Analysis
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max time kernel
139s -
max time network
158s -
platform
windows10-2004_x64 -
resource
win10v2004-20220414-en -
submitted
29-05-2022 15:28
Static task
static1
Behavioral task
behavioral1
Sample
0e0846dd849ea31683a9607fec8abb978d8d76e9cea4c74f8dbb82a5174e2390.exe
Resource
win7-20220414-en
General
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Target
0e0846dd849ea31683a9607fec8abb978d8d76e9cea4c74f8dbb82a5174e2390.exe
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Size
3.6MB
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MD5
4908a5269ae50153f27efe258828e4f8
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SHA1
00c7bc3f6e0e6180366b2ecb2dc9655a13c5fc43
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SHA256
0e0846dd849ea31683a9607fec8abb978d8d76e9cea4c74f8dbb82a5174e2390
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SHA512
4979dcd29e7b4757b40ce3a1f88edc39deeed8a3e731361688c6c56fe76e753da522eb4b1c6e0c5bb1f11eee387129f12b9f129810fdebaff5deea820367e757
Malware Config
Extracted
vidar
9.6
231
http://iloveshaus.com/
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profile_id
231
Signatures
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suricata: ET MALWARE Vidar/Arkei/Megumin/Oski Stealer HTTP POST Pattern
suricata: ET MALWARE Vidar/Arkei/Megumin/Oski Stealer HTTP POST Pattern
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Vidar Stealer 2 IoCs
Processes:
resource yara_rule behavioral2/memory/4328-147-0x0000000000400000-0x00000000004E4000-memory.dmp family_vidar behavioral2/memory/4328-149-0x0000000000400000-0x00000000004E4000-memory.dmp family_vidar -
Executes dropped EXE 2 IoCs
Processes:
busshost.exeYTLoader.exepid process 4328 busshost.exe 4896 YTLoader.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
0e0846dd849ea31683a9607fec8abb978d8d76e9cea4c74f8dbb82a5174e2390.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Control Panel\International\Geo\Nation 0e0846dd849ea31683a9607fec8abb978d8d76e9cea4c74f8dbb82a5174e2390.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.
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Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
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Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
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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 33 ip-api.com -
Drops file in Program Files directory 4 IoCs
Processes:
0e0846dd849ea31683a9607fec8abb978d8d76e9cea4c74f8dbb82a5174e2390.exedescription ioc process File opened for modification C:\Program Files (x86)\LetsSee!\YTLoader.exe 0e0846dd849ea31683a9607fec8abb978d8d76e9cea4c74f8dbb82a5174e2390.exe File opened for modification C:\Program Files (x86)\LetsSee!\busshost.exe 0e0846dd849ea31683a9607fec8abb978d8d76e9cea4c74f8dbb82a5174e2390.exe File opened for modification C:\Program Files (x86)\LetsSee!\Uninstall.exe 0e0846dd849ea31683a9607fec8abb978d8d76e9cea4c74f8dbb82a5174e2390.exe File created C:\Program Files (x86)\LetsSee!\Uninstall.ini 0e0846dd849ea31683a9607fec8abb978d8d76e9cea4c74f8dbb82a5174e2390.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Program crash 1 IoCs
Processes:
WerFault.exepid pid_target process target process 2164 4896 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:
YTLoader.exebusshost.exedescription ioc process Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 YTLoader.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString YTLoader.exe Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 busshost.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString busshost.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 4328 busshost.exe 4328 busshost.exe 4328 busshost.exe 4328 busshost.exe 4328 busshost.exe 4328 busshost.exe 4328 busshost.exe 4328 busshost.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
YTLoader.exedescription pid process Token: SeDebugPrivilege 4896 YTLoader.exe -
Suspicious use of WriteProcessMemory 6 IoCs
Processes:
