ddf7b50fff24e787390aa18f6b5f21c88a429fa2df0ce3233e25b8b0e7adeee8

Analysis

max time kernel
149s
max time network
150s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
21-05-2024 15:45

Target

2024-05-21_87fe233842afc108106f2919eaa4c681_cryptolocker.exe
Size

32KB
MD5

87fe233842afc108106f2919eaa4c681
SHA1

eff61c0d562619c548d7c5df0294d13f5be92223
SHA256

ddf7b50fff24e787390aa18f6b5f21c88a429fa2df0ce3233e25b8b0e7adeee8
SHA512

6daf0ffe36d790655a3297fe05cce06e34350fe49499e8dfc3f4010494aeb43318b20158eca4d401c9dd7efbeb48d3891b95d889054efc55f4eb66196b76b29c
SSDEEP

384:bG74uGLLQRcsdeQ72ngEr4K7YmE8j60nrlwfjDUGTGSWLx:bG74zYcgT/Ekd0ryfjcV

Score

9^/10

Detection of CryptoLocker Variants 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2184-0-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
\Users\Admin\AppData\Local\Temp\hasfj.exe	CryptoLocker_rule2
behavioral1/memory/2184-15-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/492-16-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/492-26-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

Processes:

hasfj.exe

pid process

492 hasfj.exe
Loads dropped DLL 1 IoCs

Processes:

2024-05-21_87fe233842afc108106f2919eaa4c681_cryptolocker.exe

pid process

2184 2024-05-21_87fe233842afc108106f2919eaa4c681_cryptolocker.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
492	hasfj.exe

pid	process
2184	2024-05-21_87fe233842afc108106f2919eaa4c681_cryptolocker.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

2024-05-21_87fe233842afc108106f2919eaa4c681_cryptolocker.exe

description	pid	process	target process
PID 2184 wrote to memory of 492	2184	2024-05-21_87fe233842afc108106f2919eaa4c681_cryptolocker.exe	hasfj.exe
PID 2184 wrote to memory of 492	2184	2024-05-21_87fe233842afc108106f2919eaa4c681_cryptolocker.exe	hasfj.exe
PID 2184 wrote to memory of 492	2184	2024-05-21_87fe233842afc108106f2919eaa4c681_cryptolocker.exe	hasfj.exe
PID 2184 wrote to memory of 492	2184	2024-05-21_87fe233842afc108106f2919eaa4c681_cryptolocker.exe	hasfj.exe

C:\Users\Admin\AppData\Local\Temp\hasfj.exe
"C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
2⤵
- Executes dropped EXE
PID:492

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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

Filesize
33KB

MD5
2231370dfc0ecad345f9fe943f7d92a6

SHA1
39e7accd8b6b22644aa2f93f5d5be4648d8644c9

SHA256
687d152ddefb9376f7d3995e30121e7492d0d68b8a56cd2eef62193417be0906

SHA512
12534924b5f4c837bf37203136bab65f390bd6ad5263d17b829e4a274b7088708b610fc3c96f11ee69b330c4e671ea0df541e2226aba401e141a63c87ae74c90

Download Submit
memory/492-16-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/492-18-0x0000000000480000-0x0000000000486000-memory.dmp

Filesize
24KB

Download
memory/492-25-0x0000000000470000-0x0000000000476000-memory.dmp

Filesize
24KB

Download
memory/492-26-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/2184-0-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/2184-9-0x00000000002D0000-0x00000000002D6000-memory.dmp

Filesize
24KB

Download
memory/2184-2-0x00000000002E0000-0x00000000002E6000-memory.dmp

Filesize
24KB

Download
memory/2184-1-0x00000000002D0000-0x00000000002D6000-memory.dmp

Filesize
24KB

Download
memory/2184-15-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download