Analysis
-
max time kernel
91s -
max time network
93s -
platform
windows11-21h2_x64 -
resource
win11-20240508-en -
resource tags
arch:x64arch:x86image:win11-20240508-enlocale:en-usos:windows11-21h2-x64system -
submitted
24-05-2024 21:56
Static task
static1
Behavioral task
behavioral1
Sample
0d55b3f94e74aaf508391c04d3e7c2a74be1977c59bef2d07f8c84f8f4387d5b.exe
Resource
win10v2004-20240426-en
General
-
Target
0d55b3f94e74aaf508391c04d3e7c2a74be1977c59bef2d07f8c84f8f4387d5b.exe
-
Size
2.0MB
-
MD5
00c3509aa5a810f4fa04fdcfba6ac4c1
-
SHA1
5ac0c1b6997604643f66a3695225ae429ce59092
-
SHA256
0d55b3f94e74aaf508391c04d3e7c2a74be1977c59bef2d07f8c84f8f4387d5b
-
SHA512
925bc195d73486b8501422bfda5a9f533c57467c636a6ae9cdb1471606d882094660b3ec3afdcee30d66aa1be08db826d41b93e4c8c7694b15fc395396c9eea3
-
SSDEEP
49152:s4K3x1vUqJtTF+TxMoxc1TU+j+dAzGwlrh:s4Ex18qtIuoITsdZ
Malware Config
Extracted
stealc
Extracted
vidar
https://steamcommunity.com/profiles/76561199689717899
https://t.me/copterwin
-
user_agent
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:128.0) Gecko/20100101 Firefox/128.0
Signatures
-
Detect Vidar Stealer 14 IoCs
Processes:
resource yara_rule behavioral2/memory/2740-2-0x0000000004020000-0x0000000004169000-memory.dmp family_vidar_v7 behavioral2/memory/560-4-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/560-8-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/560-9-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/560-16-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/560-17-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/560-34-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/560-35-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/560-51-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/560-52-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/560-63-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/560-64-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/560-65-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/560-68-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 -
Downloads MZ/PE file
-
Executes dropped EXE 1 IoCs
Processes:
kat7B2B.tmppid process 560 kat7B2B.tmp -
Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
-
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.
-
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
Processes:
0d55b3f94e74aaf508391c04d3e7c2a74be1977c59bef2d07f8c84f8f4387d5b.exedescription pid process target process PID 2740 set thread context of 560 2740 0d55b3f94e74aaf508391c04d3e7c2a74be1977c59bef2d07f8c84f8f4387d5b.exe kat7B2B.tmp -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
-
Checks processor information in registry 2 TTPs 1 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
kat7B2B.tmpdescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat7B2B.tmp -
Delays execution with timeout.exe 1 IoCs
Processes:
timeout.exepid process 1368 timeout.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
kat7B2B.tmppid process 560 kat7B2B.tmp 560 kat7B2B.tmp 560 kat7B2B.tmp 560 kat7B2B.tmp -
Suspicious use of WriteProcessMemory 14 IoCs
Processes:
0d55b3f94e74aaf508391c04d3e7c2a74be1977c59bef2d07f8c84f8f4387d5b.exekat7B2B.tmpcmd.exedescription pid process target process PID 2740 wrote to memory of 560 2740 0d55b3f94e74aaf508391c04d3e7c2a74be1977c59bef2d07f8c84f8f4387d5b.exe kat7B2B.tmp PID 2740 wrote to memory of 560 2740 0d55b3f94e74aaf508391c04d3e7c2a74be1977c59bef2d07f8c84f8f4387d5b.exe kat7B2B.tmp PID 2740 wrote to memory of 560 2740 0d55b3f94e74aaf508391c04d3e7c2a74be1977c59bef2d07f8c84f8f4387d5b.exe kat7B2B.tmp PID 2740 wrote to memory of 560 2740 0d55b3f94e74aaf508391c04d3e7c2a74be1977c59bef2d07f8c84f8f4387d5b.exe kat7B2B.tmp PID 2740 wrote to memory of 560 2740 0d55b3f94e74aaf508391c04d3e7c2a74be1977c59bef2d07f8c84f8f4387d5b.exe kat7B2B.tmp PID 2740 wrote to memory of 560 2740 0d55b3f94e74aaf508391c04d3e7c2a74be1977c59bef2d07f8c84f8f4387d5b.exe kat7B2B.tmp PID 2740 wrote to memory of 560 2740 0d55b3f94e74aaf508391c04d3e7c2a74be1977c59bef2d07f8c84f8f4387d5b.exe kat7B2B.tmp PID 2740 wrote to memory of 560 2740 0d55b3f94e74aaf508391c04d3e7c2a74be1977c59bef2d07f8c84f8f4387d5b.exe kat7B2B.tmp PID 560 wrote to memory of 4904 560 kat7B2B.tmp cmd.exe PID 560 wrote to memory of 4904 560 kat7B2B.tmp cmd.exe PID 560 wrote to memory of 4904 560 kat7B2B.tmp cmd.exe PID 4904 wrote to memory of 1368 4904 cmd.exe timeout.exe PID 4904 wrote to memory of 1368 4904 cmd.exe timeout.exe PID 4904 wrote to memory of 1368 4904 cmd.exe timeout.exe
Processes
-
C:\Users\Admin\AppData\Local\Temp\0d55b3f94e74aaf508391c04d3e7c2a74be1977c59bef2d07f8c84f8f4387d5b.exe"C:\Users\Admin\AppData\Local\Temp\0d55b3f94e74aaf508391c04d3e7c2a74be1977c59bef2d07f8c84f8f4387d5b.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\kat7B2B.tmpC:\Users\Admin\AppData\Local\Temp\kat7B2B.tmp2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Users\Admin\AppData\Local\Temp\kat7B2B.tmp" & rd /s /q "C:\ProgramData\JKFCBAEHCAEG" & exit3⤵
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\timeout.exetimeout /t 104⤵
- Delays execution with timeout.exe
Network
MITRE ATT&CK Matrix ATT&CK v13
Replay Monitor
Loading Replay Monitor...
Downloads
-
C:\Users\Admin\AppData\Local\Temp\kat7B2B.tmpFilesize
861KB
MD566064dbdb70a5eb15ebf3bf65aba254b
SHA10284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA2566a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f
-
memory/560-17-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
-
memory/560-63-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
-
memory/560-20-0x000000001B810000-0x000000001BA6F000-memory.dmpFilesize
2.4MB
-
memory/560-8-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
-
memory/560-34-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
-
memory/560-9-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
-
memory/560-16-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
-
memory/560-35-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
-
memory/560-68-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
-
memory/560-65-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
-
memory/560-64-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
-
memory/560-51-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
-
memory/560-52-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
-
memory/560-4-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
-
memory/2740-0-0x0000000002340000-0x0000000002341000-memory.dmpFilesize
4KB
-
memory/2740-10-0x0000000000400000-0x000000000060C000-memory.dmpFilesize
2.0MB
-
memory/2740-2-0x0000000004020000-0x0000000004169000-memory.dmpFilesize
1.3MB