cda896002cf267afce759fe971484e65d4b4cce2fc92931af3e964f511ddac32

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
12-06-2024 19:42

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General

Target

2024-06-12_9113b23a012c26292950b40a9c95a479_cryptolocker.exe
Size

38KB
MD5

9113b23a012c26292950b40a9c95a479
SHA1

77557e868da708c8164f9034e4fd46571bac1925
SHA256

cda896002cf267afce759fe971484e65d4b4cce2fc92931af3e964f511ddac32
SHA512

93d08917d5c43e806bec0c9c90b78454af38d713e1dd20501fe72ebebff9e4b7e8ccdbd7b9f78622f50e69a43cc544c4c575fcb5d380ce3c5a0d3d6346c3b78d
SSDEEP

768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGp/YIm7wm0WZyP:o1KhxqwtdgI2MyzNORQtOflIwoHNV2Xx

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00070000000232a4-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x00070000000232a4-12.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-1-5-21-2804150937-2146708401-419095071-1000\Control Panel\International\Geo\Nation	2024-06-12_9113b23a012c26292950b40a9c95a479_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
412	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 4132 wrote to memory of 412	4132	2024-06-12_9113b23a012c26292950b40a9c95a479_cryptolocker.exe	81
PID 4132 wrote to memory of 412	4132	2024-06-12_9113b23a012c26292950b40a9c95a479_cryptolocker.exe	81
PID 4132 wrote to memory of 412	4132	2024-06-12_9113b23a012c26292950b40a9c95a479_cryptolocker.exe	81

C:\Users\Admin\AppData\Local\Temp\2024-06-12_9113b23a012c26292950b40a9c95a479_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-12_9113b23a012c26292950b40a9c95a479_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4132
- C:\Users\Admin\AppData\Local\Temp\hurok.exe
  "C:\Users\Admin\AppData\Local\Temp\hurok.exe"
  2⤵
  - Executes dropped EXE
  PID:412

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
39KB

MD5
b3dba12956efd9f1fb1e3b69697d8d10

SHA1
0daff41ac4ce225218c1aac604691cfbdf9bffd0

SHA256
60eec9831ba7df343b24c1bb0a3dae08248bf75b4b211e203cd78c58b3cdefc2

SHA512
439f7252cba76f09c9df38b414f9e3f0aa4c671c8f05b8edeb691657c04f7e86453cef27769b3869307b2a3da3a41f6177f7bc7550c6f1207bc98be90e127e48

Download Submit
memory/412-25-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/4132-0-0x0000000002040000-0x0000000002046000-memory.dmp

Filesize
24KB

Download
memory/4132-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4132-8-0x0000000002040000-0x0000000002046000-memory.dmp

Filesize
24KB

Download