Malware Analysis Report

2024-11-15 10:22

Sample ID 241106-b8bfnssfnf
Target 0a46b6255876b15fee60b3e9b552c02a050429604ef697604c6ee60873dd13c9
SHA256 0a46b6255876b15fee60b3e9b552c02a050429604ef697604c6ee60873dd13c9
Tags
discovery agenttesla guloader downloader keylogger spyware stealer trojan
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

0a46b6255876b15fee60b3e9b552c02a050429604ef697604c6ee60873dd13c9

Threat Level: Known bad

The file 0a46b6255876b15fee60b3e9b552c02a050429604ef697604c6ee60873dd13c9 was found to be: Known bad.

Malicious Activity Summary

discovery agenttesla guloader downloader keylogger spyware stealer trojan

Agenttesla family

Guloader family

AgentTesla

Guloader,Cloudeye

Reads WinSCP keys stored on the system

Reads user/profile data of web browsers

Reads user/profile data of local email clients

Reads data files stored by FTP clients

Loads dropped DLL

Looks up external IP address via web service

Suspicious use of NtCreateThreadExHideFromDebugger

Suspicious use of NtSetInformationThreadHideFromDebugger

Suspicious use of SetThreadContext

Program crash

Enumerates physical storage devices

System Location Discovery: System Language Discovery

Unsigned PE

Suspicious use of WriteProcessMemory

Suspicious use of AdjustPrivilegeToken

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: MapViewOfSection

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-06 01:48

Signatures

Unsigned PE

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

2024-11-06 01:48

Reported

2024-11-06 01:50

Platform

win10v2004-20241007-en

Max time kernel

147s

Max time network

128s

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 1692 wrote to memory of 1428 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1692 wrote to memory of 1428 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1692 wrote to memory of 1428 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 1428 -ip 1428

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1428 -s 612

Network

Country Destination Domain Proto
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 150.171.28.10:443 g.bing.com tcp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 22.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 10.28.171.150.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 232.168.11.51.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 103.209.201.84.in-addr.arpa udp
US 8.8.8.8:53 88.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 21.236.111.52.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp

Files

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-11-06 01:48

Reported

2024-11-06 01:51

Platform

win7-20240903-en

Max time kernel

149s

Max time network

153s

Command Line

"C:\Users\Admin\AppData\Local\Temp\0a46b6255876b15fee60b3e9b552c02a050429604ef697604c6ee60873dd13c9.exe"

Signatures

AgentTesla

keylogger trojan stealer spyware agenttesla

Agenttesla family

agenttesla

Guloader family

guloader

Guloader,Cloudeye

downloader guloader

Reads WinSCP keys stored on the system

spyware stealer

Reads data files stored by FTP clients

spyware stealer

Reads user/profile data of local email clients

spyware stealer

Reads user/profile data of web browsers

spyware stealer

Looks up external IP address via web service

Description Indicator Process Target
N/A ip-api.com N/A N/A

Suspicious use of NtCreateThreadExHideFromDebugger

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\0a46b6255876b15fee60b3e9b552c02a050429604ef697604c6ee60873dd13c9.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\0a46b6255876b15fee60b3e9b552c02a050429604ef697604c6ee60873dd13c9.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\0a46b6255876b15fee60b3e9b552c02a050429604ef697604c6ee60873dd13c9.exe N/A

