7a3b059fc8eb158f4cac89ae676f5148166345b9114077244f0025c8926dc197

Analysis

max time kernel
150s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
11/05/2024, 18:27

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General

Target

2024-05-11_2e586a6e2dfb922cf8478272bbb7f393_cryptolocker.exe
Size

23KB
MD5

2e586a6e2dfb922cf8478272bbb7f393
SHA1

2b1f3570065c8e2334e853a3d7d99645970156b3
SHA256

7a3b059fc8eb158f4cac89ae676f5148166345b9114077244f0025c8926dc197
SHA512

becd3c05616d9e3640ad08ea0ef947d581ba587a7582968ecbf046eb815e492461483053873d3e17b7ce45c33ff4ef16abc988fea8287a328f720b42b4d275fe
SSDEEP

384:bVCPwFRuFn65arz1ZhdaXFXSCVQTLfjDp6HjZ:bVCPwFRo6CpwXFXSqQXfjAl

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/1384-0-0x0000000008000000-0x000000000800E000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0006000000023278-13.dat	CryptoLocker_rule2
behavioral2/memory/1512-18-0x0000000008000000-0x000000000800E000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1384-17-0x0000000008000000-0x000000000800E000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1512-27-0x0000000008000000-0x000000000800E000-memory.dmp	CryptoLocker_rule2

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral2/memory/1384-0-0x0000000008000000-0x000000000800E000-memory.dmp	UPX
behavioral2/files/0x0006000000023278-13.dat	UPX
behavioral2/memory/1512-18-0x0000000008000000-0x000000000800E000-memory.dmp	UPX
behavioral2/memory/1384-17-0x0000000008000000-0x000000000800E000-memory.dmp	UPX
behavioral2/memory/1512-27-0x0000000008000000-0x000000000800E000-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-1-5-21-3558294865-3673844354-2255444939-1000\Control Panel\International\Geo\Nation	2024-05-11_2e586a6e2dfb922cf8478272bbb7f393_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1512	hasfj.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1384-0-0x0000000008000000-0x000000000800E000-memory.dmp	upx
behavioral2/files/0x0006000000023278-13.dat	upx
behavioral2/memory/1512-18-0x0000000008000000-0x000000000800E000-memory.dmp	upx
behavioral2/memory/1384-17-0x0000000008000000-0x000000000800E000-memory.dmp	upx
behavioral2/memory/1512-27-0x0000000008000000-0x000000000800E000-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 1384 wrote to memory of 1512	1384	2024-05-11_2e586a6e2dfb922cf8478272bbb7f393_cryptolocker.exe	82
PID 1384 wrote to memory of 1512	1384	2024-05-11_2e586a6e2dfb922cf8478272bbb7f393_cryptolocker.exe	82
PID 1384 wrote to memory of 1512	1384	2024-05-11_2e586a6e2dfb922cf8478272bbb7f393_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-05-11_2e586a6e2dfb922cf8478272bbb7f393_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-11_2e586a6e2dfb922cf8478272bbb7f393_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1384
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:1512

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\hasfj.exe

Filesize
24KB

MD5
1c3c76c1a8f0072450344a3941ef77e0

SHA1
d3f8651c5740342f1b9d8388cb74db6b695e0a10

SHA256
92bc83f348f4172460a94d6e45625724905ca25fcad9d301fee7368669659117

SHA512
75617bb4842ae88e0ee883d884a6939e343d53fac03f00295681778b1967f79cbeaa7f6a4bd4004753ca35903b8e82a5760d28c00fc7dd3e8a4a52a097d14989

Download Submit
memory/1384-0-0x0000000008000000-0x000000000800E000-memory.dmp

Filesize
56KB

Download
memory/1384-1-0x0000000002350000-0x0000000002356000-memory.dmp

Filesize
24KB

Download
memory/1384-2-0x00000000023C0000-0x00000000023C6000-memory.dmp

Filesize
24KB

Download
memory/1384-9-0x0000000002350000-0x0000000002356000-memory.dmp

Filesize
24KB

Download
memory/1384-17-0x0000000008000000-0x000000000800E000-memory.dmp

Filesize
56KB

Download
memory/1512-18-0x0000000008000000-0x000000000800E000-memory.dmp

Filesize
56KB

Download
memory/1512-21-0x00000000007A0000-0x00000000007A6000-memory.dmp

Filesize
24KB

Download
memory/1512-20-0x0000000000770000-0x0000000000776000-memory.dmp

Filesize
24KB

Download
memory/1512-27-0x0000000008000000-0x000000000800E000-memory.dmp

Filesize
56KB

Download