agenttesla | 401400d289a4793b90e2bbcb8e9b787f12f690f5405f6409b920a829135c3746

General

Target

INVOICE.exe
Size

530KB
MD5

6426bbfce0fb5578344e80ea510bafb2
SHA1

6cd2481ce9fcfc58c6fc5405a437f7f639034085
SHA256

b72ebb6d27797219209ba8fdfbbe32447e34919e080af0a0fa31117921ad59b0
SHA512

c70f04f64310f6d5f112a2a36266b69a50918f09f8b33c900b512a7268196fa898c1c1da44b7786cc623c0a2673eff8d2699c9280d3cabf1aea9d27cf1536e06

Score

10^/10

agenttesla collection keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.focuzpartsmart.com
Port:
587
Username:
[email protected]
Password:
Fpmabi@2016

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/1820-66-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla
behavioral1/memory/1820-67-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla
behavioral1/memory/1820-68-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla
behavioral1/memory/1820-69-0x000000000043771E-mapping.dmp	family_agenttesla
behavioral1/memory/1820-70-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla

Drops file in Drivers directory 1 IoCs

Processes:

INVOICE.exe

description ioc process

File opened for modification C:\Windows\system32\drivers\etc\hosts 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

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

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

Processes:

INVOICE.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-103686315-404690609-2047157615-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	INVOICE.exe
Key opened	\REGISTRY\USER\S-1-5-21-103686315-404690609-2047157615-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	INVOICE.exe
Key opened	\REGISTRY\USER\S-1-5-21-103686315-404690609-2047157615-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	INVOICE.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

INVOICE.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-103686315-404690609-2047157615-1000\Software\Microsoft\Windows\CurrentVersion\Run\tKZVPq = "C:\\Users\\Admin\\AppData\\Roaming\\tKZVPq\\tKZVPq.exe"	INVOICE.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

INVOICE.exe

description pid process target process

PID 652 set thread context of 1820 652 INVOICE.exe INVOICE.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task
T1053

Processes:

schtasks.exe

pid process

1496 schtasks.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

INVOICE.exe

pid process

1820 INVOICE.exe
1820 INVOICE.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

INVOICE.exeINVOICE.exe

description pid process

Token: SeDebugPrivilege 652 INVOICE.exe
Token: SeDebugPrivilege 1820 INVOICE.exe

description	pid	process	target process
PID 652 set thread context of 1820	652	INVOICE.exe	INVOICE.exe

pid	process
1496	schtasks.exe

pid	process
1820	INVOICE.exe
1820	INVOICE.exe

description	pid	process
Token: SeDebugPrivilege	652	INVOICE.exe
Token: SeDebugPrivilege	1820	INVOICE.exe

Suspicious use of WriteProcessMemory 13 IoCs

Processes:

INVOICE.exe

description	pid	process	target process
PID 652 wrote to memory of 1496	652	INVOICE.exe	schtasks.exe
PID 652 wrote to memory of 1496	652	INVOICE.exe	schtasks.exe
PID 652 wrote to memory of 1496	652	INVOICE.exe	schtasks.exe
PID 652 wrote to memory of 1496	652	INVOICE.exe	schtasks.exe
PID 652 wrote to memory of 1820	652	INVOICE.exe	INVOICE.exe
PID 652 wrote to memory of 1820	652	INVOICE.exe	INVOICE.exe
PID 652 wrote to memory of 1820	652	INVOICE.exe	INVOICE.exe
PID 652 wrote to memory of 1820	652	INVOICE.exe	INVOICE.exe
PID 652 wrote to memory of 1820	652	INVOICE.exe	INVOICE.exe
PID 652 wrote to memory of 1820	652	INVOICE.exe	INVOICE.exe
PID 652 wrote to memory of 1820	652	INVOICE.exe	INVOICE.exe
PID 652 wrote to memory of 1820	652	INVOICE.exe	INVOICE.exe
PID 652 wrote to memory of 1820	652	INVOICE.exe	INVOICE.exe

outlook_office_path 1 IoCs

Processes:

INVOICE.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-103686315-404690609-2047157615-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	INVOICE.exe

outlook_win_path 1 IoCs

Processes:

INVOICE.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-103686315-404690609-2047157615-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	INVOICE.exe

C:\Users\Admin\AppData\Local\Temp\INVOICE.exe
"C:\Users\Admin\AppData\Local\Temp\INVOICE.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:652

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\gjEQxLTmkFgVo" /XML "C:\Users\Admin\AppData\Local\Temp\tmp314D.tmp"
2⤵
- Creates scheduled task(s)
PID:1496

C:\Users\Admin\AppData\Local\Temp\INVOICE.exe
"{path}"
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:1820

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Registry Run Keys / Startup Folder

Scheduled Task

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Modify Registry

1

T1112

Credential Access

Credentials in Files

3

T1081

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp314D.tmp

MD5
40d86e31fc452b14c6e0a797c557e7ce

SHA1
acb3bc652540e080c404efbec2c68dec8dd28e22

SHA256
4aa94edc73d7ea9126c1b21268da09ac17102ddf96eb6d15af998499bac57d4c

SHA512
a49f970ceac32b7fdf99cdca36d215a77fd5f1ef55da746a88ecb9209701f6cd7938adcbfe721299d15943e4fc08288e7eb6f3fed4497ccdfffe234f655dff13

Download Submit
memory/652-55-0x0000000000A20000-0x0000000000A21000-memory.dmp

Filesize
4KB

Download
memory/652-57-0x0000000076171000-0x0000000076173000-memory.dmp

Filesize
8KB

Download
memory/652-58-0x0000000004D70000-0x0000000004D71000-memory.dmp

Filesize
4KB

Download
memory/652-59-0x0000000000490000-0x0000000000495000-memory.dmp

Filesize
20KB

Download
memory/652-60-0x0000000004CB0000-0x0000000004D2F000-memory.dmp

Filesize
508KB

Download
memory/652-61-0x0000000000530000-0x0000000000568000-memory.dmp

Filesize
224KB

Download
memory/1496-62-0x0000000000000000-mapping.dmp

Download
memory/1820-64-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/1820-65-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/1820-66-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/1820-67-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/1820-68-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/1820-69-0x000000000043771E-mapping.dmp

Download
memory/1820-70-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/1820-72-0x00000000049D0000-0x00000000049D1000-memory.dmp

Filesize
4KB

Download
memory/1820-73-0x00000000049D1000-0x00000000049D2000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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