51f4065ce69dcf3b56551b5a2180e1d86b0926b8e299b64666c61f5a5ac1b262

Analysis

max time kernel
147s
max time network
148s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
22-05-2024 02:43

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General

Target

2024-05-22_9bd8b93d7d94ba82aff73e832391c2e9_cryptolocker.exe
Size

46KB
MD5

9bd8b93d7d94ba82aff73e832391c2e9
SHA1

e3d5e4367871b57c27379eca52b0dde60182481e
SHA256

51f4065ce69dcf3b56551b5a2180e1d86b0926b8e299b64666c61f5a5ac1b262
SHA512

e2b7ccf5ed45818476cf65447a7ebdd87325a3b414e344bb8e40339612260e5178d48f5b282a9739787226fbb29842e9771e31b7ddf7a22a37aeba4550792024
SSDEEP

768:P6LsoEEeegiZPvEhHS5+Mh/QtOOtEvwDpjBpaD3TUogs/VXpAPow:P6QFElP6k+MRQMOtEvwDpjBQpVXzw

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2976-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_rule2
behavioral1/memory/2976-13-0x0000000002BC0000-0x0000000002BCB000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2976-16-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2900-25-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2976-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_set1
behavioral1/memory/2976-13-0x0000000002BC0000-0x0000000002BCB000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2976-16-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2900-25-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

2900 asih.exe
Loads dropped DLL 1 IoCs

Processes:

2024-05-22_9bd8b93d7d94ba82aff73e832391c2e9_cryptolocker.exe

pid process

2976 2024-05-22_9bd8b93d7d94ba82aff73e832391c2e9_cryptolocker.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2900	asih.exe

pid	process
2976	2024-05-22_9bd8b93d7d94ba82aff73e832391c2e9_cryptolocker.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

2024-05-22_9bd8b93d7d94ba82aff73e832391c2e9_cryptolocker.exe

description	pid	process	target process
PID 2976 wrote to memory of 2900	2976	2024-05-22_9bd8b93d7d94ba82aff73e832391c2e9_cryptolocker.exe	asih.exe
PID 2976 wrote to memory of 2900	2976	2024-05-22_9bd8b93d7d94ba82aff73e832391c2e9_cryptolocker.exe	asih.exe
PID 2976 wrote to memory of 2900	2976	2024-05-22_9bd8b93d7d94ba82aff73e832391c2e9_cryptolocker.exe	asih.exe
PID 2976 wrote to memory of 2900	2976	2024-05-22_9bd8b93d7d94ba82aff73e832391c2e9_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-22_9bd8b93d7d94ba82aff73e832391c2e9_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-22_9bd8b93d7d94ba82aff73e832391c2e9_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2976

C:\Users\Admin\AppData\Local\Temp\asih.exe
"C:\Users\Admin\AppData\Local\Temp\asih.exe"
2⤵
- Executes dropped EXE
PID:2900

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
46KB

MD5
1db0bcab1aab15ca25ade2a6dbf4fa55

SHA1
6915c13a0fa7e89fc222404f12f6797c5d28cb21

SHA256
715a2d7e1240a94d20e91263ea42fdae0cfb7750d0ed20bd57fc4d1e79c68789

SHA512
9cd9c0c63e964a3e4011d0b0d5880691c61996af79cda681ecc2dda87fb316cc89cae89b76981ed81313e41a1c3d74fbeff5d27f0792b79a8ff1eb62b0c55136

Download Submit
memory/2900-18-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/2900-25-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2976-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2976-2-0x0000000000390000-0x0000000000396000-memory.dmp

Filesize
24KB

Download
memory/2976-9-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2976-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2976-13-0x0000000002BC0000-0x0000000002BCB000-memory.dmp

Filesize
44KB

Download
memory/2976-16-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download