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

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 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1688-63-0x0000000000400000-0x0000000000466000-memory.dmp	family_agenttesla
behavioral1/memory/1688-64-0x0000000000400000-0x0000000000466000-memory.dmp	family_agenttesla
behavioral1/memory/1688-65-0x0000000000400000-0x0000000000466000-memory.dmp	family_agenttesla
behavioral1/memory/1688-66-0x0000000000460BDE-mapping.dmp	family_agenttesla
behavioral1/memory/1688-68-0x0000000000400000-0x0000000000466000-memory.dmp	family_agenttesla
behavioral1/memory/1688-70-0x0000000000400000-0x0000000000466000-memory.dmp	family_agenttesla

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-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Invoice.pdf.exe
Key opened	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Invoice.pdf.exe
Key opened	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\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-1-5-21-2277218442-1199762539-2004043321-1000\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 1956 set thread context of 1688 1956 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

2016 schtasks.exe
Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

Invoice.pdf.exeInvoice.pdf.exe

pid process

1956 Invoice.pdf.exe
1956 Invoice.pdf.exe
1688 Invoice.pdf.exe
1688 Invoice.pdf.exe
Suspicious behavior: RenamesItself 1 IoCs

Processes:

Invoice.pdf.exe

pid process

1688 Invoice.pdf.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

Invoice.pdf.exeInvoice.pdf.exe

description pid process

Token: SeDebugPrivilege 1956 Invoice.pdf.exe
Token: SeDebugPrivilege 1688 Invoice.pdf.exe

description	pid	process	target process
PID 1956 set thread context of 1688	1956	Invoice.pdf.exe	Invoice.pdf.exe

pid	process
2016	schtasks.exe

pid	process
1956	Invoice.pdf.exe
1956	Invoice.pdf.exe
1688	Invoice.pdf.exe
1688	Invoice.pdf.exe

pid	process
1688	Invoice.pdf.exe

description	pid	process
Token: SeDebugPrivilege	1956	Invoice.pdf.exe
Token: SeDebugPrivilege	1688	Invoice.pdf.exe

Suspicious use of WriteProcessMemory 13 IoCs

Processes:

Invoice.pdf.exe

description	pid	process	target process
PID 1956 wrote to memory of 2016	1956	Invoice.pdf.exe	schtasks.exe
PID 1956 wrote to memory of 2016	1956	Invoice.pdf.exe	schtasks.exe
PID 1956 wrote to memory of 2016	1956	Invoice.pdf.exe	schtasks.exe
PID 1956 wrote to memory of 2016	1956	Invoice.pdf.exe	schtasks.exe
PID 1956 wrote to memory of 1688	1956	Invoice.pdf.exe	Invoice.pdf.exe
PID 1956 wrote to memory of 1688	1956	Invoice.pdf.exe	Invoice.pdf.exe
PID 1956 wrote to memory of 1688	1956	Invoice.pdf.exe	Invoice.pdf.exe
PID 1956 wrote to memory of 1688	1956	Invoice.pdf.exe	Invoice.pdf.exe
PID 1956 wrote to memory of 1688	1956	Invoice.pdf.exe	Invoice.pdf.exe
PID 1956 wrote to memory of 1688	1956	Invoice.pdf.exe	Invoice.pdf.exe
PID 1956 wrote to memory of 1688	1956	Invoice.pdf.exe	Invoice.pdf.exe
PID 1956 wrote to memory of 1688	1956	Invoice.pdf.exe	Invoice.pdf.exe
PID 1956 wrote to memory of 1688	1956	Invoice.pdf.exe	Invoice.pdf.exe

outlook_office_path 1 IoCs

Processes:

Invoice.pdf.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\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-1-5-21-2277218442-1199762539-2004043321-1000\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⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1956

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\jBFkxcVwbky" /XML "C:\Users\Admin\AppData\Local\Temp\tmpCA04.tmp"
2⤵
- Creates scheduled task(s)
PID:2016

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:1688

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Registry Run Keys / Startup Folder

1

T1060

Scheduled Task

1

T1053

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

3

T1005

Email Collection

1

T1114

Exfiltration

Command and Control

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\tmpCA04.tmp
Filesize
1KB

MD5
6f8613489ded1699cfa5afda575c319e

SHA1
f9bf639e7cacebb4b00e1d1bc4f79aa484d4f62b

SHA256
fd1c4b6fb75e8ea6c68c59e29cbef4e29a9ece7973ae4f1df2a8917b94c2737d

SHA512
450e9610d48fa7a172fe7c6a33e1727793d3a82c85d4e2ac06b14601d55a96ae990e2c6f0db07671ecaeaddeb6fcd6adbcd41929091320a4cbf4f677097b7ab9

Download Submit
memory/1688-64-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/1688-66-0x0000000000460BDE-mapping.dmp

Download
memory/1688-71-0x00000000761F1000-0x00000000761F3000-memory.dmp

Filesize
8KB

Download
memory/1688-70-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/1688-68-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/1688-60-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/1688-61-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/1688-63-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/1688-65-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/1956-54-0x0000000001350000-0x00000000013E6000-memory.dmp

Filesize
600KB

Download
memory/1956-56-0x0000000001290000-0x0000000001312000-memory.dmp

Filesize
520KB

Download
memory/1956-55-0x0000000000390000-0x000000000039A000-memory.dmp

Filesize
40KB

Download
memory/1956-57-0x0000000004BF0000-0x0000000004C72000-memory.dmp

Filesize
520KB

Download
memory/2016-58-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

Loading Replay Monitor...

Downloads