56b65b83430e22abf02b8dccec745dbe24cbe0192d7b0b2e7524e4cc1af2b873

Analysis

max time kernel
149s
max time network
149s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
22/04/2024, 08:28

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General

Target

2024-04-22_1106b8a40001847b508782978cd13b68_cryptolocker.exe
Size

43KB
MD5

1106b8a40001847b508782978cd13b68
SHA1

c0519b8ddc6264b8d554dab12a1d34cfaaf0fa1f
SHA256

56b65b83430e22abf02b8dccec745dbe24cbe0192d7b0b2e7524e4cc1af2b873
SHA512

ddb340191174773c505bd4be41efaa4f162f627dac4a3386ecd61c0ac066b7c4738acced89f53d5578f447ea98b6a495bb2b399c616962c1c2b5d79149e3e4b2
SSDEEP

768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGpebVIYLHA3Kx6:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XP

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000c000000012329-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x000c000000012329-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
3032	hurok.exe

Loads dropped DLL 1 IoCs

pid	Process
3068	2024-04-22_1106b8a40001847b508782978cd13b68_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
3068	2024-04-22_1106b8a40001847b508782978cd13b68_cryptolocker.exe
3032	hurok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 3068 wrote to memory of 3032	3068	2024-04-22_1106b8a40001847b508782978cd13b68_cryptolocker.exe	28
PID 3068 wrote to memory of 3032	3068	2024-04-22_1106b8a40001847b508782978cd13b68_cryptolocker.exe	28
PID 3068 wrote to memory of 3032	3068	2024-04-22_1106b8a40001847b508782978cd13b68_cryptolocker.exe	28
PID 3068 wrote to memory of 3032	3068	2024-04-22_1106b8a40001847b508782978cd13b68_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-22_1106b8a40001847b508782978cd13b68_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-22_1106b8a40001847b508782978cd13b68_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:3068
- 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:3032

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
43KB

MD5
15b58c275d7699fb30e004b3d92c7492

SHA1
d60f9d7c61a4205040a92631245b3222b32fe20e

SHA256
5e953ef33d198b98621f332967088c96918308e24f7bcc498147acb8456cd95d

SHA512
5cec71dea94dab0ae62d7e6c5587218d13c4f2cd6dcf128c4eda04ac60407507c63651d5d9c25ddf3cca7d4a71d30904552bfee4e5eb30e249b1bdadfeb1f6c4

Download Submit
memory/3032-18-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download
memory/3068-0-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download
memory/3068-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/3068-1-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download