arkei | 39d0842cd4309ea2140bd8f4cffd0af9fe686e8262ac7430933b8f6b9445a137

General

Target
61c7908ba5cb2fca5b0e24b646c46e94.exe
Size 306KB
Sample220118-w2nsmscedm
SHA256 39d0842cd4309ea2140bd8f4cffd0af9fe686e8262ac7430933b8f6b9445a137
MD5 61c7908ba5cb2fca5b0e24b646c46e94
SHA1 61338a93574b9208586254caa4ad79f99d4e2a32
SHA512 3399c0859af3593d3355a7abb64e9d6630746b881564be4c12c5cb7b33682b45d35f0370f8d4ed115d5dc4b17b8dc568bc7c4419a9b751ebb4b9a1e533ae210a
MD5 SHA1 SHA512

Score

10^/10

arkei homesteadr discovery spyware stealer

Malware Config

Extracted

Family

arkei

Botnet

homesteadr

C2

http://homesteadr.link/ggate.php

Signatures

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

Arkei Stealer Payload 2 IoCs

stealer

resource	yara_rule
behavioral1/memory/1660-55-0x0000000000220000-0x000000000023C000-memory.dmp	family_arkei
behavioral1/memory/1660-56-0x0000000000400000-0x0000000000455000-memory.dmp	family_arkei

Downloads MZ/PE file

Deletes itself 1 IoCs

pid	Process
1932	cmd.exe

Loads dropped DLL 5 IoCs

pid	Process
1660	61c7908ba5cb2fca5b0e24b646c46e94.exe
1660	61c7908ba5cb2fca5b0e24b646c46e94.exe
1660	61c7908ba5cb2fca5b0e24b646c46e94.exe
1660	61c7908ba5cb2fca5b0e24b646c46e94.exe
1660	61c7908ba5cb2fca5b0e24b646c46e94.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	61c7908ba5cb2fca5b0e24b646c46e94.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	61c7908ba5cb2fca5b0e24b646c46e94.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
1928	timeout.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1660 wrote to memory of 1932	1660	61c7908ba5cb2fca5b0e24b646c46e94.exe	29
PID 1660 wrote to memory of 1932	1660	61c7908ba5cb2fca5b0e24b646c46e94.exe	29
PID 1660 wrote to memory of 1932	1660	61c7908ba5cb2fca5b0e24b646c46e94.exe	29
PID 1660 wrote to memory of 1932	1660	61c7908ba5cb2fca5b0e24b646c46e94.exe	29
PID 1932 wrote to memory of 1928	1932	cmd.exe	31
PID 1932 wrote to memory of 1928	1932	cmd.exe	31
PID 1932 wrote to memory of 1928	1932	cmd.exe	31
PID 1932 wrote to memory of 1928	1932	cmd.exe	31

C:\Users\Admin\AppData\Local\Temp\61c7908ba5cb2fca5b0e24b646c46e94.exe
"C:\Users\Admin\AppData\Local\Temp\61c7908ba5cb2fca5b0e24b646c46e94.exe"
1⤵
- Loads dropped DLL
- Checks processor information in registry
- Suspicious use of WriteProcessMemory
PID:1660
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Users\Admin\AppData\Local\Temp\61c7908ba5cb2fca5b0e24b646c46e94.exe" & exit
  2⤵
  - Deletes itself
  - Suspicious use of WriteProcessMemory
  PID:1932
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 5
    3⤵
    - Delays execution with timeout.exe
    PID:1928

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/1660-55-0x0000000000220000-0x000000000023C000-memory.dmp

Download

memory/1660-54-0x0000000000020000-0x0000000000031000-memory.dmp

Download

memory/1660-56-0x0000000000400000-0x0000000000455000-memory.dmp

Download

memory/1660-57-0x00000000754B1000-0x00000000754B3000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads