4d87d962758316e5b011dbbb9007bd2144583a529760397c5dd8e58a4b585c04

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
25/05/2024, 06:41

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General

Target

2024-05-25_9f3249c398292307a82aeba21cef7752_cryptolocker.exe
Size

73KB
MD5

9f3249c398292307a82aeba21cef7752
SHA1

4264833a05a696f2e22fb1d5d0908153db252c23
SHA256

4d87d962758316e5b011dbbb9007bd2144583a529760397c5dd8e58a4b585c04
SHA512

4745c67a4f6c13199618af43ea744e15882049d96572379b194613a4bebfa5006e87bc077fde67db1d3c7b7110bc34082c429b469c418b695fe92833a6835169
SSDEEP

768:u6LsoEEeegiZPvEhHSG+gZgtOOtEvwDpjeY10Y/YMsF:u6QFElP6n+gWMOtEvwDpjJGYQbF

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023305-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023305-12.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-1-5-21-3571316656-3665257725-2415531812-1000\Control Panel\International\Geo\Nation	2024-05-25_9f3249c398292307a82aeba21cef7752_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4628	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 1468 wrote to memory of 4628	1468	2024-05-25_9f3249c398292307a82aeba21cef7752_cryptolocker.exe	83
PID 1468 wrote to memory of 4628	1468	2024-05-25_9f3249c398292307a82aeba21cef7752_cryptolocker.exe	83
PID 1468 wrote to memory of 4628	1468	2024-05-25_9f3249c398292307a82aeba21cef7752_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-05-25_9f3249c398292307a82aeba21cef7752_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-25_9f3249c398292307a82aeba21cef7752_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1468
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4628

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
74KB

MD5
77455aa31d6ff43a5c1278a538ce7bee

SHA1
9a4129ef41c45a3f5b4ef1af55d2c0fcbbeaf2be

SHA256
84240dc62feca2911d56c9d0fcb168a7edb44ddf8fdd438725475c6936b3c889

SHA512
44ef6938f770c5f0d5a5e222b5972a08a8ae5ecfa9cfd4852ce0210532e59aaa10aac1107be4b50bbcf8f55efb18d8be91b86856237af609da090ab6f545dbd5

Download Submit
memory/1468-0-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download
memory/1468-1-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download
memory/1468-2-0x0000000000680000-0x0000000000686000-memory.dmp

Filesize
24KB

Download
memory/4628-23-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/4628-17-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download