4411829191f4753d334807fee1e080163ba1fdc514a390af37628ed153656128

Analysis

max time kernel
144s
max time network
151s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
12/03/2024, 04:40

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General

Target

2024-03-12_3b48e9a3ac12a82fee3e7c8eb0a51daa_cryptolocker.exe
Size

50KB
MD5

3b48e9a3ac12a82fee3e7c8eb0a51daa
SHA1

7d50c3568986177fcde81fe9ac4ef0878f4b4f0b
SHA256

4411829191f4753d334807fee1e080163ba1fdc514a390af37628ed153656128
SHA512

d477c82ce0b55f85a3f560279d57412888770ddbd014eb8f16f31cff1f8678afba56df7a2268965fe96ccbe9c62b40b5b1049ea4fc1da9bf034a67547849724a
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszsbKY1xzpAIb:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7o

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000b00000001313f-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x000b00000001313f-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2224	hurok.exe

Loads dropped DLL 1 IoCs

pid	Process
2696	2024-03-12_3b48e9a3ac12a82fee3e7c8eb0a51daa_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
2696	2024-03-12_3b48e9a3ac12a82fee3e7c8eb0a51daa_cryptolocker.exe
2224	hurok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2696 wrote to memory of 2224	2696	2024-03-12_3b48e9a3ac12a82fee3e7c8eb0a51daa_cryptolocker.exe	28
PID 2696 wrote to memory of 2224	2696	2024-03-12_3b48e9a3ac12a82fee3e7c8eb0a51daa_cryptolocker.exe	28
PID 2696 wrote to memory of 2224	2696	2024-03-12_3b48e9a3ac12a82fee3e7c8eb0a51daa_cryptolocker.exe	28
PID 2696 wrote to memory of 2224	2696	2024-03-12_3b48e9a3ac12a82fee3e7c8eb0a51daa_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-03-12_3b48e9a3ac12a82fee3e7c8eb0a51daa_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-12_3b48e9a3ac12a82fee3e7c8eb0a51daa_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2696
- 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:2224

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
50KB

MD5
75afa1e1b511fa4a25f3df242f48364b

SHA1
5efa9e7de8eeda8799ec58237e92711cef3e76b6

SHA256
a5b591ca22e6eba3fdfd4fc2bddf8d87606e1ced57f35987f769cc154918b848

SHA512
46781bf1f1d3d9bfc76c81e379555952b2ef41843afc15c5ebfa374f789d2f6942a97402656bfaba07c1ad0b482c46d016c2bd70bed1dc4eedf5a3067a5225cc

Download Submit
memory/2224-16-0x0000000000320000-0x0000000000326000-memory.dmp

Filesize
24KB

Download
memory/2696-0-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download
memory/2696-2-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download
memory/2696-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download