Malware Analysis Report

2024-10-18 23:09

Sample ID 240521-rsj1waha87
Target 639cb459c7bf64f47b7376a85b73a5b9_JaffaCakes118
SHA256 3fdc70759c5fb107d6eeb6b5be8fb50170e81ba1099dfa1ba30d6605d3264211
Tags
guloader downloader persistence
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

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

3fdc70759c5fb107d6eeb6b5be8fb50170e81ba1099dfa1ba30d6605d3264211

Threat Level: Known bad

The file 639cb459c7bf64f47b7376a85b73a5b9_JaffaCakes118 was found to be: Known bad.

Malicious Activity Summary

guloader downloader persistence

Guloader,Cloudeye

Executes dropped EXE

Loads dropped DLL

Checks computer location settings

Adds Run key to start application

Suspicious use of NtSetInformationThreadHideFromDebugger

Suspicious use of SetThreadContext

Enumerates physical storage devices

Unsigned PE

Suspicious behavior: MapViewOfSection

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-05-21 14:27

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-05-21 14:27

Reported

2024-05-21 14:29

Platform

win7-20240508-en

Max time kernel

150s

Max time network

149s

Command Line

"C:\Users\Admin\AppData\Local\Temp\New PO as per attached-2020-6642.exe"

Signatures

Guloader,Cloudeye

downloader guloader

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\Sandsynliggres\rainmak.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce\Bolvrkercalcei2 = "C:\\Users\\Admin\\Sandsynliggres\\rainmak.vbs" C:\Users\Admin\AppData\Local\Temp\New PO as per attached-2020-6642.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce\Bolvrkercalcei2 = "C:\\Users\\Admin\\Sandsynliggres\\rainmak.vbs" C:\Users\Admin\Sandsynliggres\rainmak.exe N/A

Enumerates physical storage devices

Suspicious behavior: MapViewOfSection

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\New PO as per attached-2020-6642.exe N/A
N/A N/A C:\Users\Admin\Sandsynliggres\rainmak.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\New PO as per attached-2020-6642.exe N/A
N/A N/A C:\Users\Admin\Sandsynliggres\rainmak.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2420 wrote to memory of 2188 N/A C:\Users\Admin\AppData\Local\Temp\New PO as per attached-2020-6642.exe C:\Users\Admin\AppData\Local\Temp\New PO as per attached-2020-6642.exe
PID 2420 wrote to memory of 2188 N/A C:\Users\Admin\AppData\Local\Temp\New PO as per attached-2020-6642.exe C:\Users\Admin\AppData\Local\Temp\New PO as per attached-2020-6642.exe
PID 2420 wrote to memory of 2188 N/A C:\Users\Admin\AppData\Local\Temp\New PO as per attached-2020-6642.exe C:\Users\Admin\AppData\Local\Temp\New PO as per attached-2020-6642.exe
PID 2420 wrote to memory of 2188 N/A C:\Users\Admin\AppData\Local\Temp\New PO as per attached-2020-6642.exe C:\Users\Admin\AppData\Local\Temp\New PO as per attached-2020-6642.exe
PID 2420 wrote to memory of 2188 N/A C:\Users\Admin\AppData\Local\Temp\New PO as per attached-2020-6642.exe C:\Users\Admin\AppData\Local\Temp\New PO as per attached-2020-6642.exe
PID 2188 wrote to memory of 3004 N/A C:\Users\Admin\AppData\Local\Temp\New PO as per attached-2020-6642.exe C:\Users\Admin\Sandsynliggres\rainmak.exe
PID 2188 wrote to memory of 3004 N/A C:\Users\Admin\AppData\Local\Temp\New PO as per attached-2020-6642.exe C:\Users\Admin\Sandsynliggres\rainmak.exe
PID 2188 wrote to memory of 3004 N/A C:\Users\Admin\AppData\Local\Temp\New PO as per attached-2020-6642.exe C:\Users\Admin\Sandsynliggres\rainmak.exe
PID 2188 wrote to memory of 3004 N/A C:\Users\Admin\AppData\Local\Temp\New PO as per attached-2020-6642.exe C:\Users\Admin\Sandsynliggres\rainmak.exe
PID 3004 wrote to memory of 2744 N/A C:\Users\Admin\Sandsynliggres\rainmak.exe C:\Users\Admin\Sandsynliggres\rainmak.exe
PID 3004 wrote to memory of 2744 N/A C:\Users\Admin\Sandsynliggres\rainmak.exe C:\Users\Admin\Sandsynliggres\rainmak.exe
PID 3004 wrote to memory of 2744 N/A C:\Users\Admin\Sandsynliggres\rainmak.exe C:\Users\Admin\Sandsynliggres\rainmak.exe
PID 3004 wrote to memory of 2744 N/A C:\Users\Admin\Sandsynliggres\rainmak.exe C:\Users\Admin\Sandsynliggres\rainmak.exe
PID 3004 wrote to memory of 2744 N/A C:\Users\Admin\Sandsynliggres\rainmak.exe C:\Users\Admin\Sandsynliggres\rainmak.exe

