07304c793b209faa593d136f06fafc769ffd249cf879c691d00bc89208d44e50

Analysis

max time kernel
16s
max time network
122s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
16-03-2024 11:42

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-03-16_209256f2245304f70a858f09eb5b5340_cryptolocker.exe
Size

34KB
MD5

209256f2245304f70a858f09eb5b5340
SHA1

6ccbadcb9e83cdab47c344f4c795c5510c0f4cd9
SHA256

07304c793b209faa593d136f06fafc769ffd249cf879c691d00bc89208d44e50
SHA512

42aa89f03853c521165c3edef9051dd0be49685c41d7731f5dbac660da8d8b934814fadde398abe0b9829bd1151d7ce745c637b90c5fe9d9df6f287ed0a06d46
SSDEEP

384:bM7Q0pjC4GybxMv01d3AcASBQMf6i/zzzcYgUPSznHzl6A0MFNePD3:b/yC4GyNM01GuQMNXw2PSjH+VPD3

Score

9^/10

discovery

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000a000000013a71-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2984	retln.exe

Loads dropped DLL 1 IoCs

pid	Process
2784	2024-03-16_209256f2245304f70a858f09eb5b5340_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
2784	2024-03-16_209256f2245304f70a858f09eb5b5340_cryptolocker.exe
2984	retln.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2784 wrote to memory of 2984	2784	2024-03-16_209256f2245304f70a858f09eb5b5340_cryptolocker.exe	28
PID 2784 wrote to memory of 2984	2784	2024-03-16_209256f2245304f70a858f09eb5b5340_cryptolocker.exe	28
PID 2784 wrote to memory of 2984	2784	2024-03-16_209256f2245304f70a858f09eb5b5340_cryptolocker.exe	28
PID 2784 wrote to memory of 2984	2784	2024-03-16_209256f2245304f70a858f09eb5b5340_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-03-16_209256f2245304f70a858f09eb5b5340_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-16_209256f2245304f70a858f09eb5b5340_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2784
- 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:2984

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
34KB

MD5
b25a0b5e8ae3a4611cfad50660ebe56f

SHA1
df00b61627292f635bd92aae19aeaacaf4163c1f

SHA256
08ed8434e765d0252d2fd3530f247234c47b22bc8e6d19f4c5764d437c76e2cf

SHA512
61eb61b7230250716a5f867f47fd9e3b98defe511c22af364258ddd3024940743b6d25b36ea2ec10c7187c166ab134ef70169f385b40fc4d06f81cc62df2557c

Download Submit
memory/2784-0-0x0000000000850000-0x0000000000856000-memory.dmp

Filesize
24KB

Download
memory/2784-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2784-8-0x0000000000850000-0x0000000000856000-memory.dmp

Filesize
24KB

Download
memory/2984-23-0x00000000003C0000-0x00000000003C6000-memory.dmp

Filesize
24KB

Download