0e54f81d03adb33a4bc6a15c1a9b0d9b6991dc2c5654594dd7be6fcdec4e07da

Analysis

max time kernel
141s
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
12-02-2024 20:21

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General

Target

2024-02-12_d08b409f607bba4e8b2ad695fe95c457_cryptolocker.exe
Size

49KB
MD5

d08b409f607bba4e8b2ad695fe95c457
SHA1

3ef302998892d9f6f8c1cc5d18f536ea8eb74439
SHA256

0e54f81d03adb33a4bc6a15c1a9b0d9b6991dc2c5654594dd7be6fcdec4e07da
SHA512

915f036ad672806ebb3a44e9143bdaec42672631074bf98eeb6a4ab574fcee6158dcd95e7c625d4f2b0e8d774df79ee9a4225e4360c704f1cc06c9f3d374bc94
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszsbKY1xzpAIKh:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7z

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:

2024-02-12_d08b409f607bba4e8b2ad695fe95c457_cryptolocker.exehurok.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-635608581-3370340891-292606865-1000\Control Panel\International\Geo\Nation	2024-02-12_d08b409f607bba4e8b2ad695fe95c457_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-635608581-3370340891-292606865-1000\Control Panel\International\Geo\Nation	hurok.exe

Executes dropped EXE 1 IoCs

Processes:

hurok.exe

pid process

4212 hurok.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
4212	hurok.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-02-12_d08b409f607bba4e8b2ad695fe95c457_cryptolocker.exe

description	pid	process	target process
PID 3816 wrote to memory of 4212	3816	2024-02-12_d08b409f607bba4e8b2ad695fe95c457_cryptolocker.exe	hurok.exe
PID 3816 wrote to memory of 4212	3816	2024-02-12_d08b409f607bba4e8b2ad695fe95c457_cryptolocker.exe	hurok.exe
PID 3816 wrote to memory of 4212	3816	2024-02-12_d08b409f607bba4e8b2ad695fe95c457_cryptolocker.exe	hurok.exe

C:\Users\Admin\AppData\Local\Temp\2024-02-12_d08b409f607bba4e8b2ad695fe95c457_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-12_d08b409f607bba4e8b2ad695fe95c457_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3816

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:4212

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
49KB

MD5
08f4b52ccc1199b98d43903d2e74ca1c

SHA1
14168f1b17631a0d3ab958b4dbe5ed6159b0763c

SHA256
06a4ce805c53b4ba337f930c79c829d7bde04b7b2459c54561b419ad81ca8e2c

SHA512
9308e3ba86a1e65de83df1c69dfbbe40eeb646f68d1ae5b569c3bd8b124294e978ed6eda4bfe6eff350d5b547e2d3f1b949588c1943a0e2284b8acb10f4b4e7d

Download Submit
C:\Users\Admin\AppData\Local\Temp\hurrok.exe

Filesize
1KB

MD5
1a7abf97cba1cbf448e8858c123ee212

SHA1
3b66d1148fa7facb1b480e9ff98cfe9ca1e676c9

SHA256
7cd32e2acc96a02b1d68a5b535bce554bae315bbc2965c7c57e09670d679ef83

SHA512
d025492e25d7f996a5790383910b23bb0c0290286c5e6f0aee45772fe2e90a4f2c19fdc30f12195a08d685f5b4c282beb3c9c08bea210848fb2f340b1773f19e

Download Submit
memory/3816-0-0x00000000005B0000-0x00000000005B6000-memory.dmp

Filesize
24KB

Download
memory/3816-1-0x00000000005B0000-0x00000000005B6000-memory.dmp

Filesize
24KB

Download
memory/3816-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4212-20-0x00000000021B0000-0x00000000021B6000-memory.dmp

Filesize
24KB

Download