Malware Analysis Report

2024-11-13 17:39

Sample ID 241107-a326rssbpj
Target 07112024_0045_06112024_Anfrage_244384.7z
SHA256 fabdde579b133e129408ab4ecf04fad0a9807fe70bf61383f236dcb7674999e0
Tags
discovery guloader downloader
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral4

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral3

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

fabdde579b133e129408ab4ecf04fad0a9807fe70bf61383f236dcb7674999e0

Threat Level: Known bad

The file 07112024_0045_06112024_Anfrage_244384.7z was found to be: Known bad.

Malicious Activity Summary

discovery guloader downloader

Guloader,Cloudeye

Guloader family

Loads dropped DLL

Suspicious use of NtSetInformationThreadHideFromDebugger

Suspicious use of NtCreateThreadExHideFromDebugger

Suspicious use of SetThreadContext

Drops file in Windows directory

Program crash

Enumerates physical storage devices

System Location Discovery: System Language Discovery

Unsigned PE

NSIS installer

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: MapViewOfSection

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-07 00:45

Signatures

Unsigned PE

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

NSIS installer

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

Analysis: behavioral4

Detonation Overview

Submitted

2024-11-07 00:45

Reported

2024-11-07 00:50

Platform

win10v2004-20241007-en

Max time kernel

95s

Max time network

211s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\System.dll,#1

Signatures

Program crash

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Windows\SysWOW64\rundll32.exe

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\rundll32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2028 wrote to memory of 4524 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2028 wrote to memory of 4524 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2028 wrote to memory of 4524 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\System.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\System.dll,#1

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4524 -ip 4524

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4524 -s 612

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 77.190.18.2.in-addr.arpa udp
US 8.8.8.8:53 2.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 8.8.8.8:53 212.20.149.52.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 73.190.18.2.in-addr.arpa udp
US 8.8.8.8:53 79.190.18.2.in-addr.arpa udp
US 8.8.8.8:53 14.227.111.52.in-addr.arpa udp

Files

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-11-07 00:45

Reported

2024-11-07 00:50

Platform

win7-20241010-en

Max time kernel

293s

Max time network

299s

Command Line

"C:\Users\Admin\AppData\Local\Temp\Anfrage_244384.exe"

Signatures

Guloader family

guloader

Guloader,Cloudeye

downloader guloader

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\Anfrage_244384.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\Anfrage_244384.exe N/A

Suspicious use of NtSetInformationThreadHideFromDebugger

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\Anfrage_244384.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\Anfrage_244384.exe N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 3052 set thread context of 2724 N/A C:\Users\Admin\AppData\Local\Temp\Anfrage_244384.exe C:\Users\Admin\AppData\Local\Temp\Anfrage_244384.exe

Drops file in Windows directory

Description Indicator Process Target
File opened for modification C:\Windows\Bitcom\Paragraferedes75.ret C:\Users\Admin\AppData\Local\Temp\Anfrage_244384.exe N/A
File opened for modification C:\Windows\resources\soenderbro.ini C:\Users\Admin\AppData\Local\Temp\Anfrage_244384.exe N/A

Enumerates physical storage devices

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\Anfrage_244384.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\Anfrage_244384.exe N/A

Suspicious behavior: MapViewOfSection

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\Anfrage_244384.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\Anfrage_244384.exe

"C:\Users\Admin\AppData\Local\Temp\Anfrage_244384.exe"

