84e6ebfebafbd17d831841217c08c2372fc6848032f47192f64d80520de9c547

Analysis

max time kernel
88s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
27/01/2024, 05:29

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General

Target

2024-01-27_9d6e5ea45495104b4b3ed72cb7387fa1_cryptolocker.exe
Size

62KB
MD5

9d6e5ea45495104b4b3ed72cb7387fa1
SHA1

fcbc53a930dc2410e62997504cd788489d4bedaa
SHA256

84e6ebfebafbd17d831841217c08c2372fc6848032f47192f64d80520de9c547
SHA512

71a5ebe2e99635d851207c5e81fa236bd4fe9562ce7a50ec7ca0a2a7648e7807e8547e4649ab1a3682b102a8100984460eabdc331080719c7ae898fa52a2a63a
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszudnYTjipvF293v+:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7o

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000c000000023157-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000c000000023157-12.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-1-5-21-1497073144-2389943819-3385106915-1000\Control Panel\International\Geo\Nation	hurok.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\Control Panel\International\Geo\Nation	2024-01-27_9d6e5ea45495104b4b3ed72cb7387fa1_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1144	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 1832 wrote to memory of 1144	1832	2024-01-27_9d6e5ea45495104b4b3ed72cb7387fa1_cryptolocker.exe	88
PID 1832 wrote to memory of 1144	1832	2024-01-27_9d6e5ea45495104b4b3ed72cb7387fa1_cryptolocker.exe	88
PID 1832 wrote to memory of 1144	1832	2024-01-27_9d6e5ea45495104b4b3ed72cb7387fa1_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-01-27_9d6e5ea45495104b4b3ed72cb7387fa1_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-27_9d6e5ea45495104b4b3ed72cb7387fa1_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1832
- 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:1144

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
63KB

MD5
12255310668b249f6678914faefe34a3

SHA1
15bc88c58cf9f8542f869885a0aa9906d98476e0

SHA256
50f9455a2f9699d5d0797c238da35a1125db145a1037e156c03565bc73fd9d8a

SHA512
ebbaa532771afde68e4da808c69cbaeae4dc948a4a05cf5a56bd1de6fc231697b785738fd1c1aeeebf425f9c2f34b2d64cf95b16c5a3a1827c129e907e2e8083

Download Submit
memory/1144-25-0x0000000000480000-0x0000000000486000-memory.dmp

Filesize
24KB

Download
memory/1832-0-0x0000000002200000-0x0000000002206000-memory.dmp

Filesize
24KB

Download
memory/1832-1-0x0000000002200000-0x0000000002206000-memory.dmp

Filesize
24KB

Download
memory/1832-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download