32f92ab4210d4410375571ea1f3768feb26937d2db97ab2ce921aad4ab7904d4

Analysis

max time kernel
150s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
09/05/2024, 07:21

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General

Target

2024-05-09_041215a66fb7b29cc1e201caeca905d8_cryptolocker.exe
Size

42KB
MD5

041215a66fb7b29cc1e201caeca905d8
SHA1

2c00ff022a69e8c6d5f210638ea7274550c7b4a0
SHA256

32f92ab4210d4410375571ea1f3768feb26937d2db97ab2ce921aad4ab7904d4
SHA512

c56b3f5a274500a6adfb6834f89fba7f6b3029c4b6fdc9d73c1115bdf5a6d833e6a0c2fb8a1d0251cb208f5307524f710f447a4d1dd3d3190e15d66a4b9df9db
SSDEEP

768:bCDOw9UiaKHfjnD0S16avdrQFiLjJvtAIr:bCDOw9aMDooc+vA6

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/2356-0-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000500000002326f-13.dat	CryptoLocker_rule2
behavioral2/memory/3808-16-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2356-17-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3808-27-0x0000000008000000-0x000000000800A000-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	2024-05-09_041215a66fb7b29cc1e201caeca905d8_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3808	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 2356 wrote to memory of 3808	2356	2024-05-09_041215a66fb7b29cc1e201caeca905d8_cryptolocker.exe	80
PID 2356 wrote to memory of 3808	2356	2024-05-09_041215a66fb7b29cc1e201caeca905d8_cryptolocker.exe	80
PID 2356 wrote to memory of 3808	2356	2024-05-09_041215a66fb7b29cc1e201caeca905d8_cryptolocker.exe	80

C:\Users\Admin\AppData\Local\Temp\2024-05-09_041215a66fb7b29cc1e201caeca905d8_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-09_041215a66fb7b29cc1e201caeca905d8_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2356
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  PID:3808

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
212a2b1a1e62a5d39ea62537cde9cd4c

SHA1
dd1286c16d3de0638be2370445e65c8093fdf3e2

SHA256
6e9da96ef0eb8e2b7c3ec2f1f1ed5a0959a9efc8364e90cb80c21c464133ae24

SHA512
427c6eb5fae9b975b50fa0575ad71ecb0a07f58496b73fcba6584bf1506c045d64520259e9ee1fc7eb2f55f43db28c07dca0266e75f813f0256914941306e019

Download Submit
memory/2356-0-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/2356-1-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/2356-2-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/2356-3-0x00000000005C0000-0x00000000005C6000-memory.dmp

Filesize
24KB

Download
memory/2356-17-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/3808-16-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/3808-26-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/3808-20-0x0000000000500000-0x0000000000506000-memory.dmp

Filesize
24KB

Download
memory/3808-27-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download