8f34f841be9629c65affb4618224497cd18a04d2a0d8265df7c0ccd9243ea81f

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, 19:24

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General

Target

2024-06-14_1d058408c9a99bb081a612ad56f383b6_cryptolocker.exe
Size

42KB
MD5

1d058408c9a99bb081a612ad56f383b6
SHA1

b2a76eca1f341a7a09b3d2b7ed5ff1deacb7e94b
SHA256

8f34f841be9629c65affb4618224497cd18a04d2a0d8265df7c0ccd9243ea81f
SHA512

02e8114872a16882e95720f698708f7b76729cb00a85c47cefbd71234283e0b9f8b01898318342b207cb9173d2c13ae0965f01854c94baba6d1c35bcfdbc658f
SSDEEP

768:bCDOw9UiaKHfjnD0S16avdrQFiLjJvtAg:bCDOw9aMDooc+vAg

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/4724-0-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0008000000022f51-13.dat	CryptoLocker_rule2
behavioral2/memory/2476-17-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4724-25-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2476-27-0x0000000008000000-0x000000000800A000-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	2024-06-14_1d058408c9a99bb081a612ad56f383b6_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2476	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 4724 wrote to memory of 2476	4724	2024-06-14_1d058408c9a99bb081a612ad56f383b6_cryptolocker.exe	81
PID 4724 wrote to memory of 2476	4724	2024-06-14_1d058408c9a99bb081a612ad56f383b6_cryptolocker.exe	81
PID 4724 wrote to memory of 2476	4724	2024-06-14_1d058408c9a99bb081a612ad56f383b6_cryptolocker.exe	81

C:\Users\Admin\AppData\Local\Temp\2024-06-14_1d058408c9a99bb081a612ad56f383b6_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-14_1d058408c9a99bb081a612ad56f383b6_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4724
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  PID:2476

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
42KB

MD5
b77cfdf6270141c07187ba65a9fdaa9b

SHA1
ff89f681aa5d32eedfc4ca2eaffb3dd833b6162a

SHA256
c48f1462a4a29cdd23f8c79105c5450a95bdfd9c09ff087434e25dd62a80fe27

SHA512
9619fdeadc43e2a02a1de8014798d0645ff342b276957172b8dbbb88d03ec897d85c12785e22a011de8160ac3e9670fce964c54717d9b2edc6c6faada46bb87e

Download Submit
memory/2476-17-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/2476-19-0x00000000005B0000-0x00000000005B6000-memory.dmp

Filesize
24KB

Download
memory/2476-26-0x0000000000590000-0x0000000000596000-memory.dmp

Filesize
24KB

Download
memory/2476-27-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/4724-0-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/4724-1-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/4724-2-0x00000000005C0000-0x00000000005C6000-memory.dmp

Filesize
24KB

Download
memory/4724-9-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/4724-25-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download