dcb4b2788acda77aa54d204477fd0214c1cc2ef6c8af70834bea6cbd0cbc4f72

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
18/02/2024, 18:31

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General

Target

2024-02-18_3ec71fa9edb30a5e9d737e364da24826_cryptolocker.exe
Size

44KB
MD5

3ec71fa9edb30a5e9d737e364da24826
SHA1

48d5838b338d5c445b654980b74fa9ddd860fa3a
SHA256

dcb4b2788acda77aa54d204477fd0214c1cc2ef6c8af70834bea6cbd0cbc4f72
SHA512

76c67b8c091f5773300d5b832c43408978b5c6a1cf3c62444d4fcea348454e3068a59a247f61201b3d76616b7517addd54a36c29f3554bfcf8495cb141b350a5
SSDEEP

768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGpebVIYLHA3KxP:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XC

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x00090000000122bf-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x00090000000122bf-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2724	hurok.exe

Loads dropped DLL 1 IoCs

pid	Process
2268	2024-02-18_3ec71fa9edb30a5e9d737e364da24826_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
2268	2024-02-18_3ec71fa9edb30a5e9d737e364da24826_cryptolocker.exe
2724	hurok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2268 wrote to memory of 2724	2268	2024-02-18_3ec71fa9edb30a5e9d737e364da24826_cryptolocker.exe	28
PID 2268 wrote to memory of 2724	2268	2024-02-18_3ec71fa9edb30a5e9d737e364da24826_cryptolocker.exe	28
PID 2268 wrote to memory of 2724	2268	2024-02-18_3ec71fa9edb30a5e9d737e364da24826_cryptolocker.exe	28
PID 2268 wrote to memory of 2724	2268	2024-02-18_3ec71fa9edb30a5e9d737e364da24826_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-18_3ec71fa9edb30a5e9d737e364da24826_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-18_3ec71fa9edb30a5e9d737e364da24826_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2268
- 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:2724

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
44KB

MD5
82e6125ef3794674a8b94412971f6407

SHA1
ecb223647e841fb17e0f1a1263fa3766527f582a

SHA256
a64cbc74acd0bab8180383ee809b6f0c7e13d395b17f8d93822c2b3a220adfc0

SHA512
55971e34c30e0eae392e5a5fdbe403ac571073165368c1060e721d7e06921e3df7aa3524733af08a771935a7181c079b23756086e5191acbc38b4a9276190f8d

Download Submit
memory/2268-0-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download
memory/2268-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2268-8-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download
memory/2724-17-0x0000000000390000-0x0000000000396000-memory.dmp

Filesize
24KB

Download