agenttesla | 1ff2fd90e77ffcfc8abc0248b9c08e460cfb04c1865ad1d3628f26c5b60c5a07

General

Target

RPLTFL024962021.exe
Size

532KB
MD5

000b20cafe3744650b7247750d511876
SHA1

08204bead740b34c4628daf7888ac0a10db4d146
SHA256

de54f743f7013404a6b143790034fbdc9636f75dfb1d914c6c3176ade71d0e61
SHA512

5669912fa0e06a2e1a34466973e3e6028a83cf0ea7fe64fb5cd79878cb3a2cae01533acdd31d17051bd0baa739804c0af1bd57b0e78367863227155fc50f2f45
SSDEEP

12288:U6GEEyLdRgd1pmAkw2TySu7v6rnq+8+qKNI9:UadRqYH1u7ij98+I

Score

10^/10

agenttesla collection credential_access discovery keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
uscentral50.myserverhosts.com
Port:
587
Username:
[email protected]
Password:
waters@789

Signatures

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

AgentTesla payload 1 IoCs

resource	yara_rule
behavioral2/memory/4780-11-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla

Drops file in Drivers directory 1 IoCs

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

Unsecured Credentials: Credentials In Files 1 TTPs
Steal credentials from unsecured files.
credential_access stealer

Credentials In Files
T1552.001

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe
Key opened	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe
Key opened	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\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

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\NXLun = "C:\\Users\\Admin\\AppData\\Roaming\\NXLun\\NXLun.exe"	RegSvcs.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3148 set thread context of 4780	3148	RPLTFL024962021.exe	99

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RPLTFL024962021.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegSvcs.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
3148	RPLTFL024962021.exe
3148	RPLTFL024962021.exe
3148	RPLTFL024962021.exe
3148	RPLTFL024962021.exe
4780	RegSvcs.exe
4780	RegSvcs.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3148	RPLTFL024962021.exe
Token: SeDebugPrivilege	4780	RegSvcs.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 3148 wrote to memory of 1304	3148	RPLTFL024962021.exe	98
PID 3148 wrote to memory of 1304	3148	RPLTFL024962021.exe	98
PID 3148 wrote to memory of 1304	3148	RPLTFL024962021.exe	98
PID 3148 wrote to memory of 4780	3148	RPLTFL024962021.exe	99
PID 3148 wrote to memory of 4780	3148	RPLTFL024962021.exe	99
PID 3148 wrote to memory of 4780	3148	RPLTFL024962021.exe	99
PID 3148 wrote to memory of 4780	3148	RPLTFL024962021.exe	99
PID 3148 wrote to memory of 4780	3148	RPLTFL024962021.exe	99
PID 3148 wrote to memory of 4780	3148	RPLTFL024962021.exe	99
PID 3148 wrote to memory of 4780	3148	RPLTFL024962021.exe	99
PID 3148 wrote to memory of 4780	3148	RPLTFL024962021.exe	99

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe

C:\Users\Admin\AppData\Local\Temp\RPLTFL024962021.exe
"C:\Users\Admin\AppData\Local\Temp\RPLTFL024962021.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3148
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
  2⤵
  PID:1304
- 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
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - outlook_office_path
  - outlook_win_path
  PID:4780

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Email Collection

1

T1114

Command and Control

Exfiltration

Impact

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Downloads

memory/3148-10-0x0000000008D80000-0x0000000008DE0000-memory.dmp

Filesize
384KB

Download
memory/3148-2-0x0000000007AE0000-0x0000000008084000-memory.dmp

Filesize
5.6MB

Download
memory/3148-0-0x0000000074EEE000-0x0000000074EEF000-memory.dmp

Filesize
4KB

Download
memory/3148-3-0x00000000075D0000-0x0000000007662000-memory.dmp

Filesize
584KB

Download
memory/3148-5-0x0000000074EE0000-0x0000000075690000-memory.dmp

Filesize
7.7MB

Download
memory/3148-4-0x00000000029B0000-0x00000000029BA000-memory.dmp

Filesize
40KB

Download
memory/3148-6-0x0000000007A50000-0x0000000007A5E000-memory.dmp

Filesize
56KB

Download
memory/3148-7-0x0000000074EEE000-0x0000000074EEF000-memory.dmp

Filesize
4KB

Download
memory/3148-14-0x0000000074EE0000-0x0000000075690000-memory.dmp

Filesize
7.7MB

Download
memory/3148-9-0x0000000008C30000-0x0000000008CCC000-memory.dmp

Filesize
624KB

Download
memory/3148-8-0x0000000074EE0000-0x0000000075690000-memory.dmp

Filesize
7.7MB

Download
memory/3148-1-0x0000000000620000-0x00000000006AC000-memory.dmp

Filesize
560KB

Download
memory/4780-24-0x0000000074EE0000-0x0000000075690000-memory.dmp

Filesize
7.7MB

Download
memory/4780-13-0x0000000074EE0000-0x0000000075690000-memory.dmp

Filesize
7.7MB

Download
memory/4780-15-0x0000000074EE0000-0x0000000075690000-memory.dmp

Filesize
7.7MB

Download
memory/4780-16-0x0000000005440000-0x0000000005458000-memory.dmp

Filesize
96KB

Download
memory/4780-17-0x00000000061E0000-0x0000000006246000-memory.dmp

Filesize
408KB

Download
memory/4780-18-0x0000000074EE0000-0x0000000075690000-memory.dmp

Filesize
7.7MB

Download
memory/4780-19-0x0000000074EE0000-0x0000000075690000-memory.dmp

Filesize
7.7MB

Download
memory/4780-22-0x00000000012C0000-0x0000000001310000-memory.dmp

Filesize
320KB

Download
memory/4780-23-0x0000000074EE0000-0x0000000075690000-memory.dmp

Filesize
7.7MB

Download
memory/4780-11-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads