3ea9dd40fc3dc3a259c640615921bc5ba2ddd1b01d1508dcaacc9d739b908200

Analysis

max time kernel
148s
max time network
149s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
24-04-2024 17:41

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General

Target

2024-04-24_770b0ac1605cbd2fddedb0ae6d10a6b9_cryptolocker.exe
Size

36KB
MD5

770b0ac1605cbd2fddedb0ae6d10a6b9
SHA1

f3030f5debc99998f3858c4fb14276bf8d35c496
SHA256

3ea9dd40fc3dc3a259c640615921bc5ba2ddd1b01d1508dcaacc9d739b908200
SHA512

be0cd0ce6166e9e1f9aaf3ec76f96f469b22becf2d40b18ac8d7e77bb1ec1835ad5cc655335ffa297edd03a5fbfec361ad74d19694815b29ab6c230ba8c5ba61
SSDEEP

384:bmM0V/YPvnr801TRoUGPh4TKt6ATt1DqgPa3s/zzoCt9/B1RU3qE4kb6oY26J:b7o/2n1TCraU6GD1a4Xt9bRU6zA6o36J

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000a00000001224c-14.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2932	rewok.exe

Loads dropped DLL 1 IoCs

pid	Process
2964	2024-04-24_770b0ac1605cbd2fddedb0ae6d10a6b9_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
2964	2024-04-24_770b0ac1605cbd2fddedb0ae6d10a6b9_cryptolocker.exe
2932	rewok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2964 wrote to memory of 2932	2964	2024-04-24_770b0ac1605cbd2fddedb0ae6d10a6b9_cryptolocker.exe	28
PID 2964 wrote to memory of 2932	2964	2024-04-24_770b0ac1605cbd2fddedb0ae6d10a6b9_cryptolocker.exe	28
PID 2964 wrote to memory of 2932	2964	2024-04-24_770b0ac1605cbd2fddedb0ae6d10a6b9_cryptolocker.exe	28
PID 2964 wrote to memory of 2932	2964	2024-04-24_770b0ac1605cbd2fddedb0ae6d10a6b9_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-24_770b0ac1605cbd2fddedb0ae6d10a6b9_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-24_770b0ac1605cbd2fddedb0ae6d10a6b9_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2964
- C:\Users\Admin\AppData\Local\Temp\rewok.exe
  "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of UnmapMainImage
  PID:2932

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\rewok.exe

Filesize
36KB

MD5
76b943216c738938bffece6c314f0d08

SHA1
597e828206e6369c33080c04d60fe13ab35037bb

SHA256
5962c1b91bf4a665c13dd6d5667ee1914ca9307a58e3db8350715da64a136354

SHA512
7ca550465cb4cb8d00740aa3aea44426fa063735f65b79d9d4fe9acff9c5836f7c12f57da1b433905cc10e75bc9ed27e8b2b84ee34e6e7effb7bbff33ded0e4f

Download Submit
memory/2932-17-0x0000000000380000-0x0000000000386000-memory.dmp

Filesize
24KB

Download
memory/2964-0-0x00000000002A0000-0x00000000002A6000-memory.dmp

Filesize
24KB

Download
memory/2964-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2964-3-0x00000000002A0000-0x00000000002A6000-memory.dmp

Filesize
24KB

Download