arkei | 0c6b62ee546449ef1cb2bb826ecfb03279f27946f7a516dca9fca8926c1105cf

General

Target
f9c95c502f0975bd48be913f9fabbcff.exe
Size 191KB
Sample211126-xx84fsecbk
SHA256 0c6b62ee546449ef1cb2bb826ecfb03279f27946f7a516dca9fca8926c1105cf
MD5 f9c95c502f0975bd48be913f9fabbcff
SHA1 ce464d7af866b05c8f85997e2bb9c60b87f57268
SHA512 cc7592dc5e984ae0b1721a61da74f70e383eb463d2635c9e6e3a006b061728ff1835a0762807dfb91b18ac49031e05d3de38af30683a5edca053964ee5b69dd4
MD5 SHA1 SHA512

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
behavioral2/memory/3716-119-0x0000000002030000-0x0000000002051000-memory.dmp	family_arkei
behavioral2/memory/3716-120-0x0000000000400000-0x0000000000437000-memory.dmp	family_arkei

Downloads MZ/PE file

Loads dropped DLL 3 IoCs

pid	Process
3716	f9c95c502f0975bd48be913f9fabbcff.exe
3716	f9c95c502f0975bd48be913f9fabbcff.exe
3716	f9c95c502f0975bd48be913f9fabbcff.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	f9c95c502f0975bd48be913f9fabbcff.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	f9c95c502f0975bd48be913f9fabbcff.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
3320	timeout.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3716 wrote to memory of 796	3716	f9c95c502f0975bd48be913f9fabbcff.exe	69
PID 3716 wrote to memory of 796	3716	f9c95c502f0975bd48be913f9fabbcff.exe	69
PID 3716 wrote to memory of 796	3716	f9c95c502f0975bd48be913f9fabbcff.exe	69
PID 796 wrote to memory of 3320	796	cmd.exe	71
PID 796 wrote to memory of 3320	796	cmd.exe	71
PID 796 wrote to memory of 3320	796	cmd.exe	71

C:\Users\Admin\AppData\Local\Temp\f9c95c502f0975bd48be913f9fabbcff.exe
"C:\Users\Admin\AppData\Local\Temp\f9c95c502f0975bd48be913f9fabbcff.exe"
1⤵
- Loads dropped DLL
- Checks processor information in registry
- Suspicious use of WriteProcessMemory
PID:3716
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Users\Admin\AppData\Local\Temp\f9c95c502f0975bd48be913f9fabbcff.exe" & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:796
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 5
    3⤵
    - Delays execution with timeout.exe
    PID:3320

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/3716-118-0x0000000002010000-0x0000000002024000-memory.dmp

Download

memory/3716-119-0x0000000002030000-0x0000000002051000-memory.dmp

Download

memory/3716-120-0x0000000000400000-0x0000000000437000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads