7f98768ba6d10acd93497192860280f7dd7bba77e6e4add78e0f700561d4da88

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
19/04/2024, 14:34

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General

Target

2024-04-19_3f95de00ce8cb0e69e1d16db15ceee0d_cryptolocker.exe
Size

39KB
MD5

3f95de00ce8cb0e69e1d16db15ceee0d
SHA1

c15eed391f335b6edfd2ebc20fa855e77bce92db
SHA256

7f98768ba6d10acd93497192860280f7dd7bba77e6e4add78e0f700561d4da88
SHA512

9030213971a4027cdd01c9cb13ff49c11d29cede5dfaebda8c4b379b6cec373ac87c4ff947d8ad15529754a60a029151dc90afa56e954ceb8c6b4f41c1fd8bbe
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBVaD3TP7DFHu8KzZ:X6QFElP6n+gJQMOtEvwDpjBmzDkz1

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000300000001e970-11.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000300000001e970-11.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-1-5-21-2177723727-746291240-1644359950-1000\Control Panel\International\Geo\Nation	2024-04-19_3f95de00ce8cb0e69e1d16db15ceee0d_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4968	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 4944 wrote to memory of 4968	4944	2024-04-19_3f95de00ce8cb0e69e1d16db15ceee0d_cryptolocker.exe	86
PID 4944 wrote to memory of 4968	4944	2024-04-19_3f95de00ce8cb0e69e1d16db15ceee0d_cryptolocker.exe	86
PID 4944 wrote to memory of 4968	4944	2024-04-19_3f95de00ce8cb0e69e1d16db15ceee0d_cryptolocker.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-04-19_3f95de00ce8cb0e69e1d16db15ceee0d_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-19_3f95de00ce8cb0e69e1d16db15ceee0d_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4944
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4968

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
39KB

MD5
7b352f96af5aa91a78053565530fae25

SHA1
a47f338a99a833ac479ea803b4498e027995f81a

SHA256
7f3d769ea9e3524ee837da2bdbb8ad6248d87fb6061d5c645c2b284681bcf5d4

SHA512
ad64932f6d2cafb482ec82555063fd6c04c2147f628f2573cb5efe086e5a92dd6f4d9cb44740729b6d80786617be397de9650bd4d79765051cf7eddb80546026

Download Submit
memory/4944-0-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download
memory/4944-1-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download
memory/4944-2-0x0000000000680000-0x0000000000686000-memory.dmp

Filesize
24KB

Download
memory/4968-18-0x0000000002060000-0x0000000002066000-memory.dmp

Filesize
24KB

Download
memory/4968-17-0x0000000002090000-0x0000000002096000-memory.dmp

Filesize
24KB

Download