Analysis
-
max time kernel
120s -
max time network
121s -
platform
windows7_x64 -
resource
win7-20240903-en -
resource tags
arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system -
submitted
04/09/2024, 13:28
Static task
static1
Behavioral task
behavioral1
Sample
20240904f35b78f97f2b31cc26eabd0c1a2cf2efbkransomware.exe
Resource
win7-20240903-en
General
-
Target
20240904f35b78f97f2b31cc26eabd0c1a2cf2efbkransomware.exe
-
Size
1.4MB
-
MD5
f35b78f97f2b31cc26eabd0c1a2cf2ef
-
SHA1
75b50eed16180e7de405a3f636b31f35adfb2f39
-
SHA256
aa646f07e89ee8923523aab6c25d88612fa6e1f4802c7f7af212c5bbc5a60500
-
SHA512
92ce90cfd0f9c63e6171c810c2dc2864b33a75185be938ebc192220cd97880cff29d660d3a58a2cab4ff2313141f0c614a7a8d528c6e9a654e0e2f67061940a9
-
SSDEEP
24576:E30mJ529+RipvL1SXk1QE1RGOTnIEQc4au9NgxnHNnHTfEEClkR:EE/9+ApwXk1QE1RzsEQPaxHNHTfEJ2
Malware Config
Signatures
-
Modifies visibility of file extensions in Explorer 2 TTPs 1 IoCs
description ioc Process Set value (int) \REGISTRY\USER\S-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\HideFileExt = "1" tazebama.dl_ -
Modifies visiblity of hidden/system files in Explorer 2 TTPs 1 IoCs
description ioc Process Set value (int) \REGISTRY\USER\S-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" tazebama.dl_ -
Executes dropped EXE 1 IoCs
pid Process 3060 tazebama.dl_ -
Loads dropped DLL 7 IoCs
pid Process 1812 20240904f35b78f97f2b31cc26eabd0c1a2cf2efbkransomware.exe 1812 20240904f35b78f97f2b31cc26eabd0c1a2cf2efbkransomware.exe 1812 20240904f35b78f97f2b31cc26eabd0c1a2cf2efbkransomware.exe 2168 WerFault.exe 2168 WerFault.exe 2168 WerFault.exe 2168 WerFault.exe -
Enumerates connected drives 3 TTPs 21 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
description ioc Process File opened (read-only) \??\Q: tazebama.dl_ File opened (read-only) \??\L: tazebama.dl_ File opened (read-only) \??\I: tazebama.dl_ File opened (read-only) \??\Z: tazebama.dl_ File opened (read-only) \??\Y: tazebama.dl_ File opened (read-only) \??\W: tazebama.dl_ File opened (read-only) \??\V: tazebama.dl_ File opened (read-only) \??\S: tazebama.dl_ File opened (read-only) \??\G: tazebama.dl_ File opened (read-only) \??\T: tazebama.dl_ File opened (read-only) \??\M: tazebama.dl_ File opened (read-only) \??\U: tazebama.dl_ File opened (read-only) \??\R: tazebama.dl_ File opened (read-only) \??\O: tazebama.dl_ File opened (read-only) \??\K: tazebama.dl_ File opened (read-only) \??\E: tazebama.dl_ File opened (read-only) \??\X: tazebama.dl_ File opened (read-only) \??\P: tazebama.dl_ File opened (read-only) \??\N: tazebama.dl_ File opened (read-only) \??\J: tazebama.dl_ File opened (read-only) \??\H: tazebama.dl_ -
Drops autorun.inf file 1 TTPs 3 IoCs
Malware can abuse Windows Autorun to spread further via attached volumes.
