agenttesla | 103ddbecf62984789f874fb2d4ec846feeef6d40c191bc35285379a7c6d77228

General

Target

offer_pdf.exe
Size

698KB
MD5

d6c4a40b53155650b55182e4e51e0e26
SHA1

4af700b05b0a551c95db315e486895c8610e8169
SHA256

ddefa12712998a6705858c96559d4f08a6f75615298c321be7eecc1a60ccc04f
SHA512

a81667f40aa9f6643b6b8214f557ecf5da7d6f404c00b1ba52076b3da58326c9a75a8c32ede0845145171123d2b231552691327b29a7d4e120f4a9cdeca4e238

Score

10^/10

agenttesla collection keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
smtp.mosaiclayouts.com
Port:
587
Username:
sales@mosaiclayouts.com
Password:
UY$W4+]^+9;)7CF5

Signatures

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

AgentTesla Payload 2 IoCs

Processes:

resource	yara_rule
behavioral4/memory/3476-132-0x00000000009D0000-0x0000000000A1C000-memory.dmp	family_agenttesla
behavioral4/memory/3476-133-0x00000000009D0000-0x0000000000A1C000-memory.dmp	family_agenttesla

Drops startup file 1 IoCs

Processes:

notepad.exe

description ioc process

File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\app.vbs notepad.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 created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\app.vbs	notepad.exe

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

Processes:

offer_pdf.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	offer_pdf.exe
Key opened	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	offer_pdf.exe
Key opened	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	offer_pdf.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

offer_pdf.exe

description pid process target process

PID 332 set thread context of 3476 332 offer_pdf.exe offer_pdf.exe
Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

offer_pdf.exeoffer_pdf.exe

pid process

332 offer_pdf.exe
332 offer_pdf.exe
3476 offer_pdf.exe
3476 offer_pdf.exe
Suspicious behavior: MapViewOfSection 1 IoCs

Processes:

offer_pdf.exe

pid process

332 offer_pdf.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

offer_pdf.exe

description pid process

Token: SeDebugPrivilege 3476 offer_pdf.exe

description	pid	process	target process
PID 332 set thread context of 3476	332	offer_pdf.exe	offer_pdf.exe

pid	process
332	offer_pdf.exe
332	offer_pdf.exe
3476	offer_pdf.exe
3476	offer_pdf.exe

pid	process
332	offer_pdf.exe

description	pid	process
Token: SeDebugPrivilege	3476	offer_pdf.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

offer_pdf.exe

description	pid	process	target process
PID 332 wrote to memory of 5032	332	offer_pdf.exe	notepad.exe
PID 332 wrote to memory of 5032	332	offer_pdf.exe	notepad.exe
PID 332 wrote to memory of 5032	332	offer_pdf.exe	notepad.exe
PID 332 wrote to memory of 5032	332	offer_pdf.exe	notepad.exe
PID 332 wrote to memory of 5032	332	offer_pdf.exe	notepad.exe
PID 332 wrote to memory of 3476	332	offer_pdf.exe	offer_pdf.exe
PID 332 wrote to memory of 3476	332	offer_pdf.exe	offer_pdf.exe
PID 332 wrote to memory of 3476	332	offer_pdf.exe	offer_pdf.exe

outlook_office_path 1 IoCs

Processes:

offer_pdf.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	offer_pdf.exe

outlook_win_path 1 IoCs

Processes:

offer_pdf.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	offer_pdf.exe

C:\Users\Admin\AppData\Local\Temp\offer_pdf.exe
"C:\Users\Admin\AppData\Local\Temp\offer_pdf.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:332

C:\Windows\SysWOW64\notepad.exe
"C:\Windows\system32\notepad.exe"
2⤵
- Drops startup file
PID:5032

C:\Users\Admin\AppData\Local\Temp\offer_pdf.exe
"C:\Users\Admin\AppData\Local\Temp\offer_pdf.exe"
2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:3476

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

3

T1081

Discovery

Lateral Movement

Collection

Data from Local System

3

T1005

Email Collection

1

T1114

Exfiltration

Command and Control

Impact

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Downloads

memory/332-134-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/3476-131-0x0000000000000000-mapping.dmp

Download
memory/3476-132-0x00000000009D0000-0x0000000000A1C000-memory.dmp

Filesize
304KB

Download
memory/3476-133-0x00000000009D0000-0x0000000000A1C000-memory.dmp

Filesize
304KB

Download
memory/3476-135-0x0000000004E60000-0x0000000005404000-memory.dmp

Filesize
5.6MB

Download
memory/3476-136-0x0000000004BB0000-0x0000000004C42000-memory.dmp

Filesize
584KB

Download
memory/3476-137-0x0000000004D40000-0x0000000004DDC000-memory.dmp

Filesize
624KB

Download
memory/3476-138-0x0000000005920000-0x0000000005986000-memory.dmp

Filesize
408KB

Download
memory/3476-139-0x0000000006280000-0x000000000628A000-memory.dmp

Filesize
40KB

Download
memory/5032-130-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads