arkei | f938a7c0ebc32402cc6d0a2535eaac499468a2eadab4d38337fe6ddcce5eb7d2

General

Target
577d894cb539916b5e50410aac17d8ca.exe
Size 353KB
Sample220211-wtqx2aefan
SHA256 f938a7c0ebc32402cc6d0a2535eaac499468a2eadab4d38337fe6ddcce5eb7d2
MD5 577d894cb539916b5e50410aac17d8ca
SHA1 cd9c1e5ad52d3bdca36f4fb4ebfa0f370d03eae9
SHA512 b7d54d08f9b53c2249bf42db566ac80889d9418dafdaa583c3aa2933af0c63f1de247ba9178c433eafffbccfb1137f7ae3676198606d493837d9b7d60c7fe635
MD5 SHA1 SHA512

Score

10^/10

arkei dafault discovery spyware stealer

Malware Config

Extracted

Family

arkei

Botnet

Dafault

C2

http://googa.link/gate1.php

Signatures

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

Arkei Stealer Payload 2 IoCs

stealer

resource	yara_rule
behavioral1/memory/1952-57-0x0000000000220000-0x000000000023F000-memory.dmp	family_arkei
behavioral1/memory/1952-58-0x0000000000400000-0x0000000000431000-memory.dmp	family_arkei

Downloads MZ/PE file

Deletes itself 1 IoCs

pid	Process
2036	cmd.exe

Loads dropped DLL 5 IoCs

pid	Process
1952	577d894cb539916b5e50410aac17d8ca.exe
1952	577d894cb539916b5e50410aac17d8ca.exe
1952	577d894cb539916b5e50410aac17d8ca.exe
1952	577d894cb539916b5e50410aac17d8ca.exe
1952	577d894cb539916b5e50410aac17d8ca.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	577d894cb539916b5e50410aac17d8ca.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	577d894cb539916b5e50410aac17d8ca.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
1568	timeout.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1952 wrote to memory of 2036	1952	577d894cb539916b5e50410aac17d8ca.exe	29
PID 1952 wrote to memory of 2036	1952	577d894cb539916b5e50410aac17d8ca.exe	29
PID 1952 wrote to memory of 2036	1952	577d894cb539916b5e50410aac17d8ca.exe	29
PID 1952 wrote to memory of 2036	1952	577d894cb539916b5e50410aac17d8ca.exe	29
PID 2036 wrote to memory of 1568	2036	cmd.exe	31
PID 2036 wrote to memory of 1568	2036	cmd.exe	31
PID 2036 wrote to memory of 1568	2036	cmd.exe	31
PID 2036 wrote to memory of 1568	2036	cmd.exe	31

C:\Users\Admin\AppData\Local\Temp\577d894cb539916b5e50410aac17d8ca.exe
"C:\Users\Admin\AppData\Local\Temp\577d894cb539916b5e50410aac17d8ca.exe"
1⤵
- Loads dropped DLL
- Checks processor information in registry
- Suspicious use of WriteProcessMemory
PID:1952
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Users\Admin\AppData\Local\Temp\577d894cb539916b5e50410aac17d8ca.exe" & exit
  2⤵
  - Deletes itself
  - Suspicious use of WriteProcessMemory
  PID:2036
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 5
    3⤵
    - Delays execution with timeout.exe
    PID:1568

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/1952-55-0x0000000002C9D000-0x0000000002CB1000-memory.dmp

Download

memory/1952-56-0x0000000002C9D000-0x0000000002CB1000-memory.dmp

Download

memory/1952-57-0x0000000000220000-0x000000000023F000-memory.dmp

Download

memory/1952-58-0x0000000000400000-0x0000000000431000-memory.dmp

Download

memory/1952-59-0x0000000074B21000-0x0000000074B23000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads