7e5939fa7d295e550eea03c48fb631d4f531707a6bd419f908ecac01bf55ad6b

Analysis

max time kernel
148s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
18-02-2024 16:49

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-02-18_ac2d3f51fd998cb51afe0ba0effb4717_cryptolocker.exe
Size

48KB
MD5

ac2d3f51fd998cb51afe0ba0effb4717
SHA1

b180a123f459edb6b6add91853d79dcfbff74450
SHA256

7e5939fa7d295e550eea03c48fb631d4f531707a6bd419f908ecac01bf55ad6b
SHA512

05f47e9405da48f0d91d3c084bc62780bff138d3e6830dda319e8de0780123f4be4c2dbbc97d8a7bc4528978a2060030dc849c339162df434c9e14a9e5583657
SSDEEP

768:qmOKYQDf5XdrDmjr5tOOtEvwDpjAajFEitQbDmoSQCVUBJUkQqAHBIG05WTB52zg:qmbhXDmjr5MOtEvwDpj5cDtKkQZQ6u8

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/3044-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0008000000023209-13.dat	CryptoLocker_rule2
behavioral2/memory/3044-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/896-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/896-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral2/memory/3044-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/896-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/896-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral2/memory/3044-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/files/0x0008000000023209-13.dat	UPX
behavioral2/memory/3044-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/896-18-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/896-27-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

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-1-5-21-1497073144-2389943819-3385106915-1000\Control Panel\International\Geo\Nation	2024-02-18_ac2d3f51fd998cb51afe0ba0effb4717_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
896	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 3044 wrote to memory of 896	3044	2024-02-18_ac2d3f51fd998cb51afe0ba0effb4717_cryptolocker.exe	84
PID 3044 wrote to memory of 896	3044	2024-02-18_ac2d3f51fd998cb51afe0ba0effb4717_cryptolocker.exe	84
PID 3044 wrote to memory of 896	3044	2024-02-18_ac2d3f51fd998cb51afe0ba0effb4717_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-02-18_ac2d3f51fd998cb51afe0ba0effb4717_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-18_ac2d3f51fd998cb51afe0ba0effb4717_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3044
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:896

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
48KB

MD5
4aa769b07175e25a9171ed539934e85c

SHA1
287bb7ac9cdb9d2c630df9c822e81940d5d32b4e

SHA256
f799075c4e3133ffea2186ffa101fc8fe90d9cd1cd03ad0cd940efca8e399c34

SHA512
aa1d6b2f51b3355f1a49c661328e9d1677f9a5edd58bfa1221c6980d7888ad83276fd96e5ef2351b90c4de1372f8b3aeffd437e45320d17dea0e985754ab4926

Download Submit
memory/896-18-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/896-20-0x00000000005D0000-0x00000000005D6000-memory.dmp

Filesize
24KB

Download
memory/896-22-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/896-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3044-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3044-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/3044-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/3044-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/3044-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download