bdd0b6357fff6008b07dc95633db5bd07a0f79ce9a4e3859053c77646fcb488a

Analysis

max time kernel
150s
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
05/03/2024, 19:28

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-03-05_1a879c98810ebec9c517a0eb34679094_cryptolocker.exe
Size

162KB
MD5

1a879c98810ebec9c517a0eb34679094
SHA1

5ab7c800a3afcb1c46ce8a42b2b6c9f0abc1b205
SHA256

bdd0b6357fff6008b07dc95633db5bd07a0f79ce9a4e3859053c77646fcb488a
SHA512

0f8f54904a9661cbc20fecdea7e99ab74329bf2698c0580ef38c3059d2f73023ac52e6615c575dec35616fd2ff26c7c8a7f4021dae63d4904cda61dcb658b29f
SSDEEP

1536:u6QFElP6n+gWMOtEvwDpjJGYQbN/PKwNgp699GNtL1emF:u6a++OtEvwDpj6zU

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000400000001e980-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000400000001e980-12.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-1-5-21-3270530367-132075249-2153716227-1000\Control Panel\International\Geo\Nation	2024-03-05_1a879c98810ebec9c517a0eb34679094_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4084	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 4984 wrote to memory of 4084	4984	2024-03-05_1a879c98810ebec9c517a0eb34679094_cryptolocker.exe	88
PID 4984 wrote to memory of 4084	4984	2024-03-05_1a879c98810ebec9c517a0eb34679094_cryptolocker.exe	88
PID 4984 wrote to memory of 4084	4984	2024-03-05_1a879c98810ebec9c517a0eb34679094_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-03-05_1a879c98810ebec9c517a0eb34679094_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-05_1a879c98810ebec9c517a0eb34679094_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4984
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4084

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
162KB

MD5
f4782042c2aa05a0069a28baf19b7f39

SHA1
760b2d7b790c94d326923dc67cf03d0ea1f7a89b

SHA256
d88543906915ebe6c55dba70450dbef25c1f022f9ac25378f908191086bdced2

SHA512
5126f96c4fb64fe4afaefb13c3ea78ee3ee2573f8fa4e3b406a773e03a7bfd1140ab7963e715acc3ba3f88b811fcb561681dc30d5ca2037e127ed3f8d6538241

Download Submit
memory/4084-17-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/4084-23-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4984-0-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download
memory/4984-1-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download
memory/4984-2-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download