1eb3701b01193c3ae359e00424d927f35a9e956cdb0b8cc9bc5081161f2cd517

Analysis

max time kernel
143s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
12/02/2024, 03:29

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General

Target

2024-02-12_059eaef3399f06c2266b5c0f050e8b98_cryptolocker.exe
Size

61KB
MD5

059eaef3399f06c2266b5c0f050e8b98
SHA1

4b98a445073fdede0b6d39d9fe00959fd73a977d
SHA256

1eb3701b01193c3ae359e00424d927f35a9e956cdb0b8cc9bc5081161f2cd517
SHA512

f662a6d4118cc6c00ed66ce4ef14b3c28a6197895e3db1cdba8d3fb2e2b29cedf292c62d0c3868699986c686d5cf236869722b6d370417c838e889c16803e4ac
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszudnYTjipvF299o:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7w

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000600000002321d-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000600000002321d-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-1-5-21-983843758-932321429-1636175382-1000\Control Panel\International\Geo\Nation	2024-02-12_059eaef3399f06c2266b5c0f050e8b98_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-983843758-932321429-1636175382-1000\Control Panel\International\Geo\Nation	hurok.exe

Executes dropped EXE 1 IoCs

pid	Process
4508	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 4292 wrote to memory of 4508	4292	2024-02-12_059eaef3399f06c2266b5c0f050e8b98_cryptolocker.exe	84
PID 4292 wrote to memory of 4508	4292	2024-02-12_059eaef3399f06c2266b5c0f050e8b98_cryptolocker.exe	84
PID 4292 wrote to memory of 4508	4292	2024-02-12_059eaef3399f06c2266b5c0f050e8b98_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-02-12_059eaef3399f06c2266b5c0f050e8b98_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-12_059eaef3399f06c2266b5c0f050e8b98_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4292
- 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:4508

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
61KB

MD5
4f5d5afe53c38ba9368f96f0fc13e666

SHA1
1840bacd7ed173391d6ca32b59b848d00f44051a

SHA256
4809e58c148d4ca647b1afb8bcaa8fd9755552d788f7496f0e4b519601a828e2

SHA512
836be2c64b208d85ace25fff4f58ed825167b884fc6e16bc8d26d7aa064766c2e99a464f9541f60003a37f132b291380b7dda799b9e4206aae72c70867007b62

Download Submit
memory/4292-0-0x0000000002270000-0x0000000002276000-memory.dmp

Filesize
24KB

Download
memory/4292-1-0x0000000002270000-0x0000000002276000-memory.dmp

Filesize
24KB

Download
memory/4292-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4508-22-0x0000000000590000-0x0000000000596000-memory.dmp

Filesize
24KB

Download