6bb01522743924f7b11a5592a4938945eaa3201625e1255bd6f01cefceeabc31

Analysis

max time kernel
145s
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
10/06/2024, 11:49

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-06-10_f191ad552423b6cb66793ff22dd37bef_cryptolocker.exe
Size

47KB
MD5

f191ad552423b6cb66793ff22dd37bef
SHA1

ecf6aa74d33dc507a5d347e246268dffd11b0e6f
SHA256

6bb01522743924f7b11a5592a4938945eaa3201625e1255bd6f01cefceeabc31
SHA512

497b19d498706042dba396db7b0b901351a73e62fe3533ba89f235a724eee04070e69b74fb57c1311502769afd94d436800e6da574e25d2b607b55e51edcce0f
SSDEEP

768:79inqyNR/QtOOtEvwDpjBKccJVODvy3SpUv:79mqyNhQMOtEvwDpjBzckqS+

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 3 IoCs

resource	yara_rule
behavioral2/memory/536-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000800000002324a-13.dat	CryptoLocker_rule2
behavioral2/memory/536-25-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral2/memory/536-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000800000002324a-13.dat	CryptoLocker_set1
behavioral2/memory/536-25-0x0000000000500000-0x000000000050F000-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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	2024-06-10_f191ad552423b6cb66793ff22dd37bef_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1356	asih.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 536 wrote to memory of 1356	536	2024-06-10_f191ad552423b6cb66793ff22dd37bef_cryptolocker.exe	91
PID 536 wrote to memory of 1356	536	2024-06-10_f191ad552423b6cb66793ff22dd37bef_cryptolocker.exe	91
PID 536 wrote to memory of 1356	536	2024-06-10_f191ad552423b6cb66793ff22dd37bef_cryptolocker.exe	91

C:\Users\Admin\AppData\Local\Temp\2024-06-10_f191ad552423b6cb66793ff22dd37bef_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-10_f191ad552423b6cb66793ff22dd37bef_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:536
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1356

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=4136 --field-trial-handle=2744,i,16362475727591565961,3676688664819797550,262144 --variations-seed-version /prefetch:8
1⤵
PID:5012

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
47KB

MD5
02e81b68675d7b917eff805569960d31

SHA1
925abe87fd7546a3d28e598ce156dcd0c00922b1

SHA256
ce7bcc5be88aa7d535b8ed12c326e277f948d3a127caef7f306887122d76a7d4

SHA512
510cd9028abedf3c534fcfd119b75211cbef746cf8c11699dc81e1d2e8447b3fd1b5f3fda046361be32a41611aed65a0af1f9b9e07a94bc4f513154883d9f0d4

Download Submit
memory/536-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/536-1-0x0000000002190000-0x0000000002196000-memory.dmp

Filesize
24KB

Download
memory/536-2-0x0000000002190000-0x0000000002196000-memory.dmp

Filesize
24KB

Download
memory/536-3-0x00000000021B0000-0x00000000021B6000-memory.dmp

Filesize
24KB

Download
memory/536-25-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1356-18-0x0000000000730000-0x0000000000736000-memory.dmp

Filesize
24KB

Download
memory/1356-19-0x00000000020F0000-0x00000000020F6000-memory.dmp

Filesize
24KB

Download