arkei | 3d4cc95368692c888429bc779eb0c055d49d144922d2975af66323ed4635fced

General

Target

3d4cc95368692c888429bc779eb0c055d49d144922d2975af66323ed4635fced.exe
Size

342KB
MD5

07e8c5a0c8bafa8b3adf02fa04fcd4fc
SHA1

e8f4ce3ecb3794718cbdeaef6e2ffeb6abedad0a
SHA256

3d4cc95368692c888429bc779eb0c055d49d144922d2975af66323ed4635fced
SHA512

105763b936468e9db2873e082946671760927f75e077a7cab655015923027a9090b457dbceb73e2f31b254664d70accfa438c18e332cd396bbaaaaad20812cc0

Score

10^/10

arkei default discovery spyware stealer

Malware Config

Extracted

Family

arkei

Botnet

Default

C2

http://file-file-host4.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/4064-116-0x0000000004500000-0x0000000004521000-memory.dmp	family_arkei
behavioral1/memory/4064-117-0x0000000000400000-0x000000000277D000-memory.dmp	family_arkei

Downloads MZ/PE file

Loads dropped DLL 3 IoCs

pid	Process
4064	3d4cc95368692c888429bc779eb0c055d49d144922d2975af66323ed4635fced.exe
4064	3d4cc95368692c888429bc779eb0c055d49d144922d2975af66323ed4635fced.exe
4064	3d4cc95368692c888429bc779eb0c055d49d144922d2975af66323ed4635fced.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	3d4cc95368692c888429bc779eb0c055d49d144922d2975af66323ed4635fced.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	3d4cc95368692c888429bc779eb0c055d49d144922d2975af66323ed4635fced.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
3148	timeout.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4064 wrote to memory of 60	4064	3d4cc95368692c888429bc779eb0c055d49d144922d2975af66323ed4635fced.exe	68
PID 4064 wrote to memory of 60	4064	3d4cc95368692c888429bc779eb0c055d49d144922d2975af66323ed4635fced.exe	68
PID 4064 wrote to memory of 60	4064	3d4cc95368692c888429bc779eb0c055d49d144922d2975af66323ed4635fced.exe	68
PID 60 wrote to memory of 3148	60	cmd.exe	70
PID 60 wrote to memory of 3148	60	cmd.exe	70
PID 60 wrote to memory of 3148	60	cmd.exe	70

C:\Users\Admin\AppData\Local\Temp\3d4cc95368692c888429bc779eb0c055d49d144922d2975af66323ed4635fced.exe
"C:\Users\Admin\AppData\Local\Temp\3d4cc95368692c888429bc779eb0c055d49d144922d2975af66323ed4635fced.exe"
1⤵
- Loads dropped DLL
- Checks processor information in registry
- Suspicious use of WriteProcessMemory
PID:4064
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Users\Admin\AppData\Local\Temp\3d4cc95368692c888429bc779eb0c055d49d144922d2975af66323ed4635fced.exe" & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:60
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 5
    3⤵
    - Delays execution with timeout.exe
    PID:3148

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

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Downloads

memory/4064-115-0x0000000002A49000-0x0000000002A5D000-memory.dmp

Filesize
80KB

Download
memory/4064-116-0x0000000004500000-0x0000000004521000-memory.dmp

Filesize
132KB

Download
memory/4064-117-0x0000000000400000-0x000000000277D000-memory.dmp

Filesize
35.5MB

Download

Analysis

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