Processes

C:\Users\Admin\AppData\Local\Temp\New PO as per attached-2020-6642.exe

"C:\Users\Admin\AppData\Local\Temp\New PO as per attached-2020-6642.exe"

C:\Users\Admin\AppData\Local\Temp\New PO as per attached-2020-6642.exe

"C:\Users\Admin\AppData\Local\Temp\New PO as per attached-2020-6642.exe"

C:\Users\Admin\Sandsynliggres\rainmak.exe

"C:\Users\Admin\Sandsynliggres\rainmak.exe"

C:\Users\Admin\Sandsynliggres\rainmak.exe

"C:\Users\Admin\Sandsynliggres\rainmak.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 onedrive.live.com udp
US 13.107.137.11:443 onedrive.live.com tcp
US 13.107.137.11:443 onedrive.live.com tcp
US 13.107.137.11:443 onedrive.live.com tcp
US 13.107.137.11:443 onedrive.live.com tcp
US 13.107.137.11:443 onedrive.live.com tcp
US 13.107.137.11:443 onedrive.live.com tcp
US 13.107.137.11:443 onedrive.live.com tcp
US 13.107.137.11:443 onedrive.live.com tcp
US 13.107.137.11:443 onedrive.live.com tcp
US 13.107.137.11:443 onedrive.live.com tcp
US 13.107.137.11:443 onedrive.live.com tcp
US 13.107.137.11:443 onedrive.live.com tcp
US 13.107.137.11:443 onedrive.live.com tcp
US 13.107.137.11:443 onedrive.live.com tcp
US 13.107.137.11:443 onedrive.live.com tcp
US 13.107.137.11:443 onedrive.live.com tcp
US 13.107.137.11:443 onedrive.live.com tcp
US 13.107.137.11:443 onedrive.live.com tcp
US 13.107.137.11:443 onedrive.live.com tcp
US 13.107.137.11:443 onedrive.live.com tcp
US 13.107.137.11:443 onedrive.live.com tcp
US 13.107.137.11:443 onedrive.live.com tcp
US 13.107.137.11:443 onedrive.live.com tcp
US 13.107.137.11:443 onedrive.live.com tcp
US 13.107.137.11:443 onedrive.live.com tcp
US 13.107.137.11:443 onedrive.live.com tcp
US 13.107.137.11:443 onedrive.live.com tcp
US 13.107.137.11:443 onedrive.live.com tcp
US 13.107.137.11:443 onedrive.live.com tcp
US 13.107.137.11:443 onedrive.live.com tcp
US 13.107.137.11:443 onedrive.live.com tcp
US 13.107.137.11:443 onedrive.live.com tcp
US 13.107.137.11:443 onedrive.live.com tcp
US 13.107.137.11:443 onedrive.live.com tcp
US 13.107.137.11:443 onedrive.live.com tcp
US 13.107.137.11:443 onedrive.live.com tcp
US 13.107.137.11:443 onedrive.live.com tcp
US 13.107.137.11:443 onedrive.live.com tcp
US 13.107.137.11:443 onedrive.live.com tcp
US 13.107.137.11:443 onedrive.live.com tcp
US 13.107.137.11:443 onedrive.live.com tcp
US 13.107.137.11:443 onedrive.live.com tcp
US 13.107.137.11:443 onedrive.live.com tcp
US 13.107.137.11:443 onedrive.live.com tcp
US 13.107.137.11:443 onedrive.live.com tcp
US 13.107.137.11:443 onedrive.live.com tcp
US 13.107.137.11:443 onedrive.live.com tcp
US 13.107.137.11:443 onedrive.live.com tcp
