Analysis
-
max time kernel
75s -
max time network
136s -
platform
windows10-2004_x64 -
resource
win10v2004-20230220-en -
resource tags
arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system -
submitted
15/04/2023, 08:47
Static task
static1
Behavioral task
behavioral1
Sample
tmp.exe
Resource
win7-20230220-en
Behavioral task
behavioral2
Sample
tmp.exe
Resource
win10v2004-20230220-en
General
-
Target
tmp.exe
-
Size
1.7MB
-
MD5
9315baa2d29e3202b3f14da5b927d329
-
SHA1
8caa2fe421dec35ebc1bc3f5da31f0dedb6a4ddf
-
SHA256
3c78f01d7f27410f7897b7367112b162816a19930d90ccba32f4043d40c4223f
-
SHA512
14c7fafb725151ed28d44bc7f571d1bff7d3b5fafcfe205996da408dccf72538f066e740f59651fb1b9ad8f999d09f9374f020745b599aacefbe54406c0e6740
-
SSDEEP
24576:2ZL20LiZ2VGym3Hxe/K/3xHOMHLP0JqwVniwhgDifkkFV0p79tDa:M20LikyPCII
Malware Config
Extracted
agenttesla
Protocol: smtp- Host:
smtp.yandex.com - Port:
587 - Username:
[email protected] - Password:
qbkcioyfoxstxqax - Email To:
[email protected]
Signatures
-
AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
-
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-1-5-21-2275444769-3691835758-4097679484-1000\Control Panel\International\Geo\Nation tmp.exe -
Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 aspnet_compiler.exe Key opened \REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 aspnet_compiler.exe Key opened \REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 aspnet_compiler.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Iaygb = "\"C:\\Users\\Admin\\AppData\\Roaming\\Twtrcwhcst\\Iaygb.exe\"" tmp.exe -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 4032 set thread context of 1012 4032 tmp.exe 97 -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
-
Gathers network information 2 TTPs 2 IoCs
Uses commandline utility to view network configuration.
pid Process 1384 ipconfig.exe 1120 ipconfig.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 4732 powershell.exe 4732 powershell.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
description pid Process Token: SeDebugPrivilege 4032 tmp.exe Token: SeDebugPrivilege 4732 powershell.exe Token: SeDebugPrivilege 1012 aspnet_compiler.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 1012 aspnet_compiler.exe -
Suspicious use of WriteProcessMemory 23 IoCs
description pid Process procid_target PID 4032 wrote to memory of 2528 4032 tmp.exe 83 PID 4032 wrote to memory of 2528 4032 tmp.exe 83 PID 4032 wrote to memory of 2528 4032 tmp.exe 83 PID 2528 wrote to memory of 1384 2528 cmd.exe 85 PID 2528 wrote to memory of 1384 2528 cmd.exe 85 PID 2528 wrote to memory of 1384 2528 cmd.exe 85 PID 4032 wrote to memory of 4732 4032 tmp.exe 86 PID 4032 wrote to memory of 4732 4032 tmp.exe 86 PID 4032 wrote to memory of 4732 4032 tmp.exe 86 PID 4032 wrote to memory of 3368 4032 tmp.exe 94 PID 4032 wrote to memory of 3368 4032 tmp.exe 94 PID 4032 wrote to memory of 3368 4032 tmp.exe 94 PID 3368 wrote to memory of 1120 3368 cmd.exe 96 PID 3368 wrote to memory of 1120 3368 cmd.exe 96 PID 3368 wrote to memory of 1120 3368 cmd.exe 96 PID 4032 wrote to memory of 1012 4032 tmp.exe 97 PID 4032 wrote to memory of 1012 4032 tmp.exe 97 PID 4032 wrote to memory of 1012 4032 tmp.exe 97 PID 4032 wrote to memory of 1012 4032 tmp.exe 97 PID 4032 wrote to memory of 1012 4032 tmp.exe 97 PID 4032 wrote to memory of 1012 4032 tmp.exe 97 PID 4032 wrote to memory of 1012 4032 tmp.exe 97 PID 4032 wrote to memory of 1012 4032 tmp.exe 97 -
outlook_office_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 aspnet_compiler.exe -
outlook_win_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 aspnet_compiler.exe
Processes
-
C:\Users\Admin\AppData\Local\Temp\tmp.exe"C:\Users\Admin\AppData\Local\Temp\tmp.exe"1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4032 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c ipconfig /release2⤵
- Suspicious use of WriteProcessMemory
PID:2528 -
C:\Windows\SysWOW64\ipconfig.exeipconfig /release3⤵
- Gathers network information
PID:1384
-
-
-
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ENC cwB0AGEAcgB0AC0AcwBsAGUAZQBwACAALQBzAGUAYwBvAG4AZABzACAAMgAwAA==2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4732
-
-
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c ipconfig /renew2⤵
- Suspicious use of WriteProcessMemory
PID:3368 -
C:\Windows\SysWOW64\ipconfig.exeipconfig /renew3⤵
- Gathers network information
PID:1120
-
-
-
C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exeC:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe2⤵
- Accesses Microsoft Outlook profiles
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- outlook_office_path
- outlook_win_path
PID:1012
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
-
Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82