90cfac4a8b4a6df729d691b50046ff2b5f3541f8ac380107648774b9002a72f0

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
12/05/2024, 20:23

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General

Target

2024-05-12_33857cdb5609c11f3095cf4653b177a2_cryptolocker.exe
Size

32KB
MD5

33857cdb5609c11f3095cf4653b177a2
SHA1

2048b1614ba611e521de7fe0b9e0c4d5c3d40db9
SHA256

90cfac4a8b4a6df729d691b50046ff2b5f3541f8ac380107648774b9002a72f0
SHA512

3c35715bf94d7593033a2492f5737f155753752bdaec49ed243aff526b877ccb338252da4bb0f83a915acc8ebc8f16d5fc8ccd4d8cac19dbec98998ab08506dd
SSDEEP

384:bG74uGLLQRcsdeQ72ngEr4K7YmE8j60nrlwfjDUGTGQF:bG74zYcgT/Ekd0ryfjrF

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/2664-0-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000d00000002342e-13.dat	CryptoLocker_rule2
behavioral2/memory/1704-17-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2664-18-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1704-27-0x0000000008000000-0x000000000800A000-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	2024-05-12_33857cdb5609c11f3095cf4653b177a2_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1704	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 2664 wrote to memory of 1704	2664	2024-05-12_33857cdb5609c11f3095cf4653b177a2_cryptolocker.exe	82
PID 2664 wrote to memory of 1704	2664	2024-05-12_33857cdb5609c11f3095cf4653b177a2_cryptolocker.exe	82
PID 2664 wrote to memory of 1704	2664	2024-05-12_33857cdb5609c11f3095cf4653b177a2_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-05-12_33857cdb5609c11f3095cf4653b177a2_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-12_33857cdb5609c11f3095cf4653b177a2_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2664
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:1704

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
b45226da4d880a05aff9e749a16f09a8

SHA1
e61c87275a9ebf5b1c91ca4e048276ac9747ae57

SHA256
6554c5871d653615716e498d5b727f8538377a52eda7500656994d8217b62a54

SHA512
b6082c52b83b4a75a642272d244065211879bb526896d06c88da4612567c74d2e23a137450d14c204c3bd568b03a554003d8b276228643c6108adbae71eba72f

Download Submit
memory/1704-17-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/1704-20-0x0000000002190000-0x0000000002196000-memory.dmp

Filesize
24KB

Download
memory/1704-26-0x0000000002090000-0x0000000002096000-memory.dmp

Filesize
24KB

Download
memory/1704-27-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/2664-0-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/2664-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/2664-2-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download
memory/2664-9-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/2664-18-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download