Analysis
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max time kernel
149s -
max time network
151s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system -
submitted
03-06-2024 09:50
Static task
static1
Behavioral task
behavioral1
Sample
document.exe
Resource
win7-20240221-en
General
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Target
document.exe
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Size
679KB
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MD5
bb277f03c2e761e03643369ef4d9f1da
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SHA1
8f44aa9566f9da9c7086d6da8f080c7a7de52050
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SHA256
8054c765c0425811e3632409c6bbd9149fde1de08593796957ca55ead7e9e683
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SHA512
e5d754214062f9f7767116d9aaa23abf70094a113cd682d257c145ca7e0825d344259149087df4dfee14ead93e61b476c2135522a859d8720d625a5693846cf0
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SSDEEP
12288:m67FxhThagHCN1x2W6BU8KbYJ6BrBpz86Q5NxdDHEYMxVhmaAkgBzJzmh:pDhThagq1/60bYG1pz8LN+hmacBNzmh
Malware Config
Extracted
agenttesla
Protocol: smtp- Host:
phoenixblowers.com - Port:
587 - Username:
[email protected] - Password:
Officeback@2022# - Email To:
[email protected]
Signatures
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AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
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Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
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Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
document.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-2539840389-1261165778-1087677076-1000\Control Panel\International\Geo\Nation document.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.
Processes:
flow ioc 21 api.ipify.org 22 api.ipify.org -
Suspicious use of SetThreadContext 1 IoCs
Processes:
document.exedescription pid process target process PID 656 set thread context of 4068 656 document.exe RegSvcs.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
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Suspicious behavior: EnumeratesProcesses 6 IoCs
Processes:
document.exepowershell.exeRegSvcs.exepid process 656 document.exe 1440 powershell.exe 656 document.exe 1440 powershell.exe 4068 RegSvcs.exe 4068 RegSvcs.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
Processes:
document.exepowershell.exeRegSvcs.exedescription pid process Token: SeDebugPrivilege 656 document.exe Token: SeDebugPrivilege 1440 powershell.exe Token: SeDebugPrivilege 4068 RegSvcs.exe -
Suspicious use of WriteProcessMemory 14 IoCs
Processes:
document.exedescription pid process target process PID 656 wrote to memory of 1440 656 document.exe powershell.exe PID 656 wrote to memory of 1440 656 document.exe powershell.exe PID 656 wrote to memory of 1440 656 document.exe powershell.exe PID 656 wrote to memory of 4980 656 document.exe schtasks.exe PID 656 wrote to memory of 4980 656 document.exe schtasks.exe PID 656 wrote to memory of 4980 656 document.exe schtasks.exe PID 656 wrote to memory of 4068 656 document.exe RegSvcs.exe PID 656 wrote to memory of 4068 656 document.exe RegSvcs.exe PID 656 wrote to memory of 4068 656 document.exe RegSvcs.exe PID 656 wrote to memory of 4068 656 document.exe RegSvcs.exe PID 656 wrote to memory of 4068 656 document.exe RegSvcs.exe PID 656 wrote to memory of 4068 656 document.exe RegSvcs.exe PID 656 wrote to memory of 4068 656 document.exe RegSvcs.exe PID 656 wrote to memory of 4068 656 document.exe RegSvcs.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\document.exe"C:\Users\Admin\AppData\Local\Temp\document.exe"1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:656 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\ZAZphYTyWlIUJ.exe"2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1440 -
C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\ZAZphYTyWlIUJ" /XML "C:\Users\Admin\AppData\Local\Temp\tmp9CEC.tmp"2⤵
- Creates scheduled task(s)
PID:4980 -
C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4068
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
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Filesize
1KB
MD5d5041d58a7edd8e77ce9f5d5f3a0c007
SHA18b2203bfca47d7a7dc950c79d7cef63f5a5d9f1c
SHA25681dd94364f8bad8061302402e972787321a984a7a709180fbbefade22942fe59
SHA51244552421e013982073542725618d3cc1eeb8415e68e31b90801d517b61b8cdda8a1553904936db9453c0c82d125ebab87a49d75b601f93613d9e3a88cec4e9cc