0aadd0e4c28a02a69fc91107323a68565330ba017dca52e37df8360565417e5a

Analysis

max time kernel
149s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
20/04/2024, 18:48

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General

Target

2024-04-20_9620d2e7d10d0fae6ec471c6cdeeb742_cryptolocker.exe
Size

106KB
MD5

9620d2e7d10d0fae6ec471c6cdeeb742
SHA1

4e981bb470d74625370d0c8a5f56fd438c419ad6
SHA256

0aadd0e4c28a02a69fc91107323a68565330ba017dca52e37df8360565417e5a
SHA512

3b10206052be47d1b855fe91fdd7f12cadbe1fb816a6ba794cfae9a5bb0af8ba63e6f8e41ccf054c901003ea2781cb93dd491bce440b6049d10c3bbe43e3ea0d
SSDEEP

1536:P8mnK6QFElP6n+gymddpMOtEvwDpjIHsalRn5iF1j6GksdEr:1nK6a+qdOOtEvwDpjQ

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/1472-0-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000300000001e9b1-13.dat	CryptoLocker_rule2
behavioral2/memory/1472-17-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3204-26-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/1472-0-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000300000001e9b1-13.dat	CryptoLocker_set1
behavioral2/memory/1472-17-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_set1
behavioral2/memory/3204-26-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/1472-0-0x0000000000500000-0x000000000050F311-memory.dmp	UPX
behavioral2/files/0x000300000001e9b1-13.dat	UPX
behavioral2/memory/1472-17-0x0000000000500000-0x000000000050F311-memory.dmp	UPX
behavioral2/memory/3204-26-0x0000000000500000-0x000000000050F311-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-1-5-21-4084619521-2220719027-1909462854-1000\Control Panel\International\Geo\Nation	2024-04-20_9620d2e7d10d0fae6ec471c6cdeeb742_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3204	asih.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1472-0-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral2/files/0x000300000001e9b1-13.dat	upx
behavioral2/memory/1472-17-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral2/memory/3204-26-0x0000000000500000-0x000000000050F311-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 1472 wrote to memory of 3204	1472	2024-04-20_9620d2e7d10d0fae6ec471c6cdeeb742_cryptolocker.exe	85
PID 1472 wrote to memory of 3204	1472	2024-04-20_9620d2e7d10d0fae6ec471c6cdeeb742_cryptolocker.exe	85
PID 1472 wrote to memory of 3204	1472	2024-04-20_9620d2e7d10d0fae6ec471c6cdeeb742_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-04-20_9620d2e7d10d0fae6ec471c6cdeeb742_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-20_9620d2e7d10d0fae6ec471c6cdeeb742_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1472
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3204

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
107KB

MD5
e3d6d692ccd84308455d0a8a082f6c60

SHA1
8194464a5eab3496928bd265882c0d126a39bd47

SHA256
e149ffe7f2115cbacfbc773e9e65b4ba34af553bdda3325260dce41d22839d6b

SHA512
2f087b51c50e89bd6dc47f9fc169a1af35c22a1afc3606fd11fb2b0963945a8ac99995afef0ae4cd022a12fded715267b77d288207db81aae46f40df081ccf4c

Download Submit
memory/1472-0-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/1472-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/1472-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/1472-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/1472-17-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/3204-19-0x0000000002100000-0x0000000002106000-memory.dmp

Filesize
24KB

Download
memory/3204-21-0x0000000000730000-0x0000000000736000-memory.dmp

Filesize
24KB

Download
memory/3204-26-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download