arkei | fdbb8d6ed0d4fcf8626da27bc3fbbac0951b1edcb8cac083e017c660ba2c5225

General

Target
bb63c0a03b35135d0d3eb1280fd5cada.exe
Size 204KB
Sample211120-lz4e7sfff7
SHA256 fdbb8d6ed0d4fcf8626da27bc3fbbac0951b1edcb8cac083e017c660ba2c5225
MD5 bb63c0a03b35135d0d3eb1280fd5cada
SHA1 08ef56f406a37616e75f3b87b691897ba9e91262
SHA512 403b6320edcf788fb998046f2f9b3b64c6acacbb8e1f6ae39b2fe36349463f7b71447b113138b1e42d1c00cce20aef23d888d57bb2c5956829ce6e799312e3fa
MD5 SHA1 SHA512

Score

10^/10

arkei default discovery spyware 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

Arkei Stealer Payload 2 IoCs

stealer

resource	yara_rule
behavioral2/memory/2620-119-0x0000000002180000-0x00000000021A1000-memory.dmp	family_arkei
behavioral2/memory/2620-120-0x0000000000400000-0x000000000043B000-memory.dmp	family_arkei

Downloads MZ/PE file

Loads dropped DLL 3 IoCs

pid	Process
2620	bb63c0a03b35135d0d3eb1280fd5cada.exe
2620	bb63c0a03b35135d0d3eb1280fd5cada.exe
2620	bb63c0a03b35135d0d3eb1280fd5cada.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	bb63c0a03b35135d0d3eb1280fd5cada.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	bb63c0a03b35135d0d3eb1280fd5cada.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
1088	timeout.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2620 wrote to memory of 396	2620	bb63c0a03b35135d0d3eb1280fd5cada.exe	71
PID 2620 wrote to memory of 396	2620	bb63c0a03b35135d0d3eb1280fd5cada.exe	71
PID 2620 wrote to memory of 396	2620	bb63c0a03b35135d0d3eb1280fd5cada.exe	71
PID 396 wrote to memory of 1088	396	cmd.exe	73
PID 396 wrote to memory of 1088	396	cmd.exe	73
PID 396 wrote to memory of 1088	396	cmd.exe	73

C:\Users\Admin\AppData\Local\Temp\bb63c0a03b35135d0d3eb1280fd5cada.exe
"C:\Users\Admin\AppData\Local\Temp\bb63c0a03b35135d0d3eb1280fd5cada.exe"
1⤵
- Loads dropped DLL
- Checks processor information in registry
- Suspicious use of WriteProcessMemory
PID:2620
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Users\Admin\AppData\Local\Temp\bb63c0a03b35135d0d3eb1280fd5cada.exe" & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:396
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 5
    3⤵
    - Delays execution with timeout.exe
    PID:1088

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/2620-119-0x0000000002180000-0x00000000021A1000-memory.dmp

Download

memory/2620-118-0x0000000000440000-0x00000000004EE000-memory.dmp

Download

memory/2620-120-0x0000000000400000-0x000000000043B000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads