a50dd7ec6d1329477b4139cad641821eeac715d74f56ebf6cc059ea377cb1e10

Analysis

max time kernel
93s
max time network
122s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
21/05/2024, 15:59

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General

Target

2024-05-21_cf3c162205fc2a081d815ccea7948ae7_cryptolocker.exe
Size

65KB
MD5

cf3c162205fc2a081d815ccea7948ae7
SHA1

81cdc9b3f77ab884ebc0295809bd021e197a0be6
SHA256

a50dd7ec6d1329477b4139cad641821eeac715d74f56ebf6cc059ea377cb1e10
SHA512

10d0d23a07dba58f54b892de70dde059aca33ad7255f1da4fe054149548f82fe4dd6352c108998a61eb24ff21fc45cce8f7d2fbdf0ce0187832e58d06e6d509f
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszudnYTjipvF29984E:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7o

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000600000002326f-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000600000002326f-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-1-5-21-2539840389-1261165778-1087677076-1000\Control Panel\International\Geo\Nation	2024-05-21_cf3c162205fc2a081d815ccea7948ae7_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2539840389-1261165778-1087677076-1000\Control Panel\International\Geo\Nation	hurok.exe

Executes dropped EXE 1 IoCs

pid	Process
5056	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 3564 wrote to memory of 5056	3564	2024-05-21_cf3c162205fc2a081d815ccea7948ae7_cryptolocker.exe	83
PID 3564 wrote to memory of 5056	3564	2024-05-21_cf3c162205fc2a081d815ccea7948ae7_cryptolocker.exe	83
PID 3564 wrote to memory of 5056	3564	2024-05-21_cf3c162205fc2a081d815ccea7948ae7_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-05-21_cf3c162205fc2a081d815ccea7948ae7_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-21_cf3c162205fc2a081d815ccea7948ae7_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3564
- 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:5056

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
2e575e0b59a6dd2d3ffbeccbca073d0b

SHA1
5b3dec5ff38830a1f9954ff4812865269cb5f6cc

SHA256
237c6d6432a9bc41be2e4285a231c731ad2c7de59f3c73bd51a7a3901affb948

SHA512
3c5e838bbf0c6a9cae037c8c92d8b5af6a3fc698e200b767f4bce6b6d56e34470343d631b7b60061dc3da1c2affdb57b82f424189fa3e8c45e98d71ec458f2a5

Download Submit
memory/3564-0-0x00000000020C0000-0x00000000020C6000-memory.dmp

Filesize
24KB

Download
memory/3564-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/3564-8-0x00000000020C0000-0x00000000020C6000-memory.dmp

Filesize
24KB

Download
memory/5056-25-0x0000000000590000-0x0000000000596000-memory.dmp

Filesize
24KB

Download