dec252c6180e05840996b8d616cb81f0c8171c581cc9a55c9676915ea42ba328

Analysis

max time kernel
150s
max time network
150s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
21-05-2024 19:29

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General

Target

2024-05-21_516ee3cd4f91242c708adb09c46f24c5_cryptolocker.exe
Size

64KB
MD5

516ee3cd4f91242c708adb09c46f24c5
SHA1

efcb528d28edfa52c42209932071389ff560ba7b
SHA256

dec252c6180e05840996b8d616cb81f0c8171c581cc9a55c9676915ea42ba328
SHA512

1875bbf160c4601f61d9cf68c28644196c3c2d2b0f1a9336d95cf2821dfd07ee8e6be2aae3e881cbec9ceb618a5527b3c6c63a8861f42bf6be64cdbe84c2232d
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszudnYTjipvF293WS:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7x

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

Processes:

resource	yara_rule
\Users\Admin\AppData\Local\Temp\hurok.exe	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

Processes:

resource	yara_rule
\Users\Admin\AppData\Local\Temp\hurok.exe	CryptoLocker_set1

Executes dropped EXE 1 IoCs

Processes:

hurok.exe

pid process

2812 hurok.exe
Loads dropped DLL 1 IoCs

Processes:

2024-05-21_516ee3cd4f91242c708adb09c46f24c5_cryptolocker.exe

pid process

1088 2024-05-21_516ee3cd4f91242c708adb09c46f24c5_cryptolocker.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Suspicious use of UnmapMainImage 2 IoCs

Processes:

2024-05-21_516ee3cd4f91242c708adb09c46f24c5_cryptolocker.exehurok.exe

pid process

1088 2024-05-21_516ee3cd4f91242c708adb09c46f24c5_cryptolocker.exe
2812 hurok.exe

pid	process
2812	hurok.exe

pid	process
1088	2024-05-21_516ee3cd4f91242c708adb09c46f24c5_cryptolocker.exe

pid	process
1088	2024-05-21_516ee3cd4f91242c708adb09c46f24c5_cryptolocker.exe
2812	hurok.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

2024-05-21_516ee3cd4f91242c708adb09c46f24c5_cryptolocker.exe

description	pid	process	target process
PID 1088 wrote to memory of 2812	1088	2024-05-21_516ee3cd4f91242c708adb09c46f24c5_cryptolocker.exe	hurok.exe
PID 1088 wrote to memory of 2812	1088	2024-05-21_516ee3cd4f91242c708adb09c46f24c5_cryptolocker.exe	hurok.exe
PID 1088 wrote to memory of 2812	1088	2024-05-21_516ee3cd4f91242c708adb09c46f24c5_cryptolocker.exe	hurok.exe
PID 1088 wrote to memory of 2812	1088	2024-05-21_516ee3cd4f91242c708adb09c46f24c5_cryptolocker.exe	hurok.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-21_516ee3cd4f91242c708adb09c46f24c5_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-21_516ee3cd4f91242c708adb09c46f24c5_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:1088

C:\Users\Admin\AppData\Local\Temp\hurok.exe
"C:\Users\Admin\AppData\Local\Temp\hurok.exe"
2⤵
- Executes dropped EXE
- Suspicious use of UnmapMainImage
PID:2812

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\hurok.exe

Filesize
64KB

MD5
559d7420625fa8e8f69b637bf38ec646

SHA1
4d49c507648b75fa794c20a15022e89b354433a8

SHA256
c2c048f4e9f6dcfc882502455bf85c9f22d8cf9c7a0cfe13b3068005796b3971

SHA512
167ad58584e75a05a65b3dc5fb8ca9848fd8e62aa37954e4f2a5b81a6ec9c74a0df1e999bced39ff0f59b3ef73e96f74776ec3ca3f6d6f02ab950efd0a47aedc

Download Submit
memory/1088-0-0x00000000003C0000-0x00000000003C6000-memory.dmp

Filesize
24KB

Download
memory/1088-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/1088-8-0x00000000003C0000-0x00000000003C6000-memory.dmp

Filesize
24KB

Download
memory/2812-23-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download