Analysis
- max time kernel
62s - max time network
124s - platform
windows10-2004_x64 - resource
win10v2004-20220414-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 1 IoCs
- Executes dropped EXE 2 IoCs
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- 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 11 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\AccountStatement.pdf.exe"C:\Users\Admin\AppData\Local\Temp\AccountStatement.pdf.exe"1⤵
- Checks computer location settings
- 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
- 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.log
Gato.exe
Gato.exe
Gato.exe
memory/212-145-0x0000000005220000-0x0000000005232000-memory.dmp
memory/212-144-0x0000000005780000-0x0000000005D98000-memory.dmp
memory/212-151-0x0000000006D50000-0x0000000006DA0000-memory.dmp
memory/212-150-0x00000000074D0000-0x00000000079FC000-memory.dmp
memory/212-149-0x0000000006DD0000-0x0000000006F92000-memory.dmp
memory/212-148-0x00000000061F0000-0x0000000006256000-memory.dmp
memory/212-141-0x0000000000400000-0x0000000000420000-memory.dmp
memory/212-147-0x0000000005280000-0x00000000052BC000-memory.dmp
memory/212-146-0x0000000005350000-0x000000000545A000-memory.dmp
memory/3324-139-0x0000000006A10000-0x0000000006AAC000-memory.dmp
memory/3324-133-0x0000000000960000-0x000000000096A000-memory.dmp
memory/3324-134-0x0000000005980000-0x0000000005F24000-memory.dmp
memory/3324-135-0x00000000053D0000-0x0000000005462000-memory.dmp
memory/3324-138-0x0000000005530000-0x000000000554E000-memory.dmp
memory/3324-137-0x00000000055B0000-0x0000000005626000-memory.dmp
memory/3324-136-0x00000000054C0000-0x00000000054CA000-memory.dmp