US 13.107.137.11:443 onedrive.live.com tcp
US 13.107.137.11:443 onedrive.live.com tcp
US 13.107.137.11:443 onedrive.live.com tcp
US 13.107.137.11:443 onedrive.live.com tcp
US 13.107.137.11:443 onedrive.live.com tcp
US 13.107.137.11:443 onedrive.live.com tcp
US 13.107.137.11:443 onedrive.live.com tcp
US 13.107.137.11:443 onedrive.live.com tcp
US 13.107.137.11:443 onedrive.live.com tcp
US 13.107.137.11:443 onedrive.live.com tcp
US 13.107.137.11:443 onedrive.live.com tcp
US 13.107.137.11:443 onedrive.live.com tcp
US 13.107.137.11:443 onedrive.live.com tcp
US 13.107.137.11:443 onedrive.live.com tcp
US 13.107.137.11:443 onedrive.live.com tcp
US 13.107.137.11:443 onedrive.live.com tcp
US 13.107.137.11:443 onedrive.live.com tcp
US 13.107.137.11:443 onedrive.live.com tcp
US 13.107.137.11:443 onedrive.live.com tcp
US 13.107.137.11:443 onedrive.live.com tcp
US 13.107.137.11:443 onedrive.live.com tcp
US 13.107.137.11:443 onedrive.live.com tcp
US 13.107.137.11:443 onedrive.live.com tcp
US 13.107.137.11:443 onedrive.live.com tcp
US 13.107.137.11:443 onedrive.live.com tcp
US 13.107.137.11:443 onedrive.live.com tcp
US 13.107.137.11:443 onedrive.live.com tcp
US 13.107.137.11:443 onedrive.live.com tcp
US 13.107.137.11:443 onedrive.live.com tcp
US 13.107.137.11:443 onedrive.live.com tcp
US 13.107.137.11:443 onedrive.live.com tcp
US 13.107.137.11:443 onedrive.live.com tcp
US 13.107.137.11:443 onedrive.live.com tcp
US 13.107.137.11:443 onedrive.live.com tcp
US 13.107.137.11:443 onedrive.live.com tcp
US 13.107.137.11:443 onedrive.live.com tcp
US 13.107.137.11:443 onedrive.live.com tcp
US 13.107.137.11:443 onedrive.live.com tcp
US 13.107.137.11:443 onedrive.live.com tcp
US 13.107.137.11:443 onedrive.live.com tcp
US 13.107.137.11:443 onedrive.live.com tcp
US 13.107.137.11:443 onedrive.live.com tcp
US 13.107.137.11:443 onedrive.live.com tcp
US 13.107.137.11:443 onedrive.live.com tcp
US 13.107.137.11:443 onedrive.live.com tcp
US 13.107.137.11:443 onedrive.live.com tcp
US 13.107.137.11:443 onedrive.live.com tcp
US 13.107.137.11:443 onedrive.live.com tcp
US 13.107.137.11:443 onedrive.live.com tcp
US 13.107.137.11:443 onedrive.live.com tcp
US 13.107.137.11:443 onedrive.live.com tcp
US 13.107.137.11:443 onedrive.live.com tcp
US 13.107.137.11:443 onedrive.live.com tcp
US 13.107.137.11:443 onedrive.live.com tcp
US 13.107.137.11:443 onedrive.live.com tcp
US 13.107.137.11:443 onedrive.live.com tcp
US 13.107.137.11:443 onedrive.live.com tcp
US 13.107.137.11:443 onedrive.live.com tcp
US 13.107.137.11:443 onedrive.live.com tcp
US 13.107.137.11:443 onedrive.live.com tcp
US 13.107.137.11:443 onedrive.live.com tcp
US 13.107.137.11:443 tcp

