165a62682ec84da1e62ed5f7062b70b0c7d57270fd32144726fcaad93fc3a499

Analysis

max time kernel
11s
max time network
123s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
23/02/2024, 02:25

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General

Target

2024-02-23_2b2a495bb554fcad859a552a6688f95a_cryptolocker.exe
Size

38KB
MD5

2b2a495bb554fcad859a552a6688f95a
SHA1

60e001f5859e43bcc0ca98442f4f60dc898e802a
SHA256

165a62682ec84da1e62ed5f7062b70b0c7d57270fd32144726fcaad93fc3a499
SHA512

4a1921349774b1ad3ee711fffe40e53f51e7ed641ca58685b238a58afc209b6f42e7ee08f60688613a4280f4623312fe1d9211619d42fb6fc138f5056a9565b7
SSDEEP

384:bM7Q0pjC4GybxMv01d3AcASBQMf6i/zzzcYgUPSznHzl6AJvDSuYlxugfN:b/yC4GyNM01GuQMNXw2PSjHPbSuYlP

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000a000000014a94-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2204	retln.exe

Loads dropped DLL 1 IoCs

pid	Process
2804	2024-02-23_2b2a495bb554fcad859a552a6688f95a_cryptolocker.exe

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
2804	2024-02-23_2b2a495bb554fcad859a552a6688f95a_cryptolocker.exe
2204	retln.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2804 wrote to memory of 2204	2804	2024-02-23_2b2a495bb554fcad859a552a6688f95a_cryptolocker.exe	28
PID 2804 wrote to memory of 2204	2804	2024-02-23_2b2a495bb554fcad859a552a6688f95a_cryptolocker.exe	28
PID 2804 wrote to memory of 2204	2804	2024-02-23_2b2a495bb554fcad859a552a6688f95a_cryptolocker.exe	28
PID 2804 wrote to memory of 2204	2804	2024-02-23_2b2a495bb554fcad859a552a6688f95a_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-23_2b2a495bb554fcad859a552a6688f95a_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-23_2b2a495bb554fcad859a552a6688f95a_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2804
- 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:2204

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

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
38KB

MD5
77f88ed15633cb668ec1b1feec0bc69b

SHA1
a3fe2246f35ada0f611236a4604419134b621ffd

SHA256
9f59e5c40da9230cb5f88c3de14844d11d48f6807d973776134efbf71330bf16

SHA512
79ec5e28d0b904677c2d57217ff4ec7aed847e25bf6f9d22ef703303eea56bd1985ce302755e49ec79760bf7d6aca33bdccf011965f1d8997c64a747b1c988c4

Download Submit
memory/2204-23-0x00000000002A0000-0x00000000002A6000-memory.dmp

Filesize
24KB

Download
memory/2804-0-0x00000000003E0000-0x00000000003E6000-memory.dmp

Filesize
24KB

Download
memory/2804-2-0x00000000003E0000-0x00000000003E6000-memory.dmp

Filesize
24KB

Download
memory/2804-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download