a33c57148f3dc47e6c429aa48df1b5f7ad16451fd8391182a70536f8c2e36611

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
09/05/2024, 03:39

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General

Target

2024-05-09_6ac01eb4450f43edd5a2b70b89b6294a_cryptolocker.exe
Size

46KB
MD5

6ac01eb4450f43edd5a2b70b89b6294a
SHA1

1d6fc5aa54e16aefd46f05b3dc4fdd918caeb1d2
SHA256

a33c57148f3dc47e6c429aa48df1b5f7ad16451fd8391182a70536f8c2e36611
SHA512

7e144109e92124abeb479d1ecc644273051a9f5fc98587221ff3e9d6f9dacef2dfded337ec73678fa62349784b6e439695fafc31ac87b996d0df0c6fa6ccbb88
SSDEEP

768:qmOKYQDf5XdrDmjr5tOOtEvwDpjAajFEitQbDmoSQCVUBJUkQqAHBIG05W2MoLT:qmbhXDmjr5MOtEvwDpj5cDtKkQZQp

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/4724-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000700000002328e-13.dat	CryptoLocker_rule2
behavioral2/memory/4724-19-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/840-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/840-28-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral2/memory/4724-19-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/840-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/840-28-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral2/memory/4724-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/files/0x000700000002328e-13.dat	UPX
behavioral2/memory/4724-19-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/840-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/840-28-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

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-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation	2024-05-09_6ac01eb4450f43edd5a2b70b89b6294a_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
840	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 4724 wrote to memory of 840	4724	2024-05-09_6ac01eb4450f43edd5a2b70b89b6294a_cryptolocker.exe	81
PID 4724 wrote to memory of 840	4724	2024-05-09_6ac01eb4450f43edd5a2b70b89b6294a_cryptolocker.exe	81
PID 4724 wrote to memory of 840	4724	2024-05-09_6ac01eb4450f43edd5a2b70b89b6294a_cryptolocker.exe	81

C:\Users\Admin\AppData\Local\Temp\2024-05-09_6ac01eb4450f43edd5a2b70b89b6294a_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-09_6ac01eb4450f43edd5a2b70b89b6294a_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4724
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:840

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
46KB

MD5
4466017dd0cb3615984b16fb500d517f

SHA1
1c5ba884a1905b970e9213c449c0f911af07acda

SHA256
e364ed8ca43eb9b8cc5d1f413e5a71d985df1e5d794f6249eab9d64551944541

SHA512
6f799c3eeff64f1846d190db3acf5bcfa9d0e2521505188f05b7e58869a9c07aafaac588d757b7fae0d81245ee78a64d28f92283fda9a578c0ccc1407428d9f1

Download Submit
memory/840-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/840-27-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/840-21-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/840-28-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4724-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4724-1-0x0000000000630000-0x0000000000636000-memory.dmp

Filesize
24KB

Download
memory/4724-2-0x0000000000650000-0x0000000000656000-memory.dmp

Filesize
24KB

Download
memory/4724-9-0x0000000000630000-0x0000000000636000-memory.dmp

Filesize
24KB

Download
memory/4724-19-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download