82e4b476ac81890aa30532df6fba854823e3edf1d584b02a7a9802488ba30dff

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240419-en
resource tags

arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
submitted
27-04-2024 05:22

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General

Target

2024-04-27_fc6d262ebb2fd3b3ada17f8919eda067_cryptolocker.exe
Size

40KB
MD5

fc6d262ebb2fd3b3ada17f8919eda067
SHA1

ab8c497dd180f01e9f3a6fd16d7e5e019d4f9252
SHA256

82e4b476ac81890aa30532df6fba854823e3edf1d584b02a7a9802488ba30dff
SHA512

45150739092357b60a6aa41cfecffa0546cd812883f5a6c32cb00220d29f6fd9cdf779a7493fae1454519703a02fc2181f7e015bbeb58178c577e997c64a8e70
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBaac4HKcfrqjM:X6QFElP6n+gJQMOtEvwDpjBsYK6rx

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000c000000023b64-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000c000000023b64-12.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-1-5-21-2860750803-256193626-1801997576-1000\Control Panel\International\Geo\Nation	2024-04-27_fc6d262ebb2fd3b3ada17f8919eda067_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3468	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 1688 wrote to memory of 3468	1688	2024-04-27_fc6d262ebb2fd3b3ada17f8919eda067_cryptolocker.exe	84
PID 1688 wrote to memory of 3468	1688	2024-04-27_fc6d262ebb2fd3b3ada17f8919eda067_cryptolocker.exe	84
PID 1688 wrote to memory of 3468	1688	2024-04-27_fc6d262ebb2fd3b3ada17f8919eda067_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-04-27_fc6d262ebb2fd3b3ada17f8919eda067_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-27_fc6d262ebb2fd3b3ada17f8919eda067_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1688
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3468

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
41KB

MD5
5c63e8b21b67354ce95de027217e94d6

SHA1
4a71a12c2fea6bc4fff87320bd564a49ca8c0b19

SHA256
6d17a19a0bd1e6b5213569a867ec726ad0afced99b1191a9773258a6c8df1e10

SHA512
a61ddd9cbb1fd1b294370e8e94cd5895fba96088e3a50dca2bea42b1a6a343efb27211b94bb7d8fcf47a34b982a054d8871f5c782f3cd28386b50539f7f6ebc7

Download Submit
memory/1688-0-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/1688-1-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/1688-8-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/3468-17-0x00000000020F0000-0x00000000020F6000-memory.dmp

Filesize
24KB

Download
memory/3468-23-0x00000000020D0000-0x00000000020D6000-memory.dmp

Filesize
24KB

Download