Analysis
- max time kernel
148s - max time network
152s - platform
windows10-2004_x64 - resource
win10v2004-en-20220113 - submitted
07/04/2022, 04:19
General
- Target Transfer Slip.exe
- Size 524KB
- Sample220407-exhmdsgdgl
- SHA256 db79d2d8501b876d4d59f41e067ac54ebfaca9863c5aaab7686380284e7a4616
Malware Config
Extracted
-
Protocol
smtp
-
Host
us2.smtp.mailhostbox.com
-
Port
587
-
Username
-
Password
X##))))99V$$
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
us2.smtp.mailhostbox.com
-
Port
587
-
Username
-
Password
X##))))99V$$
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.
- 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
- Adds Run key to start application 2 TTPs 1 IoCs
- Suspicious use of SetThreadContext 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious behavior: EnumeratesProcesses 8 IoCs
- Suspicious behavior: RenamesItself 1 IoCs
- Suspicious use of AdjustPrivilegeToken 3 IoCs
- Suspicious use of WriteProcessMemory 17 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\Transfer Slip.exe"C:\Users\Admin\AppData\Local\Temp\Transfer Slip.exe"1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- 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\Roaming\sAhjZKkTx.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\sAhjZKkTx" /XML "C:\Users\Admin\AppData\Local\Temp\tmpF569.tmp"2⤵
- Creates scheduled task(s)
-
-
C:\Users\Admin\AppData\Local\Temp\Transfer Slip.exe"C:\Users\Admin\AppData\Local\Temp\Transfer Slip.exe"2⤵
-
-
C:\Users\Admin\AppData\Local\Temp\Transfer Slip.exe"C:\Users\Admin\AppData\Local\Temp\Transfer Slip.exe"2⤵
- Accesses Microsoft Outlook profiles
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: RenamesItself
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
Transfer Slip.exe.log
tmpF569.tmp
memory/1512-134-0x0000000008FD0000-0x000000000906C000-memory.dmp
memory/1512-135-0x00000000094C0000-0x0000000009526000-memory.dmp
memory/1512-130-0x0000000000A10000-0x0000000000A9A000-memory.dmp
memory/1512-131-0x0000000005A50000-0x0000000005FF4000-memory.dmp
memory/1512-132-0x00000000054A0000-0x0000000005532000-memory.dmp
memory/1512-133-0x0000000005430000-0x000000000543A000-memory.dmp
memory/3460-143-0x0000000000400000-0x000000000043A000-memory.dmp
memory/3460-156-0x0000000006720000-0x0000000006770000-memory.dmp
memory/4840-155-0x0000000007D50000-0x0000000007DE6000-memory.dmp
memory/4840-152-0x0000000008110000-0x000000000878A000-memory.dmp
memory/4840-138-0x0000000002EF0000-0x0000000002F26000-memory.dmp
memory/4840-147-0x00000000067D0000-0x00000000067EE000-memory.dmp
memory/4840-148-0x0000000002EE5000-0x0000000002EE7000-memory.dmp
memory/4840-149-0x0000000006D90000-0x0000000006DC2000-memory.dmp
memory/4840-150-0x0000000070300000-0x000000007034C000-memory.dmp
memory/4840-151-0x0000000006D70000-0x0000000006D8E000-memory.dmp
memory/4840-140-0x00000000058C0000-0x0000000005EE8000-memory.dmp
memory/4840-153-0x0000000007AD0000-0x0000000007AEA000-memory.dmp
memory/4840-154-0x0000000007B40000-0x0000000007B4A000-memory.dmp
memory/4840-145-0x0000000005F30000-0x0000000005F52000-memory.dmp
memory/4840-146-0x00000000060D0000-0x0000000006136000-memory.dmp
memory/4840-157-0x0000000007D00000-0x0000000007D0E000-memory.dmp
memory/4840-158-0x0000000007E10000-0x0000000007E2A000-memory.dmp
memory/4840-159-0x0000000007DF0000-0x0000000007DF8000-memory.dmp