e826a48ef7fdebd657b83b17c6ede2fbbfef06a3788e9ea6555c0e2c8077c216

Analysis

max time kernel
148s
max time network
150s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
22-05-2024 02:39

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General

Target

2024-05-22_ec34b2584f4677f191ed9d8a26c37f03_cryptolocker.exe
Size

67KB
MD5

ec34b2584f4677f191ed9d8a26c37f03
SHA1

8cc25a5bfbae9812d346bd7ddbae7ef13deb50c2
SHA256

e826a48ef7fdebd657b83b17c6ede2fbbfef06a3788e9ea6555c0e2c8077c216
SHA512

601b569ac3550577e60b7aa5022b9c58f385a8dea9ca546b728735773bbd664f6faa467e1d48e30ffd1a1412d776bf14768deef5558e6698435f8033c01d021f
SSDEEP

768:6Qz7yVEhs9+4OR7tOOtEvwDpjLHqPOYRmNxt5I52kGEpE0P/xFIPg:6j+1NMOtEvwDpjr8ox8UDEpN/jWg

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2244-8-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
\Users\Admin\AppData\Local\Temp\misid.exe	CryptoLocker_rule2
behavioral1/memory/2716-15-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2716-24-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2244-8-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
\Users\Admin\AppData\Local\Temp\misid.exe	CryptoLocker_set1
behavioral1/memory/2716-15-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2716-24-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 4 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2244-8-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
\Users\Admin\AppData\Local\Temp\misid.exe	INDICATOR_EXE_Packed_MPress
behavioral1/memory/2716-15-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral1/memory/2716-24-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress

Executes dropped EXE 1 IoCs

Processes:

misid.exe

pid process

2716 misid.exe
Loads dropped DLL 1 IoCs

Processes:

2024-05-22_ec34b2584f4677f191ed9d8a26c37f03_cryptolocker.exe

pid process

2244 2024-05-22_ec34b2584f4677f191ed9d8a26c37f03_cryptolocker.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2716	misid.exe

pid	process
2244	2024-05-22_ec34b2584f4677f191ed9d8a26c37f03_cryptolocker.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

2024-05-22_ec34b2584f4677f191ed9d8a26c37f03_cryptolocker.exe

description	pid	process	target process
PID 2244 wrote to memory of 2716	2244	2024-05-22_ec34b2584f4677f191ed9d8a26c37f03_cryptolocker.exe	misid.exe
PID 2244 wrote to memory of 2716	2244	2024-05-22_ec34b2584f4677f191ed9d8a26c37f03_cryptolocker.exe	misid.exe
PID 2244 wrote to memory of 2716	2244	2024-05-22_ec34b2584f4677f191ed9d8a26c37f03_cryptolocker.exe	misid.exe
PID 2244 wrote to memory of 2716	2244	2024-05-22_ec34b2584f4677f191ed9d8a26c37f03_cryptolocker.exe	misid.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-22_ec34b2584f4677f191ed9d8a26c37f03_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-22_ec34b2584f4677f191ed9d8a26c37f03_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2244

C:\Users\Admin\AppData\Local\Temp\misid.exe
"C:\Users\Admin\AppData\Local\Temp\misid.exe"
2⤵
- Executes dropped EXE
PID:2716

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\misid.exe
Filesize
68KB

MD5
0b57a18745c348c7d4084482c404f772

SHA1
c276ea38f7a92f1c17218c41cb6654edff09ea5d

SHA256
8c16ceb867e5131c4adfb140cb628190080b6c9b9c742afa4eadf0d517ce6929

SHA512
b6492059758f4448874ff654764893be05f69c5436fa649352415d457ae7f8e38fdfd51fd7c76992224e55ee25497d9870abc6363d2bf8eb346406aaa00b842c

Download Submit
memory/2244-9-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2244-8-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2244-1-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/2244-0-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2716-15-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2716-17-0x0000000000210000-0x0000000000216000-memory.dmp

Filesize
24KB

Download
memory/2716-24-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download