6df6ed88d75bfe61d9eaff6f9eac53918be50d4fb27a374dc879de97c0a316a4

Analysis

max time kernel
1s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
18/01/2024, 23:25

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-01-18_d890da68cab63513f58f60b6e289ba05_cryptolocker.exe
Size

63KB
MD5

d890da68cab63513f58f60b6e289ba05
SHA1

1955c17c677939c0ed8e4dd2d766186cf999ebdc
SHA256

6df6ed88d75bfe61d9eaff6f9eac53918be50d4fb27a374dc879de97c0a316a4
SHA512

9835f6b29503248a04249d5c0745890dab0e008c98947db6ef95d9f1592d0a8e620d41da4b59808541cb531a9c944f960e98db24f1e9bc695fa432dcd44d303d
SSDEEP

1536:P8mnK6QFElP6n+gymddpMOtEvwDpjY6Ug:1nK6a+qdOOtEvwDpj1

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/3936-0-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000400000001e630-13.dat	CryptoLocker_rule2
behavioral2/memory/3936-17-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3264-26-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/3936-0-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000400000001e630-13.dat	CryptoLocker_set1
behavioral2/memory/3936-17-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_set1
behavioral2/memory/3264-26-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/3936-0-0x0000000000500000-0x000000000050F311-memory.dmp	UPX
behavioral2/files/0x000400000001e630-13.dat	UPX
behavioral2/memory/3936-17-0x0000000000500000-0x000000000050F311-memory.dmp	UPX
behavioral2/memory/3264-26-0x0000000000500000-0x000000000050F311-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	2024-01-18_d890da68cab63513f58f60b6e289ba05_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3264	asih.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3936-0-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral2/files/0x000400000001e630-13.dat	upx
behavioral2/memory/3936-17-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral2/memory/3264-26-0x0000000000500000-0x000000000050F311-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 3936 wrote to memory of 3264	3936	2024-01-18_d890da68cab63513f58f60b6e289ba05_cryptolocker.exe	36
PID 3936 wrote to memory of 3264	3936	2024-01-18_d890da68cab63513f58f60b6e289ba05_cryptolocker.exe	36
PID 3936 wrote to memory of 3264	3936	2024-01-18_d890da68cab63513f58f60b6e289ba05_cryptolocker.exe	36

C:\Users\Admin\AppData\Local\Temp\2024-01-18_d890da68cab63513f58f60b6e289ba05_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-18_d890da68cab63513f58f60b6e289ba05_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3936
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3264

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

Loading Replay Monitor...

Downloads

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

Filesize
63KB

MD5
e77a462c703ab2e4fbecf676fcc682eb

SHA1
79a200bb52707b4eda856f87824b956d696a661b

SHA256
e2c4f1547f5b63aa0817afcdcd8060f058095c7966eac0c157e16cfdd970fe65

SHA512
0cd8012d6b5fa03e8067503c6221089440d2f2721c49c4337a8e239d9e898ba47d8380d3972d5027d18824e211b387d1df121ebb829c59322fc13be84b4e2602

Download Submit
memory/3264-19-0x0000000002090000-0x0000000002096000-memory.dmp

Filesize
24KB

Download
memory/3264-25-0x0000000002060000-0x0000000002066000-memory.dmp

Filesize
24KB

Download
memory/3264-26-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/3936-0-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/3936-1-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/3936-2-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/3936-3-0x00000000006E0000-0x00000000006E6000-memory.dmp

Filesize
24KB

Download
memory/3936-17-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download