Suspicious behavior: MapViewOfSection

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\0a46b6255876b15fee60b3e9b552c02a050429604ef697604c6ee60873dd13c9.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\0a46b6255876b15fee60b3e9b552c02a050429604ef697604c6ee60873dd13c9.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2380 wrote to memory of 2296 N/A C:\Users\Admin\AppData\Local\Temp\0a46b6255876b15fee60b3e9b552c02a050429604ef697604c6ee60873dd13c9.exe C:\Users\Admin\AppData\Local\Temp\0a46b6255876b15fee60b3e9b552c02a050429604ef697604c6ee60873dd13c9.exe
PID 2380 wrote to memory of 2296 N/A C:\Users\Admin\AppData\Local\Temp\0a46b6255876b15fee60b3e9b552c02a050429604ef697604c6ee60873dd13c9.exe C:\Users\Admin\AppData\Local\Temp\0a46b6255876b15fee60b3e9b552c02a050429604ef697604c6ee60873dd13c9.exe
PID 2380 wrote to memory of 2296 N/A C:\Users\Admin\AppData\Local\Temp\0a46b6255876b15fee60b3e9b552c02a050429604ef697604c6ee60873dd13c9.exe C:\Users\Admin\AppData\Local\Temp\0a46b6255876b15fee60b3e9b552c02a050429604ef697604c6ee60873dd13c9.exe
PID 2380 wrote to memory of 2296 N/A C:\Users\Admin\AppData\Local\Temp\0a46b6255876b15fee60b3e9b552c02a050429604ef697604c6ee60873dd13c9.exe C:\Users\Admin\AppData\Local\Temp\0a46b6255876b15fee60b3e9b552c02a050429604ef697604c6ee60873dd13c9.exe
PID 2380 wrote to memory of 2296 N/A C:\Users\Admin\AppData\Local\Temp\0a46b6255876b15fee60b3e9b552c02a050429604ef697604c6ee60873dd13c9.exe C:\Users\Admin\AppData\Local\Temp\0a46b6255876b15fee60b3e9b552c02a050429604ef697604c6ee60873dd13c9.exe
PID 2380 wrote to memory of 2296 N/A C:\Users\Admin\AppData\Local\Temp\0a46b6255876b15fee60b3e9b552c02a050429604ef697604c6ee60873dd13c9.exe C:\Users\Admin\AppData\Local\Temp\0a46b6255876b15fee60b3e9b552c02a050429604ef697604c6ee60873dd13c9.exe

Processes

C:\Users\Admin\AppData\Local\Temp\0a46b6255876b15fee60b3e9b552c02a050429604ef697604c6ee60873dd13c9.exe

"C:\Users\Admin\AppData\Local\Temp\0a46b6255876b15fee60b3e9b552c02a050429604ef697604c6ee60873dd13c9.exe"

C:\Users\Admin\AppData\Local\Temp\0a46b6255876b15fee60b3e9b552c02a050429604ef697604c6ee60873dd13c9.exe

"C:\Users\Admin\AppData\Local\Temp\0a46b6255876b15fee60b3e9b552c02a050429604ef697604c6ee60873dd13c9.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 hublore.in udp
US 45.43.14.134:80 hublore.in tcp
US 8.8.8.8:53 ip-api.com udp
US 208.95.112.1:80 ip-api.com tcp

Files

\Users\Admin\AppData\Local\Temp\nsdBB56.tmp\System.dll

MD5 fc3772787eb239ef4d0399680dcc4343
SHA1 db2fa99ec967178cd8057a14a428a8439a961a73
SHA256 9b93c61c9d63ef8ec80892cc0e4a0877966dca9b0c3eb85555cebd2ddf4d6eed
SHA512 79e491ca4591a5da70116114b7fbb66ee15a0532386035e980c9dfe7afb59b1f9d9c758891e25bfb45c36b07afd3e171bac37a86c887387ef0e80b1eaf296c89

memory/2380-25-0x0000000003FA0000-0x0000000005F64000-memory.dmp

memory/2380-26-0x0000000077411000-0x0000000077512000-memory.dmp

memory/2380-27-0x0000000077410000-0x00000000775B9000-memory.dmp

memory/2296-29-0x0000000077410000-0x00000000775B9000-memory.dmp

memory/2380-28-0x0000000003FA0000-0x0000000005F64000-memory.dmp

memory/2380-30-0x0000000003FA0000-0x0000000005F64000-memory.dmp

memory/2296-31-0x00000000004A0000-0x0000000001502000-memory.dmp

memory/2296-32-0x00000000004A0000-0x0000000001502000-memory.dmp

memory/2296-33-0x00000000004A0000-0x00000000004E2000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-06 01:48

Reported

2024-11-06 01:50

Platform

win10v2004-20241007-en

Max time kernel

149s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\0a46b6255876b15fee60b3e9b552c02a050429604ef697604c6ee60873dd13c9.exe"

