025429a2ca83224ae85ae0e29557826961d176d2a07b1df269dfd15df0cefe08

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
23-04-2024 03:37

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General

Target

2024-04-23_57a2103c73f036c3c4cc34d097a097ef_cryptolocker.exe
Size

38KB
MD5

57a2103c73f036c3c4cc34d097a097ef
SHA1

c60a35dd32ca735bdd5a827f9017f9b39112d21f
SHA256

025429a2ca83224ae85ae0e29557826961d176d2a07b1df269dfd15df0cefe08
SHA512

d5f1ae2a2abb422937800bc2b2f91e6147fb8b4f410c1f2c96faae1daab243435943e8c65e1fdf4d62c893c4faaf047a2e63458f46940def3c16f0697cd38719
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBjb1iIJSFlWvmv359:X6QFElP6n+gJQMOtEvwDpjBngHnZ3z

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000300000001e97c-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000300000001e97c-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-1-5-21-355664440-2199602304-1223909400-1000\Control Panel\International\Geo\Nation	2024-04-23_57a2103c73f036c3c4cc34d097a097ef_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2796	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 4360 wrote to memory of 2796	4360	2024-04-23_57a2103c73f036c3c4cc34d097a097ef_cryptolocker.exe	84
PID 4360 wrote to memory of 2796	4360	2024-04-23_57a2103c73f036c3c4cc34d097a097ef_cryptolocker.exe	84
PID 4360 wrote to memory of 2796	4360	2024-04-23_57a2103c73f036c3c4cc34d097a097ef_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-04-23_57a2103c73f036c3c4cc34d097a097ef_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-23_57a2103c73f036c3c4cc34d097a097ef_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4360
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2796

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
38KB

MD5
42fce37855b95cee0771a1b693141aeb

SHA1
d2de3ecffe44e292dd74164f52d02ad304df5107

SHA256
9274319fd8d032f381f4c4ccc83920d1b971d4104a8e4a627e83c1be6b606a77

SHA512
ff17ac7cd937aa13f61049c5c44568b1496b0eb75630f2a13e2c5b18b10f93e51c6c3dee2ba65ec50cdaa91a25275043d1e3710568f0c6afdc833d543f8b6bcf

Download Submit
memory/2796-17-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/2796-19-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4360-0-0x0000000000640000-0x0000000000646000-memory.dmp

Filesize
24KB

Download
memory/4360-1-0x0000000000640000-0x0000000000646000-memory.dmp

Filesize
24KB

Download
memory/4360-2-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download