c17c7ba43557b380efafa61a4689db09da342187497e20b1c9540597c0aedc76

Analysis

max time kernel
150s
max time network
150s
platform
windows7_x64
resource
win7-20240419-en
resource tags

arch:x64arch:x86image:win7-20240419-enlocale:en-usos:windows7-x64system
submitted
23-05-2024 01:27

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General

Target

2024-05-23_85c18dc9159d669bb3c1443a83efd37b_cryptolocker.exe
Size

68KB
MD5

85c18dc9159d669bb3c1443a83efd37b
SHA1

e13495a7c5292df54a5d2dbd781ac7cfa1d58ff8
SHA256

c17c7ba43557b380efafa61a4689db09da342187497e20b1c9540597c0aedc76
SHA512

44cd658832af657b89c5d511d5bf57f7074ab9663a276cd4bbcc81a7156185e6fd94484792f66d24d17a931e205052e1ce39fae1190af346ef9690bdcc5ba074
SSDEEP

768:6Qz7yVEhs9+4OR7tOOtEvwDpjLHqPOYRmNxt5I52kGEpE0P/xFIb:6j+1NMOtEvwDpjr8ox8UDEpN/jy

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2844-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
\Users\Admin\AppData\Local\Temp\misid.exe	CryptoLocker_rule2
behavioral1/memory/2844-15-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2628-25-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2844-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
\Users\Admin\AppData\Local\Temp\misid.exe	CryptoLocker_set1
behavioral1/memory/2844-15-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2628-25-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 4 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2844-0-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
\Users\Admin\AppData\Local\Temp\misid.exe	INDICATOR_EXE_Packed_MPress
behavioral1/memory/2844-15-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral1/memory/2628-25-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress

Executes dropped EXE 1 IoCs

Processes:

misid.exe

pid process

2628 misid.exe
Loads dropped DLL 1 IoCs

Processes:

2024-05-23_85c18dc9159d669bb3c1443a83efd37b_cryptolocker.exe

pid process

2844 2024-05-23_85c18dc9159d669bb3c1443a83efd37b_cryptolocker.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2628	misid.exe

pid	process
2844	2024-05-23_85c18dc9159d669bb3c1443a83efd37b_cryptolocker.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

2024-05-23_85c18dc9159d669bb3c1443a83efd37b_cryptolocker.exe

description	pid	process	target process
PID 2844 wrote to memory of 2628	2844	2024-05-23_85c18dc9159d669bb3c1443a83efd37b_cryptolocker.exe	misid.exe
PID 2844 wrote to memory of 2628	2844	2024-05-23_85c18dc9159d669bb3c1443a83efd37b_cryptolocker.exe	misid.exe
PID 2844 wrote to memory of 2628	2844	2024-05-23_85c18dc9159d669bb3c1443a83efd37b_cryptolocker.exe	misid.exe
PID 2844 wrote to memory of 2628	2844	2024-05-23_85c18dc9159d669bb3c1443a83efd37b_cryptolocker.exe	misid.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-23_85c18dc9159d669bb3c1443a83efd37b_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-23_85c18dc9159d669bb3c1443a83efd37b_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2844

C:\Users\Admin\AppData\Local\Temp\misid.exe
"C:\Users\Admin\AppData\Local\Temp\misid.exe"
2⤵
- Executes dropped EXE
PID:2628

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\misid.exe

Filesize
68KB

MD5
1c441234679ade7cbdd7382d44412333

SHA1
61c7073bf25031061a106c80d72f5b9e26672ea8

SHA256
a7016f8da6e355680adbe1748812c81a90061345cbd7aca47f1802a08c63e640

SHA512
7d9dad255a994040218d4eb0df4cf7cf20fde3d6a3f36e9a48dd085685694d3d036562bf2a1727e07d3eebb8f554dc0235bc169eefdfc9d01deca1d6eb84e290

Download Submit
memory/2628-24-0x0000000000420000-0x0000000000426000-memory.dmp

Filesize
24KB

Download
memory/2628-17-0x0000000000460000-0x0000000000466000-memory.dmp

Filesize
24KB

Download
memory/2628-25-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2844-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2844-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2844-2-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/2844-9-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2844-15-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download