367ab2ffafb3836a7c6d80a48c591e86d82155ed7e8fe4920ad22f534eaa708e

Analysis

max time kernel
3s
max time network
72s
platform
windows7_x64
resource
win7-20240220-en
resource tags

arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
submitted
09/03/2024, 22:00

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General

Target

2024-03-09_fdff4cc39399ecea7c1855061970865f_cryptolocker.exe
Size

25KB
MD5

fdff4cc39399ecea7c1855061970865f
SHA1

9206bd25e4e205d783477b6ff8b68b99c27379e4
SHA256

367ab2ffafb3836a7c6d80a48c591e86d82155ed7e8fe4920ad22f534eaa708e
SHA512

3c66069834820c0dd7a7fd94dcc3356eba2cd58f708eb3bd10b5ee979909e3c7d709f6a7f0a06f1fb8b1e44b0570fa4fed1de561f401bd362bc0b9a4e1391e50
SSDEEP

384:bM7Q0pjC4GybxMv01d3AcASBQMf6i/zznuuic/:b/yC4GyNM01GuQMNXua/

Score

9^/10

discovery

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000c000000012253-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2848	retln.exe

Loads dropped DLL 1 IoCs

pid	Process
2968	2024-03-09_fdff4cc39399ecea7c1855061970865f_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
2968	2024-03-09_fdff4cc39399ecea7c1855061970865f_cryptolocker.exe
2848	retln.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2968 wrote to memory of 2848	2968	2024-03-09_fdff4cc39399ecea7c1855061970865f_cryptolocker.exe	28
PID 2968 wrote to memory of 2848	2968	2024-03-09_fdff4cc39399ecea7c1855061970865f_cryptolocker.exe	28
PID 2968 wrote to memory of 2848	2968	2024-03-09_fdff4cc39399ecea7c1855061970865f_cryptolocker.exe	28
PID 2968 wrote to memory of 2848	2968	2024-03-09_fdff4cc39399ecea7c1855061970865f_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-03-09_fdff4cc39399ecea7c1855061970865f_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-09_fdff4cc39399ecea7c1855061970865f_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2968
- 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:2848

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

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Downloads

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

Filesize
26KB

MD5
131356ef174ef1fd987a242a7f83f2a7

SHA1
d95689a72affd34b52a417a6ed3e81cd97a2134a

SHA256
929360ca6b0346d9ff553a2984fca33eabd86d9d76c76d9436450338385200fa

SHA512
2a3dc8bc2a70e432bc052a903396f36d69d5a8f874999acf23c3b83afc7ac6df0432a891d5f81a01b63cb31cb3c9b4ad204e2104ca48a3b4bddda7a75abca0f8

Download Submit
memory/2968-0-0x0000000000380000-0x0000000000386000-memory.dmp

Filesize
24KB

Download
memory/2968-1-0x0000000000380000-0x0000000000386000-memory.dmp

Filesize
24KB

Download
memory/2968-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download