Malware Analysis Report

2025-06-16 05:11

Sample ID 220419-jd367sacgj
Target a2c6f733cee76e07ef2fe055e20bafcf443c5f22a2b97bf92cc84e608cc53d58
SHA256 a2c6f733cee76e07ef2fe055e20bafcf443c5f22a2b97bf92cc84e608cc53d58
Tags
arkei default discovery spyware stealer
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V6

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

a2c6f733cee76e07ef2fe055e20bafcf443c5f22a2b97bf92cc84e608cc53d58

Threat Level: Known bad

The file a2c6f733cee76e07ef2fe055e20bafcf443c5f22a2b97bf92cc84e608cc53d58 was found to be: Known bad.

Malicious Activity Summary

arkei default discovery spyware stealer

Arkei

Deletes itself

Reads user/profile data of web browsers

Checks computer location settings

Loads dropped DLL

Accesses cryptocurrency files/wallets, possible credential harvesting

Checks installed software on the system

Suspicious use of SetThreadContext

Enumerates physical storage devices

Suspicious use of WriteProcessMemory

Checks processor information in registry

Delays execution with timeout.exe

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2022-04-19 07:34

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2022-04-19 07:34

Reported

2022-04-19 07:37

Platform

win7-20220414-en

Max time kernel

120s

Max time network

119s

Command Line

"C:\Users\Admin\AppData\Local\Temp\a2c6f733cee76e07ef2fe055e20bafcf443c5f22a2b97bf92cc84e608cc53d58.exe"

Signatures

Arkei

stealer arkei

Deletes itself

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\cmd.exe N/A

Reads user/profile data of web browsers

spyware stealer

Accesses cryptocurrency files/wallets, possible credential harvesting

spyware

Checks installed software on the system

discovery

Enumerates physical storage devices

Checks processor information in registry

Description Indicator Process Target
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Users\Admin\AppData\Local\Temp\a2c6f733cee76e07ef2fe055e20bafcf443c5f22a2b97bf92cc84e608cc53d58.exe N/A
Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 C:\Users\Admin\AppData\Local\Temp\a2c6f733cee76e07ef2fe055e20bafcf443c5f22a2b97bf92cc84e608cc53d58.exe N/A

