b9bcb4f3cea631934d2139b4a266d5b9d01d014befb5c9bbe66e6e1c24352ff3

Analysis

max time kernel
149s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
20-03-2024 01:42

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General

Target

2024-03-20_4eddf27e769631aa78031c7ea4fb2aba_cryptolocker.exe
Size

39KB
MD5

4eddf27e769631aa78031c7ea4fb2aba
SHA1

665da9e7a87091003727fbfee61774e55fc814de
SHA256

b9bcb4f3cea631934d2139b4a266d5b9d01d014befb5c9bbe66e6e1c24352ff3
SHA512

d93287a15b8a7b50e207185d07579a7f903e0404cf6e0e0baedaa8e307fc7e2ad8f9d47f00e3708749d781d6c6c50dc04c1daa1cd1bbd89cb5f003616bdc0511
SSDEEP

768:UEEmoQDj/xnMp+yptndwe/PWQtOOtEvwDpjLenQLJJEF:ZzFbxmLPWQMOtEvwDpjLeU3EF

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000400000001e980-13.dat	CryptoLocker_rule2

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-1-5-21-3270530367-132075249-2153716227-1000\Control Panel\International\Geo\Nation	2024-03-20_4eddf27e769631aa78031c7ea4fb2aba_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4040	misid.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 632 wrote to memory of 4040	632	2024-03-20_4eddf27e769631aa78031c7ea4fb2aba_cryptolocker.exe	89
PID 632 wrote to memory of 4040	632	2024-03-20_4eddf27e769631aa78031c7ea4fb2aba_cryptolocker.exe	89
PID 632 wrote to memory of 4040	632	2024-03-20_4eddf27e769631aa78031c7ea4fb2aba_cryptolocker.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-03-20_4eddf27e769631aa78031c7ea4fb2aba_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-20_4eddf27e769631aa78031c7ea4fb2aba_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:632
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:4040

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\misid.exe

Filesize
39KB

MD5
49119dd1d2bcbc3447ce73a6001820b8

SHA1
c10d6126852613bde6cccfab23fec08426f97998

SHA256
7e6be3c99722da7793eb64127f57d8db64c56e0ee802907f498ea56218be5fd8

SHA512
58546213a73f77f02242e3d2719584a605f3379410a9af2b5b1dd3119e1cd440219333a9ab468416fb16a717bd0a459b96db9bc73f2a0fb04440b88f1c9b6678

Download Submit
memory/632-0-0x00000000004F0000-0x00000000004F3000-memory.dmp

Filesize
12KB

Download
memory/632-1-0x0000000002290000-0x0000000002296000-memory.dmp

Filesize
24KB

Download
memory/632-2-0x0000000002290000-0x0000000002296000-memory.dmp

Filesize
24KB

Download
memory/632-3-0x0000000002180000-0x0000000002186000-memory.dmp

Filesize
24KB

Download
memory/632-18-0x00000000004F0000-0x00000000004F3000-memory.dmp

Filesize
12KB

Download
memory/4040-17-0x0000000000450000-0x0000000000490000-memory.dmp

Filesize
256KB

Download
memory/4040-20-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/4040-22-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4040-27-0x0000000000450000-0x0000000000490000-memory.dmp

Filesize
256KB

Download