e9f059d1994fcaf41e9026c08d63899b4d10353f2c2afb15230866664fd3dcda

Analysis

max time kernel
140s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
20/02/2024, 05:49

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General

Target

2024-02-20_6507ac1c07c1572b105d3fbc68797afc_cryptolocker.exe
Size

42KB
MD5

6507ac1c07c1572b105d3fbc68797afc
SHA1

1f1877626b0e643ea7a551836b4315d138a6e03c
SHA256

e9f059d1994fcaf41e9026c08d63899b4d10353f2c2afb15230866664fd3dcda
SHA512

c06553aed442d1ede38e9580dc5748639d1991641ad534af53fff9b5f92193e24021cb7438febddc84c7faf38eadd8fa5b9079bffac64e1ebb3be61658b14619
SSDEEP

768:V6LsoEEeegiZPvEhHSG+gDYQtOOtEvwDpj/MLam5aFr7YOzzf0:V6QFElP6n+gMQMOtEvwDpjyaYaFAx

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023145-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023145-12.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-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation	2024-02-20_6507ac1c07c1572b105d3fbc68797afc_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2472	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 3508 wrote to memory of 2472	3508	2024-02-20_6507ac1c07c1572b105d3fbc68797afc_cryptolocker.exe	84
PID 3508 wrote to memory of 2472	3508	2024-02-20_6507ac1c07c1572b105d3fbc68797afc_cryptolocker.exe	84
PID 3508 wrote to memory of 2472	3508	2024-02-20_6507ac1c07c1572b105d3fbc68797afc_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-02-20_6507ac1c07c1572b105d3fbc68797afc_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-20_6507ac1c07c1572b105d3fbc68797afc_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3508
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2472

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
43KB

MD5
7866dc8259a0c950ad0e54c58b3138f2

SHA1
310a55123e102baab4c1738cf097a0a2ba836fba

SHA256
59782362fb062db79bd248d03f8d662b0977ab838e40be7cdf39f63d191451bc

SHA512
9b1476fde0f1f88ae09d88fd8ad705da7ab9823ac654b1dc66f689a075ba600bef627cca05098e53fb89af5a2e9c6966d4801804a9ce94227b92c684eef06549

Download Submit
memory/2472-17-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/2472-18-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/3508-0-0x0000000002150000-0x0000000002156000-memory.dmp

Filesize
24KB

Download
memory/3508-1-0x0000000002150000-0x0000000002156000-memory.dmp

Filesize
24KB

Download
memory/3508-2-0x0000000002070000-0x0000000002076000-memory.dmp

Filesize
24KB

Download