Malware Analysis Report

2024-11-15 09:59

Sample ID 241111-by72wszdrh
Target cf3c06fc4ac2aa1437f095c70671e38c9b8fb7c553ee19899b3183aa11843aad
SHA256 cf3c06fc4ac2aa1437f095c70671e38c9b8fb7c553ee19899b3183aa11843aad
Tags
agenttesla guloader discovery 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: 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

cf3c06fc4ac2aa1437f095c70671e38c9b8fb7c553ee19899b3183aa11843aad

Threat Level: Known bad

The file cf3c06fc4ac2aa1437f095c70671e38c9b8fb7c553ee19899b3183aa11843aad was found to be: Known bad.

Malicious Activity Summary

agenttesla guloader discovery downloader keylogger spyware stealer trojan

Agenttesla family

Guloader,Cloudeye

AgentTesla

Guloader family

Reads user/profile data of local email clients

Reads WinSCP keys stored on the system

Loads dropped DLL

Reads data files stored by FTP clients

Reads user/profile data of web browsers

Looks up external IP address via web service

Legitimate hosting services abused for malware hosting/C2

Suspicious use of SetThreadContext

Suspicious use of NtCreateThreadExHideFromDebugger

Suspicious use of NtSetInformationThreadHideFromDebugger

Drops file in Program Files directory

System Location Discovery: System Language Discovery

Enumerates physical storage devices

Program crash

Unsigned PE

Suspicious use of AdjustPrivilegeToken

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

Suspicious use of SetWindowsHookEx

Suspicious behavior: MapViewOfSection

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-11 01:34

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-11-11 01:34

Reported

2024-11-11 01:36

Platform

win7-20241023-en

Max time kernel

141s

Max time network

142s

Command Line

"C:\Users\Admin\AppData\Local\Temp\cf3c06fc4ac2aa1437f095c70671e38c9b8fb7c553ee19899b3183aa11843aad.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

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\cf3c06fc4ac2aa1437f095c70671e38c9b8fb7c553ee19899b3183aa11843aad.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\cf3c06fc4ac2aa1437f095c70671e38c9b8fb7c553ee19899b3183aa11843aad.exe N/A
File opened for modification C:\Program Files (x86)\Common Files\Azonic255\lithoclase.ini C:\Users\Admin\AppData\Local\Temp\cf3c06fc4ac2aa1437f095c70671e38c9b8fb7c553ee19899b3183aa11843aad.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\cf3c06fc4ac2aa1437f095c70671e38c9b8fb7c553ee19899b3183aa11843aad.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\cf3c06fc4ac2aa1437f095c70671e38c9b8fb7c553ee19899b3183aa11843aad.exe N/A

Suspicious behavior: MapViewOfSection

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\cf3c06fc4ac2aa1437f095c70671e38c9b8fb7c553ee19899b3183aa11843aad.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\cf3c06fc4ac2aa1437f095c70671e38c9b8fb7c553ee19899b3183aa11843aad.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\cf3c06fc4ac2aa1437f095c70671e38c9b8fb7c553ee19899b3183aa11843aad.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3012 wrote to memory of 2868 N/A C:\Users\Admin\AppData\Local\Temp\cf3c06fc4ac2aa1437f095c70671e38c9b8fb7c553ee19899b3183aa11843aad.exe C:\Users\Admin\AppData\Local\Temp\cf3c06fc4ac2aa1437f095c70671e38c9b8fb7c553ee19899b3183aa11843aad.exe
PID 3012 wrote to memory of 2868 N/A C:\Users\Admin\AppData\Local\Temp\cf3c06fc4ac2aa1437f095c70671e38c9b8fb7c553ee19899b3183aa11843aad.exe C:\Users\Admin\AppData\Local\Temp\cf3c06fc4ac2aa1437f095c70671e38c9b8fb7c553ee19899b3183aa11843aad.exe
PID 3012 wrote to memory of 2868 N/A C:\Users\Admin\AppData\Local\Temp\cf3c06fc4ac2aa1437f095c70671e38c9b8fb7c553ee19899b3183aa11843aad.exe C:\Users\Admin\AppData\Local\Temp\cf3c06fc4ac2aa1437f095c70671e38c9b8fb7c553ee19899b3183aa11843aad.exe
PID 3012 wrote to memory of 2868 N/A C:\Users\Admin\AppData\Local\Temp\cf3c06fc4ac2aa1437f095c70671e38c9b8fb7c553ee19899b3183aa11843aad.exe C:\Users\Admin\AppData\Local\Temp\cf3c06fc4ac2aa1437f095c70671e38c9b8fb7c553ee19899b3183aa11843aad.exe
PID 3012 wrote to memory of 2868 N/A C:\Users\Admin\AppData\Local\Temp\cf3c06fc4ac2aa1437f095c70671e38c9b8fb7c553ee19899b3183aa11843aad.exe C:\Users\Admin\AppData\Local\Temp\cf3c06fc4ac2aa1437f095c70671e38c9b8fb7c553ee19899b3183aa11843aad.exe
PID 3012 wrote to memory of 2868 N/A C:\Users\Admin\AppData\Local\Temp\cf3c06fc4ac2aa1437f095c70671e38c9b8fb7c553ee19899b3183aa11843aad.exe C:\Users\Admin\AppData\Local\Temp\cf3c06fc4ac2aa1437f095c70671e38c9b8fb7c553ee19899b3183aa11843aad.exe

