18add9d382cddb90ad8f54d3961c7a447c1665d871044140439fa6feb62098dc

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
23-05-2024 18:16

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General

Target

2024-05-23_a7893ed768a7f19f25a7170e4c65ba00_cryptolocker.exe
Size

48KB
MD5

a7893ed768a7f19f25a7170e4c65ba00
SHA1

f278860408c42d17a1f05511c9beaaea48928a46
SHA256

18add9d382cddb90ad8f54d3961c7a447c1665d871044140439fa6feb62098dc
SHA512

919cdce3d179b9e4801a176779e2e9ab30ca23c0d9de63d00c5383333c707fba604163c9c7b951073705c7484675b43912eca7f70e1481871305af00daf03eb4
SSDEEP

768:79inqyNR/QtOOtEvwDpjBKccJVODvy3SpUl0n:79mqyNhQMOtEvwDpjBzckqShn

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

Processes:

resource	yara_rule
behavioral2/memory/3428-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
C:\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_rule2
behavioral2/memory/3428-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/916-18-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

Processes:

resource	yara_rule
behavioral2/memory/3428-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
C:\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_set1
behavioral2/memory/3428-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/916-18-0x0000000000500000-0x000000000050F000-memory.dmp	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:

2024-05-23_a7893ed768a7f19f25a7170e4c65ba00_cryptolocker.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\Control Panel\International\Geo\Nation	2024-05-23_a7893ed768a7f19f25a7170e4c65ba00_cryptolocker.exe

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

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

System Information Discovery
T1082

pid	process
916	asih.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-05-23_a7893ed768a7f19f25a7170e4c65ba00_cryptolocker.exe

description	pid	process	target process
PID 3428 wrote to memory of 916	3428	2024-05-23_a7893ed768a7f19f25a7170e4c65ba00_cryptolocker.exe	asih.exe
PID 3428 wrote to memory of 916	3428	2024-05-23_a7893ed768a7f19f25a7170e4c65ba00_cryptolocker.exe	asih.exe
PID 3428 wrote to memory of 916	3428	2024-05-23_a7893ed768a7f19f25a7170e4c65ba00_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-23_a7893ed768a7f19f25a7170e4c65ba00_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-23_a7893ed768a7f19f25a7170e4c65ba00_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3428

C:\Users\Admin\AppData\Local\Temp\asih.exe
"C:\Users\Admin\AppData\Local\Temp\asih.exe"
2⤵
- Executes dropped EXE
PID:916

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 --field-trial-handle=4088,i,11266875042087428226,16669718873272757238,262144 --variations-seed-version --mojo-platform-channel-handle=1280 /prefetch:8
1⤵
PID:4464

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\asih.exe
Filesize
48KB

MD5
9483276e233d2e6159d52f6baf0fac56

SHA1
8ce45a04b55aa82a1e9c5ce1da12584dddf1cc57

SHA256
63e9f3e4cea2d4ea43838a62ecbb678789d368ec53004d3cc9acb0234bc431db

SHA512
f6f4febfd34459c2fc9ba09168f23380b984958cf1d90f802c5b9101e17689276da0b5c8111f8eee89bd38c0aeb8e6460de404f50c1a3bbe7c54cb815f08cd9b

Download Submit
memory/916-18-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/916-26-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/3428-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3428-1-0x0000000000560000-0x0000000000566000-memory.dmp

Filesize
24KB

Download
memory/3428-2-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/3428-9-0x0000000000560000-0x0000000000566000-memory.dmp

Filesize
24KB

Download
memory/3428-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download