C:\Users\Admin\AppData\Local\Temp\Anfrage_244384.exe

"C:\Users\Admin\AppData\Local\Temp\Anfrage_244384.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 familytherapycenter.rs udp
DE 188.40.95.144:443 familytherapycenter.rs tcp
DE 188.40.95.144:443 familytherapycenter.rs tcp
DE 188.40.95.144:443 familytherapycenter.rs tcp
DE 188.40.95.144:443 familytherapycenter.rs tcp
DE 188.40.95.144:443 familytherapycenter.rs tcp
DE 188.40.95.144:443 familytherapycenter.rs tcp
DE 188.40.95.144:443 familytherapycenter.rs tcp
DE 188.40.95.144:443 familytherapycenter.rs tcp
DE 188.40.95.144:443 familytherapycenter.rs tcp
DE 188.40.95.144:443 familytherapycenter.rs tcp
DE 188.40.95.144:443 familytherapycenter.rs tcp
DE 188.40.95.144:443 familytherapycenter.rs tcp
DE 188.40.95.144:443 familytherapycenter.rs tcp
DE 188.40.95.144:443 familytherapycenter.rs tcp
DE 188.40.95.144:443 familytherapycenter.rs tcp
DE 188.40.95.144:443 familytherapycenter.rs tcp
DE 188.40.95.144:443 familytherapycenter.rs tcp
DE 188.40.95.144:443 familytherapycenter.rs tcp
DE 188.40.95.144:443 familytherapycenter.rs tcp
DE 188.40.95.144:443 familytherapycenter.rs tcp
DE 188.40.95.144:443 familytherapycenter.rs tcp
DE 188.40.95.144:443 familytherapycenter.rs tcp
DE 188.40.95.144:443 familytherapycenter.rs tcp
DE 188.40.95.144:443 familytherapycenter.rs tcp
DE 188.40.95.144:443 familytherapycenter.rs tcp
DE 188.40.95.144:443 familytherapycenter.rs tcp
DE 188.40.95.144:443 familytherapycenter.rs tcp
DE 188.40.95.144:443 familytherapycenter.rs tcp
DE 188.40.95.144:443 familytherapycenter.rs tcp
DE 188.40.95.144:443 familytherapycenter.rs tcp
DE 188.40.95.144:443 familytherapycenter.rs tcp
DE 188.40.95.144:443 familytherapycenter.rs tcp
DE 188.40.95.144:443 familytherapycenter.rs tcp
DE 188.40.95.144:443 familytherapycenter.rs tcp
DE 188.40.95.144:443 familytherapycenter.rs tcp
DE 188.40.95.144:443 familytherapycenter.rs tcp
DE 188.40.95.144:443 familytherapycenter.rs tcp
DE 188.40.95.144:443 familytherapycenter.rs tcp
DE 188.40.95.144:443 familytherapycenter.rs tcp
DE 188.40.95.144:443 familytherapycenter.rs tcp
DE 188.40.95.144:443 familytherapycenter.rs tcp
DE 188.40.95.144:443 familytherapycenter.rs tcp
DE 188.40.95.144:443 familytherapycenter.rs tcp
DE 188.40.95.144:443 familytherapycenter.rs tcp
DE 188.40.95.144:443 familytherapycenter.rs tcp
DE 188.40.95.144:443 familytherapycenter.rs tcp
DE 188.40.95.144:443 familytherapycenter.rs tcp
DE 188.40.95.144:443 familytherapycenter.rs tcp
DE 188.40.95.144:443 familytherapycenter.rs tcp
DE 188.40.95.144:443 familytherapycenter.rs tcp
DE 188.40.95.144:443 familytherapycenter.rs tcp
DE 188.40.95.144:443 familytherapycenter.rs tcp
DE 188.40.95.144:443 familytherapycenter.rs tcp
DE 188.40.95.144:443 familytherapycenter.rs tcp
DE 188.40.95.144:443 familytherapycenter.rs tcp
DE 188.40.95.144:443 familytherapycenter.rs tcp
DE 188.40.95.144:443 familytherapycenter.rs tcp
DE 188.40.95.144:443 familytherapycenter.rs tcp
DE 188.40.95.144:443 familytherapycenter.rs tcp
DE 188.40.95.144:443 familytherapycenter.rs tcp
DE 188.40.95.144:443 familytherapycenter.rs tcp
DE 188.40.95.144:443 familytherapycenter.rs tcp
DE 188.40.95.144:443 familytherapycenter.rs tcp
DE 188.40.95.144:443 familytherapycenter.rs tcp
DE 188.40.95.144:443 familytherapycenter.rs tcp
DE 188.40.95.144:443 familytherapycenter.rs tcp
DE 188.40.95.144:443 familytherapycenter.rs tcp
DE 188.40.95.144:443 familytherapycenter.rs tcp
DE 188.40.95.144:443 familytherapycenter.rs tcp
DE 188.40.95.144:443 familytherapycenter.rs tcp
DE 188.40.95.144:443 familytherapycenter.rs tcp
DE 188.40.95.144:443 familytherapycenter.rs tcp
DE 188.40.95.144:443 familytherapycenter.rs tcp
DE 188.40.95.144:443 familytherapycenter.rs tcp
DE 188.40.95.144:443 familytherapycenter.rs tcp
DE 188.40.95.144:443 familytherapycenter.rs tcp
DE 188.40.95.144:443 familytherapycenter.rs tcp
DE 188.40.95.144:443 familytherapycenter.rs tcp
DE 188.40.95.144:443 familytherapycenter.rs tcp
DE 188.40.95.144:443 familytherapycenter.rs tcp
DE 188.40.95.144:443 familytherapycenter.rs tcp
DE 188.40.95.144:443 familytherapycenter.rs tcp
DE 188.40.95.144:443 familytherapycenter.rs tcp
DE 188.40.95.144:443 familytherapycenter.rs tcp
DE 188.40.95.144:443 familytherapycenter.rs tcp
DE 188.40.95.144:443 familytherapycenter.rs tcp
DE 188.40.95.144:443 familytherapycenter.rs tcp
DE 188.40.95.144:443 familytherapycenter.rs tcp
DE 188.40.95.144:443 familytherapycenter.rs tcp
DE 188.40.95.144:443 familytherapycenter.rs tcp
DE 188.40.95.144:443 familytherapycenter.rs tcp
DE 188.40.95.144:443 familytherapycenter.rs tcp

