d61e888cf0c380edbfc966624e96c9bdcb1620f072efc6159dd038f5ff7cc1a0

Analysis

max time kernel
150s
max time network
147s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
28/05/2024, 02:28

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General

Target

2024-05-28_1f60b2a052332bf1590e6c4453d11a24_cryptolocker.exe
Size

43KB
MD5

1f60b2a052332bf1590e6c4453d11a24
SHA1

c7c434ae175280cf1ba39f756882ad8db7f2b97a
SHA256

d61e888cf0c380edbfc966624e96c9bdcb1620f072efc6159dd038f5ff7cc1a0
SHA512

3a2bc14b9ee575878a360c10ba85da84acb051a01eef235f17989ee2a9ecb1a9355294d95bb6ccb50c66db76ef8dc46e8d5528a21fb6c5d79d8dafaf0843ace4
SSDEEP

768:bCDOw9UiaKHfjnD0S16avdrQFiLjJvtAQ:bCDOw9aMDooc+vAQ

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/224-0-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000700000002328e-13.dat	CryptoLocker_rule2
behavioral2/memory/224-17-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3468-18-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3468-27-0x0000000008000000-0x000000000800A000-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-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation	2024-05-28_1f60b2a052332bf1590e6c4453d11a24_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3468	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 224 wrote to memory of 3468	224	2024-05-28_1f60b2a052332bf1590e6c4453d11a24_cryptolocker.exe	83
PID 224 wrote to memory of 3468	224	2024-05-28_1f60b2a052332bf1590e6c4453d11a24_cryptolocker.exe	83
PID 224 wrote to memory of 3468	224	2024-05-28_1f60b2a052332bf1590e6c4453d11a24_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-05-28_1f60b2a052332bf1590e6c4453d11a24_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-28_1f60b2a052332bf1590e6c4453d11a24_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:224
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  PID:3468

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
43KB

MD5
b929b15e5709361d25d6fd49ec9a6dfc

SHA1
46cbcb9952e8e5db1c488197e081ec793b669de7

SHA256
51a61ac6e6cc5f3166a47d5d5e44d8fc744ed00f850488a0aa8c6090eed202e7

SHA512
c92a67d294d211532e3d4b014b4b3731856f710619b127b0f00f3594d77d195d13869848de12326737ca19c2c44276b0e6d5227b5f149a76847056d4eb5912ce

Download Submit
memory/224-0-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/224-1-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/224-2-0x00000000005C0000-0x00000000005C6000-memory.dmp

Filesize
24KB

Download
memory/224-8-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/224-17-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/3468-18-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/3468-20-0x0000000001FE0000-0x0000000001FE6000-memory.dmp

Filesize
24KB

Download
memory/3468-26-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/3468-27-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download