arkei | eb6fb505e92bf049294b75bd541b3fd572521bcc3eae5393b0b89290e3504ad8

General

Target

eb6fb505e92bf049294b75bd541b3fd572521bcc3eae5393b0b89290e3504ad8.exe
Size

343KB
MD5

fe8b30e756e7519fcdcfd6281dc4c2c6
SHA1

fc216549bfb23f949a29233ebefaab409f02b8ca
SHA256

eb6fb505e92bf049294b75bd541b3fd572521bcc3eae5393b0b89290e3504ad8
SHA512

4f64572122da3f885cdf74df2a3fcf159373ac2f5b39148b11dd0eaf6822c7be675c498af103ac9d222af32fe30fe387eb689d07f5ed03cfc53a9fe6e1cb5fcd

Score

10^/10

arkei default discovery spyware stealer

Malware Config

Extracted

Family

arkei

Botnet

Default

C2

http://file-file-host4.com/tratata.php

Signatures

Arkei
Arkei is an infostealer written in C++.
stealer arkei

Arkei Stealer Payload 1 IoCs

stealer

resource	yara_rule
behavioral1/memory/2636-117-0x0000000000400000-0x00000000023AC000-memory.dmp	family_arkei

Downloads MZ/PE file

Loads dropped DLL 3 IoCs

pid	Process
2636	eb6fb505e92bf049294b75bd541b3fd572521bcc3eae5393b0b89290e3504ad8.exe
2636	eb6fb505e92bf049294b75bd541b3fd572521bcc3eae5393b0b89290e3504ad8.exe
2636	eb6fb505e92bf049294b75bd541b3fd572521bcc3eae5393b0b89290e3504ad8.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081
Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

Data from Local System
T1005

Credentials in Files
T1081
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	eb6fb505e92bf049294b75bd541b3fd572521bcc3eae5393b0b89290e3504ad8.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	eb6fb505e92bf049294b75bd541b3fd572521bcc3eae5393b0b89290e3504ad8.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
4084	timeout.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2636 wrote to memory of 1572	2636	eb6fb505e92bf049294b75bd541b3fd572521bcc3eae5393b0b89290e3504ad8.exe	69
PID 2636 wrote to memory of 1572	2636	eb6fb505e92bf049294b75bd541b3fd572521bcc3eae5393b0b89290e3504ad8.exe	69
PID 2636 wrote to memory of 1572	2636	eb6fb505e92bf049294b75bd541b3fd572521bcc3eae5393b0b89290e3504ad8.exe	69
PID 1572 wrote to memory of 4084	1572	cmd.exe	71
PID 1572 wrote to memory of 4084	1572	cmd.exe	71
PID 1572 wrote to memory of 4084	1572	cmd.exe	71

C:\Users\Admin\AppData\Local\Temp\eb6fb505e92bf049294b75bd541b3fd572521bcc3eae5393b0b89290e3504ad8.exe
"C:\Users\Admin\AppData\Local\Temp\eb6fb505e92bf049294b75bd541b3fd572521bcc3eae5393b0b89290e3504ad8.exe"
1⤵
- Loads dropped DLL
- Checks processor information in registry
- Suspicious use of WriteProcessMemory
PID:2636
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Users\Admin\AppData\Local\Temp\eb6fb505e92bf049294b75bd541b3fd572521bcc3eae5393b0b89290e3504ad8.exe" & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1572
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 5
    3⤵
    - Delays execution with timeout.exe
    PID:4084

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

2

T1081

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Data from Local System

2

T1005

Command and Control

Exfiltration

Impact

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Downloads

memory/2636-115-0x00000000025F9000-0x000000000260D000-memory.dmp

Filesize
80KB

Download
memory/2636-116-0x00000000024B0000-0x00000000025FA000-memory.dmp

Filesize
1.3MB

Download
memory/2636-117-0x0000000000400000-0x00000000023AC000-memory.dmp

Filesize
31.7MB

Download

Analysis

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