a0400ab0e39581dd3485afa67232a2b5ace00fea4da3a4cca00a8c6e0e05e20f

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
14/03/2024, 07:39

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-03-14_683b345c285ef3e3a2b5947ad64fb2eb_cryptolocker.exe
Size

62KB
MD5

683b345c285ef3e3a2b5947ad64fb2eb
SHA1

1ae187cdab72f1671b5abab648b139c9cc4c0564
SHA256

a0400ab0e39581dd3485afa67232a2b5ace00fea4da3a4cca00a8c6e0e05e20f
SHA512

5db6b3ba49a59fbf34c3de34f3499f00446827679fae52c382a6084d50888acb30600ffc68a10e9dc439f5d69006230dba8ed76dafc207a71908a3e76fdc38b6
SSDEEP

1536:qmbhXDmjr5MOtEvwDpj5cDtKkQZQRKb61vSbgtstg:BbdDmjr+OtEvwDpjM8O

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/3288-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000400000001e5eb-13.dat	CryptoLocker_rule2
behavioral2/memory/3288-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2984-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 2 IoCs

resource	yara_rule
behavioral2/memory/3288-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/2984-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/3288-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/files/0x000400000001e5eb-13.dat	UPX
behavioral2/memory/3288-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/2984-26-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

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-1-5-21-983155329-280873152-1838004294-1000\Control Panel\International\Geo\Nation	2024-03-14_683b345c285ef3e3a2b5947ad64fb2eb_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2984	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 3288 wrote to memory of 2984	3288	2024-03-14_683b345c285ef3e3a2b5947ad64fb2eb_cryptolocker.exe	89
PID 3288 wrote to memory of 2984	3288	2024-03-14_683b345c285ef3e3a2b5947ad64fb2eb_cryptolocker.exe	89
PID 3288 wrote to memory of 2984	3288	2024-03-14_683b345c285ef3e3a2b5947ad64fb2eb_cryptolocker.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-03-14_683b345c285ef3e3a2b5947ad64fb2eb_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-14_683b345c285ef3e3a2b5947ad64fb2eb_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3288
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2984

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

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
62KB

MD5
56ec42a1fea5fb8dc05a9cda8f5a6606

SHA1
8f02f4a9dd46a94f183a5bc191882bcd3601e586

SHA256
ce43368254490426408130ac5282263c5071f6fe197b45a42d789919292f0f60

SHA512
04fb226c7a03e508c980db7e62a59732d3aff436e45196d4b006fd626d17bcd114d3c65f04a17ecc0f2f5a4a4701f3ba4de2f112244c09d293f707c35192d904

Download Submit
memory/2984-20-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/2984-19-0x0000000001F30000-0x0000000001F36000-memory.dmp

Filesize
24KB

Download
memory/2984-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3288-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3288-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/3288-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/3288-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/3288-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download