8deb4a62c6d75a4af231149b2a7e708ff892e56c69cd8b5a6a2dcc2b96bec1bf

Analysis

max time kernel
147s
max time network
148s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
22-05-2024 02:43

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General

Target

2024-05-22_a2d005f1d20479cc19c5c822c1179163_cryptolocker.exe
Size

64KB
MD5

a2d005f1d20479cc19c5c822c1179163
SHA1

02e50fa5a538d181c178306bbb65bae4d08e6812
SHA256

8deb4a62c6d75a4af231149b2a7e708ff892e56c69cd8b5a6a2dcc2b96bec1bf
SHA512

1de335c4c6213be212e07fd2a0b263d13ab4940dacdd7c2a21bc5348626bb9462b35d15d4b7bb14564aad17895dc656d37a7adad95b360a471aff790f4ededb4
SSDEEP

1536:qmbhXDmjr5MOtEvwDpj5cDtKkQZQRKb61vSbgtsin:BbdDmjr+OtEvwDpjM8y

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/808-1-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_rule2
behavioral1/memory/808-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2944-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2944-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

Processes:

resource	yara_rule
behavioral1/memory/808-1-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/808-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2944-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2944-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/808-1-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
\Users\Admin\AppData\Local\Temp\asih.exe	UPX
behavioral1/memory/808-16-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2944-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2944-27-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

2944 asih.exe
Loads dropped DLL 1 IoCs

Processes:

2024-05-22_a2d005f1d20479cc19c5c822c1179163_cryptolocker.exe

pid process

808 2024-05-22_a2d005f1d20479cc19c5c822c1179163_cryptolocker.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2944	asih.exe

pid	process
808	2024-05-22_a2d005f1d20479cc19c5c822c1179163_cryptolocker.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

2024-05-22_a2d005f1d20479cc19c5c822c1179163_cryptolocker.exe

description	pid	process	target process
PID 808 wrote to memory of 2944	808	2024-05-22_a2d005f1d20479cc19c5c822c1179163_cryptolocker.exe	asih.exe
PID 808 wrote to memory of 2944	808	2024-05-22_a2d005f1d20479cc19c5c822c1179163_cryptolocker.exe	asih.exe
PID 808 wrote to memory of 2944	808	2024-05-22_a2d005f1d20479cc19c5c822c1179163_cryptolocker.exe	asih.exe
PID 808 wrote to memory of 2944	808	2024-05-22_a2d005f1d20479cc19c5c822c1179163_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-22_a2d005f1d20479cc19c5c822c1179163_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-22_a2d005f1d20479cc19c5c822c1179163_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:808

C:\Users\Admin\AppData\Local\Temp\asih.exe
"C:\Users\Admin\AppData\Local\Temp\asih.exe"
2⤵
- Executes dropped EXE
PID:2944

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

\Users\Admin\AppData\Local\Temp\asih.exe
Filesize
64KB

MD5
75f9efc9df87f8022d3622d038bba5af

SHA1
89ba9ea7dfacccb8d92513ad64979315d5aa34b7

SHA256
4a33c72788911d608bce77fab0412c5565ef147df0f8eeebeea150c679c8c508

SHA512
53c7563eabcce2b3fa728af19fa956734f9738148e37e6c8e3660a61490a2edb8fd10e7fbbd7a0305bb73e3c857bbf22b2afec8495f64c37049e8b4ce10f2433

Download Submit
memory/808-0-0x00000000002D0000-0x00000000002D6000-memory.dmp

Filesize
24KB

Download
memory/808-1-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/808-2-0x0000000000310000-0x0000000000316000-memory.dmp

Filesize
24KB

Download
memory/808-9-0x00000000002D0000-0x00000000002D6000-memory.dmp

Filesize
24KB

Download
memory/808-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2944-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2944-19-0x0000000000380000-0x0000000000386000-memory.dmp

Filesize
24KB

Download
memory/2944-26-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2944-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download