ada65f3f2d392cd24cb2dc2dc126f9cab1e3e443579f262803b34c02c8c9b450

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
03/06/2024, 07:49

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General

Target

2024-06-03_ac08ce33eef3f89f0009cd3158082be9_cryptolocker.exe
Size

43KB
MD5

ac08ce33eef3f89f0009cd3158082be9
SHA1

e6a9c715546847271d3898601eda520e6f5ddccd
SHA256

ada65f3f2d392cd24cb2dc2dc126f9cab1e3e443579f262803b34c02c8c9b450
SHA512

4896cd80b84601cd0ee07d3ebd0b7e43c9103b04f4ea938893d8540b98d2dd42874207050caef1fd3f232373534d698b5583e1c62011fa5efeeacd190d66c15b
SSDEEP

768:bCDOw9UiaKHfjnD0S16avdrQFiLjJvtAH/m:bCDOw9aMDooc+vAfm

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/4820-0-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0009000000023358-13.dat	CryptoLocker_rule2
behavioral2/memory/684-16-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4820-18-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/684-27-0x0000000008000000-0x000000000800A000-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-1-5-21-540404634-651139247-2967210625-1000\Control Panel\International\Geo\Nation	2024-06-03_ac08ce33eef3f89f0009cd3158082be9_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
684	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 4820 wrote to memory of 684	4820	2024-06-03_ac08ce33eef3f89f0009cd3158082be9_cryptolocker.exe	84
PID 4820 wrote to memory of 684	4820	2024-06-03_ac08ce33eef3f89f0009cd3158082be9_cryptolocker.exe	84
PID 4820 wrote to memory of 684	4820	2024-06-03_ac08ce33eef3f89f0009cd3158082be9_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-06-03_ac08ce33eef3f89f0009cd3158082be9_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-03_ac08ce33eef3f89f0009cd3158082be9_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4820
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  PID:684

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
fabd86b928d663bb748693b3802e0845

SHA1
c0e775feb2f36bd486101422b35834d7d1dc8b07

SHA256
ca1d9f4cbb8b9b2e0f3aba0b4262c1854e811667d695a7d88a47949e17c6cf36

SHA512
c426e2b46973600e3bc4995f52ca19b730ce62030320492845037d6041f3d138ce0674a573680d2b639dca03b18de4179abc651115e3a2e57263570844be29ba

Download Submit
memory/684-16-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/684-20-0x0000000001FF0000-0x0000000001FF6000-memory.dmp

Filesize
24KB

Download
memory/684-26-0x0000000001FC0000-0x0000000001FC6000-memory.dmp

Filesize
24KB

Download
memory/684-27-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/4820-0-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/4820-1-0x00000000005C0000-0x00000000005C6000-memory.dmp

Filesize
24KB

Download
memory/4820-2-0x0000000002060000-0x0000000002066000-memory.dmp

Filesize
24KB

Download
memory/4820-9-0x00000000005C0000-0x00000000005C6000-memory.dmp

Filesize
24KB

Download
memory/4820-18-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download