Processes

C:\Users\Admin\AppData\Local\Temp\cf3c06fc4ac2aa1437f095c70671e38c9b8fb7c553ee19899b3183aa11843aad.exe

"C:\Users\Admin\AppData\Local\Temp\cf3c06fc4ac2aa1437f095c70671e38c9b8fb7c553ee19899b3183aa11843aad.exe"

C:\Users\Admin\AppData\Local\Temp\cf3c06fc4ac2aa1437f095c70671e38c9b8fb7c553ee19899b3183aa11843aad.exe

"C:\Users\Admin\AppData\Local\Temp\cf3c06fc4ac2aa1437f095c70671e38c9b8fb7c553ee19899b3183aa11843aad.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 104.26.13.205:443 api.ipify.org tcp

Files

\Users\Admin\AppData\Local\Temp\nsd6DF1.tmp\System.dll

MD5 d6f54d2cefdf58836805796f55bfc846
SHA1 b980addc1a755b968dd5799179d3b4f1c2de9d2d
SHA256 f917aef484d1fbb4d723b2e2d3045cb6f5f664e61fbb3d5c577bd1c215de55d9
SHA512 ce67da936a93d46ef7e81abc8276787c82fd844c03630ba18afc3528c7e420c3228bfe82aeda083bb719f2d1314afae913362abd1e220cb364606519690d45db

memory/3012-16-0x0000000003C40000-0x0000000005AA2000-memory.dmp

memory/3012-17-0x0000000076D81000-0x0000000076E82000-memory.dmp

memory/3012-18-0x0000000076D80000-0x0000000076F29000-memory.dmp

memory/3012-19-0x0000000003C40000-0x0000000005AA2000-memory.dmp

memory/2868-20-0x0000000076D80000-0x0000000076F29000-memory.dmp

memory/3012-21-0x0000000003C40000-0x0000000005AA2000-memory.dmp

memory/2868-23-0x0000000076D80000-0x0000000076F29000-memory.dmp

memory/2868-22-0x0000000000820000-0x0000000001882000-memory.dmp

memory/2868-45-0x0000000000820000-0x0000000001882000-memory.dmp

memory/2868-46-0x0000000000820000-0x0000000000860000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-11 01:34

Reported

2024-11-11 01:36

Platform

win10v2004-20241007-en

Max time kernel

144s

Max time network

148s

Command Line

"C:\Users\Admin\AppData\Local\Temp\cf3c06fc4ac2aa1437f095c70671e38c9b8fb7c553ee19899b3183aa11843aad.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

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\cf3c06fc4ac2aa1437f095c70671e38c9b8fb7c553ee19899b3183aa11843aad.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\cf3c06fc4ac2aa1437f095c70671e38c9b8fb7c553ee19899b3183aa11843aad.exe N/A
File opened for modification C:\Program Files (x86)\Common Files\Azonic255\lithoclase.ini C:\Users\Admin\AppData\Local\Temp\cf3c06fc4ac2aa1437f095c70671e38c9b8fb7c553ee19899b3183aa11843aad.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\cf3c06fc4ac2aa1437f095c70671e38c9b8fb7c553ee19899b3183aa11843aad.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\cf3c06fc4ac2aa1437f095c70671e38c9b8fb7c553ee19899b3183aa11843aad.exe N/A

