ddf178c4604d051fe1f3a4d408086e904a97a822c13efcfb18ab309dd2944182

Analysis

max time kernel
149s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
23-05-2024 02:23

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General

Target

2024-05-23_10baee29ba1d8fc1a85b8e2a1ca5a97d_cryptolocker.exe
Size

45KB
MD5

10baee29ba1d8fc1a85b8e2a1ca5a97d
SHA1

e835581d0ab73e68003629e898e7373e35520134
SHA256

ddf178c4604d051fe1f3a4d408086e904a97a822c13efcfb18ab309dd2944182
SHA512

93c4a4308c8d1c5635e77253a6d614f42532017d88f3d6e648208f9d0ea3ae856517129f80535c91d8f97a3c92bca240bfc9152bb17c044e82c20ff947f23308
SSDEEP

768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGpebVIYLHA3Kx0:o1KhxqwtdgI2MyzNORQtOflIwoHNV2Xd

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\hurok.exe	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\hurok.exe	CryptoLocker_set1

Checks computer location settings 2 TTPs 2 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

2024-05-23_10baee29ba1d8fc1a85b8e2a1ca5a97d_cryptolocker.exehurok.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-711569230-3659488422-571408806-1000\Control Panel\International\Geo\Nation	2024-05-23_10baee29ba1d8fc1a85b8e2a1ca5a97d_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-711569230-3659488422-571408806-1000\Control Panel\International\Geo\Nation	hurok.exe

Executes dropped EXE 1 IoCs

Processes:

hurok.exe

pid process

620 hurok.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
620	hurok.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-05-23_10baee29ba1d8fc1a85b8e2a1ca5a97d_cryptolocker.exe

description	pid	process	target process
PID 1248 wrote to memory of 620	1248	2024-05-23_10baee29ba1d8fc1a85b8e2a1ca5a97d_cryptolocker.exe	hurok.exe
PID 1248 wrote to memory of 620	1248	2024-05-23_10baee29ba1d8fc1a85b8e2a1ca5a97d_cryptolocker.exe	hurok.exe
PID 1248 wrote to memory of 620	1248	2024-05-23_10baee29ba1d8fc1a85b8e2a1ca5a97d_cryptolocker.exe	hurok.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-23_10baee29ba1d8fc1a85b8e2a1ca5a97d_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-23_10baee29ba1d8fc1a85b8e2a1ca5a97d_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1248

C:\Users\Admin\AppData\Local\Temp\hurok.exe
"C:\Users\Admin\AppData\Local\Temp\hurok.exe"
2⤵
- Checks computer location settings
- Executes dropped EXE
PID:620

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\hurok.exe
Filesize
45KB

MD5
cc6a663e7be279b6c6e3486c3c345af8

SHA1
8b42309e7f3ecde137c59e47b03593ebc388d573

SHA256
8864dc8ba2ee460fd7dcd98b93c7903eb66979ce738a5b0411b5f901aba40c57

SHA512
a4bd1b963cf72a8adc2b165454338512b518a729a4aefeab0915d0cb22528a37e8e8b12e58b13a97fd8348146bec45d20f9a59e3a01c4ddfc14cf032bc0d9a4d

Download Submit
memory/620-25-0x0000000001FC0000-0x0000000001FC6000-memory.dmp

Filesize
24KB

Download
memory/1248-0-0x0000000002040000-0x0000000002046000-memory.dmp

Filesize
24KB

Download
memory/1248-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/1248-8-0x0000000002040000-0x0000000002046000-memory.dmp

Filesize
24KB

Download