dc0d5415e0c05228e5514160e59bed00dbb0f73fd0e2ae02fd622588f9c20b58

Analysis

max time kernel
15s
max time network
121s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
18-03-2024 16:37

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-03-18_832f7a9ba680bc04b86d50eefba571d9_cryptolocker.exe
Size

29KB
MD5

832f7a9ba680bc04b86d50eefba571d9
SHA1

2f7e4ec0ca3780f3c136a27ac15a978814e5b952
SHA256

dc0d5415e0c05228e5514160e59bed00dbb0f73fd0e2ae02fd622588f9c20b58
SHA512

6eb540ee76d3f0e410f10614bee988519f74a5172ed5682303f88f29185078d97b6337311a2e156ffabaa30e9d93e5e6a05f7e640bd7f10cf263a083da998048
SSDEEP

384:bM7Q0pjC4GybxMv01d3AcASBQMf6i/zznum+Ux:b/yC4GyNM01GuQMNXum+4

Score

9^/10

discovery

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x00050000000120e0-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2940	retln.exe

Loads dropped DLL 1 IoCs

pid	Process
2912	2024-03-18_832f7a9ba680bc04b86d50eefba571d9_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
2912	2024-03-18_832f7a9ba680bc04b86d50eefba571d9_cryptolocker.exe
2940	retln.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2912 wrote to memory of 2940	2912	2024-03-18_832f7a9ba680bc04b86d50eefba571d9_cryptolocker.exe	28
PID 2912 wrote to memory of 2940	2912	2024-03-18_832f7a9ba680bc04b86d50eefba571d9_cryptolocker.exe	28
PID 2912 wrote to memory of 2940	2912	2024-03-18_832f7a9ba680bc04b86d50eefba571d9_cryptolocker.exe	28
PID 2912 wrote to memory of 2940	2912	2024-03-18_832f7a9ba680bc04b86d50eefba571d9_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-03-18_832f7a9ba680bc04b86d50eefba571d9_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-18_832f7a9ba680bc04b86d50eefba571d9_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2912
- 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:2940

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

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

Filesize
29KB

MD5
56f6b8d503cdd327ae4809d88c1bdbf9

SHA1
03daacd26fb83f021021e145ed28f78a40f5140b

SHA256
62a87a1c3147c60d8cc1b6a7034aa371dafa2fbf8c6f570fdcef87e0a2a776aa

SHA512
e96fba10a2cbd25de75d2895347421f34876dea2d86768389a9ee30a7fbea6b7ab715aa86e173454ac208e12308a23c98127f106cf6a453e8d1e20527aa202b2

Download Submit
memory/2912-0-0x0000000000360000-0x0000000000366000-memory.dmp

Filesize
24KB

Download
memory/2912-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2912-2-0x0000000000360000-0x0000000000366000-memory.dmp

Filesize
24KB

Download
memory/2940-18-0x0000000000260000-0x0000000000266000-memory.dmp

Filesize
24KB

Download