68ea377ec3b3745c2aa12060188f5277000ae92aaa1f4bf740ead90596b07428

Analysis

max time kernel
149s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20240221-en
resource tags

arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
submitted
21/02/2024, 20:55

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General

Target

2024-02-21_f8b3669e9f9c9bc8493d7ed3daeb6138_cryptolocker.exe
Size

68KB
MD5

f8b3669e9f9c9bc8493d7ed3daeb6138
SHA1

a998a22608e78caaa207b52c37cbe0a2d1906b05
SHA256

68ea377ec3b3745c2aa12060188f5277000ae92aaa1f4bf740ead90596b07428
SHA512

37d86f0079466c643136441c7caf1f0d6fb3495e64c232bea72723f793ddaf5c888578b5d9683e5d53f442fa07afe1454ec39df5485d0f16a21a1b1a3cc9af64
SSDEEP

1536:Dk/xY0sllyGQMOtEvwDpjwycDtKkQZQRKb61vSbgZ3QzNKUE:DW60sllyWOtEvwDpjwF852

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 3 IoCs

resource	yara_rule
behavioral2/memory/4688-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000700000002321d-13.dat	CryptoLocker_rule2
behavioral2/memory/4688-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral2/memory/4688-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000700000002321d-13.dat	CryptoLocker_set1
behavioral2/memory/4688-17-0x0000000000500000-0x000000000050B000-memory.dmp	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-1-5-21-2200714112-3788720386-2559682836-1000\Control Panel\International\Geo\Nation	2024-02-21_f8b3669e9f9c9bc8493d7ed3daeb6138_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1832	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 4688 wrote to memory of 1832	4688	2024-02-21_f8b3669e9f9c9bc8493d7ed3daeb6138_cryptolocker.exe	85
PID 4688 wrote to memory of 1832	4688	2024-02-21_f8b3669e9f9c9bc8493d7ed3daeb6138_cryptolocker.exe	85
PID 4688 wrote to memory of 1832	4688	2024-02-21_f8b3669e9f9c9bc8493d7ed3daeb6138_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-02-21_f8b3669e9f9c9bc8493d7ed3daeb6138_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-21_f8b3669e9f9c9bc8493d7ed3daeb6138_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4688
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1832

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
68KB

MD5
528bc6488dc30e3cada407c49fe4b4a1

SHA1
652498fff2939069ebc04270646ece18519a89b3

SHA256
526cc17811131f1d16801e29230e36c110681ad3180ddd4cbf1aa23f2ba56845

SHA512
b62f8384f948ea916d5f40f07c8e70cef96a6a20cd4abf8ffab28bb954cfd66fbbd707bf0be4f9394b828564d82fb5a75ebb74330b4e364da0b83622ffe90038

Download Submit
memory/1832-20-0x00000000021C0000-0x00000000021C6000-memory.dmp

Filesize
24KB

Download
memory/1832-19-0x0000000000730000-0x0000000000736000-memory.dmp

Filesize
24KB

Download
memory/4688-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/4688-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4688-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4688-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/4688-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download