Malware Analysis Report

2024-12-07 14:04

Sample ID 241112-pbr9taseka
Target 4ad4bb99aa68ac6d5828c71c3f3d5d2983ead0626fd77aba7bb98de727a4b90b
SHA256 4ad4bb99aa68ac6d5828c71c3f3d5d2983ead0626fd77aba7bb98de727a4b90b
Tags
agenttesla discovery keylogger spyware stealer trojan
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

4ad4bb99aa68ac6d5828c71c3f3d5d2983ead0626fd77aba7bb98de727a4b90b

Threat Level: Known bad

The file 4ad4bb99aa68ac6d5828c71c3f3d5d2983ead0626fd77aba7bb98de727a4b90b was found to be: Known bad.

Malicious Activity Summary

agenttesla discovery keylogger spyware stealer trojan

Agenttesla family

AgentTesla

Reads user/profile data of web browsers

Reads WinSCP keys stored on the system

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

Legitimate hosting services abused for malware hosting/C2

Suspicious use of NtSetInformationThreadHideFromDebugger

Suspicious use of SetThreadContext

Suspicious use of NtCreateThreadExHideFromDebugger

Drops file in Program Files directory

Program crash

Unsigned PE

System Location Discovery: System Language Discovery

Enumerates physical storage devices

Suspicious use of WriteProcessMemory

Suspicious use of AdjustPrivilegeToken

Suspicious behavior: MapViewOfSection

Suspicious behavior: EnumeratesProcesses

Suspicious use of SetWindowsHookEx

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-12 12:09

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-11-12 12:09

Reported

2024-11-12 12:12

Platform

win7-20240729-en

Max time kernel

140s

Max time network

140s

Command Line

"C:\Users\Admin\AppData\Local\Temp\4ad4bb99aa68ac6d5828c71c3f3d5d2983ead0626fd77aba7bb98de727a4b90b.exe"

Signatures

AgentTesla

keylogger trojan stealer spyware agenttesla

Agenttesla family

agenttesla

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

Legitimate hosting services abused for malware hosting/C2

Description Indicator Process Target
N/A drive.google.com N/A N/A
N/A drive.google.com N/A N/A

Looks up external IP address via web service

Description Indicator Process Target
N/A api.ipify.org N/A N/A
N/A api.ipify.org N/A N/A

Suspicious use of NtCreateThreadExHideFromDebugger

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\4ad4bb99aa68ac6d5828c71c3f3d5d2983ead0626fd77aba7bb98de727a4b90b.exe N/A

Drops file in Program Files directory

Description Indicator Process Target
File opened for modification C:\Program Files (x86)\Common Files\brisantgranatens\baegersvamp.For C:\Users\Admin\AppData\Local\Temp\4ad4bb99aa68ac6d5828c71c3f3d5d2983ead0626fd77aba7bb98de727a4b90b.exe N/A
File opened for modification C:\Program Files (x86)\Common Files\Azonic255\lithoclase.ini C:\Users\Admin\AppData\Local\Temp\4ad4bb99aa68ac6d5828c71c3f3d5d2983ead0626fd77aba7bb98de727a4b90b.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\4ad4bb99aa68ac6d5828c71c3f3d5d2983ead0626fd77aba7bb98de727a4b90b.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\4ad4bb99aa68ac6d5828c71c3f3d5d2983ead0626fd77aba7bb98de727a4b90b.exe N/A

