Malware Analysis Report

2024-12-06 03:27

Sample ID 241030-bpbx4atemp
Target 30102024_0118_29102024_Bestellung.7z
SHA256 b13417ae29a0b5dc10cb8176006034c61d41fd9e20037c4023ab514b193fa69a
Tags
discovery guloader downloader
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: behavioral3

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral4

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

b13417ae29a0b5dc10cb8176006034c61d41fd9e20037c4023ab514b193fa69a

Threat Level: Known bad

The file 30102024_0118_29102024_Bestellung.7z was found to be: Known bad.

Malicious Activity Summary

discovery guloader downloader

Guloader family

Guloader,Cloudeye

Loads dropped DLL

Suspicious use of NtCreateThreadExHideFromDebugger

Suspicious use of NtSetInformationThreadHideFromDebugger

Suspicious use of SetThreadContext

Drops file in Program Files directory

Drops file in Windows directory

Program crash

Unsigned PE

Enumerates physical storage devices

System Location Discovery: System Language Discovery

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

Suspicious behavior: MapViewOfSection

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-10-30 01:18

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-10-30 01:18

Reported

2024-10-30 01:23

Platform

win7-20240903-en

Max time kernel

119s

Max time network

120s

Command Line

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

Signatures

Loads dropped DLL

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

Drops file in Program Files directory

Description Indicator Process Target
File opened for modification C:\Program Files (x86)\Common Files\customization.rom C:\Users\Admin\AppData\Local\Temp\Bestellung.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File opened for modification C:\Windows\resources\primy.ini C:\Users\Admin\AppData\Local\Temp\Bestellung.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\Bestellung.exe N/A

Processes

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

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

Network

N/A

Files

C:\Windows\Resources\primy.ini

MD5 76d9175a3db7407eb0bfc3c07ddcd9d2
SHA1 72071127e9a44935cb02650ed715ccaf6a8f8418
SHA256 1f7119996dd17af05bf05e497104715bbbc3909676afa4329fbd59502be1a1a5
SHA512 5032dab71e70a4bd1dad2f5cf9380e0097be7993bc46886fed6e4bdd8781f2b10d31338d90d0dc5804665bda2cbfe93f1172250e1a8ab7c9118baf9f156e3c69

\Users\Admin\AppData\Local\Temp\nsd6826.tmp\System.dll

MD5 192639861e3dc2dc5c08bb8f8c7260d5
SHA1 58d30e460609e22fa0098bc27d928b689ef9af78
SHA256 23d618a0293c78ce00f7c6e6dd8b8923621da7dd1f63a070163ef4c0ec3033d6
SHA512 6e573d8b2ef6ed719e271fd0b2fd9cd451f61fc9a9459330108d6d7a65a0f64016303318cad787aa1d5334ba670d8f1c7c13074e1be550b4a316963ecc465cdc

memory/2920-23239-0x0000000003310000-0x00000000063F2000-memory.dmp

memory/2920-23240-0x0000000003310000-0x00000000063F2000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-10-30 01:18

Reported

2024-10-30 01:24

Platform

win10v2004-20241007-en

Max time kernel

150s

Max time network

274s

Command Line

"C:\Users\Admin\AppData\Local\Temp\Bestellung.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\Bestellung.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\Bestellung.exe N/A

Suspicious use of NtCreateThreadExHideFromDebugger

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

Suspicious use of NtSetInformationThreadHideFromDebugger

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

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 2096 set thread context of 1048 N/A C:\Users\Admin\AppData\Local\Temp\Bestellung.exe C:\Users\Admin\AppData\Local\Temp\Bestellung.exe

Drops file in Program Files directory

Description Indicator Process Target
File opened for modification C:\Program Files (x86)\Common Files\customization.rom C:\Users\Admin\AppData\Local\Temp\Bestellung.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File opened for modification C:\Windows\resources\primy.ini C:\Users\Admin\AppData\Local\Temp\Bestellung.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\Bestellung.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\Bestellung.exe N/A

Suspicious behavior: MapViewOfSection

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

Processes

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

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

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

"C:\Users\Admin\AppData\Local\Temp\Bestellung.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 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 71.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 150.171.27.10:443 g.bing.com tcp
US 8.8.8.8:53 10.27.171.150.in-addr.arpa udp
US 8.8.8.8:53 55.36.223.20.in-addr.arpa udp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 200.163.202.172.in-addr.arpa udp
US 8.8.8.8:53 241.42.69.40.in-addr.arpa udp
US 8.8.8.8:53 98.209.201.84.in-addr.arpa udp
US 8.8.8.8:53 kmsaksesuar.com udp
TR 46.28.239.165:443 kmsaksesuar.com tcp
US 8.8.8.8:53 165.239.28.46.in-addr.arpa udp
US 8.8.8.8:53 61.45.26.184.in-addr.arpa udp
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp
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 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 59.189.79.40.in-addr.arpa udp

Files

C:\Windows\Resources\primy.ini

MD5 76d9175a3db7407eb0bfc3c07ddcd9d2
SHA1 72071127e9a44935cb02650ed715ccaf6a8f8418
SHA256 1f7119996dd17af05bf05e497104715bbbc3909676afa4329fbd59502be1a1a5
SHA512 5032dab71e70a4bd1dad2f5cf9380e0097be7993bc46886fed6e4bdd8781f2b10d31338d90d0dc5804665bda2cbfe93f1172250e1a8ab7c9118baf9f156e3c69

C:\Users\Admin\AppData\Local\Temp\nsjAA0C.tmp\System.dll

MD5 192639861e3dc2dc5c08bb8f8c7260d5
SHA1 58d30e460609e22fa0098bc27d928b689ef9af78
SHA256 23d618a0293c78ce00f7c6e6dd8b8923621da7dd1f63a070163ef4c0ec3033d6
SHA512 6e573d8b2ef6ed719e271fd0b2fd9cd451f61fc9a9459330108d6d7a65a0f64016303318cad787aa1d5334ba670d8f1c7c13074e1be550b4a316963ecc465cdc

memory/2096-23237-0x0000000002DE0000-0x0000000005EC2000-memory.dmp

memory/2096-23238-0x0000000002DE0000-0x0000000005EC2000-memory.dmp

memory/2096-23239-0x0000000077671000-0x0000000077791000-memory.dmp

memory/2096-23240-0x0000000074365000-0x0000000074366000-memory.dmp

memory/1048-23241-0x0000000000400000-0x0000000001654000-memory.dmp

memory/2096-23242-0x0000000002DE0000-0x0000000005EC2000-memory.dmp

memory/1048-23243-0x0000000001660000-0x0000000004742000-memory.dmp

memory/1048-23244-0x0000000000400000-0x0000000001654000-memory.dmp

memory/1048-23248-0x0000000001660000-0x0000000004742000-memory.dmp

memory/1048-23249-0x0000000000400000-0x0000000001654000-memory.dmp

memory/1048-23250-0x0000000000400000-0x0000000001654000-memory.dmp

memory/1048-23251-0x0000000000400000-0x0000000001654000-memory.dmp

memory/1048-23254-0x0000000000400000-0x0000000001654000-memory.dmp

memory/1048-23255-0x0000000001660000-0x0000000004742000-memory.dmp

Analysis: behavioral3

Detonation Overview

Submitted

2024-10-30 01:18

Reported

2024-10-30 01:24

Platform

win7-20240903-en

Max time kernel

121s

Max time network

123s

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 2340 -s 220

Network

N/A

Files

N/A

Analysis: behavioral4

Detonation Overview

Submitted

2024-10-30 01:18

Reported

2024-10-30 01:23

Platform

win10v2004-20241007-en

Max time kernel

134s

Max time network

205s

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 4376 wrote to memory of 1416 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4376 wrote to memory of 1416 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4376 wrote to memory of 1416 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 1416 -ip 1416

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1416 -s 612

Network

Country Destination Domain Proto
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 8.8.8.8:53 53.210.109.20.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 55.36.223.20.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 10.28.171.150.in-addr.arpa udp

Files

N/A