553ae1b418199f5c21ee4c7533043de2add0edad3ed271dcfbb137cb0cf35e21

Analysis

max time kernel
150s
max time network
147s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
05/03/2024, 21:32

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General

Target

2024-03-05_41e1899ad2339a6b7aab49214515421d_cryptolocker.exe
Size

53KB
MD5

41e1899ad2339a6b7aab49214515421d
SHA1

d8317f4995ff72be638c5d32ef81d700ac6b5f06
SHA256

553ae1b418199f5c21ee4c7533043de2add0edad3ed271dcfbb137cb0cf35e21
SHA512

3a8459bfff195606bb2da0da5b3dce109eafdaa67fe667e279bb217097b09f88186bbfbeaa1cc805600282c211bc2c9c11eb70001168c2088ce5cf8a65a04214
SSDEEP

768:bIDOw9UiaCHfjnE0Sfa7ilR0p9u6p4ICNBCXK9XbTbmhTyms:bIDOw9a0DwitDZzcT2s

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000001e59e-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-1-5-21-399997616-3400990511-967324271-1000\Control Panel\International\Geo\Nation	2024-03-05_41e1899ad2339a6b7aab49214515421d_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4664	lossy.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 3620 wrote to memory of 4664	3620	2024-03-05_41e1899ad2339a6b7aab49214515421d_cryptolocker.exe	87
PID 3620 wrote to memory of 4664	3620	2024-03-05_41e1899ad2339a6b7aab49214515421d_cryptolocker.exe	87
PID 3620 wrote to memory of 4664	3620	2024-03-05_41e1899ad2339a6b7aab49214515421d_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-03-05_41e1899ad2339a6b7aab49214515421d_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-05_41e1899ad2339a6b7aab49214515421d_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3620
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  PID:4664

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\lossy.exe

Filesize
54KB

MD5
00de1b62308bc5b403bdb92213aa531b

SHA1
a1eb6534c275f4782195ec76bac27ff3e05ab373

SHA256
6d2409b6b4b1ee2ea2b6bf12b53c1f92409ec4ba7af44e7621a7cf789c274519

SHA512
c136900e49fbb97b61bb582f2ea654d6cdce6b36007261803a47e6fd956b7fcfe2768dcfbd840a7e3580ef0b1232b5d73f8a7d24bf7438d480aaa987bf0f6c78

Download Submit
memory/3620-0-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/3620-1-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/3620-2-0x0000000002060000-0x0000000002066000-memory.dmp

Filesize
24KB

Download
memory/4664-17-0x0000000000500000-0x0000000000506000-memory.dmp

Filesize
24KB

Download
memory/4664-23-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download