agenttesla | 16d82530ebe9491a76946b33ca441bf9f61bb5cc4404611746775a3157e7bd43

General

Target

Doc-CS3.exe
Size

548KB
MD5

c9fa29e6e303450e5c9890518d27ebfa
SHA1

314d358046143e4d4dd88e3d7dc0db9e9b999947
SHA256

be91eb148b36528adb2b49362c50a099cf0cfbf5f1d5bd18ce88751b3c779ae6
SHA512

a634a6657ae92b28cbb6896c92cdaa5be866f12d5106523bb8363e290dbebfea0381cf08d1f7ec93a1d127ba551b2e80170383fee5f2a57bd3030e3da1aaedca

Score

10^/10

agenttesla collection keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.alraedsecurity.com
Port:
587
Username:
tauseef@alraedsecurity.com
Password:
Alraed99pass@

Signatures

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

AgentTesla Payload 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/540-63-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla
behavioral1/memory/540-64-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla
behavioral1/memory/540-65-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla
behavioral1/memory/540-66-0x00000000004374BE-mapping.dmp	family_agenttesla
behavioral1/memory/540-67-0x0000000000400000-0x000000000043C000-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:

Doc-CS3.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Doc-CS3.exe
Key opened	\REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Doc-CS3.exe
Key opened	\REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Doc-CS3.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

Doc-CS3.exe

description pid process target process

PID 1392 set thread context of 540 1392 Doc-CS3.exe Doc-CS3.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

320 schtasks.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

Doc-CS3.exe

pid process

540 Doc-CS3.exe
540 Doc-CS3.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

Doc-CS3.exe

description pid process

Token: SeDebugPrivilege 540 Doc-CS3.exe

description	pid	process	target process
PID 1392 set thread context of 540	1392	Doc-CS3.exe	Doc-CS3.exe

pid	process
320	schtasks.exe

pid	process
540	Doc-CS3.exe
540	Doc-CS3.exe

description	pid	process
Token: SeDebugPrivilege	540	Doc-CS3.exe

Suspicious use of WriteProcessMemory 13 IoCs

Processes:

Doc-CS3.exe

description	pid	process	target process
PID 1392 wrote to memory of 320	1392	Doc-CS3.exe	schtasks.exe
PID 1392 wrote to memory of 320	1392	Doc-CS3.exe	schtasks.exe
PID 1392 wrote to memory of 320	1392	Doc-CS3.exe	schtasks.exe
PID 1392 wrote to memory of 320	1392	Doc-CS3.exe	schtasks.exe
PID 1392 wrote to memory of 540	1392	Doc-CS3.exe	Doc-CS3.exe
PID 1392 wrote to memory of 540	1392	Doc-CS3.exe	Doc-CS3.exe
PID 1392 wrote to memory of 540	1392	Doc-CS3.exe	Doc-CS3.exe
PID 1392 wrote to memory of 540	1392	Doc-CS3.exe	Doc-CS3.exe
PID 1392 wrote to memory of 540	1392	Doc-CS3.exe	Doc-CS3.exe
PID 1392 wrote to memory of 540	1392	Doc-CS3.exe	Doc-CS3.exe
PID 1392 wrote to memory of 540	1392	Doc-CS3.exe	Doc-CS3.exe
PID 1392 wrote to memory of 540	1392	Doc-CS3.exe	Doc-CS3.exe
PID 1392 wrote to memory of 540	1392	Doc-CS3.exe	Doc-CS3.exe

outlook_office_path 1 IoCs

Processes:

Doc-CS3.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Doc-CS3.exe

outlook_win_path 1 IoCs

Processes:

Doc-CS3.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Doc-CS3.exe

C:\Users\Admin\AppData\Local\Temp\Doc-CS3.exe
"C:\Users\Admin\AppData\Local\Temp\Doc-CS3.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1392

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\aUOJHYNvJTDQFG" /XML "C:\Users\Admin\AppData\Local\Temp\tmpA6E9.tmp"
2⤵
- Creates scheduled task(s)
PID:320

C:\Users\Admin\AppData\Local\Temp\Doc-CS3.exe
"C:\Users\Admin\AppData\Local\Temp\Doc-CS3.exe"
2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:540

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

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

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Downloads

memory/320-60-0x0000000000000000-mapping.dmp

Download
memory/540-64-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/540-66-0x00000000004374BE-mapping.dmp

Download
memory/540-70-0x0000000004C01000-0x0000000004C02000-memory.dmp

Filesize
4KB

Download
memory/540-69-0x0000000004C00000-0x0000000004C01000-memory.dmp

Filesize
4KB

Download
memory/540-67-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/540-61-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/540-62-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/540-63-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/540-65-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/1392-54-0x0000000001130000-0x0000000001131000-memory.dmp

Filesize
4KB

Download
memory/1392-57-0x0000000004CC0000-0x0000000004CC1000-memory.dmp

Filesize
4KB

Download
memory/1392-56-0x00000000767F1000-0x00000000767F3000-memory.dmp

Filesize
8KB

Download
memory/1392-59-0x0000000004E50000-0x0000000004ECC000-memory.dmp

Filesize
496KB

Download
memory/1392-58-0x00000000002E0000-0x00000000002E5000-memory.dmp

Filesize
20KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads