arkei | 029f52496f4fa2f85e5a7b759256c181486f08bdc040648730542279354304f1

General

Target
029f52496f4fa2f85e5a7b759256c181486f08bdc040648730542279354304f1.exe
Size 241KB
Sample220202-j7wdfshebl
SHA256 029f52496f4fa2f85e5a7b759256c181486f08bdc040648730542279354304f1
MD5 3a735ebc5702e02109dd8ab950b390c0
SHA1 37b5eaeac95eaf30e93f5b10b22ed1f93a1247e2
SHA512 0c44290d5a934b91d0f250358483f4e58b34afc35aabf8bfc6dd9291f2614a919c57c4d02a53491be6558aeb412a3aed6f2d7f749c08335a1b373cda6a4392a0
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
behavioral1/memory/1640-115-0x0000000002DB0000-0x0000000002DCC000-memory.dmp	family_arkei
behavioral1/memory/1640-116-0x0000000000400000-0x0000000002C20000-memory.dmp	family_arkei

Downloads MZ/PE file

Loads dropped DLL 3 IoCs

pid	Process
1640	029f52496f4fa2f85e5a7b759256c181486f08bdc040648730542279354304f1.exe
1640	029f52496f4fa2f85e5a7b759256c181486f08bdc040648730542279354304f1.exe
1640	029f52496f4fa2f85e5a7b759256c181486f08bdc040648730542279354304f1.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	029f52496f4fa2f85e5a7b759256c181486f08bdc040648730542279354304f1.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	029f52496f4fa2f85e5a7b759256c181486f08bdc040648730542279354304f1.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
2512	timeout.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1640 wrote to memory of 2240	1640	029f52496f4fa2f85e5a7b759256c181486f08bdc040648730542279354304f1.exe	69
PID 1640 wrote to memory of 2240	1640	029f52496f4fa2f85e5a7b759256c181486f08bdc040648730542279354304f1.exe	69
PID 1640 wrote to memory of 2240	1640	029f52496f4fa2f85e5a7b759256c181486f08bdc040648730542279354304f1.exe	69
PID 2240 wrote to memory of 2512	2240	cmd.exe	71
PID 2240 wrote to memory of 2512	2240	cmd.exe	71
PID 2240 wrote to memory of 2512	2240	cmd.exe	71

C:\Users\Admin\AppData\Local\Temp\029f52496f4fa2f85e5a7b759256c181486f08bdc040648730542279354304f1.exe
"C:\Users\Admin\AppData\Local\Temp\029f52496f4fa2f85e5a7b759256c181486f08bdc040648730542279354304f1.exe"
1⤵
- Loads dropped DLL
- Checks processor information in registry
- Suspicious use of WriteProcessMemory
PID:1640
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Users\Admin\AppData\Local\Temp\029f52496f4fa2f85e5a7b759256c181486f08bdc040648730542279354304f1.exe" & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2240
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 5
    3⤵
    - Delays execution with timeout.exe
    PID:2512

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/1640-114-0x0000000002D90000-0x0000000002DA1000-memory.dmp

Download

memory/1640-115-0x0000000002DB0000-0x0000000002DCC000-memory.dmp

Download

memory/1640-116-0x0000000000400000-0x0000000002C20000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads