c61721a5d9855c58be0756d6fd0b2e6b033b9c4ccd92b9ce8b275c792722e426

Analysis

max time kernel
142s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
22-05-2024 02:40

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General

Target

2024-05-22_91a949ca1ce9bfc5e81464ecb5efbf55_cryptolocker.exe
Size

46KB
MD5

91a949ca1ce9bfc5e81464ecb5efbf55
SHA1

8ca7a43f9784c3a71ae5bdb26a886f69e1047901
SHA256

c61721a5d9855c58be0756d6fd0b2e6b033b9c4ccd92b9ce8b275c792722e426
SHA512

c0fa14a7f57a56e24da0f7d1a162aa1e14dfd6a83c95a597a881caf786a0c251b95e72574a1f4b124174bcf3493727c4e06786d6d581556063572f30cb4b8aeb
SSDEEP

768:V6LsoEEeegiZPvEhHSG+gDYQtOOtEvwDpj/MLam5aFr7YOzzfm0EXsJmZ3:V6QFElP6n+gMQMOtEvwDpjyaYaFAh3B5

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

Processes:

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

Detection of Cryptolocker Samples 1 IoCs

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_set1

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:

2024-05-22_91a949ca1ce9bfc5e81464ecb5efbf55_cryptolocker.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	2024-05-22_91a949ca1ce9bfc5e81464ecb5efbf55_cryptolocker.exe

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

3280 asih.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
3280	asih.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-05-22_91a949ca1ce9bfc5e81464ecb5efbf55_cryptolocker.exe

description	pid	process	target process
PID 4744 wrote to memory of 3280	4744	2024-05-22_91a949ca1ce9bfc5e81464ecb5efbf55_cryptolocker.exe	asih.exe
PID 4744 wrote to memory of 3280	4744	2024-05-22_91a949ca1ce9bfc5e81464ecb5efbf55_cryptolocker.exe	asih.exe
PID 4744 wrote to memory of 3280	4744	2024-05-22_91a949ca1ce9bfc5e81464ecb5efbf55_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-22_91a949ca1ce9bfc5e81464ecb5efbf55_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-22_91a949ca1ce9bfc5e81464ecb5efbf55_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4744

C:\Users\Admin\AppData\Local\Temp\asih.exe
"C:\Users\Admin\AppData\Local\Temp\asih.exe"
2⤵
- Executes dropped EXE
PID:3280

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=4192 --field-trial-handle=2276,i,5697607538120380977,9987005253899555344,262144 --variations-seed-version /prefetch:8
1⤵
PID:2404

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\asih.exe

Filesize
46KB

MD5
36ac6b5190d6da1d5d47bd427e6963ac

SHA1
6d721091368135a8abed07a197e7f8ec516064d2

SHA256
a8c4fe7ab98d5314050b5103d92dd6daf2dc380988c7877ded17671ce8dc6353

SHA512
188ed412f22b74c6fc14cbad6601aaaec993f44d2aebe44b7da7647cbef7c5a4841101e22f668ecadc8b4bcc72ec730a83517304e1cfe9a9793981d6c2225e9c

Download Submit
memory/3280-17-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/3280-23-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/4744-0-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/4744-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/4744-2-0x0000000000850000-0x0000000000856000-memory.dmp

Filesize
24KB

Download