arkei | 456929e5e3076663907d4edb20324e4513bcd4846583e6460baf5a1808e3bc4f

General

Target

456929e5e3076663907d4edb20324e4513bcd4846583e6460baf5a1808e3bc4f.exe
Size

342KB
MD5

1b0e4e52f021de8f4d0fb5ac89ddfa21
SHA1

a8a2378ff48cc90e1b2a551d1724a124c910d614
SHA256

456929e5e3076663907d4edb20324e4513bcd4846583e6460baf5a1808e3bc4f
SHA512

25e842dbd7f298bf7ee4127983140f275e521d34e4047ca3b7d22e75ffde542ee55a494e17e80186872b75476a16b5020e1e02850c7efb4aad3bd94bcb49bc86

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 2 IoCs

stealer

resource	yara_rule
behavioral1/memory/584-117-0x0000000000400000-0x000000000277D000-memory.dmp	family_arkei
behavioral1/memory/584-116-0x0000000004360000-0x0000000004381000-memory.dmp	family_arkei

Downloads MZ/PE file

Loads dropped DLL 3 IoCs

pid	Process
584	456929e5e3076663907d4edb20324e4513bcd4846583e6460baf5a1808e3bc4f.exe
584	456929e5e3076663907d4edb20324e4513bcd4846583e6460baf5a1808e3bc4f.exe
584	456929e5e3076663907d4edb20324e4513bcd4846583e6460baf5a1808e3bc4f.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	456929e5e3076663907d4edb20324e4513bcd4846583e6460baf5a1808e3bc4f.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	456929e5e3076663907d4edb20324e4513bcd4846583e6460baf5a1808e3bc4f.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
2864	timeout.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 584 wrote to memory of 588	584	456929e5e3076663907d4edb20324e4513bcd4846583e6460baf5a1808e3bc4f.exe	69
PID 584 wrote to memory of 588	584	456929e5e3076663907d4edb20324e4513bcd4846583e6460baf5a1808e3bc4f.exe	69
PID 584 wrote to memory of 588	584	456929e5e3076663907d4edb20324e4513bcd4846583e6460baf5a1808e3bc4f.exe	69
PID 588 wrote to memory of 2864	588	cmd.exe	71
PID 588 wrote to memory of 2864	588	cmd.exe	71
PID 588 wrote to memory of 2864	588	cmd.exe	71

C:\Users\Admin\AppData\Local\Temp\456929e5e3076663907d4edb20324e4513bcd4846583e6460baf5a1808e3bc4f.exe
"C:\Users\Admin\AppData\Local\Temp\456929e5e3076663907d4edb20324e4513bcd4846583e6460baf5a1808e3bc4f.exe"
1⤵
- Loads dropped DLL
- Checks processor information in registry
- Suspicious use of WriteProcessMemory
PID:584
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Users\Admin\AppData\Local\Temp\456929e5e3076663907d4edb20324e4513bcd4846583e6460baf5a1808e3bc4f.exe" & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:588
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 5
    3⤵
    - Delays execution with timeout.exe
    PID:2864

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

Replay Monitor

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Downloads

memory/584-117-0x0000000000400000-0x000000000277D000-memory.dmp

Filesize
35.5MB

Download
memory/584-116-0x0000000004360000-0x0000000004381000-memory.dmp

Filesize
132KB

Download

Analysis

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