71f90df72324f318b89087d7fa60e26821f56216b2cddd4ff20423cb2851f933

Analysis

max time kernel
141s
max time network
125s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
09-05-2024 04:43

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General

Target

2024-05-09_863e25a4fcd3a7b94ca61b1b78bc4425_cryptolocker.exe
Size

52KB
MD5

863e25a4fcd3a7b94ca61b1b78bc4425
SHA1

586d5851e9c40e31f327db0d4cfc2d825f39bcbb
SHA256

71f90df72324f318b89087d7fa60e26821f56216b2cddd4ff20423cb2851f933
SHA512

7381768a5cb0dbd4380e511d37e1ac627d744df8bbf2526d927ca76353850049118b9901802d94c2a86b806c8689324bccadc2d0d4f716dca9b288fd86a18ef8
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszsbKY1xzpAIIZw:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7o

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023286-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023286-12.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-1-5-21-540404634-651139247-2967210625-1000\Control Panel\International\Geo\Nation	2024-05-09_863e25a4fcd3a7b94ca61b1b78bc4425_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-540404634-651139247-2967210625-1000\Control Panel\International\Geo\Nation	hurok.exe

Executes dropped EXE 1 IoCs

pid	Process
2972	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 232 wrote to memory of 2972	232	2024-05-09_863e25a4fcd3a7b94ca61b1b78bc4425_cryptolocker.exe	83
PID 232 wrote to memory of 2972	232	2024-05-09_863e25a4fcd3a7b94ca61b1b78bc4425_cryptolocker.exe	83
PID 232 wrote to memory of 2972	232	2024-05-09_863e25a4fcd3a7b94ca61b1b78bc4425_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-05-09_863e25a4fcd3a7b94ca61b1b78bc4425_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-09_863e25a4fcd3a7b94ca61b1b78bc4425_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:232
- 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:2972

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
52KB

MD5
8bd19c6b66fec89003fcafa3b5f833ca

SHA1
d6c94b76b5f1e0a729180684f16cc91ef917a6f3

SHA256
b8f487ce646f8122ebc83fc728dcf11cdbafb3bc4a71b42464af1bdd40fb7dde

SHA512
698690de6dc5ae675b606eccd20ba4971d9eef88e00e451b3bb1fb1c6ebd27ab53b942503eee08e54ffb02c3f47dcb7a37358130266d08c82078c69ce6b41744

Download Submit
memory/232-0-0x0000000002050000-0x0000000002056000-memory.dmp

Filesize
24KB

Download
memory/232-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/232-1-0x0000000002050000-0x0000000002056000-memory.dmp

Filesize
24KB

Download
memory/232-17-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2972-25-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download