agenttesla | 8e24500c381c9abb77a1892a68e62f367852ff945e1bcbac379441e4fea772b1

Resubmissions

23-05-2024 14:32

240523-rwr6naed5w 10

23-05-2024 14:31

240523-rvpzxaee27 10

23-05-2024 08:41

240523-klg5daba72 10

Analysis

max time kernel
121s
max time network
130s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
23-05-2024 14:31

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General

Target

Ach_Payment_Advice01.exe
Size

689KB
MD5

eeb0a5f2f2e765bbe937e595ddd0650a
SHA1

2a5127e5fdf921547b4ec39e964682469573e1f6
SHA256

2869686380724afd713bbefc58c9aceabd90692e27d9de7af96e748b3066d8e9
SHA512

46f36ddb5d6dc37ac4d1d0388c87971933e8f8fae7de89d54483b5a900365c786b859b9b7fbd7f721a03ac03025ce800f5ee3ebcb67aa22442d8df1853456ee8
SSDEEP

12288:c5h2Xp96Wtlc5ingN/JuXdH7O18x3UObHgf5jFuq4XQM5taSw40fgYYMiwp68kxU:c5UXfvtlc5yC/adbChYjl9c40oRwI81

Score

10^/10

agenttesla evasion execution keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

https://api.telegram.org/bot7116470912:AAFcUeHH1656vYbBtccMjQVal4iMak99ZmA/

Signatures

AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
keylogger trojan stealer spyware agenttesla

UAC bypass 3 TTPs 1 IoCs

evasion trojan

Bypass User Account Control

T1548.002

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Processes:

Ach_Payment_Advice01.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	Ach_Payment_Advice01.exe

Looks for VirtualBox Guest Additions in registry 2 TTPs 1 IoCs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497

Processes:

Ach_Payment_Advice01.exe

description ioc process

Key opened \REGISTRY\MACHINE\SOFTWARE\Oracle\VirtualBox Guest Additions Ach_Payment_Advice01.exe
Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
execution

PowerShell
T1059.001

Processes:

powershell.exe

pid process

2668 powershell.exe
Looks for VMWare Tools registry key 2 TTPs 1 IoCs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497

Processes:

Ach_Payment_Advice01.exe

description ioc process

Key opened \REGISTRY\MACHINE\SOFTWARE\VMware, Inc.\VMware Tools Ach_Payment_Advice01.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SOFTWARE\Oracle\VirtualBox Guest Additions	Ach_Payment_Advice01.exe

pid	process
2668	powershell.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SOFTWARE\VMware, Inc.\VMware Tools	Ach_Payment_Advice01.exe

Checks BIOS information in registry 2 TTPs 2 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

Ach_Payment_Advice01.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	Ach_Payment_Advice01.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	Ach_Payment_Advice01.exe

Reads WinSCP keys stored on the system 2 TTPs
Tries to access WinSCP stored sessions.
spyware stealer

Data from Local System
T1005

Credentials in Registry
T1552.002
Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001
Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Checks whether UAC is enabled 1 TTPs 2 IoCs

evasion trojan

System Information Discovery

T1082

Processes:

Ach_Payment_Advice01.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	Ach_Payment_Advice01.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	Ach_Payment_Advice01.exe

Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow ioc

4 api.ipify.org
5 api.ipify.org

flow	ioc
4	api.ipify.org
5	api.ipify.org

Maps connected drives based on registry 3 TTPs 2 IoCs

Disk information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

Processes:

Ach_Payment_Advice01.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	Ach_Payment_Advice01.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0	Ach_Payment_Advice01.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

Ach_Payment_Advice01.exe

description pid process target process

PID 2912 set thread context of 2940 2912 Ach_Payment_Advice01.exe regasm.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

powershell.exeregasm.exe

pid process

2668 powershell.exe
2940 regasm.exe
2940 regasm.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

powershell.exeregasm.exe

description pid process

Token: SeDebugPrivilege 2668 powershell.exe
Token: SeDebugPrivilege 2940 regasm.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

regasm.exe

pid process

2940 regasm.exe

description	pid	process	target process
PID 2912 set thread context of 2940	2912	Ach_Payment_Advice01.exe	regasm.exe

pid	process
2668	powershell.exe
2940	regasm.exe
2940	regasm.exe

description	pid	process
Token: SeDebugPrivilege	2668	powershell.exe
Token: SeDebugPrivilege	2940	regasm.exe

pid	process
2940	regasm.exe

Suspicious use of WriteProcessMemory 18 IoCs

Processes:

