Analysis
- max time kernel
147s - max time network
167s - platform
windows10-2004_x64 - resource
win10v2004-20240226-en - resource tags
- submitted
12/03/2024, 23:11
General
- Target $TEMP/syncUpd.exe
- Size 200KB
- Sample240312-26f69afe68
- SHA256 13cd1152a19fdac6581cac2bd822f34bd3026ea1783ff231e299b6d28c046a6a
Malware Config
Extracted
-
stealc
-
http://185.172.128.145
-
url_path
/3cd2b41cbde8fc9c.php
Signatures
- Stealc
Stealc is an infostealer written in C++.
- Downloads MZ/PE file
- Loads dropped DLL 2 IoCs
- Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
- 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.
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
- Suspicious behavior: EnumeratesProcesses 14 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\$TEMP\syncUpd.exe"C:\Users\Admin\AppData\Local\Temp\$TEMP\syncUpd.exe"1⤵
- Loads dropped DLL
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
-
C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=3716 --field-trial-handle=2252,i,16504368816373493055,9578615028378602855,262144 --variations-seed-version /prefetch:81⤵
-
C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --no-appcompat-clear --mojo-platform-channel-handle=3316 --field-trial-handle=2252,i,16504368816373493055,9578615028378602855,262144 --variations-seed-version /prefetch:31⤵
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
mozglue.dll
mozglue.dll
nss3.dll
SCT Auditing Pending Reports
Sdch Dictionaries
memory/4768-11-0x0000000061E00000-0x0000000061EF3000-memory.dmp
memory/4768-5-0x0000000000400000-0x000000000063B000-memory.dmp
memory/4768-8-0x0000000000400000-0x000000000063B000-memory.dmp
memory/4768-9-0x0000000000400000-0x000000000063B000-memory.dmp
memory/4768-10-0x0000000000400000-0x000000000063B000-memory.dmp
memory/4768-1-0x00000000006C0000-0x00000000007C0000-memory.dmp
memory/4768-40-0x0000000000400000-0x000000000063B000-memory.dmp
memory/4768-6-0x00000000006C0000-0x00000000007C0000-memory.dmp
memory/4768-57-0x0000000000400000-0x000000000063B000-memory.dmp
memory/4768-7-0x00000000008A0000-0x00000000008C7000-memory.dmp
memory/4768-69-0x0000000000400000-0x000000000063B000-memory.dmp
memory/4768-79-0x0000000000400000-0x000000000063B000-memory.dmp
memory/4768-4-0x0000000000400000-0x000000000063B000-memory.dmp
memory/4768-3-0x0000000000400000-0x000000000063B000-memory.dmp
memory/4768-2-0x00000000008A0000-0x00000000008C7000-memory.dmp
memory/4768-97-0x0000000000400000-0x000000000063B000-memory.dmp
memory/4768-108-0x0000000000400000-0x000000000063B000-memory.dmp