agenttesla | 4caa07b5c1075d0316e76251c1e95b36dce7be3c737e7e4947cc99a3e7b484f2

General

Target

t4IMlwZMoIeKGQL.exe
Size

645KB
MD5

393f89477fe3d6aabb74cb7ab0c889fd
SHA1

9c08992baeb0373c0996ad09d57abec3d761427e
SHA256

4caa07b5c1075d0316e76251c1e95b36dce7be3c737e7e4947cc99a3e7b484f2
SHA512

b5ec43a8edb371725b84f7cda5da60b30efa2c7ef734fa3a1aa5655e7125b9514f8fecb1b0d6f31f33a23148ce63ec008ae11389a5d487d24782aab99c62fd9a

Score

10^/10

agenttesla collection keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.lahaciendamontericogrande.com.pe
Port:
587
Username:
[email protected]
Password:
e$$

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/528-61-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla
behavioral1/memory/528-62-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla
behavioral1/memory/528-63-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla
behavioral1/memory/528-64-0x000000000043765E-mapping.dmp	family_agenttesla
behavioral1/memory/528-65-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla

Drops file in Drivers directory 1 IoCs

Processes:

RegSvcs.exe

description ioc process

File opened for modification C:\Windows\system32\drivers\etc\hosts RegSvcs.exe

description	ioc	process
File opened for modification	C:\Windows\system32\drivers\etc\hosts	RegSvcs.exe

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

Processes:

RegSvcs.exe

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

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

RegSvcs.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Windows\CurrentVersion\Run\NXLun = "C:\\Users\\Admin\\AppData\\Roaming\\NXLun\\NXLun.exe"	RegSvcs.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

t4IMlwZMoIeKGQL.exe

description pid process target process

PID 1768 set thread context of 528 1768 t4IMlwZMoIeKGQL.exe RegSvcs.exe
Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

t4IMlwZMoIeKGQL.exeRegSvcs.exe

pid process

1768 t4IMlwZMoIeKGQL.exe
1768 t4IMlwZMoIeKGQL.exe
528 RegSvcs.exe
528 RegSvcs.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

t4IMlwZMoIeKGQL.exeRegSvcs.exe

description pid process

Token: SeDebugPrivilege 1768 t4IMlwZMoIeKGQL.exe
Token: SeDebugPrivilege 528 RegSvcs.exe

description	pid	process	target process
PID 1768 set thread context of 528	1768	t4IMlwZMoIeKGQL.exe	RegSvcs.exe

pid	process
1768	t4IMlwZMoIeKGQL.exe
1768	t4IMlwZMoIeKGQL.exe
528	RegSvcs.exe
528	RegSvcs.exe

description	pid	process
Token: SeDebugPrivilege	1768	t4IMlwZMoIeKGQL.exe
Token: SeDebugPrivilege	528	RegSvcs.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

t4IMlwZMoIeKGQL.exe

description	pid	process	target process
PID 1768 wrote to memory of 528	1768	t4IMlwZMoIeKGQL.exe	RegSvcs.exe
PID 1768 wrote to memory of 528	1768	t4IMlwZMoIeKGQL.exe	RegSvcs.exe
PID 1768 wrote to memory of 528	1768	t4IMlwZMoIeKGQL.exe	RegSvcs.exe
PID 1768 wrote to memory of 528	1768	t4IMlwZMoIeKGQL.exe	RegSvcs.exe
PID 1768 wrote to memory of 528	1768	t4IMlwZMoIeKGQL.exe	RegSvcs.exe
PID 1768 wrote to memory of 528	1768	t4IMlwZMoIeKGQL.exe	RegSvcs.exe
PID 1768 wrote to memory of 528	1768	t4IMlwZMoIeKGQL.exe	RegSvcs.exe
PID 1768 wrote to memory of 528	1768	t4IMlwZMoIeKGQL.exe	RegSvcs.exe
PID 1768 wrote to memory of 528	1768	t4IMlwZMoIeKGQL.exe	RegSvcs.exe
PID 1768 wrote to memory of 528	1768	t4IMlwZMoIeKGQL.exe	RegSvcs.exe
PID 1768 wrote to memory of 528	1768	t4IMlwZMoIeKGQL.exe	RegSvcs.exe
PID 1768 wrote to memory of 528	1768	t4IMlwZMoIeKGQL.exe	RegSvcs.exe

outlook_office_path 1 IoCs

Processes:

RegSvcs.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	RegSvcs.exe

outlook_win_path 1 IoCs

Processes:

RegSvcs.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	RegSvcs.exe

C:\Users\Admin\AppData\Local\Temp\t4IMlwZMoIeKGQL.exe
"C:\Users\Admin\AppData\Local\Temp\t4IMlwZMoIeKGQL.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1768

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
2⤵
- Drops file in Drivers directory
- Accesses Microsoft Outlook profiles
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:528

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Lateral Movement

Collection

Email Collection

1

T1114

Exfiltration

Command and Control

Impact

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Downloads

memory/528-63-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/528-62-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/528-68-0x0000000004AE1000-0x0000000004AE2000-memory.dmp

Filesize
4KB

Download
memory/528-67-0x0000000004AE0000-0x0000000004AE1000-memory.dmp

Filesize
4KB

Download
memory/528-65-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/528-59-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/528-61-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/528-60-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/528-64-0x000000000043765E-mapping.dmp

Download
memory/1768-53-0x0000000000870000-0x0000000000871000-memory.dmp

Filesize
4KB

Download
memory/1768-55-0x0000000075821000-0x0000000075823000-memory.dmp

Filesize
8KB

Download
memory/1768-58-0x0000000005760000-0x00000000057F4000-memory.dmp

Filesize
592KB

Download
memory/1768-57-0x0000000000730000-0x0000000000735000-memory.dmp

Filesize
20KB

Download
memory/1768-56-0x0000000004DE0000-0x0000000004DE1000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads