arkei | d6f82559be32a5739fd1c6a1eade697c8d90c331ec31cc7690dd2fdb4e70ab74

General

Target
7a856448c3542496dcad08e36d6af61c.exe
Size 283KB
Sample220123-w9gpasgda4
SHA256 d6f82559be32a5739fd1c6a1eade697c8d90c331ec31cc7690dd2fdb4e70ab74
MD5 7a856448c3542496dcad08e36d6af61c
SHA1 bd773c4c02e2f50c7cd37eccabfe076b50606d0c
SHA512 40060b96a7e718181b150219be851ddc9c0b35651452c49e7ca285d3dbc9c95878a2c444b25d34b78eafe1a1994193c033f62c29ee036864ead5d87150f55f3b
MD5 SHA1 SHA512

Score

10^/10

arkei default discovery spyware stealer

Malware Config

Extracted

Family

arkei

Botnet

Default

C2

http://coin-file-file-19.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/3608-116-0x00000000005B0000-0x00000000005CC000-memory.dmp	family_arkei
behavioral2/memory/3608-117-0x0000000000400000-0x000000000044E000-memory.dmp	family_arkei

Downloads MZ/PE file

Loads dropped DLL 3 IoCs

pid	Process
3608	7a856448c3542496dcad08e36d6af61c.exe
3608	7a856448c3542496dcad08e36d6af61c.exe
3608	7a856448c3542496dcad08e36d6af61c.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	7a856448c3542496dcad08e36d6af61c.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	7a856448c3542496dcad08e36d6af61c.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
760	timeout.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3608 wrote to memory of 2948	3608	7a856448c3542496dcad08e36d6af61c.exe	69
PID 3608 wrote to memory of 2948	3608	7a856448c3542496dcad08e36d6af61c.exe	69
PID 3608 wrote to memory of 2948	3608	7a856448c3542496dcad08e36d6af61c.exe	69
PID 2948 wrote to memory of 760	2948	cmd.exe	71
PID 2948 wrote to memory of 760	2948	cmd.exe	71
PID 2948 wrote to memory of 760	2948	cmd.exe	71

C:\Users\Admin\AppData\Local\Temp\7a856448c3542496dcad08e36d6af61c.exe
"C:\Users\Admin\AppData\Local\Temp\7a856448c3542496dcad08e36d6af61c.exe"
1⤵
- Loads dropped DLL
- Checks processor information in registry
- Suspicious use of WriteProcessMemory
PID:3608
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Users\Admin\AppData\Local\Temp\7a856448c3542496dcad08e36d6af61c.exe" & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2948
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 5
    3⤵
    - Delays execution with timeout.exe
    PID:760

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/3608-115-0x0000000000450000-0x000000000059A000-memory.dmp

Download

memory/3608-116-0x00000000005B0000-0x00000000005CC000-memory.dmp

Download

memory/3608-117-0x0000000000400000-0x000000000044E000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads