Analysis
- max time kernel
139s - max time network
156s - platform
windows10-2004_x64 - resource
win10v2004-20230915-en - resource tags
- submitted
21/09/2023, 09:56
General
- Target 29227ecfabb9f27a144a638d37b5681b.exe
- Size 297KB
- Sample230921-lycabsfc4s
- SHA256 d239a96a2b15b78ab70b93fd103c76293eb4490593992d6b35c1ae7d7956ae15
Malware Config
Extracted
-
stealc
-
http://91.103.252.146
-
url_path
/1d9e38415ea54afa.php
Signatures
- Stealc
Stealc is an infostealer written in C++.
- Downloads MZ/PE file
- Loads dropped DLL 2 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.
- Program crash 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 2 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\29227ecfabb9f27a144a638d37b5681b.exe"C:\Users\Admin\AppData\Local\Temp\29227ecfabb9f27a144a638d37b5681b.exe"1⤵
- Loads dropped DLL
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 3232 -s 19442⤵
- Program crash
-
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 3232 -ip 32321⤵
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
mozglue.dll
mozglue.dll
nss3.dll
memory/3232-1-0x0000000000900000-0x0000000000A00000-memory.dmp
memory/3232-2-0x00000000008D0000-0x00000000008EB000-memory.dmp
memory/3232-3-0x0000000000400000-0x0000000000719000-memory.dmp
memory/3232-4-0x0000000061E00000-0x0000000061EF3000-memory.dmp
memory/3232-71-0x0000000000400000-0x0000000000719000-memory.dmp
memory/3232-72-0x0000000000900000-0x0000000000A00000-memory.dmp
memory/3232-73-0x00000000008D0000-0x00000000008EB000-memory.dmp
memory/3232-74-0x0000000000400000-0x0000000000719000-memory.dmp