cd3fa6f968151f345361d2276dd2664458d4d8a9aace0cdbd31df0dee1006beb

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
26/04/2024, 19:42

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General

Target

2024-04-26_ee92db100930e20ab11921d51fe1f637_cryptolocker.exe
Size

43KB
MD5

ee92db100930e20ab11921d51fe1f637
SHA1

e034e72bf3f15205a3776db30f53330494477654
SHA256

cd3fa6f968151f345361d2276dd2664458d4d8a9aace0cdbd31df0dee1006beb
SHA512

3cc47bfae9f44224838d566ba2d8175b6cc2fa943deaf0390aca5b24b49c11d187716df64b296df23c52096ead66c7efef90d716363b04fbd6ae3f2f6569963e
SSDEEP

768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGpebVIYLHA3KxI:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XJ

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000c00000001432c-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x000c00000001432c-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2184	hurok.exe

Loads dropped DLL 1 IoCs

pid	Process
2336	2024-04-26_ee92db100930e20ab11921d51fe1f637_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
2336	2024-04-26_ee92db100930e20ab11921d51fe1f637_cryptolocker.exe
2184	hurok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2336 wrote to memory of 2184	2336	2024-04-26_ee92db100930e20ab11921d51fe1f637_cryptolocker.exe	28
PID 2336 wrote to memory of 2184	2336	2024-04-26_ee92db100930e20ab11921d51fe1f637_cryptolocker.exe	28
PID 2336 wrote to memory of 2184	2336	2024-04-26_ee92db100930e20ab11921d51fe1f637_cryptolocker.exe	28
PID 2336 wrote to memory of 2184	2336	2024-04-26_ee92db100930e20ab11921d51fe1f637_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-26_ee92db100930e20ab11921d51fe1f637_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-26_ee92db100930e20ab11921d51fe1f637_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2336
- 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:2184

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
57833f3cd90d750bcfea954c826cfc96

SHA1
12d8528caf6e600693a8c825f21868910b78a06a

SHA256
44f9e6e41983d1bcfa839fd7c619ca7366160f818b0af120d4bcdd226c5532d1

SHA512
b9c7b1293bf75e7949c104d2722e71ac6de4f81386ba852f382aa63ad0644f512f73736559865df1bea2cc7ba470b72c11d78c20dc9f1130c4a76716fd2bce6c

Download Submit
memory/2336-0-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download
memory/2336-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2336-1-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download