7f0799ef8791d3b76e85a7427a9eaef61e67152446fddc266c3956c2e8b34c6b

Analysis

max time kernel
11s
max time network
123s
platform
windows7_x64
resource
win7-20240215-en
resource tags

arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
submitted
14/05/2024, 23:29

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target

2024-05-14_db9ac8ff33832978b742904588cf0e54_cryptolocker.exe
Size

41KB
MD5

db9ac8ff33832978b742904588cf0e54
SHA1

7c4b350729cde2fa8e53e215dda095c508e74ca3
SHA256

7f0799ef8791d3b76e85a7427a9eaef61e67152446fddc266c3956c2e8b34c6b
SHA512

6a7673e19c72072a2466d386163eeb762a81ac731fa99347f11cb9b343e2a4858df139aadcbb8999f6ba1f8470e45fb8a43b3ca069bf0330ae9dabcecb223412
SSDEEP

384:bM7Q0pjC4GybxMv01d3AcASBQMf6i/zzzcYgUPSznHzl6AJvDSuYlmoHR8uyn:b/yC4GyNM01GuQMNXw2PSjHPbSuYlZY

Score

9^/10

discovery

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000c00000001315b-13.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2216	retln.exe

Loads dropped DLL 1 IoCs

pid	Process
2460	2024-05-14_db9ac8ff33832978b742904588cf0e54_cryptolocker.exe

Creates a large amount of network flows 1 TTPs
This may indicate a network scan to discover remotely running services.
discovery

Network Service Discovery
T1046
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of UnmapMainImage 2 IoCs

pid	Process
2460	2024-05-14_db9ac8ff33832978b742904588cf0e54_cryptolocker.exe
2216	retln.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2460 wrote to memory of 2216	2460	2024-05-14_db9ac8ff33832978b742904588cf0e54_cryptolocker.exe	28
PID 2460 wrote to memory of 2216	2460	2024-05-14_db9ac8ff33832978b742904588cf0e54_cryptolocker.exe	28
PID 2460 wrote to memory of 2216	2460	2024-05-14_db9ac8ff33832978b742904588cf0e54_cryptolocker.exe	28
PID 2460 wrote to memory of 2216	2460	2024-05-14_db9ac8ff33832978b742904588cf0e54_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-14_db9ac8ff33832978b742904588cf0e54_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-14_db9ac8ff33832978b742904588cf0e54_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2460
- C:\Users\Admin\AppData\Local\Temp\retln.exe
  "C:\Users\Admin\AppData\Local\Temp\retln.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of UnmapMainImage
  PID:2216

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Discovery

T1046

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

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

Filesize
42KB

MD5
4e9bcb18a665b01515b8680db6cdc6d5

SHA1
1649474a4a6782944f1b8f1728a84e7804a8db1c

SHA256
3323539ca50ee8479874c8efdae5b49a42b41faef2350ccc40acc4cdbbf9d9ff

SHA512
c513e2dc5622d96f8d0a5ab895a34310294fba95758251f2f973512fe64132c3491709cba5ad512ac9c8875ef7eb414f68e3933f618f8d23ff5943be03333992

Download Submit
memory/2216-23-0x0000000000820000-0x0000000000826000-memory.dmp

Filesize
24KB

Download
memory/2460-0-0x0000000000390000-0x0000000000396000-memory.dmp

Filesize
24KB

Download
memory/2460-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2460-8-0x0000000000390000-0x0000000000396000-memory.dmp

Filesize
24KB

Download