arkei | df17f6f93bf7a187f675f7246a862dac1eef92b6ecfb4d3c99aea573f3492f23

General

Target

df17f6f93bf7a187f675f7246a862dac1eef92b6ecfb4d3c99aea573f3492f23.exe
Size

322KB
MD5

f21c3cdf44c7c0f5c380dcd447a26f09
SHA1

b1c0dd60ced6f57fb81e8bcee096aa6d20a6455e
SHA256

df17f6f93bf7a187f675f7246a862dac1eef92b6ecfb4d3c99aea573f3492f23
SHA512

66cf4e6eb78c58e7c8336ae162c66de40a9b6dbdfecd06d8b8f684ef4e39007c1b6cac71729c6e27d19c4eb5e65fb5a5a884c672cc6d3e4ee748a289e5abd76e

Score

10^/10

arkei default 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
Suspicious use of NtCreateProcessExOtherParentProcess 1 IoCs

Processes:

WerFault.exe

description pid process target process

PID 3632 created 1728 3632 WerFault.exe df17f6f93bf7a187f675f7246a862dac1eef92b6ecfb4d3c99aea573f3492f23.exe

description	pid	process	target process
PID 3632 created 1728	3632	WerFault.exe	df17f6f93bf7a187f675f7246a862dac1eef92b6ecfb4d3c99aea573f3492f23.exe

Arkei Stealer Payload 2 IoCs

stealer

Processes:

resource	yara_rule
behavioral1/memory/1728-132-0x0000000000400000-0x0000000000560000-memory.dmp	family_arkei
behavioral1/memory/1728-131-0x0000000000700000-0x000000000071C000-memory.dmp	family_arkei

Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

2384 1728 WerFault.exe df17f6f93bf7a187f675f7246a862dac1eef92b6ecfb4d3c99aea573f3492f23.exe

pid	pid_target	process	target process
2384	1728	WerFault.exe	df17f6f93bf7a187f675f7246a862dac1eef92b6ecfb4d3c99aea573f3492f23.exe

Checks processor information in registry 2 TTPs 5 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

WerFault.exeMusNotification.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	WerFault.exe
Key opened	\Registry\Machine\HARDWARE\DESCRIPTION\System\CentralProcessor\0	MusNotification.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	MusNotification.exe
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	WerFault.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	WerFault.exe

Enumerates system info in registry 2 TTPs 2 IoCs

Query Registry

T1012

System Information Discovery

T1082

Processes:

WerFault.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	WerFault.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	WerFault.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

WerFault.exe

pid process

2384 WerFault.exe
2384 WerFault.exe

pid	process
2384	WerFault.exe
2384	WerFault.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

MusNotification.exeWerFault.exe

description	pid	process
Token: SeShutdownPrivilege	1996	MusNotification.exe
Token: SeCreatePagefilePrivilege	1996	MusNotification.exe
Token: SeRestorePrivilege	2384	WerFault.exe
Token: SeBackupPrivilege	2384	WerFault.exe

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

WerFault.exe

description	pid	process	target process
PID 3632 wrote to memory of 1728	3632	WerFault.exe	df17f6f93bf7a187f675f7246a862dac1eef92b6ecfb4d3c99aea573f3492f23.exe
PID 3632 wrote to memory of 1728	3632	WerFault.exe	df17f6f93bf7a187f675f7246a862dac1eef92b6ecfb4d3c99aea573f3492f23.exe

C:\Users\Admin\AppData\Local\Temp\df17f6f93bf7a187f675f7246a862dac1eef92b6ecfb4d3c99aea573f3492f23.exe
"C:\Users\Admin\AppData\Local\Temp\df17f6f93bf7a187f675f7246a862dac1eef92b6ecfb4d3c99aea573f3492f23.exe"
1⤵
PID:1728
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1728 -s 552
  2⤵
  - Program crash
  - Checks processor information in registry
  - Enumerates system info in registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2384

C:\Windows\system32\MusNotification.exe
C:\Windows\system32\MusNotification.exe
1⤵
- Checks processor information in registry
- Suspicious use of AdjustPrivilegeToken
PID:1996

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 1728 -ip 1728
1⤵
- Suspicious use of NtCreateProcessExOtherParentProcess
- Suspicious use of WriteProcessMemory
PID:3632

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/1728-130-0x000000000084E000-0x000000000085F000-memory.dmp

Filesize
68KB

Download
memory/1728-132-0x0000000000400000-0x0000000000560000-memory.dmp

Filesize
1.4MB

Download
memory/1728-131-0x0000000000700000-0x000000000071C000-memory.dmp

Filesize
112KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads