arkei | 5deaeca7e2a9226af61335b4e049b1ab337b610324a7a51ec4cc92326730aa9b

General

Target
5deaeca7e2a9226af61335b4e049b1ab337b610324a7a51ec4cc92326730aa9b.exe
Size 334KB
Sample220117-q2lqdsager
SHA256 5deaeca7e2a9226af61335b4e049b1ab337b610324a7a51ec4cc92326730aa9b
MD5 4e45791094886e414c3592fe187f844f
SHA1 3465e47720e9817b63d61173a42196798bd3c222
SHA512 5ec47fbc743bbb4c14e70554601c3f27921916f1bbabc6359ca8b0dd949955bb38ebb01d12a88873974a8a6237ed99e19b52ebf9aa63283802af42f94d56fddc
MD5 SHA1 SHA512

Score

10^/10

arkei homesteadr discovery spyware stealer

Malware Config

Extracted

Family

arkei

Botnet

homesteadr

C2

http://homesteadr.link/ggate.php

Signatures

Arkei
Arkei is an infostealer written in C++.
stealer arkei

Suspicious use of NtCreateProcessExOtherParentProcess 1 IoCs

description	pid	Process	procid_target
PID 3536 created 2528	3536	WerFault.exe	51

Arkei Stealer Payload 2 IoCs

stealer

resource	yara_rule
behavioral1/memory/2528-131-0x0000000000870000-0x000000000088C000-memory.dmp	family_arkei
behavioral1/memory/2528-132-0x0000000000400000-0x00000000005DB000-memory.dmp	family_arkei

Downloads MZ/PE file

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-790714498-1549421491-1643397139-1000\Control Panel\International\Geo\Nation	5deaeca7e2a9226af61335b4e049b1ab337b610324a7a51ec4cc92326730aa9b.exe

Loads dropped DLL 3 IoCs

pid	Process
2528	5deaeca7e2a9226af61335b4e049b1ab337b610324a7a51ec4cc92326730aa9b.exe
2528	5deaeca7e2a9226af61335b4e049b1ab337b610324a7a51ec4cc92326730aa9b.exe
2528	5deaeca7e2a9226af61335b4e049b1ab337b610324a7a51ec4cc92326730aa9b.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

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2084	2528	WerFault.exe	51

Checks processor information in registry 2 TTPs 7 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	MusNotification.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	MusNotification.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	5deaeca7e2a9226af61335b4e049b1ab337b610324a7a51ec4cc92326730aa9b.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	5deaeca7e2a9226af61335b4e049b1ab337b610324a7a51ec4cc92326730aa9b.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
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	WerFault.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
3060	timeout.exe

Enumerates system info in registry 2 TTPs 2 IoCs

Query Registry

T1012

System Information Discovery

T1082

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

pid	Process
2084	WerFault.exe
2084	WerFault.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeShutdownPrivilege	1896	MusNotification.exe
Token: SeCreatePagefilePrivilege	1896	MusNotification.exe
Token: SeRestorePrivilege	2084	WerFault.exe
Token: SeBackupPrivilege	2084	WerFault.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2528 wrote to memory of 2860	2528	5deaeca7e2a9226af61335b4e049b1ab337b610324a7a51ec4cc92326730aa9b.exe	58
PID 2528 wrote to memory of 2860	2528	5deaeca7e2a9226af61335b4e049b1ab337b610324a7a51ec4cc92326730aa9b.exe	58
PID 2528 wrote to memory of 2860	2528	5deaeca7e2a9226af61335b4e049b1ab337b610324a7a51ec4cc92326730aa9b.exe	58
PID 2860 wrote to memory of 3060	2860	cmd.exe	61
PID 2860 wrote to memory of 3060	2860	cmd.exe	61
PID 2860 wrote to memory of 3060	2860	cmd.exe	61
PID 3536 wrote to memory of 2528	3536	WerFault.exe	51
PID 3536 wrote to memory of 2528	3536	WerFault.exe	51

C:\Users\Admin\AppData\Local\Temp\5deaeca7e2a9226af61335b4e049b1ab337b610324a7a51ec4cc92326730aa9b.exe
"C:\Users\Admin\AppData\Local\Temp\5deaeca7e2a9226af61335b4e049b1ab337b610324a7a51ec4cc92326730aa9b.exe"
1⤵
- Checks computer location settings
- Loads dropped DLL
- Checks processor information in registry
- Suspicious use of WriteProcessMemory
PID:2528
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Users\Admin\AppData\Local\Temp\5deaeca7e2a9226af61335b4e049b1ab337b610324a7a51ec4cc92326730aa9b.exe" & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2860
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 5
    3⤵
    - Delays execution with timeout.exe
    PID:3060
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2528 -s 600
  2⤵
  - Program crash
  - Checks processor information in registry
  - Enumerates system info in registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2084

C:\Windows\system32\MusNotification.exe
C:\Windows\system32\MusNotification.exe
1⤵
- Checks processor information in registry
- Suspicious use of AdjustPrivilegeToken
PID:1896

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 2528 -ip 2528
1⤵
- Suspicious use of NtCreateProcessExOtherParentProcess
- Suspicious use of WriteProcessMemory
PID:3536

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

2

T1081

Discovery

Query Registry

4

T1012

System Information Discovery

4

T1082

Lateral Movement

Collection

Data from Local System

2

T1005

Command and Control

Exfiltration

Impact

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Downloads

memory/2528-130-0x00000000008A8000-0x00000000008B9000-memory.dmp

Download

memory/2528-131-0x0000000000870000-0x000000000088C000-memory.dmp

Download

memory/2528-132-0x0000000000400000-0x00000000005DB000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads