arkei | 10afe233525aaf99064e4e444f11a8fc01f8b9f508e4f123fd76b314a6d360f9

Analysis

max time kernel
145s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20220721-en
resource tags

arch:x64arch:x86image:win10v2004-20220721-enlocale:en-usos:windows10-2004-x64system
submitted
03-08-2022 04:07

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

10afe233525aaf99064e4e444f11a8fc01f8b9f508e4f123fd76b314a6d360f9.exe
Size

171KB
MD5

10f0d3a64949a6e15a9c389059a8f379
SHA1

0f6e3442c67d6688fae5f51b4f60b78cd05f30df
SHA256

10afe233525aaf99064e4e444f11a8fc01f8b9f508e4f123fd76b314a6d360f9
SHA512

40b19007433518aba9c19c9fdae314112a73f50ab0dcf9356a1887b44bcdbadf767be1eb0f2d4c1ba249c8791473c55e0d9f12daaed9356bf560e14d3e473c60

Score

10^/10

arkei default discovery spyware stealer

Malware Config

Extracted

Family

arkei

Botnet

Default

Signatures

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

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

Processes:

10afe233525aaf99064e4e444f11a8fc01f8b9f508e4f123fd76b314a6d360f9.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2372564722-193526734-2636556182-1000\Control Panel\International\Geo\Nation	10afe233525aaf99064e4e444f11a8fc01f8b9f508e4f123fd76b314a6d360f9.exe

Loads dropped DLL 2 IoCs

Processes:

10afe233525aaf99064e4e444f11a8fc01f8b9f508e4f123fd76b314a6d360f9.exe

pid	process
1912	10afe233525aaf99064e4e444f11a8fc01f8b9f508e4f123fd76b314a6d360f9.exe
1912	10afe233525aaf99064e4e444f11a8fc01f8b9f508e4f123fd76b314a6d360f9.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

Processes:

10afe233525aaf99064e4e444f11a8fc01f8b9f508e4f123fd76b314a6d360f9.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	10afe233525aaf99064e4e444f11a8fc01f8b9f508e4f123fd76b314a6d360f9.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	10afe233525aaf99064e4e444f11a8fc01f8b9f508e4f123fd76b314a6d360f9.exe

Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

4720 timeout.exe

pid	process
4720	timeout.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

10afe233525aaf99064e4e444f11a8fc01f8b9f508e4f123fd76b314a6d360f9.execmd.exe

description	pid	process	target process
PID 1912 wrote to memory of 612	1912	10afe233525aaf99064e4e444f11a8fc01f8b9f508e4f123fd76b314a6d360f9.exe	cmd.exe
PID 1912 wrote to memory of 612	1912	10afe233525aaf99064e4e444f11a8fc01f8b9f508e4f123fd76b314a6d360f9.exe	cmd.exe
PID 1912 wrote to memory of 612	1912	10afe233525aaf99064e4e444f11a8fc01f8b9f508e4f123fd76b314a6d360f9.exe	cmd.exe
PID 612 wrote to memory of 4720	612	cmd.exe	timeout.exe
PID 612 wrote to memory of 4720	612	cmd.exe	timeout.exe
PID 612 wrote to memory of 4720	612	cmd.exe	timeout.exe

C:\Users\Admin\AppData\Local\Temp\10afe233525aaf99064e4e444f11a8fc01f8b9f508e4f123fd76b314a6d360f9.exe
"C:\Users\Admin\AppData\Local\Temp\10afe233525aaf99064e4e444f11a8fc01f8b9f508e4f123fd76b314a6d360f9.exe"
1⤵
- Checks computer location settings
- Loads dropped DLL
- Checks processor information in registry
- Suspicious use of WriteProcessMemory
PID:1912
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Users\Admin\AppData\Local\Temp\10afe233525aaf99064e4e444f11a8fc01f8b9f508e4f123fd76b314a6d360f9.exe" & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:612
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 5
    3⤵
    - Delays execution with timeout.exe
    PID:4720

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

T1081

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\ProgramData\mozglue.dll

Filesize
133KB

MD5
8f73c08a9660691143661bf7332c3c27

SHA1
37fa65dd737c50fda710fdbde89e51374d0c204a

SHA256
3fe6b1c54b8cf28f571e0c5d6636b4069a8ab00b4f11dd842cfec00691d0c9cd

SHA512
0042ecf9b3571bb5eba2de893e8b2371df18f7c5a589f52ee66e4bfbaa15a5b8b7cc6a155792aaa8988528c27196896d5e82e1751c998bacea0d92395f66ad89

Download Submit
C:\ProgramData\nss3.dll

Filesize
1.2MB

MD5
bfac4e3c5908856ba17d41edcd455a51

SHA1
8eec7e888767aa9e4cca8ff246eb2aacb9170428

SHA256
e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78

SHA512
2565bab776c4d732ffb1f9b415992a4c65b81bcd644a9a1df1333a269e322925fc1df4f76913463296efd7c88ef194c3056de2f1ca1357d7b5fe5ff0da877a66

Download Submit
memory/612-152-0x0000000000000000-mapping.dmp

Download
memory/1912-130-0x0000000000400000-0x000000000043D000-memory.dmp

Filesize
244KB

Download
memory/1912-131-0x0000000060900000-0x0000000060992000-memory.dmp

Filesize
584KB

Download
memory/1912-153-0x0000000000400000-0x000000000043D000-memory.dmp

Filesize
244KB

Download
memory/4720-154-0x0000000000000000-mapping.dmp

Download