401bd2a1c66782ec8dfacf99b6f948965fd7dc148bfeb8a1a54ad83d5244217b

Analysis

max time kernel
138s
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
07-03-2024 23:22

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General

Target

2024-03-07_103a895ed4664a1f4bfea5fa029432ee_cryptolocker.exe
Size

46KB
MD5

103a895ed4664a1f4bfea5fa029432ee
SHA1

285657de7db2174183d90db4bfed648ff0b24a77
SHA256

401bd2a1c66782ec8dfacf99b6f948965fd7dc148bfeb8a1a54ad83d5244217b
SHA512

bb4249f48e8ad26487d3a1f7347c26a9d5de9ac6ae7107bfbe5f9af0a108f6f9605eebdc3f2bf1979deeb4c8ca9dd30b94bbdd5dd56f8092607edbb8d591a1d3
SSDEEP

768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGpebVIYLHA3Kxd:o1KhxqwtdgI2MyzNORQtOflIwoHNV2Xk

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000001e59e-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000001e59e-12.dat	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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-399997616-3400990511-967324271-1000\Control Panel\International\Geo\Nation	2024-03-07_103a895ed4664a1f4bfea5fa029432ee_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-399997616-3400990511-967324271-1000\Control Panel\International\Geo\Nation	hurok.exe

Executes dropped EXE 1 IoCs

pid	Process
3424	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 3244 wrote to memory of 3424	3244	2024-03-07_103a895ed4664a1f4bfea5fa029432ee_cryptolocker.exe	89
PID 3244 wrote to memory of 3424	3244	2024-03-07_103a895ed4664a1f4bfea5fa029432ee_cryptolocker.exe	89
PID 3244 wrote to memory of 3424	3244	2024-03-07_103a895ed4664a1f4bfea5fa029432ee_cryptolocker.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-03-07_103a895ed4664a1f4bfea5fa029432ee_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-07_103a895ed4664a1f4bfea5fa029432ee_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3244
- 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:3424

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
46KB

MD5
7833c63e8af20b31f3ed90d2e1aa45e5

SHA1
344f7a0fdf17b159dcac02531707f9e2e60d403a

SHA256
d54ce28656fa2e865a621da955658f3e0dbefdbc70509a23058cf8625f2d9c29

SHA512
b5f60da57cf59dbcde826c1a7d545f281df32d06f1fc0dcf1a2bdc55510c8a4b17e504e66308a4ea848a9f424ed269d56b5ebad3894458a604f57c7251161a7a

Download Submit
memory/3244-0-0x0000000002140000-0x0000000002146000-memory.dmp

Filesize
24KB

Download
memory/3244-1-0x0000000002140000-0x0000000002146000-memory.dmp

Filesize
24KB

Download
memory/3244-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/3424-23-0x0000000000590000-0x0000000000596000-memory.dmp

Filesize
24KB

Download