0dece21d96c03a117042df9c219dd346d027508a9e3f0e1f1895ca4ecfd1de8f

Analysis

max time kernel
150s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20240221-en
resource tags

arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
submitted
21-02-2024 18:32

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General

Target

2024-02-21_4a6ef11d3c9e812194165f3d2362bb87_cryptolocker.exe
Size

385KB
MD5

4a6ef11d3c9e812194165f3d2362bb87
SHA1

33d59e026c06b9d78be320e2d2fa351fb71d5b81
SHA256

0dece21d96c03a117042df9c219dd346d027508a9e3f0e1f1895ca4ecfd1de8f
SHA512

a9cb5cc4fc79c76e7639b010c72b683392e3797e182fe626fa7f92537568ef19719e5409184ee5f468e65f142b58ee7632545d75e814635d7c7450745f743276
SSDEEP

6144:nnOsaQgAOjvrZFODJjBz3j1jTqQy6v2GGnugOtihzXo:nnOflT/ZFIjBz3xjTxynGUOUhXo

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00070000000231f1-12.dat	CryptoLocker_rule2

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2132103209-3755304320-2959162027-1000\Control Panel\International\Geo\Nation	2024-02-21_4a6ef11d3c9e812194165f3d2362bb87_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
5104	hasfj.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2780 wrote to memory of 5104	2780	2024-02-21_4a6ef11d3c9e812194165f3d2362bb87_cryptolocker.exe	87
PID 2780 wrote to memory of 5104	2780	2024-02-21_4a6ef11d3c9e812194165f3d2362bb87_cryptolocker.exe	87
PID 2780 wrote to memory of 5104	2780	2024-02-21_4a6ef11d3c9e812194165f3d2362bb87_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-02-21_4a6ef11d3c9e812194165f3d2362bb87_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-21_4a6ef11d3c9e812194165f3d2362bb87_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2780
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:5104

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

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\hasfj.exe

Filesize
386KB

MD5
86820e59163fdb3fb2120f897d72a005

SHA1
28858dec1bb85864340a7d3f7d9dc6e8030a011b

SHA256
a4cd8fb324a353a5a5bc2467986d40cd70c89d133e3e818596d322529a96595a

SHA512
87f0e4f71461747678413e74c0e8fea475e9b86d1db58c1bd5042388ac27321c195ea82f684d24dd5490a5af4a779adea72e465865f91b8648c52629bc4b8f6c

Download Submit
memory/2780-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/2780-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/2780-2-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download
memory/5104-17-0x0000000003010000-0x0000000003016000-memory.dmp

Filesize
24KB

Download
memory/5104-18-0x0000000002120000-0x0000000002126000-memory.dmp

Filesize
24KB

Download