arkei | 438acfda9ebe75b126a2100b2492d3bcd42ed63808fa17a18fd944ff0a2486c6

Resubmissions

26/01/2022, 14:51

220126-r8bdnseec710

26/01/2022, 00:19

220126-amcaeaadan1

Analysis

max time kernel
45s
max time network
61s
platform
windows10_x64
resource
win10-en-20211208
submitted
26/01/2022, 14:51

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General

Target
438acfda9ebe75b126a2100b2492d3bcd42ed63808fa17a18fd944ff0a2486c6.exe
Size 350KB
Sample220126-r8bdnseec7
SHA256 438acfda9ebe75b126a2100b2492d3bcd42ed63808fa17a18fd944ff0a2486c6
MD5 3e80e94c1d7f450368170229f9c3883f
SHA1 ac8904a52d7ee81153b64139f329f35a43fec7b3
SHA512 74d6ed67a2f31091c4a3c05ecd034cf897ace203469099d5a680fe60647d4a17572a8d390cad2f52a9f8c61a684c2cc0224eb89f50d8d8be480e9c392c655c9b
MD5 SHA1 SHA512

Score

10^/10

arkei default discovery spyware stealer

Malware Config

Extracted

Family

arkei

Botnet

Default

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/2940-119-0x00000000004C0000-0x00000000004DC000-memory.dmp	family_arkei
behavioral2/memory/2940-120-0x0000000000400000-0x000000000045F000-memory.dmp	family_arkei

Downloads MZ/PE file

Loads dropped DLL 3 IoCs

pid	Process
2940	438acfda9ebe75b126a2100b2492d3bcd42ed63808fa17a18fd944ff0a2486c6.exe
2940	438acfda9ebe75b126a2100b2492d3bcd42ed63808fa17a18fd944ff0a2486c6.exe
2940	438acfda9ebe75b126a2100b2492d3bcd42ed63808fa17a18fd944ff0a2486c6.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	438acfda9ebe75b126a2100b2492d3bcd42ed63808fa17a18fd944ff0a2486c6.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	438acfda9ebe75b126a2100b2492d3bcd42ed63808fa17a18fd944ff0a2486c6.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
756	timeout.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2940 wrote to memory of 3576	2940	438acfda9ebe75b126a2100b2492d3bcd42ed63808fa17a18fd944ff0a2486c6.exe	68
PID 2940 wrote to memory of 3576	2940	438acfda9ebe75b126a2100b2492d3bcd42ed63808fa17a18fd944ff0a2486c6.exe	68
PID 2940 wrote to memory of 3576	2940	438acfda9ebe75b126a2100b2492d3bcd42ed63808fa17a18fd944ff0a2486c6.exe	68
PID 3576 wrote to memory of 756	3576	cmd.exe	70
PID 3576 wrote to memory of 756	3576	cmd.exe	70
PID 3576 wrote to memory of 756	3576	cmd.exe	70

C:\Users\Admin\AppData\Local\Temp\438acfda9ebe75b126a2100b2492d3bcd42ed63808fa17a18fd944ff0a2486c6.exe
"C:\Users\Admin\AppData\Local\Temp\438acfda9ebe75b126a2100b2492d3bcd42ed63808fa17a18fd944ff0a2486c6.exe"
1⤵
- Loads dropped DLL
- Checks processor information in registry
- Suspicious use of WriteProcessMemory
PID:2940
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Users\Admin\AppData\Local\Temp\438acfda9ebe75b126a2100b2492d3bcd42ed63808fa17a18fd944ff0a2486c6.exe" & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3576
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 5
    3⤵
    - Delays execution with timeout.exe
    PID:756

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

T1081

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

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Downloads

memory/2940-118-0x00000000004A0000-0x00000000004B1000-memory.dmp

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memory/2940-119-0x00000000004C0000-0x00000000004DC000-memory.dmp

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memory/2940-120-0x0000000000400000-0x000000000045F000-memory.dmp

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Resubmissions

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads