08f29efa264e253d943127f1daa0276f1931b23f02d7cbcb90952ccb96e924ca

Analysis

max time kernel
8s
max time network
149s
platform
windows7_x64
resource
win7-20240215-en
resource tags

arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
submitted
15/05/2024, 05:25

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General

Target

2024-05-15_4dad7c98b99a1aa280fc4bebfeec33f7_cryptolocker.exe
Size

44KB
MD5

4dad7c98b99a1aa280fc4bebfeec33f7
SHA1

456f19ea215ffab096bb715e76ac5b9c7eedfc73
SHA256

08f29efa264e253d943127f1daa0276f1931b23f02d7cbcb90952ccb96e924ca
SHA512

50d383b1d5f82e37d7cb8653b5192af4669af7b4e6c0c7c32e93c01d3c75ed20bb3ba561f190e727e854abd52e17271536f483e91a7a209fab64e5ce18d92b0d
SSDEEP

768:b/yC4GyNM01GuQMNXw2PSjHPbSuYlW8PAl:b/pYayGig5HjS3NPAl

Score

9^/10

discovery

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000d000000012345-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2456	retln.exe

Loads dropped DLL 1 IoCs

pid	Process
2108	2024-05-15_4dad7c98b99a1aa280fc4bebfeec33f7_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
2108	2024-05-15_4dad7c98b99a1aa280fc4bebfeec33f7_cryptolocker.exe
2456	retln.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2108 wrote to memory of 2456	2108	2024-05-15_4dad7c98b99a1aa280fc4bebfeec33f7_cryptolocker.exe	28
PID 2108 wrote to memory of 2456	2108	2024-05-15_4dad7c98b99a1aa280fc4bebfeec33f7_cryptolocker.exe	28
PID 2108 wrote to memory of 2456	2108	2024-05-15_4dad7c98b99a1aa280fc4bebfeec33f7_cryptolocker.exe	28
PID 2108 wrote to memory of 2456	2108	2024-05-15_4dad7c98b99a1aa280fc4bebfeec33f7_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-15_4dad7c98b99a1aa280fc4bebfeec33f7_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-15_4dad7c98b99a1aa280fc4bebfeec33f7_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2108
- 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:2456

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
44KB

MD5
dc8c5e67bedea4b578d0fb7c40cd60d2

SHA1
a33965d1448985aa50dc01cdc3b725ba4e56f9ee

SHA256
4df06a7f6e3a5569c49d6ddbccf1c115e1432228cf8112da69a0d02107ae6bb1

SHA512
48feed0c77b56bc291016c14feef84079f43b3d30403af300ff264e5902ae77dd78ecad5eae1bc054be3bb8a003070642fbd46d07a3cd8bf70e6050e4fc33bfc

Download Submit
memory/2108-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2108-0-0x0000000001CE0000-0x0000000001CE6000-memory.dmp

Filesize
24KB

Download
memory/2108-8-0x0000000001CE0000-0x0000000001CE6000-memory.dmp

Filesize
24KB

Download
memory/2456-23-0x00000000005D0000-0x00000000005D6000-memory.dmp

Filesize
24KB

Download