cba9d7e93e65478eaf89f5b664e284d6428993f971cca62fb8e8055677020a6d

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240419-en
resource tags

arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
submitted
30/04/2024, 20:44

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-04-30_2861805fa594960e91dfda104a481e7e_cryptolocker.exe
Size

45KB
MD5

2861805fa594960e91dfda104a481e7e
SHA1

7a9a2aa800ab542db494eb94d244d402833326b1
SHA256

cba9d7e93e65478eaf89f5b664e284d6428993f971cca62fb8e8055677020a6d
SHA512

dd751c892f86812b61e234506f51e51fe243f1b2b10ed1718401012fbfdb202ee05276c892b1c6a28701354ca7334473b2ab63ea166f471296fb9e66b1f565a0
SSDEEP

768:V6LsoEEeegiZPvEhHSG+gDYQtOOtEvwDpj/MLam5aFr7YOzzfm0EXsa0:V6QFElP6n+gMQMOtEvwDpjyaYaFAh3S

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000a00000002168f-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000a00000002168f-12.dat	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-1-5-21-17203666-93769886-2545153620-1000\Control Panel\International\Geo\Nation	2024-04-30_2861805fa594960e91dfda104a481e7e_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
712	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 636 wrote to memory of 712	636	2024-04-30_2861805fa594960e91dfda104a481e7e_cryptolocker.exe	84
PID 636 wrote to memory of 712	636	2024-04-30_2861805fa594960e91dfda104a481e7e_cryptolocker.exe	84
PID 636 wrote to memory of 712	636	2024-04-30_2861805fa594960e91dfda104a481e7e_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-04-30_2861805fa594960e91dfda104a481e7e_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-30_2861805fa594960e91dfda104a481e7e_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:636
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:712

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
45KB

MD5
646544cc1e8f1c8a5c97b34a7fb280d9

SHA1
5a5ff10ae66f5c7db232150c09bfd4acf8904541

SHA256
a83da68b6933e9b56c4ba6c66ae853d24c48207b8550183656033501783c04a3

SHA512
e76810ca3b58dacb5bf009ea9f230b734e08b71859d6a672c1af872b2bd22395ba4854a9efac23ced26a6ced0e5b541acf21354a519a66277b75227ad68c9f53

Download Submit
memory/636-0-0x00000000005B0000-0x00000000005B6000-memory.dmp

Filesize
24KB

Download
memory/636-1-0x00000000005D0000-0x00000000005D6000-memory.dmp

Filesize
24KB

Download
memory/636-8-0x00000000005B0000-0x00000000005B6000-memory.dmp

Filesize
24KB

Download
memory/712-17-0x0000000000680000-0x0000000000686000-memory.dmp

Filesize
24KB

Download
memory/712-23-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download