Malware Analysis Report

2025-01-02 06:53

Sample ID 220503-zay13sefcn
Target d73b5c9ba3ddf0b41ea66cf4eea9098d4e810d195cfc37539010d6e49b954344
SHA256 d73b5c9ba3ddf0b41ea66cf4eea9098d4e810d195cfc37539010d6e49b954344
Tags
onlylogger loader
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

d73b5c9ba3ddf0b41ea66cf4eea9098d4e810d195cfc37539010d6e49b954344

Threat Level: Known bad

The file d73b5c9ba3ddf0b41ea66cf4eea9098d4e810d195cfc37539010d6e49b954344 was found to be: Known bad.

Malicious Activity Summary

onlylogger loader

OnlyLogger

OnlyLogger Payload

Deletes itself

Checks computer location settings

Program crash

Enumerates physical storage devices

Suspicious use of AdjustPrivilegeToken

Kills process with taskkill

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2022-05-03 20:31

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2022-05-03 20:31

Reported

2022-05-03 20:34

Platform

win7-20220414-en

Max time kernel

43s

Max time network

47s

Command Line

"C:\Users\Admin\AppData\Local\Temp\d73b5c9ba3ddf0b41ea66cf4eea9098d4e810d195cfc37539010d6e49b954344.exe"

Signatures

OnlyLogger

loader onlylogger

OnlyLogger Payload

Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A

Deletes itself

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

Enumerates physical storage devices

Kills process with taskkill

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

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\taskkill.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\d73b5c9ba3ddf0b41ea66cf4eea9098d4e810d195cfc37539010d6e49b954344.exe

"C:\Users\Admin\AppData\Local\Temp\d73b5c9ba3ddf0b41ea66cf4eea9098d4e810d195cfc37539010d6e49b954344.exe"

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c taskkill /im "d73b5c9ba3ddf0b41ea66cf4eea9098d4e810d195cfc37539010d6e49b954344.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\d73b5c9ba3ddf0b41ea66cf4eea9098d4e810d195cfc37539010d6e49b954344.exe" & exit

C:\Windows\SysWOW64\taskkill.exe

taskkill /im "d73b5c9ba3ddf0b41ea66cf4eea9098d4e810d195cfc37539010d6e49b954344.exe" /f

Network

Country Destination Domain Proto
US 8.8.8.8:53 gc-partners.in udp

Files

memory/1792-54-0x0000000075451000-0x0000000075453000-memory.dmp

memory/1792-55-0x000000000068B000-0x00000000006B3000-memory.dmp

memory/1792-56-0x0000000000220000-0x0000000000266000-memory.dmp

memory/1792-57-0x0000000000400000-0x00000000004F6000-memory.dmp

memory/968-58-0x0000000000000000-mapping.dmp

memory/1316-59-0x0000000000000000-mapping.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2022-05-03 20:31

Reported

2022-05-03 20:34

Platform

win10v2004-20220414-en

Max time kernel

144s

Max time network

147s

Command Line

"C:\Users\Admin\AppData\Local\Temp\d73b5c9ba3ddf0b41ea66cf4eea9098d4e810d195cfc37539010d6e49b954344.exe"

Signatures

OnlyLogger

loader onlylogger

OnlyLogger Payload

Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\d73b5c9ba3ddf0b41ea66cf4eea9098d4e810d195cfc37539010d6e49b954344.exe N/A

Enumerates physical storage devices

Kills process with taskkill

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

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\taskkill.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\d73b5c9ba3ddf0b41ea66cf4eea9098d4e810d195cfc37539010d6e49b954344.exe

"C:\Users\Admin\AppData\Local\Temp\d73b5c9ba3ddf0b41ea66cf4eea9098d4e810d195cfc37539010d6e49b954344.exe"

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c taskkill /im "d73b5c9ba3ddf0b41ea66cf4eea9098d4e810d195cfc37539010d6e49b954344.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\d73b5c9ba3ddf0b41ea66cf4eea9098d4e810d195cfc37539010d6e49b954344.exe" & exit

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 1864 -ip 1864

C:\Windows\SysWOW64\taskkill.exe

taskkill /im "d73b5c9ba3ddf0b41ea66cf4eea9098d4e810d195cfc37539010d6e49b954344.exe" /f

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1864 -s 1264

Network

Country Destination Domain Proto
NL 104.110.191.133:80 tcp
US 8.8.8.8:53 gc-partners.in udp
US 20.189.173.6:443 tcp
NL 104.110.191.133:80 tcp
NL 104.110.191.133:80 tcp
US 8.8.8.8:53 226.101.242.52.in-addr.arpa udp

Files

memory/1864-130-0x0000000000829000-0x0000000000851000-memory.dmp

memory/1864-131-0x00000000007C0000-0x0000000000806000-memory.dmp

memory/1864-132-0x0000000000400000-0x00000000004F6000-memory.dmp

memory/2644-133-0x0000000000000000-mapping.dmp

memory/2204-134-0x0000000000000000-mapping.dmp