f6c6698a6c3691aca395cae9d790e33adff7278e5c2b343116917c765d190806

Analysis

max time kernel
150s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
29/01/2024, 00:31

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General

Target

2024-01-29_ace4e9debd2308259b2cb7a1b5644357_cryptolocker.exe
Size

71KB
MD5

ace4e9debd2308259b2cb7a1b5644357
SHA1

00aaf178eba499c4cd6cbb6066eae609ea385895
SHA256

f6c6698a6c3691aca395cae9d790e33adff7278e5c2b343116917c765d190806
SHA512

928a34731551d1005c8737553b970f035c8d36db6a102d5a2d71d56934dd7cc8bc74d2a274eba2f8c0d6deed4baf60315405875b9e6f06de8b42a3b135f29120
SSDEEP

1536:X6QFElP6n+gJQMOtEvwDpjBZYTjipvF2bx1bZ:X6a+SOtEvwDpjBZYvQd2l

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00070000000231ff-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x00070000000231ff-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-1-5-21-996941297-2279405024-2328152752-1000\Control Panel\International\Geo\Nation	2024-01-29_ace4e9debd2308259b2cb7a1b5644357_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4564	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 1900 wrote to memory of 4564	1900	2024-01-29_ace4e9debd2308259b2cb7a1b5644357_cryptolocker.exe	84
PID 1900 wrote to memory of 4564	1900	2024-01-29_ace4e9debd2308259b2cb7a1b5644357_cryptolocker.exe	84
PID 1900 wrote to memory of 4564	1900	2024-01-29_ace4e9debd2308259b2cb7a1b5644357_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-01-29_ace4e9debd2308259b2cb7a1b5644357_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-29_ace4e9debd2308259b2cb7a1b5644357_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1900
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4564

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
71KB

MD5
f4739aa8c93e2365a5e5c0bf96c98fcd

SHA1
08d632d51f1e105cee7899c3e0db24e7f0fd1533

SHA256
d1f4cd9d27084b93301ef0956cc3d3c3e85222b02a2d3eb0dc5dd48165b96f46

SHA512
b8a7844539c9d769ffb04929e00c2cc7b6680db9fb885907ed3bb84d47d0cb9508780825d2f02bf1f8ae53443d010181a0ee5dfc210cadfa2e081466a4460352

Download Submit
memory/1900-0-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download
memory/1900-2-0x0000000002230000-0x0000000002236000-memory.dmp

Filesize
24KB

Download
memory/1900-1-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download
memory/4564-17-0x0000000000850000-0x0000000000856000-memory.dmp

Filesize
24KB

Download
memory/4564-21-0x0000000000830000-0x0000000000836000-memory.dmp

Filesize
24KB

Download