arkei | e069ce2651bc7095e62c6a919fee34c696eb76995b5ef58d5311d89218847fd0

General

Target
b0bbaf3e1970109f616a5681c4db46a5.exe
Size 312KB
Sample220201-ve5bfaaaf3
SHA256 e069ce2651bc7095e62c6a919fee34c696eb76995b5ef58d5311d89218847fd0
MD5 b0bbaf3e1970109f616a5681c4db46a5
SHA1 4409a2fd3c5009f48d109f33e9a9d55e8b7ac991
SHA512 85bea639e018813494d9d9cddc6ee4aa22019266563efaea707f4d86abf5557abc3f63a1c6480884d705e0cc4958ee568207d7e1623d6b94048eaaecd52cbd71
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/964-55-0x00000000002B0000-0x00000000002CC000-memory.dmp	family_arkei
behavioral1/memory/964-56-0x0000000000400000-0x0000000000477000-memory.dmp	family_arkei

Downloads MZ/PE file

Deletes itself 1 IoCs

pid	Process
1620	cmd.exe

Loads dropped DLL 5 IoCs

pid	Process
964	b0bbaf3e1970109f616a5681c4db46a5.exe
964	b0bbaf3e1970109f616a5681c4db46a5.exe
964	b0bbaf3e1970109f616a5681c4db46a5.exe
964	b0bbaf3e1970109f616a5681c4db46a5.exe
964	b0bbaf3e1970109f616a5681c4db46a5.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	b0bbaf3e1970109f616a5681c4db46a5.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	b0bbaf3e1970109f616a5681c4db46a5.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
1972	timeout.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 964 wrote to memory of 1620	964	b0bbaf3e1970109f616a5681c4db46a5.exe	29
PID 964 wrote to memory of 1620	964	b0bbaf3e1970109f616a5681c4db46a5.exe	29
PID 964 wrote to memory of 1620	964	b0bbaf3e1970109f616a5681c4db46a5.exe	29
PID 964 wrote to memory of 1620	964	b0bbaf3e1970109f616a5681c4db46a5.exe	29
PID 1620 wrote to memory of 1972	1620	cmd.exe	31
PID 1620 wrote to memory of 1972	1620	cmd.exe	31
PID 1620 wrote to memory of 1972	1620	cmd.exe	31
PID 1620 wrote to memory of 1972	1620	cmd.exe	31

C:\Users\Admin\AppData\Local\Temp\b0bbaf3e1970109f616a5681c4db46a5.exe
"C:\Users\Admin\AppData\Local\Temp\b0bbaf3e1970109f616a5681c4db46a5.exe"
1⤵
- Loads dropped DLL
- Checks processor information in registry
- Suspicious use of WriteProcessMemory
PID:964
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Users\Admin\AppData\Local\Temp\b0bbaf3e1970109f616a5681c4db46a5.exe" & exit
  2⤵
  - Deletes itself
  - Suspicious use of WriteProcessMemory
  PID:1620
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 5
    3⤵
    - Delays execution with timeout.exe
    PID:1972

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

Replay Monitor

Loading Replay Monitor...

Downloads

memory/964-54-0x00000000004F0000-0x000000000051E000-memory.dmp

Download

memory/964-55-0x00000000002B0000-0x00000000002CC000-memory.dmp

Download

memory/964-56-0x0000000000400000-0x0000000000477000-memory.dmp

Download

memory/964-57-0x0000000075341000-0x0000000075343000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads