a78b1d0c98fa2a4b7eb6eb9f4d5cbad57fc88835f011d07207c558340377da8b

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
15/05/2024, 19:25

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General

Target

2024-05-15_6a6a609857e36e5846441635ab0027c9_cryptolocker.exe
Size

44KB
MD5

6a6a609857e36e5846441635ab0027c9
SHA1

f188a74e9c55eeb22e350f8142a12f01ab5f00a2
SHA256

a78b1d0c98fa2a4b7eb6eb9f4d5cbad57fc88835f011d07207c558340377da8b
SHA512

5690f802114d5b447e7cf6f3c2f47959339f8f5ad1e93495763bc9961e4ec133c2432d0ba5bd4e06620884ae6654f159e8d7ab840bb1280230550b59c301e85b
SSDEEP

768:b7o/2n1TCraU6GD1a4X0WcO+wMVm+slAMphqcMy:bc/y2lkF0+Beqc

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000c00000001450b-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2160	rewok.exe

Loads dropped DLL 1 IoCs

pid	Process
1836	2024-05-15_6a6a609857e36e5846441635ab0027c9_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
1836	2024-05-15_6a6a609857e36e5846441635ab0027c9_cryptolocker.exe
2160	rewok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1836 wrote to memory of 2160	1836	2024-05-15_6a6a609857e36e5846441635ab0027c9_cryptolocker.exe	28
PID 1836 wrote to memory of 2160	1836	2024-05-15_6a6a609857e36e5846441635ab0027c9_cryptolocker.exe	28
PID 1836 wrote to memory of 2160	1836	2024-05-15_6a6a609857e36e5846441635ab0027c9_cryptolocker.exe	28
PID 1836 wrote to memory of 2160	1836	2024-05-15_6a6a609857e36e5846441635ab0027c9_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-15_6a6a609857e36e5846441635ab0027c9_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-15_6a6a609857e36e5846441635ab0027c9_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:1836
- 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:2160

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
44KB

MD5
5c4028574b16310bb17bf0d7e44eb6ee

SHA1
eda780fa2012aca403c629e471de954a1ba408e6

SHA256
a65bdd9d0755b06eb235f5aa23402a3821494a2b096ced53f1c6ca3b939e5d98

SHA512
c1026adafaaa1326300bb5bf6d67749a782d86ebeeeff163c8498a8d9e95604152ea6d1a1b767cf9e23e176691bfe31190204f3d985dec41f0dc3bf6d618f11f

Download Submit
memory/1836-0-0x0000000000370000-0x0000000000376000-memory.dmp

Filesize
24KB

Download
memory/1836-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/1836-7-0x0000000000370000-0x0000000000376000-memory.dmp

Filesize
24KB

Download
memory/2160-23-0x0000000000390000-0x0000000000396000-memory.dmp

Filesize
24KB

Download