4305bad2a13ef58ab48affb53294e76617257bf05cc7795cff752969a52c638c

Analysis

max time kernel
145s
max time network
169s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
25/01/2024, 04:33

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General

Target

2024-01-25_51498ba0e4b7f50b4c4d81bdfed0c360_cryptolocker.exe
Size

73KB
MD5

51498ba0e4b7f50b4c4d81bdfed0c360
SHA1

2b62412f53e2b4f7aadcec84c63f453dd981dfb8
SHA256

4305bad2a13ef58ab48affb53294e76617257bf05cc7795cff752969a52c638c
SHA512

d50471a85821dffa5d936ce6fd1a4dc708f1460684a2186a7c03683c0b77a80513d02957ffac073430affe9ba0b7dc69b7f412f92c6946c6371575a0498ec39a
SSDEEP

1536:X6QFElP6n+gJQMOtEvwDpjBZYTjipvF2bx1RK:X6a+SOtEvwDpjBZYvQd2I

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023216-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023216-12.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-1-5-21-635608581-3370340891-292606865-1000\Control Panel\International\Geo\Nation	2024-01-25_51498ba0e4b7f50b4c4d81bdfed0c360_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4948	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 3208 wrote to memory of 4948	3208	2024-01-25_51498ba0e4b7f50b4c4d81bdfed0c360_cryptolocker.exe	88
PID 3208 wrote to memory of 4948	3208	2024-01-25_51498ba0e4b7f50b4c4d81bdfed0c360_cryptolocker.exe	88
PID 3208 wrote to memory of 4948	3208	2024-01-25_51498ba0e4b7f50b4c4d81bdfed0c360_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-01-25_51498ba0e4b7f50b4c4d81bdfed0c360_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-25_51498ba0e4b7f50b4c4d81bdfed0c360_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3208
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4948

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
73KB

MD5
f98771efadf5aaf5b39cfab8ce0a7033

SHA1
1a4d029bce69981757e51da4127d781ad7d0a4b2

SHA256
4c16965771b1e166301537f09a2d5304f993f7e6b6b8894ad742b73c975fde0a

SHA512
8cb674e5a234b109d32c583418cb4dcceb0e0fd78e797503a955c88e3359ddf444ac3dd219b05f4e956dba26cbcd6ea3596c68f3ba58b5b3596475612f23f171

Download Submit
memory/3208-0-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/3208-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/3208-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/4948-17-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/4948-21-0x00000000005B0000-0x00000000005B6000-memory.dmp

Filesize
24KB

Download