56a752d161b377c687d7c2d6608eb0b47a29749d8d1a71bcc78100cb0a4d8f82

Analysis

max time kernel
141s
max time network
124s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
09/05/2024, 19:03

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General

Target

2024-05-09_4cd3b36fc83a6644dba510ca1a744bdb_cryptolocker.exe
Size

34KB
MD5

4cd3b36fc83a6644dba510ca1a744bdb
SHA1

bf31d071a7b009d7e5fd4108eb4ea0371dc8ef4d
SHA256

56a752d161b377c687d7c2d6608eb0b47a29749d8d1a71bcc78100cb0a4d8f82
SHA512

73e342523a8bf8a9fc71ec1ad9e280dbc1979ef8d9628abec346bc80b5e232666274ff1306a0b7b0998494e4a08ff9ac9498ceb2ebf1c47172e19e0c24332ba1
SSDEEP

768:bxNQIE0eBhkL2Fo1CCwgfjOg9Arbkzos5D:bxNrC7kYo1Fxf2rYP

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023297-12.dat	CryptoLocker_rule2

Checks computer location settings 2 TTPs 2 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-1-5-21-4018855536-2201274732-320770143-1000\Control Panel\International\Geo\Nation	2024-05-09_4cd3b36fc83a6644dba510ca1a744bdb_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-4018855536-2201274732-320770143-1000\Control Panel\International\Geo\Nation	pissa.exe

Executes dropped EXE 1 IoCs

pid	Process
1508	pissa.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 3556 wrote to memory of 1508	3556	2024-05-09_4cd3b36fc83a6644dba510ca1a744bdb_cryptolocker.exe	83
PID 3556 wrote to memory of 1508	3556	2024-05-09_4cd3b36fc83a6644dba510ca1a744bdb_cryptolocker.exe	83
PID 3556 wrote to memory of 1508	3556	2024-05-09_4cd3b36fc83a6644dba510ca1a744bdb_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-05-09_4cd3b36fc83a6644dba510ca1a744bdb_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-09_4cd3b36fc83a6644dba510ca1a744bdb_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3556
- C:\Users\Admin\AppData\Local\Temp\pissa.exe
  "C:\Users\Admin\AppData\Local\Temp\pissa.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  PID:1508

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\pissa.exe

Filesize
34KB

MD5
a514a4566354a35fd485ad8263d33699

SHA1
a4c43491e8af5b0a15707226e89a017c33e5bf11

SHA256
0363674f9cf442ba249e10c704b8bdd6a12419ef9a9d05258c6af67d34b0a511

SHA512
2b5e2037ddcfbba0c16f309f27964598ec6a4d14009fa1ab8187469b15ea56ecdeb26245ce2b06397e5cb24185a9ec8ba0f74b65934c9e3291264a075d3b8809

Download Submit
C:\Users\Admin\AppData\Local\Temp\pissec.exe

Filesize
261B

MD5
11bed1c06d8f4680de5154405be20365

SHA1
9c3095f1aa0b02924c23592d1e86673bb0081ca1

SHA256
bcc0582f122db6e61d2aa06628275f5b882c01ca037699427d0f68e48d744666

SHA512
050bb38ff33ab7e8e8aa647cffb26d2b0a54074340e79f0acf0db8f076c421505f1e4c1ce169d55aeacd4085ce258a78d24327c9393650642963beb130517da8

Download Submit
memory/3556-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/3556-1-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download
memory/3556-8-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download