arkei | 918e0831ad0dbda80d659c0f6208ae67bcc45f6f5d542599bc3a8a5c63169e6f

General

Target
e23ee3e23547bd5224cfdb44153981a9.exe
Size 300KB
Sample220108-te3beadeep
SHA256 918e0831ad0dbda80d659c0f6208ae67bcc45f6f5d542599bc3a8a5c63169e6f
MD5 e23ee3e23547bd5224cfdb44153981a9
SHA1 e79a7056ac95b119da7047f217b805cae2e4c20a
SHA512 77847b306a02b73cd6a0077234d96526605b62540e903de069584ef60837e764617307138745e0f8fa8cc50fcf12889f5302d9421266a8dc0a7b077c22c5f09d
MD5 SHA1 SHA512

Score

10^/10

arkei discovery spyware stealer

Malware Config

Signatures

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

Arkei Stealer Payload 2 IoCs

stealer

resource	yara_rule
behavioral1/memory/1592-55-0x0000000000240000-0x000000000025C000-memory.dmp	family_arkei
behavioral1/memory/1592-56-0x0000000000400000-0x0000000002B82000-memory.dmp	family_arkei

Downloads MZ/PE file

Deletes itself 1 IoCs

pid	Process
1812	cmd.exe

Loads dropped DLL 5 IoCs

pid	Process
1592	e23ee3e23547bd5224cfdb44153981a9.exe
1592	e23ee3e23547bd5224cfdb44153981a9.exe
1592	e23ee3e23547bd5224cfdb44153981a9.exe
1592	e23ee3e23547bd5224cfdb44153981a9.exe
1592	e23ee3e23547bd5224cfdb44153981a9.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 opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	e23ee3e23547bd5224cfdb44153981a9.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	e23ee3e23547bd5224cfdb44153981a9.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
1320	timeout.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1592 wrote to memory of 1812	1592	e23ee3e23547bd5224cfdb44153981a9.exe	29
PID 1592 wrote to memory of 1812	1592	e23ee3e23547bd5224cfdb44153981a9.exe	29
PID 1592 wrote to memory of 1812	1592	e23ee3e23547bd5224cfdb44153981a9.exe	29
PID 1592 wrote to memory of 1812	1592	e23ee3e23547bd5224cfdb44153981a9.exe	29
PID 1812 wrote to memory of 1320	1812	cmd.exe	31
PID 1812 wrote to memory of 1320	1812	cmd.exe	31
PID 1812 wrote to memory of 1320	1812	cmd.exe	31
PID 1812 wrote to memory of 1320	1812	cmd.exe	31

C:\Users\Admin\AppData\Local\Temp\e23ee3e23547bd5224cfdb44153981a9.exe
"C:\Users\Admin\AppData\Local\Temp\e23ee3e23547bd5224cfdb44153981a9.exe"
1⤵
- Loads dropped DLL
- Checks processor information in registry
- Suspicious use of WriteProcessMemory
PID:1592
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Users\Admin\AppData\Local\Temp\e23ee3e23547bd5224cfdb44153981a9.exe" & exit
  2⤵
  - Deletes itself
  - Suspicious use of WriteProcessMemory
  PID:1812
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 5
    3⤵
    - Delays execution with timeout.exe
    PID:1320

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

2

T1081

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Data from Local System

2

T1005

Command and Control

Exfiltration

Impact

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Downloads

memory/1592-55-0x0000000000240000-0x000000000025C000-memory.dmp

Download

memory/1592-54-0x0000000000220000-0x0000000000231000-memory.dmp

Download

memory/1592-56-0x0000000000400000-0x0000000002B82000-memory.dmp

Download

memory/1592-57-0x0000000076151000-0x0000000076153000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads