Malware Analysis Report

2025-04-03 14:29

Sample ID 240930-knq53awbnj
Target Confirmation transfer AGS # 22-0024.exe
SHA256 8c902fc0f78ef5ae8375f02f7b48020972ea2b22fb2eb01398ac2517074ccc52
Tags
discovery guloader downloader
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral3

Detonation Overview

Command Line

Signatures

Processes

Network

Files

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 Overview

score
10/10

SHA256

8c902fc0f78ef5ae8375f02f7b48020972ea2b22fb2eb01398ac2517074ccc52

Threat Level: Known bad

The file Confirmation transfer AGS # 22-0024.exe was found to be: Known bad.

Malicious Activity Summary

discovery guloader downloader

Guloader,Cloudeye

Loads dropped DLL

Suspicious use of NtSetInformationThreadHideFromDebugger

Suspicious use of SetThreadContext

Drops file in Windows directory

System Location Discovery: System Language Discovery

Unsigned PE

Enumerates physical storage devices

Program crash

Suspicious use of WriteProcessMemory

Suspicious behavior: MapViewOfSection

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-09-30 08:45

Signatures

Unsigned PE

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

Analysis: behavioral3

Detonation Overview

Submitted

2024-09-30 08:45

Reported

2024-09-30 08:47

Platform

win7-20240903-en

Max time kernel

13s

Max time network

19s

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 2924 -s 228

Network

N/A

Files

N/A

Analysis: behavioral4

Detonation Overview

Submitted

2024-09-30 08:45

Reported

2024-09-30 08:47

Platform

win10v2004-20240802-en

Max time kernel

94s

Max time network

99s

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 2480 wrote to memory of 1156 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2480 wrote to memory of 1156 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2480 wrote to memory of 1156 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 416 -p 1156 -ip 1156

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1156 -s 612

Network

Country Destination Domain Proto
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 68.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 97.17.167.52.in-addr.arpa udp
US 8.8.8.8:53 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
US 8.8.8.8:53 241.42.69.40.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 88.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 31.243.111.52.in-addr.arpa udp

Files

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-09-30 08:45

Reported

2024-09-30 08:47

Platform

win7-20240903-en

Max time kernel

149s

Max time network

147s

Command Line

"C:\Users\Admin\AppData\Local\Temp\Confirmation transfer AGS # 22-0024.exe"

Signatures

Guloader,Cloudeye

downloader guloader

Suspicious use of NtSetInformationThreadHideFromDebugger

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\Confirmation transfer AGS # 22-0024.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\Confirmation transfer AGS # 22-0024.exe N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 3056 set thread context of 2364 N/A C:\Users\Admin\AppData\Local\Temp\Confirmation transfer AGS # 22-0024.exe C:\Users\Admin\AppData\Local\Temp\Confirmation transfer AGS # 22-0024.exe

Drops file in Windows directory

Description Indicator Process Target
File opened for modification C:\Windows\resources\0409\Mancus.phi C:\Users\Admin\AppData\Local\Temp\Confirmation transfer AGS # 22-0024.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\Confirmation transfer AGS # 22-0024.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\Confirmation transfer AGS # 22-0024.exe N/A

Suspicious behavior: MapViewOfSection

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\Confirmation transfer AGS # 22-0024.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\Confirmation transfer AGS # 22-0024.exe

"C:\Users\Admin\AppData\Local\Temp\Confirmation transfer AGS # 22-0024.exe"

C:\Users\Admin\AppData\Local\Temp\Confirmation transfer AGS # 22-0024.exe

"C:\Users\Admin\AppData\Local\Temp\Confirmation transfer AGS # 22-0024.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 wphosting.in udp
FI 95.217.165.68:80 wphosting.in tcp

