249263186d9132ef1708aff564ec7d28ca17aad099555f12a8b427e2265381dd

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
29/03/2024, 00:46

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-03-29_c8392fd7f9747048b775e029fc651255_cryptolocker.exe
Size

45KB
MD5

c8392fd7f9747048b775e029fc651255
SHA1

e3181adab7fa58f9b7878b5545585948db6bad88
SHA256

249263186d9132ef1708aff564ec7d28ca17aad099555f12a8b427e2265381dd
SHA512

6bda3a5d28795ca60778fa53900fef5b65e53228bbab76943a76631bd4ad786b7068523fc792603b741002205f6f81d1ff9dd9b45499217cc877b97e128f2058
SSDEEP

768:79inqyNR/QtOOtEvwDpjBKccJVODvyLUVmV4:79mqyNhQMOtEvwDpjBzckp3

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 3 IoCs

resource	yara_rule
behavioral2/memory/1444-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x00090000000224f7-13.dat	CryptoLocker_rule2
behavioral2/memory/1444-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral2/memory/1444-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x00090000000224f7-13.dat	CryptoLocker_set1
behavioral2/memory/1444-17-0x0000000000500000-0x000000000050F000-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-1-5-21-275798769-4264537674-1142822080-1000\Control Panel\International\Geo\Nation	2024-03-29_c8392fd7f9747048b775e029fc651255_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2084	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 1444 wrote to memory of 2084	1444	2024-03-29_c8392fd7f9747048b775e029fc651255_cryptolocker.exe	88
PID 1444 wrote to memory of 2084	1444	2024-03-29_c8392fd7f9747048b775e029fc651255_cryptolocker.exe	88
PID 1444 wrote to memory of 2084	1444	2024-03-29_c8392fd7f9747048b775e029fc651255_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-03-29_c8392fd7f9747048b775e029fc651255_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-29_c8392fd7f9747048b775e029fc651255_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1444
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2084

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
45KB

MD5
5cefdae41641d115c403eb210f319b3b

SHA1
38baf0806c2529ac1febe4478d2069e68d79e9c1

SHA256
7fc703e6cf76c7719db902a6e751ddff51d38800d211c44c0cb425a59321aa7c

SHA512
e5b04cac045f0a9aa78f771a7b7f2d08f46d3c75a24d494e967c39a80f0fe46032867d9caf3a2e460cc7ae1e76de3e0fa4a1e5079f653c084619ac70085f66a3

Download Submit
memory/1444-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1444-1-0x0000000002280000-0x0000000002286000-memory.dmp

Filesize
24KB

Download
memory/1444-2-0x0000000002280000-0x0000000002286000-memory.dmp

Filesize
24KB

Download
memory/1444-3-0x00000000021A0000-0x00000000021A6000-memory.dmp

Filesize
24KB

Download
memory/1444-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2084-19-0x0000000000750000-0x0000000000756000-memory.dmp

Filesize
24KB

Download
memory/2084-21-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download