Analysis
- max time kernel
69s - max time network
117s - platform
windows10_x64 - resource
win10v20201028 - submitted
09/11/2020, 19:42
General
- Target EmiratesNBD_swift_mt103.com.exe
- Size 506KB
- Sample201109-ezesep4gen
- SHA256 2acce03be9204acbcc6fc59fa5bebc3720d91a9d7daa122c0ea086c4727fafce
Malware Config
Extracted
-
Protocol
smtp
-
Host
mail.khokhwmeshmesh.com
-
Port
587
-
Username
-
Password
hr@kmc1800066
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
mail.khokhwmeshmesh.com
-
Port
587
-
Username
-
Password
hr@kmc1800066
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- CoreEntity .NET Packer 1 IoCs
A .NET packer called CoreEntity where it has embedded the payload as a BitMap object which is later decrypted.
- AgentTesla Payload 2 IoCs
- Looks for VirtualBox Guest Additions in registry 2 TTPs
- rezer0 1 IoCs
Detects ReZer0, a packer with multiple versions used in various campaigns.
- 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.
- 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.
- 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 14 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\EmiratesNBD_swift_mt103.com.exe"C:\Users\Admin\AppData\Local\Temp\EmiratesNBD_swift_mt103.com.exe"1⤵
- Checks BIOS information in registry
- Maps connected drives based on registry
- 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\wOjQxbwnWIlOrG" /XML "C:\Users\Admin\AppData\Local\Temp\tmp59ED.tmp"2⤵
- Creates scheduled task(s)
-
-
C:\Users\Admin\AppData\Local\Temp\EmiratesNBD_swift_mt103.com.exe"{path}"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\netsh.exe"netsh" wlan show profile3⤵
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-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
memory/4512-20-0x00000000056E0000-0x00000000056E1000-memory.dmp
memory/4512-15-0x0000000073370000-0x0000000073A5E000-memory.dmp
memory/4512-12-0x0000000000400000-0x0000000000452000-memory.dmp
memory/4772-5-0x00000000048F0000-0x00000000048F1000-memory.dmp
memory/4772-9-0x00000000065F0000-0x00000000065F1000-memory.dmp
memory/4772-8-0x0000000007DC0000-0x0000000007DC1000-memory.dmp
memory/4772-7-0x0000000006590000-0x00000000065E3000-memory.dmp
memory/4772-6-0x0000000004B60000-0x0000000004B63000-memory.dmp
memory/4772-0-0x0000000073370000-0x0000000073A5E000-memory.dmp
memory/4772-4-0x0000000004920000-0x0000000004921000-memory.dmp
memory/4772-3-0x0000000004E20000-0x0000000004E21000-memory.dmp
memory/4772-1-0x0000000000040000-0x0000000000041000-memory.dmp