f8470599a8954ae9f4c6b57216a54684717fb75976e337c7e09184149aabda48

Analysis

max time kernel
150s
max time network
147s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
09/05/2024, 20:24

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General

Target

2024-05-09_3e8595398981d26624de50765fe40928_cryptolocker.exe
Size

31KB
MD5

3e8595398981d26624de50765fe40928
SHA1

be14c15906804a6e8ef58f126799cb6aef04e6f7
SHA256

f8470599a8954ae9f4c6b57216a54684717fb75976e337c7e09184149aabda48
SHA512

fb0add0bb9669e04ac3500718720fa0c7f749af81a182531801ba9ed243b2eb4fec8b1de571c07383992dcc9ad4355cea175f7ed1210af4ac7ae3e2be0a0db23
SSDEEP

384:bG74uGLLQRcsdeQ72ngEr4K7YmE8j60nrlwfjDUGTGOT:bG74zYcgT/Ekd0ryfjp

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/1020-0-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0008000000022f51-13.dat	CryptoLocker_rule2
behavioral2/memory/3164-17-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1020-18-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3164-27-0x0000000008000000-0x000000000800A000-memory.dmp	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-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation	2024-05-09_3e8595398981d26624de50765fe40928_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3164	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 1020 wrote to memory of 3164	1020	2024-05-09_3e8595398981d26624de50765fe40928_cryptolocker.exe	81
PID 1020 wrote to memory of 3164	1020	2024-05-09_3e8595398981d26624de50765fe40928_cryptolocker.exe	81
PID 1020 wrote to memory of 3164	1020	2024-05-09_3e8595398981d26624de50765fe40928_cryptolocker.exe	81

C:\Users\Admin\AppData\Local\Temp\2024-05-09_3e8595398981d26624de50765fe40928_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-09_3e8595398981d26624de50765fe40928_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1020
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:3164

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
32KB

MD5
602568f58d3c323fe6d8120f9a8c4a7f

SHA1
d65d9964757eec910157b062c0e673f97a88737e

SHA256
dbf4e3d542ceaf74366389dcb8cefe4daac567365e3fa0aaca99fdabf28fe1c8

SHA512
8938354552c8311338f5029174dcbbbcdd27c547eaa8e654bf22655fc0d1f7cb472b7dab2fffcca16673ca5e050223382fb184d4004058b85f5ff319c4530a49

Download Submit
memory/1020-0-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/1020-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/1020-2-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download
memory/1020-9-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/1020-18-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/3164-17-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/3164-26-0x0000000002250000-0x0000000002256000-memory.dmp

Filesize
24KB

Download
memory/3164-27-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download