e2f7ae9336474ccb55c486d7c9252835372a0d42dbaa338b08bc062725c5a56c

Analysis

max time kernel
141s
max time network
124s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
22-05-2024 02:49

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General

Target

2024-05-22_c3c7f65bee3acfc90779855fb6e8f5ae_cryptolocker.exe
Size

63KB
MD5

c3c7f65bee3acfc90779855fb6e8f5ae
SHA1

8ff359f76c48ac1f6ad6ff5d486e253f03d49334
SHA256

e2f7ae9336474ccb55c486d7c9252835372a0d42dbaa338b08bc062725c5a56c
SHA512

7a9b07d57509eafb50db6ca88a6b57e0643ffa306cac11d8efce594d587fe5307e5f28a0a82e19d87c18bde00ea75b447ec96839a2b4c0d7d3c6c78a0049d462
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszudnYTjipvF293Wg:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7f

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\hurok.exe	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\hurok.exe	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

Processes:

2024-05-22_c3c7f65bee3acfc90779855fb6e8f5ae_cryptolocker.exehurok.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation	2024-05-22_c3c7f65bee3acfc90779855fb6e8f5ae_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation	hurok.exe

Executes dropped EXE 1 IoCs

Processes:

hurok.exe

pid process

4544 hurok.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
4544	hurok.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-05-22_c3c7f65bee3acfc90779855fb6e8f5ae_cryptolocker.exe

description	pid	process	target process
PID 1436 wrote to memory of 4544	1436	2024-05-22_c3c7f65bee3acfc90779855fb6e8f5ae_cryptolocker.exe	hurok.exe
PID 1436 wrote to memory of 4544	1436	2024-05-22_c3c7f65bee3acfc90779855fb6e8f5ae_cryptolocker.exe	hurok.exe
PID 1436 wrote to memory of 4544	1436	2024-05-22_c3c7f65bee3acfc90779855fb6e8f5ae_cryptolocker.exe	hurok.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-22_c3c7f65bee3acfc90779855fb6e8f5ae_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-22_c3c7f65bee3acfc90779855fb6e8f5ae_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1436

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:4544

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\hurok.exe
Filesize
63KB

MD5
3c3c5778efdcced25272e7fd50436c7e

SHA1
8292e1021862cbb80a38682cfa7d23471e75d222

SHA256
a18c6311215457aa63403f14bdcf399df3663be1c08f25dc42d50c228e8ca836

SHA512
7d59d7f3abd5bcd8c8d3e750dfeb3c2ad06da6cf741c28fe2dc7034d76d011aafe64ec354a7e97f5d910bd94d1683d59cf19ddeab04adccef0b560f6954fb18e

Download Submit
memory/1436-0-0x00000000020C0000-0x00000000020C6000-memory.dmp

Filesize
24KB

Download
memory/1436-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/1436-8-0x00000000020C0000-0x00000000020C6000-memory.dmp

Filesize
24KB

Download
memory/4544-25-0x0000000000490000-0x0000000000496000-memory.dmp

Filesize
24KB

Download