ba89827a062c91b4977521ea84c8a28e2dd589d70ae4af45900ba39086b3e760

Analysis

max time kernel
146s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
06/03/2024, 18:08

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General

Target

2024-03-06_faf61bd6a4b7b4559e645ca1e9038d8e_cryptolocker.exe
Size

43KB
MD5

faf61bd6a4b7b4559e645ca1e9038d8e
SHA1

3c7a1f0028345f49395206dd657216bb0be40c03
SHA256

ba89827a062c91b4977521ea84c8a28e2dd589d70ae4af45900ba39086b3e760
SHA512

ef56bd22a065a096e85177ee8cee1da544672b5c74427f17a81ce7f2d668e554c3e5530dc112ee3da87e3bd1623840c8ef7ecca2847f834e9e5b5abf5beeb3fc
SSDEEP

768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGpebVIYLHA3KxW:o1KhxqwtdgI2MyzNORQtOflIwoHNV2X7

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023209-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023209-12.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-1-5-21-557049126-2506969350-2798870634-1000\Control Panel\International\Geo\Nation	2024-03-06_faf61bd6a4b7b4559e645ca1e9038d8e_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-557049126-2506969350-2798870634-1000\Control Panel\International\Geo\Nation	hurok.exe

Executes dropped EXE 1 IoCs

pid	Process
4944	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 3776 wrote to memory of 4944	3776	2024-03-06_faf61bd6a4b7b4559e645ca1e9038d8e_cryptolocker.exe	90
PID 3776 wrote to memory of 4944	3776	2024-03-06_faf61bd6a4b7b4559e645ca1e9038d8e_cryptolocker.exe	90
PID 3776 wrote to memory of 4944	3776	2024-03-06_faf61bd6a4b7b4559e645ca1e9038d8e_cryptolocker.exe	90

C:\Users\Admin\AppData\Local\Temp\2024-03-06_faf61bd6a4b7b4559e645ca1e9038d8e_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-06_faf61bd6a4b7b4559e645ca1e9038d8e_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3776
- 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:4944

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
43KB

MD5
0bc47d405a7a39d29d0572a46d2dcd22

SHA1
f8249cf8730f69f0f4859b36cff336166f711098

SHA256
28f094f6eda487ad36cfac337723cff2d8967a7e8160a4430df100bbcccdb7cf

SHA512
a4a9c9f8a20fff2ff5675b5d666571ff5b99b54dcaf228d5b37a3d3766abd44e35be572202efbe16dd0b1c779f68a81a3febb840a8427b0b5e572c37c74bdfd5

Download Submit
memory/3776-0-0x00000000005D0000-0x00000000005D6000-memory.dmp

Filesize
24KB

Download
memory/3776-1-0x00000000005D0000-0x00000000005D6000-memory.dmp

Filesize
24KB

Download
memory/3776-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4944-19-0x00000000005B0000-0x00000000005B6000-memory.dmp

Filesize
24KB

Download