agenttesla | f8e0c40c73b254fabb324d43f617db47f3d1d82c44c4802d66d2949623eab44b

General

Target

RFQ-Al NASR-00388.exe
Size

1.4MB
MD5

a1a7b97334260279dd501040e0d8716c
SHA1

c3aa5d13b6008b5d44084f53eedc524b77730eb2
SHA256

8504a16c9bdf57fb23adb5346dd748e53c828472eed8c59d38159f33a3fa112a
SHA512

fcf9a3923a34dafc09240eb2031a7e35508a40c7547907883717183b833751357c9f2792fb6eb7b1ab2ccc23c6094523e49c76cdb5e0a901631190e4d6c3c513
SSDEEP

12288:jiQyGxHB+0zSaBBg4E/r1wG1OVW2yc5XzaNnfFiCJ47/Z/hS5ZkMvwYV4:mQyehHzSgBrET1BeeIzaNfMZpDtR

Score

10^/10

agenttesla credential_access discovery keylogger persistence spyware stealer trojan

Malware Config

Extracted

Credentials

Protocol: ftp
Host:
ftp.ercolina-usa.com
Port:
21
Username:
[email protected]
Password:
uy,o#mZj8$lY

Extracted

Family

agenttesla

Credentials

Protocol: ftp
Host:
ftp://ftp.ercolina-usa.com
Port:
21
Username:
[email protected]
Password:
uy,o#mZj8$lY

Signatures

AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
keylogger trojan stealer spyware agenttesla
Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
credential_access stealer

Credentials from Web Browsers
T1555.003
Reads WinSCP keys stored on the system 2 TTPs
Tries to access WinSCP stored sessions.
spyware stealer

Data from Local System
T1005

Credentials in Registry
T1552.002
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
T1552.001
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
T1552.001
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
T1552.001

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-1-5-21-2718105630-359604950-2820636825-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\newapp = "C:\\Users\\Admin\\AppData\\Roaming\\newapp\\newapp.exe"	regasm.exe

Looks up external IP address via web service 2 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
12	api.ipify.org
13	api.ipify.org

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2328 set thread context of 1008	2328	RFQ-Al NASR-00388.exe	86

System Location Discovery: System Language Discovery 1 TTPs 1 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	regasm.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1008	regasm.exe
1008	regasm.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1008	regasm.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1008	regasm.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 2328 wrote to memory of 1008	2328	RFQ-Al NASR-00388.exe	86
PID 2328 wrote to memory of 1008	2328	RFQ-Al NASR-00388.exe	86
PID 2328 wrote to memory of 1008	2328	RFQ-Al NASR-00388.exe	86
PID 2328 wrote to memory of 1008	2328	RFQ-Al NASR-00388.exe	86
PID 2328 wrote to memory of 1008	2328	RFQ-Al NASR-00388.exe	86
PID 2328 wrote to memory of 1008	2328	RFQ-Al NASR-00388.exe	86
PID 2328 wrote to memory of 1008	2328	RFQ-Al NASR-00388.exe	86
PID 2328 wrote to memory of 1008	2328	RFQ-Al NASR-00388.exe	86
PID 2328 wrote to memory of 4512	2328	RFQ-Al NASR-00388.exe	87
PID 2328 wrote to memory of 4512	2328	RFQ-Al NASR-00388.exe	87
PID 2328 wrote to memory of 4512	2328	RFQ-Al NASR-00388.exe	87

C:\Users\Admin\AppData\Local\Temp\RFQ-Al NASR-00388.exe
"C:\Users\Admin\AppData\Local\Temp\RFQ-Al NASR-00388.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2328
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe"
  2⤵
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:1008
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe"
  2⤵
  PID:4512

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

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

4

T1552

Credentials In Files

3

T1552.001

Credentials in Registry

1

T1552.002

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Data from Local System

4

T1005

Command and Control

Exfiltration

Impact

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Downloads

memory/1008-12-0x00000000062B0000-0x0000000006300000-memory.dmp

Filesize
320KB

Download
memory/1008-16-0x0000000074390000-0x0000000074B40000-memory.dmp

Filesize
7.7MB

Download
memory/1008-15-0x000000007439E000-0x000000007439F000-memory.dmp

Filesize
4KB

Download
memory/1008-14-0x00000000063C0000-0x00000000063CA000-memory.dmp

Filesize
40KB

Download
memory/1008-4-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download
memory/1008-5-0x000000007439E000-0x000000007439F000-memory.dmp

Filesize
4KB

Download
memory/1008-6-0x00000000053B0000-0x0000000005954000-memory.dmp

Filesize
5.6MB

Download
memory/1008-7-0x0000000004FB0000-0x0000000005016000-memory.dmp

Filesize
408KB

Download
memory/1008-8-0x0000000074390000-0x0000000074B40000-memory.dmp

Filesize
7.7MB

Download
memory/1008-13-0x00000000063E0000-0x0000000006472000-memory.dmp

Filesize
584KB

Download
memory/2328-3-0x000001B237070000-0x000001B237106000-memory.dmp

Filesize
600KB

Download
memory/2328-9-0x00007FFDB74A0000-0x00007FFDB7F61000-memory.dmp

Filesize
10.8MB

Download
memory/2328-0-0x00007FFDB74A3000-0x00007FFDB74A5000-memory.dmp

Filesize
8KB

Download
memory/2328-2-0x00007FFDB74A0000-0x00007FFDB7F61000-memory.dmp

Filesize
10.8MB

Download
memory/2328-1-0x000001B21CAD0000-0x000001B21CB00000-memory.dmp

Filesize
192KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads