eef3ceed4cdf50806c8b84d5793b63d913ba67d12e1c0c7c5bbb128e6dccf4d2

Analysis

max time kernel
92s
max time network
123s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
01/06/2024, 19:31

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General

Target

2024-06-01_4053a4eff0224c2fa97e41807f3478be_cryptolocker.exe
Size

53KB
MD5

4053a4eff0224c2fa97e41807f3478be
SHA1

90e5771dd17c5aea92cec8e60bd3bae25bf84a08
SHA256

eef3ceed4cdf50806c8b84d5793b63d913ba67d12e1c0c7c5bbb128e6dccf4d2
SHA512

a61f7ac925739f91e1fab7bdfbee9f843992958239d130df030c7b6036c0656f84f9d5d15b315bec89005a316ee931953b5a4a274f8dac020cc0604b99e8cece
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszsbKY1xzpAI4kP:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7o

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0006000000022fa8-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0006000000022fa8-12.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-1-5-21-3571316656-3665257725-2415531812-1000\Control Panel\International\Geo\Nation	hurok.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3571316656-3665257725-2415531812-1000\Control Panel\International\Geo\Nation	2024-06-01_4053a4eff0224c2fa97e41807f3478be_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4852	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 4688 wrote to memory of 4852	4688	2024-06-01_4053a4eff0224c2fa97e41807f3478be_cryptolocker.exe	83
PID 4688 wrote to memory of 4852	4688	2024-06-01_4053a4eff0224c2fa97e41807f3478be_cryptolocker.exe	83
PID 4688 wrote to memory of 4852	4688	2024-06-01_4053a4eff0224c2fa97e41807f3478be_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-06-01_4053a4eff0224c2fa97e41807f3478be_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-01_4053a4eff0224c2fa97e41807f3478be_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4688
- 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:4852

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
53KB

MD5
df15cdb92ab95899479cfa11d303cc85

SHA1
2cfba5c8b4bef76ce0f9a18466443831fbc816ee

SHA256
55434215b10ff4bcdeb94e4b0884ad92a35b56bb81bd604b692a19959df95a7e

SHA512
fe34858f2bd7833956faac613b1a2c5a0767cddf758f3100ef7b6837d5dc309261afbb88370b39a1d89f2766cae3ff4dc805397a47662280a8f3cc6fafb3fabe

Download Submit
memory/4688-0-0x00000000020C0000-0x00000000020C6000-memory.dmp

Filesize
24KB

Download
memory/4688-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4688-8-0x00000000020C0000-0x00000000020C6000-memory.dmp

Filesize
24KB

Download
memory/4852-25-0x00000000005D0000-0x00000000005D6000-memory.dmp

Filesize
24KB

Download