Analysis
-
max time kernel
81s -
max time network
132s -
platform
windows10_x64 -
resource
win10-en-20210920 -
submitted
12-10-2021 15:40
Static task
static1
General
-
Target
fac9acf2d470cfc1cc63be47a41f6fc72320b34a8aea30c139f7ddaf991170c3.exe
-
Size
636KB
-
MD5
ae0c8d3b7c13c462b6fe5b8b833711e4
-
SHA1
6bf35810157a563a1391448ba071d03e84ff2857
-
SHA256
fac9acf2d470cfc1cc63be47a41f6fc72320b34a8aea30c139f7ddaf991170c3
-
SHA512
7642726b44b28f5058e7c4372f9a0c3610749259d354bd3d8a9bf33e866d8092a1587f1f9872ff09f574f6eec6da73d9798c9626f28d0c9aca20a9bc857c1965
Malware Config
Extracted
vidar
41.3
1008
https://mas.to/@oleg98
-
profile_id
1008
Signatures
-
suricata: ET MALWARE Suspicious Zipped Filename in Outbound POST Request (Passwords.txt)
suricata: ET MALWARE Suspicious Zipped Filename in Outbound POST Request (Passwords.txt)
-
suricata: ET MALWARE Vidar/Arkei Stealer Client Data Upload
suricata: ET MALWARE Vidar/Arkei Stealer Client Data Upload
-
suricata: ET MALWARE Vidar/Arkei/Megumin/Oski Stealer Data Exfil
suricata: ET MALWARE Vidar/Arkei/Megumin/Oski Stealer Data Exfil
-
Vidar Stealer 1 IoCs
Processes:
resource yara_rule behavioral1/memory/2472-117-0x0000000000400000-0x00000000004D9000-memory.dmp family_vidar -
Downloads MZ/PE file
-
Loads dropped DLL 2 IoCs
Processes:
fac9acf2d470cfc1cc63be47a41f6fc72320b34a8aea30c139f7ddaf991170c3.exepid process 2472 fac9acf2d470cfc1cc63be47a41f6fc72320b34a8aea30c139f7ddaf991170c3.exe 2472 fac9acf2d470cfc1cc63be47a41f6fc72320b34a8aea30c139f7ddaf991170c3.exe -
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). Likely ransomware behaviour.
-
Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
fac9acf2d470cfc1cc63be47a41f6fc72320b34a8aea30c139f7ddaf991170c3.exedescription ioc process Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 fac9acf2d470cfc1cc63be47a41f6fc72320b34a8aea30c139f7ddaf991170c3.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString fac9acf2d470cfc1cc63be47a41f6fc72320b34a8aea30c139f7ddaf991170c3.exe -
Delays execution with timeout.exe 1 IoCs
Processes:
timeout.exepid process 588 timeout.exe -
Kills process with taskkill 1 IoCs
Processes:
taskkill.exepid process 348 taskkill.exe -
Suspicious behavior: EnumeratesProcesses 8 IoCs
Processes:
fac9acf2d470cfc1cc63be47a41f6fc72320b34a8aea30c139f7ddaf991170c3.exepid process 2472 fac9acf2d470cfc1cc63be47a41f6fc72320b34a8aea30c139f7ddaf991170c3.exe 2472 fac9acf2d470cfc1cc63be47a41f6fc72320b34a8aea30c139f7ddaf991170c3.exe 2472 fac9acf2d470cfc1cc63be47a41f6fc72320b34a8aea30c139f7ddaf991170c3.exe 2472 fac9acf2d470cfc1cc63be47a41f6fc72320b34a8aea30c139f7ddaf991170c3.exe 2472 fac9acf2d470cfc1cc63be47a41f6fc72320b34a8aea30c139f7ddaf991170c3.exe 2472 fac9acf2d470cfc1cc63be47a41f6fc72320b34a8aea30c139f7ddaf991170c3.exe 2472 fac9acf2d470cfc1cc63be47a41f6fc72320b34a8aea30c139f7ddaf991170c3.exe 2472 fac9acf2d470cfc1cc63be47a41f6fc72320b34a8aea30c139f7ddaf991170c3.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
