b00db3349524c48501690cb819a95952f63899a89a1d1fdf69d103db58614a82

General

Target

2024-04-03_22d113d62ab696fef92633d4c323b0a2_cryptolocker.exe
Size

64KB
MD5

22d113d62ab696fef92633d4c323b0a2
SHA1

aa5584ee9416c40cc61b0605e55a18a83dbebaf1
SHA256

b00db3349524c48501690cb819a95952f63899a89a1d1fdf69d103db58614a82
SHA512

d03cf4c9cb0163f969a33b276faabe95dcf022ff6a80e8d18f2e160ba815595c7cc77f278523c736dc4ae5ec11c3126e32b26f178e26b47e35aec872746ace2a
SSDEEP

768:zQz7yVEhs9+syJP6ntOOtEvwDpjFelaB7yBEY9Su8F5mLZ5k5n:zj+soPSMOtEvwDpj4kpmeLmQ5n

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1632-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
\Users\Admin\AppData\Local\Temp\misid.exe	CryptoLocker_rule2
behavioral1/memory/1632-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1912-19-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1632-27-0x0000000001E60000-0x0000000001E70000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1632-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
\Users\Admin\AppData\Local\Temp\misid.exe	CryptoLocker_set1
behavioral1/memory/1632-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1912-19-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1632-27-0x0000000001E60000-0x0000000001E70000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1632-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
\Users\Admin\AppData\Local\Temp\misid.exe	UPX
behavioral1/memory/1632-15-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/1912-19-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

Processes:

misid.exe

pid process

1912 misid.exe
Loads dropped DLL 1 IoCs

Processes:

2024-04-03_22d113d62ab696fef92633d4c323b0a2_cryptolocker.exe

pid process

1632 2024-04-03_22d113d62ab696fef92633d4c323b0a2_cryptolocker.exe

pid	process
1912	misid.exe

pid	process
1632	2024-04-03_22d113d62ab696fef92633d4c323b0a2_cryptolocker.exe

UPX packed file 4 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/1632-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
\Users\Admin\AppData\Local\Temp\misid.exe	upx
behavioral1/memory/1632-15-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/1912-19-0x0000000000500000-0x0000000000510000-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:

2024-04-03_22d113d62ab696fef92633d4c323b0a2_cryptolocker.exe

description	pid	process	target process
PID 1632 wrote to memory of 1912	1632	2024-04-03_22d113d62ab696fef92633d4c323b0a2_cryptolocker.exe	misid.exe
PID 1632 wrote to memory of 1912	1632	2024-04-03_22d113d62ab696fef92633d4c323b0a2_cryptolocker.exe	misid.exe
PID 1632 wrote to memory of 1912	1632	2024-04-03_22d113d62ab696fef92633d4c323b0a2_cryptolocker.exe	misid.exe
PID 1632 wrote to memory of 1912	1632	2024-04-03_22d113d62ab696fef92633d4c323b0a2_cryptolocker.exe	misid.exe

C:\Users\Admin\AppData\Local\Temp\2024-04-03_22d113d62ab696fef92633d4c323b0a2_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-03_22d113d62ab696fef92633d4c323b0a2_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1632

C:\Users\Admin\AppData\Local\Temp\misid.exe
"C:\Users\Admin\AppData\Local\Temp\misid.exe"
2⤵
- Executes dropped EXE
PID:1912

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

Loading Replay Monitor...

Downloads

\Users\Admin\AppData\Local\Temp\misid.exe
Filesize
64KB

MD5
366bb7e6a4b30b169100a2fda0e1f4c7

SHA1
424c1c33515a842e0d80ddceea6f9745f78a4adc

SHA256
f01570a05862dfb4a1ba085a1d807a8c9934537146189078b8477f45dd558a7a

SHA512
89fee80d0056d370a91b5a05cfda78d5daae353bf6cfc29373c4a1f031426273dfa5a80432f0bcb2dc2097868e87a9baa01cc82647c461954b6b344cb70f8363

Download Submit
memory/1632-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1632-1-0x0000000000320000-0x0000000000326000-memory.dmp

Filesize
24KB

Download
memory/1632-2-0x0000000000320000-0x0000000000326000-memory.dmp

Filesize
24KB

Download
memory/1632-3-0x0000000000360000-0x0000000000366000-memory.dmp

Filesize
24KB

Download
memory/1632-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1632-16-0x0000000001E60000-0x0000000001E70000-memory.dmp

Filesize
64KB

Download
memory/1632-27-0x0000000001E60000-0x0000000001E70000-memory.dmp

Filesize
64KB

Download
memory/1912-19-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1912-20-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1912-18-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

Replay Monitor

Loading Replay Monitor...

Downloads