agenttesla | e9a0be8ed6adb0a6b1347c52ff8456718f8a2dccaf3451b06b322080e6a4af80

General

Target

Revised Invoice.exe
Size

515KB
MD5

1ae2e78d2b430f6611846c820d19d627
SHA1

2034c7970065c117a663b7a009d5f0c555857234
SHA256

96ee59d995670b53d0049b7f763381428b19f87d919b83e1bcdebac90e9846d0
SHA512

d9d781b1a31a90900fa3ec99f084c46294e25dfc147f5361107b1dd64b656d9e2e1d5440d5864207479cf8fadf41c04b8a4df97a17f1837f924a3203143a1e8c

Score

10^/10

agenttesla collection evasion keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.davaobay.com.ph
Port:
587
Username:
raeburngonzaga@davaobay.com.ph
Password:
p@ssw0rd

Signatures

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

AgentTesla Payload 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1084-64-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla
behavioral1/memory/1084-65-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla
behavioral1/memory/1084-66-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla
behavioral1/memory/1084-67-0x00000000004376CE-mapping.dmp	family_agenttesla
behavioral1/memory/1084-68-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla

Looks for VirtualBox Guest Additions in registry 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497
Drops file in Drivers directory 1 IoCs

Processes:

Revised Invoice.exe

description ioc process

File opened for modification C:\Windows\system32\drivers\etc\hosts Revised Invoice.exe
Looks for VMWare Tools registry key 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497

description	ioc	process
File opened for modification	C:\Windows\system32\drivers\etc\hosts	Revised Invoice.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:

Revised Invoice.exe

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

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
T1081
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
T1081
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
T1081

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

Processes:

Revised Invoice.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Revised Invoice.exe
Key opened	\REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Revised Invoice.exe
Key opened	\REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Revised Invoice.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

Revised Invoice.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Windows\CurrentVersion\Run\tKZVPq = "C:\\Users\\Admin\\AppData\\Roaming\\tKZVPq\\tKZVPq.exe"	Revised Invoice.exe

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:

Revised Invoice.exe

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

Suspicious use of SetThreadContext 1 IoCs

Processes:

Revised Invoice.exe

description pid process target process

PID 520 set thread context of 1084 520 Revised Invoice.exe Revised Invoice.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Suspicious behavior: EnumeratesProcesses 5 IoCs

Processes:

Revised Invoice.exeRevised Invoice.exepowershell.exe

pid process

520 Revised Invoice.exe
520 Revised Invoice.exe
1084 Revised Invoice.exe
1084 Revised Invoice.exe
1688 powershell.exe

description	pid	process	target process
PID 520 set thread context of 1084	520	Revised Invoice.exe	Revised Invoice.exe

pid	process
520	Revised Invoice.exe
520	Revised Invoice.exe
1084	Revised Invoice.exe
1084	Revised Invoice.exe
1688	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

Revised Invoice.exeRevised Invoice.exepowershell.exe

description	pid	process
Token: SeDebugPrivilege	520	Revised Invoice.exe
Token: SeDebugPrivilege	1084	Revised Invoice.exe
Token: SeDebugPrivilege	1688	powershell.exe

Suspicious use of WriteProcessMemory 17 IoCs

Processes:

Revised Invoice.exe

description	pid	process	target process
PID 520 wrote to memory of 1688	520	Revised Invoice.exe	powershell.exe
PID 520 wrote to memory of 1688	520	Revised Invoice.exe	powershell.exe
PID 520 wrote to memory of 1688	520	Revised Invoice.exe	powershell.exe
PID 520 wrote to memory of 1688	520	Revised Invoice.exe	powershell.exe
PID 520 wrote to memory of 1052	520	Revised Invoice.exe	Revised Invoice.exe
PID 520 wrote to memory of 1052	520	Revised Invoice.exe	Revised Invoice.exe
PID 520 wrote to memory of 1052	520	Revised Invoice.exe	Revised Invoice.exe
PID 520 wrote to memory of 1052	520	Revised Invoice.exe	Revised Invoice.exe
PID 520 wrote to memory of 1084	520	Revised Invoice.exe	Revised Invoice.exe
PID 520 wrote to memory of 1084	520	Revised Invoice.exe	Revised Invoice.exe
PID 520 wrote to memory of 1084	520	Revised Invoice.exe	Revised Invoice.exe
PID 520 wrote to memory of 1084	520	Revised Invoice.exe	Revised Invoice.exe
PID 520 wrote to memory of 1084	520	Revised Invoice.exe	Revised Invoice.exe
PID 520 wrote to memory of 1084	520	Revised Invoice.exe	Revised Invoice.exe
PID 520 wrote to memory of 1084	520	Revised Invoice.exe	Revised Invoice.exe
PID 520 wrote to memory of 1084	520	Revised Invoice.exe	Revised Invoice.exe
PID 520 wrote to memory of 1084	520	Revised Invoice.exe	Revised Invoice.exe

outlook_office_path 1 IoCs

Processes:

Revised Invoice.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Revised Invoice.exe

outlook_win_path 1 IoCs

Processes:

Revised Invoice.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Revised Invoice.exe

C:\Users\Admin\AppData\Local\Temp\Revised Invoice.exe
"C:\Users\Admin\AppData\Local\Temp\Revised Invoice.exe"
1⤵
- Checks BIOS information in registry
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:520

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\Revised Invoice.exe"
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1688

C:\Users\Admin\AppData\Local\Temp\Revised Invoice.exe
"C:\Users\Admin\AppData\Local\Temp\Revised Invoice.exe"
2⤵
PID:1052

C:\Users\Admin\AppData\Local\Temp\Revised Invoice.exe
"C:\Users\Admin\AppData\Local\Temp\Revised Invoice.exe"
2⤵
- Drops file in Drivers directory
- Accesses Microsoft Outlook profiles
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:1084

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

2

T1497

Modify Registry

1

T1112

Credential Access

Credentials in Files

3

T1081

Discovery

Query Registry

4

T1012

Virtualization/Sandbox Evasion

2

T1497

System Information Discovery

3

T1082

Peripheral Device Discovery

1

T1120

Lateral Movement

Collection

Data from Local System

3

T1005

Email Collection

1

T1114

Exfiltration

Command and Control

Impact

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Downloads

memory/520-54-0x0000000001070000-0x0000000001071000-memory.dmp

Filesize
4KB

Download
memory/520-56-0x0000000075661000-0x0000000075663000-memory.dmp

Filesize
8KB

Download
memory/520-57-0x0000000000410000-0x0000000000417000-memory.dmp

Filesize
28KB

Download
memory/520-58-0x0000000004DD0000-0x0000000004DD1000-memory.dmp

Filesize
4KB

Download
memory/520-59-0x0000000004850000-0x00000000048A8000-memory.dmp

Filesize
352KB

Download
memory/1084-64-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/1084-62-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/1084-63-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/1084-65-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/1084-66-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/1084-67-0x00000000004376CE-mapping.dmp

Download
memory/1084-68-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/1084-70-0x0000000004BC0000-0x0000000004BC1000-memory.dmp

Filesize
4KB

Download
memory/1084-74-0x0000000004BC1000-0x0000000004BC2000-memory.dmp

Filesize
4KB

Download
memory/1688-60-0x0000000000000000-mapping.dmp

Download
memory/1688-71-0x0000000000340000-0x0000000000341000-memory.dmp

Filesize
4KB

Download
memory/1688-72-0x0000000000341000-0x0000000000342000-memory.dmp

Filesize
4KB

Download
memory/1688-73-0x0000000000342000-0x0000000000344000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads