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 3 IoCs

Processes:

resource	yara_rule
behavioral2/memory/1792-125-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla
behavioral2/memory/1792-126-0x00000000004374BE-mapping.dmp	family_agenttesla
behavioral2/memory/1792-132-0x0000000005090000-0x000000000558E000-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-1-5-21-2481030822-2828258191-1606198294-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Doc-CS3.exe
Key opened	\REGISTRY\USER\S-1-5-21-2481030822-2828258191-1606198294-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Doc-CS3.exe
Key opened	\REGISTRY\USER\S-1-5-21-2481030822-2828258191-1606198294-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Doc-CS3.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

Doc-CS3.exe

description pid process target process

PID 2124 set thread context of 1792 2124 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

1684 schtasks.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

Doc-CS3.exe

pid process

1792 Doc-CS3.exe
1792 Doc-CS3.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

Doc-CS3.exe

description pid process

Token: SeDebugPrivilege 1792 Doc-CS3.exe

description	pid	process	target process
PID 2124 set thread context of 1792	2124	Doc-CS3.exe	Doc-CS3.exe

pid	process
1684	schtasks.exe

pid	process
1792	Doc-CS3.exe
1792	Doc-CS3.exe

description	pid	process
Token: SeDebugPrivilege	1792	Doc-CS3.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

Doc-CS3.exe

description	pid	process	target process
PID 2124 wrote to memory of 1684	2124	Doc-CS3.exe	schtasks.exe
PID 2124 wrote to memory of 1684	2124	Doc-CS3.exe	schtasks.exe
PID 2124 wrote to memory of 1684	2124	Doc-CS3.exe	schtasks.exe
PID 2124 wrote to memory of 1792	2124	Doc-CS3.exe	Doc-CS3.exe
PID 2124 wrote to memory of 1792	2124	Doc-CS3.exe	Doc-CS3.exe
PID 2124 wrote to memory of 1792	2124	Doc-CS3.exe	Doc-CS3.exe
PID 2124 wrote to memory of 1792	2124	Doc-CS3.exe	Doc-CS3.exe
PID 2124 wrote to memory of 1792	2124	Doc-CS3.exe	Doc-CS3.exe
PID 2124 wrote to memory of 1792	2124	Doc-CS3.exe	Doc-CS3.exe
PID 2124 wrote to memory of 1792	2124	Doc-CS3.exe	Doc-CS3.exe
PID 2124 wrote to memory of 1792	2124	Doc-CS3.exe	Doc-CS3.exe

outlook_office_path 1 IoCs

Processes:

Doc-CS3.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2481030822-2828258191-1606198294-1000\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-1-5-21-2481030822-2828258191-1606198294-1000\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:2124

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\aUOJHYNvJTDQFG" /XML "C:\Users\Admin\AppData\Local\Temp\tmp76C2.tmp"
2⤵
- Creates scheduled task(s)
PID:1684

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:1792

Network

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\Doc-CS3.exe.log
MD5
0c2899d7c6746f42d5bbe088c777f94c

SHA1
622f66c5f7a3c91b28a9f43ce7c6cabadbf514f1

SHA256
5b0b99740cadaeff7b9891136644b396941547e20cc7eea646560d0dad5a5458

SHA512
ab7a3409ed4b6ca00358330a3aa4ef6de7d81eb21a5e24bb629ef6a7c7c4e2a70ca3accfbc989ed6e495fdb8eb6203a26d6f2a37b2a5809af4276af375b49078

Download Submit
memory/1684-124-0x0000000000000000-mapping.dmp

Download
memory/1792-134-0x0000000005D80000-0x0000000005D81000-memory.dmp

Filesize
4KB

Download
memory/1792-133-0x0000000005230000-0x0000000005231000-memory.dmp

Filesize
4KB

Download
memory/1792-132-0x0000000005090000-0x000000000558E000-memory.dmp

Filesize
5.0MB

Download
memory/1792-126-0x00000000004374BE-mapping.dmp

Download
memory/1792-125-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/2124-119-0x00000000058A0000-0x00000000058A1000-memory.dmp

Filesize
4KB

Download
memory/2124-123-0x0000000006810000-0x000000000688C000-memory.dmp

Filesize
496KB

Download
memory/2124-122-0x0000000006670000-0x0000000006671000-memory.dmp

Filesize
4KB

Download
memory/2124-121-0x00000000057D0000-0x0000000005CCE000-memory.dmp

Filesize
5.0MB

Download
memory/2124-120-0x0000000005BE0000-0x0000000005BE5000-memory.dmp

Filesize
20KB

Download
memory/2124-115-0x0000000000FE0000-0x0000000000FE1000-memory.dmp

Filesize
4KB

Download
memory/2124-118-0x00000000058B0000-0x00000000058B1000-memory.dmp

Filesize
4KB

Download
memory/2124-117-0x0000000005CD0000-0x0000000005CD1000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

Loading Replay Monitor...

Downloads