a4d3d1702df4d3910c0235627d548b28e52b1ea244e43e4b5e5d5911e99e8b5c

Analysis

max time kernel
150s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
13-05-2024 18:25

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-05-13_50662dab55b0c1f8ea26da63dab254f0_cryptolocker.exe
Size

43KB
MD5

50662dab55b0c1f8ea26da63dab254f0
SHA1

6b4a0e7330447181cc7fd855682a78306dbcb9d2
SHA256

a4d3d1702df4d3910c0235627d548b28e52b1ea244e43e4b5e5d5911e99e8b5c
SHA512

4ed7e1c7159e1988c29943df38c373d5c4be3cc31f575d71bd1306237472876107c5a169243877771bc6e5473aa73e805c5f71687ec3b112635639fbc3984b04
SSDEEP

384:bm74uGLLQRcsdeQ72ngEr4K7YmE8uYo0nrlwfjDUOR:bm74zYcgT/Ek70ryfjxR

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/2940-0-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0007000000023298-13.dat	CryptoLocker_rule2
behavioral2/memory/2940-18-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4064-17-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4064-27-0x0000000008000000-0x000000000800D000-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-1-5-21-1162180587-977231257-2194346871-1000\Control Panel\International\Geo\Nation	2024-05-13_50662dab55b0c1f8ea26da63dab254f0_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4064	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 2940 wrote to memory of 4064	2940	2024-05-13_50662dab55b0c1f8ea26da63dab254f0_cryptolocker.exe	84
PID 2940 wrote to memory of 4064	2940	2024-05-13_50662dab55b0c1f8ea26da63dab254f0_cryptolocker.exe	84
PID 2940 wrote to memory of 4064	2940	2024-05-13_50662dab55b0c1f8ea26da63dab254f0_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-05-13_50662dab55b0c1f8ea26da63dab254f0_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-13_50662dab55b0c1f8ea26da63dab254f0_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2940
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:4064

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

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\hasfj.exe

Filesize
43KB

MD5
93ffc321249d225a34832e671c44ec71

SHA1
2661f146c6c8d7541db7d41d95d88b75ee1323cb

SHA256
46ebfe5071fac6ec20e07886f6f0f80ebe117c73d26812fec1452aa2c2e3bd45

SHA512
1ce5ddadf78b3388671b91032943adffca5d2a5a1a699d73e20cb4d0155c9cb2af14f9ccd2a6675e562567419e0c8b445e51749aea5980ddc97b20260f3522f2

Download Submit
memory/2940-0-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/2940-1-0x0000000002160000-0x0000000002166000-memory.dmp

Filesize
24KB

Download
memory/2940-2-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download
memory/2940-9-0x0000000002160000-0x0000000002166000-memory.dmp

Filesize
24KB

Download
memory/2940-18-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/4064-17-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/4064-20-0x0000000003010000-0x0000000003016000-memory.dmp

Filesize
24KB

Download
memory/4064-26-0x0000000002D60000-0x0000000002D66000-memory.dmp

Filesize
24KB

Download
memory/4064-27-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download