c6571313fc037f55934d90568bdea1594c54031773a1b5e315cabd54b4b7988b

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
15/04/2024, 06:17

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General

Target

2024-04-15_9fd43833539715112d53672d2faaf0e3_cryptolocker.exe
Size

52KB
MD5

9fd43833539715112d53672d2faaf0e3
SHA1

304e26eecad0877dcfe25a36bb58869d7a2b24ad
SHA256

c6571313fc037f55934d90568bdea1594c54031773a1b5e315cabd54b4b7988b
SHA512

0b419e405b1a0119ba40d016ba90bed66fb45755b852222316219fbe462e98733dfe866086ef77be695e62345481eafbf852327082fd98b456a07871c6c296b6
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszsbKY1xzpAIX6EB:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7A

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000b000000012256-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x000b000000012256-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2556	hurok.exe

Loads dropped DLL 1 IoCs

pid	Process
2168	2024-04-15_9fd43833539715112d53672d2faaf0e3_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
2168	2024-04-15_9fd43833539715112d53672d2faaf0e3_cryptolocker.exe
2556	hurok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2168 wrote to memory of 2556	2168	2024-04-15_9fd43833539715112d53672d2faaf0e3_cryptolocker.exe	28
PID 2168 wrote to memory of 2556	2168	2024-04-15_9fd43833539715112d53672d2faaf0e3_cryptolocker.exe	28
PID 2168 wrote to memory of 2556	2168	2024-04-15_9fd43833539715112d53672d2faaf0e3_cryptolocker.exe	28
PID 2168 wrote to memory of 2556	2168	2024-04-15_9fd43833539715112d53672d2faaf0e3_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-15_9fd43833539715112d53672d2faaf0e3_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-15_9fd43833539715112d53672d2faaf0e3_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2168
- 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:2556

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
52KB

MD5
bde23b4354cea13b77109faeb7674fbb

SHA1
b7a0fdfd24a1d1d5833bb09cce9b47b2f63a8d05

SHA256
e72736a81da5804eb03a07a068ca7ccce54f1c783e542cd961ac4fe92d983b86

SHA512
65bc4a786c177824a5fdf7faa56678f33f04d392a3e0f634c5a5c80a7ba573d564d1fbe930ffde772c2fb751489027e79cf04902c794172c97c2b6b17ed90124

Download Submit
memory/2168-0-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download
memory/2168-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2168-8-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download