Signatures

AgentTesla

keylogger trojan stealer spyware agenttesla

Agenttesla family

agenttesla

Guloader family

guloader

Guloader,Cloudeye

downloader guloader

Reads WinSCP keys stored on the system

spyware stealer

Reads data files stored by FTP clients

spyware stealer

Reads user/profile data of local email clients

spyware stealer

Reads user/profile data of web browsers

spyware stealer

Looks up external IP address via web service

Description Indicator Process Target
N/A ip-api.com N/A N/A

Suspicious use of NtCreateThreadExHideFromDebugger

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\0a46b6255876b15fee60b3e9b552c02a050429604ef697604c6ee60873dd13c9.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\0a46b6255876b15fee60b3e9b552c02a050429604ef697604c6ee60873dd13c9.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\0a46b6255876b15fee60b3e9b552c02a050429604ef697604c6ee60873dd13c9.exe N/A

Suspicious behavior: MapViewOfSection

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\0a46b6255876b15fee60b3e9b552c02a050429604ef697604c6ee60873dd13c9.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\0a46b6255876b15fee60b3e9b552c02a050429604ef697604c6ee60873dd13c9.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\0a46b6255876b15fee60b3e9b552c02a050429604ef697604c6ee60873dd13c9.exe

"C:\Users\Admin\AppData\Local\Temp\0a46b6255876b15fee60b3e9b552c02a050429604ef697604c6ee60873dd13c9.exe"

C:\Users\Admin\AppData\Local\Temp\0a46b6255876b15fee60b3e9b552c02a050429604ef697604c6ee60873dd13c9.exe

"C:\Users\Admin\AppData\Local\Temp\0a46b6255876b15fee60b3e9b552c02a050429604ef697604c6ee60873dd13c9.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 g.bing.com udp
US 150.171.27.10:443 g.bing.com tcp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 72.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 205.47.74.20.in-addr.arpa udp
US 8.8.8.8:53 hublore.in udp
US 45.43.14.134:80 hublore.in tcp
US 8.8.8.8:53 232.168.11.51.in-addr.arpa udp
US 8.8.8.8:53 134.14.43.45.in-addr.arpa udp
US 8.8.8.8:53 209.205.72.20.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 92.12.20.2.in-addr.arpa udp
US 8.8.8.8:53 ip-api.com udp
US 208.95.112.1:80 ip-api.com tcp
US 8.8.8.8:53 1.112.95.208.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 8.8.8.8:53 88.156.103.20.in-addr.arpa udp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp

Files

C:\Users\Admin\AppData\Local\Temp\nsw8967.tmp\System.dll

MD5 fc3772787eb239ef4d0399680dcc4343
SHA1 db2fa99ec967178cd8057a14a428a8439a961a73
SHA256 9b93c61c9d63ef8ec80892cc0e4a0877966dca9b0c3eb85555cebd2ddf4d6eed
SHA512 79e491ca4591a5da70116114b7fbb66ee15a0532386035e980c9dfe7afb59b1f9d9c758891e25bfb45c36b07afd3e171bac37a86c887387ef0e80b1eaf296c89

memory/2800-24-0x0000000004A40000-0x0000000006A04000-memory.dmp

memory/2800-25-0x0000000076F31000-0x0000000077051000-memory.dmp

memory/2800-26-0x0000000004A40000-0x0000000006A04000-memory.dmp

memory/2800-27-0x0000000010004000-0x0000000010005000-memory.dmp

memory/2800-28-0x0000000004A40000-0x0000000006A04000-memory.dmp

memory/4540-29-0x0000000001700000-0x00000000036C4000-memory.dmp

memory/4540-30-0x00000000004A0000-0x00000000016F4000-memory.dmp

memory/4540-31-0x0000000001700000-0x00000000036C4000-memory.dmp

memory/4540-35-0x00000000004A0000-0x00000000016F4000-memory.dmp

memory/4540-36-0x00000000004A0000-0x00000000004E2000-memory.dmp

memory/4540-37-0x0000000036050000-0x00000000365F4000-memory.dmp

memory/4540-38-0x0000000036600000-0x0000000036666000-memory.dmp

memory/4540-39-0x0000000036DB0000-0x0000000036E42000-memory.dmp

memory/4540-40-0x0000000036E70000-0x0000000036EC0000-memory.dmp

memory/4540-41-0x0000000036F00000-0x0000000036F0A000-memory.dmp

Analysis: behavioral3

Detonation Overview

Submitted

2024-11-06 01:48

Reported

2024-11-06 01:50

Platform

win7-20241023-en

Max time kernel

121s

Max time network

122s

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 2016 -s 224

Network

N/A

Files

N/A