Suspicious behavior: MapViewOfSection

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\4ad4bb99aa68ac6d5828c71c3f3d5d2983ead0626fd77aba7bb98de727a4b90b.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\4ad4bb99aa68ac6d5828c71c3f3d5d2983ead0626fd77aba7bb98de727a4b90b.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\4ad4bb99aa68ac6d5828c71c3f3d5d2983ead0626fd77aba7bb98de727a4b90b.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2076 wrote to memory of 2492 N/A C:\Users\Admin\AppData\Local\Temp\4ad4bb99aa68ac6d5828c71c3f3d5d2983ead0626fd77aba7bb98de727a4b90b.exe C:\Users\Admin\AppData\Local\Temp\4ad4bb99aa68ac6d5828c71c3f3d5d2983ead0626fd77aba7bb98de727a4b90b.exe
PID 2076 wrote to memory of 2492 N/A C:\Users\Admin\AppData\Local\Temp\4ad4bb99aa68ac6d5828c71c3f3d5d2983ead0626fd77aba7bb98de727a4b90b.exe C:\Users\Admin\AppData\Local\Temp\4ad4bb99aa68ac6d5828c71c3f3d5d2983ead0626fd77aba7bb98de727a4b90b.exe
PID 2076 wrote to memory of 2492 N/A C:\Users\Admin\AppData\Local\Temp\4ad4bb99aa68ac6d5828c71c3f3d5d2983ead0626fd77aba7bb98de727a4b90b.exe C:\Users\Admin\AppData\Local\Temp\4ad4bb99aa68ac6d5828c71c3f3d5d2983ead0626fd77aba7bb98de727a4b90b.exe
PID 2076 wrote to memory of 2492 N/A C:\Users\Admin\AppData\Local\Temp\4ad4bb99aa68ac6d5828c71c3f3d5d2983ead0626fd77aba7bb98de727a4b90b.exe C:\Users\Admin\AppData\Local\Temp\4ad4bb99aa68ac6d5828c71c3f3d5d2983ead0626fd77aba7bb98de727a4b90b.exe
PID 2076 wrote to memory of 2492 N/A C:\Users\Admin\AppData\Local\Temp\4ad4bb99aa68ac6d5828c71c3f3d5d2983ead0626fd77aba7bb98de727a4b90b.exe C:\Users\Admin\AppData\Local\Temp\4ad4bb99aa68ac6d5828c71c3f3d5d2983ead0626fd77aba7bb98de727a4b90b.exe
PID 2076 wrote to memory of 2492 N/A C:\Users\Admin\AppData\Local\Temp\4ad4bb99aa68ac6d5828c71c3f3d5d2983ead0626fd77aba7bb98de727a4b90b.exe C:\Users\Admin\AppData\Local\Temp\4ad4bb99aa68ac6d5828c71c3f3d5d2983ead0626fd77aba7bb98de727a4b90b.exe

Processes

C:\Users\Admin\AppData\Local\Temp\4ad4bb99aa68ac6d5828c71c3f3d5d2983ead0626fd77aba7bb98de727a4b90b.exe

"C:\Users\Admin\AppData\Local\Temp\4ad4bb99aa68ac6d5828c71c3f3d5d2983ead0626fd77aba7bb98de727a4b90b.exe"

C:\Users\Admin\AppData\Local\Temp\4ad4bb99aa68ac6d5828c71c3f3d5d2983ead0626fd77aba7bb98de727a4b90b.exe

"C:\Users\Admin\AppData\Local\Temp\4ad4bb99aa68ac6d5828c71c3f3d5d2983ead0626fd77aba7bb98de727a4b90b.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 drive.google.com udp
GB 142.250.187.206:443 drive.google.com tcp
US 8.8.8.8:53 c.pki.goog udp
GB 142.250.187.227:80 c.pki.goog tcp
US 8.8.8.8:53 o.pki.goog udp
GB 142.250.187.227:80 o.pki.goog tcp
US 8.8.8.8:53 drive.usercontent.google.com udp
GB 172.217.16.225:443 drive.usercontent.google.com tcp
US 8.8.8.8:53 api.ipify.org udp
US 104.26.12.205:443 api.ipify.org tcp
US 8.8.8.8:53 www.microsoft.com udp
US 23.192.22.93:80 www.microsoft.com tcp
US 8.8.8.8:53 crl.microsoft.com udp
GB 2.19.117.22:80 crl.microsoft.com tcp