Suspicious behavior: MapViewOfSection

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\cf3c06fc4ac2aa1437f095c70671e38c9b8fb7c553ee19899b3183aa11843aad.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\cf3c06fc4ac2aa1437f095c70671e38c9b8fb7c553ee19899b3183aa11843aad.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\cf3c06fc4ac2aa1437f095c70671e38c9b8fb7c553ee19899b3183aa11843aad.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\cf3c06fc4ac2aa1437f095c70671e38c9b8fb7c553ee19899b3183aa11843aad.exe

"C:\Users\Admin\AppData\Local\Temp\cf3c06fc4ac2aa1437f095c70671e38c9b8fb7c553ee19899b3183aa11843aad.exe"

C:\Users\Admin\AppData\Local\Temp\cf3c06fc4ac2aa1437f095c70671e38c9b8fb7c553ee19899b3183aa11843aad.exe

"C:\Users\Admin\AppData\Local\Temp\cf3c06fc4ac2aa1437f095c70671e38c9b8fb7c553ee19899b3183aa11843aad.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 0.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 58.55.71.13.in-addr.arpa udp
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 216.58.212.227:80 c.pki.goog tcp
US 8.8.8.8:53 o.pki.goog udp
US 8.8.8.8:53 206.187.250.142.in-addr.arpa udp
US 8.8.8.8:53 227.187.250.142.in-addr.arpa udp
US 8.8.8.8:53 227.212.58.216.in-addr.arpa 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 8.8.8.8:53 225.16.217.172.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 8.8.8.8:53 200.163.202.172.in-addr.arpa udp
US 8.8.8.8:53 152.74.67.172.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp

Files

C:\Users\Admin\AppData\Local\Temp\nse9DD8.tmp\System.dll

MD5 d6f54d2cefdf58836805796f55bfc846
SHA1 b980addc1a755b968dd5799179d3b4f1c2de9d2d
SHA256 f917aef484d1fbb4d723b2e2d3045cb6f5f664e61fbb3d5c577bd1c215de55d9
SHA512 ce67da936a93d46ef7e81abc8276787c82fd844c03630ba18afc3528c7e420c3228bfe82aeda083bb719f2d1314afae913362abd1e220cb364606519690d45db

memory/540-15-0x0000000004DC0000-0x0000000006C22000-memory.dmp

memory/540-17-0x00000000771E1000-0x0000000077301000-memory.dmp

memory/540-16-0x0000000004DC0000-0x0000000006C22000-memory.dmp

memory/540-18-0x0000000073E35000-0x0000000073E36000-memory.dmp

memory/540-19-0x0000000004DC0000-0x0000000006C22000-memory.dmp

memory/5088-20-0x0000000001A80000-0x00000000038E2000-memory.dmp

memory/5088-33-0x0000000000820000-0x0000000001A74000-memory.dmp

memory/5088-34-0x0000000001A80000-0x00000000038E2000-memory.dmp

memory/5088-35-0x0000000000820000-0x0000000001A74000-memory.dmp

memory/5088-36-0x0000000000820000-0x0000000000860000-memory.dmp

memory/5088-37-0x00000000366F0000-0x0000000036C94000-memory.dmp

memory/5088-38-0x0000000036580000-0x00000000365E6000-memory.dmp

memory/5088-39-0x0000000037480000-0x00000000374D0000-memory.dmp

memory/5088-40-0x00000000374D0000-0x0000000037562000-memory.dmp

memory/5088-41-0x0000000037730000-0x000000003773A000-memory.dmp

Analysis: behavioral3

Detonation Overview

Submitted

2024-11-11 01:34

Reported

2024-11-11 01:36

Platform

win7-20240903-en

Max time kernel

117s

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 2072 -s 220

Network

N/A

Files

N/A

Analysis: behavioral4

Detonation Overview

Submitted

2024-11-11 01:34

Reported

2024-11-11 01:36

Platform

win10v2004-20241007-en

Max time kernel

94s

Max time network

140s

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 5032 wrote to memory of 4528 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 5032 wrote to memory of 4528 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 5032 wrote to memory of 4528 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 360 -p 4528 -ip 4528

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4528 -s 612

Network

Country Destination Domain Proto
US 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
US 8.8.8.8:53 83.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 0.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
US 8.8.8.8:53 212.20.149.52.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.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

N/A