70979d8e8c28ab2521ae9e56041b98122203d7e87f208942bfbb9416a6994262

Analysis

max time kernel
147s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240221-en
resource tags

arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
submitted
23/02/2024, 18:26

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General

Target

2024-02-23_f14cb4454af5cfa16850fb571416544f_cryptolocker.exe
Size

62KB
MD5

f14cb4454af5cfa16850fb571416544f
SHA1

f251a5c88ff8cc92b619af724e2cd2cce40fa6c7
SHA256

70979d8e8c28ab2521ae9e56041b98122203d7e87f208942bfbb9416a6994262
SHA512

01c153fdc63156814b97a9093bc4e9f28f3a3d90c35ee48001769ea652598743f2aa1aa7870c9f8a86246c3b14569b9ab9319ed1379a21823a21158dbc060aa4
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszudnYTjipvF299lK:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7U

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00040000000006e1-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x00040000000006e1-12.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-1-5-21-2200714112-3788720386-2559682836-1000\Control Panel\International\Geo\Nation	hurok.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2200714112-3788720386-2559682836-1000\Control Panel\International\Geo\Nation	2024-02-23_f14cb4454af5cfa16850fb571416544f_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
748	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 4492 wrote to memory of 748	4492	2024-02-23_f14cb4454af5cfa16850fb571416544f_cryptolocker.exe	91
PID 4492 wrote to memory of 748	4492	2024-02-23_f14cb4454af5cfa16850fb571416544f_cryptolocker.exe	91
PID 4492 wrote to memory of 748	4492	2024-02-23_f14cb4454af5cfa16850fb571416544f_cryptolocker.exe	91

C:\Users\Admin\AppData\Local\Temp\2024-02-23_f14cb4454af5cfa16850fb571416544f_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-23_f14cb4454af5cfa16850fb571416544f_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4492
- 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:748

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
62KB

MD5
dd6b7cfbf1286f28377b1bd0d8eb0bcb

SHA1
75de4ab74ff88b29889c93ab6454d7e6f4e3d25a

SHA256
3e250d457d66ff3f72c66d7c1d8245ed6da40f0612ce433608d98e035b440fb2

SHA512
9f36233753dfd25604e4024387c7cab7f748a0f8f147b50ff45ff655254bc1cb2f1e55dd8ad1717b2ac0b9a2c2e35b4b52c83d3935f4adf7d4846cdbab01b321

Download Submit
memory/748-20-0x0000000000590000-0x0000000000596000-memory.dmp

Filesize
24KB

Download
memory/4492-0-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/4492-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/4492-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download