Files

\Users\Admin\AppData\Local\Temp\nsy2897.tmp\System.dll

MD5 3f176d1ee13b0d7d6bd92e1c7a0b9bae
SHA1 fe582246792774c2c9dd15639ffa0aca90d6fd0b
SHA256 fa4ab1d6f79fd677433a31ada7806373a789d34328da46ccb0449bbf347bd73e
SHA512 0a69124819b7568d0dea4e9e85ce8fe61c7ba697c934e3a95e2dcfb9f252b1d9da7faf8774b6e8efd614885507acc94987733eba09a2f5e7098b774dfc8524b6

memory/3052-18-0x00000000028D0000-0x000000000555E000-memory.dmp

memory/3052-19-0x00000000028D0000-0x000000000555E000-memory.dmp

memory/3052-21-0x00000000778C0000-0x0000000077A69000-memory.dmp

memory/3052-20-0x00000000778C1000-0x00000000779C2000-memory.dmp

memory/2724-22-0x0000000000400000-0x0000000001462000-memory.dmp

memory/2724-23-0x00000000778C0000-0x0000000077A69000-memory.dmp

memory/3052-24-0x00000000028D0000-0x000000000555E000-memory.dmp

memory/2724-25-0x0000000000400000-0x0000000001462000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-07 00:45

Reported

2024-11-07 00:50

Platform

win10v2004-20241007-en

Max time kernel

94s

Max time network

205s

Command Line

"C:\Users\Admin\AppData\Local\Temp\Anfrage_244384.exe"

Signatures

Guloader family

guloader

Guloader,Cloudeye

downloader guloader

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\Anfrage_244384.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\Anfrage_244384.exe N/A

Suspicious use of NtCreateThreadExHideFromDebugger

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\Anfrage_244384.exe N/A

Suspicious use of NtSetInformationThreadHideFromDebugger

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\Anfrage_244384.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\Anfrage_244384.exe N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 4340 set thread context of 1664 N/A C:\Users\Admin\AppData\Local\Temp\Anfrage_244384.exe C:\Users\Admin\AppData\Local\Temp\Anfrage_244384.exe

Drops file in Windows directory

Description Indicator Process Target
File opened for modification C:\Windows\Bitcom\Paragraferedes75.ret C:\Users\Admin\AppData\Local\Temp\Anfrage_244384.exe N/A
File opened for modification C:\Windows\resources\soenderbro.ini C:\Users\Admin\AppData\Local\Temp\Anfrage_244384.exe N/A

Enumerates physical storage devices

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\Anfrage_244384.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\Anfrage_244384.exe N/A

Suspicious behavior: MapViewOfSection

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\Anfrage_244384.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\Anfrage_244384.exe

"C:\Users\Admin\AppData\Local\Temp\Anfrage_244384.exe"

C:\Users\Admin\AppData\Local\Temp\Anfrage_244384.exe

"C:\Users\Admin\AppData\Local\Temp\Anfrage_244384.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 138.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
US 8.8.8.8:53 familytherapycenter.rs udp
DE 188.40.95.144:443 familytherapycenter.rs tcp
US 8.8.8.8:53 144.95.40.188.in-addr.arpa udp
US 8.8.8.8:53 32.169.19.2.in-addr.arpa udp
US 8.8.8.8:53 200.163.202.172.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 69.190.18.2.in-addr.arpa udp
US 8.8.8.8:53 98.209.201.84.in-addr.arpa udp
US 8.8.8.8:53 43.229.111.52.in-addr.arpa udp

Files

C:\Users\Admin\AppData\Local\Temp\nsu8657.tmp\System.dll

MD5 3f176d1ee13b0d7d6bd92e1c7a0b9bae
SHA1 fe582246792774c2c9dd15639ffa0aca90d6fd0b
SHA256 fa4ab1d6f79fd677433a31ada7806373a789d34328da46ccb0449bbf347bd73e
SHA512 0a69124819b7568d0dea4e9e85ce8fe61c7ba697c934e3a95e2dcfb9f252b1d9da7faf8774b6e8efd614885507acc94987733eba09a2f5e7098b774dfc8524b6

memory/4340-16-0x0000000002AC0000-0x000000000574E000-memory.dmp

memory/4340-17-0x00000000776E1000-0x0000000077801000-memory.dmp

memory/4340-18-0x0000000002AC0000-0x000000000574E000-memory.dmp

memory/1664-19-0x0000000000400000-0x0000000001654000-memory.dmp

memory/1664-20-0x0000000001660000-0x00000000042EE000-memory.dmp

memory/1664-24-0x0000000000400000-0x0000000001654000-memory.dmp

memory/1664-25-0x0000000000400000-0x0000000001654000-memory.dmp

memory/1664-26-0x0000000001660000-0x00000000042EE000-memory.dmp

memory/1664-27-0x0000000000400000-0x0000000001654000-memory.dmp

memory/1664-28-0x0000000000400000-0x0000000001654000-memory.dmp

memory/1664-31-0x0000000000400000-0x0000000001654000-memory.dmp

Analysis: behavioral3

Detonation Overview

Submitted

2024-11-07 00:45

Reported

2024-11-07 00:50

Platform

win7-20241010-en

Max time kernel

238s

Max time network

245s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\System.dll,#1

Signatures

Program crash

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Windows\SysWOW64\rundll32.exe

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\rundll32.exe N/A

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\System.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\System.dll,#1

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2280 -s 228

Network

N/A

Files

N/A