Analysis
-
max time kernel
121s -
max time network
121s -
platform
windows7_x64 -
resource
win7-en-20211014 -
submitted
22-10-2021 05:44
Static task
static1
Behavioral task
behavioral1
Sample
Purchase Order.exe
Resource
win7-en-20211014
Behavioral task
behavioral2
Sample
Purchase Order.exe
Resource
win10-en-20210920
General
-
Target
Purchase Order.exe
-
Size
338KB
-
MD5
392f0e8e6ed60e4e1c35bf1f6be5ec57
-
SHA1
72aff1f262792ec3e626888583c55549d395dcb7
-
SHA256
49b6ab1d5d071bdca6b3cfec673a258110848bc5beea2805d6b7e016731a4655
-
SHA512
a67341f726f1e0df2e1733cf3d4dbcbb6d950922b35df5c2ba1feec343dc668a28b3f9ee0a8eb9089fa3e04811acb868dc34021d38f2b9d1fb2a987d08410532
Malware Config
Extracted
agenttesla
https://api.telegram.org/bot1803146213:AAHYyCRx7FggQ9LfPbrIs79ZUWCEc9wNnDo/sendDocument
Signatures
-
AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
-
AgentTesla Payload 4 IoCs
Processes:
resource yara_rule behavioral1/memory/1160-57-0x0000000000400000-0x000000000044C000-memory.dmp family_agenttesla behavioral1/memory/1160-58-0x000000000040188B-mapping.dmp family_agenttesla behavioral1/memory/1160-60-0x0000000000400000-0x000000000044C000-memory.dmp family_agenttesla behavioral1/memory/1160-61-0x0000000001EB0000-0x0000000001EE7000-memory.dmp family_agenttesla -
Loads dropped DLL 1 IoCs
Processes:
Purchase Order.exepid process 1324 Purchase Order.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.
-
Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
Processes:
Purchase Order.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 Purchase Order.exe Key opened \REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 Purchase Order.exe Key opened \REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 Purchase Order.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
Purchase Order.exedescription pid process target process PID 1324 set thread context of 1160 1324 Purchase Order.exe Purchase Order.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
-
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
Purchase Order.exepid process 1160 Purchase Order.exe 1160 Purchase Order.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
Purchase Order.exedescription pid process Token: SeDebugPrivilege 1160 Purchase Order.exe -
Suspicious use of WriteProcessMemory 11 IoCs
Processes:
Purchase Order.exedescription pid process target process PID 1324 wrote to memory of 1160 1324 Purchase Order.exe Purchase Order.exe PID 1324 wrote to memory of 1160 1324 Purchase Order.exe Purchase Order.exe PID 1324 wrote to memory of 1160 1324 Purchase Order.exe Purchase Order.exe PID 1324 wrote to memory of 1160 1324 Purchase Order.exe Purchase Order.exe PID 1324 wrote to memory of 1160 1324 Purchase Order.exe Purchase Order.exe PID 1324 wrote to memory of 1160 1324 Purchase Order.exe Purchase Order.exe PID 1324 wrote to memory of 1160 1324 Purchase Order.exe Purchase Order.exe PID 1324 wrote to memory of 1160 1324 Purchase Order.exe Purchase Order.exe PID 1324 wrote to memory of 1160 1324 Purchase Order.exe Purchase Order.exe PID 1324 wrote to memory of 1160 1324 Purchase Order.exe Purchase Order.exe PID 1324 wrote to memory of 1160 1324 Purchase Order.exe Purchase Order.exe -
outlook_office_path 1 IoCs
Processes:
Purchase Order.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 Purchase Order.exe -
outlook_win_path 1 IoCs
Processes:
Purchase Order.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 Purchase Order.exe
Processes
-
C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe"C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe"1⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe"C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe"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
Loading Replay Monitor...
Downloads
-
\Users\Admin\AppData\Local\Temp\nsiE985.tmp\aiuxmmjtmkz.dllMD5
586dd640c4a64cdf876ac0bfe48ad870
SHA18f9704a440ee2fb56b0bfd2a2f9a5b2a3fa685f0
SHA256206c1772141cc0ae68d1a3a317c1b4e5b2ece540322c211b6a37d65f100114cd
SHA512984100b0309b9d2f3cdf783697a497cea4675aee9b2c4529ef20afd6bdf011f1240044bfda2af2f9bb98b98c45b03c6d72e98dda2da8a958d36f3229c9a0dc62
-
memory/1160-57-0x0000000000400000-0x000000000044C000-memory.dmpFilesize
304KB
-
memory/1160-58-0x000000000040188B-mapping.dmp
-
memory/1160-60-0x0000000000400000-0x000000000044C000-memory.dmpFilesize
304KB
-
memory/1160-61-0x0000000001EB0000-0x0000000001EE7000-memory.dmpFilesize
220KB
-
memory/1160-64-0x0000000004562000-0x0000000004563000-memory.dmpFilesize
4KB
-
memory/1160-63-0x0000000004561000-0x0000000004562000-memory.dmpFilesize
4KB
-
memory/1160-66-0x0000000004564000-0x0000000004565000-memory.dmpFilesize
4KB
-
memory/1160-65-0x0000000004563000-0x0000000004564000-memory.dmpFilesize
4KB
-
memory/1324-55-0x0000000076241000-0x0000000076243000-memory.dmpFilesize
8KB