arkei | 512dc0eb39c47b1318bee3c92b450f35e66c8bdfd32035c696babdcb2001f090

General

Target

512dc0eb39c47b1318bee3c92b450f35e66c8bdfd32035c696babdcb2001f090.exe
Size

343KB
MD5

228b5967460e6e74796a9bcd92036347
SHA1

ac0160e43279f84a8e9507b93d7a1097904772d6
SHA256

512dc0eb39c47b1318bee3c92b450f35e66c8bdfd32035c696babdcb2001f090
SHA512

b07ac5f1f3b9fef3f67fc65ba06e2083b598dcf7c13ff430edd1cc29017a25d9a0a281ac4bf4a4ae2c53ea15535ff5d36caa72a80fbc7c46374a267de9dac7f2

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/2844-119-0x0000000004360000-0x0000000004381000-memory.dmp	family_arkei
behavioral1/memory/2844-120-0x0000000000400000-0x000000000277D000-memory.dmp	family_arkei

Downloads MZ/PE file

Loads dropped DLL 3 IoCs

pid	Process
2844	512dc0eb39c47b1318bee3c92b450f35e66c8bdfd32035c696babdcb2001f090.exe
2844	512dc0eb39c47b1318bee3c92b450f35e66c8bdfd32035c696babdcb2001f090.exe
2844	512dc0eb39c47b1318bee3c92b450f35e66c8bdfd32035c696babdcb2001f090.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	512dc0eb39c47b1318bee3c92b450f35e66c8bdfd32035c696babdcb2001f090.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	512dc0eb39c47b1318bee3c92b450f35e66c8bdfd32035c696babdcb2001f090.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
3956	timeout.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2844 wrote to memory of 1572	2844	512dc0eb39c47b1318bee3c92b450f35e66c8bdfd32035c696babdcb2001f090.exe	69
PID 2844 wrote to memory of 1572	2844	512dc0eb39c47b1318bee3c92b450f35e66c8bdfd32035c696babdcb2001f090.exe	69
PID 2844 wrote to memory of 1572	2844	512dc0eb39c47b1318bee3c92b450f35e66c8bdfd32035c696babdcb2001f090.exe	69
PID 1572 wrote to memory of 3956	1572	cmd.exe	71
PID 1572 wrote to memory of 3956	1572	cmd.exe	71
PID 1572 wrote to memory of 3956	1572	cmd.exe	71

C:\Users\Admin\AppData\Local\Temp\512dc0eb39c47b1318bee3c92b450f35e66c8bdfd32035c696babdcb2001f090.exe
"C:\Users\Admin\AppData\Local\Temp\512dc0eb39c47b1318bee3c92b450f35e66c8bdfd32035c696babdcb2001f090.exe"
1⤵
- Loads dropped DLL
- Checks processor information in registry
- Suspicious use of WriteProcessMemory
PID:2844
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Users\Admin\AppData\Local\Temp\512dc0eb39c47b1318bee3c92b450f35e66c8bdfd32035c696babdcb2001f090.exe" & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1572
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 5
    3⤵
    - Delays execution with timeout.exe
    PID:3956

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/2844-119-0x0000000004360000-0x0000000004381000-memory.dmp

Filesize
132KB

Download
memory/2844-120-0x0000000000400000-0x000000000277D000-memory.dmp

Filesize
35.5MB

Download

Analysis

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