_de90bf6881e363bd2a7c1d2fe5470029_cryptolocker.exe

description	pid	process	target process
PID 4648 wrote to memory of 4780	4648	2024-05-22_de90bf6881e363bd2a7c1d2fe5470029_cryptolocker.exe	gewos.exe
PID 4648 wrote to memory of 4780	4648	2024-05-22_de90bf6881e363bd2a7c1d2fe5470029_cryptolocker.exe	gewos.exe
PID 4648 wrote to memory of 4780	4648	2024-05-22_de90bf6881e363bd2a7c1d2fe5470029_cryptolocker.exe	gewos.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-22_de90bf6881e363bd2a7c1d2fe5470029_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-22_de90bf6881e363bd2a7c1d2fe5470029_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4648

C:\Users\Admin\AppData\Local\Temp\gewos.exe
"C:\Users\Admin\AppData\Local\Temp\gewos.exe"
2⤵
- Checks computer location settings
- Executes dropped EXE
PID:4780

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\gewos.exe
Filesize
38KB

MD5
43f32ea71fa5da3645633543485cb223

SHA1
ab28423db1f90ef7127cc816189b45ed3998f919

SHA256
ef45a1c6d039ed95471893329ce597113351ee52d2bbcd2325d9c5721bc98b59

SHA512
ce2b1ffe22f53ce9b60322438fdfc33a5bf963f6421e3d7308fb11955ed6e30946efc48bac86fe3f2f85295b35dc2c807c2ff547af4a9c9e57f1ed248bfc2087

Download Submit
C:\Users\Admin\AppData\Local\Temp\gewosik.exe
Filesize
185B

MD5
76b5658b1ec68ba6e7e8ed87615040f0

SHA1
10cecf1fa34be158ec8872ef42a8d10fb9659956

SHA256
81ae8ab00cac2d1a1a1f8563a6f55dd27a61dde081726fb319fd2cba5f038e91

SHA512
f101e90d2cd4de3462aaaa595aeaf7c5a1d24de241dc45668f65347df7eb462ef017ca1947ef8daa7dfdee82abf27717ce9cba3e113425996e397d141647260d

Download Submit
memory/4648-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/4648-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4648-8-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download