Analysis
-
max time kernel
144s -
max time network
157s -
platform
windows10-2004_x64 -
resource
win10v2004-20220414-en -
submitted
01-07-2022 14:39
Static task
static1
Behavioral task
behavioral1
Sample
3dbe4ac636009db48dd8a59bcfb36f4746da80b55603a7395a04c3c297d99454.exe
Resource
win7-20220414-en
General
-
Target
3dbe4ac636009db48dd8a59bcfb36f4746da80b55603a7395a04c3c297d99454.exe
-
Size
3.7MB
-
MD5
bb42a11790611d99f931f88aa57f127b
-
SHA1
11e858ad7051205d8e2701b17f30fed1a462c772
-
SHA256
3dbe4ac636009db48dd8a59bcfb36f4746da80b55603a7395a04c3c297d99454
-
SHA512
7607591ffd5aae818327bcd942ad61bff650fe252376675d0baacbc9d0bddaa0357a127efd4e674d1013e7f5987b91b14f5e9a08d9ad743726a24409a6628777
Malware Config
Extracted
vidar
10.6
231
http://coinchangerapi.com/
-
profile_id
231
Signatures
-
suricata: ET MALWARE Vidar/Arkei/Megumin/Oski Stealer HTTP POST Pattern
suricata: ET MALWARE Vidar/Arkei/Megumin/Oski Stealer HTTP POST Pattern
-
Vidar Stealer 2 IoCs
Processes:
resource yara_rule behavioral2/memory/4876-139-0x0000000000400000-0x00000000004DB000-memory.dmp family_vidar behavioral2/memory/4876-141-0x0000000000400000-0x00000000004DB000-memory.dmp family_vidar -
Executes dropped EXE 2 IoCs
Processes:
busshost.exeYTLoader.exepid process 4876 busshost.exe 540 YTLoader.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
3dbe4ac636009db48dd8a59bcfb36f4746da80b55603a7395a04c3c297d99454.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Control Panel\International\Geo\Nation 3dbe4ac636009db48dd8a59bcfb36f4746da80b55603a7395a04c3c297d99454.exe -
Reads local data of messenger clients 2 TTPs
Infostealers often target stored data of messaging applications, which can include saved credentials and account information.
-
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.
-
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
-
Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
Processes:
flow ioc 27 ip-api.com -
Drops file in Program Files directory 4 IoCs
Processes:
3dbe4ac636009db48dd8a59bcfb36f4746da80b55603a7395a04c3c297d99454.exedescription ioc process File opened for modification C:\Program Files (x86)\LetsSee!\YTLoader.exe 3dbe4ac636009db48dd8a59bcfb36f4746da80b55603a7395a04c3c297d99454.exe File opened for modification C:\Program Files (x86)\LetsSee!\busshost.exe 3dbe4ac636009db48dd8a59bcfb36f4746da80b55603a7395a04c3c297d99454.exe File opened for modification C:\Program Files (x86)\LetsSee!\Uninstall.exe 3dbe4ac636009db48dd8a59bcfb36f4746da80b55603a7395a04c3c297d99454.exe File created C:\Program Files (x86)\LetsSee!\Uninstall.ini 3dbe4ac636009db48dd8a59bcfb36f4746da80b55603a7395a04c3c297d99454.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
-
Program crash 1 IoCs
Processes:
WerFault.exepid pid_target process target process 4956 540 WerFault.exe YTLoader.exe -
Checks processor information in registry 2 TTPs 4 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
busshost.exeYTLoader.exedescription ioc process Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 busshost.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString busshost.exe Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 YTLoader.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString YTLoader.exe -
Enumerates system info in registry 2 TTPs 3 IoCs
Processes:
YTLoader.exedescription ioc process Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS YTLoader.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemManufacturer YTLoader.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemProductName YTLoader.exe -
Suspicious behavior: EnumeratesProcesses 8 IoCs
Processes:
busshost.exepid process 4876 busshost.exe 4876 busshost.exe 4876 busshost.exe 4876 busshost.exe 4876 busshost.exe 4876 busshost.exe 4876 busshost.exe 4876 busshost.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
YTLoader.exedescription pid process Token: SeDebugPrivilege 540 YTLoader.exe -
Suspicious use of WriteProcessMemory 6 IoCs
Processes:
