12439bfc474adb3f6d3439f9a157225c27bdc38a6174a16ed597815de4cbbf9a

Analysis

max time kernel
149s
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
29/05/2024, 12:32

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General

Target

2024-05-29_c4a73623176b8f8f88f7ca41e20635b9_cryptolocker.exe
Size

46KB
MD5

c4a73623176b8f8f88f7ca41e20635b9
SHA1

a9f0fd11d70a69b71b0c10a69a4073020af3cc70
SHA256

12439bfc474adb3f6d3439f9a157225c27bdc38a6174a16ed597815de4cbbf9a
SHA512

03da611281037f1e550bd841af92cbfaaaf07ed0ba322baa96aa795540fbaed06d217fe36bb6a6bec113bcf6ab4bb2f9b62dea2b538331861e3fa9644aae892a
SSDEEP

768:V6LsoEEeegiZPvEhHSG+gDYQtOOtEvwDpj/MLam5aFr7YOzzfm0EXsJmzB:V6QFElP6n+gMQMOtEvwDpjyaYaFAh3Bd

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0006000000022f1f-15.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0006000000022f1f-15.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-1-5-21-711569230-3659488422-571408806-1000\Control Panel\International\Geo\Nation	2024-05-29_c4a73623176b8f8f88f7ca41e20635b9_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
672	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 1400 wrote to memory of 672	1400	2024-05-29_c4a73623176b8f8f88f7ca41e20635b9_cryptolocker.exe	83
PID 1400 wrote to memory of 672	1400	2024-05-29_c4a73623176b8f8f88f7ca41e20635b9_cryptolocker.exe	83
PID 1400 wrote to memory of 672	1400	2024-05-29_c4a73623176b8f8f88f7ca41e20635b9_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-05-29_c4a73623176b8f8f88f7ca41e20635b9_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-29_c4a73623176b8f8f88f7ca41e20635b9_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1400
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:672

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
47KB

MD5
95f3127d5ca1845de70243cda927d41b

SHA1
3bb8099ae006d40b6b49f89ed20c4f905079037a

SHA256
8e828d95f5ae8774dbee9f74ec4333431dd64c45eae38785ec5a265241117da7

SHA512
bddf5a2a1c78ea3efb8a26f51899da92d1713fe419a68c3cab76c0ef163a80290bde7403509e3c51466aa70cc3aa5fc3bb30d7da6739c6bfddf35460cc5a22f8

Download Submit
memory/672-17-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/672-23-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/1400-1-0x0000000002060000-0x0000000002066000-memory.dmp

Filesize
24KB

Download
memory/1400-8-0x0000000002150000-0x0000000002156000-memory.dmp

Filesize
24KB

Download
memory/1400-0-0x0000000002150000-0x0000000002156000-memory.dmp

Filesize
24KB

Download