f965e9f301beae2341256056acd6ed4661a9e780031724c1bd37ff4a5cd41ef5

Analysis

max time kernel
143s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
07/06/2024, 11:31

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General

Target

2024-06-07_58f05e8a40cd17087019d9678bfb2d58_cryptolocker.exe
Size

77KB
MD5

58f05e8a40cd17087019d9678bfb2d58
SHA1

95b79823935de6cd96e74d9e72be69df8306bc70
SHA256

f965e9f301beae2341256056acd6ed4661a9e780031724c1bd37ff4a5cd41ef5
SHA512

4d5f001e35c4b2c54683984011206860fbc2f53e42476c59e15717bce29fe9894ba3fb02c3be70aa4d17a4b3413ceb8715312a2da85643a9c9bf34b656451e16
SSDEEP

1536:X6QFElP6n+gJQMOtEvwDpjBZYTjipvF2bx1sie2:X6a+SOtEvwDpjBZYvQd2d

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000800000002326a-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000800000002326a-12.dat	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	2024-06-07_58f05e8a40cd17087019d9678bfb2d58_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4204	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 4616 wrote to memory of 4204	4616	2024-06-07_58f05e8a40cd17087019d9678bfb2d58_cryptolocker.exe	91
PID 4616 wrote to memory of 4204	4616	2024-06-07_58f05e8a40cd17087019d9678bfb2d58_cryptolocker.exe	91
PID 4616 wrote to memory of 4204	4616	2024-06-07_58f05e8a40cd17087019d9678bfb2d58_cryptolocker.exe	91

C:\Users\Admin\AppData\Local\Temp\2024-06-07_58f05e8a40cd17087019d9678bfb2d58_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-07_58f05e8a40cd17087019d9678bfb2d58_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4616
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4204

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=4340 --field-trial-handle=2252,i,16022092570067181109,3235558581947505669,262144 --variations-seed-version /prefetch:8
1⤵
PID:4692

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
77KB

MD5
265e00feb50cb1142190a8c3ca0cda42

SHA1
1bc06b5e94b73099c3043086bfb001d4ad57b6b9

SHA256
20b88ca8de7a013951c5649da9f3393e9b65f4f74c05f4664da5ad777669e48e

SHA512
63b6faffc80e049e1f3e93bca53a5c0411f7304bd011a3593c0ed340374d20707d2637449c6e3bebab9f3d48936ffff34adc60bb85cdd53fbde00d3c4236f2c5

Download Submit
memory/4204-17-0x0000000000650000-0x0000000000656000-memory.dmp

Filesize
24KB

Download
memory/4204-23-0x0000000000620000-0x0000000000626000-memory.dmp

Filesize
24KB

Download
memory/4616-0-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/4616-1-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/4616-2-0x0000000000600000-0x0000000000606000-memory.dmp

Filesize
24KB

Download