Delays execution with timeout.exe

evasion
Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\timeout.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 388 wrote to memory of 556 N/A C:\Users\Admin\AppData\Local\Temp\a2c6f733cee76e07ef2fe055e20bafcf443c5f22a2b97bf92cc84e608cc53d58.exe C:\Users\Admin\AppData\Local\Temp\a2c6f733cee76e07ef2fe055e20bafcf443c5f22a2b97bf92cc84e608cc53d58.exe
PID 388 wrote to memory of 556 N/A C:\Users\Admin\AppData\Local\Temp\a2c6f733cee76e07ef2fe055e20bafcf443c5f22a2b97bf92cc84e608cc53d58.exe C:\Users\Admin\AppData\Local\Temp\a2c6f733cee76e07ef2fe055e20bafcf443c5f22a2b97bf92cc84e608cc53d58.exe
PID 388 wrote to memory of 556 N/A C:\Users\Admin\AppData\Local\Temp\a2c6f733cee76e07ef2fe055e20bafcf443c5f22a2b97bf92cc84e608cc53d58.exe C:\Users\Admin\AppData\Local\Temp\a2c6f733cee76e07ef2fe055e20bafcf443c5f22a2b97bf92cc84e608cc53d58.exe
PID 388 wrote to memory of 556 N/A C:\Users\Admin\AppData\Local\Temp\a2c6f733cee76e07ef2fe055e20bafcf443c5f22a2b97bf92cc84e608cc53d58.exe C:\Users\Admin\AppData\Local\Temp\a2c6f733cee76e07ef2fe055e20bafcf443c5f22a2b97bf92cc84e608cc53d58.exe
PID 388 wrote to memory of 556 N/A C:\Users\Admin\AppData\Local\Temp\a2c6f733cee76e07ef2fe055e20bafcf443c5f22a2b97bf92cc84e608cc53d58.exe C:\Users\Admin\AppData\Local\Temp\a2c6f733cee76e07ef2fe055e20bafcf443c5f22a2b97bf92cc84e608cc53d58.exe
PID 388 wrote to memory of 556 N/A C:\Users\Admin\AppData\Local\Temp\a2c6f733cee76e07ef2fe055e20bafcf443c5f22a2b97bf92cc84e608cc53d58.exe C:\Users\Admin\AppData\Local\Temp\a2c6f733cee76e07ef2fe055e20bafcf443c5f22a2b97bf92cc84e608cc53d58.exe
PID 388 wrote to memory of 556 N/A C:\Users\Admin\AppData\Local\Temp\a2c6f733cee76e07ef2fe055e20bafcf443c5f22a2b97bf92cc84e608cc53d58.exe C:\Users\Admin\AppData\Local\Temp\a2c6f733cee76e07ef2fe055e20bafcf443c5f22a2b97bf92cc84e608cc53d58.exe
PID 388 wrote to memory of 556 N/A C:\Users\Admin\AppData\Local\Temp\a2c6f733cee76e07ef2fe055e20bafcf443c5f22a2b97bf92cc84e608cc53d58.exe C:\Users\Admin\AppData\Local\Temp\a2c6f733cee76e07ef2fe055e20bafcf443c5f22a2b97bf92cc84e608cc53d58.exe
PID 388 wrote to memory of 556 N/A C:\Users\Admin\AppData\Local\Temp\a2c6f733cee76e07ef2fe055e20bafcf443c5f22a2b97bf92cc84e608cc53d58.exe C:\Users\Admin\AppData\Local\Temp\a2c6f733cee76e07ef2fe055e20bafcf443c5f22a2b97bf92cc84e608cc53d58.exe
PID 388 wrote to memory of 556 N/A C:\Users\Admin\AppData\Local\Temp\a2c6f733cee76e07ef2fe055e20bafcf443c5f22a2b97bf92cc84e608cc53d58.exe C:\Users\Admin\AppData\Local\Temp\a2c6f733cee76e07ef2fe055e20bafcf443c5f22a2b97bf92cc84e608cc53d58.exe
PID 556 wrote to memory of 524 N/A C:\Users\Admin\AppData\Local\Temp\a2c6f733cee76e07ef2fe055e20bafcf443c5f22a2b97bf92cc84e608cc53d58.exe C:\Windows\SysWOW64\cmd.exe
PID 556 wrote to memory of 524 N/A C:\Users\Admin\AppData\Local\Temp\a2c6f733cee76e07ef2fe055e20bafcf443c5f22a2b97bf92cc84e608cc53d58.exe C:\Windows\SysWOW64\cmd.exe
PID 556 wrote to memory of 524 N/A C:\Users\Admin\AppData\Local\Temp\a2c6f733cee76e07ef2fe055e20bafcf443c5f22a2b97bf92cc84e608cc53d58.exe C:\Windows\SysWOW64\cmd.exe
PID 556 wrote to memory of 524 N/A C:\Users\Admin\AppData\Local\Temp\a2c6f733cee76e07ef2fe055e20bafcf443c5f22a2b97bf92cc84e608cc53d58.exe C:\Windows\SysWOW64\cmd.exe
PID 524 wrote to memory of 1804 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 524 wrote to memory of 1804 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 524 wrote to memory of 1804 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 524 wrote to memory of 1804 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe

Processes

C:\Users\Admin\AppData\Local\Temp\a2c6f733cee76e07ef2fe055e20bafcf443c5f22a2b97bf92cc84e608cc53d58.exe

"C:\Users\Admin\AppData\Local\Temp\a2c6f733cee76e07ef2fe055e20bafcf443c5f22a2b97bf92cc84e608cc53d58.exe"

C:\Users\Admin\AppData\Local\Temp\a2c6f733cee76e07ef2fe055e20bafcf443c5f22a2b97bf92cc84e608cc53d58.exe