Files

memory/2420-2-0x00000000004E0000-0x00000000004E7000-memory.dmp

memory/2188-9-0x00000000771E0000-0x0000000077389000-memory.dmp

memory/2420-8-0x00000000771E0000-0x0000000077389000-memory.dmp

memory/2188-5-0x0000000000400000-0x00000000004DF000-memory.dmp

memory/2420-4-0x00000000004E0000-0x00000000004E7000-memory.dmp

memory/2420-3-0x00000000771E1000-0x00000000772E2000-memory.dmp

\Users\Admin\Sandsynliggres\rainmak.exe

MD5 b17644b26f54aee17d39cb7bfceee846
SHA1 a6b0b1155257bbaf9d710fd8d9b92b94601d82d9
SHA256 6f840786f7756f4b7bd84cfc327477af8a3aa99ba9768581f52a7ba3df9af806
SHA512 bad64051fe0604f25630515ffa703304c153752664b846f1f90e8dc0d3bd3c426ccef8b169f013ba3d49dbaf4715be39ae3a0e8ff08ea6177427b22f459eeb93

memory/2188-19-0x0000000000400000-0x00000000004DF000-memory.dmp

memory/3004-24-0x00000000002A0000-0x00000000002A7000-memory.dmp

memory/2744-28-0x00000000771E0000-0x0000000077389000-memory.dmp

memory/3004-27-0x00000000773D0000-0x00000000774A6000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\Cab319D.tmp

MD5 29f65ba8e88c063813cc50a4ea544e93
SHA1 05a7040d5c127e68c25d81cc51271ffb8bef3568
SHA256 1ed81fa8dfb6999a9fedc6e779138ffd99568992e22d300acd181a6d2c8de184
SHA512 e29b2e92c496245bed3372578074407e8ef8882906ce10c35b3c8deebfefe01b5fd7f3030acaa693e175f4b7aca6cd7d8d10ae1c731b09c5fa19035e005de3aa

C:\Users\Admin\AppData\Local\Temp\Tar31B0.tmp

MD5 435a9ac180383f9fa094131b173a2f7b
SHA1 76944ea657a9db94f9a4bef38f88c46ed4166983
SHA256 67dc37ed50b8e63272b49a254a6039ee225974f1d767bb83eb1fd80e759a7c34
SHA512 1a6b277611959720a9c71114957620517ad94541302f164eb872bd322292a952409bafb8bc2ac793b16ad5f25d83f8594ccff2b7834e3c2b2b941e6fc84c009a

Analysis: behavioral2

Detonation Overview

Submitted

2024-05-21 14:27

Reported

2024-05-21 14:29

Platform

win10v2004-20240508-en

Max time kernel

149s

Max time network

149s

Command Line

"C:\Users\Admin\AppData\Local\Temp\New PO as per attached-2020-6642.exe"

Signatures

Guloader,Cloudeye

downloader guloader

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-2804150937-2146708401-419095071-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\New PO as per attached-2020-6642.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\Sandsynliggres\rainmak.exe N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\Sandsynliggres\rainmak.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-2804150937-2146708401-419095071-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\Bolvrkercalcei2 = "C:\\Users\\Admin\\Sandsynliggres\\rainmak.vbs" C:\Users\Admin\AppData\Local\Temp\New PO as per attached-2020-6642.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-2804150937-2146708401-419095071-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\Bolvrkercalcei2 = "C:\\Users\\Admin\\Sandsynliggres\\rainmak.vbs" C:\Users\Admin\Sandsynliggres\rainmak.exe N/A

