4c079ccf50da96b753ba0e7e38c7e194b37732c1a807a5a6c9d87de4747ffaa5

Analysis

max time kernel
148s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
21/05/2024, 18:50

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General

Target

2024-05-21_eb494cc659bacc266b0e619a71984940_cryptolocker.exe
Size

71KB
MD5

eb494cc659bacc266b0e619a71984940
SHA1

b6e05bb36df21803d6093db080054706cb7ceb05
SHA256

4c079ccf50da96b753ba0e7e38c7e194b37732c1a807a5a6c9d87de4747ffaa5
SHA512

3975ae81dfe1b0a0d4cd42598022e2c621a3a38b4197b16b3f5c9e79358b64974a54b7b1d3c15c754be0a752e3fac5364a2e3e13cc3cd795a7addd023d71d2c6
SSDEEP

1536:Dk/xY0sllyGQMOtEvwDpjwycDtKkQZQRKb61vSbgZ3QzNKUNZOa:DW60sllyWOtEvwDpjwF85Z

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/4472-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0006000000023298-13.dat	CryptoLocker_rule2
behavioral2/memory/1336-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4472-18-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/4472-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0006000000023298-13.dat	CryptoLocker_set1
behavioral2/memory/1336-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4472-18-0x0000000000500000-0x000000000050B000-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-1-5-21-1162180587-977231257-2194346871-1000\Control Panel\International\Geo\Nation	2024-05-21_eb494cc659bacc266b0e619a71984940_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1336	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 4472 wrote to memory of 1336	4472	2024-05-21_eb494cc659bacc266b0e619a71984940_cryptolocker.exe	82
PID 4472 wrote to memory of 1336	4472	2024-05-21_eb494cc659bacc266b0e619a71984940_cryptolocker.exe	82
PID 4472 wrote to memory of 1336	4472	2024-05-21_eb494cc659bacc266b0e619a71984940_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-05-21_eb494cc659bacc266b0e619a71984940_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-21_eb494cc659bacc266b0e619a71984940_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4472
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1336

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
72KB

MD5
7e81a34ecb4bb2fd9656c0482f0611bd

SHA1
2ee1d0204eff83110b6ab26f3092251fc7c2ce9a

SHA256
03d8b942f8d76a201adaa27a400341def4f89d3878b1d9dfd87444e4fff93590

SHA512
d91476dfd57b85f5063f132b7a1022825f8860080725fcfd7242de48fa2cffea7e6e747cdb4000d0b3f77941d289b3f738e43a021fed6bfc00984df577331e96

Download Submit
memory/1336-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/4472-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/4472-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4472-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/4472-9-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4472-18-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download