Analysis
- max time kernel
128s - max time network
122s - platform
windows10_x64 - resource
win10-en-20211014 - submitted
18/10/2021, 03:29
General
- Target Purchase Order No. 63500321.exe
- Size 438KB
- Sample211018-d1w4hsdae5
- SHA256 fa6598232bda21145174fb4c433e24a4a16ba270edbd02505c896d2f3de5a0e8
Malware Config
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
mail.dairysystems.co.ke
-
Port
587
-
Username
-
Password
2019@systems
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- AgentTesla Payload 3 IoCs
- Looks for VirtualBox Guest Additions in registry 2 TTPs
- Looks for VMWare Tools registry key 2 TTPs
- Checks BIOS information in registry 2 TTPs 2 IoCs
BIOS information is often read in order to detect sandboxing environments.
- 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
- Maps connected drives based on registry 3 TTPs 2 IoCs
Disk information is often read in order to detect sandboxing environments.
- Suspicious use of SetThreadContext 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Suspicious behavior: EnumeratesProcesses 5 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 11 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\Purchase Order No. 63500321.exe"C:\Users\Admin\AppData\Local\Temp\Purchase Order No. 63500321.exe"1⤵
- Checks BIOS information in registry
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
-
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\Purchase Order No. 63500321.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
-
C:\Users\Admin\AppData\Local\Temp\Purchase Order No. 63500321.exe"C:\Users\Admin\AppData\Local\Temp\Purchase Order No. 63500321.exe"2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
memory/1256-131-0x0000000000400000-0x000000000043C000-memory.dmp
memory/1256-142-0x00000000056E0000-0x0000000005BDE000-memory.dmp
memory/1672-117-0x0000000005CE0000-0x0000000005CE1000-memory.dmp
memory/1672-118-0x0000000005880000-0x0000000005881000-memory.dmp
memory/1672-119-0x00000000057E0000-0x0000000005CDE000-memory.dmp
memory/1672-120-0x0000000005810000-0x0000000005811000-memory.dmp
memory/1672-121-0x0000000007CE0000-0x0000000007CE1000-memory.dmp
memory/1672-122-0x0000000005CC0000-0x0000000005CC8000-memory.dmp
memory/1672-123-0x00000000080E0000-0x0000000008138000-memory.dmp
memory/1672-115-0x0000000000F50000-0x0000000000F51000-memory.dmp
memory/1672-125-0x00000000082D0000-0x00000000082D1000-memory.dmp
memory/2260-127-0x00000000049C0000-0x00000000049C1000-memory.dmp
memory/2260-130-0x0000000007730000-0x0000000007731000-memory.dmp
memory/2260-128-0x0000000004AE0000-0x0000000004AE1000-memory.dmp
memory/2260-126-0x00000000049C0000-0x00000000049C1000-memory.dmp
memory/2260-137-0x0000000007650000-0x0000000007651000-memory.dmp
memory/2260-138-0x00000000075A0000-0x00000000075A1000-memory.dmp
memory/2260-140-0x0000000007ED0000-0x0000000007ED1000-memory.dmp
memory/2260-141-0x00000000070F2000-0x00000000070F3000-memory.dmp
memory/2260-129-0x00000000070F0000-0x00000000070F1000-memory.dmp
memory/2260-143-0x00000000076F0000-0x00000000076F1000-memory.dmp
memory/2260-144-0x0000000008790000-0x0000000008791000-memory.dmp
memory/2260-145-0x0000000008600000-0x0000000008601000-memory.dmp
memory/2260-146-0x00000000049C0000-0x00000000049C1000-memory.dmp
memory/2260-153-0x00000000095A0000-0x00000000095D3000-memory.dmp
memory/2260-160-0x0000000009580000-0x0000000009581000-memory.dmp
memory/2260-165-0x00000000096F0000-0x00000000096F1000-memory.dmp
memory/2260-166-0x000000007EFE0000-0x000000007EFE1000-memory.dmp
memory/2260-167-0x0000000009910000-0x0000000009911000-memory.dmp
memory/2260-236-0x00000000070F3000-0x00000000070F4000-memory.dmp