description ioc Process File opened for modification C:\Documents and Settings\Admin\Local Settings\Application Data\Microsoft\CD Burning\autorun.inf tazebama.dl_ File opened for modification F:\autorun.inf tazebama.dl_ File opened for modification C:\autorun.inf tazebama.dl_ -
Drops file in Program Files directory 1 IoCs
description ioc Process File opened for modification C:\PROGRA~2\MICROS~1\OFFICE14\EXCEL.EXE tazebama.dl_ -
Program crash 1 IoCs
pid pid_target Process procid_target 2168 3060 WerFault.exe 30 -
System Location Discovery: System Language Discovery 1 TTPs 2 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 20240904f35b78f97f2b31cc26eabd0c1a2cf2efbkransomware.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language tazebama.dl_ -
Suspicious behavior: EnumeratesProcesses 1 IoCs
pid Process 3060 tazebama.dl_ -
Suspicious use of WriteProcessMemory 8 IoCs
description pid Process procid_target PID 1812 wrote to memory of 3060 1812 20240904f35b78f97f2b31cc26eabd0c1a2cf2efbkransomware.exe 30 PID 1812 wrote to memory of 3060 1812 20240904f35b78f97f2b31cc26eabd0c1a2cf2efbkransomware.exe 30 PID 1812 wrote to memory of 3060 1812 20240904f35b78f97f2b31cc26eabd0c1a2cf2efbkransomware.exe 30 PID 1812 wrote to memory of 3060 1812 20240904f35b78f97f2b31cc26eabd0c1a2cf2efbkransomware.exe 30 PID 3060 wrote to memory of 2168 3060 tazebama.dl_ 31 PID 3060 wrote to memory of 2168 3060 tazebama.dl_ 31 PID 3060 wrote to memory of 2168 3060 tazebama.dl_ 31 PID 3060 wrote to memory of 2168 3060 tazebama.dl_ 31
Processes
-
C:\Users\Admin\AppData\Local\Temp\20240904f35b78f97f2b31cc26eabd0c1a2cf2efbkransomware.exe"C:\Users\Admin\AppData\Local\Temp\20240904f35b78f97f2b31cc26eabd0c1a2cf2efbkransomware.exe"1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1812 -
C:\Documents and Settings\tazebama.dl_"C:\Documents and Settings\tazebama.dl_"2⤵
- Modifies visibility of file extensions in Explorer
- Modifies visiblity of hidden/system files in Explorer
- Executes dropped EXE
- Enumerates connected drives
- Drops autorun.inf file
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:3060 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 3060 -s 3203⤵
- Loads dropped DLL
- Program crash
PID:2168
-
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
-
Filesize
126B
MD5163e20cbccefcdd42f46e43a94173c46
SHA14c7b5048e8608e2a75799e00ecf1bbb4773279ae
SHA2567780bee9df142a17e0457f3dcb2788b50fc2792370089335597d33719126fb7e
SHA512e5ac0ff6b087857799ab70f68067c9dc73eeb93ccfcad87047052380b95ade3e6eb2a7d01a0f850d548a39f4b1ebb60e299d603dbe25c31b9a3585b34a0c65a8
-
Filesize
157KB
MD51dab265dd1ac51bd097cc9f394ae53ae
SHA159e3f8f9d034e928f97cdb12bf237e89dbfe4903
SHA2560a5ecf9ea78f3e9ce903eb9e26b7b431af82bddbabd946d72eb27f2851fd9928
SHA51273dcf598c6a4e54a92699094fa642124ed65245cf9276c44f924f6a75bf79c1c6b423476a0991546661dae6cf6155fdc806b9e2e80183ad9dca6ee197aebd2ba
-
Filesize
157KB
MD5fd07a18e76290f3067ac12c66d959736
SHA104d88210fcc0c1e5ccf459b0eedf27baaeb98071
SHA256405b9b23e535cb1d6a691374fca8873bf830d385f580153d68545b6c22393e31
SHA5123b97603dffd3fcec559b646410ab8ea12d3c72756a4be90ebc8ad2498030f63334f84cb23abf51bc6d4c1e2b7f7f5b6c435c0c351a148a73671875646aab2813
-
Filesize
157KB
MD5100394180aae34fdc4797513e7b14b83
SHA1f58f7f2b653745426c9582bf1e9632be420938af
SHA25662c32d8bf5b74a02bdf40a93b2ff8be46325ea622463706bf389d82bbc9c42be
SHA512905b11ad00572b61cb5f7e9bac9b13172e4527c90dd2588813d6b58ac58416e8bfeddc6ef068bdeb16e08ba8591670a70a9327ea4f4a13029d4cf407402899aa
-
Filesize
32KB
MD5b6a03576e595afacb37ada2f1d5a0529
SHA1d598d4d0e70dec2ffa2849edaeb4db94fedcc0b8
SHA2561707eaf60aa91f3791aa5643bfa038e9d8141878d61f5d701ebac51f4ae7aaad
SHA512181b7cc6479352fe2c53c3630d45a839cdeb74708be6709c2a75847a54de3ffc1fdac8450270dde7174ecb23e5cb002f8ce39032429a3112b1202f3381b8918c