"C:\Users\Admin\AppData\Local\Temp\a2c6f733cee76e07ef2fe055e20bafcf443c5f22a2b97bf92cc84e608cc53d58.exe"

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Users\Admin\AppData\Local\Temp\a2c6f733cee76e07ef2fe055e20bafcf443c5f22a2b97bf92cc84e608cc53d58.exe" & exit

C:\Windows\SysWOW64\timeout.exe

timeout /t 5

Network

Country Destination Domain Proto
US 8.8.8.8:53 jsdkci.link udp
RU 45.8.124.64:80 jsdkci.link tcp
RU 45.8.124.64:80 jsdkci.link tcp
RU 45.8.124.64:80 jsdkci.link tcp
RU 45.8.124.64:80 jsdkci.link tcp
RU 45.8.124.64:80 jsdkci.link tcp

Files

memory/556-54-0x0000000000400000-0x000000000043C000-memory.dmp

memory/556-55-0x0000000000408430-mapping.dmp

memory/388-57-0x00000000005FF000-0x0000000000617000-memory.dmp

memory/388-59-0x0000000000220000-0x0000000000249000-memory.dmp

memory/556-58-0x0000000000400000-0x000000000043C000-memory.dmp

memory/556-60-0x0000000000400000-0x000000000043C000-memory.dmp

memory/556-61-0x0000000076C81000-0x0000000076C83000-memory.dmp

memory/556-62-0x0000000060900000-0x0000000060992000-memory.dmp

\ProgramData\nss3.dll

MD5 bfac4e3c5908856ba17d41edcd455a51
SHA1 8eec7e888767aa9e4cca8ff246eb2aacb9170428
SHA256 e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78
SHA512 2565bab776c4d732ffb1f9b415992a4c65b81bcd644a9a1df1333a269e322925fc1df4f76913463296efd7c88ef194c3056de2f1ca1357d7b5fe5ff0da877a66

\ProgramData\mozglue.dll

MD5 8f73c08a9660691143661bf7332c3c27
SHA1 37fa65dd737c50fda710fdbde89e51374d0c204a
SHA256 3fe6b1c54b8cf28f571e0c5d6636b4069a8ab00b4f11dd842cfec00691d0c9cd
SHA512 0042ecf9b3571bb5eba2de893e8b2371df18f7c5a589f52ee66e4bfbaa15a5b8b7cc6a155792aaa8988528c27196896d5e82e1751c998bacea0d92395f66ad89

memory/524-83-0x0000000000000000-mapping.dmp

memory/1804-84-0x0000000000000000-mapping.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2022-04-19 07:34

Reported

2022-04-19 07:37

Platform

win10v2004-20220414-en

Max time kernel

142s

Max time network

182s

Command Line

"C:\Users\Admin\AppData\Local\Temp\a2c6f733cee76e07ef2fe055e20bafcf443c5f22a2b97bf92cc84e608cc53d58.exe"

Signatures

Arkei

stealer arkei

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\a2c6f733cee76e07ef2fe055e20bafcf443c5f22a2b97bf92cc84e608cc53d58.exe N/A

Reads user/profile data of web browsers

spyware stealer

Accesses cryptocurrency files/wallets, possible credential harvesting

spyware

Checks installed software on the system

discovery

Enumerates physical storage devices

Checks processor information in registry

Description Indicator Process Target
Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 C:\Users\Admin\AppData\Local\Temp\a2c6f733cee76e07ef2fe055e20bafcf443c5f22a2b97bf92cc84e608cc53d58.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Users\Admin\AppData\Local\Temp\a2c6f733cee76e07ef2fe055e20bafcf443c5f22a2b97bf92cc84e608cc53d58.exe N/A

