agenttesla | 0770133d27e47a0cbbac1ce9e1147182a607711907158b2f97b6dda8cea997d7

General

Target

Invoice.pdf.exe
Size

576KB
MD5

930091c98bb3b061c28b243dff029dee
SHA1

931dd659e1b25157cb04eddd79fe7581511842b5
SHA256

b250144e3bf196501c5064576d34ff66398323d7862e957f359a263d7a0c3636
SHA512

32cdd782f4ec5c0a9e1034fe6a46e1b5e0edcbf5118d36fddd0db71958cda5e52676a00e9c4b538a86eaf6aada8dd9732cad13d74150c98e12ffa3e5aa5d7232

Score

10^/10

agenttesla collection keylogger persistence spyware stealer trojan

Malware Config

Extracted

Credentials

Protocol: smtp
Host:
us2.smtp.mailhostbox.com
Port:
587
Username:
[email protected]
Password:
SAIRAM@98765

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
us2.smtp.mailhostbox.com
Port:
587
Username:
[email protected]
Password:
SAIRAM@98765

Signatures

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

AgentTesla Payload 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4500-137-0x0000000000400000-0x0000000000466000-memory.dmp	family_agenttesla

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

Invoice.pdf.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Control Panel\International\Geo\Nation	Invoice.pdf.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:

Invoice.pdf.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Invoice.pdf.exe
Key opened	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Invoice.pdf.exe
Key opened	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Invoice.pdf.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

Invoice.pdf.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\YYtJku = "C:\\Users\\Admin\\AppData\\Roaming\\YYtJku\\YYtJku.exe"	Invoice.pdf.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

Invoice.pdf.exe

description pid process target process

PID 4828 set thread context of 4500 4828 Invoice.pdf.exe Invoice.pdf.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

3844 schtasks.exe
Suspicious behavior: EnumeratesProcesses 5 IoCs

Processes:

Invoice.pdf.exeInvoice.pdf.exe

pid process

4828 Invoice.pdf.exe
4828 Invoice.pdf.exe
4828 Invoice.pdf.exe
4500 Invoice.pdf.exe
4500 Invoice.pdf.exe
Suspicious behavior: RenamesItself 1 IoCs

Processes:

Invoice.pdf.exe

pid process

4500 Invoice.pdf.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

Invoice.pdf.exeInvoice.pdf.exe

description pid process

Token: SeDebugPrivilege 4828 Invoice.pdf.exe
Token: SeDebugPrivilege 4500 Invoice.pdf.exe

description	pid	process	target process
PID 4828 set thread context of 4500	4828	Invoice.pdf.exe	Invoice.pdf.exe

pid	process
3844	schtasks.exe

pid	process
4828	Invoice.pdf.exe
4828	Invoice.pdf.exe
4828	Invoice.pdf.exe
4500	Invoice.pdf.exe
4500	Invoice.pdf.exe

pid	process
4500	Invoice.pdf.exe

description	pid	process
Token: SeDebugPrivilege	4828	Invoice.pdf.exe
Token: SeDebugPrivilege	4500	Invoice.pdf.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

Invoice.pdf.exe

description	pid	process	target process
PID 4828 wrote to memory of 3844	4828	Invoice.pdf.exe	schtasks.exe
PID 4828 wrote to memory of 3844	4828	Invoice.pdf.exe	schtasks.exe
PID 4828 wrote to memory of 3844	4828	Invoice.pdf.exe	schtasks.exe
PID 4828 wrote to memory of 4500	4828	Invoice.pdf.exe	Invoice.pdf.exe
PID 4828 wrote to memory of 4500	4828	Invoice.pdf.exe	Invoice.pdf.exe
PID 4828 wrote to memory of 4500	4828	Invoice.pdf.exe	Invoice.pdf.exe
PID 4828 wrote to memory of 4500	4828	Invoice.pdf.exe	Invoice.pdf.exe
PID 4828 wrote to memory of 4500	4828	Invoice.pdf.exe	Invoice.pdf.exe
PID 4828 wrote to memory of 4500	4828	Invoice.pdf.exe	Invoice.pdf.exe
PID 4828 wrote to memory of 4500	4828	Invoice.pdf.exe	Invoice.pdf.exe
PID 4828 wrote to memory of 4500	4828	Invoice.pdf.exe	Invoice.pdf.exe

outlook_office_path 1 IoCs

Processes:

Invoice.pdf.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Invoice.pdf.exe

outlook_win_path 1 IoCs

Processes:

Invoice.pdf.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Invoice.pdf.exe

C:\Users\Admin\AppData\Local\Temp\Invoice.pdf.exe
"C:\Users\Admin\AppData\Local\Temp\Invoice.pdf.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4828

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\jBFkxcVwbky" /XML "C:\Users\Admin\AppData\Local\Temp\tmpC8DE.tmp"
2⤵
- Creates scheduled task(s)
PID:3844

C:\Users\Admin\AppData\Local\Temp\Invoice.pdf.exe
"{path}"
2⤵
- Accesses Microsoft Outlook profiles
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: RenamesItself
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:4500

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

Query Registry

1

T1012

System Information Discovery

2

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\Microsoft\CLR_v4.0_32\UsageLogs\Invoice.pdf.exe.log

Filesize
507B

MD5
76ffb2f33cb32ade8fc862a67599e9d8

SHA1
920cc4ab75b36d2f9f6e979b74db568973c49130

SHA256
f1a3724670e3379318ec9c73f6f39058cab0ab013ba3cd90c047c3d701362310

SHA512
f33502c2e1bb30c05359bfc6819ca934642a1e01874e3060349127d792694d56ad22fccd6c9477b8ee50d66db35785779324273f509576b48b7f85577e001b4e

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpC8DE.tmp

Filesize
1KB

MD5
5cdb2306218e1010d4b66c6d59f33a5f

SHA1
a59c470513c0f886e577590022c2355ba46c0fcf

SHA256
8e7039bf2f35b70ed65b8442367eb562e994444b196f570a95f2d63a7ef50433

SHA512
d9f25108aca60cc0d6e1396252a48dfebf41231dc08c5f05218c039e51f76b01f080aa4c6a83060d8fc523a91fa5fbc59210edb44f48e1503ce060a1e90f13e9

Download Submit
memory/3844-134-0x0000000000000000-mapping.dmp

Download
memory/4500-136-0x0000000000000000-mapping.dmp

Download
memory/4500-137-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/4500-139-0x0000000005FD0000-0x0000000006036000-memory.dmp

Filesize
408KB

Download
memory/4500-140-0x00000000067B0000-0x0000000006800000-memory.dmp

Filesize
320KB

Download
memory/4500-141-0x0000000006530000-0x000000000653A000-memory.dmp

Filesize
40KB

Download
memory/4828-130-0x00000000003D0000-0x0000000000466000-memory.dmp

Filesize
600KB

Download
memory/4828-131-0x0000000005400000-0x00000000059A4000-memory.dmp

Filesize
5.6MB

Download
memory/4828-132-0x0000000004E50000-0x0000000004EE2000-memory.dmp

Filesize
584KB

Download
memory/4828-133-0x0000000005B50000-0x0000000005BEC000-memory.dmp

Filesize
624KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads