Analysis
- max time kernel
147s - max time network
119s - platform
windows10_x64 - resource
win10v20210410 - submitted
19/07/2021, 13:11
General
- Target REMITANCE 103_03435_210408_BSA.exe
- Size 686KB
- Sample210719-aparv2tl7e
- SHA256 7da903dc2abc47ad0b16a457e013a77e726fa5a984829ba9f226dc984e3a7361
Malware Config
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
mail.gilanis.co.ke
-
Port
587
-
Username
-
Password
Mullardodo@#
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- AgentTesla Payload 4 IoCs
- Drops file in Drivers directory 1 IoCs
- 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.
- 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 3 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 11 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\REMITANCE 103_03435_210408_BSA.exe"C:\Users\Admin\AppData\Local\Temp\REMITANCE 103_03435_210408_BSA.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\BwUBvSJtzvj" /XML "C:\Users\Admin\AppData\Local\Temp\tmpEB.tmp"2⤵
- Creates scheduled task(s)
-
-
C:\Users\Admin\AppData\Local\Temp\REMITANCE 103_03435_210408_BSA.exe"C:\Users\Admin\AppData\Local\Temp\REMITANCE 103_03435_210408_BSA.exe"2⤵
- Drops file in Drivers directory
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/3380-139-0x00000000054E0000-0x00000000059DE000-memory.dmp
memory/3380-136-0x0000000006240000-0x0000000006241000-memory.dmp
memory/3380-135-0x0000000005960000-0x0000000005961000-memory.dmp
memory/3380-134-0x00000000054E0000-0x00000000059DE000-memory.dmp
memory/3380-127-0x0000000000400000-0x000000000043C000-memory.dmp
memory/3904-119-0x00000000053C0000-0x00000000053C1000-memory.dmp
memory/3904-124-0x00000000071E0000-0x0000000007219000-memory.dmp
memory/3904-123-0x00000000079A0000-0x0000000007A1A000-memory.dmp
memory/3904-122-0x0000000005630000-0x000000000564B000-memory.dmp
memory/3904-121-0x00000000053C0000-0x00000000058BE000-memory.dmp
memory/3904-120-0x0000000005680000-0x0000000005681000-memory.dmp
memory/3904-114-0x0000000000A50000-0x0000000000A51000-memory.dmp
memory/3904-118-0x0000000005460000-0x0000000005461000-memory.dmp
memory/3904-117-0x00000000058C0000-0x00000000058C1000-memory.dmp
memory/3904-116-0x0000000005320000-0x0000000005321000-memory.dmp