84b2eacf23ff79ca2d81a1ff905d9ca23c5eeaf2e9df195db7c3615c4a9fca4f

Analysis

max time kernel
171s
max time network
183s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
10/03/2024, 09:52

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General

Target

2024-03-10_f8708d184ab613226c80a2715e8e4af3_cryptolocker.exe
Size

58KB
MD5

f8708d184ab613226c80a2715e8e4af3
SHA1

e20fcc78028ce77ce7d4c210a1060c911f3eae69
SHA256

84b2eacf23ff79ca2d81a1ff905d9ca23c5eeaf2e9df195db7c3615c4a9fca4f
SHA512

c7bdce7d062ab5498b36f7e764c3be8c0fa42415ae1d3b290ed65ee5995dbd5933462b936feab94cefd334756c8b9a27844856c6324081d139d134ab7f4a6320
SSDEEP

768:V6LsoEEeegiZPvEhHSG+gDYQtOOtEvwDpj/MLa5VccPt547/2VoJ:V6QFElP6n+gMQMOtEvwDpjyaLccVCbH

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023239-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023239-12.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-1-5-21-609813121-2907144057-1731107329-1000\Control Panel\International\Geo\Nation	2024-03-10_f8708d184ab613226c80a2715e8e4af3_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3968	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 1096 wrote to memory of 3968	1096	2024-03-10_f8708d184ab613226c80a2715e8e4af3_cryptolocker.exe	93
PID 1096 wrote to memory of 3968	1096	2024-03-10_f8708d184ab613226c80a2715e8e4af3_cryptolocker.exe	93
PID 1096 wrote to memory of 3968	1096	2024-03-10_f8708d184ab613226c80a2715e8e4af3_cryptolocker.exe	93

C:\Users\Admin\AppData\Local\Temp\2024-03-10_f8708d184ab613226c80a2715e8e4af3_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-10_f8708d184ab613226c80a2715e8e4af3_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1096
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3968

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
58KB

MD5
359a07b603a791c13c304479b5d812e7

SHA1
b5555621d0af127266165e453f4209d635b6962e

SHA256
8c2d75afe52ec37e66a4420bb948467a47562aef8dae74a72ef8051076a51118

SHA512
c4beba1e06751a267a06722deb54e62a5cc6e41a50d1ac2c811004ac4d740d11e9907b8dca5196cea7e668242c2422db9ff16abc36ffab0f27dc072dee7adc67

Download Submit
memory/1096-0-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/1096-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/1096-2-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/3968-17-0x0000000002100000-0x0000000002106000-memory.dmp

Filesize
24KB

Download
memory/3968-20-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download