arkei | 88adacd8b0860bd1eee264d27dd7849b85ca64befd9183465157a39cad29759f

General

Target
88adacd8b0860bd1eee264d27dd7849b85ca64befd9183465157a39cad29759f.exe
Size 260KB
Sample220202-zjs67abfa4
SHA256 88adacd8b0860bd1eee264d27dd7849b85ca64befd9183465157a39cad29759f
MD5 dcb773e3186b3da25e28c6cbcaa2632c
SHA1 b0f71b019369cd4a4ee7f6e52a70308eec068f6f
SHA512 3092227e6482bd2af7db400e817bfce1b47d99fdf927f7d8b4133854870166f405c6e216e612bdcbd7fcb48c5998e93019f327809c8094593e810dd2c31cafe2
MD5 SHA1 SHA512

Score

10^/10

arkei default discovery spyware stealer

Malware Config

Extracted

Family

arkei

Botnet

Default

C2

http://tuntutul.link/gate1.php

Signatures

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

Arkei Stealer Payload 2 IoCs

stealer

resource	yara_rule
behavioral1/memory/4104-115-0x0000000002DC0000-0x0000000002DDC000-memory.dmp	family_arkei
behavioral1/memory/4104-116-0x0000000000400000-0x0000000002C26000-memory.dmp	family_arkei

Downloads MZ/PE file

Loads dropped DLL 3 IoCs

pid	Process
4104	88adacd8b0860bd1eee264d27dd7849b85ca64befd9183465157a39cad29759f.exe
4104	88adacd8b0860bd1eee264d27dd7849b85ca64befd9183465157a39cad29759f.exe
4104	88adacd8b0860bd1eee264d27dd7849b85ca64befd9183465157a39cad29759f.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	88adacd8b0860bd1eee264d27dd7849b85ca64befd9183465157a39cad29759f.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	88adacd8b0860bd1eee264d27dd7849b85ca64befd9183465157a39cad29759f.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
3584	timeout.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4104 wrote to memory of 3472	4104	88adacd8b0860bd1eee264d27dd7849b85ca64befd9183465157a39cad29759f.exe	69
PID 4104 wrote to memory of 3472	4104	88adacd8b0860bd1eee264d27dd7849b85ca64befd9183465157a39cad29759f.exe	69
PID 4104 wrote to memory of 3472	4104	88adacd8b0860bd1eee264d27dd7849b85ca64befd9183465157a39cad29759f.exe	69
PID 3472 wrote to memory of 3584	3472	cmd.exe	71
PID 3472 wrote to memory of 3584	3472	cmd.exe	71
PID 3472 wrote to memory of 3584	3472	cmd.exe	71

C:\Users\Admin\AppData\Local\Temp\88adacd8b0860bd1eee264d27dd7849b85ca64befd9183465157a39cad29759f.exe
"C:\Users\Admin\AppData\Local\Temp\88adacd8b0860bd1eee264d27dd7849b85ca64befd9183465157a39cad29759f.exe"
1⤵
- Loads dropped DLL
- Checks processor information in registry
- Suspicious use of WriteProcessMemory
PID:4104
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Users\Admin\AppData\Local\Temp\88adacd8b0860bd1eee264d27dd7849b85ca64befd9183465157a39cad29759f.exe" & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3472
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 5
    3⤵
    - Delays execution with timeout.exe
    PID:3584

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/4104-114-0x0000000002DA0000-0x0000000002DB1000-memory.dmp

Download

memory/4104-115-0x0000000002DC0000-0x0000000002DDC000-memory.dmp

Download

memory/4104-116-0x0000000000400000-0x0000000002C26000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads