arkei | 111dd17966a5f7058eb1cfc468c1d062602437a69694aa05eff97d121d611408

Analysis

max time kernel
55s
max time network
146s
platform
windows10_x64
resource
win10v20210408
submitted
30-08-2021 21:51

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General

Target

eufive_20210830-223756.exe
Size

264KB
MD5

134fac2ca9c3723cd6107a69f7f06c9e
SHA1

dd81965431606b8e940bb4a5f8f83a9b060d7f10
SHA256

111dd17966a5f7058eb1cfc468c1d062602437a69694aa05eff97d121d611408
SHA512

3d170c5cfaae1ad3f0288afae0a45ce43b852196c74b779618ccaa6dd53009ca3342aa867c6e44164c34b295698b9bf096b640cceeb183e82b1e6cb4f379ada3

Score

10^/10

arkei spyware stealer

Malware Config

Signatures

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

Suspicious use of NtCreateProcessExOtherParentProcess 1 IoCs

description	pid	Process	procid_target
PID 920 created 572	920	WerFault.exe	67

Arkei Stealer Payload 2 IoCs

stealer

resource	yara_rule
behavioral2/memory/572-115-0x00000000001C0000-0x00000000001D9000-memory.dmp	family_arkei
behavioral2/memory/572-116-0x0000000000400000-0x00000000023AC000-memory.dmp	family_arkei

Downloads MZ/PE file

Loads dropped DLL 3 IoCs

pid	Process
572	eufive_20210830-223756.exe
572	eufive_20210830-223756.exe
572	eufive_20210830-223756.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

Program crash 1 IoCs

pid	pid_target	Process	procid_target
920	572	WerFault.exe	67

Suspicious behavior: EnumeratesProcesses 14 IoCs

pid	Process
920	WerFault.exe
920	WerFault.exe
920	WerFault.exe
920	WerFault.exe
920	WerFault.exe
920	WerFault.exe
920	WerFault.exe
920	WerFault.exe
920	WerFault.exe
920	WerFault.exe
920	WerFault.exe
920	WerFault.exe
920	WerFault.exe
920	WerFault.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeRestorePrivilege	920	WerFault.exe
Token: SeBackupPrivilege	920	WerFault.exe
Token: SeDebugPrivilege	920	WerFault.exe

C:\Users\Admin\AppData\Local\Temp\eufive_20210830-223756.exe
"C:\Users\Admin\AppData\Local\Temp\eufive_20210830-223756.exe"
1⤵
- Loads dropped DLL
PID:572
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 572 -s 1108
  2⤵
  - Suspicious use of NtCreateProcessExOtherParentProcess
  - Program crash
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:920

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

T1081

Discovery

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/572-115-0x00000000001C0000-0x00000000001D9000-memory.dmp

Filesize
100KB

Download
memory/572-116-0x0000000000400000-0x00000000023AC000-memory.dmp

Filesize
31.7MB

Download