33cd48b797a51192ac5578b67e534e6ca5effac76c685bc8d50082007eb2c920

Analysis

max time kernel
150s
max time network
147s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
22-05-2024 02:32

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General

Target

2024-05-22_5201163219dbaf4cafe1af292a4baffb_cryptolocker.exe
Size

33KB
MD5

5201163219dbaf4cafe1af292a4baffb
SHA1

4d94ef674860062731a01f042cd1b61df61af2b1
SHA256

33cd48b797a51192ac5578b67e534e6ca5effac76c685bc8d50082007eb2c920
SHA512

7bf5bb6f53db10bc2696551eea9490c3070d603af86c6c858936d6d7a5c3417e4b2924dbad373f3c0e32e607d56e0995ca7e9ca269fc149b1b3a21f4b181d377
SSDEEP

384:bG74uGLLQRcsdeQ72ngEr4K7YmE8j60nrlwfjDUGTGLZ92:bG74zYcgT/Ekd0ryfjgj2

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4360-0-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
C:\Users\Admin\AppData\Local\Temp\hasfj.exe	CryptoLocker_rule2
behavioral2/memory/4808-18-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4360-17-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4808-27-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2

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_5201163219dbaf4cafe1af292a4baffb_cryptolocker.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\Control Panel\International\Geo\Nation	2024-05-22_5201163219dbaf4cafe1af292a4baffb_cryptolocker.exe

Executes dropped EXE 1 IoCs

Processes:

hasfj.exe

pid process

4808 hasfj.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
4808	hasfj.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-05-22_5201163219dbaf4cafe1af292a4baffb_cryptolocker.exe

description	pid	process	target process
PID 4360 wrote to memory of 4808	4360	2024-05-22_5201163219dbaf4cafe1af292a4baffb_cryptolocker.exe	hasfj.exe
PID 4360 wrote to memory of 4808	4360	2024-05-22_5201163219dbaf4cafe1af292a4baffb_cryptolocker.exe	hasfj.exe
PID 4360 wrote to memory of 4808	4360	2024-05-22_5201163219dbaf4cafe1af292a4baffb_cryptolocker.exe	hasfj.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-22_5201163219dbaf4cafe1af292a4baffb_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-22_5201163219dbaf4cafe1af292a4baffb_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4360

C:\Users\Admin\AppData\Local\Temp\hasfj.exe
"C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
2⤵
- Executes dropped EXE
PID:4808

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=4084,i,9746875443948590908,1444894342962555245,262144 --variations-seed-version --mojo-platform-channel-handle=4352 /prefetch:8
1⤵
PID:2796

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\hasfj.exe
Filesize
33KB

MD5
377b288ac2c2f552d995ffff742ae28a

SHA1
194a82d78d8f47c2e49279b9ccee230de9e464eb

SHA256
16e0bf2af95105c2a2cbc39a43960b66307116b6ae61a03e809ac0ae19d3aee0

SHA512
f74d7b173c91e48d9fb4e37b19f0e9da417f2145239834e646476ee2b30bca7e17f337d7ae9c4be331aafa28586963587a87f8493b149b60134c54dcfb3d448b

Download Submit
memory/4360-0-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/4360-1-0x0000000002060000-0x0000000002066000-memory.dmp

Filesize
24KB

Download
memory/4360-2-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download
memory/4360-9-0x0000000002060000-0x0000000002066000-memory.dmp

Filesize
24KB

Download
memory/4360-17-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/4808-18-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/4808-20-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/4808-26-0x0000000002110000-0x0000000002116000-memory.dmp

Filesize
24KB

Download
memory/4808-27-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download