4f18cb4666fe82cd3d6c4888e26a9e114a0e432c5b739c93d7ed7eeeda003f95

Analysis

max time kernel
148s
max time network
149s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
23-05-2024 14:07

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General

Target

2024-05-23_a3a6b3c3b149742545d7ddf0301e6aff_cryptolocker.exe
Size

52KB
MD5

a3a6b3c3b149742545d7ddf0301e6aff
SHA1

bbcbfd0d008f4f7b851bc58b8c0c3ae1a7e7402a
SHA256

4f18cb4666fe82cd3d6c4888e26a9e114a0e432c5b739c93d7ed7eeeda003f95
SHA512

76513b3cb3ca6ae41ada97037204b04c4afb414fd84824cebf1b023c251813397dc7e5e2e2f723381fc2e5797c7f863768d278340a98b9d6163e68e0e1512c56
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/BtOOtEvwDpjBVaD3E09vxmlcaf2Kz:X6QFElP6n+gJBMOtEvwDpjBtExmln2e

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000d00000001228a-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x000d00000001228a-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
3000	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2128	2024-05-23_a3a6b3c3b149742545d7ddf0301e6aff_cryptolocker.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2128 wrote to memory of 3000	2128	2024-05-23_a3a6b3c3b149742545d7ddf0301e6aff_cryptolocker.exe	28
PID 2128 wrote to memory of 3000	2128	2024-05-23_a3a6b3c3b149742545d7ddf0301e6aff_cryptolocker.exe	28
PID 2128 wrote to memory of 3000	2128	2024-05-23_a3a6b3c3b149742545d7ddf0301e6aff_cryptolocker.exe	28
PID 2128 wrote to memory of 3000	2128	2024-05-23_a3a6b3c3b149742545d7ddf0301e6aff_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-23_a3a6b3c3b149742545d7ddf0301e6aff_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-23_a3a6b3c3b149742545d7ddf0301e6aff_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2128
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3000

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\asih.exe

Filesize
52KB

MD5
a7cc386bd96af379f718f7b2b13ca720

SHA1
9c374c248f17bfd041d067664ecc33ada04c4221

SHA256
ba0b75eed4f5856ac5623ced6e02a01512708e32dda9e60c2c0168a99f043257

SHA512
79e0dc7943ceda50c38735013ffb60c986a8454fa599da6482eaff4ff7ac09a5ab0d86e85da05e459ca1e91f093b0fd4d292925116a5dcfc78b44c2269e6517a

Download Submit
memory/2128-0-0x0000000000250000-0x0000000000256000-memory.dmp

Filesize
24KB

Download
memory/2128-2-0x0000000000490000-0x0000000000496000-memory.dmp

Filesize
24KB

Download
memory/2128-1-0x0000000000250000-0x0000000000256000-memory.dmp

Filesize
24KB

Download
memory/3000-15-0x0000000000480000-0x0000000000486000-memory.dmp

Filesize
24KB

Download
memory/3000-22-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download