825048ee09ea3271c0eca8d2998d54a5171b6b7706473182ac0a732409fd9556

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, 00:25

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General

Target

2024-02-02_469179b275a0c076c120a5caeea072b6_cryptolocker.exe
Size

104KB
MD5

469179b275a0c076c120a5caeea072b6
SHA1

993cf1f2c3bdeb302fc550847e537908a3a07151
SHA256

825048ee09ea3271c0eca8d2998d54a5171b6b7706473182ac0a732409fd9556
SHA512

bdfe2e1f69d141d4730b80735196004decdddc5a960d9118b262992c94adf516a5cfaf7079dbb346cc2e4e566e2d9938387a85a47d95b95851e019749dd3f36e
SSDEEP

1536:P8mnK6QFElP6n+gymddpMOtEvwDpjIHsalRn5iF1j6GksuS:1nK6a+qdOOtEvwDpjb

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/4616-0-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x00070000000231f5-13.dat	CryptoLocker_rule2
behavioral2/memory/4616-17-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3312-26-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/4616-0-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_set1
behavioral2/files/0x00070000000231f5-13.dat	CryptoLocker_set1
behavioral2/memory/4616-17-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_set1
behavioral2/memory/3312-26-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/4616-0-0x0000000000500000-0x000000000050F311-memory.dmp	UPX
behavioral2/files/0x00070000000231f5-13.dat	UPX
behavioral2/memory/4616-17-0x0000000000500000-0x000000000050F311-memory.dmp	UPX
behavioral2/memory/3312-26-0x0000000000500000-0x000000000050F311-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-1-5-21-1168293393-3419776239-306423207-1000\Control Panel\International\Geo\Nation	2024-02-02_469179b275a0c076c120a5caeea072b6_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3312	asih.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4616-0-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral2/files/0x00070000000231f5-13.dat	upx
behavioral2/memory/4616-17-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral2/memory/3312-26-0x0000000000500000-0x000000000050F311-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 4616 wrote to memory of 3312	4616	2024-02-02_469179b275a0c076c120a5caeea072b6_cryptolocker.exe	85
PID 4616 wrote to memory of 3312	4616	2024-02-02_469179b275a0c076c120a5caeea072b6_cryptolocker.exe	85
PID 4616 wrote to memory of 3312	4616	2024-02-02_469179b275a0c076c120a5caeea072b6_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-02-02_469179b275a0c076c120a5caeea072b6_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-02_469179b275a0c076c120a5caeea072b6_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4616
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3312

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
104KB

MD5
c511fc20b3d192e85b9ae29dd74ffcff

SHA1
5ce43eeac59116a9ce61e0296c9ba0b57356e2b2

SHA256
556a59d36174caa8b78a36f7e10b45f2561ca88a66006fd82c85087e55d99a0c

SHA512
96321d65e2072fb4a4c63eb34c84243ba9d0ded0f464c1ed3cb2d933c5c0ad321d588fb993f1bbb36243c46504f624fc92a952c5d1eb798c1f23d47b23ab154f

Download Submit
memory/3312-19-0x00000000005C0000-0x00000000005C6000-memory.dmp

Filesize
24KB

Download
memory/3312-22-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/3312-26-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/4616-0-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/4616-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4616-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4616-3-0x0000000002080000-0x0000000002086000-memory.dmp

Filesize
24KB

Download
memory/4616-17-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download