bd20da8af0741245711e98c1e00672bb6a0d0ea255e1d9bdaa4da7d379e50654

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
28/04/2024, 05:46

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General

Target

2024-04-28_cc8e591b4c49fc28da561d28b8f113d5_cryptolocker.exe
Size

52KB
MD5

cc8e591b4c49fc28da561d28b8f113d5
SHA1

0f83f67b4be385c4833c0b85f1c3446ad0c1dbf8
SHA256

bd20da8af0741245711e98c1e00672bb6a0d0ea255e1d9bdaa4da7d379e50654
SHA512

31e2a4919c1e28f75064ff67ec37e349dbd8e0a5f186e4a498c1061770e99693d8a814224a5992da4ca73a3a2a8c0f9c443eaaaa1c7f78a6c167b71a54985652
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszsbKY1xzpAIKxN:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7p

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000a000000015cbd-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x000a000000015cbd-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2368	hurok.exe

Loads dropped DLL 1 IoCs

pid	Process
1244	2024-04-28_cc8e591b4c49fc28da561d28b8f113d5_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
1244	2024-04-28_cc8e591b4c49fc28da561d28b8f113d5_cryptolocker.exe
2368	hurok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1244 wrote to memory of 2368	1244	2024-04-28_cc8e591b4c49fc28da561d28b8f113d5_cryptolocker.exe	28
PID 1244 wrote to memory of 2368	1244	2024-04-28_cc8e591b4c49fc28da561d28b8f113d5_cryptolocker.exe	28
PID 1244 wrote to memory of 2368	1244	2024-04-28_cc8e591b4c49fc28da561d28b8f113d5_cryptolocker.exe	28
PID 1244 wrote to memory of 2368	1244	2024-04-28_cc8e591b4c49fc28da561d28b8f113d5_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-28_cc8e591b4c49fc28da561d28b8f113d5_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-28_cc8e591b4c49fc28da561d28b8f113d5_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:1244
- 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:2368

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
53KB

MD5
0cfeb9507dcd969a789ef7337e450312

SHA1
f3bf563149395aaabbbc9569c229cb1776d222d9

SHA256
3993e0fdbe5721578822d335acc8dbafafde6e5da111ddf64e9db2eae843b00c

SHA512
f9877a6c3c62dc62d878eeaeeca3923d0a0845f9ca54eda7fdaa488c3e6fed65c487e3e8f1f62156c10f98234a26d5446de9d45e89561fc1b860cf5e57e6c6ef

Download Submit
memory/1244-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/1244-0-0x0000000000390000-0x0000000000396000-memory.dmp

Filesize
24KB

Download
memory/1244-8-0x0000000000390000-0x0000000000396000-memory.dmp

Filesize
24KB

Download
memory/2368-16-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download