a95462c4f48d8da6a0449b91a227beb13811b7f00dedaf64176da8e4723b1afb

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
19/01/2024, 10:18

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General

Target

2024-01-19_d1e205dd09e1e55b492b503a801a2ff1_cryptolocker.exe
Size

47KB
MD5

d1e205dd09e1e55b492b503a801a2ff1
SHA1

cc71af238b0ba2a33969ab67f2fd4ab93ad635f7
SHA256

a95462c4f48d8da6a0449b91a227beb13811b7f00dedaf64176da8e4723b1afb
SHA512

a839706d75645657e54e41e240b09b93302f236fc4a12513fd7156e8fd9ad55e9180883d96e1aca472012fa2774108b0f9438090b9a091c71727c76a46394cd5
SSDEEP

768:79inqyNR/QtOOtEvwDpjBK/rJ+Nw8qnT9:79mqyNhQMOtEvwDpjBxe8S

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 3 IoCs

resource	yara_rule
behavioral2/memory/4736-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000c00000002314f-13.dat	CryptoLocker_rule2
behavioral2/memory/4736-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral2/memory/4736-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000c00000002314f-13.dat	CryptoLocker_set1
behavioral2/memory/4736-17-0x0000000000500000-0x000000000050F000-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-1-5-21-1497073144-2389943819-3385106915-1000\Control Panel\International\Geo\Nation	2024-01-19_d1e205dd09e1e55b492b503a801a2ff1_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
784	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 4736 wrote to memory of 784	4736	2024-01-19_d1e205dd09e1e55b492b503a801a2ff1_cryptolocker.exe	87
PID 4736 wrote to memory of 784	4736	2024-01-19_d1e205dd09e1e55b492b503a801a2ff1_cryptolocker.exe	87
PID 4736 wrote to memory of 784	4736	2024-01-19_d1e205dd09e1e55b492b503a801a2ff1_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-01-19_d1e205dd09e1e55b492b503a801a2ff1_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-19_d1e205dd09e1e55b492b503a801a2ff1_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4736
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:784

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
47KB

MD5
214a8d2982ff8ba9f7ed8e21426e7d15

SHA1
ccd702eb1f3cc57f40af90e0d4c727d6fd341935

SHA256
7ea3a86929b42974e879304dece2a31ec43e5a0dc1136183df1bb213aa40dbe3

SHA512
dfd785a727547b6104aff2bf76a87a251d2e1178b7d82e14a925e41d794da61a97b3c96ed7438af7f43b77a4121da641e0f1624a72ef74db7038277dff1c74a6

Download Submit
memory/784-19-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/784-25-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/4736-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/4736-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/4736-2-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/4736-3-0x0000000002080000-0x0000000002086000-memory.dmp

Filesize
24KB

Download
memory/4736-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download