Analysis
-
max time kernel
148s -
max time network
151s -
platform
windows10-2004_x64 -
resource
win10v2004-20240802-en -
resource tags
arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system -
submitted
16-09-2024 08:24
Static task
static1
Behavioral task
behavioral1
Sample
Trojan.MSIL.Formbook.AMAJ.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
Trojan.MSIL.Formbook.AMAJ.exe
Resource
win10v2004-20240802-en
General
-
Target
Trojan.MSIL.Formbook.AMAJ.exe
-
Size
655KB
-
MD5
13b35d8e78861524e10b29f6f46a3b20
-
SHA1
457beca2f81d17662524e3a72da416d56df1b86e
-
SHA256
94fcf4577759c6ba44c9bc4672ca962f27f7f92c5f5ddac01e2abf53767ce2df
-
SHA512
e04b6560525aa949328e72672bd75eef7aaef3fcea618d517b45b3844901fe46f027b12e708de42ffe04f64837da746595b121e0e25e8ec5fab41cf454b116da
-
SSDEEP
12288:ncFGdbZ138dNgrF5aMEgAkxzwhR8ZhdDTidYjsYJznwmie0Bd5E8P3N9i72lPkR:KmSniF5zEgAkx8hIBeyI0nw55xVkEK
Malware Config
Extracted
Protocol: smtp- Host:
smtp.strato.de - Port:
587 - Username:
[email protected] - Password:
Oy1)8JSu_qPx(rzV_{Xu
Extracted
agenttesla
Protocol: smtp- Host:
smtp.strato.de - Port:
587 - Username:
[email protected] - Password:
Oy1)8JSu_qPx(rzV_{Xu - Email To:
[email protected]
Signatures
-
AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
-
Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
-
Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
pid Process 3368 powershell.exe 5072 powershell.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-355097885-2402257403-2971294179-1000\Control Panel\International\Geo\Nation Trojan.MSIL.Formbook.AMAJ.exe -
Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
-
Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
-
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
-
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-355097885-2402257403-2971294179-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\zNAKSP = "C:\\Users\\Admin\\AppData\\Roaming\\zNAKSP\\zNAKSP.exe" Trojan.MSIL.Formbook.AMAJ.exe -
Looks up external IP address via web service 3 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
flow ioc 22 ip-api.com 20 api.ipify.org 21 api.ipify.org -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 4604 set thread context of 2348 4604 Trojan.MSIL.Formbook.AMAJ.exe 98 -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
-
System Location Discovery: System Language Discovery 1 TTPs 5 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language Trojan.MSIL.Formbook.AMAJ.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language powershell.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language powershell.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language schtasks.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language Trojan.MSIL.Formbook.AMAJ.exe -
Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
pid Process 1200 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 13 IoCs
pid Process 4604 Trojan.MSIL.Formbook.AMAJ.exe 4604 Trojan.MSIL.Formbook.AMAJ.exe 4604 Trojan.MSIL.Formbook.AMAJ.exe 4604 Trojan.MSIL.Formbook.AMAJ.exe 5072 powershell.exe 3368 powershell.exe 4604 Trojan.MSIL.Formbook.AMAJ.exe 4604 Trojan.MSIL.Formbook.AMAJ.exe 4604 Trojan.MSIL.Formbook.AMAJ.exe 3368 powershell.exe 2348 Trojan.MSIL.Formbook.AMAJ.exe 2348 Trojan.MSIL.Formbook.AMAJ.exe 5072 powershell.exe -
Suspicious use of AdjustPrivilegeToken 4 IoCs
description pid Process Token: SeDebugPrivilege 4604 Trojan.MSIL.Formbook.AMAJ.exe Token: SeDebugPrivilege 5072 powershell.exe Token: SeDebugPrivilege 3368 powershell.exe Token: SeDebugPrivilege 2348 Trojan.MSIL.Formbook.AMAJ.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 2348 Trojan.MSIL.Formbook.AMAJ.exe -
Suspicious use of WriteProcessMemory 20 IoCs
