626063a552b9371144aa4285bdb0bc9d03eb5039f6389aa531c4af929c219009

Analysis

max time kernel
151s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
09-04-2024 11:29

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General

Target

2024-04-09_3c818847971190b19d192b92587f3f75_cryptolocker.exe
Size

38KB
MD5

3c818847971190b19d192b92587f3f75
SHA1

7207b00a4d1d23303124d6523cb3a41dd5aa6b48
SHA256

626063a552b9371144aa4285bdb0bc9d03eb5039f6389aa531c4af929c219009
SHA512

52f4c64d12ce1fd2955fd54a967583f45b58b327d77a70b2382bf44dc46a768c0d7e1b1d301145c8108d7025470f163ec74178360590faa529b1088d6e31a314
SSDEEP

768:bA74zYcgT/Ekd0ryfjPIunqpeNswmT3Hws:bA6YcA/X6G0W143Qs

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00080000000231f7-12.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-1-5-21-3045580317-3728985860-206385570-1000\Control Panel\International\Geo\Nation	2024-04-09_3c818847971190b19d192b92587f3f75_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3420	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 3264 wrote to memory of 3420	3264	2024-04-09_3c818847971190b19d192b92587f3f75_cryptolocker.exe	87
PID 3264 wrote to memory of 3420	3264	2024-04-09_3c818847971190b19d192b92587f3f75_cryptolocker.exe	87
PID 3264 wrote to memory of 3420	3264	2024-04-09_3c818847971190b19d192b92587f3f75_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-04-09_3c818847971190b19d192b92587f3f75_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-09_3c818847971190b19d192b92587f3f75_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3264
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:3420

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
38KB

MD5
cb36760f4e94f41bf9ec40f504611e7a

SHA1
59aa4a33aa2360b4b554f628763579bf91b1db61

SHA256
e3163cc925174ad0c78c4afb30cae7ccd20f2b36bc7f5938b1e6aaf6d138e6b7

SHA512
5df0a3d00120914ae689d3ec5ec6cac013f17219a98264a00ea10f334d5ab87a57cb06deb7560af5231106ac972013e7a27ace6cf187c8d34f1f58b736a7d951

Download Submit
memory/3264-0-0x0000000002260000-0x0000000002266000-memory.dmp

Filesize
24KB

Download
memory/3264-1-0x0000000002260000-0x0000000002266000-memory.dmp

Filesize
24KB

Download
memory/3264-2-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download
memory/3420-17-0x0000000002240000-0x0000000002246000-memory.dmp

Filesize
24KB

Download
memory/3420-20-0x0000000002200000-0x0000000002206000-memory.dmp

Filesize
24KB

Download