eef3ceed4cdf50806c8b84d5793b63d913ba67d12e1c0c7c5bbb128e6dccf4d2

Analysis

max time kernel
150s
max time network
150s
platform
windows7_x64
resource
win7-20240215-en
resource tags

arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
submitted
01/06/2024, 19:31

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General

Target

2024-06-01_4053a4eff0224c2fa97e41807f3478be_cryptolocker.exe
Size

53KB
MD5

4053a4eff0224c2fa97e41807f3478be
SHA1

90e5771dd17c5aea92cec8e60bd3bae25bf84a08
SHA256

eef3ceed4cdf50806c8b84d5793b63d913ba67d12e1c0c7c5bbb128e6dccf4d2
SHA512

a61f7ac925739f91e1fab7bdfbee9f843992958239d130df030c7b6036c0656f84f9d5d15b315bec89005a316ee931953b5a4a274f8dac020cc0604b99e8cece
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszsbKY1xzpAI4kP:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7o

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000b0000000144e0-13.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x000b0000000144e0-13.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
3004	hurok.exe

Loads dropped DLL 1 IoCs

pid	Process
1660	2024-06-01_4053a4eff0224c2fa97e41807f3478be_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
1660	2024-06-01_4053a4eff0224c2fa97e41807f3478be_cryptolocker.exe
3004	hurok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1660 wrote to memory of 3004	1660	2024-06-01_4053a4eff0224c2fa97e41807f3478be_cryptolocker.exe	28
PID 1660 wrote to memory of 3004	1660	2024-06-01_4053a4eff0224c2fa97e41807f3478be_cryptolocker.exe	28
PID 1660 wrote to memory of 3004	1660	2024-06-01_4053a4eff0224c2fa97e41807f3478be_cryptolocker.exe	28
PID 1660 wrote to memory of 3004	1660	2024-06-01_4053a4eff0224c2fa97e41807f3478be_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-06-01_4053a4eff0224c2fa97e41807f3478be_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-01_4053a4eff0224c2fa97e41807f3478be_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:1660
- 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:3004

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

C:\Users\Admin\AppData\Local\Temp\hurok.exe

Filesize
53KB

MD5
df15cdb92ab95899479cfa11d303cc85

SHA1
2cfba5c8b4bef76ce0f9a18466443831fbc816ee

SHA256
55434215b10ff4bcdeb94e4b0884ad92a35b56bb81bd604b692a19959df95a7e

SHA512
fe34858f2bd7833956faac613b1a2c5a0767cddf758f3100ef7b6837d5dc309261afbb88370b39a1d89f2766cae3ff4dc805397a47662280a8f3cc6fafb3fabe

Download Submit
memory/1660-0-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download
memory/1660-8-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download
memory/1660-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/3004-23-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download