eb780842f932c9bca73c93ea973a03819a1810b3f9d5622c1f89c5def168fa13

Analysis

max time kernel
148s
max time network
148s
platform
windows7_x64
resource
win7-20240220-en
resource tags

arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
submitted
27-04-2024 22:31

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General

Target

2024-04-27_56df5f047f1fee9a942219fd65a531cd_cryptolocker.exe
Size

62KB
MD5

56df5f047f1fee9a942219fd65a531cd
SHA1

80dcb354334acb5e411cddfae6cc2b532f1fe527
SHA256

eb780842f932c9bca73c93ea973a03819a1810b3f9d5622c1f89c5def168fa13
SHA512

492db5e9864d33153c0d5abe48d39c75637767b1bad3014100149b0601e2d7cd01b502af59e7ad30a4752651e3586e8f31b470cde93880ce1b6515484537b13d
SSDEEP

1536:qmbhXDmjr5MOtEvwDpj5cDtKkQZQRKb61vSbgtsi0:BbdDmjr+OtEvwDpjM89

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2360-1-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_rule2
behavioral1/memory/2360-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2104-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2104-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2360-1-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2360-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2104-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2360-1-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
\Users\Admin\AppData\Local\Temp\asih.exe	UPX
behavioral1/memory/2360-16-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2104-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2104-27-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

2104 asih.exe
Loads dropped DLL 1 IoCs

Processes:

2024-04-27_56df5f047f1fee9a942219fd65a531cd_cryptolocker.exe

pid process

2360 2024-04-27_56df5f047f1fee9a942219fd65a531cd_cryptolocker.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2104	asih.exe

pid	process
2360	2024-04-27_56df5f047f1fee9a942219fd65a531cd_cryptolocker.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

2024-04-27_56df5f047f1fee9a942219fd65a531cd_cryptolocker.exe

description	pid	process	target process
PID 2360 wrote to memory of 2104	2360	2024-04-27_56df5f047f1fee9a942219fd65a531cd_cryptolocker.exe	asih.exe
PID 2360 wrote to memory of 2104	2360	2024-04-27_56df5f047f1fee9a942219fd65a531cd_cryptolocker.exe	asih.exe
PID 2360 wrote to memory of 2104	2360	2024-04-27_56df5f047f1fee9a942219fd65a531cd_cryptolocker.exe	asih.exe
PID 2360 wrote to memory of 2104	2360	2024-04-27_56df5f047f1fee9a942219fd65a531cd_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-04-27_56df5f047f1fee9a942219fd65a531cd_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-27_56df5f047f1fee9a942219fd65a531cd_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2360

C:\Users\Admin\AppData\Local\Temp\asih.exe
"C:\Users\Admin\AppData\Local\Temp\asih.exe"
2⤵
- Executes dropped EXE
PID:2104

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
62KB

MD5
db217db08481a0266fc25a7e503c616f

SHA1
21b56a96e2c354f334249447ed728cbc7333a34d

SHA256
368c4b669e643c5fdffc900a5c053dab31fa70de55b042877d21461315431d1a

SHA512
f85dbf81a755a278ae82b89db4f6372242e2550dfe90e60d8b035ef1b46307cdff27dc6d4e41dee70a1865b72f1987d377d23ed0c3f3983cf50270083e903171

Download Submit
memory/2104-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2104-26-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2104-19-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/2104-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2360-0-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2360-1-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2360-2-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2360-3-0x0000000000380000-0x0000000000386000-memory.dmp

Filesize
24KB

Download
memory/2360-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download