arkei | 0a316af9f714ce039ee7a41054ab2e172025375aec312b1ed5b89cb8746deaa6

General

Target

0a316af9f714ce039ee7a41054ab2e172025375aec312b1ed5b89cb8746deaa6.exe
Size

326KB
MD5

340cfb60356ea89aa64d67085131b08d
SHA1

f7fb04e8e02b81982b9634b7a57c631e5ed97e2c
SHA256

0a316af9f714ce039ee7a41054ab2e172025375aec312b1ed5b89cb8746deaa6
SHA512

68e645ffd97ce21ffea12dc5df3088f9663f8c0c5fedb7e36829dc59de6a50e5755220b6d12826f03663cc4cacf82c0d9454fa5433c46de1c32321673ede3657

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 1136 created 1724 1136 WerFault.exe 0a316af9f714ce039ee7a41054ab2e172025375aec312b1ed5b89cb8746deaa6.exe

description	pid	process	target process
PID 1136 created 1724	1136	WerFault.exe	0a316af9f714ce039ee7a41054ab2e172025375aec312b1ed5b89cb8746deaa6.exe

Arkei Stealer Payload 2 IoCs

stealer

Processes:

resource	yara_rule
behavioral1/memory/1724-131-0x00000000001E0000-0x00000000001FC000-memory.dmp	family_arkei
behavioral1/memory/1724-132-0x0000000000400000-0x000000000045A000-memory.dmp	family_arkei

Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

3596 1724 WerFault.exe 0a316af9f714ce039ee7a41054ab2e172025375aec312b1ed5b89cb8746deaa6.exe

pid	pid_target	process	target process
3596	1724	WerFault.exe	0a316af9f714ce039ee7a41054ab2e172025375aec312b1ed5b89cb8746deaa6.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 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
Key opened	\Registry\Machine\HARDWARE\DESCRIPTION\System\CentralProcessor\0	MusNotification.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	MusNotification.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

3596 WerFault.exe
3596 WerFault.exe

pid	process
3596	WerFault.exe
3596	WerFault.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

WerFault.exeMusNotification.exe

description	pid	process
Token: SeRestorePrivilege	3596	WerFault.exe
Token: SeBackupPrivilege	3596	WerFault.exe
Token: SeShutdownPrivilege	2028	MusNotification.exe
Token: SeCreatePagefilePrivilege	2028	MusNotification.exe

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

WerFault.exe

description	pid	process	target process
PID 1136 wrote to memory of 1724	1136	WerFault.exe	0a316af9f714ce039ee7a41054ab2e172025375aec312b1ed5b89cb8746deaa6.exe
PID 1136 wrote to memory of 1724	1136	WerFault.exe	0a316af9f714ce039ee7a41054ab2e172025375aec312b1ed5b89cb8746deaa6.exe

C:\Users\Admin\AppData\Local\Temp\0a316af9f714ce039ee7a41054ab2e172025375aec312b1ed5b89cb8746deaa6.exe
"C:\Users\Admin\AppData\Local\Temp\0a316af9f714ce039ee7a41054ab2e172025375aec312b1ed5b89cb8746deaa6.exe"
1⤵
PID:1724
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1724 -s 548
  2⤵
  - Program crash
  - Checks processor information in registry
  - Enumerates system info in registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3596

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 1724 -ip 1724
1⤵
- Suspicious use of NtCreateProcessExOtherParentProcess
- Suspicious use of WriteProcessMemory
PID:1136

C:\Windows\system32\MusNotification.exe
C:\Windows\system32\MusNotification.exe
1⤵
- Checks processor information in registry
- Suspicious use of AdjustPrivilegeToken
PID:2028

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/1724-131-0x00000000001E0000-0x00000000001FC000-memory.dmp

Filesize
112KB

Download
memory/1724-130-0x00000000001C0000-0x00000000001D1000-memory.dmp

Filesize
68KB

Download
memory/1724-132-0x0000000000400000-0x000000000045A000-memory.dmp

Filesize
360KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads