977bc2c736444acee073af769ae294c7f0c89beedc7faee7e1b34ba5dd1314dc

Analysis

max time kernel
148s
max time network
152s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
23-05-2024 01:29

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General

Target

2024-05-23_c9be0a4b82f4d226b844317cb2fd3b5a_cryptolocker.exe
Size

47KB
MD5

c9be0a4b82f4d226b844317cb2fd3b5a
SHA1

98aafdef80e69014b8eba7371df31816ab8e33c4
SHA256

977bc2c736444acee073af769ae294c7f0c89beedc7faee7e1b34ba5dd1314dc
SHA512

b7f3acc7893793e226c459fd0db73fbddc53dd19b3dfc18e20b99f398eb02e9e5cded869058d8db63a9aa4d80d68c3dc10ee692a20dae201bed16b331baa15c7
SSDEEP

384:e/4wODQkzonAYsju5N/surDQtOOtEvwDpjqIGROqS/WccJVJwi2B5oCCM8CLW2Vw:79inqyNR/QtOOtEvwDpjBKccJVODvy3J

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1972-8-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_rule2
behavioral1/memory/1972-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/3040-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1972-8-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_set1
behavioral1/memory/1972-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/3040-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

3040 asih.exe
Loads dropped DLL 1 IoCs

Processes:

2024-05-23_c9be0a4b82f4d226b844317cb2fd3b5a_cryptolocker.exe

pid process

1972 2024-05-23_c9be0a4b82f4d226b844317cb2fd3b5a_cryptolocker.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
3040	asih.exe

pid	process
1972	2024-05-23_c9be0a4b82f4d226b844317cb2fd3b5a_cryptolocker.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

2024-05-23_c9be0a4b82f4d226b844317cb2fd3b5a_cryptolocker.exe

description	pid	process	target process
PID 1972 wrote to memory of 3040	1972	2024-05-23_c9be0a4b82f4d226b844317cb2fd3b5a_cryptolocker.exe	asih.exe
PID 1972 wrote to memory of 3040	1972	2024-05-23_c9be0a4b82f4d226b844317cb2fd3b5a_cryptolocker.exe	asih.exe
PID 1972 wrote to memory of 3040	1972	2024-05-23_c9be0a4b82f4d226b844317cb2fd3b5a_cryptolocker.exe	asih.exe
PID 1972 wrote to memory of 3040	1972	2024-05-23_c9be0a4b82f4d226b844317cb2fd3b5a_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-23_c9be0a4b82f4d226b844317cb2fd3b5a_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-23_c9be0a4b82f4d226b844317cb2fd3b5a_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1972

C:\Users\Admin\AppData\Local\Temp\asih.exe
"C:\Users\Admin\AppData\Local\Temp\asih.exe"
2⤵
- Executes dropped EXE
PID:3040

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
48KB

MD5
d6a839dad2ad0bccb06625e21d7ea909

SHA1
674410eccb183e1b5fc7b9a13e1e56731dc3318c

SHA256
e6853a2b92b2225f5e2a352c9e2f91fd95abd45c15befb5f59db364969e33ae1

SHA512
44e25a645c7dae82abf4c35336077b8698e191b4177c5f8f568865f41d817e2a8f1b27268a3a82055e9e77d7a8bf0bdd0edb11b418738f4590e85e30a3ee35fe

Download Submit
memory/1972-0-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/1972-9-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/1972-8-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1972-1-0x0000000000610000-0x0000000000616000-memory.dmp

Filesize
24KB

Download
memory/1972-16-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1972-14-0x0000000002840000-0x000000000284F000-memory.dmp

Filesize
60KB

Download
memory/3040-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3040-19-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/3040-26-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download