Files

\Users\Admin\AppData\Local\Temp\nstA6FA.tmp\System.dll

MD5 ee260c45e97b62a5e42f17460d406068
SHA1 df35f6300a03c4d3d3bd69752574426296b78695
SHA256 e94a1f7bcd7e0d532b660d0af468eb3321536c3efdca265e61f9ec174b1aef27
SHA512 a98f350d17c9057f33e5847462a87d59cbf2aaeda7f6299b0d49bb455e484ce4660c12d2eb8c4a0d21df523e729222bbd6c820bf25b081bc7478152515b414b3

memory/3056-15-0x0000000003E30000-0x0000000005987000-memory.dmp

memory/3056-16-0x0000000077541000-0x0000000077642000-memory.dmp

memory/3056-17-0x0000000077540000-0x00000000776E9000-memory.dmp

memory/3056-18-0x0000000003E30000-0x0000000005987000-memory.dmp

memory/2364-19-0x0000000077540000-0x00000000776E9000-memory.dmp

memory/2364-20-0x0000000000470000-0x00000000014D2000-memory.dmp

memory/3056-26-0x0000000003E30000-0x0000000005987000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-09-30 08:45

Reported

2024-09-30 08:47

Platform

win10v2004-20240802-en

Max time kernel

143s

Max time network

149s

Command Line

"C:\Users\Admin\AppData\Local\Temp\Confirmation transfer AGS # 22-0024.exe"

Signatures

Guloader,Cloudeye

downloader guloader

Suspicious use of NtSetInformationThreadHideFromDebugger

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\Confirmation transfer AGS # 22-0024.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\Confirmation transfer AGS # 22-0024.exe N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 4736 set thread context of 4772 N/A C:\Users\Admin\AppData\Local\Temp\Confirmation transfer AGS # 22-0024.exe C:\Users\Admin\AppData\Local\Temp\Confirmation transfer AGS # 22-0024.exe

Drops file in Windows directory

Description Indicator Process Target
File opened for modification C:\Windows\resources\0409\Mancus.phi C:\Users\Admin\AppData\Local\Temp\Confirmation transfer AGS # 22-0024.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\Confirmation transfer AGS # 22-0024.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\Confirmation transfer AGS # 22-0024.exe N/A

Suspicious behavior: MapViewOfSection

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\Confirmation transfer AGS # 22-0024.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\Confirmation transfer AGS # 22-0024.exe

"C:\Users\Admin\AppData\Local\Temp\Confirmation transfer AGS # 22-0024.exe"

C:\Users\Admin\AppData\Local\Temp\Confirmation transfer AGS # 22-0024.exe

"C:\Users\Admin\AppData\Local\Temp\Confirmation transfer AGS # 22-0024.exe"

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 88.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 73.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 wphosting.in udp
FI 95.217.165.68:80 wphosting.in tcp
US 8.8.8.8:53 68.165.217.95.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 241.42.69.40.in-addr.arpa udp
US 8.8.8.8:53 75.117.19.2.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp

Files

C:\Users\Admin\AppData\Local\Temp\nsi75BD.tmp\System.dll

MD5 ee260c45e97b62a5e42f17460d406068
SHA1 df35f6300a03c4d3d3bd69752574426296b78695
SHA256 e94a1f7bcd7e0d532b660d0af468eb3321536c3efdca265e61f9ec174b1aef27
SHA512 a98f350d17c9057f33e5847462a87d59cbf2aaeda7f6299b0d49bb455e484ce4660c12d2eb8c4a0d21df523e729222bbd6c820bf25b081bc7478152515b414b3

memory/4736-13-0x0000000004B30000-0x0000000006687000-memory.dmp

memory/4736-17-0x0000000010000000-0x0000000010006000-memory.dmp

memory/4736-16-0x0000000010004000-0x0000000010005000-memory.dmp

memory/4736-15-0x0000000077B71000-0x0000000077C91000-memory.dmp

memory/4736-14-0x0000000004B30000-0x0000000006687000-memory.dmp

memory/4772-18-0x00000000016D0000-0x0000000003227000-memory.dmp

memory/4772-19-0x0000000077BF8000-0x0000000077BF9000-memory.dmp

memory/4772-20-0x00000000016D0000-0x0000000003227000-memory.dmp

memory/4772-21-0x0000000077C15000-0x0000000077C16000-memory.dmp

memory/4772-22-0x0000000000470000-0x00000000016C4000-memory.dmp

memory/4772-23-0x0000000077B71000-0x0000000077C91000-memory.dmp

memory/4736-29-0x0000000004B30000-0x0000000006687000-memory.dmp