Analysis
- max time kernel
147s - max time network
151s - platform
windows11-21h2_x64 - resource
win11-20240426-en - resource tags
- submitted
16/05/2024, 09:48
General
- Target d75bdcccc94c84851d39dc9c9b96b717cd621c8a4ce56b1c81a40c721f985b6b.exe
- Size 367KB
- Sample240516-ls8fksfc34
- SHA256 d75bdcccc94c84851d39dc9c9b96b717cd621c8a4ce56b1c81a40c721f985b6b
Malware Config
Extracted
-
stealc
-
default100
-
http://185.172.128.150
-
url_path
/c698e1bc8a2f5e6d.php
Signatures
- Stealc
Stealc is an infostealer written in C++.
- Downloads MZ/PE file
- Executes dropped EXE 2 IoCs
- 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).
- Program crash 1 IoCs
- Checks SCSI registry key(s) 3 TTPs 3 IoCs
SCSI information is often read in order to detect sandboxing environments.
- Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
- Suspicious behavior: EnumeratesProcesses 23 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of FindShellTrayWindow 7 IoCs
- Suspicious use of SendNotifyMessage 7 IoCs
- Suspicious use of WriteProcessMemory 8 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\d75bdcccc94c84851d39dc9c9b96b717cd621c8a4ce56b1c81a40c721f985b6b.exe"C:\Users\Admin\AppData\Local\Temp\d75bdcccc94c84851d39dc9c9b96b717cd621c8a4ce56b1c81a40c721f985b6b.exe"1⤵
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\u2wg.0.exe"C:\Users\Admin\AppData\Local\Temp\u2wg.0.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
-
-
C:\Users\Admin\AppData\Local\Temp\u2wg.1.exe"C:\Users\Admin\AppData\Local\Temp\u2wg.1.exe"2⤵
- Executes dropped EXE
- Checks SCSI registry key(s)
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\iolo\dm\SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe"C:\Users\Admin\AppData\Local\Temp\iolo\dm\SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe" /eieci=11A12794-499E-4FA0-A281-A9A9AA8B2685 /eipi=5488CB36-BE62-4606-B07B-2EE938868BD13⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
-
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 3760 -s 9602⤵
- Program crash
-
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 3760 -ip 37601⤵
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
Are.docx
mozglue.dll
nss3.dll
ioloDMLog.txt
u2wg.0.exe
u2wg.1.exe
memory/1120-36-0x0000000061E00000-0x0000000061EF3000-memory.dmp
memory/1120-169-0x0000000000400000-0x0000000000793000-memory.dmp
memory/1120-87-0x0000000000400000-0x0000000000793000-memory.dmp
memory/1120-35-0x0000000000400000-0x0000000000793000-memory.dmp
memory/2652-113-0x000002C8BDC60000-0x000002C8BDC84000-memory.dmp
memory/2652-126-0x000002C8BE100000-0x000002C8BE400000-memory.dmp
memory/2652-170-0x000002C8BE720000-0x000002C8BE73E000-memory.dmp
memory/2652-163-0x000002C8C2C70000-0x000002C8C2CE6000-memory.dmp
memory/2652-162-0x000002C8C2B90000-0x000002C8C2B9C000-memory.dmp
memory/2652-108-0x000002C89FCF0000-0x000002C8A3524000-memory.dmp
memory/2652-109-0x000002C8BDD50000-0x000002C8BDE5A000-memory.dmp
memory/2652-110-0x000002C8BD9E0000-0x000002C8BD9F0000-memory.dmp
memory/2652-111-0x000002C8BDC00000-0x000002C8BDC0C000-memory.dmp
memory/2652-112-0x000002C8BDBF0000-0x000002C8BDC04000-memory.dmp
memory/2652-159-0x000002C8C33A0000-0x000002C8C38C8000-memory.dmp
memory/2652-118-0x000002C8BDCE0000-0x000002C8BDD0A000-memory.dmp
memory/2652-117-0x000002C8BDC90000-0x000002C8BDC9A000-memory.dmp
memory/2652-119-0x000002C8BDFB0000-0x000002C8BE062000-memory.dmp
memory/2652-120-0x000002C8BE0B0000-0x000002C8BE100000-memory.dmp
memory/2652-121-0x000002C8BE060000-0x000002C8BE082000-memory.dmp
memory/2652-122-0x000002C8BDCA0000-0x000002C8BDCAA000-memory.dmp
memory/2652-151-0x000002C8C2B70000-0x000002C8C2B92000-memory.dmp
memory/2652-150-0x000002C8C2E10000-0x000002C8C2E72000-memory.dmp
memory/2652-149-0x000002C8C2DF0000-0x000002C8C2DFA000-memory.dmp
memory/2652-145-0x000002C8C2B40000-0x000002C8C2B48000-memory.dmp
memory/2652-146-0x000002C8C24C0000-0x000002C8C24F8000-memory.dmp
memory/2652-147-0x000002C8C2490000-0x000002C8C249E000-memory.dmp
memory/2652-148-0x000002C8C24B0000-0x000002C8C24B8000-memory.dmp
memory/3760-27-0x0000000000400000-0x00000000004A5000-memory.dmp
memory/3760-28-0x00000000021C0000-0x000000000222C000-memory.dmp
memory/3760-1-0x00000000006D0000-0x00000000007D0000-memory.dmp
memory/3760-3-0x0000000000400000-0x000000000046F000-memory.dmp
memory/3760-2-0x00000000021C0000-0x000000000222C000-memory.dmp
memory/3760-29-0x0000000000400000-0x000000000046F000-memory.dmp
memory/4916-22-0x0000000000400000-0x00000000008AD000-memory.dmp
memory/4916-107-0x0000000000400000-0x00000000008AD000-memory.dmp
memory/4916-91-0x0000000000400000-0x00000000008AD000-memory.dmp