5bf0ca7f4adc92329c756c3a45ea959676eef4e759bb98668dd4f76c0089eb81

Analysis

max time kernel
150s
max time network
153s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
07-03-2024 00:46

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General

Target

2024-03-07_a3f57a3ef68e0f832f43a9dbece0d48f_cryptolocker.exe
Size

49KB
MD5

a3f57a3ef68e0f832f43a9dbece0d48f
SHA1

5efca3be12ebf31e6ffc7a408442bc91f2d7b4a9
SHA256

5bf0ca7f4adc92329c756c3a45ea959676eef4e759bb98668dd4f76c0089eb81
SHA512

198eb22414c99184c111c529cb6942c072c6e1442cc616b08878b5f24aa423af9ab6d8719495119493ac8fd30a187219cdc1ca907d144841f5331172bc2e6cdf
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszsbKY1xzpAIBe:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7f

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000900000001223d-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x000900000001223d-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2820	hurok.exe

Loads dropped DLL 1 IoCs

pid	Process
1412	2024-03-07_a3f57a3ef68e0f832f43a9dbece0d48f_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
1412	2024-03-07_a3f57a3ef68e0f832f43a9dbece0d48f_cryptolocker.exe
2820	hurok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1412 wrote to memory of 2820	1412	2024-03-07_a3f57a3ef68e0f832f43a9dbece0d48f_cryptolocker.exe	28
PID 1412 wrote to memory of 2820	1412	2024-03-07_a3f57a3ef68e0f832f43a9dbece0d48f_cryptolocker.exe	28
PID 1412 wrote to memory of 2820	1412	2024-03-07_a3f57a3ef68e0f832f43a9dbece0d48f_cryptolocker.exe	28
PID 1412 wrote to memory of 2820	1412	2024-03-07_a3f57a3ef68e0f832f43a9dbece0d48f_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-03-07_a3f57a3ef68e0f832f43a9dbece0d48f_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-07_a3f57a3ef68e0f832f43a9dbece0d48f_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:1412
- 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:2820

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
17fb83de59cc0c22b63f6cd355992e71

SHA1
2d04abe40bfaa1a8caddcac15c23e5e12edb9191

SHA256
a31bfed5f6888a8793d55a7d7362b74e77eb21b220a09e0bd0612cc5ba2c9874

SHA512
f24655e3b4b10b4fb630d4cb2abd1a07fd2d2e14db88925c9e9b21d167ee16f87f9631c8d3aa1488cf8c9beb91bc24cfc41f9d498f4274e25cba1ddf7a99f3a3

Download Submit
memory/1412-0-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download
memory/1412-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/1412-3-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download
memory/2820-17-0x0000000000310000-0x0000000000316000-memory.dmp

Filesize
24KB

Download