agenttesla | 35578304585f5d4ab8a08c8c4132a357a1630b4f47123a971c0950945a8069e1

General

Target

grace.exe
Size

750KB
MD5

dd45870570b5eeabe6ecec62a093fced
SHA1

c6364fe561cd82f0ac20d6beb23655b188c7d2f4
SHA256

8cdc238ef7df045b66f34ff099f05f4bbf42a6d262b0f3cf6a224a2ea95f4505
SHA512

3ede737c03ee4f2d67e30390726ad6359842a6aa59e6e8d9c56d89fd0bb45e865162fcbcfc41a78c2da56325d8fa88156c32ddc1f592eac78b3ee7199db43dbc

Score

10^/10

agenttesla collection keylogger spyware stealer trojan upx

Malware Config

Signatures

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

AgentTesla Payload 12 IoCs

Processes:

resource	yara_rule
behavioral2/memory/1348-133-0x0000000000350000-0x000000000039C000-memory.dmp	family_agenttesla
behavioral2/memory/1348-139-0x0000000000350000-0x000000000039C000-memory.dmp	family_agenttesla
behavioral2/memory/1348-140-0x0000000000350000-0x000000000039C000-memory.dmp	family_agenttesla
behavioral2/memory/1348-141-0x0000000000350000-0x000000000039C000-memory.dmp	family_agenttesla
behavioral2/memory/1348-142-0x0000000000350000-0x000000000039C000-memory.dmp	family_agenttesla
behavioral2/memory/1348-146-0x0000000000350000-0x000000000039C000-memory.dmp	family_agenttesla
behavioral2/memory/1348-144-0x0000000000350000-0x000000000039C000-memory.dmp	family_agenttesla
behavioral2/memory/1348-147-0x0000000000350000-0x000000000039C000-memory.dmp	family_agenttesla
behavioral2/memory/1348-150-0x0000000000350000-0x000000000039C000-memory.dmp	family_agenttesla
behavioral2/memory/1348-152-0x0000000000350000-0x000000000039C000-memory.dmp	family_agenttesla
behavioral2/memory/1348-153-0x0000000000350000-0x000000000039C000-memory.dmp	family_agenttesla
behavioral2/memory/1348-155-0x0000000000350000-0x000000000039C000-memory.dmp	family_agenttesla

UPX packed file 3 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

Processes:

resource	yara_rule
behavioral2/memory/1736-130-0x0000000000A00000-0x0000000000BA2000-memory.dmp	upx
behavioral2/memory/1736-131-0x0000000000A00000-0x0000000000BA2000-memory.dmp	upx
behavioral2/memory/1736-138-0x0000000000A00000-0x0000000000BA2000-memory.dmp	upx

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:

RegAsm.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key opened	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key opened	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe

Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow ioc

29 checkip.amazonaws.com

flow	ioc
29	checkip.amazonaws.com

AutoIT Executable 2 IoCs

AutoIT scripts compiled to PE executables.

Processes:

resource	yara_rule
behavioral2/memory/1736-131-0x0000000000A00000-0x0000000000BA2000-memory.dmp	autoit_exe
behavioral2/memory/1736-138-0x0000000000A00000-0x0000000000BA2000-memory.dmp	autoit_exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

grace.exe

description pid process target process

PID 1736 set thread context of 1348 1736 grace.exe RegAsm.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

RegAsm.exe

pid process

1348 RegAsm.exe
1348 RegAsm.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

RegAsm.exe

description pid process

Token: SeDebugPrivilege 1348 RegAsm.exe
Suspicious use of FindShellTrayWindow 4 IoCs

Processes:

grace.exe

pid process

1736 grace.exe
1736 grace.exe
1736 grace.exe
1736 grace.exe
Suspicious use of SendNotifyMessage 4 IoCs

Processes:

grace.exe

pid process

1736 grace.exe
1736 grace.exe
1736 grace.exe
1736 grace.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

RegAsm.exe

pid process

1348 RegAsm.exe

description	pid	process	target process
PID 1736 set thread context of 1348	1736	grace.exe	RegAsm.exe

pid	process
1348	RegAsm.exe
1348	RegAsm.exe

description	pid	process
Token: SeDebugPrivilege	1348	RegAsm.exe

pid	process
1736	grace.exe
1736	grace.exe
1736	grace.exe
1736	grace.exe

pid	process
1736	grace.exe
1736	grace.exe
1736	grace.exe
1736	grace.exe

pid	process
1348	RegAsm.exe

Suspicious use of WriteProcessMemory 5 IoCs

Processes:

grace.exe

description	pid	process	target process
PID 1736 wrote to memory of 1348	1736	grace.exe	RegAsm.exe
PID 1736 wrote to memory of 1348	1736	grace.exe	RegAsm.exe
PID 1736 wrote to memory of 1348	1736	grace.exe	RegAsm.exe
PID 1736 wrote to memory of 1348	1736	grace.exe	RegAsm.exe
PID 1736 wrote to memory of 1348	1736	grace.exe	RegAsm.exe

outlook_office_path 1 IoCs

Processes:

RegAsm.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe

outlook_win_path 1 IoCs

Processes:

RegAsm.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe

C:\Users\Admin\AppData\Local\Temp\grace.exe
"C:\Users\Admin\AppData\Local\Temp\grace.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1736

C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
"C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"
2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- outlook_office_path
- outlook_win_path
PID:1348

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

3

T1081

Discovery

Lateral Movement

Collection

Data from Local System

3

T1005

Email Collection

1

T1114

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/1348-150-0x0000000000350000-0x000000000039C000-memory.dmp

Filesize
304KB

Download
memory/1348-132-0x0000000000000000-mapping.dmp

Download
memory/1348-146-0x0000000000350000-0x000000000039C000-memory.dmp

Filesize
304KB

Download
memory/1348-144-0x0000000000350000-0x000000000039C000-memory.dmp

Filesize
304KB

Download
memory/1348-142-0x0000000000350000-0x000000000039C000-memory.dmp

Filesize
304KB

Download
memory/1348-139-0x0000000000350000-0x000000000039C000-memory.dmp

Filesize
304KB

Download
memory/1348-140-0x0000000000350000-0x000000000039C000-memory.dmp

Filesize
304KB

Download
memory/1348-141-0x0000000000350000-0x000000000039C000-memory.dmp

Filesize
304KB

Download
memory/1348-157-0x00000000747C0000-0x0000000074D71000-memory.dmp

Filesize
5.7MB

Download
memory/1348-156-0x00000000747C0000-0x0000000074D71000-memory.dmp

Filesize
5.7MB

Download
memory/1348-133-0x0000000000350000-0x000000000039C000-memory.dmp

Filesize
304KB

Download
memory/1348-147-0x0000000000350000-0x000000000039C000-memory.dmp

Filesize
304KB

Download
memory/1348-155-0x0000000000350000-0x000000000039C000-memory.dmp

Filesize
304KB

Download
memory/1348-152-0x0000000000350000-0x000000000039C000-memory.dmp

Filesize
304KB

Download
memory/1348-153-0x0000000000350000-0x000000000039C000-memory.dmp

Filesize
304KB

Download
memory/1736-130-0x0000000000A00000-0x0000000000BA2000-memory.dmp

Filesize
1.6MB

Download
memory/1736-131-0x0000000000A00000-0x0000000000BA2000-memory.dmp

Filesize
1.6MB

Download
memory/1736-138-0x0000000000A00000-0x0000000000BA2000-memory.dmp

Filesize
1.6MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads