b23f8f4ce6712274e8b6200a35b112d02a867c0819a94ee3feaa736475f6fc11

Analysis

max time kernel
150s
max time network
153s
platform
windows7_x64
resource
win7-20240319-en
resource tags

arch:x64arch:x86image:win7-20240319-enlocale:en-usos:windows7-x64system
submitted
17/04/2024, 03:39

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General

Target

2024-04-17_4bb5eec13b3cc707961f391b3af60be9_cryptolocker.exe
Size

388KB
MD5

4bb5eec13b3cc707961f391b3af60be9
SHA1

d25785479cee9da95cc0d65ccbbcf262651dbe58
SHA256

b23f8f4ce6712274e8b6200a35b112d02a867c0819a94ee3feaa736475f6fc11
SHA512

28142373e2aa466432bc1c6365e9ece1bbfb0b157d2957dd3678737b01da74ad61d38503d8afaa3a468ed666e586e03e3998143ebfdf0161afb211163ec5e8e6
SSDEEP

6144:nnOsaQgAOjvrZFODJjBz3j1jTqQy6v2GGnugOtihzXU:nnOflT/ZFIjBz3xjTxynGUOUhXU

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000b0000000121e6-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2204	hasfj.exe

Loads dropped DLL 1 IoCs

pid	Process
1728	2024-04-17_4bb5eec13b3cc707961f391b3af60be9_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 1728 wrote to memory of 2204	1728	2024-04-17_4bb5eec13b3cc707961f391b3af60be9_cryptolocker.exe	28
PID 1728 wrote to memory of 2204	1728	2024-04-17_4bb5eec13b3cc707961f391b3af60be9_cryptolocker.exe	28
PID 1728 wrote to memory of 2204	1728	2024-04-17_4bb5eec13b3cc707961f391b3af60be9_cryptolocker.exe	28
PID 1728 wrote to memory of 2204	1728	2024-04-17_4bb5eec13b3cc707961f391b3af60be9_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-17_4bb5eec13b3cc707961f391b3af60be9_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-17_4bb5eec13b3cc707961f391b3af60be9_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1728
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  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\hasfj.exe

Filesize
388KB

MD5
2ff3b67b8918244f60d2968b2965285d

SHA1
2d00e0941e35b97a7772da13f96b5ef1448f61aa

SHA256
b75420043e48843464e4052e0990a0fdc34fb7b89f174db2288d3f3a460d95bd

SHA512
c708a14e54204a14060819a14427040e9fb447a790d061f10de62922e96d50ea3527b81848eb9fbdd9ee3f0db29d93264dcebf38ab7f0fbe1c48d902a06aed45

Download Submit
memory/1728-0-0x0000000000490000-0x0000000000496000-memory.dmp

Filesize
24KB

Download
memory/1728-1-0x00000000004B0000-0x00000000004B6000-memory.dmp

Filesize
24KB

Download
memory/1728-2-0x0000000000490000-0x0000000000496000-memory.dmp

Filesize
24KB

Download
memory/2204-15-0x0000000000590000-0x0000000000596000-memory.dmp

Filesize
24KB

Download
memory/2204-19-0x0000000000360000-0x0000000000366000-memory.dmp

Filesize
24KB

Download