a216f2b1bfb8feab528d608bdd8a26f5ff039d6376e2e8e857ed5f91c665885c

Analysis

max time kernel
137s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
18/02/2024, 08:32

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General

Target

2024-02-18_43d564df63c962392849a71bf4dcf5d0_cryptolocker.exe
Size

52KB
MD5

43d564df63c962392849a71bf4dcf5d0
SHA1

7b7b33128305cb2d799f8021ab2bdbf3b2483b59
SHA256

a216f2b1bfb8feab528d608bdd8a26f5ff039d6376e2e8e857ed5f91c665885c
SHA512

428f8bc1a427d6b93dd72ac2c6f55b45efaedc927749759b41af6af93857b64f0501fe6886aac8c0f1f124902e62ed5e8202ecbeb7fcb61a108612d1fc541ec5
SSDEEP

1536:V6QFElP6n+gMQMOtEvwDpjeJQ7pojaklrH:V6a+pOtEvwDpjU

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023127-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023127-12.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-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation	2024-02-18_43d564df63c962392849a71bf4dcf5d0_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1932	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 792 wrote to memory of 1932	792	2024-02-18_43d564df63c962392849a71bf4dcf5d0_cryptolocker.exe	83
PID 792 wrote to memory of 1932	792	2024-02-18_43d564df63c962392849a71bf4dcf5d0_cryptolocker.exe	83
PID 792 wrote to memory of 1932	792	2024-02-18_43d564df63c962392849a71bf4dcf5d0_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-02-18_43d564df63c962392849a71bf4dcf5d0_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-18_43d564df63c962392849a71bf4dcf5d0_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:792
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1932

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
52KB

MD5
16a266e55395a64900191928de90c271

SHA1
7aac7b2d53df68c908ae2b535d67a1676172ec50

SHA256
bf0ad17f404e5abc17f400678b3d83d91fcc37577fadca99b3a23e1a90885293

SHA512
54d3882d5d07739e91d83eb4ba7226204c882e24b2a90e004f9952cc5be73e7c7398bbbd3d0f775aa410d7854307016a98f51a659aab7679e7115d3407f6e35b

Download Submit
memory/792-0-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/792-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/792-2-0x00000000007D0000-0x00000000007D6000-memory.dmp

Filesize
24KB

Download
memory/1932-17-0x00000000020F0000-0x00000000020F6000-memory.dmp

Filesize
24KB

Download
memory/1932-23-0x00000000020D0000-0x00000000020D6000-memory.dmp

Filesize
24KB

Download