Delays execution with timeout.exe

evasion
Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\timeout.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4936 wrote to memory of 1760 N/A C:\Users\Admin\AppData\Local\Temp\a2c6f733cee76e07ef2fe055e20bafcf443c5f22a2b97bf92cc84e608cc53d58.exe C:\Users\Admin\AppData\Local\Temp\a2c6f733cee76e07ef2fe055e20bafcf443c5f22a2b97bf92cc84e608cc53d58.exe
PID 4936 wrote to memory of 1760 N/A C:\Users\Admin\AppData\Local\Temp\a2c6f733cee76e07ef2fe055e20bafcf443c5f22a2b97bf92cc84e608cc53d58.exe C:\Users\Admin\AppData\Local\Temp\a2c6f733cee76e07ef2fe055e20bafcf443c5f22a2b97bf92cc84e608cc53d58.exe
PID 4936 wrote to memory of 1760 N/A C:\Users\Admin\AppData\Local\Temp\a2c6f733cee76e07ef2fe055e20bafcf443c5f22a2b97bf92cc84e608cc53d58.exe C:\Users\Admin\AppData\Local\Temp\a2c6f733cee76e07ef2fe055e20bafcf443c5f22a2b97bf92cc84e608cc53d58.exe
PID 4936 wrote to memory of 1760 N/A C:\Users\Admin\AppData\Local\Temp\a2c6f733cee76e07ef2fe055e20bafcf443c5f22a2b97bf92cc84e608cc53d58.exe C:\Users\Admin\AppData\Local\Temp\a2c6f733cee76e07ef2fe055e20bafcf443c5f22a2b97bf92cc84e608cc53d58.exe
PID 4936 wrote to memory of 1760 N/A C:\Users\Admin\AppData\Local\Temp\a2c6f733cee76e07ef2fe055e20bafcf443c5f22a2b97bf92cc84e608cc53d58.exe C:\Users\Admin\AppData\Local\Temp\a2c6f733cee76e07ef2fe055e20bafcf443c5f22a2b97bf92cc84e608cc53d58.exe
PID 4936 wrote to memory of 1760 N/A C:\Users\Admin\AppData\Local\Temp\a2c6f733cee76e07ef2fe055e20bafcf443c5f22a2b97bf92cc84e608cc53d58.exe C:\Users\Admin\AppData\Local\Temp\a2c6f733cee76e07ef2fe055e20bafcf443c5f22a2b97bf92cc84e608cc53d58.exe
PID 4936 wrote to memory of 1760 N/A C:\Users\Admin\AppData\Local\Temp\a2c6f733cee76e07ef2fe055e20bafcf443c5f22a2b97bf92cc84e608cc53d58.exe C:\Users\Admin\AppData\Local\Temp\a2c6f733cee76e07ef2fe055e20bafcf443c5f22a2b97bf92cc84e608cc53d58.exe
PID 4936 wrote to memory of 1760 N/A C:\Users\Admin\AppData\Local\Temp\a2c6f733cee76e07ef2fe055e20bafcf443c5f22a2b97bf92cc84e608cc53d58.exe C:\Users\Admin\AppData\Local\Temp\a2c6f733cee76e07ef2fe055e20bafcf443c5f22a2b97bf92cc84e608cc53d58.exe
PID 4936 wrote to memory of 1760 N/A C:\Users\Admin\AppData\Local\Temp\a2c6f733cee76e07ef2fe055e20bafcf443c5f22a2b97bf92cc84e608cc53d58.exe C:\Users\Admin\AppData\Local\Temp\a2c6f733cee76e07ef2fe055e20bafcf443c5f22a2b97bf92cc84e608cc53d58.exe
PID 1760 wrote to memory of 4880 N/A C:\Users\Admin\AppData\Local\Temp\a2c6f733cee76e07ef2fe055e20bafcf443c5f22a2b97bf92cc84e608cc53d58.exe C:\Windows\SysWOW64\cmd.exe
PID 1760 wrote to memory of 4880 N/A C:\Users\Admin\AppData\Local\Temp\a2c6f733cee76e07ef2fe055e20bafcf443c5f22a2b97bf92cc84e608cc53d58.exe C:\Windows\SysWOW64\cmd.exe
PID 1760 wrote to memory of 4880 N/A C:\Users\Admin\AppData\Local\Temp\a2c6f733cee76e07ef2fe055e20bafcf443c5f22a2b97bf92cc84e608cc53d58.exe C:\Windows\SysWOW64\cmd.exe
PID 4880 wrote to memory of 2536 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 4880 wrote to memory of 2536 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 4880 wrote to memory of 2536 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe

