arkei | 22987954c310d538025035f6741edee6ef382388e3b92fc5fdc51deb7d2a735b

General

Target
22987954c310d538025035f6741edee6ef382388e3b92fc5fdc51deb7d2a735b.exe
Size 248KB
Sample220131-wmew7abcd3
SHA256 22987954c310d538025035f6741edee6ef382388e3b92fc5fdc51deb7d2a735b
MD5 142969f93eafec6fcaaa172bd8edeba3
SHA1 ecc4f6865ce61aa84f1f7494c565da2c891a4400
SHA512 6fa663490b22e578305253d454af2c7eb86e9928c121131e56a39ebc67d180bd01092ea4a99353c0dda84678569d7b682b0598aa8e1a696b8b78cdffcdc10a75
MD5 SHA1 SHA512

Score

10^/10

arkei default discovery spyware stealer

Malware Config

Extracted

Family

arkei

Botnet

Default

C2

http://coin-file-file-19.com/tratata.php

Signatures

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

Arkei Stealer Payload 2 IoCs

stealer

resource	yara_rule
behavioral1/memory/2384-116-0x0000000002180000-0x000000000219C000-memory.dmp	family_arkei
behavioral1/memory/2384-117-0x0000000000400000-0x0000000000445000-memory.dmp	family_arkei

Downloads MZ/PE file

Loads dropped DLL 3 IoCs

pid	Process
2384	22987954c310d538025035f6741edee6ef382388e3b92fc5fdc51deb7d2a735b.exe
2384	22987954c310d538025035f6741edee6ef382388e3b92fc5fdc51deb7d2a735b.exe
2384	22987954c310d538025035f6741edee6ef382388e3b92fc5fdc51deb7d2a735b.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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	22987954c310d538025035f6741edee6ef382388e3b92fc5fdc51deb7d2a735b.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	22987954c310d538025035f6741edee6ef382388e3b92fc5fdc51deb7d2a735b.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
3504	timeout.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2384 wrote to memory of 2780	2384	22987954c310d538025035f6741edee6ef382388e3b92fc5fdc51deb7d2a735b.exe	68
PID 2384 wrote to memory of 2780	2384	22987954c310d538025035f6741edee6ef382388e3b92fc5fdc51deb7d2a735b.exe	68
PID 2384 wrote to memory of 2780	2384	22987954c310d538025035f6741edee6ef382388e3b92fc5fdc51deb7d2a735b.exe	68
PID 2780 wrote to memory of 3504	2780	cmd.exe	70
PID 2780 wrote to memory of 3504	2780	cmd.exe	70
PID 2780 wrote to memory of 3504	2780	cmd.exe	70

C:\Users\Admin\AppData\Local\Temp\22987954c310d538025035f6741edee6ef382388e3b92fc5fdc51deb7d2a735b.exe
"C:\Users\Admin\AppData\Local\Temp\22987954c310d538025035f6741edee6ef382388e3b92fc5fdc51deb7d2a735b.exe"
1⤵
- Loads dropped DLL
- Checks processor information in registry
- Suspicious use of WriteProcessMemory
PID:2384
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Users\Admin\AppData\Local\Temp\22987954c310d538025035f6741edee6ef382388e3b92fc5fdc51deb7d2a735b.exe" & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2780
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 5
    3⤵
    - Delays execution with timeout.exe
    PID:3504

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/2384-115-0x00000000004B0000-0x000000000055E000-memory.dmp

Download

memory/2384-116-0x0000000002180000-0x000000000219C000-memory.dmp

Download

memory/2384-117-0x0000000000400000-0x0000000000445000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads