eae9bb5437f20139e532ce842ed855440db14e80870ba95e0647af83b59dbd4e

Analysis

max time kernel
149s
max time network
153s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
12-02-2024 20:22

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General

Target

2024-02-12_d296d855d7ae94e23074395e09ca6896_cryptolocker.exe
Size

31KB
MD5

d296d855d7ae94e23074395e09ca6896
SHA1

b5f2218e6339098ae35494fca629716fc8712fa6
SHA256

eae9bb5437f20139e532ce842ed855440db14e80870ba95e0647af83b59dbd4e
SHA512

c341b750a6b3c5d4f61f018840a1c175cc47123ffd816563c996d7c3b0915fe5ca892ad64e05286852dddf25107952ba593dcfbc6d9cc90fd1be290bfe1eef23
SSDEEP

768:q0ZziOWwULueOSdE8tOOtEvwDpjeWaJIOc+jHv:q0zizzOSxMOtEvwDpj/ar1v

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/3040-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/3040-14-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_rule2
behavioral1/memory/2664-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2664-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

Processes:

resource	yara_rule
behavioral1/memory/3040-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/3040-14-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2664-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2664-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/3040-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/3040-14-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
\Users\Admin\AppData\Local\Temp\asih.exe	UPX
behavioral1/memory/2664-16-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2664-26-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

2664 asih.exe
Loads dropped DLL 1 IoCs

Processes:

2024-02-12_d296d855d7ae94e23074395e09ca6896_cryptolocker.exe

pid process

3040 2024-02-12_d296d855d7ae94e23074395e09ca6896_cryptolocker.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2664	asih.exe

pid	process
3040	2024-02-12_d296d855d7ae94e23074395e09ca6896_cryptolocker.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

2024-02-12_d296d855d7ae94e23074395e09ca6896_cryptolocker.exe

description	pid	process	target process
PID 3040 wrote to memory of 2664	3040	2024-02-12_d296d855d7ae94e23074395e09ca6896_cryptolocker.exe	asih.exe
PID 3040 wrote to memory of 2664	3040	2024-02-12_d296d855d7ae94e23074395e09ca6896_cryptolocker.exe	asih.exe
PID 3040 wrote to memory of 2664	3040	2024-02-12_d296d855d7ae94e23074395e09ca6896_cryptolocker.exe	asih.exe
PID 3040 wrote to memory of 2664	3040	2024-02-12_d296d855d7ae94e23074395e09ca6896_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-02-12_d296d855d7ae94e23074395e09ca6896_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-12_d296d855d7ae94e23074395e09ca6896_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:3040

C:\Users\Admin\AppData\Local\Temp\asih.exe
"C:\Users\Admin\AppData\Local\Temp\asih.exe"
2⤵
- Executes dropped EXE
PID:2664

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
31KB

MD5
7406a6a49acb3c6de1de56a9449db788

SHA1
398b3ac2552878dd6c375c368339755e9a0a0911

SHA256
00ebf397032c94ba8ccea28b9695d7abc4476ed19a5f327146472cc8c02dd4bc

SHA512
1ba6d529a1ea31b706c073f2d11f3df55318eb783bf4da765c0906c6564ded274faa18345ca2f59e09b50f0cceda3f5ac698168a294c4259605886a654e0e370

Download Submit
memory/2664-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2664-18-0x0000000000330000-0x0000000000336000-memory.dmp

Filesize
24KB

Download
memory/2664-19-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/2664-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3040-1-0x0000000000440000-0x0000000000446000-memory.dmp

Filesize
24KB

Download
memory/3040-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3040-3-0x0000000000440000-0x0000000000446000-memory.dmp

Filesize
24KB

Download
memory/3040-2-0x0000000000470000-0x0000000000476000-memory.dmp

Filesize
24KB

Download
memory/3040-14-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download