f79938c459fac7b79b1f0f5a580a79e09935792818577247c18c78208630756b

Analysis

max time kernel
130s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
05-04-2024 20:30

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-04-05_3eb8049c670427c5cbfae76a3d8617a8_cryptolocker.exe
Size

68KB
MD5

3eb8049c670427c5cbfae76a3d8617a8
SHA1

380a283ec58103e18fa80031cc03dd13e4951691
SHA256

f79938c459fac7b79b1f0f5a580a79e09935792818577247c18c78208630756b
SHA512

319c7c15deed62339126cf8b444076380090d5b0523afdea39043d46823b497d20e57b44d41cd3079eb70230eba35b849f16a8379d7d58c8e458903a0d7d5663
SSDEEP

1536:Dk/xY0sllyGQMOtEvwDpjwycDtKkQZQRKb61vSbgZ3QzNKUl:DW60sllyWOtEvwDpjwF85r

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/4860-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000700000002321a-13.dat	CryptoLocker_rule2
behavioral2/memory/1512-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4860-18-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/4860-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000700000002321a-13.dat	CryptoLocker_set1
behavioral2/memory/1512-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4860-18-0x0000000000500000-0x000000000050B000-memory.dmp	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-1-5-21-513485977-2495024337-1260977654-1000\Control Panel\International\Geo\Nation	2024-04-05_3eb8049c670427c5cbfae76a3d8617a8_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1512	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 4860 wrote to memory of 1512	4860	2024-04-05_3eb8049c670427c5cbfae76a3d8617a8_cryptolocker.exe	89
PID 4860 wrote to memory of 1512	4860	2024-04-05_3eb8049c670427c5cbfae76a3d8617a8_cryptolocker.exe	89
PID 4860 wrote to memory of 1512	4860	2024-04-05_3eb8049c670427c5cbfae76a3d8617a8_cryptolocker.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-04-05_3eb8049c670427c5cbfae76a3d8617a8_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-05_3eb8049c670427c5cbfae76a3d8617a8_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4860
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1512

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
68KB

MD5
9f157bb448136b84ec322ebbda20029c

SHA1
f980950f2daa12e2e6411a127e28a90d903def63

SHA256
7872cea46b513eb88160a5f337ebd464ee946ae114443d2bbf4715caa9bfb68a

SHA512
adb18475e34ecda994e5fe0b08ed21f1ea271cf21ebb196cfc0a34b8b4a3b953e6912dada2e485fd1eb40b4c3fad7fce76da5ded8971f36c8e802060429bd8a8

Download Submit
memory/1512-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/1512-21-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/1512-20-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/4860-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/4860-1-0x0000000002050000-0x0000000002056000-memory.dmp

Filesize
24KB

Download
memory/4860-2-0x0000000002050000-0x0000000002056000-memory.dmp

Filesize
24KB

Download
memory/4860-3-0x0000000002070000-0x0000000002076000-memory.dmp

Filesize
24KB

Download
memory/4860-18-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download