fcb02cd409a98138868a350bfb05f3ce259b7c11888a651d9360d837459f58ca

Analysis

max time kernel
148s
max time network
149s
platform
windows7_x64
resource
win7-20240419-en
resource tags

arch:x64arch:x86image:win7-20240419-enlocale:en-usos:windows7-x64system
submitted
31/05/2024, 09:37

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General

Target

2024-05-31_51447b226dfe0dc0c87f956799efb3aa_cryptolocker.exe
Size

45KB
MD5

51447b226dfe0dc0c87f956799efb3aa
SHA1

9dd3af0cf7e5319c51ab1e92433d9893f0d73742
SHA256

fcb02cd409a98138868a350bfb05f3ce259b7c11888a651d9360d837459f58ca
SHA512

c00f177ffefafc1672939614d63c6df06324c3c8ea03ed3dea3234c418c4054196be1e874090781968d50744ab480868bf52f351dffd7458c2ac87dad603419b
SSDEEP

768:b7o/2n1TCraU6GD1a4X0WcO+wMVm+slAMphqK:bc/y2lkF0+BeqK

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000c000000012279-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2684	rewok.exe

Loads dropped DLL 1 IoCs

pid	Process
1704	2024-05-31_51447b226dfe0dc0c87f956799efb3aa_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
1704	2024-05-31_51447b226dfe0dc0c87f956799efb3aa_cryptolocker.exe
2684	rewok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1704 wrote to memory of 2684	1704	2024-05-31_51447b226dfe0dc0c87f956799efb3aa_cryptolocker.exe	28
PID 1704 wrote to memory of 2684	1704	2024-05-31_51447b226dfe0dc0c87f956799efb3aa_cryptolocker.exe	28
PID 1704 wrote to memory of 2684	1704	2024-05-31_51447b226dfe0dc0c87f956799efb3aa_cryptolocker.exe	28
PID 1704 wrote to memory of 2684	1704	2024-05-31_51447b226dfe0dc0c87f956799efb3aa_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-31_51447b226dfe0dc0c87f956799efb3aa_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-31_51447b226dfe0dc0c87f956799efb3aa_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:1704
- 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:2684

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
46KB

MD5
9b696e4eef9923724f061cccb6eee3bd

SHA1
6b219223cc5a73389ef50c6ec77959bce5402818

SHA256
371672d4408db3d29137a48fc048370b4f861ba3f12612e07527640b8ae2545f

SHA512
88f353497190ce75b20d7050d9963a4a462c3261134b3aaa7815ea74b0c94ebaf40eeca5062c49d2269524d232bb452658e7c634e14e2d1d099d33e19a93ab97

Download Submit
memory/1704-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/1704-8-0x00000000002D0000-0x00000000002D6000-memory.dmp

Filesize
24KB

Download
memory/1704-0-0x00000000002D0000-0x00000000002D6000-memory.dmp

Filesize
24KB

Download
memory/2684-23-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download