781b04bc37cca57738860b30e24eae1a77f93634c0f857cca76ca5c96393783e

Analysis

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

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
14/06/2024, 14:33

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General

Target

2024-06-14_46d6f58b5e0c4b2fae80f0ef98ae2527_cryptolocker.exe
Size

34KB
MD5

46d6f58b5e0c4b2fae80f0ef98ae2527
SHA1

b5fe28d9d5f4e31715affd8a792814edcfe8909e
SHA256

781b04bc37cca57738860b30e24eae1a77f93634c0f857cca76ca5c96393783e
SHA512

b286c9918015b66f2bf46462400c6f6bc1ca6d82447c465a4189c844f2fdadf9b4473a04ee70fdf4764917f6e54f09ccbdafcf348eb5b23f9e9979ed54346fa6
SSDEEP

384:bG74uGLLQRcsdeQ72ngEr4K7YmE8j60nrlwfjDUGTGXvJF3J:bG74zYcgT/Ekd0ryfjkb5

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/3016-0-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000a0000000233d8-13.dat	CryptoLocker_rule2
behavioral2/memory/3016-17-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3928-18-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3928-27-0x0000000008000000-0x000000000800A000-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-1-5-21-2539840389-1261165778-1087677076-1000\Control Panel\International\Geo\Nation	2024-06-14_46d6f58b5e0c4b2fae80f0ef98ae2527_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3928	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 3016 wrote to memory of 3928	3016	2024-06-14_46d6f58b5e0c4b2fae80f0ef98ae2527_cryptolocker.exe	80
PID 3016 wrote to memory of 3928	3016	2024-06-14_46d6f58b5e0c4b2fae80f0ef98ae2527_cryptolocker.exe	80
PID 3016 wrote to memory of 3928	3016	2024-06-14_46d6f58b5e0c4b2fae80f0ef98ae2527_cryptolocker.exe	80

C:\Users\Admin\AppData\Local\Temp\2024-06-14_46d6f58b5e0c4b2fae80f0ef98ae2527_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-14_46d6f58b5e0c4b2fae80f0ef98ae2527_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3016
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:3928

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
34KB

MD5
53df183427fbb81fd750509ae581a9b4

SHA1
4f4b8b1aee88b2b12a63c03d9f2015361c92f5d3

SHA256
5ff47073ef50d2ffdda59b5e79312a32135b2178188e9c79dabf87a6964de97c

SHA512
2ca6e1d41c68e68cc59cc2552678b01a1f7d5a3d87e32461afa386c33cf1eb7479d04ccb9af1e27536864ab7e0945d30bd1a90a36e3481374eb807c84ac89746

Download Submit
memory/3016-0-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/3016-1-0x0000000002160000-0x0000000002166000-memory.dmp

Filesize
24KB

Download
memory/3016-2-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download
memory/3016-9-0x0000000002160000-0x0000000002166000-memory.dmp

Filesize
24KB

Download
memory/3016-17-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/3928-18-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/3928-20-0x0000000003010000-0x0000000003016000-memory.dmp

Filesize
24KB

Download
memory/3928-26-0x00000000020F0000-0x00000000020F6000-memory.dmp

Filesize
24KB

Download
memory/3928-27-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download