e4e7cef0b0ee110aefa479693d582a0e8736dd3cd1b1f7441a08bf0ad631daf7

Analysis

max time kernel
114s
max time network
137s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
31/05/2024, 06:32

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General

Target

2024-05-31_5b6e235617031ec91033a00df7cab708_cryptolocker.exe
Size

36KB
MD5

5b6e235617031ec91033a00df7cab708
SHA1

6004478f3e2c9c672893a232d6ce01ab59e76000
SHA256

e4e7cef0b0ee110aefa479693d582a0e8736dd3cd1b1f7441a08bf0ad631daf7
SHA512

02318cfecceed82eaed6ce69d1c97aaf1da18d5b22cf5bbf320a90fb6bc3c2367b2d4ffb4196e103c3f73a9b6ca6bb063906a2c76191147b95797fc1d451ba71
SSDEEP

384:btBYQg/WIEhUCSNyepEjYnDOAlzVol6U/zzo+tkq4l8tFFxE2B0qZvvOw:btB9g/WItCSsAGjX7r3BTZvvOw

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023245-12.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-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	2024-05-31_5b6e235617031ec91033a00df7cab708_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	gewos.exe

Executes dropped EXE 1 IoCs

pid	Process
2628	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 4068 wrote to memory of 2628	4068	2024-05-31_5b6e235617031ec91033a00df7cab708_cryptolocker.exe	90
PID 4068 wrote to memory of 2628	4068	2024-05-31_5b6e235617031ec91033a00df7cab708_cryptolocker.exe	90
PID 4068 wrote to memory of 2628	4068	2024-05-31_5b6e235617031ec91033a00df7cab708_cryptolocker.exe	90

C:\Users\Admin\AppData\Local\Temp\2024-05-31_5b6e235617031ec91033a00df7cab708_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-31_5b6e235617031ec91033a00df7cab708_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4068
- 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:2628

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=2268 --field-trial-handle=2244,i,11878111470816612087,2265290141962607370,262144 --variations-seed-version /prefetch:8
1⤵
PID:496

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

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Downloads

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

Filesize
36KB

MD5
81adc6de441fe6478427f0fd334a6432

SHA1
d054051368dc9dd538438219f361190c6958a1cd

SHA256
d7c75f54575102bedc23de256fd9efc55f65978a2723d7585db346609174e636

SHA512
fa9a2be45b741fd7a3a0120f5fa734ecb2df02afd1227b95a00da6bcb3591c175f0407aeac6f2b427bb8980342aefae57bcd3112eba2941d341fdd51171177ea

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

Filesize
185B

MD5
b57d009e105c9c45b354209657ce2e5e

SHA1
3a0a080b71b399b6ca6d9ecbc11a6f406951f342

SHA256
a072b8d6de8f08ab323d28a590e0710cc9707bc855b0e23c0705f4e7e69c1785

SHA512
9d00e58303b378b679e622ec32a4294cd182e0fe33765ded6642f2291bd46aa84630b90ebf64ad992a5fdee48dcd2b1cbca5b0c72401041cbdd4a3aabf6ff6ae

Download Submit
memory/2628-25-0x0000000002180000-0x0000000002186000-memory.dmp

Filesize
24KB

Download
memory/4068-0-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/4068-1-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/4068-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download