b91e25cae10429256e1b25a2990db4401a93d7b7a25201b6a95385410793e29f

Analysis

max time kernel
140s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
24/01/2024, 20:22

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General

Target

2024-01-24_163e72755be7a9201537b6407fe05460_cryptolocker.exe
Size

61KB
MD5

163e72755be7a9201537b6407fe05460
SHA1

1a3998e792cebbd5467182d53686f5916b2f1fb1
SHA256

b91e25cae10429256e1b25a2990db4401a93d7b7a25201b6a95385410793e29f
SHA512

a855026dcd3a9d2637a66102f2c357ac1fdca64376cd062eeb4bc6c81804b719ec5a8e3b42a81811db8f13894661118279639aaaeb72a3b916a82950f15fcf6d
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszudnYTjipvF299S:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7K

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00070000000231f9-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x00070000000231f9-12.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-1-5-21-3803511929-1339359695-2191195476-1000\Control Panel\International\Geo\Nation	2024-01-24_163e72755be7a9201537b6407fe05460_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3803511929-1339359695-2191195476-1000\Control Panel\International\Geo\Nation	hurok.exe

Executes dropped EXE 1 IoCs

pid	Process
1772	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 3884 wrote to memory of 1772	3884	2024-01-24_163e72755be7a9201537b6407fe05460_cryptolocker.exe	48
PID 3884 wrote to memory of 1772	3884	2024-01-24_163e72755be7a9201537b6407fe05460_cryptolocker.exe	48
PID 3884 wrote to memory of 1772	3884	2024-01-24_163e72755be7a9201537b6407fe05460_cryptolocker.exe	48

C:\Users\Admin\AppData\Local\Temp\2024-01-24_163e72755be7a9201537b6407fe05460_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-24_163e72755be7a9201537b6407fe05460_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3884
- 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:1772

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
61KB

MD5
f6890c70dadd541aca06f394af0205d6

SHA1
f10a67c0c0320b81d8546d6761ad6f1f4be75ee3

SHA256
bd2ddb5fe45da9a636b2f71394728c6d5a9f8f878b1fd057d20a82072f563b89

SHA512
60a075d05ac8b4a07e3da18fb495135ac1882448d43111f669e33524545d87ab22a28495fa230ddd7960d308ab459e2fd5a4d7d86d5f3e4c7e1290944cd31f20

Download Submit
memory/1772-20-0x00000000004C0000-0x00000000004C6000-memory.dmp

Filesize
24KB

Download
memory/3884-0-0x0000000000590000-0x0000000000596000-memory.dmp

Filesize
24KB

Download
memory/3884-1-0x0000000000590000-0x0000000000596000-memory.dmp

Filesize
24KB

Download
memory/3884-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download