5c54edc3771f14082c1d7e028f19d8cb73c02ee2340d8a9d158a57ac5c537c33

Analysis

max time kernel
147s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
30-04-2024 04:58

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General

Target

2024-04-30_69ce3ab814db4f439ed97c4737474c13_cryptolocker.exe
Size

85KB
MD5

69ce3ab814db4f439ed97c4737474c13
SHA1

76ca7d473e305a364018069e4d9750c955803940
SHA256

5c54edc3771f14082c1d7e028f19d8cb73c02ee2340d8a9d158a57ac5c537c33
SHA512

eca32068443132900214407bcdbc6efd5f3f9b78dc75878241aeb753046604c2e5c96089abeef69f2a29f0bfd6e90f8f498c381c655e7f8236e28a193dc3692d
SSDEEP

768:V6LsoEEeegiZPvEhHSG+gDYQtOOtEvwDpj/MLa5VccPtNw5CS95yFPnYcS:V6QFElP6n+gMQMOtEvwDpjyaLccVNl69

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000600000002327c-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000600000002327c-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-1-5-21-540404634-651139247-2967210625-1000\Control Panel\International\Geo\Nation	2024-04-30_69ce3ab814db4f439ed97c4737474c13_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4596	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 3292 wrote to memory of 4596	3292	2024-04-30_69ce3ab814db4f439ed97c4737474c13_cryptolocker.exe	82
PID 3292 wrote to memory of 4596	3292	2024-04-30_69ce3ab814db4f439ed97c4737474c13_cryptolocker.exe	82
PID 3292 wrote to memory of 4596	3292	2024-04-30_69ce3ab814db4f439ed97c4737474c13_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-04-30_69ce3ab814db4f439ed97c4737474c13_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-30_69ce3ab814db4f439ed97c4737474c13_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3292
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4596

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\asih.exe

Filesize
85KB

MD5
f1032c38f79e2b3f906d709399b64588

SHA1
1c022f0c711fc18e310795c810e7322606dff165

SHA256
d47954ce63fdf83f021b4dd3ed3e94ffb67c661b6e123f1fb59df57b6e5fcaa9

SHA512
e7817fb606fd232fe20a097bf77aaf54fc1ed925149b0747e5d3747905f02aa9b6654e8ec98a1df289fb52e210312cbde112a3586d15ff19ce4a8ab7f1d58e81

Download Submit
memory/3292-0-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/3292-1-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/3292-8-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4596-17-0x0000000000750000-0x0000000000756000-memory.dmp

Filesize
24KB

Download
memory/4596-23-0x0000000000620000-0x0000000000626000-memory.dmp

Filesize
24KB

Download