930db356202b0f1b795cc7f64d7b06d755d199ff4ff4db1324f57de53d29a430

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240419-en
resource tags

arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
submitted
30/04/2024, 01:00

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General

Target

2024-04-30_c51cb3194f4eb2e9fbd2320ebfc996b5_cryptolocker.exe
Size

64KB
MD5

c51cb3194f4eb2e9fbd2320ebfc996b5
SHA1

571a12a9523fc48b5cad6ebb3c76f9c218ed3eef
SHA256

930db356202b0f1b795cc7f64d7b06d755d199ff4ff4db1324f57de53d29a430
SHA512

6e5b6bdb2e85516c5d5b09029b0c4eb7914e94115314df5f0a60e922b88808a699355b139303b6bd47a9b2b375a8624a0e0dfb4dcffd8f58c87af780a73924bb
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszudnYTjipvF299d:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7V

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000c000000023b3b-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000c000000023b3b-12.dat	CryptoLocker_set1

Checks computer location settings 2 TTPs 1 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-1-5-21-17203666-93769886-2545153620-1000\Control Panel\International\Geo\Nation	2024-04-30_c51cb3194f4eb2e9fbd2320ebfc996b5_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4600	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 5056 wrote to memory of 4600	5056	2024-04-30_c51cb3194f4eb2e9fbd2320ebfc996b5_cryptolocker.exe	84
PID 5056 wrote to memory of 4600	5056	2024-04-30_c51cb3194f4eb2e9fbd2320ebfc996b5_cryptolocker.exe	84
PID 5056 wrote to memory of 4600	5056	2024-04-30_c51cb3194f4eb2e9fbd2320ebfc996b5_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-04-30_c51cb3194f4eb2e9fbd2320ebfc996b5_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-30_c51cb3194f4eb2e9fbd2320ebfc996b5_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:5056
- C:\Users\Admin\AppData\Local\Temp\hurok.exe
  "C:\Users\Admin\AppData\Local\Temp\hurok.exe"
  2⤵
  - Executes dropped EXE
  PID:4600

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
64KB

MD5
8c92860dae563db488a9ed40ac003e6f

SHA1
b00017c20e503c6b25be31ba029e2ce25e5a3177

SHA256
59ca2eb7274703d3f240bd181a2a37694d1c37340e3ae8dd82658cabfa74decf

SHA512
cf22264698a023b73be530826d8d9f1ea71adca72bc3b9c1134206ff1ce782506952439ec02a9593fbc1e8237162a62925795bc348b0f43b1bb6dd8cc2b0ed73

Download Submit
memory/4600-25-0x0000000000560000-0x0000000000566000-memory.dmp

Filesize
24KB

Download
memory/5056-0-0x0000000000580000-0x0000000000586000-memory.dmp

Filesize
24KB

Download
memory/5056-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/5056-8-0x0000000000580000-0x0000000000586000-memory.dmp

Filesize
24KB

Download