075946e6897a9c1a31e4caa7ff1c5f2b0c6fa3bd7ec50c167bc8d526deadda8d

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
31-05-2024 02:26

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General

Target

2024-05-31_0e7afbb0f0f5ac291c89a8b37b34ee5a_cryptolocker.exe
Size

41KB
MD5

0e7afbb0f0f5ac291c89a8b37b34ee5a
SHA1

53ccaac2a49e8b4259d4ddbfa7fcc65d98ab81be
SHA256

075946e6897a9c1a31e4caa7ff1c5f2b0c6fa3bd7ec50c167bc8d526deadda8d
SHA512

077068b4c6616b411e5b16a3bc91ccdfabb5f37140417c9fabcb06859c7cef84fdbb521cd4d73fd79175e319157bf850824bfd4a7d5f6ed04c58050fa925b4e4
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBaac4HK/wSvuQTCyD/95i:X6QFElP6n+gJQMOtEvwDpjBsYK/fbDFI

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0009000000023297-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0009000000023297-12.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-1-5-21-4018855536-2201274732-320770143-1000\Control Panel\International\Geo\Nation	2024-05-31_0e7afbb0f0f5ac291c89a8b37b34ee5a_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4616	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 840 wrote to memory of 4616	840	2024-05-31_0e7afbb0f0f5ac291c89a8b37b34ee5a_cryptolocker.exe	82
PID 840 wrote to memory of 4616	840	2024-05-31_0e7afbb0f0f5ac291c89a8b37b34ee5a_cryptolocker.exe	82
PID 840 wrote to memory of 4616	840	2024-05-31_0e7afbb0f0f5ac291c89a8b37b34ee5a_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-05-31_0e7afbb0f0f5ac291c89a8b37b34ee5a_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-31_0e7afbb0f0f5ac291c89a8b37b34ee5a_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:840
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4616

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
42KB

MD5
baf25c02fff7714797893cbd209fdd4c

SHA1
62c38b5c3efc25e514eca3b4d0a157617b4f7e60

SHA256
3bd4b2fe1392f8f7cb67babd43b5b14109deab947e9916f0bad1835e1ab532c1

SHA512
0122c0958ef692c3016042b5a6f33320a870187b12471515f90a72f2a7ad36a751cbd7da4da54b4977f58713344074fcc3ce1f4d3f4755dfd4c427bd20764e81

Download Submit
memory/840-0-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/840-1-0x0000000000760000-0x0000000000766000-memory.dmp

Filesize
24KB

Download
memory/840-8-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/4616-17-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download