197b9000e89f45ec6a95d17e687c0c1b688604ca240069705feb0317d9df300a

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240221-en
resource tags

arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
submitted
25-02-2024 13:00

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General

Target

2024-02-25_ebb03aef9da4acbd2ae9ee8403038cde_cryptolocker.exe
Size

70KB
MD5

ebb03aef9da4acbd2ae9ee8403038cde
SHA1

0652454d765e0f5560af1e9b43e6d06a088a78cc
SHA256

197b9000e89f45ec6a95d17e687c0c1b688604ca240069705feb0317d9df300a
SHA512

bd940c8ab21515512cb51e875c67a8f3d834c13458de3e84754d38b6adcbe672bd6a5123997e00efc81f66592620c67c47425914e2ee93c9b95ea5b64b3d0f3c
SSDEEP

768:u6LsoEEeegiZPvEhHSG+gZgtOOtEvwDpjeMLam5ax+9:u6QFElP6n+gWMOtEvwDpjjaYaI

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000300000001e96f-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000300000001e96f-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-1-5-21-1392040655-2056082574-619088944-1000\Control Panel\International\Geo\Nation	2024-02-25_ebb03aef9da4acbd2ae9ee8403038cde_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1920	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 620 wrote to memory of 1920	620	2024-02-25_ebb03aef9da4acbd2ae9ee8403038cde_cryptolocker.exe	86
PID 620 wrote to memory of 1920	620	2024-02-25_ebb03aef9da4acbd2ae9ee8403038cde_cryptolocker.exe	86
PID 620 wrote to memory of 1920	620	2024-02-25_ebb03aef9da4acbd2ae9ee8403038cde_cryptolocker.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-02-25_ebb03aef9da4acbd2ae9ee8403038cde_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-25_ebb03aef9da4acbd2ae9ee8403038cde_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:620
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1920

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
70KB

MD5
a2b92c433c1efaa9810d8ffdc6f44908

SHA1
15a667a9000612f96d6690e8091f7a35b0ae7e0c

SHA256
ba8445643cdd8be2d3d50f8afc2a4d82f7f3ae00d5b443c0c19e219e3efe1a36

SHA512
267b477cb20de8decf87f32a11476faf1ba0f264afbe6b8e1c5fac99b8955b37834f6e0d7dfbf097516310c23d123213838b87a796616cf9027342694271eb27

Download Submit
memory/620-0-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/620-1-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/620-2-0x00000000005C0000-0x00000000005C6000-memory.dmp

Filesize
24KB

Download
memory/1920-17-0x00000000006D0000-0x00000000006D6000-memory.dmp

Filesize
24KB

Download
memory/1920-21-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download