f8a41f99e85f416fb817b9cee3ef5869ad81f315f2e994207e65be4d58cbf072

Analysis

max time kernel
144s
max time network
157s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
13-03-2024 09:26

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General

Target

2024-03-13_08b237af49d968ed59a9b5472d9a40e3_cryptolocker.exe
Size

50KB
MD5

08b237af49d968ed59a9b5472d9a40e3
SHA1

623f35fd46e5eff524f2358e6e36b050396e6df4
SHA256

f8a41f99e85f416fb817b9cee3ef5869ad81f315f2e994207e65be4d58cbf072
SHA512

e8b510d5056895b15d63b430d3c08632f1a05bb7c5cc69711d2501c23cfac6d575ebca284e9191a784680f5981acc8a0459ba94f9d764c3fb5649fbc91ee27e6
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszsbKY1xzpAIKL:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7p

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000900000002326d-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000900000002326d-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-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	2024-03-13_08b237af49d968ed59a9b5472d9a40e3_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	hurok.exe

Executes dropped EXE 1 IoCs

pid	Process
2616	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 1800 wrote to memory of 2616	1800	2024-03-13_08b237af49d968ed59a9b5472d9a40e3_cryptolocker.exe	95
PID 1800 wrote to memory of 2616	1800	2024-03-13_08b237af49d968ed59a9b5472d9a40e3_cryptolocker.exe	95
PID 1800 wrote to memory of 2616	1800	2024-03-13_08b237af49d968ed59a9b5472d9a40e3_cryptolocker.exe	95

C:\Users\Admin\AppData\Local\Temp\2024-03-13_08b237af49d968ed59a9b5472d9a40e3_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-13_08b237af49d968ed59a9b5472d9a40e3_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1800
- 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:2616

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4156 --field-trial-handle=2180,i,12780723798465539942,12010519452607841069,262144 --variations-seed-version /prefetch:8
1⤵
PID:2776

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
50KB

MD5
84de46eced9ace1b5105dcdea6a87093

SHA1
a2aa83f653116cd55e5a113aa7114fbc8c4f9863

SHA256
5114b1320eeddbb560edb43873a0ec78ecee22d7fa6656bbf700c50086f92d54

SHA512
15678219a6455b590dc7841a75ce4068089f2a9d2d8c37e76550905a6610eb948518634dad69e023986d81a16f4f553114d6f4a973391dbf0d200c053923d68d

Download Submit
memory/1800-0-0x0000000002190000-0x0000000002196000-memory.dmp

Filesize
24KB

Download
memory/1800-1-0x0000000002190000-0x0000000002196000-memory.dmp

Filesize
24KB

Download
memory/1800-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2616-19-0x0000000000550000-0x0000000000556000-memory.dmp

Filesize
24KB

Download