Enumerates physical storage devices

Suspicious behavior: MapViewOfSection

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\New PO as per attached-2020-6642.exe N/A
N/A N/A C:\Users\Admin\Sandsynliggres\rainmak.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\New PO as per attached-2020-6642.exe N/A
N/A N/A C:\Users\Admin\Sandsynliggres\rainmak.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2864 wrote to memory of 616 N/A C:\Users\Admin\AppData\Local\Temp\New PO as per attached-2020-6642.exe C:\Users\Admin\AppData\Local\Temp\New PO as per attached-2020-6642.exe
PID 2864 wrote to memory of 616 N/A C:\Users\Admin\AppData\Local\Temp\New PO as per attached-2020-6642.exe C:\Users\Admin\AppData\Local\Temp\New PO as per attached-2020-6642.exe
PID 2864 wrote to memory of 616 N/A C:\Users\Admin\AppData\Local\Temp\New PO as per attached-2020-6642.exe C:\Users\Admin\AppData\Local\Temp\New PO as per attached-2020-6642.exe
PID 2864 wrote to memory of 616 N/A C:\Users\Admin\AppData\Local\Temp\New PO as per attached-2020-6642.exe C:\Users\Admin\AppData\Local\Temp\New PO as per attached-2020-6642.exe
PID 616 wrote to memory of 2428 N/A C:\Users\Admin\AppData\Local\Temp\New PO as per attached-2020-6642.exe C:\Users\Admin\Sandsynliggres\rainmak.exe
PID 616 wrote to memory of 2428 N/A C:\Users\Admin\AppData\Local\Temp\New PO as per attached-2020-6642.exe C:\Users\Admin\Sandsynliggres\rainmak.exe
PID 616 wrote to memory of 2428 N/A C:\Users\Admin\AppData\Local\Temp\New PO as per attached-2020-6642.exe C:\Users\Admin\Sandsynliggres\rainmak.exe
PID 2428 wrote to memory of 3868 N/A C:\Users\Admin\Sandsynliggres\rainmak.exe C:\Users\Admin\Sandsynliggres\rainmak.exe
PID 2428 wrote to memory of 3868 N/A C:\Users\Admin\Sandsynliggres\rainmak.exe C:\Users\Admin\Sandsynliggres\rainmak.exe
PID 2428 wrote to memory of 3868 N/A C:\Users\Admin\Sandsynliggres\rainmak.exe C:\Users\Admin\Sandsynliggres\rainmak.exe
PID 2428 wrote to memory of 3868 N/A C:\Users\Admin\Sandsynliggres\rainmak.exe C:\Users\Admin\Sandsynliggres\rainmak.exe

Processes

C:\Users\Admin\AppData\Local\Temp\New PO as per attached-2020-6642.exe

"C:\Users\Admin\AppData\Local\Temp\New PO as per attached-2020-6642.exe"

C:\Users\Admin\AppData\Local\Temp\New PO as per attached-2020-6642.exe

"C:\Users\Admin\AppData\Local\Temp\New PO as per attached-2020-6642.exe"

C:\Users\Admin\Sandsynliggres\rainmak.exe

"C:\Users\Admin\Sandsynliggres\rainmak.exe"

C:\Users\Admin\Sandsynliggres\rainmak.exe

"C:\Users\Admin\Sandsynliggres\rainmak.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
US 8.8.8.8:53 91.90.14.23.in-addr.arpa udp
US 8.8.8.8:53 74.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.237:443 g.bing.com tcp
US 8.8.8.8:53 onedrive.live.com udp
US 13.107.137.11:443 onedrive.live.com tcp
NL 23.62.61.137:443 www.bing.com tcp
US 8.8.8.8:53 237.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 11.137.107.13.in-addr.arpa udp
US 8.8.8.8:53 137.61.62.23.in-addr.arpa udp
NL 23.62.61.137:443 www.bing.com tcp
US 8.8.8.8:53 88.156.103.20.in-addr.arpa udp
US 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 65.142.123.92.in-addr.arpa udp
US 52.111.229.43:443 tcp
US 8.8.8.8:53 30.243.111.52.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 200.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 udp

Files

memory/2864-2-0x0000000002A00000-0x0000000002A07000-memory.dmp

memory/2864-3-0x0000000077661000-0x0000000077781000-memory.dmp

memory/616-4-0x0000000000400000-0x00000000004E7000-memory.dmp

memory/2864-6-0x0000000002A00000-0x0000000002A07000-memory.dmp

memory/616-9-0x0000000077661000-0x0000000077781000-memory.dmp

memory/616-8-0x00000000004F0000-0x00000000005F0000-memory.dmp

C:\Users\Admin\Sandsynliggres\rainmak.exe

MD5 b17644b26f54aee17d39cb7bfceee846
SHA1 a6b0b1155257bbaf9d710fd8d9b92b94601d82d9
SHA256 6f840786f7756f4b7bd84cfc327477af8a3aa99ba9768581f52a7ba3df9af806
SHA512 bad64051fe0604f25630515ffa703304c153752664b846f1f90e8dc0d3bd3c426ccef8b169f013ba3d49dbaf4715be39ae3a0e8ff08ea6177427b22f459eeb93

memory/616-21-0x00000000004F0000-0x00000000005F0000-memory.dmp

memory/2428-24-0x00000000028C0000-0x00000000028C7000-memory.dmp

memory/2428-25-0x0000000077661000-0x0000000077781000-memory.dmp

memory/2428-29-0x00000000028C0000-0x00000000028C7000-memory.dmp

memory/3868-30-0x00000000004F0000-0x00000000005F0000-memory.dmp