agenttesla | d94d8b336a0abcfb47c21091d7e6ea47539cdb4a16c378ea3aa54ee28c15b7c9

General

Target

invoice.exe
Size

1.0MB
MD5

ffce81b27dd34935f5371161cc84891b
SHA1

a55136da4f4640bde0732f586b07e878be9d6c94
SHA256

d94d8b336a0abcfb47c21091d7e6ea47539cdb4a16c378ea3aa54ee28c15b7c9
SHA512

97e3c58cb513baa37b2e83c3704bbdca5886b51c0b780e12e84029683c3f9fab93966e68b0153aba2506dfe7dc3d04e275e5003e10f52a2b8f9d1b1b86244bbd

Score

10^/10

agenttesla keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.marcer.com.tr
Port:
587
Username:
muhasebe@marcer.com.tr
Password:
mar1453

Signatures

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

AgentTesla Payload 3 IoCs

Processes:

resource	yara_rule
behavioral1/memory/580-67-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla
behavioral1/memory/580-68-0x000000000043760E-mapping.dmp	family_agenttesla
behavioral1/memory/580-69-0x0000000000400000-0x000000000043C000-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

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-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Windows\CurrentVersion\Run\kprUEGC = "C:\\Users\\Admin\\AppData\\Roaming\\kprUEGC\\kprUEGC.exe"	invoice.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

invoice.exe

description pid process target process

PID 1644 set thread context of 580 1644 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

524 schtasks.exe
Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

invoice.exeinvoice.exe

pid process

1644 invoice.exe
580 invoice.exe
580 invoice.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

invoice.exeinvoice.exe

description pid process

Token: SeDebugPrivilege 1644 invoice.exe
Token: SeDebugPrivilege 580 invoice.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

invoice.exe

pid process

580 invoice.exe

description	pid	process	target process
PID 1644 set thread context of 580	1644	invoice.exe	invoice.exe

pid	process
524	schtasks.exe

pid	process
1644	invoice.exe
580	invoice.exe
580	invoice.exe

description	pid	process
Token: SeDebugPrivilege	1644	invoice.exe
Token: SeDebugPrivilege	580	invoice.exe

pid	process
580	invoice.exe

Suspicious use of WriteProcessMemory 13 IoCs

Processes:

invoice.exe

description	pid	process	target process
PID 1644 wrote to memory of 524	1644	invoice.exe	schtasks.exe
PID 1644 wrote to memory of 524	1644	invoice.exe	schtasks.exe
PID 1644 wrote to memory of 524	1644	invoice.exe	schtasks.exe
PID 1644 wrote to memory of 524	1644	invoice.exe	schtasks.exe
PID 1644 wrote to memory of 580	1644	invoice.exe	invoice.exe
PID 1644 wrote to memory of 580	1644	invoice.exe	invoice.exe
PID 1644 wrote to memory of 580	1644	invoice.exe	invoice.exe
PID 1644 wrote to memory of 580	1644	invoice.exe	invoice.exe
PID 1644 wrote to memory of 580	1644	invoice.exe	invoice.exe
PID 1644 wrote to memory of 580	1644	invoice.exe	invoice.exe
PID 1644 wrote to memory of 580	1644	invoice.exe	invoice.exe
PID 1644 wrote to memory of 580	1644	invoice.exe	invoice.exe
PID 1644 wrote to memory of 580	1644	invoice.exe	invoice.exe

C:\Users\Admin\AppData\Local\Temp\invoice.exe
"C:\Users\Admin\AppData\Local\Temp\invoice.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1644

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\WjthBIdkPPkva" /XML "C:\Users\Admin\AppData\Local\Temp\tmp447F.tmp"
2⤵
- Creates scheduled task(s)
PID:524

C:\Users\Admin\AppData\Local\Temp\invoice.exe
"{path}"
2⤵
- Drops file in Drivers directory
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:580

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

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp447F.tmp
MD5
3abd69a7bff8704f57e19072d77cc155

SHA1
912d59479f9de47e71591648570b4577efb97690

SHA256
d99ede4897c6c23e0d3cd43070f0bba3dc207303b0c2fa74438697333fe9cb2f

SHA512
8e0135e54418b7c22d8bc4d12e5c80f03ca8fd69fabfac820d7f467e184c0dcce442ad2c79ee4ffb123d0b34978457561ee458035b527d09906da2a986c65289

Download Submit
memory/524-65-0x0000000000000000-mapping.dmp

Download
memory/580-67-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/580-68-0x000000000043760E-mapping.dmp

Download
memory/580-69-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/580-71-0x0000000004E50000-0x0000000004E51000-memory.dmp

Filesize
4KB

Download
memory/580-72-0x0000000004E51000-0x0000000004E52000-memory.dmp

Filesize
4KB

Download
memory/1644-59-0x0000000000910000-0x0000000000911000-memory.dmp

Filesize
4KB

Download
memory/1644-61-0x00000000073B0000-0x00000000073B1000-memory.dmp

Filesize
4KB

Download
memory/1644-62-0x00000000003B0000-0x00000000003B2000-memory.dmp

Filesize
8KB

Download
memory/1644-63-0x0000000007FA0000-0x0000000008054000-memory.dmp

Filesize
720KB

Download
memory/1644-64-0x0000000007690000-0x000000000770A000-memory.dmp

Filesize
488KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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