c27209e407c7ec6bba16a783144e8eee3141a3923008c5b6d755557f06db58f2

Analysis

max time kernel
149s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
27/02/2024, 15:41

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-02-27_f0727409e527e8800452839719cf70e5_cryptolocker.exe
Size

36KB
MD5

f0727409e527e8800452839719cf70e5
SHA1

ea558b73844706a7832c96757e4f5c640f7c150c
SHA256

c27209e407c7ec6bba16a783144e8eee3141a3923008c5b6d755557f06db58f2
SHA512

1e97d5388e48b92deb072378952dac2cfa00d8a23608b6f6f1ed2a88a3c549d192bc708d94c9b8330f1cd862011dc432276e720eb72c8ca2adb5faa824cca5b3
SSDEEP

384:btBYQg/WIEhUCSNyepEjYnDOAlzVol6U/zzo+tkq4XDIwNiJXxXunUgVg:btB9g/WItCSsAGjX7e9N0hunUWg

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000300000001e9a0-12.dat	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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-275798769-4264537674-1142822080-1000\Control Panel\International\Geo\Nation	gewos.exe
Key value queried	\REGISTRY\USER\S-1-5-21-275798769-4264537674-1142822080-1000\Control Panel\International\Geo\Nation	2024-02-27_f0727409e527e8800452839719cf70e5_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2916	gewos.exe

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

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4664 wrote to memory of 2916	4664	2024-02-27_f0727409e527e8800452839719cf70e5_cryptolocker.exe	88
PID 4664 wrote to memory of 2916	4664	2024-02-27_f0727409e527e8800452839719cf70e5_cryptolocker.exe	88
PID 4664 wrote to memory of 2916	4664	2024-02-27_f0727409e527e8800452839719cf70e5_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-02-27_f0727409e527e8800452839719cf70e5_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-27_f0727409e527e8800452839719cf70e5_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4664
- 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:2916

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\gewos.exe

Filesize
37KB

MD5
15f76d7e1c6acce2905f07ecc6e12ad7

SHA1
23e24739f5e9be26b4a031fc2dfe00d1673aa000

SHA256
24ae9fd09a28d063d86ecce61b7fc861de873c4c6c575f415e09872da0d26eed

SHA512
2b9246ec80c22d7f0419ad928336d4d938a6ca9cee7f74c290097335c3e496e704144affef9497d8544f03f007fa09d1ee57b5bde5c793b69df8efdd72c0fd01

Download Submit
memory/2916-25-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/4664-0-0x0000000002D60000-0x0000000002D66000-memory.dmp

Filesize
24KB

Download
memory/4664-1-0x0000000002D60000-0x0000000002D66000-memory.dmp

Filesize
24KB

Download
memory/4664-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download