Processes

C:\Users\Admin\AppData\Local\Temp\a2c6f733cee76e07ef2fe055e20bafcf443c5f22a2b97bf92cc84e608cc53d58.exe

"C:\Users\Admin\AppData\Local\Temp\a2c6f733cee76e07ef2fe055e20bafcf443c5f22a2b97bf92cc84e608cc53d58.exe"

C:\Users\Admin\AppData\Local\Temp\a2c6f733cee76e07ef2fe055e20bafcf443c5f22a2b97bf92cc84e608cc53d58.exe

"C:\Users\Admin\AppData\Local\Temp\a2c6f733cee76e07ef2fe055e20bafcf443c5f22a2b97bf92cc84e608cc53d58.exe"

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Users\Admin\AppData\Local\Temp\a2c6f733cee76e07ef2fe055e20bafcf443c5f22a2b97bf92cc84e608cc53d58.exe" & exit

C:\Windows\SysWOW64\timeout.exe

timeout /t 5

Network

Country Destination Domain Proto
NL 87.248.202.1:80 tcp
NL 104.110.191.140:80 tcp
NL 104.110.191.140:80 tcp
NL 104.110.191.140:80 tcp
NL 104.110.191.140:80 tcp
US 13.89.178.26:443 tcp
GB 92.123.140.25:80 tcp
US 8.8.8.8:53 226.101.242.52.in-addr.arpa udp
US 8.8.8.8:53 jsdkci.link udp
RU 45.8.124.64:80 jsdkci.link tcp
RU 45.8.124.64:80 jsdkci.link tcp
RU 45.8.124.64:80 jsdkci.link tcp
US 8.8.8.8:53 9.9.0.0.0.0.0.0.0.0.0.0.0.0.0.0.3.0.0.0.2.0.0.0.0.2.0.1.3.0.6.2.ip6.arpa udp

Files

memory/4936-130-0x00000000005DF000-0x00000000005F7000-memory.dmp

memory/1760-131-0x0000000000000000-mapping.dmp

memory/1760-132-0x0000000000400000-0x000000000043C000-memory.dmp

memory/4936-134-0x00000000005DF000-0x00000000005F7000-memory.dmp

memory/4936-136-0x0000000002060000-0x0000000002089000-memory.dmp

memory/1760-135-0x0000000000400000-0x000000000043C000-memory.dmp

memory/1760-137-0x0000000000400000-0x000000000043C000-memory.dmp

memory/1760-138-0x0000000060900000-0x0000000060992000-memory.dmp

C:\ProgramData\nss3.dll

MD5 bfac4e3c5908856ba17d41edcd455a51
SHA1 8eec7e888767aa9e4cca8ff246eb2aacb9170428
SHA256 e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78
SHA512 2565bab776c4d732ffb1f9b415992a4c65b81bcd644a9a1df1333a269e322925fc1df4f76913463296efd7c88ef194c3056de2f1ca1357d7b5fe5ff0da877a66

C:\ProgramData\mozglue.dll

MD5 8f73c08a9660691143661bf7332c3c27
SHA1 37fa65dd737c50fda710fdbde89e51374d0c204a
SHA256 3fe6b1c54b8cf28f571e0c5d6636b4069a8ab00b4f11dd842cfec00691d0c9cd
SHA512 0042ecf9b3571bb5eba2de893e8b2371df18f7c5a589f52ee66e4bfbaa15a5b8b7cc6a155792aaa8988528c27196896d5e82e1751c998bacea0d92395f66ad89

memory/4880-159-0x0000000000000000-mapping.dmp

memory/2536-160-0x0000000000000000-mapping.dmp