description pid Process procid_target PID 4604 wrote to memory of 5072 4604 Trojan.MSIL.Formbook.AMAJ.exe 91 PID 4604 wrote to memory of 5072 4604 Trojan.MSIL.Formbook.AMAJ.exe 91 PID 4604 wrote to memory of 5072 4604 Trojan.MSIL.Formbook.AMAJ.exe 91 PID 4604 wrote to memory of 3368 4604 Trojan.MSIL.Formbook.AMAJ.exe 93 PID 4604 wrote to memory of 3368 4604 Trojan.MSIL.Formbook.AMAJ.exe 93 PID 4604 wrote to memory of 3368 4604 Trojan.MSIL.Formbook.AMAJ.exe 93 PID 4604 wrote to memory of 1200 4604 Trojan.MSIL.Formbook.AMAJ.exe 95 PID 4604 wrote to memory of 1200 4604 Trojan.MSIL.Formbook.AMAJ.exe 95 PID 4604 wrote to memory of 1200 4604 Trojan.MSIL.Formbook.AMAJ.exe 95 PID 4604 wrote to memory of 1436 4604 Trojan.MSIL.Formbook.AMAJ.exe 97 PID 4604 wrote to memory of 1436 4604 Trojan.MSIL.Formbook.AMAJ.exe 97 PID 4604 wrote to memory of 1436 4604 Trojan.MSIL.Formbook.AMAJ.exe 97 PID 4604 wrote to memory of 2348 4604 Trojan.MSIL.Formbook.AMAJ.exe 98 PID 4604 wrote to memory of 2348 4604 Trojan.MSIL.Formbook.AMAJ.exe 98 PID 4604 wrote to memory of 2348 4604 Trojan.MSIL.Formbook.AMAJ.exe 98 PID 4604 wrote to memory of 2348 4604 Trojan.MSIL.Formbook.AMAJ.exe 98 PID 4604 wrote to memory of 2348 4604 Trojan.MSIL.Formbook.AMAJ.exe 98 PID 4604 wrote to memory of 2348 4604 Trojan.MSIL.Formbook.AMAJ.exe 98 PID 4604 wrote to memory of 2348 4604 Trojan.MSIL.Formbook.AMAJ.exe 98 PID 4604 wrote to memory of 2348 4604 Trojan.MSIL.Formbook.AMAJ.exe 98
Processes
-
C:\Users\Admin\AppData\Local\Temp\Trojan.MSIL.Formbook.AMAJ.exe"C:\Users\Admin\AppData\Local\Temp\Trojan.MSIL.Formbook.AMAJ.exe"1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4604 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\Trojan.MSIL.Formbook.AMAJ.exe"2⤵
- Command and Scripting Interpreter: PowerShell
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:5072
-
-
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\VjpHToGqhIA.exe"2⤵
- Command and Scripting Interpreter: PowerShell
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3368
-
-
C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\VjpHToGqhIA" /XML "C:\Users\Admin\AppData\Local\Temp\tmpAE70.tmp"2⤵
- System Location Discovery: System Language Discovery
- Scheduled Task/Job: Scheduled Task
PID:1200
-
-
C:\Users\Admin\AppData\Local\Temp\Trojan.MSIL.Formbook.AMAJ.exe"C:\Users\Admin\AppData\Local\Temp\Trojan.MSIL.Formbook.AMAJ.exe"2⤵PID:1436
-
-
C:\Users\Admin\AppData\Local\Temp\Trojan.MSIL.Formbook.AMAJ.exe"C:\Users\Admin\AppData\Local\Temp\Trojan.MSIL.Formbook.AMAJ.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:2348
-
Network
MITRE ATT&CK Enterprise v15
Execution
Command and Scripting Interpreter
1PowerShell
1Scheduled Task/Job
1Scheduled Task
1Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Scheduled Task
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Scheduled Task
1Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
4Credentials In Files
3Credentials in Registry
1Replay Monitor
Loading Replay Monitor...
Downloads
-
Filesize
2KB
MD5968cb9309758126772781b83adb8a28f
SHA18da30e71accf186b2ba11da1797cf67f8f78b47c
SHA25692099c10776bb7e3f2a8d1b82d4d40d0c4627e4f1bf754a6e58dfd2c2e97042a
SHA5124bd50732f8af4d688d95999bddfd296115d7033ddc38f86c9fb1f47fde202bffa27e9088bebcaa3064ca946af2f5c1ca6cbde49d0907f0005c7ab42874515dd3
-
Filesize
18KB
MD585b27af34149c96dad18aaea36d97726
SHA19590e8693148fd1b3dd2660c9e4a509258af9d05
SHA2561863e6c26acf71e748920c2067129ae6855591cc230814508584f6e0f011e6dc
SHA512b71b17216122f84aeb7eb6a18c0684c952277e63cc252a71c6cba5c64f9023adf671ef297198a01b4b5a91c5ac90cf7c6767ba8296eed5e51dcc748d9b89391f
-
Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
-
Filesize
1KB
MD5f35a526da80ab32b1a443d1fdf7e182f
SHA104399cd675d3385cbc2f8c2be007aba10262f8a3
SHA256ef67b3198499f92c4664ec420b3c07a5e69143df294effb04c7444ba2f032205
SHA5125eaa012c2d48c018a3b8fbf968025ab87ff7fc1de6476085f5124acf9c560ebcb519649f005ffddb98e73b6b4119c7684029fc76bef0dc4f775c612d3a858e3b