3dbe4ac636009db48dd8a59bcfb36f4746da80b55603a7395a04c3c297d99454.exedescription pid process target process PID 3540 wrote to memory of 4876 3540 3dbe4ac636009db48dd8a59bcfb36f4746da80b55603a7395a04c3c297d99454.exe busshost.exe PID 3540 wrote to memory of 4876 3540 3dbe4ac636009db48dd8a59bcfb36f4746da80b55603a7395a04c3c297d99454.exe busshost.exe PID 3540 wrote to memory of 4876 3540 3dbe4ac636009db48dd8a59bcfb36f4746da80b55603a7395a04c3c297d99454.exe busshost.exe PID 3540 wrote to memory of 540 3540 3dbe4ac636009db48dd8a59bcfb36f4746da80b55603a7395a04c3c297d99454.exe YTLoader.exe PID 3540 wrote to memory of 540 3540 3dbe4ac636009db48dd8a59bcfb36f4746da80b55603a7395a04c3c297d99454.exe YTLoader.exe PID 3540 wrote to memory of 540 3540 3dbe4ac636009db48dd8a59bcfb36f4746da80b55603a7395a04c3c297d99454.exe YTLoader.exe
Processes
-
C:\Users\Admin\AppData\Local\Temp\3dbe4ac636009db48dd8a59bcfb36f4746da80b55603a7395a04c3c297d99454.exe"C:\Users\Admin\AppData\Local\Temp\3dbe4ac636009db48dd8a59bcfb36f4746da80b55603a7395a04c3c297d99454.exe"1⤵
- Checks computer location settings
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
-
C:\Program Files (x86)\LetsSee!\busshost.exe"C:\Program Files (x86)\LetsSee!\busshost.exe"2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
-
C:\Program Files (x86)\LetsSee!\YTLoader.exe"C:\Program Files (x86)\LetsSee!\YTLoader.exe"2⤵
- Executes dropped EXE
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious use of AdjustPrivilegeToken
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 540 -s 16083⤵
- Program crash
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 540 -ip 5401⤵
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
-
C:\Program Files (x86)\LetsSee!\YTLoader.exeFilesize
3.0MB
MD5adc9db2753fa3daa6a8156254ba2a5f1
SHA150ff27e2e1c4acc35768b93b73c03f7630027f04
SHA256f8cc40321301d39f03eaa48d42cbbb2e953b694dc13ccf9d986032c621223fde
SHA5125f7fca8da622035f3a83e562d727ccdd842d623ec376f93c75c3218bddd970c34a9efc66a33cfd6e52a398fa2ed090b890d05aecef53f65a22917d50d31a1195
-
C:\Program Files (x86)\LetsSee!\YTLoader.exeFilesize
3.0MB
MD5adc9db2753fa3daa6a8156254ba2a5f1
SHA150ff27e2e1c4acc35768b93b73c03f7630027f04
SHA256f8cc40321301d39f03eaa48d42cbbb2e953b694dc13ccf9d986032c621223fde
SHA5125f7fca8da622035f3a83e562d727ccdd842d623ec376f93c75c3218bddd970c34a9efc66a33cfd6e52a398fa2ed090b890d05aecef53f65a22917d50d31a1195
-
C:\Program Files (x86)\LetsSee!\busshost.exeFilesize
787KB
MD55f840e1f2ec8ce4d72e41b6d24a27e32
SHA1a1e5a1a37d056c2df261811ce370294b770a2353
SHA25644d0564b5ed42a8e85db0ef28d9b5b16a1e764711751d95b29a5f836735980cb
SHA5123e4eed292d07f7dafa46703fcd20a97a027c0c8a93d2921b0fbf4bdcc16795ac9ff4d6631ee6de957b6549c5076d8552ffd8286e14fc1db8e31bfc112a4a6a37
-
C:\Program Files (x86)\LetsSee!\busshost.exeFilesize
787KB
MD55f840e1f2ec8ce4d72e41b6d24a27e32
SHA1a1e5a1a37d056c2df261811ce370294b770a2353
SHA25644d0564b5ed42a8e85db0ef28d9b5b16a1e764711751d95b29a5f836735980cb
SHA5123e4eed292d07f7dafa46703fcd20a97a027c0c8a93d2921b0fbf4bdcc16795ac9ff4d6631ee6de957b6549c5076d8552ffd8286e14fc1db8e31bfc112a4a6a37
-
memory/540-143-0x0000000005140000-0x0000000005148000-memory.dmpFilesize
32KB
-
memory/540-145-0x0000000005170000-0x0000000005178000-memory.dmpFilesize
32KB
-
memory/540-136-0x0000000000440000-0x0000000000748000-memory.dmpFilesize
3.0MB
-
memory/540-149-0x00000000058B0000-0x00000000058B8000-memory.dmpFilesize
32KB
-
memory/540-148-0x00000000051B0000-0x00000000051B8000-memory.dmpFilesize
32KB
-
memory/540-147-0x00000000051A0000-0x00000000051A8000-memory.dmpFilesize
32KB
-
memory/540-146-0x0000000005180000-0x0000000005188000-memory.dmpFilesize
32KB
-
memory/540-142-0x0000000005130000-0x000000000513A000-memory.dmpFilesize
40KB
-
memory/540-133-0x0000000000000000-mapping.dmp
-
memory/540-144-0x0000000005160000-0x0000000005168000-memory.dmpFilesize
32KB
-
memory/4876-130-0x0000000000000000-mapping.dmp
-
memory/4876-141-0x0000000000400000-0x00000000004DB000-memory.dmpFilesize
876KB
-
memory/4876-140-0x0000000002170000-0x0000000002270000-memory.dmpFilesize
1024KB
-
memory/4876-139-0x0000000000400000-0x00000000004DB000-memory.dmpFilesize
876KB
-
memory/4876-138-0x0000000002170000-0x0000000002270000-memory.dmpFilesize
1024KB