d98895867143ec5c69f3f8c9a8d1769b11380f36ac5f897ece5ae28d62eef63a

Analysis

max time kernel
149s
max time network
149s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
27-04-2024 22:37

Target

2024-04-27_91b225b22e87d262ed81052e7fee84bb_cryptolocker.exe
Size

31KB
MD5

91b225b22e87d262ed81052e7fee84bb
SHA1

1f6395ae0dd8bb10acc4861844d949c7fbd555f8
SHA256

d98895867143ec5c69f3f8c9a8d1769b11380f36ac5f897ece5ae28d62eef63a
SHA512

2ef313de3a55f9347f0926cc8c2024adc2b260cbed5d10dae9b9932957366741cc99be40d66ee66c537f965d640bca8cf592e9e888ee0d1947fcff49889b9a3b
SSDEEP

384:bG74uGLLQRcsdeQ72ngEr4K7YmE8j60nrlwfjDUGTjA:bG74zYcgT/Ekd0ryfjfA

Score

9^/10

Detection of CryptoLocker Variants 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2928-0-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
\Users\Admin\AppData\Local\Temp\hasfj.exe	CryptoLocker_rule2
behavioral1/memory/2928-15-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2852-16-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2852-26-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

Processes:

hasfj.exe

pid process

2852 hasfj.exe
Loads dropped DLL 1 IoCs

Processes:

2024-04-27_91b225b22e87d262ed81052e7fee84bb_cryptolocker.exe

pid process

2928 2024-04-27_91b225b22e87d262ed81052e7fee84bb_cryptolocker.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2852	hasfj.exe

pid	process
2928	2024-04-27_91b225b22e87d262ed81052e7fee84bb_cryptolocker.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

2024-04-27_91b225b22e87d262ed81052e7fee84bb_cryptolocker.exe

description	pid	process	target process
PID 2928 wrote to memory of 2852	2928	2024-04-27_91b225b22e87d262ed81052e7fee84bb_cryptolocker.exe	hasfj.exe
PID 2928 wrote to memory of 2852	2928	2024-04-27_91b225b22e87d262ed81052e7fee84bb_cryptolocker.exe	hasfj.exe
PID 2928 wrote to memory of 2852	2928	2024-04-27_91b225b22e87d262ed81052e7fee84bb_cryptolocker.exe	hasfj.exe
PID 2928 wrote to memory of 2852	2928	2024-04-27_91b225b22e87d262ed81052e7fee84bb_cryptolocker.exe	hasfj.exe

C:\Users\Admin\AppData\Local\Temp\hasfj.exe
"C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
2⤵
- Executes dropped EXE
PID:2852

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

\Users\Admin\AppData\Local\Temp\hasfj.exe
Filesize
31KB

MD5
f38631670ad242efb655ca7f71b63306

SHA1
18ce9841d2f724eec5f049a507e59e0b5f4808c4

SHA256
fe5ad1d1f7e131a4a4b2b36fd2990fb4eb299365f9701128dd8bec5c20e28693

SHA512
2fecef7656b7652442f8cc19d41bd6d9da4aadd5c42d3d6d3babb65666ec40378efc78dc973f8d0cfbbac8aace984f8bc2241539d53b154bcd7576eb6fdccacc

Download Submit
memory/2852-16-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/2852-18-0x0000000001CF0000-0x0000000001CF6000-memory.dmp

Filesize
24KB

Download
memory/2852-25-0x0000000001CA0000-0x0000000001CA6000-memory.dmp

Filesize
24KB

Download
memory/2852-26-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/2928-0-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/2928-2-0x00000000002E0000-0x00000000002E6000-memory.dmp

Filesize
24KB

Download
memory/2928-1-0x00000000002D0000-0x00000000002D6000-memory.dmp

Filesize
24KB

Download
memory/2928-9-0x00000000002D0000-0x00000000002D6000-memory.dmp

Filesize
24KB

Download
memory/2928-15-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download