7463739c1f8a76bb17ccdd3545c039fbeb1bf6206226d1785ec6da6f6b8ad6c7

Analysis

max time kernel
150s
max time network
159s
platform
windows10-2004_x64
resource
win10v2004-20240221-en
resource tags

arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
submitted
23/02/2024, 02:23

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-02-23_1a8da4bf2decb881717e0ad5dbb26ef8_cryptolocker.exe
Size

68KB
MD5

1a8da4bf2decb881717e0ad5dbb26ef8
SHA1

2a79c30b6430ad10cc36d9bcad22b399e978808c
SHA256

7463739c1f8a76bb17ccdd3545c039fbeb1bf6206226d1785ec6da6f6b8ad6c7
SHA512

95c1bc82b2d7ee313c737a791d825f80df188e82d8e2f03e027cd728b3774137aa400dea33f38da63bf6787a61474f628ead11f470e396c9e16a09bceda23847
SSDEEP

1536:Dk/xY0sllyGQMOtEvwDpjwycDtKkQZQRKb61vSbgZ3QzNKU8:DW60sllyWOtEvwDpjwF85O

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/1040-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000e00000001e6fd-13.dat	CryptoLocker_rule2
behavioral2/memory/1480-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1040-18-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/1040-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000e00000001e6fd-13.dat	CryptoLocker_set1
behavioral2/memory/1480-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/memory/1040-18-0x0000000000500000-0x000000000050B000-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-1-5-21-3538781373-1545967067-4263767959-1000\Control Panel\International\Geo\Nation	2024-02-23_1a8da4bf2decb881717e0ad5dbb26ef8_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1480	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 1040 wrote to memory of 1480	1040	2024-02-23_1a8da4bf2decb881717e0ad5dbb26ef8_cryptolocker.exe	88
PID 1040 wrote to memory of 1480	1040	2024-02-23_1a8da4bf2decb881717e0ad5dbb26ef8_cryptolocker.exe	88
PID 1040 wrote to memory of 1480	1040	2024-02-23_1a8da4bf2decb881717e0ad5dbb26ef8_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-02-23_1a8da4bf2decb881717e0ad5dbb26ef8_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-23_1a8da4bf2decb881717e0ad5dbb26ef8_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1040
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1480

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

Loading Replay Monitor...

Downloads

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

Filesize
68KB

MD5
74779734561ee86159bb43288d777952

SHA1
bd0d5e0d3ef4b7116d7736680f475aeb8fb030e2

SHA256
1811961c358ebbc9923a9932d2dc10335be698a27a247f4af32f8cf1ede5c156

SHA512
f78313b62eb7dc066205706ccf947f146cf3c68965ee86d340da55145c4a0f5f58066e79aa6fe7a664043d2047cf0c0582107774e367493d991bf94bcb529c57

Download Submit
memory/1040-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/1040-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/1040-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/1040-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/1040-18-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/1480-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/1480-21-0x0000000001F50000-0x0000000001F56000-memory.dmp

Filesize
24KB

Download
memory/1480-20-0x0000000001F70000-0x0000000001F76000-memory.dmp

Filesize
24KB

Download