agenttesla | cf87855e0b967b5902a50932cfeab8aebefef4034c9f4bde31df448e28455101

General

Target

cf87855e0b967b5902a50932cfeab8aebefef4034c9f4bde31df448e28455101.exe
Size

501KB
MD5

3796b911951b048081a1a7829465f85b
SHA1

d07fb3c24272525dcb467445e3ddacf5072938a9
SHA256

cf87855e0b967b5902a50932cfeab8aebefef4034c9f4bde31df448e28455101
SHA512

9f549d4f1b156e9fd129950f69583f3a9156bd40230b6fb00d68a42c35fc8f7af6b48a7bf08d6fee254667a5e3cb496cc11afafe39d21b1b760c1be21b62c467
SSDEEP

12288:y2ZyhvUi2iNPmCEdbrom61QUP7faoMNp7sklOYT:pghUi1lEdbrKzyJg+T

Score

10^/10

agenttesla collection credential_access discovery keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
us2.smtp.mailhostbox.com
Port:
587
Username:
[email protected]
Password:
project2021blessing

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/4408-11-0x0000000000400000-0x000000000043C000-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-1-5-21-3350944739-639801879-157714471-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe
Key opened	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe
Key opened	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\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-1-5-21-3350944739-639801879-157714471-1000\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 4964 set thread context of 4408	4964	cf87855e0b967b5902a50932cfeab8aebefef4034c9f4bde31df448e28455101.exe	88

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	cf87855e0b967b5902a50932cfeab8aebefef4034c9f4bde31df448e28455101.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegSvcs.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4964	cf87855e0b967b5902a50932cfeab8aebefef4034c9f4bde31df448e28455101.exe
4964	cf87855e0b967b5902a50932cfeab8aebefef4034c9f4bde31df448e28455101.exe
4408	RegSvcs.exe
4408	RegSvcs.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4964	cf87855e0b967b5902a50932cfeab8aebefef4034c9f4bde31df448e28455101.exe
Token: SeDebugPrivilege	4408	RegSvcs.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 4964 wrote to memory of 4408	4964	cf87855e0b967b5902a50932cfeab8aebefef4034c9f4bde31df448e28455101.exe	88
PID 4964 wrote to memory of 4408	4964	cf87855e0b967b5902a50932cfeab8aebefef4034c9f4bde31df448e28455101.exe	88
PID 4964 wrote to memory of 4408	4964	cf87855e0b967b5902a50932cfeab8aebefef4034c9f4bde31df448e28455101.exe	88
PID 4964 wrote to memory of 4408	4964	cf87855e0b967b5902a50932cfeab8aebefef4034c9f4bde31df448e28455101.exe	88
PID 4964 wrote to memory of 4408	4964	cf87855e0b967b5902a50932cfeab8aebefef4034c9f4bde31df448e28455101.exe	88
PID 4964 wrote to memory of 4408	4964	cf87855e0b967b5902a50932cfeab8aebefef4034c9f4bde31df448e28455101.exe	88
PID 4964 wrote to memory of 4408	4964	cf87855e0b967b5902a50932cfeab8aebefef4034c9f4bde31df448e28455101.exe	88
PID 4964 wrote to memory of 4408	4964	cf87855e0b967b5902a50932cfeab8aebefef4034c9f4bde31df448e28455101.exe	88

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe

C:\Users\Admin\AppData\Local\Temp\cf87855e0b967b5902a50932cfeab8aebefef4034c9f4bde31df448e28455101.exe
"C:\Users\Admin\AppData\Local\Temp\cf87855e0b967b5902a50932cfeab8aebefef4034c9f4bde31df448e28455101.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4964
- 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:4408

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/4408-11-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/4408-24-0x0000000074EB0000-0x0000000075660000-memory.dmp

Filesize
7.7MB

Download
memory/4408-23-0x0000000074EB0000-0x0000000075660000-memory.dmp

Filesize
7.7MB

Download
memory/4408-22-0x0000000006470000-0x00000000064C0000-memory.dmp

Filesize
320KB

Download
memory/4408-19-0x0000000074EB0000-0x0000000075660000-memory.dmp

Filesize
7.7MB

Download
memory/4408-18-0x0000000074EB0000-0x0000000075660000-memory.dmp

Filesize
7.7MB

Download
memory/4408-17-0x0000000005FF0000-0x0000000006056000-memory.dmp

Filesize
408KB

Download
memory/4408-16-0x0000000005650000-0x0000000005668000-memory.dmp

Filesize
96KB

Download
memory/4408-15-0x0000000074EB0000-0x0000000075660000-memory.dmp

Filesize
7.7MB

Download
memory/4408-13-0x0000000074EB0000-0x0000000075660000-memory.dmp

Filesize
7.7MB

Download
memory/4964-5-0x0000000005460000-0x000000000546A000-memory.dmp

Filesize
40KB

Download
memory/4964-10-0x00000000064D0000-0x0000000006530000-memory.dmp

Filesize
384KB

Download
memory/4964-9-0x0000000006280000-0x000000000631C000-memory.dmp

Filesize
624KB

Download
memory/4964-14-0x0000000074EB0000-0x0000000075660000-memory.dmp

Filesize
7.7MB

Download
memory/4964-8-0x0000000074EB0000-0x0000000075660000-memory.dmp

Filesize
7.7MB

Download
memory/4964-7-0x0000000074EBE000-0x0000000074EBF000-memory.dmp

Filesize
4KB

Download
memory/4964-6-0x0000000005840000-0x000000000584E000-memory.dmp

Filesize
56KB

Download
memory/4964-0-0x0000000074EBE000-0x0000000074EBF000-memory.dmp

Filesize
4KB

Download
memory/4964-4-0x0000000074EB0000-0x0000000075660000-memory.dmp

Filesize
7.7MB

Download
memory/4964-3-0x0000000005480000-0x0000000005512000-memory.dmp

Filesize
584KB

Download
memory/4964-2-0x0000000005A30000-0x0000000005FD4000-memory.dmp

Filesize
5.6MB

Download
memory/4964-1-0x00000000009D0000-0x0000000000A54000-memory.dmp

Filesize
528KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads