8c56cbd42258b1b0047d55974ef45c25bbe9a0295d999df969e59b63a09b57f2

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
12-02-2024 17:43

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General

Target

2024-02-12_8a1a29c28d8485c750cba844c9b8239c_cryptolocker.exe
Size

47KB
MD5

8a1a29c28d8485c750cba844c9b8239c
SHA1

ddf2d2b6b635894ec0f62bcd47d56d29801e91de
SHA256

8c56cbd42258b1b0047d55974ef45c25bbe9a0295d999df969e59b63a09b57f2
SHA512

49f384ac4fe1c9f7ab43261f4c6d4f839e1a81960370b48c265a20ceecaa6deedfecc54671331e8e28ea071cbe085401919fb20dd1464324e0923fc664f5a83a
SSDEEP

768:V6LsoEEeegiZPvEhHSG+gDYQtOOtEvwDpj/MLaHaMMm2X30E3az:V6QFElP6n+gMQMOtEvwDpjyaHaXmz

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

Processes:

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

Processes:

2024-02-12_8a1a29c28d8485c750cba844c9b8239c_cryptolocker.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\Control Panel\International\Geo\Nation	2024-02-12_8a1a29c28d8485c750cba844c9b8239c_cryptolocker.exe

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

3772 asih.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
3772	asih.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-02-12_8a1a29c28d8485c750cba844c9b8239c_cryptolocker.exe

description	pid	process	target process
PID 3556 wrote to memory of 3772	3556	2024-02-12_8a1a29c28d8485c750cba844c9b8239c_cryptolocker.exe	asih.exe
PID 3556 wrote to memory of 3772	3556	2024-02-12_8a1a29c28d8485c750cba844c9b8239c_cryptolocker.exe	asih.exe
PID 3556 wrote to memory of 3772	3556	2024-02-12_8a1a29c28d8485c750cba844c9b8239c_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-02-12_8a1a29c28d8485c750cba844c9b8239c_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-12_8a1a29c28d8485c750cba844c9b8239c_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3556

C:\Users\Admin\AppData\Local\Temp\asih.exe
"C:\Users\Admin\AppData\Local\Temp\asih.exe"
2⤵
- Executes dropped EXE
PID:3772

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
47KB

MD5
fdde5a93a09c5a1606d7db3dff9c8921

SHA1
82defa106c155846c38fc70074e2d8a51ddb1cb3

SHA256
c024796f483a547a000ed07fa7864ff585836726072091a0e41c653203bd6783

SHA512
23dd44a781d4bf7df369d451bcb5c16a4d9d1d85e65f55e212a2ad10ec75a95bf129ee0d865a09ea6a4937e242493fa3b039889d5e09139d92e8775d0825741c

Download Submit
memory/3556-0-0x0000000000570000-0x0000000000576000-memory.dmp

Filesize
24KB

Download
memory/3556-1-0x0000000000570000-0x0000000000576000-memory.dmp

Filesize
24KB

Download
memory/3556-2-0x0000000002070000-0x0000000002076000-memory.dmp

Filesize
24KB

Download
memory/3772-17-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/3772-18-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download