5fb708693db81c339d60152f304c56b58fa274f63af4d264ac8c4cb6ea933fea

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
23-05-2024 01:23

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General

Target

2024-05-23_2e819c9f484c0836db14b1da15f3bbe5_cryptolocker.exe
Size

44KB
MD5

2e819c9f484c0836db14b1da15f3bbe5
SHA1

22b7e9281ce77d33e6a17905fc02b0bfd56f0e4d
SHA256

5fb708693db81c339d60152f304c56b58fa274f63af4d264ac8c4cb6ea933fea
SHA512

a24852cbf9f7fa8db70417bdd6b3ee7b2e0faf0694e9362a804063b65c5199f62650c7abe9e4d51e2da5966d90cfba129b6d8e351c65915a95cf8f683ad08129
SSDEEP

768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGpebVIYLHA3Kxg:o1KhxqwtdgI2MyzNORQtOflIwoHNV2Xx

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_2e819c9f484c0836db14b1da15f3bbe5_cryptolocker.exehurok.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3558294865-3673844354-2255444939-1000\Control Panel\International\Geo\Nation	2024-05-23_2e819c9f484c0836db14b1da15f3bbe5_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3558294865-3673844354-2255444939-1000\Control Panel\International\Geo\Nation	hurok.exe

Executes dropped EXE 1 IoCs

Processes:

hurok.exe

pid process

2580 hurok.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2580	hurok.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-05-23_2e819c9f484c0836db14b1da15f3bbe5_cryptolocker.exe

description	pid	process	target process
PID 1280 wrote to memory of 2580	1280	2024-05-23_2e819c9f484c0836db14b1da15f3bbe5_cryptolocker.exe	hurok.exe
PID 1280 wrote to memory of 2580	1280	2024-05-23_2e819c9f484c0836db14b1da15f3bbe5_cryptolocker.exe	hurok.exe
PID 1280 wrote to memory of 2580	1280	2024-05-23_2e819c9f484c0836db14b1da15f3bbe5_cryptolocker.exe	hurok.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-23_2e819c9f484c0836db14b1da15f3bbe5_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-23_2e819c9f484c0836db14b1da15f3bbe5_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1280

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:2580

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\hurok.exe
Filesize
45KB

MD5
7e1d9b5d89ab0c293f34abf6bf6d749f

SHA1
77dde26b8a4b6c4b7a39c460ce54e5c16ab204ac

SHA256
a6bec7f5b131fb1f50560d641e87dead110788e2c0e103a818c11ccfbca4298e

SHA512
bbb0ffca657b8687030f086f725282888b3d14c76ccd21c4ace9f497367ba2ba6aa4fee6558319461dac89f3dfdfbcc5174c8a7016897b510af9b9c73e4e7767

Download Submit
memory/1280-0-0x0000000000590000-0x0000000000596000-memory.dmp

Filesize
24KB

Download
memory/1280-6-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/1280-7-0x0000000000590000-0x0000000000596000-memory.dmp

Filesize
24KB

Download
memory/2580-25-0x0000000000720000-0x0000000000726000-memory.dmp

Filesize
24KB

Download