85f5d7060ae28b4066e0453210afff27e9b7fb84baf7a6952e532acd3ad82d69

Analysis

max time kernel
150s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
09-05-2024 16:56

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General

Target

2024-05-09_ff799466e5d0f58ee3f854d12f048bf3_cryptolocker.exe
Size

35KB
MD5

ff799466e5d0f58ee3f854d12f048bf3
SHA1

daf67e5817d04dd2768da4e9ea80c22c70ef53c4
SHA256

85f5d7060ae28b4066e0453210afff27e9b7fb84baf7a6952e532acd3ad82d69
SHA512

115e01a35783ea4542ad2e0c6fb40227958df9562dbeed747550c5cd64fd51af428e92580342fca500aa7967d722b2963d86d7f6bf971cc14d0e7f1e334ce5ee
SSDEEP

768:bA74zYcgT/Ekd0ryfjPIunqpeNswm6GZC:bA6YcA/X6G0W1PGZC

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023278-12.dat	CryptoLocker_rule2

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3558294865-3673844354-2255444939-1000\Control Panel\International\Geo\Nation	2024-05-09_ff799466e5d0f58ee3f854d12f048bf3_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4492	hasfj.exe

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

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3888 wrote to memory of 4492	3888	2024-05-09_ff799466e5d0f58ee3f854d12f048bf3_cryptolocker.exe	81
PID 3888 wrote to memory of 4492	3888	2024-05-09_ff799466e5d0f58ee3f854d12f048bf3_cryptolocker.exe	81
PID 3888 wrote to memory of 4492	3888	2024-05-09_ff799466e5d0f58ee3f854d12f048bf3_cryptolocker.exe	81

C:\Users\Admin\AppData\Local\Temp\2024-05-09_ff799466e5d0f58ee3f854d12f048bf3_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-09_ff799466e5d0f58ee3f854d12f048bf3_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3888
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:4492

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
35KB

MD5
2fc2735247872d0655e19bb74cc27821

SHA1
ac5420b8f2d98dbd050c31dbd9b370906643a4dd

SHA256
ffcdf14d66c814c0daed5449eb5a7275f9191555eee8799fbb0136c86b7cbb5d

SHA512
d1e0837803c801c01b7dc0510d82bc12c90a7e7c6178c65b2cf5c9b535b3ec9972e30a1f234f6c826a853d8804d2dbba0c7d85400e77ab3f7179c695fa733347

Download Submit
memory/3888-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/3888-8-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/3888-1-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download