Analysis
- max time kernel
195s - max time network
298s - platform
windows10-1703_x64 - resource
win10-20240404-en - resource tags
- submitted
27/04/2024, 22:30
General
- Target immortal.bin.exe
- Size 1.1MB
- Sample240427-2faxjsac8z
- SHA256 ce8f179e7e29d4f28f1c5039808e82c198264183166069d8ad567f63275c74a8
Malware Config
Extracted
-
umbral
-
https://discord.com/api/webhooks/1230863499496783923/A02kDLEw6wbN8ixBXQtfYqly_yrSOMARWe64V1_a5LlUVAnlyyQj7Axye820VBzQV8HJ
Signatures
- Detect Umbral payload 2 IoCs
- Umbral
Umbral stealer is an opensource moduler stealer written in C#.
- Downloads MZ/PE file
- Executes dropped EXE 1 IoCs
- Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs
- Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Suspicious use of AdjustPrivilegeToken 44 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 4 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\immortal.bin.exe"C:\Users\Admin\AppData\Local\Temp\immortal.bin.exe"1⤵
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\dykelpby.cpq.exe"C:\Users\Admin\AppData\Local\Temp\dykelpby.cpq.exe"2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\System32\Wbem\wmic.exe"wmic.exe" csproduct get uuid3⤵
- Suspicious use of AdjustPrivilegeToken
-
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
dykelpby.cpq.exe
memory/3452-11-0x0000016D96F80000-0x0000016D96FC0000-memory.dmp
memory/3452-15-0x0000016DB1620000-0x0000016DB1630000-memory.dmp
memory/3452-14-0x00007FFD6FBC0000-0x00007FFD705AC000-memory.dmp
memory/3452-17-0x00007FFD6FBC0000-0x00007FFD705AC000-memory.dmp
memory/4296-0-0x00000000000B0000-0x000000000041E000-memory.dmp
memory/4296-1-0x00000000000B0000-0x000000000041E000-memory.dmp
memory/4296-2-0x0000000073450000-0x0000000073B3E000-memory.dmp
memory/4296-3-0x00000000055A0000-0x00000000055B0000-memory.dmp
memory/4296-12-0x00000000000B0000-0x000000000041E000-memory.dmp
memory/4296-13-0x0000000073450000-0x0000000073B3E000-memory.dmp