0b4ce3786d7d9f20959dbf6fe829f381577cd1bccebfb6ec388dc281d9781939

Analysis

max time kernel
150s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
24/05/2024, 12:57

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General

Target

2024-05-24_e0d511f7fd9f70d49c795034cde00e98_cryptolocker.exe
Size

41KB
MD5

e0d511f7fd9f70d49c795034cde00e98
SHA1

48f85cd4ac4449173b7e9039563c6f65fbd03109
SHA256

0b4ce3786d7d9f20959dbf6fe829f381577cd1bccebfb6ec388dc281d9781939
SHA512

6801785d99bbaa2c96aa60389e664326cf4ad9a0afb9aea1f5d790ca5261cde3ed933f99ea00d1b2a424503c8ce0a946a9009b4065c20c754f9d7b278556d450
SSDEEP

768:bCDOw9UiaKHfjnD0S16avdrQFiLjJvtAn7n:bCDOw9aMDooc+vA7n

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/1992-0-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0008000000022f51-13.dat	CryptoLocker_rule2
behavioral2/memory/112-17-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1992-18-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/112-27-0x0000000008000000-0x000000000800A000-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	2024-05-24_e0d511f7fd9f70d49c795034cde00e98_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
112	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 1992 wrote to memory of 112	1992	2024-05-24_e0d511f7fd9f70d49c795034cde00e98_cryptolocker.exe	83
PID 1992 wrote to memory of 112	1992	2024-05-24_e0d511f7fd9f70d49c795034cde00e98_cryptolocker.exe	83
PID 1992 wrote to memory of 112	1992	2024-05-24_e0d511f7fd9f70d49c795034cde00e98_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-05-24_e0d511f7fd9f70d49c795034cde00e98_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-24_e0d511f7fd9f70d49c795034cde00e98_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1992
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  PID:112

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
33bc75e6f9d1339a9a05e188abe6b8b4

SHA1
89565b8096b88be9a71ea9eb90b4c78aa1323b7a

SHA256
b4a5319a50341ba428ed3c07892a72b46d85fafb3cbe0f7034ecf594aa025269

SHA512
cd8396e25aa76931e5fc94ff75211cc15cc4558051ed4176289759be5aa3a93a7d6405c7064b9a1817e6b7aed73a7d79268e0a786a16ee3d6eb38de9d45e328e

Download Submit
memory/112-17-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/112-21-0x00000000020F0000-0x00000000020F6000-memory.dmp

Filesize
24KB

Download
memory/112-20-0x0000000000630000-0x0000000000636000-memory.dmp

Filesize
24KB

Download
memory/112-27-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/1992-0-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/1992-1-0x00000000021C0000-0x00000000021C6000-memory.dmp

Filesize
24KB

Download
memory/1992-2-0x0000000002040000-0x0000000002046000-memory.dmp

Filesize
24KB

Download
memory/1992-9-0x00000000021C0000-0x00000000021C6000-memory.dmp

Filesize
24KB

Download
memory/1992-18-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download