Analysis
- max time kernel
60s - max time network
64s - platform
windows7_x64 - resource
win7-20220414-en - submitted
09/05/2022, 21:30
General
- Target AccountStatement.pdf.exe
- Size 699KB
- Sample220509-1cf4qaech6
- SHA256 731adf2e11160b6cf67dc393dfd47d89f9e80b74e8754050a53b6ca51323517d
Malware Config
Extracted
-
redline
-
asheesh.duckdns.org:5519
-
auth_value
a8111b2546ad321f98d40c4e25a0cc3b
Signatures
- RedLine
RedLine Stealer is a malware family written in C#, first appearing in early 2020.
- RedLine Payload 6 IoCs
- Executes dropped EXE 2 IoCs
- Loads dropped DLL 5 IoCs
- Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
- Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
- 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 27 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 13 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\AccountStatement.pdf.exe"C:\Users\Admin\AppData\Local\Temp\AccountStatement.pdf.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\RarSFX0\Gato.exe"C:\Users\Admin\AppData\Local\Temp\RarSFX0\Gato.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\RarSFX0\Gato.exe"C:\Users\Admin\AppData\Local\Temp\RarSFX0\Gato.exe"3⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
Gato.exe
Gato.exe
Gato.exe
Gato.exe
Gato.exe
Gato.exe
Gato.exe
Gato.exe
memory/1348-76-0x0000000000400000-0x0000000000420000-memory.dmp
memory/1348-71-0x0000000000400000-0x0000000000420000-memory.dmp
memory/1348-78-0x0000000000400000-0x0000000000420000-memory.dmp
memory/1348-67-0x0000000000400000-0x0000000000420000-memory.dmp
memory/1348-68-0x0000000000400000-0x0000000000420000-memory.dmp
memory/1348-70-0x0000000000400000-0x0000000000420000-memory.dmp
memory/1348-72-0x0000000000400000-0x0000000000420000-memory.dmp
memory/1944-65-0x00000000004A0000-0x00000000004A8000-memory.dmp
memory/1944-64-0x00000000006E0000-0x000000000070C000-memory.dmp
memory/1944-62-0x0000000000150000-0x000000000015A000-memory.dmp
memory/2036-54-0x0000000075C01000-0x0000000075C03000-memory.dmp