1c8203c7a653ee6555d8af9177c01554f0c43b8be8f6b70edd22b88acb240c4b

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
29/04/2024, 12:13

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General

Target

2024-04-29_fbb3a094af0f0695f3af0e0756550b82_cryptolocker.exe
Size

39KB
MD5

fbb3a094af0f0695f3af0e0756550b82
SHA1

30e2a5d12b2458ca06defd80d1a6c5d9b94c9e6a
SHA256

1c8203c7a653ee6555d8af9177c01554f0c43b8be8f6b70edd22b88acb240c4b
SHA512

9758ff48465a77d0f729e7d1c4c5e592d2e1033c93970a2929dfca0d627d61616bc5fb4ad1ac9dba6596d5fa40df2158a5c4febbb637b62378942a8dad9bd153
SSDEEP

768:V6LsoEEeegiZPvEhHSG+gDYQtOOtEvwDpj/MLam5axZmGM:V6QFElP6n+gMQMOtEvwDpjyaYa/mv

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000c000000023b52-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000c000000023b52-12.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-1-5-21-877519540-908060166-1852957295-1000\Control Panel\International\Geo\Nation	2024-04-29_fbb3a094af0f0695f3af0e0756550b82_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3632	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 2724 wrote to memory of 3632	2724	2024-04-29_fbb3a094af0f0695f3af0e0756550b82_cryptolocker.exe	83
PID 2724 wrote to memory of 3632	2724	2024-04-29_fbb3a094af0f0695f3af0e0756550b82_cryptolocker.exe	83
PID 2724 wrote to memory of 3632	2724	2024-04-29_fbb3a094af0f0695f3af0e0756550b82_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-04-29_fbb3a094af0f0695f3af0e0756550b82_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-29_fbb3a094af0f0695f3af0e0756550b82_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2724
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3632

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
ddca096cf9a55a4556b7915057e87add

SHA1
5c630ab775b43335f56c25a569dc065c88119418

SHA256
d638e02640754e93e8a4d518125e3eb27f451617d9cfbcf64ea952abf1fd5149

SHA512
a9ee8eba2914a6798d8bcb87121294286bc344a5159fb9b3569c7c121387e04468143c7cd63de3ea0fea67b0fab3abce006fdd6c46ac98730bf2b750e7850ce7

Download Submit
memory/2724-0-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/2724-1-0x00000000006D0000-0x00000000006D6000-memory.dmp

Filesize
24KB

Download
memory/2724-8-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/3632-17-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download