1f65d45c697bd28c7bc6b5f2eaa556df850bd21c17da04d7581bd33a73f2d769

Analysis

max time kernel
148s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20240221-en
resource tags

arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
submitted
24/02/2024, 04:46

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General

Target

2024-02-24_633149d7fc0fef13b41f077294936b96_cryptolocker.exe
Size

92KB
MD5

633149d7fc0fef13b41f077294936b96
SHA1

01dbce0343fcff1f6f5a22152acfab906245f494
SHA256

1f65d45c697bd28c7bc6b5f2eaa556df850bd21c17da04d7581bd33a73f2d769
SHA512

01f7c09adb8da3b396effbb5fd14301f9345fb4fbeabc2a08d8effe828e14966681e400dcb60f1c6a66ec1ccd29c726e8981e6b796f2ba349ed00d2556955213
SSDEEP

1536:qkmnpomddpMOtEvwDpjJGYQbN/PKwNgp0QVOg:AnBdOOtEvwDpj6zs

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/1168-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x00090000000231ff-13.dat	CryptoLocker_rule2
behavioral2/memory/1168-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3024-25-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/1168-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x00090000000231ff-13.dat	CryptoLocker_set1
behavioral2/memory/1168-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/3024-25-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/1168-0-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral2/files/0x00090000000231ff-13.dat	UPX
behavioral2/memory/1168-17-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral2/memory/3024-25-0x0000000000500000-0x000000000050F000-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-1-5-21-2132103209-3755304320-2959162027-1000\Control Panel\International\Geo\Nation	2024-02-24_633149d7fc0fef13b41f077294936b96_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3024	asih.exe

UPX packed file 4 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/1168-0-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/files/0x00090000000231ff-13.dat	upx
behavioral2/memory/1168-17-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/memory/3024-25-0x0000000000500000-0x000000000050F000-memory.dmp	upx

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 1168 wrote to memory of 3024	1168	2024-02-24_633149d7fc0fef13b41f077294936b96_cryptolocker.exe	91
PID 1168 wrote to memory of 3024	1168	2024-02-24_633149d7fc0fef13b41f077294936b96_cryptolocker.exe	91
PID 1168 wrote to memory of 3024	1168	2024-02-24_633149d7fc0fef13b41f077294936b96_cryptolocker.exe	91

C:\Users\Admin\AppData\Local\Temp\2024-02-24_633149d7fc0fef13b41f077294936b96_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-24_633149d7fc0fef13b41f077294936b96_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1168
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3024

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
92KB

MD5
9ab33349dffba91974b5f822f3d34f6f

SHA1
69376ee573d86488186f908c9b52b4a72e7446c4

SHA256
9e2306d4bd845dd261d71aed3ef4345a2d040ccf57d2970f072d48d324f8dcb0

SHA512
acbcd35f90200cd029b3f801de0cee4270af1c9e9b9b82a9a63a2076878110e1c9b9db7b2e47cef8dee33b9bcf3bc61963b89643f43513fb8a7c348ecddd8e6d

Download Submit
memory/1168-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1168-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/1168-2-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/1168-3-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/1168-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3024-19-0x0000000000860000-0x0000000000866000-memory.dmp

Filesize
24KB

Download
memory/3024-25-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download