a15c401ff90e5afdf2df2197b2c73e4e6e1e1311199980cfe4e18dca1ad40c14

Analysis

max time kernel
150s
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
13-06-2024 00:59

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General

Target

2024-06-13_fa940e66ad9a302fd6281d2e1082b5d1_cryptolocker.exe
Size

44KB
MD5

fa940e66ad9a302fd6281d2e1082b5d1
SHA1

d6ea3e91dcd073e66ee40f97b6de536bd667e5a4
SHA256

a15c401ff90e5afdf2df2197b2c73e4e6e1e1311199980cfe4e18dca1ad40c14
SHA512

f96e61a3c2b7d94589a7fcd977eb6a07e8a13610b3d818844f48d5f1557a68b9cc946f50e0c89654ec28e29b0f42d88bf84c6987c21ca6924e2118bbeb8d7022
SSDEEP

768:nf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGWXOQ69zbjlAAE:f1KhxqwtdgI2MyzNORQtOflIwoHNV2Xq

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000002328e-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000002328e-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-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation	2024-06-13_fa940e66ad9a302fd6281d2e1082b5d1_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2280	hurok.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 4516 wrote to memory of 2280	4516	2024-06-13_fa940e66ad9a302fd6281d2e1082b5d1_cryptolocker.exe	82
PID 4516 wrote to memory of 2280	4516	2024-06-13_fa940e66ad9a302fd6281d2e1082b5d1_cryptolocker.exe	82
PID 4516 wrote to memory of 2280	4516	2024-06-13_fa940e66ad9a302fd6281d2e1082b5d1_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-06-13_fa940e66ad9a302fd6281d2e1082b5d1_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-13_fa940e66ad9a302fd6281d2e1082b5d1_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4516
- C:\Users\Admin\AppData\Local\Temp\hurok.exe
  "C:\Users\Admin\AppData\Local\Temp\hurok.exe"
  2⤵
  - Executes dropped EXE
  PID:2280

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
e71b405fcef153af401119ebc9fd58b8

SHA1
eb743ef329a2a89d7e4e9a5db6e348d99faa402d

SHA256
1e45ae1938c5f3cffe357550995d90d07809badb2dbbbf4f101e9f165011e0c9

SHA512
dea4724014533f7a0e93c879ab2eff8d3b828c4751c38605314f2d0176438b9f88446d5c729d30ef7453119a10cc510ad2ce274b16f06714dfdcc73f8140cf76

Download Submit
memory/2280-25-0x00000000005C0000-0x00000000005C6000-memory.dmp

Filesize
24KB

Download
memory/4516-0-0x00000000004C0000-0x00000000004C6000-memory.dmp

Filesize
24KB

Download
memory/4516-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4516-8-0x00000000004C0000-0x00000000004C6000-memory.dmp

Filesize
24KB

Download