ced836e39f0584c0b794a83a94e5fd4e9ad391725bd42926e07e1172d1d1bc6b

Analysis

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

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
23-05-2024 02:24

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General

Target

2024-05-23_1de9fc77cf17d5f48e581e60f85c6ce8_cryptolocker.exe
Size

42KB
MD5

1de9fc77cf17d5f48e581e60f85c6ce8
SHA1

a705a3ac88f85ced7c6d9dc7a6a765a159a31071
SHA256

ced836e39f0584c0b794a83a94e5fd4e9ad391725bd42926e07e1172d1d1bc6b
SHA512

b902cc967b4cbcfaf5f21804154fb5a4c2ec6c05db6666f0bf79ec05b6ee9ed35456a04adb186b7193a8d4ebd11abf17460cb35f711397b82a30b4151b349b69
SSDEEP

768:XS5nQJ24LR1bytOOtEvwDpj66BLbjG9Rva/yYshNhK:i5nkFGMOtEvwDpjR+viHshN4

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1836-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
\Users\Admin\AppData\Local\Temp\misid.exe	CryptoLocker_rule2
behavioral1/memory/1836-12-0x0000000000630000-0x000000000063F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1836-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1884-18-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1884-28-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1836-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1884-18-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1884-28-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1836-0-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
\Users\Admin\AppData\Local\Temp\misid.exe	INDICATOR_EXE_Packed_MPress
behavioral1/memory/1836-12-0x0000000000630000-0x000000000063F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral1/memory/1836-17-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral1/memory/1884-18-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral1/memory/1884-28-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress

Executes dropped EXE 1 IoCs

Processes:

misid.exe

pid process

1884 misid.exe
Loads dropped DLL 1 IoCs

Processes:

2024-05-23_1de9fc77cf17d5f48e581e60f85c6ce8_cryptolocker.exe

pid process

1836 2024-05-23_1de9fc77cf17d5f48e581e60f85c6ce8_cryptolocker.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
1884	misid.exe

pid	process
1836	2024-05-23_1de9fc77cf17d5f48e581e60f85c6ce8_cryptolocker.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

2024-05-23_1de9fc77cf17d5f48e581e60f85c6ce8_cryptolocker.exe

description	pid	process	target process
PID 1836 wrote to memory of 1884	1836	2024-05-23_1de9fc77cf17d5f48e581e60f85c6ce8_cryptolocker.exe	misid.exe
PID 1836 wrote to memory of 1884	1836	2024-05-23_1de9fc77cf17d5f48e581e60f85c6ce8_cryptolocker.exe	misid.exe
PID 1836 wrote to memory of 1884	1836	2024-05-23_1de9fc77cf17d5f48e581e60f85c6ce8_cryptolocker.exe	misid.exe
PID 1836 wrote to memory of 1884	1836	2024-05-23_1de9fc77cf17d5f48e581e60f85c6ce8_cryptolocker.exe	misid.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-23_1de9fc77cf17d5f48e581e60f85c6ce8_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-23_1de9fc77cf17d5f48e581e60f85c6ce8_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1836

C:\Users\Admin\AppData\Local\Temp\misid.exe
"C:\Users\Admin\AppData\Local\Temp\misid.exe"
2⤵
- Executes dropped EXE
PID:1884

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

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Downloads

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

MD5
85a2c4c375dc506fd5fb3ebf1d5aaa5a

SHA1
ca8962a3dd7b9de48382a651c52af84b86055fbf

SHA256
881fed86f29ca204e7397611d81f4776d709edd3cc97ba57f424c20990af9f8b

SHA512
f023f69c1ed4c1d78e5ff1aca684e526086061dd0e6e9ae6d5eb7ac0096550b78b33606599109a4c8c78df6780a837d74604ba2211e9ce84b7a4fff635bf654f

Download Submit
memory/1836-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1836-1-0x00000000002D0000-0x00000000002D6000-memory.dmp

Filesize
24KB

Download
memory/1836-2-0x00000000002D0000-0x00000000002D6000-memory.dmp

Filesize
24KB

Download
memory/1836-3-0x0000000000470000-0x0000000000476000-memory.dmp

Filesize
24KB

Download
memory/1836-12-0x0000000000630000-0x000000000063F000-memory.dmp

Filesize
60KB

Download
memory/1836-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1884-18-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1884-27-0x0000000000420000-0x0000000000426000-memory.dmp

Filesize
24KB

Download
memory/1884-28-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download