Analysis
- max time kernel
64s - max time network
126s - platform
windows10-2004_x64 - resource
win10v2004-20220812-en - resource tags
- submitted
03/11/2022, 11:51
General
- Target file.exe
- Size 386KB
- Sample221103-n1akmacbcj
- SHA256 a3694a1695f21ff234a62d22c6d98dd4f5a7fd3e0edb25b0830d40612196e922
Malware Config
Extracted
-
privateloader
-
http://108.174.200.11/MWTSL
Signatures
- PrivateLoader
PrivateLoader is a downloader sold as a pay-per-install malware distribution service.
- Loads dropped DLL 10 IoCs
- 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.
- Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
- Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
- Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
- Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
- Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\file.exe"C:\Users\Admin\AppData\Local\Temp\file.exe"1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
freebl3.dll
freebl3.dll
freebl3.dll
freebl3.dll
freebl3.dll
freebl3.dll
mozglue.dll
nss3.dll
softokn3.dll
softokn3.dll
memory/1752-149-0x0000000073F80000-0x0000000073FA5000-memory.dmp
memory/1752-137-0x0000000000400000-0x0000000000445000-memory.dmp
memory/1752-142-0x0000000002250000-0x0000000002293000-memory.dmp
memory/1752-141-0x0000000003F00000-0x00000000046D8000-memory.dmp
memory/1752-146-0x00000000741E0000-0x0000000074204000-memory.dmp
memory/1752-147-0x0000000074250000-0x0000000074384000-memory.dmp
memory/1752-132-0x0000000000400000-0x0000000000445000-memory.dmp
memory/1752-140-0x0000000000400000-0x0000000000445000-memory.dmp
memory/1752-139-0x00000000768A0000-0x0000000076B21000-memory.dmp
memory/1752-151-0x0000000073F20000-0x0000000073F77000-memory.dmp
memory/1752-153-0x0000000073F80000-0x0000000073FA5000-memory.dmp
memory/1752-138-0x0000000000400000-0x0000000000445000-memory.dmp
memory/1752-155-0x0000000073F20000-0x0000000073F77000-memory.dmp
memory/1752-143-0x0000000000400000-0x0000000000445000-memory.dmp
memory/1752-157-0x0000000073F20000-0x0000000073F77000-memory.dmp
memory/1752-136-0x0000000002250000-0x0000000002293000-memory.dmp
memory/1752-135-0x0000000077800000-0x0000000077A15000-memory.dmp
memory/1752-159-0x0000000073F20000-0x0000000073F77000-memory.dmp
memory/1752-161-0x0000000073F20000-0x0000000073F77000-memory.dmp
memory/1752-134-0x0000000000400000-0x0000000000445000-memory.dmp
memory/1752-163-0x0000000073F20000-0x0000000073F77000-memory.dmp
memory/1752-133-0x0000000000400000-0x0000000000445000-memory.dmp
memory/1752-164-0x0000000000400000-0x0000000000445000-memory.dmp
memory/1752-165-0x0000000002250000-0x0000000002293000-memory.dmp
memory/1752-166-0x0000000003F00000-0x00000000046D8000-memory.dmp