Analysis
-
max time kernel
110s -
max time network
119s -
platform
windows10_x64 -
resource
win10-en-20211104 -
submitted
25-11-2021 16:50
Static task
static1
Behavioral task
behavioral1
Sample
3c84cce3867660912739106e235ed948.exe
Resource
win7-en-20211104
General
-
Target
3c84cce3867660912739106e235ed948.exe
-
Size
375KB
-
MD5
3c84cce3867660912739106e235ed948
-
SHA1
a2236630a73791330822d68db8e1e6c4fe61b183
-
SHA256
4ba7148fbd3d102ac4ff4da19e24130c7708da3a5a6ff0dd73508892e56e7cb1
-
SHA512
25cf3859e0c4487d39d62815245f7d5797d766de3cb2afa4924d4a38b70e032debc1926a4fde7031bb6205e004a689728aa8c04b5dd921d5fee9eefff098b361
Malware Config
Extracted
arkei
Default
http://die-grausamste-herrin.at/wp.php
Signatures
-
Arkei Stealer Payload 3 IoCs
Processes:
resource yara_rule behavioral2/memory/1248-126-0x0000000000400000-0x0000000000424000-memory.dmp family_arkei behavioral2/memory/1248-127-0x0000000000406690-mapping.dmp family_arkei behavioral2/memory/1248-128-0x0000000000400000-0x0000000000424000-memory.dmp family_arkei -
Downloads MZ/PE file
-
Loads dropped DLL 3 IoCs
Processes:
3c84cce3867660912739106e235ed948.exepid process 1248 3c84cce3867660912739106e235ed948.exe 1248 3c84cce3867660912739106e235ed948.exe 1248 3c84cce3867660912739106e235ed948.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.
-
Suspicious use of SetThreadContext 1 IoCs
Processes:
3c84cce3867660912739106e235ed948.exedescription pid process target process PID 3804 set thread context of 1248 3804 3c84cce3867660912739106e235ed948.exe 3c84cce3867660912739106e235ed948.exe -
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:
3c84cce3867660912739106e235ed948.exedescription ioc process Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 3c84cce3867660912739106e235ed948.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString 3c84cce3867660912739106e235ed948.exe -
Delays execution with timeout.exe 1 IoCs
Processes:
timeout.exepid process 3416 timeout.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
3c84cce3867660912739106e235ed948.exepid process 3804 3c84cce3867660912739106e235ed948.exe 3804 3c84cce3867660912739106e235ed948.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
3c84cce3867660912739106e235ed948.exedescription pid process Token: SeDebugPrivilege 3804 3c84cce3867660912739106e235ed948.exe -
Suspicious use of WriteProcessMemory 18 IoCs
Processes:
3c84cce3867660912739106e235ed948.exe3c84cce3867660912739106e235ed948.execmd.exedescription pid process target process PID 3804 wrote to memory of 876 3804 3c84cce3867660912739106e235ed948.exe 3c84cce3867660912739106e235ed948.exe PID 3804 wrote to memory of 876 3804 3c84cce3867660912739106e235ed948.exe 3c84cce3867660912739106e235ed948.exe PID 3804 wrote to memory of 876 3804 3c84cce3867660912739106e235ed948.exe 3c84cce3867660912739106e235ed948.exe PID 3804 wrote to memory of 1248 3804 3c84cce3867660912739106e235ed948.exe 3c84cce3867660912739106e235ed948.exe PID 3804 wrote to memory of 1248 3804 3c84cce3867660912739106e235ed948.exe 3c84cce3867660912739106e235ed948.exe PID 3804 wrote to memory of 1248 3804 3c84cce3867660912739106e235ed948.exe 