4d129ddfe9a50c923b9b1da901804967c08d7cd89dd2d7a12218af91726c1d8a

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
02/06/2024, 10:38

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General

Target

2024-06-02_f3a103158af44cf47a349bc592e1d13f_cryptolocker.exe
Size

37KB
MD5

f3a103158af44cf47a349bc592e1d13f
SHA1

f937a8450f293e96a31e7ccb037fbb3faf10e14d
SHA256

4d129ddfe9a50c923b9b1da901804967c08d7cd89dd2d7a12218af91726c1d8a
SHA512

0661599f3ba5b93e13c3d868b398d7feacb22b3a57a1dc356a73b9332c89246ae1aa50aadf777d62b7f68ccb0b439d65b534595c25532124ac6dd49fa3f8c96f
SSDEEP

384:bA74uGLLQRcsdeQ72ngEr4K7YmE8j60nrlwfjDUgIunIVpeNs23mAA6lxZgHHaP:bA74zYcgT/Ekd0ryfjPIunqpeNswm69

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00050000000232a4-12.dat	CryptoLocker_rule2

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-1-5-21-2804150937-2146708401-419095071-1000\Control Panel\International\Geo\Nation	2024-06-02_f3a103158af44cf47a349bc592e1d13f_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1548	hasfj.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 1616 wrote to memory of 1548	1616	2024-06-02_f3a103158af44cf47a349bc592e1d13f_cryptolocker.exe	83
PID 1616 wrote to memory of 1548	1616	2024-06-02_f3a103158af44cf47a349bc592e1d13f_cryptolocker.exe	83
PID 1616 wrote to memory of 1548	1616	2024-06-02_f3a103158af44cf47a349bc592e1d13f_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-06-02_f3a103158af44cf47a349bc592e1d13f_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-02_f3a103158af44cf47a349bc592e1d13f_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1616
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:1548

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\hasfj.exe

Filesize
37KB

MD5
f5aca9884ba3f2ff94567be62dad044c

SHA1
944bc65d8bdc9e40e4a04559a73e98941ec7d487

SHA256
a827a55ee93ab0562b889f4934940fc53aeaa1662127c6ade9da736f2c1b15d4

SHA512
52d5d595f4562d8dca59586fea3bc3dc0aa8655ce04a70c8c06c9f8f67ca61557764fd2f728a4171410bd1bac938d398d982db1133c5e408e71af66d870ce423

Download Submit
memory/1548-17-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download
memory/1548-23-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/1616-0-0x0000000002250000-0x0000000002256000-memory.dmp

Filesize
24KB

Download
memory/1616-8-0x0000000002250000-0x0000000002256000-memory.dmp

Filesize
24KB

Download
memory/1616-1-0x0000000002300000-0x0000000002306000-memory.dmp

Filesize
24KB

Download