86b3f5eb746325e3acc203d1e496259ff0b85d63ec94fec57e947e6fcfbd454d

Analysis

max time kernel
150s
max time network
156s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
18/02/2024, 19:24

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General

Target

2024-02-18_4d0a4a4682ab8d368fa13a64f316776e_cryptolocker.exe
Size

31KB
MD5

4d0a4a4682ab8d368fa13a64f316776e
SHA1

d14882de5d86183bac986c0754064c37703606ab
SHA256

86b3f5eb746325e3acc203d1e496259ff0b85d63ec94fec57e947e6fcfbd454d
SHA512

8c06ef0c6e4b5ea03694076584e6f75478a144459b0ba8320fae84e13e1cc94ad02722bc9e001171cbd760db691ffaae2697122fa69a1e48a0071b9099483116
SSDEEP

384:bmM0V/YPvnr801TRoUGPh4TKt6ATt1DqgPa3s/zzoCt96Jg57:b7o/2n1TCraU6GD1a4Xt94u

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000b000000012243-13.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2852	rewok.exe

Loads dropped DLL 1 IoCs

pid	Process
2040	2024-02-18_4d0a4a4682ab8d368fa13a64f316776e_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
2040	2024-02-18_4d0a4a4682ab8d368fa13a64f316776e_cryptolocker.exe
2852	rewok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2040 wrote to memory of 2852	2040	2024-02-18_4d0a4a4682ab8d368fa13a64f316776e_cryptolocker.exe	28
PID 2040 wrote to memory of 2852	2040	2024-02-18_4d0a4a4682ab8d368fa13a64f316776e_cryptolocker.exe	28
PID 2040 wrote to memory of 2852	2040	2024-02-18_4d0a4a4682ab8d368fa13a64f316776e_cryptolocker.exe	28
PID 2040 wrote to memory of 2852	2040	2024-02-18_4d0a4a4682ab8d368fa13a64f316776e_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-18_4d0a4a4682ab8d368fa13a64f316776e_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-18_4d0a4a4682ab8d368fa13a64f316776e_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2040
- 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:2852

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
32KB

MD5
c5d707c6dc5dd2fa8075e31181302c76

SHA1
b775bec975f989c16df0853977746de8051f3c92

SHA256
7caf2d1c1996f5733819807a6934953696f0049e2ffb3460ccff13d4f7cf77b3

SHA512
fea550f89e9a7cf642032030a16ab4330e8810acebe6bd6bf7d87d1ae514bc489e780b2c0b8ada18c3910e2603aa0255b93836acd57aee88368eaab0dd550eb3

Download Submit
memory/2040-0-0x00000000002E0000-0x00000000002E6000-memory.dmp

Filesize
24KB

Download
memory/2040-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2040-2-0x00000000002E0000-0x00000000002E6000-memory.dmp

Filesize
24KB

Download
memory/2852-16-0x00000000001F0000-0x00000000001F6000-memory.dmp

Filesize
24KB

Download