96b04067bdd1410cf1cd39374861ca91642de1fd47e0c62ae978f9d53edb205b

Analysis

max time kernel
148s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
24/04/2024, 23:27

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-04-24_92bf2f771ee08f6becfa59c76deb1714_cryptolocker.exe
Size

39KB
MD5

92bf2f771ee08f6becfa59c76deb1714
SHA1

c07bd21b60924f6b105c955c4a38f8149eb0e1fa
SHA256

96b04067bdd1410cf1cd39374861ca91642de1fd47e0c62ae978f9d53edb205b
SHA512

33073e653159a3e67db74ce9855cc497f61f6d0eee01499d9418bbed79333dea853af24da9a285e8ba9ab8ba141da43ca57de4dd1843dc82048545625ec4af77
SSDEEP

768:wHGGaSawqnwjRQ6ESlmFOsPoOdQtOOtEvwDpjm6WaJIOc+UPPEkLNWZ:YGzl5wjRQBBOsP1QMOtEvwDpjgarrkL4

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 3 IoCs

resource	yara_rule
behavioral2/memory/4656-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000300000001e97a-13.dat	CryptoLocker_rule2
behavioral2/memory/4656-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral2/memory/4656-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000300000001e97a-13.dat	CryptoLocker_set1
behavioral2/memory/4656-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1

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-1-5-21-2288054676-1871194608-3559553667-1000\Control Panel\International\Geo\Nation	2024-04-24_92bf2f771ee08f6becfa59c76deb1714_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1536	asih.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 4656 wrote to memory of 1536	4656	2024-04-24_92bf2f771ee08f6becfa59c76deb1714_cryptolocker.exe	87
PID 4656 wrote to memory of 1536	4656	2024-04-24_92bf2f771ee08f6becfa59c76deb1714_cryptolocker.exe	87
PID 4656 wrote to memory of 1536	4656	2024-04-24_92bf2f771ee08f6becfa59c76deb1714_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-04-24_92bf2f771ee08f6becfa59c76deb1714_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-24_92bf2f771ee08f6becfa59c76deb1714_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4656
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1536

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

Loading Replay Monitor...

Downloads

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

Filesize
40KB

MD5
7942f64fa546cb2bbfed12221f329b1e

SHA1
ebe4c8c123dafb016aebbbc79ea26b4c4da127be

SHA256
db21ee1e6d066dc84343e45bc9959ba813778c413c847fbf709a4100b5d71599

SHA512
f455408b154f35b05d049869ccc816a3e52f1a5936db8a8c24c0d0cf853cce1b79ed48f1af9d72fb3c1eea3f3c704aa53e736f39b6591b2aa5c27e72e5f1a9a2

Download Submit
memory/1536-19-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/1536-22-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/4656-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/4656-1-0x0000000000560000-0x0000000000566000-memory.dmp

Filesize
24KB

Download
memory/4656-2-0x0000000000560000-0x0000000000566000-memory.dmp

Filesize
24KB

Download
memory/4656-3-0x00000000020F0000-0x00000000020F6000-memory.dmp

Filesize
24KB

Download
memory/4656-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download