7bf11240e354ae0f5bd728145031adf26285800071aec8274df1f4c8fe9910e7

Analysis

max time kernel
150s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
28/04/2024, 05:23

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General

Target

2024-04-28_056d073f5a9609291cc162e1cab74478_cryptolocker.exe
Size

41KB
MD5

056d073f5a9609291cc162e1cab74478
SHA1

a125d97c3b26acabb553c3694a50ff30061518f0
SHA256

7bf11240e354ae0f5bd728145031adf26285800071aec8274df1f4c8fe9910e7
SHA512

672046a09e8f489b025753ef0f0387e2ff26cafdd1b2f2311029fdee7e79e6cab51ef9db8d95006932094d54614a28faf2a02d1ef4b11ba94d0722c5860314b3
SSDEEP

768:bCDOw9UiaKHfjnD0S16avdrQFiLjJvtAg:bCDOw9aMDooc+vAg

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/3172-0-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0007000000023298-13.dat	CryptoLocker_rule2
behavioral2/memory/3172-16-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1336-18-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1336-27-0x0000000008000000-0x000000000800A000-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-1-5-21-1162180587-977231257-2194346871-1000\Control Panel\International\Geo\Nation	2024-04-28_056d073f5a9609291cc162e1cab74478_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1336	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 3172 wrote to memory of 1336	3172	2024-04-28_056d073f5a9609291cc162e1cab74478_cryptolocker.exe	85
PID 3172 wrote to memory of 1336	3172	2024-04-28_056d073f5a9609291cc162e1cab74478_cryptolocker.exe	85
PID 3172 wrote to memory of 1336	3172	2024-04-28_056d073f5a9609291cc162e1cab74478_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-04-28_056d073f5a9609291cc162e1cab74478_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-28_056d073f5a9609291cc162e1cab74478_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3172
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  PID:1336

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
41KB

MD5
fe88f0c03094f17170bb4bf071532f95

SHA1
aba01f3c4cf8ebee8b099a7fb136c15123179eb2

SHA256
b6a5b8945b26cf86527bef6e4ad7fe12356a58938bf8691fc618a3104e3a8921

SHA512
142b28f349a542e94321652de5bb5640de72ee8c09cbaa487766e0c84172d30975cf255a29bb7362ed2e7e041a393e771e2aaa1cc377e0f50f533218dd753220

Download Submit
memory/1336-18-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/1336-20-0x00000000020F0000-0x00000000020F6000-memory.dmp

Filesize
24KB

Download
memory/1336-26-0x00000000020C0000-0x00000000020C6000-memory.dmp

Filesize
24KB

Download
memory/1336-27-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/3172-0-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/3172-1-0x0000000001F40000-0x0000000001F46000-memory.dmp

Filesize
24KB

Download
memory/3172-2-0x0000000001F60000-0x0000000001F66000-memory.dmp

Filesize
24KB

Download
memory/3172-9-0x0000000001F40000-0x0000000001F46000-memory.dmp

Filesize
24KB

Download
memory/3172-16-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download