51a27ae7329b45a45d56d065900268013e6e4184248cf4807e1d39b124ca8bd7

Analysis

max time kernel
150s
max time network
154s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
21-05-2024 15:41

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General

Target

2024-05-21_140851eb8b489a98b18f2bb88a99d6fd_cryptolocker.exe
Size

42KB
MD5

140851eb8b489a98b18f2bb88a99d6fd
SHA1

9cfa8df3b0bd73f3e9f3d902c0e6916f2625cdd4
SHA256

51a27ae7329b45a45d56d065900268013e6e4184248cf4807e1d39b124ca8bd7
SHA512

8a59ce460a181f00330dd98813665f0a2aecc52ca1e98c2f1cec6cb34798516bc70860cc918583902dd38eb293b1fcef74317bd119b6720707bdc9694ec7694a
SSDEEP

768:TS5nQJ24LR7tOOtEvwDpjGqPhqlcnvgpnY1n9R:m5nkFNMOtEvwDpjG8hgpY19R

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1284-1-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
\Users\Admin\AppData\Local\Temp\misid.exe	CryptoLocker_rule2
behavioral1/memory/2552-17-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2552-27-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 2 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1284-1-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2552-27-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 4 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1284-1-0x0000000000500000-0x000000000050E000-memory.dmp	INDICATOR_EXE_Packed_MPress
\Users\Admin\AppData\Local\Temp\misid.exe	INDICATOR_EXE_Packed_MPress
behavioral1/memory/2552-17-0x0000000000500000-0x000000000050E000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral1/memory/2552-27-0x0000000000500000-0x000000000050E000-memory.dmp	INDICATOR_EXE_Packed_MPress

Executes dropped EXE 1 IoCs

Processes:

misid.exe

pid process

2552 misid.exe
Loads dropped DLL 1 IoCs

Processes:

2024-05-21_140851eb8b489a98b18f2bb88a99d6fd_cryptolocker.exe

pid process

1284 2024-05-21_140851eb8b489a98b18f2bb88a99d6fd_cryptolocker.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2552	misid.exe

pid	process
1284	2024-05-21_140851eb8b489a98b18f2bb88a99d6fd_cryptolocker.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

2024-05-21_140851eb8b489a98b18f2bb88a99d6fd_cryptolocker.exe

description	pid	process	target process
PID 1284 wrote to memory of 2552	1284	2024-05-21_140851eb8b489a98b18f2bb88a99d6fd_cryptolocker.exe	misid.exe
PID 1284 wrote to memory of 2552	1284	2024-05-21_140851eb8b489a98b18f2bb88a99d6fd_cryptolocker.exe	misid.exe
PID 1284 wrote to memory of 2552	1284	2024-05-21_140851eb8b489a98b18f2bb88a99d6fd_cryptolocker.exe	misid.exe
PID 1284 wrote to memory of 2552	1284	2024-05-21_140851eb8b489a98b18f2bb88a99d6fd_cryptolocker.exe	misid.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-21_140851eb8b489a98b18f2bb88a99d6fd_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-21_140851eb8b489a98b18f2bb88a99d6fd_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1284

C:\Users\Admin\AppData\Local\Temp\misid.exe
"C:\Users\Admin\AppData\Local\Temp\misid.exe"
2⤵
- Executes dropped EXE
PID:2552

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
42KB

MD5
11497a1481033681e3a94ebb39ab5b9b

SHA1
bcd31188ec1e7d6010f2b2ec55be12b3df52a66d

SHA256
a34fbe60eeb8b2f893a67b128118570ff69fdeb9e039174f0696c0e7e4318d43

SHA512
0858e3e077e8b2575da8c8ecddc82de8ead82ada3b15f38ba8d4c67163e27c734f0d72242e1e5fe48103e8b109c820c5c7e44762ecd68c0f2d1118c96f418613

Download Submit
memory/1284-0-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1284-1-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/1284-8-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1284-2-0x0000000000370000-0x0000000000376000-memory.dmp

Filesize
24KB

Download
memory/1284-15-0x0000000000640000-0x000000000064E000-memory.dmp

Filesize
56KB

Download
memory/2552-17-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/2552-26-0x0000000000250000-0x0000000000256000-memory.dmp

Filesize
24KB

Download
memory/2552-19-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/2552-27-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download