Files

\Users\Admin\AppData\Local\Temp\nsdAAE1.tmp\System.dll

MD5 d6f54d2cefdf58836805796f55bfc846
SHA1 b980addc1a755b968dd5799179d3b4f1c2de9d2d
SHA256 f917aef484d1fbb4d723b2e2d3045cb6f5f664e61fbb3d5c577bd1c215de55d9
SHA512 ce67da936a93d46ef7e81abc8276787c82fd844c03630ba18afc3528c7e420c3228bfe82aeda083bb719f2d1314afae913362abd1e220cb364606519690d45db

memory/2076-16-0x0000000077651000-0x0000000077752000-memory.dmp

memory/2076-17-0x0000000077650000-0x00000000777F9000-memory.dmp

memory/2492-18-0x0000000077650000-0x00000000777F9000-memory.dmp

memory/2492-21-0x0000000000820000-0x0000000001882000-memory.dmp

memory/2492-39-0x0000000000820000-0x0000000001882000-memory.dmp

memory/2492-40-0x0000000000820000-0x0000000000860000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-12 12:09

Reported

2024-11-12 12:12

Platform

win10v2004-20241007-en

Max time kernel

143s

Max time network

144s

Command Line

"C:\Users\Admin\AppData\Local\Temp\4ad4bb99aa68ac6d5828c71c3f3d5d2983ead0626fd77aba7bb98de727a4b90b.exe"

Signatures

AgentTesla

keylogger trojan stealer spyware agenttesla

Agenttesla family

agenttesla

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

Legitimate hosting services abused for malware hosting/C2

Description Indicator Process Target
N/A drive.google.com N/A N/A
N/A drive.google.com N/A N/A

Looks up external IP address via web service

Description Indicator Process Target
N/A api.ipify.org N/A N/A
N/A api.ipify.org N/A N/A

Suspicious use of NtCreateThreadExHideFromDebugger

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\4ad4bb99aa68ac6d5828c71c3f3d5d2983ead0626fd77aba7bb98de727a4b90b.exe N/A

Drops file in Program Files directory

Description Indicator Process Target
File opened for modification C:\Program Files (x86)\Common Files\brisantgranatens\baegersvamp.For C:\Users\Admin\AppData\Local\Temp\4ad4bb99aa68ac6d5828c71c3f3d5d2983ead0626fd77aba7bb98de727a4b90b.exe N/A
File opened for modification C:\Program Files (x86)\Common Files\Azonic255\lithoclase.ini C:\Users\Admin\AppData\Local\Temp\4ad4bb99aa68ac6d5828c71c3f3d5d2983ead0626fd77aba7bb98de727a4b90b.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\4ad4bb99aa68ac6d5828c71c3f3d5d2983ead0626fd77aba7bb98de727a4b90b.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\4ad4bb99aa68ac6d5828c71c3f3d5d2983ead0626fd77aba7bb98de727a4b90b.exe N/A

Suspicious behavior: MapViewOfSection

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\4ad4bb99aa68ac6d5828c71c3f3d5d2983ead0626fd77aba7bb98de727a4b90b.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\4ad4bb99aa68ac6d5828c71c3f3d5d2983ead0626fd77aba7bb98de727a4b90b.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\4ad4bb99aa68ac6d5828c71c3f3d5d2983ead0626fd77aba7bb98de727a4b90b.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\4ad4bb99aa68ac6d5828c71c3f3d5d2983ead0626fd77aba7bb98de727a4b90b.exe

"C:\Users\Admin\AppData\Local\Temp\4ad4bb99aa68ac6d5828c71c3f3d5d2983ead0626fd77aba7bb98de727a4b90b.exe"

C:\Users\Admin\AppData\Local\Temp\4ad4bb99aa68ac6d5828c71c3f3d5d2983ead0626fd77aba7bb98de727a4b90b.exe