3c84cce3867660912739106e235ed948.exe PID 3804 wrote to memory of 1248 3804 3c84cce3867660912739106e235ed948.exe 3c84cce3867660912739106e235ed948.exe PID 3804 wrote to memory of 1248 3804 3c84cce3867660912739106e235ed948.exe 3c84cce3867660912739106e235ed948.exe PID 3804 wrote to memory of 1248 3804 3c84cce3867660912739106e235ed948.exe 3c84cce3867660912739106e235ed948.exe PID 3804 wrote to memory of 1248 3804 3c84cce3867660912739106e235ed948.exe 3c84cce3867660912739106e235ed948.exe PID 3804 wrote to memory of 1248 3804 3c84cce3867660912739106e235ed948.exe 3c84cce3867660912739106e235ed948.exe PID 3804 wrote to memory of 1248 3804 3c84cce3867660912739106e235ed948.exe 3c84cce3867660912739106e235ed948.exe PID 1248 wrote to memory of 1036 1248 3c84cce3867660912739106e235ed948.exe cmd.exe PID 1248 wrote to memory of 1036 1248 3c84cce3867660912739106e235ed948.exe cmd.exe PID 1248 wrote to memory of 1036 1248 3c84cce3867660912739106e235ed948.exe cmd.exe PID 1036 wrote to memory of 3416 1036 cmd.exe timeout.exe PID 1036 wrote to memory of 3416 1036 cmd.exe timeout.exe PID 1036 wrote to memory of 3416 1036 cmd.exe timeout.exe
Processes
-
C:\Users\Admin\AppData\Local\Temp\3c84cce3867660912739106e235ed948.exe"C:\Users\Admin\AppData\Local\Temp\3c84cce3867660912739106e235ed948.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\3c84cce3867660912739106e235ed948.exe"C:\Users\Admin\AppData\Local\Temp\3c84cce3867660912739106e235ed948.exe"2⤵
-
C:\Users\Admin\AppData\Local\Temp\3c84cce3867660912739106e235ed948.exe"C:\Users\Admin\AppData\Local\Temp\3c84cce3867660912739106e235ed948.exe"2⤵
- Loads dropped DLL
- Checks processor information in registry
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Users\Admin\AppData\Local\Temp\3c84cce3867660912739106e235ed948.exe" & exit3⤵
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\timeout.exetimeout /t 54⤵
- 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
-
\ProgramData\sqlite3.dllMD5
e477a96c8f2b18d6b5c27bde49c990bf
SHA1e980c9bf41330d1e5bd04556db4646a0210f7409
SHA25616574f51785b0e2fc29c2c61477eb47bb39f714829999511dc8952b43ab17660
SHA512335a86268e7c0e568b1c30981ec644e6cd332e66f96d2551b58a82515316693c1859d87b4f4b7310cf1ac386cee671580fdd999c3bcb23acf2c2282c01c8798c
-
memory/1036-132-0x0000000000000000-mapping.dmp
-
memory/1248-127-0x0000000000406690-mapping.dmp
-
memory/1248-128-0x0000000000400000-0x0000000000424000-memory.dmpFilesize
144KB
-
memory/1248-126-0x0000000000400000-0x0000000000424000-memory.dmpFilesize
144KB
-
memory/3416-133-0x0000000000000000-mapping.dmp
-
memory/3804-122-0x0000000004930000-0x0000000004E2E000-memory.dmpFilesize
5.0MB
-
memory/3804-125-0x00000000086A0000-0x000000000875B000-memory.dmpFilesize
748KB
-
memory/3804-124-0x0000000004930000-0x0000000004E2E000-memory.dmpFilesize
5.0MB
-
memory/3804-123-0x00000000024D0000-0x00000000024D1000-memory.dmpFilesize
4KB
-
memory/3804-118-0x00000000000A0000-0x00000000000A1000-memory.dmpFilesize
4KB
-
memory/3804-121-0x00000000049D0000-0x00000000049D1000-memory.dmpFilesize
4KB
-
memory/3804-120-0x0000000004E30000-0x0000000004E31000-memory.dmpFilesize
4KB