03f3cdce05a4cffd51cd1e2693e0bc73050db55f83670d8af52293c9bbe651a0

Analysis

max time kernel
130s
max time network
125s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
28/05/2024, 02:44

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General

Target

2024-05-28_af29ba829cfe507cb20d3fe4a6495908_cryptolocker.exe
Size

54KB
MD5

af29ba829cfe507cb20d3fe4a6495908
SHA1

d4c109f8cd092b15d1079f3752c78464fb9e412e
SHA256

03f3cdce05a4cffd51cd1e2693e0bc73050db55f83670d8af52293c9bbe651a0
SHA512

aeb859538207d1dcbbe8045d48c9bb0d6ec10a7d6b27b8fe58769f3a6f35550e8848bc912d78e2c9ffc210763c1bdb67f0a2c965e7fedb7853cd9d818abca6c6
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszsbKY1xzpAIX6Ex:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7I

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000a000000023400-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000a000000023400-12.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-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation	2024-05-28_af29ba829cfe507cb20d3fe4a6495908_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation	hurok.exe

Executes dropped EXE 1 IoCs

pid	Process
620	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 2524 wrote to memory of 620	2524	2024-05-28_af29ba829cfe507cb20d3fe4a6495908_cryptolocker.exe	83
PID 2524 wrote to memory of 620	2524	2024-05-28_af29ba829cfe507cb20d3fe4a6495908_cryptolocker.exe	83
PID 2524 wrote to memory of 620	2524	2024-05-28_af29ba829cfe507cb20d3fe4a6495908_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-05-28_af29ba829cfe507cb20d3fe4a6495908_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-28_af29ba829cfe507cb20d3fe4a6495908_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2524
- 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:620

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
54KB

MD5
bb171a4e86116185128c5b5001828fe8

SHA1
26fc2a477fb7498ba0d5e6a6d6d1b1bffb231381

SHA256
3d054b1e429333bfa864e81d81ab1561661d50650dc331fc4b9b6cc887b08ab9

SHA512
8cac73b7c1d68af2bdf7ca59a7e4af30af0f3f1e6f580c3911b7c287544982e6a0262c24ad250a27fecfd331a59bceabc40182e4182107e8235d481aa1a7c19b

Download Submit
memory/620-25-0x0000000000550000-0x0000000000556000-memory.dmp

Filesize
24KB

Download
memory/2524-0-0x0000000002040000-0x0000000002046000-memory.dmp

Filesize
24KB

Download
memory/2524-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2524-8-0x0000000002040000-0x0000000002046000-memory.dmp

Filesize
24KB

Download