905e81ae2e029848503fa26f875be611b02b6295558e14d763c7505544211a75

Analysis

max time kernel
144s
max time network
148s
platform
windows7_x64
resource
win7-20240419-en
resource tags

arch:x64arch:x86image:win7-20240419-enlocale:en-usos:windows7-x64system
submitted
27/04/2024, 21:25

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General

Target

2024-04-27_423a8fa8f5152c56164e068c01545b7f_cryptolocker.exe
Size

51KB
MD5

423a8fa8f5152c56164e068c01545b7f
SHA1

9729ecb7bbf0a809bf0486b604652dced860a4d2
SHA256

905e81ae2e029848503fa26f875be611b02b6295558e14d763c7505544211a75
SHA512

c22143f0e1924b1451eb833ecdfdd95c2654294a43b61a34793894c95925ebc6f337f66ab06f11c6f0b871254f46ea8d708d089bf8672b75cd4509828a7c1cf7
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszsbKY1xzpAI49B:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7f

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000c00000001228a-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x000c00000001228a-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2556	hurok.exe

Loads dropped DLL 1 IoCs

pid	Process
3012	2024-04-27_423a8fa8f5152c56164e068c01545b7f_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
3012	2024-04-27_423a8fa8f5152c56164e068c01545b7f_cryptolocker.exe
2556	hurok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 3012 wrote to memory of 2556	3012	2024-04-27_423a8fa8f5152c56164e068c01545b7f_cryptolocker.exe	28
PID 3012 wrote to memory of 2556	3012	2024-04-27_423a8fa8f5152c56164e068c01545b7f_cryptolocker.exe	28
PID 3012 wrote to memory of 2556	3012	2024-04-27_423a8fa8f5152c56164e068c01545b7f_cryptolocker.exe	28
PID 3012 wrote to memory of 2556	3012	2024-04-27_423a8fa8f5152c56164e068c01545b7f_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-27_423a8fa8f5152c56164e068c01545b7f_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-27_423a8fa8f5152c56164e068c01545b7f_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:3012
- 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:2556

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
51KB

MD5
22059a846e9df959ae5f6fef533bf7ba

SHA1
0e044d6407057885d595e568f90555b1b3b77abe

SHA256
4106689ef698e6c06b316e923ddf668bdfe2da9661e6bb251e9d8647fd16c24a

SHA512
42a9009d2881206767bd20d8f89fbcfac0a57e5c7f224d9fc14db65ffa3e4185e3e7f447c65da58108bc3f433d138f5ac480217b244a77b0a8b6843503ed51c1

Download Submit
memory/2556-23-0x00000000002F0000-0x00000000002F6000-memory.dmp

Filesize
24KB

Download
memory/3012-0-0x0000000000330000-0x0000000000336000-memory.dmp

Filesize
24KB

Download
memory/3012-8-0x0000000000330000-0x0000000000336000-memory.dmp

Filesize
24KB

Download
memory/3012-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download