arkei | 4017f2124bbff8830e52c96a36f07498e3ad0d8c46096279117c799bf72af9eb

General

Target

4017f2124bbff8830e52c96a36f07498e3ad0d8c46096279117c799bf72af9eb.exe
Size

321KB
MD5

e914291a04849d5beb4a43969155c486
SHA1

85ff3f7115cda99e31a21fddfed36197b4b673d5
SHA256

4017f2124bbff8830e52c96a36f07498e3ad0d8c46096279117c799bf72af9eb
SHA512

2450f07c8daeb908b36470ddec9b2b9025b6fd486da622ebfde621d43cecec874c8e88e8cfc5224fb0b0268e7aeec49f9011b63fdd51ece7fc17ecd5210175cd

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 1 IoCs

stealer

Processes:

resource	yara_rule
behavioral1/memory/2448-117-0x0000000000400000-0x0000000000560000-memory.dmp	family_arkei

Downloads MZ/PE file

Loads dropped DLL 3 IoCs

Processes:

4017f2124bbff8830e52c96a36f07498e3ad0d8c46096279117c799bf72af9eb.exe

pid	process
2448	4017f2124bbff8830e52c96a36f07498e3ad0d8c46096279117c799bf72af9eb.exe
2448	4017f2124bbff8830e52c96a36f07498e3ad0d8c46096279117c799bf72af9eb.exe
2448	4017f2124bbff8830e52c96a36f07498e3ad0d8c46096279117c799bf72af9eb.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:

4017f2124bbff8830e52c96a36f07498e3ad0d8c46096279117c799bf72af9eb.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	4017f2124bbff8830e52c96a36f07498e3ad0d8c46096279117c799bf72af9eb.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	4017f2124bbff8830e52c96a36f07498e3ad0d8c46096279117c799bf72af9eb.exe

Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

2748 timeout.exe

pid	process
2748	timeout.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

4017f2124bbff8830e52c96a36f07498e3ad0d8c46096279117c799bf72af9eb.execmd.exe

description	pid	process	target process
PID 2448 wrote to memory of 1396	2448	4017f2124bbff8830e52c96a36f07498e3ad0d8c46096279117c799bf72af9eb.exe	cmd.exe
PID 2448 wrote to memory of 1396	2448	4017f2124bbff8830e52c96a36f07498e3ad0d8c46096279117c799bf72af9eb.exe	cmd.exe
PID 2448 wrote to memory of 1396	2448	4017f2124bbff8830e52c96a36f07498e3ad0d8c46096279117c799bf72af9eb.exe	cmd.exe
PID 1396 wrote to memory of 2748	1396	cmd.exe	timeout.exe
PID 1396 wrote to memory of 2748	1396	cmd.exe	timeout.exe
PID 1396 wrote to memory of 2748	1396	cmd.exe	timeout.exe

C:\Users\Admin\AppData\Local\Temp\4017f2124bbff8830e52c96a36f07498e3ad0d8c46096279117c799bf72af9eb.exe
"C:\Users\Admin\AppData\Local\Temp\4017f2124bbff8830e52c96a36f07498e3ad0d8c46096279117c799bf72af9eb.exe"
1⤵
- Loads dropped DLL
- Checks processor information in registry
- Suspicious use of WriteProcessMemory
PID:2448
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Users\Admin\AppData\Local\Temp\4017f2124bbff8830e52c96a36f07498e3ad0d8c46096279117c799bf72af9eb.exe" & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1396
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 5
    3⤵
    - Delays execution with timeout.exe
    PID:2748

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

\ProgramData\mozglue.dll

MD5
8f73c08a9660691143661bf7332c3c27

SHA1
37fa65dd737c50fda710fdbde89e51374d0c204a

SHA256
3fe6b1c54b8cf28f571e0c5d6636b4069a8ab00b4f11dd842cfec00691d0c9cd

SHA512
0042ecf9b3571bb5eba2de893e8b2371df18f7c5a589f52ee66e4bfbaa15a5b8b7cc6a155792aaa8988528c27196896d5e82e1751c998bacea0d92395f66ad89

Download Submit
\ProgramData\nss3.dll

MD5
bfac4e3c5908856ba17d41edcd455a51

SHA1
8eec7e888767aa9e4cca8ff246eb2aacb9170428

SHA256
e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78

SHA512
2565bab776c4d732ffb1f9b415992a4c65b81bcd644a9a1df1333a269e322925fc1df4f76913463296efd7c88ef194c3056de2f1ca1357d7b5fe5ff0da877a66

Download Submit
\ProgramData\sqlite3.dll

MD5
e477a96c8f2b18d6b5c27bde49c990bf

SHA1
e980c9bf41330d1e5bd04556db4646a0210f7409

SHA256
16574f51785b0e2fc29c2c61477eb47bb39f714829999511dc8952b43ab17660

SHA512
335a86268e7c0e568b1c30981ec644e6cd332e66f96d2551b58a82515316693c1859d87b4f4b7310cf1ac386cee671580fdd999c3bcb23acf2c2282c01c8798c

Download Submit
memory/1396-121-0x0000000000000000-mapping.dmp

Download
memory/2448-117-0x0000000000400000-0x0000000000560000-memory.dmp

Filesize
1.4MB

Download
memory/2448-116-0x0000000000560000-0x000000000060E000-memory.dmp

Filesize
696KB

Download
memory/2748-122-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads