ff1ca923a93159c532f748c0bb12d2398c359b40548808d076b1df418d1bd3b8

Analysis

max time kernel
150s
max time network
155s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
21/02/2024, 17:37

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General

Target

2024-02-21_60070d1a5c133d9ea44acb1a00e11f7d_cryptolocker.exe
Size

35KB
MD5

60070d1a5c133d9ea44acb1a00e11f7d
SHA1

90a8bea97332c50e85a818d288863b23a614ec20
SHA256

ff1ca923a93159c532f748c0bb12d2398c359b40548808d076b1df418d1bd3b8
SHA512

cd9d27850ae9fdb98536db578535115b8abd9efd910128b20198f89c66dbb36975893edc28399de392f06c8a8a6034718bd7c2b89ede282f889c9d12bfe6427b
SSDEEP

768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGp/YIm7wm0I:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XW

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000d00000001224c-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x000d00000001224c-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
3064	hurok.exe

Loads dropped DLL 1 IoCs

pid	Process
2764	2024-02-21_60070d1a5c133d9ea44acb1a00e11f7d_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

pid	Process
2764	2024-02-21_60070d1a5c133d9ea44acb1a00e11f7d_cryptolocker.exe
3064	hurok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2764 wrote to memory of 3064	2764	2024-02-21_60070d1a5c133d9ea44acb1a00e11f7d_cryptolocker.exe	28
PID 2764 wrote to memory of 3064	2764	2024-02-21_60070d1a5c133d9ea44acb1a00e11f7d_cryptolocker.exe	28
PID 2764 wrote to memory of 3064	2764	2024-02-21_60070d1a5c133d9ea44acb1a00e11f7d_cryptolocker.exe	28
PID 2764 wrote to memory of 3064	2764	2024-02-21_60070d1a5c133d9ea44acb1a00e11f7d_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-21_60070d1a5c133d9ea44acb1a00e11f7d_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-21_60070d1a5c133d9ea44acb1a00e11f7d_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2764
- 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:3064

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
35KB

MD5
f34f83f1abe0df7a5643a8e8e578cea7

SHA1
f810cb398afb6d208fdcbde8f872014d7315ab66

SHA256
85c1b8581bf4365ed8fc30cd55ac61f431321cd00c7103b11cbc83ae0b97c439

SHA512
d8ca2463b9ced93596b9e665cdadecf7feb16e1ec15a1c14b1e1f2ef34670502c7346ea940a92fe03474524c84d548a01e051731c37e23c68920203c1b1caf1d

Download Submit
memory/2764-0-0x0000000000340000-0x0000000000346000-memory.dmp

Filesize
24KB

Download
memory/2764-2-0x0000000000340000-0x0000000000346000-memory.dmp

Filesize
24KB

Download
memory/2764-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/3064-16-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download