arkei | 645e91f7847884ed72c8b53ebc8d266e92a18868ae6e527a8f9baafeaf7b985e

General

Target
645e91f7847884ed72c8b53ebc8d266e92a18868ae6e527a8f9baafeaf7b985e.exe
Size 241KB
Sample220202-r2we9sacgn
SHA256 645e91f7847884ed72c8b53ebc8d266e92a18868ae6e527a8f9baafeaf7b985e
MD5 b4508ac52aefba5d74f423d360c78a89
SHA1 c33f2ad9a61c1fd5c8e602fa616b5bc916c7af5e
SHA512 06f9b478fc0b4c39a632666315af5ec750eab066bb1316c14dad7f06bc319045364e8bace95439bbec2cff92c22601f48ab2f4591f4a1f4c0ea13115c3a2c25c
MD5 SHA1 SHA512

Score

10^/10

arkei default discovery spyware stealer

Malware Config

Extracted

Family

arkei

Botnet

Default

C2

http://tuntutul.link/gate1.php

Signatures

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

Arkei Stealer Payload 1 IoCs

stealer

resource	yara_rule
behavioral1/memory/1800-117-0x0000000000400000-0x0000000002C20000-memory.dmp	family_arkei

Downloads MZ/PE file

Loads dropped DLL 3 IoCs

pid	Process
1800	645e91f7847884ed72c8b53ebc8d266e92a18868ae6e527a8f9baafeaf7b985e.exe
1800	645e91f7847884ed72c8b53ebc8d266e92a18868ae6e527a8f9baafeaf7b985e.exe
1800	645e91f7847884ed72c8b53ebc8d266e92a18868ae6e527a8f9baafeaf7b985e.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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	645e91f7847884ed72c8b53ebc8d266e92a18868ae6e527a8f9baafeaf7b985e.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	645e91f7847884ed72c8b53ebc8d266e92a18868ae6e527a8f9baafeaf7b985e.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
2784	timeout.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1800 wrote to memory of 2584	1800	645e91f7847884ed72c8b53ebc8d266e92a18868ae6e527a8f9baafeaf7b985e.exe	69
PID 1800 wrote to memory of 2584	1800	645e91f7847884ed72c8b53ebc8d266e92a18868ae6e527a8f9baafeaf7b985e.exe	69
PID 1800 wrote to memory of 2584	1800	645e91f7847884ed72c8b53ebc8d266e92a18868ae6e527a8f9baafeaf7b985e.exe	69
PID 2584 wrote to memory of 2784	2584	cmd.exe	71
PID 2584 wrote to memory of 2784	2584	cmd.exe	71
PID 2584 wrote to memory of 2784	2584	cmd.exe	71

C:\Users\Admin\AppData\Local\Temp\645e91f7847884ed72c8b53ebc8d266e92a18868ae6e527a8f9baafeaf7b985e.exe
"C:\Users\Admin\AppData\Local\Temp\645e91f7847884ed72c8b53ebc8d266e92a18868ae6e527a8f9baafeaf7b985e.exe"
1⤵
- Loads dropped DLL
- Checks processor information in registry
- Suspicious use of WriteProcessMemory
PID:1800
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Users\Admin\AppData\Local\Temp\645e91f7847884ed72c8b53ebc8d266e92a18868ae6e527a8f9baafeaf7b985e.exe" & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2584
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 5
    3⤵
    - Delays execution with timeout.exe
    PID:2784

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

Loading Replay Monitor...

Downloads

memory/1800-115-0x0000000002CA0000-0x0000000002D4E000-memory.dmp

Download

memory/1800-116-0x0000000002CA0000-0x0000000002D4E000-memory.dmp

Download

memory/1800-117-0x0000000000400000-0x0000000002C20000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads