agenttesla | 78754a57a06bd7b5f2eaa2fbee3ef6ccfcf04dfc1500f9c1dff4f115f67c2929

General

Target

overdue invoice.pdf...exe
Size

539KB
MD5

fa0c9ce3695691566ec8fbba088433c6
SHA1

1b5693cbe7521087c8bb5b46a8706edb71b037a4
SHA256

93c807a2fb8dff5a30d9f860f1eb98304d8303f8fff4c53c98870201d6d3eb68
SHA512

b3bb49000f13d18163d685905384b7acbca9b165cc009b53830c7f567b5c9f762fb6c6d1c08036db774265c1048d3e62b6ca198253a37a8a5a19adcffac4c57a

Score

10^/10

agenttesla collection keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.matrixas.in
Port:
587
Username:
[email protected]
Password:
info2013

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/1252-65-0x0000000000400000-0x000000000044A000-memory.dmp	family_agenttesla
behavioral1/memory/1252-63-0x0000000000400000-0x000000000044A000-memory.dmp	family_agenttesla
behavioral1/memory/1252-64-0x0000000000400000-0x000000000044A000-memory.dmp	family_agenttesla
behavioral1/memory/1252-66-0x0000000000445ECE-mapping.dmp	family_agenttesla
behavioral1/memory/1252-68-0x0000000000400000-0x000000000044A000-memory.dmp	family_agenttesla
behavioral1/memory/1252-70-0x0000000000400000-0x000000000044A000-memory.dmp	family_agenttesla

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:

overdue invoice.pdf...exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	overdue invoice.pdf...exe
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	overdue invoice.pdf...exe
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	overdue invoice.pdf...exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

overdue invoice.pdf...exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows\CurrentVersion\Run\BAVLA = "C:\\Users\\Admin\\AppData\\Roaming\\BAVLA\\BAVLA.exe"	overdue invoice.pdf...exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

overdue invoice.pdf...exe

description pid process target process

PID 1528 set thread context of 1252 1528 overdue invoice.pdf...exe overdue 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

892 schtasks.exe
Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

overdue invoice.pdf...exeoverdue invoice.pdf...exe

pid process

1528 overdue invoice.pdf...exe
1252 overdue invoice.pdf...exe
1252 overdue invoice.pdf...exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

overdue invoice.pdf...exeoverdue invoice.pdf...exe

description pid process

Token: SeDebugPrivilege 1528 overdue invoice.pdf...exe
Token: SeDebugPrivilege 1252 overdue invoice.pdf...exe

description	pid	process	target process
PID 1528 set thread context of 1252	1528	overdue invoice.pdf...exe	overdue invoice.pdf...exe

pid	process
892	schtasks.exe

pid	process
1528	overdue invoice.pdf...exe
1252	overdue invoice.pdf...exe
1252	overdue invoice.pdf...exe

description	pid	process
Token: SeDebugPrivilege	1528	overdue invoice.pdf...exe
Token: SeDebugPrivilege	1252	overdue invoice.pdf...exe

Suspicious use of WriteProcessMemory 13 IoCs

Processes:

overdue invoice.pdf...exe

description	pid	process	target process
PID 1528 wrote to memory of 892	1528	overdue invoice.pdf...exe	schtasks.exe
PID 1528 wrote to memory of 892	1528	overdue invoice.pdf...exe	schtasks.exe
PID 1528 wrote to memory of 892	1528	overdue invoice.pdf...exe	schtasks.exe
PID 1528 wrote to memory of 892	1528	overdue invoice.pdf...exe	schtasks.exe
PID 1528 wrote to memory of 1252	1528	overdue invoice.pdf...exe	overdue invoice.pdf...exe
PID 1528 wrote to memory of 1252	1528	overdue invoice.pdf...exe	overdue invoice.pdf...exe
PID 1528 wrote to memory of 1252	1528	overdue invoice.pdf...exe	overdue invoice.pdf...exe
PID 1528 wrote to memory of 1252	1528	overdue invoice.pdf...exe	overdue invoice.pdf...exe
PID 1528 wrote to memory of 1252	1528	overdue invoice.pdf...exe	overdue invoice.pdf...exe
PID 1528 wrote to memory of 1252	1528	overdue invoice.pdf...exe	overdue invoice.pdf...exe
PID 1528 wrote to memory of 1252	1528	overdue invoice.pdf...exe	overdue invoice.pdf...exe
PID 1528 wrote to memory of 1252	1528	overdue invoice.pdf...exe	overdue invoice.pdf...exe
PID 1528 wrote to memory of 1252	1528	overdue invoice.pdf...exe	overdue invoice.pdf...exe

outlook_office_path 1 IoCs

Processes:

overdue invoice.pdf...exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	overdue invoice.pdf...exe

outlook_win_path 1 IoCs

Processes:

overdue invoice.pdf...exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	overdue invoice.pdf...exe

C:\Users\Admin\AppData\Local\Temp\overdue invoice.pdf...exe
"C:\Users\Admin\AppData\Local\Temp\overdue invoice.pdf...exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1528

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\zRCQEZ" /XML "C:\Users\Admin\AppData\Local\Temp\tmpB26F.tmp"
2⤵
- Creates scheduled task(s)
PID:892

C:\Users\Admin\AppData\Local\Temp\overdue invoice.pdf...exe
"{path}"
2⤵
- Accesses Microsoft Outlook profiles
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:1252

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

2

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\tmpB26F.tmp

Filesize
1KB

MD5
a5c664eb7931fca425aabe7fded65b5f

SHA1
2b5dd436b545dde6cc22f7b911f4c6efaa313b59

SHA256
df22497993ee539e0e2f2ee4b0bee80f149f2ed85675bccd549ca5e9a523a117

SHA512
9b37e6e9e96b51344b86234f1eac02d67528ca3015eb83ee1e785406a5225c7fc5184884a3cd2b21e9013823bf2207ad77b8ede87ab23608946b47390b77796d

Download Submit
memory/892-58-0x0000000000000000-mapping.dmp

Download
memory/1252-63-0x0000000000400000-0x000000000044A000-memory.dmp

Filesize
296KB

Download
memory/1252-60-0x0000000000400000-0x000000000044A000-memory.dmp

Filesize
296KB

Download
memory/1252-61-0x0000000000400000-0x000000000044A000-memory.dmp

Filesize
296KB

Download
memory/1252-65-0x0000000000400000-0x000000000044A000-memory.dmp

Filesize
296KB

Download
memory/1252-64-0x0000000000400000-0x000000000044A000-memory.dmp

Filesize
296KB

Download
memory/1252-66-0x0000000000445ECE-mapping.dmp

Download
memory/1252-68-0x0000000000400000-0x000000000044A000-memory.dmp

Filesize
296KB

Download
memory/1252-70-0x0000000000400000-0x000000000044A000-memory.dmp

Filesize
296KB

Download
memory/1528-57-0x0000000075391000-0x0000000075393000-memory.dmp

Filesize
8KB

Download
memory/1528-56-0x00000000042B0000-0x0000000004302000-memory.dmp

Filesize
328KB

Download
memory/1528-55-0x00000000003F0000-0x00000000003FA000-memory.dmp

Filesize
40KB

Download
memory/1528-54-0x00000000009F0000-0x0000000000A7E000-memory.dmp

Filesize
568KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads