50918409db0209b52a30fcab31cb566d73c772d84fe581212a6e1071f700690e

Analysis

max time kernel
148s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240419-en
resource tags

arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
submitted
04/05/2024, 19:33

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General

Target

2024-05-04_6526e70e4962e7975fc6c5a3888e2b1e_cryptolocker.exe
Size

79KB
MD5

6526e70e4962e7975fc6c5a3888e2b1e
SHA1

1d1dffa0732a41f4754a9b59151379602e4ed993
SHA256

50918409db0209b52a30fcab31cb566d73c772d84fe581212a6e1071f700690e
SHA512

0462744a0b694dc271fd1fe57abf480a76e112bbd4971dec3e3f46b16702f10683fda16201f8c84149e665e90d90772a838c1a3ae57f91b14c9fa9f4cfcd90c2
SSDEEP

1536:V6QFElP6n+gMQMOtEvwDpjyaLccVNlupU:V6a+pOtEvwDpjvpN

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000b000000023b7f-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000b000000023b7f-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-1-5-21-877519540-908060166-1852957295-1000\Control Panel\International\Geo\Nation	2024-05-04_6526e70e4962e7975fc6c5a3888e2b1e_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4908	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 4936 wrote to memory of 4908	4936	2024-05-04_6526e70e4962e7975fc6c5a3888e2b1e_cryptolocker.exe	86
PID 4936 wrote to memory of 4908	4936	2024-05-04_6526e70e4962e7975fc6c5a3888e2b1e_cryptolocker.exe	86
PID 4936 wrote to memory of 4908	4936	2024-05-04_6526e70e4962e7975fc6c5a3888e2b1e_cryptolocker.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-05-04_6526e70e4962e7975fc6c5a3888e2b1e_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-04_6526e70e4962e7975fc6c5a3888e2b1e_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4936
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4908

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

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Downloads

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

Filesize
79KB

MD5
632c4d8cce7db74d8d524aa021a3dd50

SHA1
25cb99c645a21d29015709179185c079142360fa

SHA256
7c12419728486765e982e6f682d57e9047b12e00c18bcb6bd7385b7e1f30994c

SHA512
ce2ab2c6abc44ef4084bc880a6e90b52ad5b0b7175563ed39de34eef9f346258dbfdde11be8d5872bd242899855840704829288840b0fdd9c304692adda1dc23

Download Submit
memory/4908-17-0x0000000002070000-0x0000000002076000-memory.dmp

Filesize
24KB

Download
memory/4908-23-0x0000000002050000-0x0000000002056000-memory.dmp

Filesize
24KB

Download
memory/4936-0-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4936-1-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/4936-8-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download