1bab6e515375532ed9d76beb50e04ee803fe4f637d73a51a558ed9a54f4a3c9b

Analysis

max time kernel
89s
max time network
123s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
26/03/2024, 06:29

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General

Target

2024-03-26_3427e1af7f0641b36a86f2575f1970c2_cryptolocker.exe
Size

65KB
MD5

3427e1af7f0641b36a86f2575f1970c2
SHA1

89b39c1218a98a3034be09db7b83a124f71fb74b
SHA256

1bab6e515375532ed9d76beb50e04ee803fe4f637d73a51a558ed9a54f4a3c9b
SHA512

b888e9799ac081dc724952662baf7abf621d8032e6ad1b594c514052b6b01e9bea13a7365bb0ae184ed9206f5e8dbf6c2dcda3f890cc3eafa15ad1b0d499248f
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszudnYTjipvF293vaRLY:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7Z

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000c000000023165-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000c000000023165-12.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	2024-03-26_3427e1af7f0641b36a86f2575f1970c2_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2016	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 4784 wrote to memory of 2016	4784	2024-03-26_3427e1af7f0641b36a86f2575f1970c2_cryptolocker.exe	83
PID 4784 wrote to memory of 2016	4784	2024-03-26_3427e1af7f0641b36a86f2575f1970c2_cryptolocker.exe	83
PID 4784 wrote to memory of 2016	4784	2024-03-26_3427e1af7f0641b36a86f2575f1970c2_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-03-26_3427e1af7f0641b36a86f2575f1970c2_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-26_3427e1af7f0641b36a86f2575f1970c2_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4784
- 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:2016

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
65KB

MD5
50077bd5447b46c7ae69960df64aa729

SHA1
b3399d40ef656f21eb3d37b05a615b1f09f0dcc9

SHA256
334902cfa287bce2baf93fce8542c049906567d34d310584d9ca1808234e002b

SHA512
88d7307307e199d534f2eb3ab1a453381edfea11cd251cd1afdce1f24052d28cc2fa2a23e7f0d5c1ca5e8a10c76a2252826347cf6c5d4a5e758b730800425f97

Download Submit
memory/2016-22-0x0000000001FC0000-0x0000000001FC6000-memory.dmp

Filesize
24KB

Download
memory/4784-0-0x00000000005D0000-0x00000000005D6000-memory.dmp

Filesize
24KB

Download
memory/4784-1-0x00000000005D0000-0x00000000005D6000-memory.dmp

Filesize
24KB

Download
memory/4784-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download