b91e25cae10429256e1b25a2990db4401a93d7b7a25201b6a95385410793e29f

Analysis

max time kernel
150s
max time network
150s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
24/01/2024, 20:22

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-01-24_163e72755be7a9201537b6407fe05460_cryptolocker.exe
Size

61KB
MD5

163e72755be7a9201537b6407fe05460
SHA1

1a3998e792cebbd5467182d53686f5916b2f1fb1
SHA256

b91e25cae10429256e1b25a2990db4401a93d7b7a25201b6a95385410793e29f
SHA512

a855026dcd3a9d2637a66102f2c357ac1fdca64376cd062eeb4bc6c81804b719ec5a8e3b42a81811db8f13894661118279639aaaeb72a3b916a82950f15fcf6d
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszudnYTjipvF299S:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7K

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000c000000012327-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x000c000000012327-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2384	hurok.exe

Loads dropped DLL 1 IoCs

pid	Process
1992	2024-01-24_163e72755be7a9201537b6407fe05460_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
1992	2024-01-24_163e72755be7a9201537b6407fe05460_cryptolocker.exe
2384	hurok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1992 wrote to memory of 2384	1992	2024-01-24_163e72755be7a9201537b6407fe05460_cryptolocker.exe	28
PID 1992 wrote to memory of 2384	1992	2024-01-24_163e72755be7a9201537b6407fe05460_cryptolocker.exe	28
PID 1992 wrote to memory of 2384	1992	2024-01-24_163e72755be7a9201537b6407fe05460_cryptolocker.exe	28
PID 1992 wrote to memory of 2384	1992	2024-01-24_163e72755be7a9201537b6407fe05460_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-01-24_163e72755be7a9201537b6407fe05460_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-24_163e72755be7a9201537b6407fe05460_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:1992
- 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:2384

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

Loading Replay Monitor...

Downloads

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

Filesize
61KB

MD5
f6890c70dadd541aca06f394af0205d6

SHA1
f10a67c0c0320b81d8546d6761ad6f1f4be75ee3

SHA256
bd2ddb5fe45da9a636b2f71394728c6d5a9f8f878b1fd057d20a82072f563b89

SHA512
60a075d05ac8b4a07e3da18fb495135ac1882448d43111f669e33524545d87ab22a28495fa230ddd7960d308ab459e2fd5a4d7d86d5f3e4c7e1290944cd31f20

Download Submit
memory/1992-0-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download
memory/1992-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/1992-7-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download
memory/2384-16-0x00000000001C0000-0x00000000001C6000-memory.dmp

Filesize
24KB

Download