agenttesla | 55b0da6efe5800b10b6f47d98c4943652dca7eec1a418dcb5ad828bc667f3e6d

General

Target
Invoice.exe
Size 840KB
Sample210802-v35mtf182a
SHA256 55b0da6efe5800b10b6f47d98c4943652dca7eec1a418dcb5ad828bc667f3e6d
MD5 9f7bc2cea95bbc995e0e1103afc37795
SHA1 968d8ddc582a1ac9420653ee79c714865ba854a1
SHA512 5c4dd1c4bfb3f45d2a1d033650a335f2616f32489d21b75ff8f7a8d815006ff8ccd1a1827d1feecd2582c400ddebe850341ddb91a2233b32973f9264579470df
MD5 SHA1 SHA512

Score

10^/10

agenttesla keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol
smtp
Host
us2.smtp.mailhostbox.com
Port
587
Username
[email protected]
Password
gibson.1990

Signatures

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

AgentTesla Payload 3 IoCs

resource	yara_rule
behavioral1/memory/2000-64-0x000000000043760E-mapping.dmp	family_agenttesla
behavioral1/memory/2000-63-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla
behavioral1/memory/2000-65-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla

Drops file in Drivers directory 1 IoCs

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

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

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Windows\CurrentVersion\Run\NXLun = "C:\\Users\\Admin\\AppData\\Roaming\\NXLun\\NXLun.exe"	Invoice.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1820 set thread context of 2000	1820	Invoice.exe	26

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2000	Invoice.exe
2000	Invoice.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2000	Invoice.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 1820 wrote to memory of 2000	1820	Invoice.exe	26
PID 1820 wrote to memory of 2000	1820	Invoice.exe	26
PID 1820 wrote to memory of 2000	1820	Invoice.exe	26
PID 1820 wrote to memory of 2000	1820	Invoice.exe	26
PID 1820 wrote to memory of 2000	1820	Invoice.exe	26
PID 1820 wrote to memory of 2000	1820	Invoice.exe	26
PID 1820 wrote to memory of 2000	1820	Invoice.exe	26
PID 1820 wrote to memory of 2000	1820	Invoice.exe	26
PID 1820 wrote to memory of 2000	1820	Invoice.exe	26

C:\Users\Admin\AppData\Local\Temp\Invoice.exe
"C:\Users\Admin\AppData\Local\Temp\Invoice.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1820
- C:\Users\Admin\AppData\Local\Temp\Invoice.exe
  "C:\Users\Admin\AppData\Local\Temp\Invoice.exe"
  2⤵
  - Drops file in Drivers directory
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2000

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Credentials in Files

3

T1081

Discovery

Lateral Movement

Collection

Data from Local System

3

T1005

Command and Control

Exfiltration

Impact

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Downloads

memory/1820-59-0x0000000000870000-0x0000000000871000-memory.dmp

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memory/1820-61-0x00000000021B0000-0x0000000002218000-memory.dmp

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memory/1820-62-0x0000000000300000-0x000000000030F000-memory.dmp

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memory/1820-67-0x00000000022E0000-0x00000000022E1000-memory.dmp

Download

memory/2000-63-0x0000000000400000-0x000000000043C000-memory.dmp

Download

memory/2000-65-0x0000000000400000-0x000000000043C000-memory.dmp

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memory/2000-68-0x0000000000740000-0x0000000000741000-memory.dmp

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memory/2000-69-0x0000000000741000-0x0000000000742000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads