116414352b0758044f7edc10bf625a6e979e2aedb7a15a246f0208cbb61dc1fe

Analysis

max time kernel
148s
max time network
149s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
22-05-2024 19:57

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General

Target

2024-05-22_8b70d8a1740fb95827fcd72eb0ab48d0_cryptolocker.exe
Size

40KB
MD5

8b70d8a1740fb95827fcd72eb0ab48d0
SHA1

fc8aec0dcc67b10ca742e7439d0e73426d3c0743
SHA256

116414352b0758044f7edc10bf625a6e979e2aedb7a15a246f0208cbb61dc1fe
SHA512

7dbfa113a9fc4f10ecef1e2e1d31894f64a1fd56d131464bcae384a52d61e599fbc22ecaf73cda16264f7eefe4925c25826ff7cf3ac3eaded7345e8360c764cc
SSDEEP

768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITYljZ:qDdFJy3QMOtEvwDpjjWMl7T69

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1796-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_rule2
behavioral1/memory/1796-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2004-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1796-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_set1
behavioral1/memory/1796-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2004-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1796-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
\Users\Admin\AppData\Local\Temp\asih.exe	UPX
behavioral1/memory/1796-16-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2004-26-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

2004 asih.exe
Loads dropped DLL 1 IoCs

Processes:

2024-05-22_8b70d8a1740fb95827fcd72eb0ab48d0_cryptolocker.exe

pid process

1796 2024-05-22_8b70d8a1740fb95827fcd72eb0ab48d0_cryptolocker.exe

pid	process
2004	asih.exe

pid	process
1796	2024-05-22_8b70d8a1740fb95827fcd72eb0ab48d0_cryptolocker.exe

UPX packed file 4 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/1796-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
\Users\Admin\AppData\Local\Temp\asih.exe	upx
behavioral1/memory/1796-16-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2004-26-0x0000000000500000-0x0000000000510000-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

Processes:

2024-05-22_8b70d8a1740fb95827fcd72eb0ab48d0_cryptolocker.exe

description	pid	process	target process
PID 1796 wrote to memory of 2004	1796	2024-05-22_8b70d8a1740fb95827fcd72eb0ab48d0_cryptolocker.exe	asih.exe
PID 1796 wrote to memory of 2004	1796	2024-05-22_8b70d8a1740fb95827fcd72eb0ab48d0_cryptolocker.exe	asih.exe
PID 1796 wrote to memory of 2004	1796	2024-05-22_8b70d8a1740fb95827fcd72eb0ab48d0_cryptolocker.exe	asih.exe
PID 1796 wrote to memory of 2004	1796	2024-05-22_8b70d8a1740fb95827fcd72eb0ab48d0_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-22_8b70d8a1740fb95827fcd72eb0ab48d0_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-22_8b70d8a1740fb95827fcd72eb0ab48d0_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1796

C:\Users\Admin\AppData\Local\Temp\asih.exe
"C:\Users\Admin\AppData\Local\Temp\asih.exe"
2⤵
- Executes dropped EXE
PID:2004

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
40KB

MD5
7867342933c886ee75ea1d8006a6c150

SHA1
21ca76b2d4b4916659090cec37329902a25c651d

SHA256
b3455cb43ea5d616f96a83094a2f64df54ea5ac7d098a69ad9f6ad66ce5869df

SHA512
97d41429c7613dec354678d10f916a3792890e1696cf588c822c5a98f84bc9f817fa9672d88e687e1aec78b451bb29c566998db9f2fb6e8f06bce69d78182b9b

Download Submit
memory/1796-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1796-1-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download
memory/1796-2-0x00000000002F0000-0x00000000002F6000-memory.dmp

Filesize
24KB

Download
memory/1796-9-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download
memory/1796-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2004-18-0x0000000000360000-0x0000000000366000-memory.dmp

Filesize
24KB

Download
memory/2004-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2004-25-0x0000000000320000-0x0000000000326000-memory.dmp

Filesize
24KB

Download