f25f12098ab431c5191bf168daa27265710f8cbcdd807c6f95fed4dd622dbb6a

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
13/02/2024, 12:45

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General

Target

2024-02-13_5b04b3c707c96fd645e2eb294ed88cd1_cryptolocker.exe
Size

94KB
MD5

5b04b3c707c96fd645e2eb294ed88cd1
SHA1

4515c6b9c98999aecba122377b0c151a8a38a025
SHA256

f25f12098ab431c5191bf168daa27265710f8cbcdd807c6f95fed4dd622dbb6a
SHA512

9d889d1d51ff9d43e0c119eb371630b68410ee41c6c7ae8d9d06792a2115bf582ec0e36f380074e7c2f20cd80e6c56cb02f78ec0376eef5f4ec9aaaef3d36bff
SSDEEP

1536:Z6QFElP6n+gMQMOtEvwDpjQGYQbN/PKwNC4w2w:Z6a+pOtEvwDpjtzk

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000002322f-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000002322f-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-1-5-21-3803511929-1339359695-2191195476-1000\Control Panel\International\Geo\Nation	2024-02-13_5b04b3c707c96fd645e2eb294ed88cd1_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2888	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 2036 wrote to memory of 2888	2036	2024-02-13_5b04b3c707c96fd645e2eb294ed88cd1_cryptolocker.exe	83
PID 2036 wrote to memory of 2888	2036	2024-02-13_5b04b3c707c96fd645e2eb294ed88cd1_cryptolocker.exe	83
PID 2036 wrote to memory of 2888	2036	2024-02-13_5b04b3c707c96fd645e2eb294ed88cd1_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-02-13_5b04b3c707c96fd645e2eb294ed88cd1_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-13_5b04b3c707c96fd645e2eb294ed88cd1_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2036
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2888

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
94KB

MD5
40476bb384f413cc470d2bfea8ab4cc6

SHA1
f1adfaa9fd6898332a14aec674a1f76400b5b10d

SHA256
df1ef3789d2c945f19b4de605085df4bcbbdcf5c96bb861bfcb04ffa833c3657

SHA512
04e2fc24da7883a9ae51cadbd88036c6ff459b5c602992e8be32c81a3aa31e847d5fd86747a5053c9725b5987f9b9010d563031e295cd44db2edbcfecd414ff7

Download Submit
memory/2036-0-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/2036-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/2036-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/2888-17-0x00000000006D0000-0x00000000006D6000-memory.dmp

Filesize
24KB

Download
memory/2888-19-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download