6ee13840a2ba1a4e50f0893de2e38ca9917e063a3e017d2b7eadd9b1d8d2dfc8

Analysis

max time kernel
150s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
22/04/2024, 13:14

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-04-22_d64cef627eef93fa68a457b964a82c65_cryptolocker.exe
Size

102KB
MD5

d64cef627eef93fa68a457b964a82c65
SHA1

d678e11b7162bce06a0eb16d9156564d32bd4b48
SHA256

6ee13840a2ba1a4e50f0893de2e38ca9917e063a3e017d2b7eadd9b1d8d2dfc8
SHA512

b296331ae93f13c480571ece666e94c81aec18033efe9e31b6692d782d9650c7093bd33d75386100af5eec2b318083f8334e742eb6ae7f2c5a9b38c03be9e9e2
SSDEEP

768:XS5nQJ24LR1bytOOtEvwDpjNbZ7uyA36S7MpxRiWjzUNu5e/J:i5nkFGMOtEvwDpjNbwQEIikgNZJ

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/1976-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000300000001e97a-13.dat	CryptoLocker_rule2
behavioral2/memory/1976-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2884-26-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 2 IoCs

resource	yara_rule
behavioral2/memory/1976-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/2884-26-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 4 IoCs

resource	yara_rule
behavioral2/memory/1976-0-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/files/0x000300000001e97a-13.dat	INDICATOR_EXE_Packed_MPress
behavioral2/memory/1976-17-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/2884-26-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress

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-1-5-21-2288054676-1871194608-3559553667-1000\Control Panel\International\Geo\Nation	2024-04-22_d64cef627eef93fa68a457b964a82c65_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2884	misid.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 1976 wrote to memory of 2884	1976	2024-04-22_d64cef627eef93fa68a457b964a82c65_cryptolocker.exe	86
PID 1976 wrote to memory of 2884	1976	2024-04-22_d64cef627eef93fa68a457b964a82c65_cryptolocker.exe	86
PID 1976 wrote to memory of 2884	1976	2024-04-22_d64cef627eef93fa68a457b964a82c65_cryptolocker.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-04-22_d64cef627eef93fa68a457b964a82c65_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-22_d64cef627eef93fa68a457b964a82c65_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1976
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:2884

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

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\misid.exe

Filesize
102KB

MD5
863ba35fafd98cd52188cff0b5f79e03

SHA1
84b3c9240efe5885548426bb6d3a72b69d8079a3

SHA256
fa3b7876ed81dd4f76be7a0bfe8bbf8ea707b41f795596270ce25c5bd883b8df

SHA512
7b042d818a2bfe2e0b7cd6d1f802bd1f821940daef9884fc1e324f0c5288f83efc7cd01d8d8c69804ec5df562a7dd5fb8f549d62a9e58f13bb34849b5e0ce5ad

Download Submit
memory/1976-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1976-1-0x0000000002050000-0x0000000002056000-memory.dmp

Filesize
24KB

Download
memory/1976-2-0x0000000002050000-0x0000000002056000-memory.dmp

Filesize
24KB

Download
memory/1976-3-0x0000000002070000-0x0000000002076000-memory.dmp

Filesize
24KB

Download
memory/1976-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2884-19-0x00000000006E0000-0x00000000006E6000-memory.dmp

Filesize
24KB

Download
memory/2884-23-0x0000000000490000-0x0000000000496000-memory.dmp

Filesize
24KB

Download
memory/2884-26-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download