Analysis
- max time kernel
134s - max time network
79s - platform
windows10_x64 - resource
win10v20210408 - submitted
05/10/2021, 09:03
General
- Target New Inquiry PR #270473. 05.10.2021.xlxs.exe
- Size 509KB
- Sample211005-kz2e6shee4
- SHA256 8664bd0c09f992c53b0db3db2b6d5b5a14802fc7dd98d2e820d2df78fd26764e
Malware Config
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
smtp.yandex.com
-
Port
587
-
Username
-
Password
mosqueboy100
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.
- 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 7 IoCs
- Suspicious use of AdjustPrivilegeToken 3 IoCs
- Suspicious use of WriteProcessMemory 11 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\New Inquiry PR #270473. 05.10.2021.xlxs.exe"C:\Users\Admin\AppData\Local\Temp\New Inquiry PR #270473. 05.10.2021.xlxs.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
-
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\New Inquiry PR #270473. 05.10.2021.xlxs.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
-
C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
memory/992-121-0x0000000004BC0000-0x0000000004BCA000-memory.dmp
memory/992-116-0x0000000004F20000-0x0000000004F21000-memory.dmp
memory/992-117-0x0000000004A20000-0x0000000004A21000-memory.dmp
memory/992-118-0x0000000004A20000-0x0000000004F1E000-memory.dmp
memory/992-119-0x0000000004A00000-0x0000000004A01000-memory.dmp
memory/992-120-0x0000000007A90000-0x0000000007A91000-memory.dmp
memory/992-122-0x0000000007DC0000-0x0000000007E1A000-memory.dmp
memory/992-124-0x0000000008170000-0x0000000008171000-memory.dmp
memory/992-114-0x0000000000090000-0x0000000000091000-memory.dmp
memory/3172-131-0x0000000000400000-0x000000000043C000-memory.dmp
memory/3172-274-0x00000000055C0000-0x00000000055C1000-memory.dmp
memory/3172-141-0x0000000005470000-0x000000000596E000-memory.dmp
memory/3924-137-0x0000000006EB0000-0x0000000006EB1000-memory.dmp
memory/3924-144-0x0000000007F20000-0x0000000007F21000-memory.dmp
memory/3924-130-0x0000000004862000-0x0000000004863000-memory.dmp
memory/3924-128-0x00000000071F0000-0x00000000071F1000-memory.dmp
memory/3924-138-0x0000000006F50000-0x0000000006F51000-memory.dmp
memory/3924-140-0x0000000007920000-0x0000000007921000-memory.dmp
memory/3924-127-0x0000000004420000-0x0000000004421000-memory.dmp
memory/3924-142-0x00000000071D0000-0x00000000071D1000-memory.dmp
memory/3924-143-0x0000000007FD0000-0x0000000007FD1000-memory.dmp
memory/3924-129-0x0000000004860000-0x0000000004861000-memory.dmp
memory/3924-152-0x0000000008D00000-0x0000000008D33000-memory.dmp
memory/3924-159-0x0000000008CE0000-0x0000000008CE1000-memory.dmp
memory/3924-164-0x0000000008EE0000-0x0000000008EE1000-memory.dmp
memory/3924-165-0x000000007F0B0000-0x000000007F0B1000-memory.dmp
memory/3924-166-0x0000000009270000-0x0000000009271000-memory.dmp
memory/3924-235-0x0000000004863000-0x0000000004864000-memory.dmp
memory/3924-362-0x00000000047B0000-0x00000000047B1000-memory.dmp
memory/3924-368-0x00000000047A0000-0x00000000047A1000-memory.dmp