Analysis
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max time kernel
148s -
max time network
160s -
platform
windows10-2004_x64 -
resource
win10v2004-20220414-en -
submitted
21-05-2022 00:57
Static task
static1
Behavioral task
behavioral1
Sample
INVOICE_2203320045_xlxs.exe
Resource
win7-20220414-en
Behavioral task
behavioral2
Sample
INVOICE_2203320045_xlxs.exe
Resource
win10v2004-20220414-en
General
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Target
INVOICE_2203320045_xlxs.exe
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Size
526KB
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MD5
dd108215d60d63656303ca265f03fade
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SHA1
4eb98302f26496e020dc62d927555d9ae880fb10
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SHA256
af27bd7180ad756460e32f2ae56db7cbdc8a79e73a36b261a96f803e5b051fd5
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SHA512
dfb474ed650e7f56261047a45a938ffcf6653d57f5cc3bb95ae4651af04f31b8056657d1ccf8229caf3af91d387fdc8a411d43833194d7ede6f9a897982e92f2
Malware Config
Extracted
Protocol: smtp- Host:
smtp.yandex.com - Port:
587 - Username:
[email protected] - Password:
blessing2020
Extracted
agenttesla
Protocol: smtp- Host:
smtp.yandex.com - Port:
587 - Username:
[email protected] - Password:
blessing2020
Signatures
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AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
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AgentTesla Payload 1 IoCs
Processes:
resource yara_rule behavioral2/memory/4332-134-0x0000000000400000-0x0000000000466000-memory.dmp family_agenttesla -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
INVOICE_2203320045_xlxs.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Control Panel\International\Geo\Nation INVOICE_2203320045_xlxs.exe -
Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
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Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
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Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
Processes:
INVOICE_2203320045_xlxs.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 INVOICE_2203320045_xlxs.exe Key opened \REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 INVOICE_2203320045_xlxs.exe Key opened \REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 INVOICE_2203320045_xlxs.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
INVOICE_2203320045_xlxs.exedescription pid process target process PID 3152 set thread context of 4332 3152 INVOICE_2203320045_xlxs.exe INVOICE_2203320045_xlxs.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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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:
INVOICE_2203320045_xlxs.exeINVOICE_2203320045_xlxs.exepid process 3152 INVOICE_2203320045_xlxs.exe 3152 INVOICE_2203320045_xlxs.exe 3152 INVOICE_2203320045_xlxs.exe 3152 INVOICE_2203320045_xlxs.exe 4332 INVOICE_2203320045_xlxs.exe 4332 INVOICE_2203320045_xlxs.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
INVOICE_2203320045_xlxs.exeINVOICE_2203320045_xlxs.exedescription pid process Token: SeDebugPrivilege 3152 INVOICE_2203320045_xlxs.exe Token: SeDebugPrivilege 4332 INVOICE_2203320045_xlxs.exe -
Suspicious use of WriteProcessMemory 11 IoCs
Processes:
INVOICE_2203320045_xlxs.exedescription pid process target process PID 3152 wrote to memory of 4288 3152 INVOICE_2203320045_xlxs.exe schtasks.exe PID 3152 wrote to memory of 4288 3152 INVOICE_2203320045_xlxs.exe schtasks.exe PID 3152 wrote to memory of 4288 3152 INVOICE_2203320045_xlxs.exe schtasks.exe PID 3152 wrote to memory of 4332 3152 INVOICE_2203320045_xlxs.exe INVOICE_2203320045_xlxs.exe PID 3152 wrote to memory of 4332 3152 INVOICE_2203320045_xlxs.exe INVOICE_2203320045_xlxs.exe PID 3152 wrote to memory of 4332 3152 INVOICE_2203320045_xlxs.exe INVOICE_2203320045_xlxs.exe PID 3152 wrote to memory of 4332 3152 INVOICE_2203320045_xlxs.exe INVOICE_2203320045_xlxs.exe PID 3152 wrote to memory of 4332 3152 INVOICE_2203320045_xlxs.exe INVOICE_2203320045_xlxs.exe PID 3152 wrote to memory of 4332 3152 INVOICE_2203320045_xlxs.exe INVOICE_2203320045_xlxs.exe PID 3152 wrote to memory of 4332 3152 INVOICE_2203320045_xlxs.exe INVOICE_2203320045_xlxs.exe PID 3152 wrote to memory of 4332 3152 INVOICE_2203320045_xlxs.exe INVOICE_2203320045_xlxs.exe -
outlook_office_path 1 IoCs
Processes:
INVOICE_2203320045_xlxs.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 INVOICE_2203320045_xlxs.exe -
outlook_win_path 1 IoCs
Processes:
INVOICE_2203320045_xlxs.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 INVOICE_2203320045_xlxs.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\INVOICE_2203320045_xlxs.exe"C:\Users\Admin\AppData\Local\Temp\INVOICE_2203320045_xlxs.exe"1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\KtYjgOHP" /XML "C:\Users\Admin\AppData\Local\Temp\tmp879F.tmp"2⤵
- Creates scheduled task(s)
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C:\Users\Admin\AppData\Local\Temp\INVOICE_2203320045_xlxs.exe"{path}"2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Local\Microsoft\CLR_v2.0_32\UsageLogs\INVOICE_2203320045_xlxs.exe.logFilesize
496B
MD5cb76b18ebed3a9f05a14aed43d35fba6
SHA1836a4b4e351846fca08b84149cb734cb59b8c0d6
SHA2568d0edecf54cbbdf7981c8e41a3ed8621503188a87415f9af0fb8d890b138c349
SHA5127631141e4a6dda29452ada666326837372cd3d045f773006f63d9eff15d9432ed00029d9108a72c1a3b858377600a2aab2c9ec03764285c8801b6019babcf21c
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C:\Users\Admin\AppData\Local\Temp\tmp879F.tmpFilesize
1KB
MD5b057532ccdee2bf1e80d86aee1d28228
SHA1cb2196868b44f9c9528cd616e7d5452932a67e50
SHA256bff010d334769d9ae65ffab48620498e63a4baed76518f870167cfddc3819852
SHA51216b02a85e5488c6814da92fc7f7854e0416889520752fb19ba42622847866118d817f762f7c75d7a9b4e6ddb876b8472a4283a6d53651d8479645b8d4da5e981
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memory/3152-130-0x00000000747F0000-0x0000000074DA1000-memory.dmpFilesize
5.7MB
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memory/4288-131-0x0000000000000000-mapping.dmp
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memory/4332-133-0x0000000000000000-mapping.dmp
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memory/4332-134-0x0000000000400000-0x0000000000466000-memory.dmpFilesize
408KB
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memory/4332-136-0x00000000747F0000-0x0000000074DA1000-memory.dmpFilesize
5.7MB