taskkill.exedescription pid process Token: SeDebugPrivilege 348 taskkill.exe -
Suspicious use of WriteProcessMemory 9 IoCs
Processes:
fac9acf2d470cfc1cc63be47a41f6fc72320b34a8aea30c139f7ddaf991170c3.execmd.exedescription pid process target process PID 2472 wrote to memory of 4056 2472 fac9acf2d470cfc1cc63be47a41f6fc72320b34a8aea30c139f7ddaf991170c3.exe cmd.exe PID 2472 wrote to memory of 4056 2472 fac9acf2d470cfc1cc63be47a41f6fc72320b34a8aea30c139f7ddaf991170c3.exe cmd.exe PID 2472 wrote to memory of 4056 2472 fac9acf2d470cfc1cc63be47a41f6fc72320b34a8aea30c139f7ddaf991170c3.exe cmd.exe PID 4056 wrote to memory of 348 4056 cmd.exe taskkill.exe PID 4056 wrote to memory of 348 4056 cmd.exe taskkill.exe PID 4056 wrote to memory of 348 4056 cmd.exe taskkill.exe PID 4056 wrote to memory of 588 4056 cmd.exe timeout.exe PID 4056 wrote to memory of 588 4056 cmd.exe timeout.exe PID 4056 wrote to memory of 588 4056 cmd.exe timeout.exe
Processes
-
C:\Users\Admin\AppData\Local\Temp\fac9acf2d470cfc1cc63be47a41f6fc72320b34a8aea30c139f7ddaf991170c3.exe"C:\Users\Admin\AppData\Local\Temp\fac9acf2d470cfc1cc63be47a41f6fc72320b34a8aea30c139f7ddaf991170c3.exe"1⤵
- Loads dropped DLL
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c taskkill /im fac9acf2d470cfc1cc63be47a41f6fc72320b34a8aea30c139f7ddaf991170c3.exe /f & timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\Temp\fac9acf2d470cfc1cc63be47a41f6fc72320b34a8aea30c139f7ddaf991170c3.exe" & del C:\ProgramData\*.dll & exit2⤵
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\taskkill.exetaskkill /im fac9acf2d470cfc1cc63be47a41f6fc72320b34a8aea30c139f7ddaf991170c3.exe /f3⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
-
C:\Windows\SysWOW64\timeout.exetimeout /t 63⤵
- Delays execution with timeout.exe
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
-
\ProgramData\mozglue.dllMD5
8f73c08a9660691143661bf7332c3c27
SHA137fa65dd737c50fda710fdbde89e51374d0c204a
SHA2563fe6b1c54b8cf28f571e0c5d6636b4069a8ab00b4f11dd842cfec00691d0c9cd
SHA5120042ecf9b3571bb5eba2de893e8b2371df18f7c5a589f52ee66e4bfbaa15a5b8b7cc6a155792aaa8988528c27196896d5e82e1751c998bacea0d92395f66ad89
-
\ProgramData\nss3.dllMD5
bfac4e3c5908856ba17d41edcd455a51
SHA18eec7e888767aa9e4cca8ff246eb2aacb9170428
SHA256e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78
SHA5122565bab776c4d732ffb1f9b415992a4c65b81bcd644a9a1df1333a269e322925fc1df4f76913463296efd7c88ef194c3056de2f1ca1357d7b5fe5ff0da877a66
-
memory/348-121-0x0000000000000000-mapping.dmp
-
memory/588-122-0x0000000000000000-mapping.dmp
-
memory/2472-115-0x0000000000781000-0x00000000007FE000-memory.dmpFilesize
500KB
-
memory/2472-116-0x0000000000580000-0x00000000006CA000-memory.dmpFilesize
1.3MB
-
memory/2472-117-0x0000000000400000-0x00000000004D9000-memory.dmpFilesize
868KB
-
memory/4056-120-0x0000000000000000-mapping.dmp