c9ea8373a75a85007944476fa261dee67a84ef4ffebe444d3491a8c504460229

Analysis

max time kernel
141s
max time network
161s
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 21:41

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-05-22_65ce7331d6d53b044878cf1a8d26a61b_cryptolocker.exe
Size

48KB
MD5

65ce7331d6d53b044878cf1a8d26a61b
SHA1

8879f0052e2091df6eb70448951dfb978f4e9211
SHA256

c9ea8373a75a85007944476fa261dee67a84ef4ffebe444d3491a8c504460229
SHA512

b4d759d5ad5824cc7d8f7f72d52bc5c07cb5fc0fe12bf8e0c993cb07c11780ff607a0a6474044ddee9bec05eb50c2f28c0fc95ecdb61b96905a6c82e7edfc013
SSDEEP

768:P6LsoVEeegiZPvEhHSP+gp/QtOOtEvwDpjBBMLZdzuqpXsiE8Wq/Dpkc9:P6Q0ElP6G+gJQMOtEvwDpjB8WMlf9

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

Processes:

resource	yara_rule
behavioral2/memory/1572-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
C:\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_rule2
behavioral2/memory/1308-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1572-25-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1308-27-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

Processes:

resource	yara_rule
behavioral2/memory/1572-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
C:\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_set1
behavioral2/memory/1308-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/memory/1572-25-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/memory/1308-27-0x0000000000500000-0x000000000050B000-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:

2024-05-22_65ce7331d6d53b044878cf1a8d26a61b_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_65ce7331d6d53b044878cf1a8d26a61b_cryptolocker.exe

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

1308 asih.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
1308	asih.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-05-22_65ce7331d6d53b044878cf1a8d26a61b_cryptolocker.exe

description	pid	process	target process
PID 1572 wrote to memory of 1308	1572	2024-05-22_65ce7331d6d53b044878cf1a8d26a61b_cryptolocker.exe	asih.exe
PID 1572 wrote to memory of 1308	1572	2024-05-22_65ce7331d6d53b044878cf1a8d26a61b_cryptolocker.exe	asih.exe
PID 1572 wrote to memory of 1308	1572	2024-05-22_65ce7331d6d53b044878cf1a8d26a61b_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-22_65ce7331d6d53b044878cf1a8d26a61b_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-22_65ce7331d6d53b044878cf1a8d26a61b_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1572

C:\Users\Admin\AppData\Local\Temp\asih.exe
"C:\Users\Admin\AppData\Local\Temp\asih.exe"
2⤵
- Executes dropped EXE
PID:1308

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=3816 --field-trial-handle=2248,i,10247514684337323751,15511974759131734137,262144 --variations-seed-version /prefetch:8
1⤵
PID:2596

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\asih.exe

Filesize
48KB

MD5
a8b36baa41a41fbcc830a8653a52a23f

SHA1
bb808ed6e92c90a83502aee88171c61f898bdf58

SHA256
b19d5cbb1494021809dc86601eb07d540612801cc20746bf1bdf80e387c1ad5e

SHA512
e4472d23466a797495a4c7db624b90beb9ab98728b5d9b856a9dd47b7a8ba5a6736196b166c3502b536fa77a11fc970c249e2dcb133ee376bac80472ac1af293

Download Submit
memory/1308-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/1308-19-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/1308-26-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/1308-27-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/1572-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/1572-1-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download
memory/1572-2-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download
memory/1572-3-0x0000000000540000-0x0000000000546000-memory.dmp

Filesize
24KB

Download
memory/1572-25-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download