3fac74cd7a7965caa8c87697f7b6b709eaacaa80cef36268dfc2ec5a250b3fab

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
11/05/2024, 14:18

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General

Target

2024-05-11_facfee175982b9a66be8ca21c3d86351_cryptolocker.exe
Size

54KB
MD5

facfee175982b9a66be8ca21c3d86351
SHA1

9af550fc9463af1f30778df603d630409aea1103
SHA256

3fac74cd7a7965caa8c87697f7b6b709eaacaa80cef36268dfc2ec5a250b3fab
SHA512

2dc7e698bd17647ba4c6f76acd67c253a4320d103b8109867ba2fb8374072b19067512020bacb9df00b5ac2fc5c0f9db4d593afd2672660ef35633f23167a43e
SSDEEP

768:b7o/2n1TCraU6GD1a4Xcn62tH/1/Lp17zJIfeVEuUr6s:bc/y2lm6iH/NLp17zrV9G

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000c000000013143-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2096	rewok.exe

Loads dropped DLL 1 IoCs

pid	Process
2868	2024-05-11_facfee175982b9a66be8ca21c3d86351_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
2868	2024-05-11_facfee175982b9a66be8ca21c3d86351_cryptolocker.exe
2096	rewok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2868 wrote to memory of 2096	2868	2024-05-11_facfee175982b9a66be8ca21c3d86351_cryptolocker.exe	28
PID 2868 wrote to memory of 2096	2868	2024-05-11_facfee175982b9a66be8ca21c3d86351_cryptolocker.exe	28
PID 2868 wrote to memory of 2096	2868	2024-05-11_facfee175982b9a66be8ca21c3d86351_cryptolocker.exe	28
PID 2868 wrote to memory of 2096	2868	2024-05-11_facfee175982b9a66be8ca21c3d86351_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-11_facfee175982b9a66be8ca21c3d86351_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-11_facfee175982b9a66be8ca21c3d86351_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2868
- 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:2096

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\rewok.exe

Filesize
54KB

MD5
bd9724190f45be230655212b3cc1541b

SHA1
fdc2a613b2996901caf08ab062089316306435a7

SHA256
dc18f16695d5adb7a9ad5530a9141560085b39492ccc5a25e52fb44c7bcba1bc

SHA512
09ef49d3a8f5835aa092030f43a08767f51181d148ad59a75a63cea5d97279c46b79e6aaa173dcd92a7182efa53dcefec95dc39de14d644fe7dda80b1d5a8948

Download Submit
memory/2096-23-0x00000000003F0000-0x00000000003F6000-memory.dmp

Filesize
24KB

Download
memory/2868-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2868-0-0x00000000005C0000-0x00000000005C6000-memory.dmp

Filesize
24KB

Download
memory/2868-8-0x00000000005C0000-0x00000000005C6000-memory.dmp

Filesize
24KB

Download