0e0846dd849ea31683a9607fec8abb978d8d76e9cea4c74f8dbb82a5174e2390.exedescription pid process target process PID 2612 wrote to memory of 4328 2612 0e0846dd849ea31683a9607fec8abb978d8d76e9cea4c74f8dbb82a5174e2390.exe busshost.exe PID 2612 wrote to memory of 4328 2612 0e0846dd849ea31683a9607fec8abb978d8d76e9cea4c74f8dbb82a5174e2390.exe busshost.exe PID 2612 wrote to memory of 4328 2612 0e0846dd849ea31683a9607fec8abb978d8d76e9cea4c74f8dbb82a5174e2390.exe busshost.exe PID 2612 wrote to memory of 4896 2612 0e0846dd849ea31683a9607fec8abb978d8d76e9cea4c74f8dbb82a5174e2390.exe YTLoader.exe PID 2612 wrote to memory of 4896 2612 0e0846dd849ea31683a9607fec8abb978d8d76e9cea4c74f8dbb82a5174e2390.exe YTLoader.exe PID 2612 wrote to memory of 4896 2612 0e0846dd849ea31683a9607fec8abb978d8d76e9cea4c74f8dbb82a5174e2390.exe YTLoader.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\0e0846dd849ea31683a9607fec8abb978d8d76e9cea4c74f8dbb82a5174e2390.exe"C:\Users\Admin\AppData\Local\Temp\0e0846dd849ea31683a9607fec8abb978d8d76e9cea4c74f8dbb82a5174e2390.exe"1⤵
- Checks computer location settings
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
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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
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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
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4896 -s 9963⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 4896 -ip 48961⤵
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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C:\Program Files (x86)\LetsSee!\YTLoader.exeFilesize
3.0MB
MD5adc9db2753fa3daa6a8156254ba2a5f1
SHA150ff27e2e1c4acc35768b93b73c03f7630027f04
SHA256f8cc40321301d39f03eaa48d42cbbb2e953b694dc13ccf9d986032c621223fde
SHA5125f7fca8da622035f3a83e562d727ccdd842d623ec376f93c75c3218bddd970c34a9efc66a33cfd6e52a398fa2ed090b890d05aecef53f65a22917d50d31a1195
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C:\Program Files (x86)\LetsSee!\YTLoader.exeFilesize
3.0MB
MD5adc9db2753fa3daa6a8156254ba2a5f1
SHA150ff27e2e1c4acc35768b93b73c03f7630027f04
SHA256f8cc40321301d39f03eaa48d42cbbb2e953b694dc13ccf9d986032c621223fde
SHA5125f7fca8da622035f3a83e562d727ccdd842d623ec376f93c75c3218bddd970c34a9efc66a33cfd6e52a398fa2ed090b890d05aecef53f65a22917d50d31a1195
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C:\Program Files (x86)\LetsSee!\busshost.exeFilesize
606KB
MD5e46f9d9dacf450b08aaf7ffa451aafc4
SHA135f639c0eaff214a34e41250585c1c121f52d279
SHA256a8dc269f0b8b8b7b4b2f57b6a85fa85290803d5373031db7b283a51f0a1d3360
SHA51203a80ccf4f673c9715d44c2c83f3d0963ad3a5ac28c70e49a4629d15da9d5a381ebdf05323dcfd092c9dd7c3ba30b6fa56c32612f3e0015569c34b3e6b0e9eda
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C:\Program Files (x86)\LetsSee!\busshost.exeFilesize
606KB
MD5e46f9d9dacf450b08aaf7ffa451aafc4
SHA135f639c0eaff214a34e41250585c1c121f52d279
SHA256a8dc269f0b8b8b7b4b2f57b6a85fa85290803d5373031db7b283a51f0a1d3360
SHA51203a80ccf4f673c9715d44c2c83f3d0963ad3a5ac28c70e49a4629d15da9d5a381ebdf05323dcfd092c9dd7c3ba30b6fa56c32612f3e0015569c34b3e6b0e9eda
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memory/4328-146-0x0000000002210000-0x0000000002310000-memory.dmpFilesize
1024KB
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memory/4328-130-0x0000000000000000-mapping.dmp
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memory/4328-149-0x0000000000400000-0x00000000004E4000-memory.dmpFilesize
912KB
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memory/4328-148-0x0000000002210000-0x0000000002310000-memory.dmpFilesize
1024KB
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memory/4328-147-0x0000000000400000-0x00000000004E4000-memory.dmpFilesize
912KB
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memory/4896-138-0x0000000005C00000-0x0000000005C08000-memory.dmpFilesize
32KB
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memory/4896-140-0x0000000005C30000-0x0000000005C38000-memory.dmpFilesize
32KB
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memory/4896-141-0x0000000005C40000-0x0000000005C48000-memory.dmpFilesize
32KB
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memory/4896-142-0x0000000005C60000-0x0000000005C68000-memory.dmpFilesize
32KB
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memory/4896-143-0x0000000005C70000-0x0000000005C78000-memory.dmpFilesize
32KB
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memory/4896-144-0x0000000005C80000-0x0000000005C88000-memory.dmpFilesize
32KB
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memory/4896-139-0x0000000005C20000-0x0000000005C28000-memory.dmpFilesize
32KB
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memory/4896-137-0x0000000005AE0000-0x0000000005AEA000-memory.dmpFilesize
40KB
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memory/4896-136-0x0000000000DD0000-0x00000000010D8000-memory.dmpFilesize
3.0MB
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memory/4896-133-0x0000000000000000-mapping.dmp