8d403435abbc747329ae5752692c7dae88039231837fe7123ac9906575e42665

Analysis

max time kernel
150s
max time network
156s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
22-05-2024 23:26

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General

Target

2024-05-22_b85007601a05da43593dd719d9461e5c_cryptolocker.exe
Size

42KB
MD5

b85007601a05da43593dd719d9461e5c
SHA1

7dbdc686a321b696162f331f08b6dfd6526d7c1b
SHA256

8d403435abbc747329ae5752692c7dae88039231837fe7123ac9906575e42665
SHA512

410b8888239bab3ce9808cf039ebf62127f042fb466b3249da2a7c8f15a09c6de1e83648c8350f3d60efd0ea0b776c7d82a5fba55a9c4f4430baf7c03b1661fc
SSDEEP

768:XS5nQJ24LR1bytOOtEvwDpj66BLbjG9Rva/yYshNhZ:i5nkFGMOtEvwDpjR+viHshNP

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2612-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
\Users\Admin\AppData\Local\Temp\misid.exe	CryptoLocker_rule2
behavioral1/memory/2612-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1256-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1256-27-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 2 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2612-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1256-27-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2612-0-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
\Users\Admin\AppData\Local\Temp\misid.exe	INDICATOR_EXE_Packed_MPress
behavioral1/memory/2612-16-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral1/memory/1256-17-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral1/memory/1256-27-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress

Executes dropped EXE 1 IoCs

Processes:

misid.exe

pid process

1256 misid.exe
Loads dropped DLL 1 IoCs

Processes:

2024-05-22_b85007601a05da43593dd719d9461e5c_cryptolocker.exe

pid process

2612 2024-05-22_b85007601a05da43593dd719d9461e5c_cryptolocker.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
1256	misid.exe

pid	process
2612	2024-05-22_b85007601a05da43593dd719d9461e5c_cryptolocker.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

2024-05-22_b85007601a05da43593dd719d9461e5c_cryptolocker.exe

description	pid	process	target process
PID 2612 wrote to memory of 1256	2612	2024-05-22_b85007601a05da43593dd719d9461e5c_cryptolocker.exe	misid.exe
PID 2612 wrote to memory of 1256	2612	2024-05-22_b85007601a05da43593dd719d9461e5c_cryptolocker.exe	misid.exe
PID 2612 wrote to memory of 1256	2612	2024-05-22_b85007601a05da43593dd719d9461e5c_cryptolocker.exe	misid.exe
PID 2612 wrote to memory of 1256	2612	2024-05-22_b85007601a05da43593dd719d9461e5c_cryptolocker.exe	misid.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-22_b85007601a05da43593dd719d9461e5c_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-22_b85007601a05da43593dd719d9461e5c_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2612

C:\Users\Admin\AppData\Local\Temp\misid.exe
"C:\Users\Admin\AppData\Local\Temp\misid.exe"
2⤵
- Executes dropped EXE
PID:1256

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

\Users\Admin\AppData\Local\Temp\misid.exe
Filesize
42KB

MD5
197a594e67005514b9919eb8f95862f7

SHA1
379c63a95db9a0397ab19b7ed8fba649614b5ee3

SHA256
55e14a9503375b6e820328dc56509b087773fac18d3a08e39255eb080e2e1296

SHA512
05a4088ab701af5adf128713ec6445fc7b9f6c0da904a65a37fe7a949cf8fb7e4e352fb401e3a7cd476ab9515b55bf4cea7af5b4b6eb9bca66fe16411be9d86f

Download Submit
memory/1256-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1256-19-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1256-20-0x00000000004B0000-0x00000000004B6000-memory.dmp

Filesize
24KB

Download
memory/1256-27-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2612-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2612-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/2612-1-0x0000000000250000-0x0000000000256000-memory.dmp

Filesize
24KB

Download
memory/2612-9-0x0000000000250000-0x0000000000256000-memory.dmp

Filesize
24KB

Download
memory/2612-16-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download