eeee6cd18fe18cf40293d4597bfea7022c436fa3739cf7ea21f71cbacd5cf3b9

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
02/02/2024, 15:31

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General

Target

2024-02-02_81baf7c9d19be4c1443a7fa6a5b64563_cryptolocker.exe
Size

47KB
MD5

81baf7c9d19be4c1443a7fa6a5b64563
SHA1

3910b071d34f212cdacd090a423c16e12eed576e
SHA256

eeee6cd18fe18cf40293d4597bfea7022c436fa3739cf7ea21f71cbacd5cf3b9
SHA512

275be6db81fc9795739a817abc28c6ad6ee239133979e1c954dca73a101286e47bace7f26033c2ed3d43de2d4b87d65ac76b4ff57cf96cdbc5789c84c56e1124
SSDEEP

768:V6LsoEEeegiZPvEhHSG+gDYQtOOtEvwDpjeJQ7suIlsw92KFXckdXh:V6QFElP6n+gMQMOtEvwDpjeJQ7pojakz

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00080000000231f0-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x00080000000231f0-12.dat	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-1-5-21-3803511929-1339359695-2191195476-1000\Control Panel\International\Geo\Nation	2024-02-02_81baf7c9d19be4c1443a7fa6a5b64563_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1020	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 4756 wrote to memory of 1020	4756	2024-02-02_81baf7c9d19be4c1443a7fa6a5b64563_cryptolocker.exe	87
PID 4756 wrote to memory of 1020	4756	2024-02-02_81baf7c9d19be4c1443a7fa6a5b64563_cryptolocker.exe	87
PID 4756 wrote to memory of 1020	4756	2024-02-02_81baf7c9d19be4c1443a7fa6a5b64563_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-02-02_81baf7c9d19be4c1443a7fa6a5b64563_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-02_81baf7c9d19be4c1443a7fa6a5b64563_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4756
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1020

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
8c5ef44b90531ca58c9c93fa64a9b829

SHA1
05e83c511dc908c32f2d9d015f422ec4a9ad52cd

SHA256
820a0418c9cd45f2c4ccd8664dd3c349d426b054c9933774da1bff94e857d1f6

SHA512
e3b9d0c2faf087cbc574d57ca829aafa91d1de1642702a9cd7cc3c4a22e4bdc1051a6b0304fd3bed8bfc5f522045cb93e5204b651299c5bae0ef0369f482013a

Download Submit
memory/1020-17-0x0000000002070000-0x0000000002076000-memory.dmp

Filesize
24KB

Download
memory/1020-18-0x0000000000670000-0x0000000000676000-memory.dmp

Filesize
24KB

Download
memory/4756-0-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4756-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4756-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download