Ach_Payment_Advice01.exe

description	pid	process	target process
PID 2912 wrote to memory of 2668	2912	Ach_Payment_Advice01.exe	powershell.exe
PID 2912 wrote to memory of 2668	2912	Ach_Payment_Advice01.exe	powershell.exe
PID 2912 wrote to memory of 2668	2912	Ach_Payment_Advice01.exe	powershell.exe
PID 2912 wrote to memory of 2940	2912	Ach_Payment_Advice01.exe	regasm.exe
PID 2912 wrote to memory of 2940	2912	Ach_Payment_Advice01.exe	regasm.exe
PID 2912 wrote to memory of 2940	2912	Ach_Payment_Advice01.exe	regasm.exe
PID 2912 wrote to memory of 2940	2912	Ach_Payment_Advice01.exe	regasm.exe
PID 2912 wrote to memory of 2940	2912	Ach_Payment_Advice01.exe	regasm.exe
PID 2912 wrote to memory of 2940	2912	Ach_Payment_Advice01.exe	regasm.exe
PID 2912 wrote to memory of 2940	2912	Ach_Payment_Advice01.exe	regasm.exe
PID 2912 wrote to memory of 2940	2912	Ach_Payment_Advice01.exe	regasm.exe
PID 2912 wrote to memory of 2940	2912	Ach_Payment_Advice01.exe	regasm.exe
PID 2912 wrote to memory of 2940	2912	Ach_Payment_Advice01.exe	regasm.exe
PID 2912 wrote to memory of 2940	2912	Ach_Payment_Advice01.exe	regasm.exe
PID 2912 wrote to memory of 2940	2912	Ach_Payment_Advice01.exe	regasm.exe
PID 2912 wrote to memory of 2492	2912	Ach_Payment_Advice01.exe	WerFault.exe
PID 2912 wrote to memory of 2492	2912	Ach_Payment_Advice01.exe	WerFault.exe
PID 2912 wrote to memory of 2492	2912	Ach_Payment_Advice01.exe	WerFault.exe

System policy modification 1 TTPs 1 IoCs

evasion

Modify Registry

T1112

Processes:

Ach_Payment_Advice01.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	Ach_Payment_Advice01.exe

C:\Users\Admin\AppData\Local\Temp\Ach_Payment_Advice01.exe
"C:\Users\Admin\AppData\Local\Temp\Ach_Payment_Advice01.exe"
1⤵
- UAC bypass
- Looks for VirtualBox Guest Additions in registry
- Looks for VMWare Tools registry key
- Checks BIOS information in registry
- Checks whether UAC is enabled
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
- System policy modification
PID:2912

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\Ach_Payment_Advice01.exe" -Force
2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2668

C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe"
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:2940

C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -u -p 2912 -s 684
2⤵
PID:2492

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Privilege Escalation

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Defense Evasion

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Impair Defenses

T1562

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Virtualization/Sandbox Evasion

T1497

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Credentials in Registry

T1552.002

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

Virtualization/Sandbox Evasion

T1497

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/2668-23-0x000000001B5C0000-0x000000001B8A2000-memory.dmp

Filesize
2.9MB

Download
memory/2668-24-0x0000000002860000-0x0000000002868000-memory.dmp

Filesize
32KB

Download
memory/2912-1-0x0000000000C50000-0x0000000000C6E000-memory.dmp

Filesize
120KB

Download
memory/2912-2-0x000007FEF5CE0000-0x000007FEF66CC000-memory.dmp

Filesize
9.9MB

Download
memory/2912-3-0x0000000000140000-0x0000000000146000-memory.dmp

Filesize
24KB

Download
memory/2912-4-0x0000000000320000-0x00000000003B6000-memory.dmp

Filesize
600KB

Download
memory/2912-40-0x000007FEF5CE0000-0x000007FEF66CC000-memory.dmp

Filesize
9.9MB

Download
memory/2912-39-0x000007FEF5CE3000-0x000007FEF5CE4000-memory.dmp

Filesize
4KB

Download
memory/2912-0-0x000007FEF5CE3000-0x000007FEF5CE4000-memory.dmp

Filesize
4KB

Download
memory/2940-22-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download
memory/2940-17-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2940-15-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download
memory/2940-11-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download
memory/2940-20-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download
memory/2940-18-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download
memory/2940-13-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download
memory/2940-9-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download