b0c515a6b04f7c83ed5e101d8f08aad311d556b324d5cdb370c94ff7fd42299a

Analysis

max time kernel
150s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
01/02/2024, 20:16

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General

Target

2024-02-01_fcbfc0422a0f4eef7adc8f675f240cc0_cryptolocker.exe
Size

384KB
MD5

fcbfc0422a0f4eef7adc8f675f240cc0
SHA1

456fe60ad24898bc3b61a876ff4e097355daa3ec
SHA256

b0c515a6b04f7c83ed5e101d8f08aad311d556b324d5cdb370c94ff7fd42299a
SHA512

babf0aa80fc27c73b51cb1abb156f4182b2606d14bf87f7cf35c31a68b7fada65cc177affc909e0b6e4a50e1881898ba7dce27c1bdb3843e47acf31bbec6b11d
SSDEEP

6144:nnOsaQgAOjvrZFODJjBz3j1jTqQy6v2GGnugOtihzXO:nnOflT/ZFIjBz3xjTxynGUOUhXO

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023207-12.dat	CryptoLocker_rule2

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-1-5-21-3803511929-1339359695-2191195476-1000\Control Panel\International\Geo\Nation	2024-02-01_fcbfc0422a0f4eef7adc8f675f240cc0_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1968	hasfj.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 100 wrote to memory of 1968	100	2024-02-01_fcbfc0422a0f4eef7adc8f675f240cc0_cryptolocker.exe	89
PID 100 wrote to memory of 1968	100	2024-02-01_fcbfc0422a0f4eef7adc8f675f240cc0_cryptolocker.exe	89
PID 100 wrote to memory of 1968	100	2024-02-01_fcbfc0422a0f4eef7adc8f675f240cc0_cryptolocker.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-02-01_fcbfc0422a0f4eef7adc8f675f240cc0_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-01_fcbfc0422a0f4eef7adc8f675f240cc0_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:100
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:1968

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\hasfj.exe

Filesize
384KB

MD5
13744775da5690adb2e9ae4b6d767242

SHA1
961e9079147d5a4fbf8b86da3b720e48533eb2d7

SHA256
f913d674374bc0414f54e2379c38652a34705e2312da9ec5da7a067df7cb86e0

SHA512
bf8b419bece31d1c568f0c39570e5ed3220f11241265e4f65606852f59598f33ef7b472767ff534365d8dd76e0ab015751738b95ece953dbb431447a1702cbd5

Download Submit
memory/100-0-0x0000000002350000-0x0000000002356000-memory.dmp

Filesize
24KB

Download
memory/100-2-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download
memory/100-1-0x0000000002350000-0x0000000002356000-memory.dmp

Filesize
24KB

Download
memory/1968-17-0x0000000003010000-0x0000000003016000-memory.dmp

Filesize
24KB

Download
memory/1968-18-0x0000000002D60000-0x0000000002D66000-memory.dmp

Filesize
24KB

Download