fc737944d865aba9148784b78a5ddd29fa0f7da8752b74b00f77645eb375eea9

Analysis

max time kernel
150s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
16/05/2024, 21:31

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General

Target

2024-05-16_811948d0df37188fec4150cc2e2679c2_cryptolocker.exe
Size

43KB
MD5

811948d0df37188fec4150cc2e2679c2
SHA1

e61bba2385ba71e64ed8c8a370a29d972a0e4b1b
SHA256

fc737944d865aba9148784b78a5ddd29fa0f7da8752b74b00f77645eb375eea9
SHA512

5337475b33fe604d3e4791fc5691a62e467c61c6a4a9850d3e6a8688704836f217bcba5ee4dbf51d1b8ae262b4cdb578e5aefd5d5408f35d0d9af146d4aed889
SSDEEP

384:bm74uGLLQRcsdeQ72ngEr4K7YmE8uYo0nrlwfjDUrz:bm74zYcgT/Ek70ryfjW

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/3452-0-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000800000002343b-13.dat	CryptoLocker_rule2
behavioral2/memory/3452-17-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/5060-18-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/5060-26-0x0000000008000000-0x000000000800D000-memory.dmp	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-1-5-21-3906287020-2915474608-1755617787-1000\Control Panel\International\Geo\Nation	2024-05-16_811948d0df37188fec4150cc2e2679c2_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
5060	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 3452 wrote to memory of 5060	3452	2024-05-16_811948d0df37188fec4150cc2e2679c2_cryptolocker.exe	85
PID 3452 wrote to memory of 5060	3452	2024-05-16_811948d0df37188fec4150cc2e2679c2_cryptolocker.exe	85
PID 3452 wrote to memory of 5060	3452	2024-05-16_811948d0df37188fec4150cc2e2679c2_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-05-16_811948d0df37188fec4150cc2e2679c2_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-16_811948d0df37188fec4150cc2e2679c2_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3452
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:5060

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
43KB

MD5
8ccc8e7249c91d02337b2c3c41d6b269

SHA1
997315f05ac330c6969a8fa15af46690c9e6acab

SHA256
ad0fe5f997c48e4eb85efcee71a9611a11a669013dce81721abeca567f5f2f85

SHA512
f3755bdadba53c08b2db464044692af6f21159117d2d8e6aee2c5e2b876a1a15e77687b9792d78fccc260944ea1f4f63eaa6883ffa71cf10b340272194575bdf

Download Submit
memory/3452-0-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/3452-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/3452-9-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/3452-2-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download
memory/3452-17-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/5060-18-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/5060-26-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download