25651b34571c6300baaf1a24459156a79a296e0c0aeb92c4eb96cd463fee2bb5

Analysis

max time kernel
16s
max time network
125s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
22/02/2024, 17:29

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General

Target

2024-02-22_29a3a1b942cf357f9fb020aaeab9d6ed_cryptolocker.exe
Size

31KB
MD5

29a3a1b942cf357f9fb020aaeab9d6ed
SHA1

3a3678102b63eaf081ebae5f2d0c8d4d6c8b37a6
SHA256

25651b34571c6300baaf1a24459156a79a296e0c0aeb92c4eb96cd463fee2bb5
SHA512

6c8635031b25aa5fb6cac27d147635d210da7944b08783a76c8d7a1d9cf2a374b659c728c0627beab224e8972b0b075fd4ddd0df6c94fbed5ebc4b7aad7381a4
SSDEEP

384:bM7Q0pjC4GybxMv01d3AcASBQMf6i/zzzcYgUPSznUssol:b/yC4GyNM01GuQMNXw2PSjWol

Score

9^/10

discovery

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000c000000012248-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
3068	retln.exe

Loads dropped DLL 1 IoCs

pid	Process
2352	2024-02-22_29a3a1b942cf357f9fb020aaeab9d6ed_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
2352	2024-02-22_29a3a1b942cf357f9fb020aaeab9d6ed_cryptolocker.exe
3068	retln.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2352 wrote to memory of 3068	2352	2024-02-22_29a3a1b942cf357f9fb020aaeab9d6ed_cryptolocker.exe	28
PID 2352 wrote to memory of 3068	2352	2024-02-22_29a3a1b942cf357f9fb020aaeab9d6ed_cryptolocker.exe	28
PID 2352 wrote to memory of 3068	2352	2024-02-22_29a3a1b942cf357f9fb020aaeab9d6ed_cryptolocker.exe	28
PID 2352 wrote to memory of 3068	2352	2024-02-22_29a3a1b942cf357f9fb020aaeab9d6ed_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-22_29a3a1b942cf357f9fb020aaeab9d6ed_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-22_29a3a1b942cf357f9fb020aaeab9d6ed_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2352
- 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:3068

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

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Downloads

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

Filesize
32KB

MD5
32bdc8245ba5885e2370f91f6922d8d7

SHA1
32b358d4ffbcb671fed302c49a54e7f81455f7a2

SHA256
32ddfcfd95b13d8e4fdd0586fa1e5049bca03914e9e2929eda612ed08c0a33c2

SHA512
35a1a276f1c527c41894a64489e5555703a73fdd74fda1d1b2d1076dffc6f3249591ec1dc1b2ff6010f36c3e71627bdfc974b354e935b6e1294243aa684c65e5

Download Submit
memory/2352-0-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/2352-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2352-3-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/3068-23-0x00000000001F0000-0x00000000001F6000-memory.dmp

Filesize
24KB

Download