f2a8aeabfdef36b6943d4cd7e364e59035840b5aaf4b3bb1418fab7e4239d1a1

Analysis

max time kernel
134s
max time network
125s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
22-05-2024 22:00

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General

Target

2024-05-22_fb712f8fd059549e426f8a65f59e814f_cryptolocker.exe
Size

53KB
MD5

fb712f8fd059549e426f8a65f59e814f
SHA1

ea20058c5726f48bb8d35747426f5d1065754f3e
SHA256

f2a8aeabfdef36b6943d4cd7e364e59035840b5aaf4b3bb1418fab7e4239d1a1
SHA512

d0b17d598c54a739b28f21153173357ff2bb4dd59626a80a27c4f05db08914506e1035773836fbbd19e7d7fa36d5d93550e0a1edf3b4573bebcf659465480f48
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszsbKY1xzpAIKx61:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7S

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:

2024-05-22_fb712f8fd059549e426f8a65f59e814f_cryptolocker.exehurok.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation	2024-05-22_fb712f8fd059549e426f8a65f59e814f_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation	hurok.exe

Executes dropped EXE 1 IoCs

Processes:

hurok.exe

pid process

4396 hurok.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
4396	hurok.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-05-22_fb712f8fd059549e426f8a65f59e814f_cryptolocker.exe

description	pid	process	target process
PID 5040 wrote to memory of 4396	5040	2024-05-22_fb712f8fd059549e426f8a65f59e814f_cryptolocker.exe	hurok.exe
PID 5040 wrote to memory of 4396	5040	2024-05-22_fb712f8fd059549e426f8a65f59e814f_cryptolocker.exe	hurok.exe
PID 5040 wrote to memory of 4396	5040	2024-05-22_fb712f8fd059549e426f8a65f59e814f_cryptolocker.exe	hurok.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-22_fb712f8fd059549e426f8a65f59e814f_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-22_fb712f8fd059549e426f8a65f59e814f_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:5040
- 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:4396

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
53KB

MD5
8af44a268fec2a0d6224000edf9a3297

SHA1
33c4985359abc7ef64b756e1c1eed01b6c5c01da

SHA256
47f411572511c87fcf1fdfa981b296a0d9f3eedaf9358643baede198e0f8c2da

SHA512
cde0cfaea5d00bbb9063f6a0a4439f87f4b0576307ec345f1b03398c9ad04c4d06dd32a22d0a9e631e0a4837ac2791d32ac8eb996b79576a9ab75dfaced17149

Download Submit
memory/4396-25-0x00000000005D0000-0x00000000005D6000-memory.dmp

Filesize
24KB

Download
memory/5040-0-0x00000000020C0000-0x00000000020C6000-memory.dmp

Filesize
24KB

Download
memory/5040-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/5040-8-0x00000000020C0000-0x00000000020C6000-memory.dmp

Filesize
24KB

Download