d6132e4eb467a78a6d8c7a9b44c892a153f829ffadcd424dd4ca9fbe7e7b8fff

Analysis

max time kernel
148s
max time network
149s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
27/03/2024, 03:41

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General

Target

2024-03-27_4cf099194ac1ab513a10ab1946b78595_cryptolocker.exe
Size

85KB
MD5

4cf099194ac1ab513a10ab1946b78595
SHA1

928634ad1ce7c559d3e07236cdb2a7ff20880260
SHA256

d6132e4eb467a78a6d8c7a9b44c892a153f829ffadcd424dd4ca9fbe7e7b8fff
SHA512

69f0d994fdab7de0e263a269249ec7f50fa533033b77cf2a8c084f75ac2ce62da3a039981e5be4e5da20e266607f6baddd2ccacd3c924975a5af9c7b2166b5e3
SSDEEP

768:qkmnjFom/kLyMro2GtOOtEvwDpjeY10Y/YMsvlMdwPK80GQuchoIgtIgj7:qkmnpomddpMOtEvwDpjJGYQbN/PKwMg9

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2336-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000b0000000122b8-11.dat	CryptoLocker_rule2
behavioral1/memory/2336-15-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1280-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1280-27-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/2336-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000b0000000122b8-11.dat	CryptoLocker_set1
behavioral1/memory/2336-15-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1280-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1280-27-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/2336-0-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral1/files/0x000b0000000122b8-11.dat	UPX
behavioral1/memory/2336-15-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral1/memory/1280-17-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral1/memory/1280-27-0x0000000000500000-0x000000000050F000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
1280	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2336	2024-03-27_4cf099194ac1ab513a10ab1946b78595_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2336-0-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/files/0x000b0000000122b8-11.dat	upx
behavioral1/memory/2336-15-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/memory/1280-17-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/memory/1280-27-0x0000000000500000-0x000000000050F000-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 4 IoCs

description	pid	Process	procid_target
PID 2336 wrote to memory of 1280	2336	2024-03-27_4cf099194ac1ab513a10ab1946b78595_cryptolocker.exe	28
PID 2336 wrote to memory of 1280	2336	2024-03-27_4cf099194ac1ab513a10ab1946b78595_cryptolocker.exe	28
PID 2336 wrote to memory of 1280	2336	2024-03-27_4cf099194ac1ab513a10ab1946b78595_cryptolocker.exe	28
PID 2336 wrote to memory of 1280	2336	2024-03-27_4cf099194ac1ab513a10ab1946b78595_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-03-27_4cf099194ac1ab513a10ab1946b78595_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-27_4cf099194ac1ab513a10ab1946b78595_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2336
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1280

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
86KB

MD5
84d8b79049c89602420295fc841d5966

SHA1
1066075c5e928ff7848989acd2ef7f359a04fc97

SHA256
23f1bc69cfcc138a3463433959db7e129fe507ba73f1e9a78a91f4f9e4752ac8

SHA512
5563acdebf340b454ebf916ad5210ec29c9e9d4c6113f80c99596568a1cb065e84dd7057badcc51c6d0255d2bfe29568daaf863201aba7dd7762a200c6f041a6

Download Submit
memory/1280-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1280-19-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/1280-21-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1280-27-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2336-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2336-1-0x0000000000440000-0x0000000000446000-memory.dmp

Filesize
24KB

Download
memory/2336-2-0x0000000000480000-0x0000000000486000-memory.dmp

Filesize
24KB

Download
memory/2336-8-0x0000000000440000-0x0000000000446000-memory.dmp

Filesize
24KB

Download
memory/2336-16-0x0000000002BC0000-0x0000000002BCF000-memory.dmp

Filesize
60KB

Download
memory/2336-15-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download