"C:\Users\Admin\AppData\Local\Temp\4ad4bb99aa68ac6d5828c71c3f3d5d2983ead0626fd77aba7bb98de727a4b90b.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 88.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 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 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 drive.google.com udp
GB 216.58.213.14:443 drive.google.com tcp
US 8.8.8.8:53 c.pki.goog udp
GB 142.250.187.227:80 c.pki.goog tcp
US 8.8.8.8:53 o.pki.goog udp
GB 142.250.187.227:80 o.pki.goog tcp
US 8.8.8.8:53 14.213.58.216.in-addr.arpa udp
US 8.8.8.8:53 227.187.250.142.in-addr.arpa udp
US 8.8.8.8:53 drive.usercontent.google.com udp
GB 172.217.16.225:443 drive.usercontent.google.com tcp
US 8.8.8.8:53 225.16.217.172.in-addr.arpa udp
US 8.8.8.8:53 api.ipify.org udp
US 172.67.74.152:443 api.ipify.org tcp
US 8.8.8.8:53 152.74.67.172.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 98.117.19.2.in-addr.arpa udp
US 8.8.8.8:53 48.229.111.52.in-addr.arpa udp

Files

C:\Users\Admin\AppData\Local\Temp\nst82FD.tmp\System.dll

MD5 d6f54d2cefdf58836805796f55bfc846
SHA1 b980addc1a755b968dd5799179d3b4f1c2de9d2d
SHA256 f917aef484d1fbb4d723b2e2d3045cb6f5f664e61fbb3d5c577bd1c215de55d9
SHA512 ce67da936a93d46ef7e81abc8276787c82fd844c03630ba18afc3528c7e420c3228bfe82aeda083bb719f2d1314afae913362abd1e220cb364606519690d45db

memory/1984-15-0x0000000077791000-0x00000000778B1000-memory.dmp

memory/1984-16-0x00000000743E5000-0x00000000743E6000-memory.dmp

memory/2688-17-0x0000000077791000-0x00000000778B1000-memory.dmp

memory/2688-18-0x0000000077818000-0x0000000077819000-memory.dmp

memory/2688-19-0x0000000077835000-0x0000000077836000-memory.dmp

memory/2688-32-0x0000000000820000-0x0000000001A74000-memory.dmp

memory/2688-34-0x0000000077791000-0x00000000778B1000-memory.dmp

memory/2688-33-0x0000000000820000-0x0000000001A74000-memory.dmp

memory/2688-35-0x000000007268E000-0x000000007268F000-memory.dmp

memory/2688-36-0x0000000000820000-0x0000000000860000-memory.dmp

memory/2688-37-0x000000003A5D0000-0x000000003AB74000-memory.dmp

memory/2688-38-0x000000003AB80000-0x000000003ABE6000-memory.dmp

memory/2688-39-0x0000000072680000-0x0000000072E30000-memory.dmp

memory/2688-40-0x000000003B210000-0x000000003B260000-memory.dmp

memory/2688-41-0x000000003B260000-0x000000003B2F2000-memory.dmp

memory/2688-42-0x000000003B4C0000-0x000000003B4CA000-memory.dmp

memory/2688-44-0x000000007268E000-0x000000007268F000-memory.dmp

memory/2688-45-0x0000000072680000-0x0000000072E30000-memory.dmp

Analysis: behavioral3

Detonation Overview

Submitted

2024-11-12 12:09

Reported

2024-11-12 12:12

Platform

win7-20240729-en

Max time kernel

16s

Max time network

16s

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 2144 -s 220

Network

N/A

Files

N/A

Analysis: behavioral4

Detonation Overview

Submitted

2024-11-12 12:09

Reported

2024-11-12 12:12

Platform

win10v2004-20241007-en

Max time kernel

95s

Max time network

141s

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 4892 wrote to memory of 4384 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4892 wrote to memory of 4384 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4892 wrote to memory of 4384 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 428 -p 4384 -ip 4384

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4384 -s 612

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 68.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 149.220.183.52.in-addr.arpa udp
US 8.8.8.8:53 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 212.20.149.52.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 100.117.19.2.in-addr.arpa udp
US 8.8.8.8:53 83.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 22.236.111.52.in-addr.arpa udp

Files

N/A