5bf28eb4450a8dd3f859296d5aeca2645380baa76420cf1b653f71f69d611df5

Analysis

max time kernel
150s
max time network
154s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
28/02/2024, 04:59

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General

Target

2024-02-28_68d6f7bb55a5fb0e3243998c71f248e8_cryptolocker.exe
Size

63KB
MD5

68d6f7bb55a5fb0e3243998c71f248e8
SHA1

7948a764156e98bb3fdeec277aa940fe4089e64b
SHA256

5bf28eb4450a8dd3f859296d5aeca2645380baa76420cf1b653f71f69d611df5
SHA512

d359772e4669caf9eda108a298b9e7ae1eb8b761477bed47e04a580effc8121cb460665f0855c3e3b5874ed24c308344f1c05372789ec7fa6e5b54a89949e3a9
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszsbKY1x/9lfL+gniDScG/:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7m

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x0008000000012262-13.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x0008000000012262-13.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2864	hurok.exe

Loads dropped DLL 1 IoCs

pid	Process
2244	2024-02-28_68d6f7bb55a5fb0e3243998c71f248e8_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
2244	2024-02-28_68d6f7bb55a5fb0e3243998c71f248e8_cryptolocker.exe
2864	hurok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2244 wrote to memory of 2864	2244	2024-02-28_68d6f7bb55a5fb0e3243998c71f248e8_cryptolocker.exe	22
PID 2244 wrote to memory of 2864	2244	2024-02-28_68d6f7bb55a5fb0e3243998c71f248e8_cryptolocker.exe	22
PID 2244 wrote to memory of 2864	2244	2024-02-28_68d6f7bb55a5fb0e3243998c71f248e8_cryptolocker.exe	22
PID 2244 wrote to memory of 2864	2244	2024-02-28_68d6f7bb55a5fb0e3243998c71f248e8_cryptolocker.exe	22

C:\Users\Admin\AppData\Local\Temp\2024-02-28_68d6f7bb55a5fb0e3243998c71f248e8_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-28_68d6f7bb55a5fb0e3243998c71f248e8_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2244
- 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:2864

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

C:\Users\Admin\AppData\Local\Temp\hurok.exe

Filesize
63KB

MD5
f984d345a2228a37485259112dfe17d7

SHA1
390d5869c9aae8598f8c2919bcb46faaa1fdd17d

SHA256
aef8ad8c06c8577ee5a86549d628bcc8e23637839bbaf7152f65ada42a061d61

SHA512
ac2cd30298ecb409515409ab73f091e9d1c7b70a0fec7fed529165dd29dfaf6adde601a8b158ec3c7196f6b5fad27a27f39c91d9f1f9e168e642ecd1e88043ad

Download Submit
memory/2244-2-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download
memory/2244-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2244-0-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download
memory/2864-18-0x00000000001C0000-0x00000000001C6000-memory.dmp

Filesize
24KB

Download