Analysis
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max time kernel
108s -
max time network
155s -
platform
windows10-2004_x64 -
resource
win10v2004-20220414-en -
submitted
30-05-2022 14:24
Static task
static1
Behavioral task
behavioral1
Sample
0ab9b6dd58a54d3fbea62b35234ded2df36b335a86f9ad6fa29b9ae9250eb3ec.exe
Resource
win7-20220414-en
General
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Target
0ab9b6dd58a54d3fbea62b35234ded2df36b335a86f9ad6fa29b9ae9250eb3ec.exe
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Size
3.6MB
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MD5
e7394690995419522d7a587a95f6d6ee
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SHA1
5c7d416dc243b849f5cd129ee0a9bf95e2536902
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SHA256
0ab9b6dd58a54d3fbea62b35234ded2df36b335a86f9ad6fa29b9ae9250eb3ec
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SHA512
fe7536af694de5e4043f9bb087cfb7344d8bebf81cc21faef4b9877ef99426ff15da54fe320bb1c6fb8ca5450a5335429a1eba635afac8415563ea1ea66ca5c8
Malware Config
Extracted
vidar
9.5
231
http://bestpolandhotels.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/1648-147-0x0000000000400000-0x00000000009BB000-memory.dmp family_vidar behavioral2/memory/1648-149-0x0000000000400000-0x00000000009BB000-memory.dmp family_vidar -
Executes dropped EXE 2 IoCs
Processes:
busshost.exeYTLoader.exepid process 1648 busshost.exe 1900 YTLoader.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
0ab9b6dd58a54d3fbea62b35234ded2df36b335a86f9ad6fa29b9ae9250eb3ec.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Control Panel\International\Geo\Nation 0ab9b6dd58a54d3fbea62b35234ded2df36b335a86f9ad6fa29b9ae9250eb3ec.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 5 ip-api.com -
Drops file in Program Files directory 4 IoCs
Processes:
0ab9b6dd58a54d3fbea62b35234ded2df36b335a86f9ad6fa29b9ae9250eb3ec.exedescription ioc process File opened for modification C:\Program Files (x86)\LetsSee!\YTLoader.exe 0ab9b6dd58a54d3fbea62b35234ded2df36b335a86f9ad6fa29b9ae9250eb3ec.exe File opened for modification C:\Program Files (x86)\LetsSee!\busshost.exe 0ab9b6dd58a54d3fbea62b35234ded2df36b335a86f9ad6fa29b9ae9250eb3ec.exe File opened for modification C:\Program Files (x86)\LetsSee!\Uninstall.exe 0ab9b6dd58a54d3fbea62b35234ded2df36b335a86f9ad6fa29b9ae9250eb3ec.exe File created C:\Program Files (x86)\LetsSee!\Uninstall.ini 0ab9b6dd58a54d3fbea62b35234ded2df36b335a86f9ad6fa29b9ae9250eb3ec.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 4344 1900 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 1648 busshost.exe 1648 busshost.exe 1648 busshost.exe 1648 busshost.exe 1648 busshost.exe 1648 busshost.exe 1648 busshost.exe 1648 busshost.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
YTLoader.exedescription pid process Token: SeDebugPrivilege 1900 YTLoader.exe -
Suspicious use of WriteProcessMemory 6 IoCs
Processes:
0ab9b6dd58a54d3fbea62b35234ded2df36b335a86f9ad6fa29b9ae9250eb3ec.exedescription pid process target process PID 2832 wrote to memory of 1648 2832 0ab9b6dd58a54d3fbea62b35234ded2df36b335a86f9ad6fa29b9ae9250eb3ec.exe busshost.exe PID 2832 wrote to memory of 1648 2832 0ab9b6dd58a54d3fbea62b35234ded2df36b335a86f9ad6fa29b9ae9250eb3ec.exe busshost.exe PID 2832 wrote to memory of 1648 2832 0ab9b6dd58a54d3fbea62b35234ded2df36b335a86f9ad6fa29b9ae9250eb3ec.exe busshost.exe PID 2832 wrote to memory of 1900 2832 0ab9b6dd58a54d3fbea62b35234ded2df36b335a86f9ad6fa29b9ae9250eb3ec.exe YTLoader.exe PID 2832 wrote to memory of 1900 2832 0ab9b6dd58a54d3fbea62b35234ded2df36b335a86f9ad6fa29b9ae9250eb3ec.exe YTLoader.exe PID 2832 wrote to memory of 1900 2832 0ab9b6dd58a54d3fbea62b35234ded2df36b335a86f9ad6fa29b9ae9250eb3ec.exe YTLoader.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\0ab9b6dd58a54d3fbea62b35234ded2df36b335a86f9ad6fa29b9ae9250eb3ec.exe"C:\Users\Admin\AppData\Local\Temp\0ab9b6dd58a54d3fbea62b35234ded2df36b335a86f9ad6fa29b9ae9250eb3ec.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 1900 -s 16163⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 1900 -ip 19001⤵
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
887KB
MD53dd19a7570a264b2862d0b4a54ad8b09
SHA1011f2b5357007afe0966f531ac23ae39ab2b161f
SHA256742f13a5a9e2289b6105faf3ea24f0524887d8090cf25051b50aff51fb02d372
SHA5123f1d5cd61cfa78193c852429c891fbad733a4816e050f1394cb14e673a6113a8a28370f7617a52fe356f2e4c3b0c0ba259b261e9a6d985f962d4700b05dfab0b
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C:\Program Files (x86)\LetsSee!\busshost.exeFilesize
887KB
MD53dd19a7570a264b2862d0b4a54ad8b09
SHA1011f2b5357007afe0966f531ac23ae39ab2b161f
SHA256742f13a5a9e2289b6105faf3ea24f0524887d8090cf25051b50aff51fb02d372
SHA5123f1d5cd61cfa78193c852429c891fbad733a4816e050f1394cb14e673a6113a8a28370f7617a52fe356f2e4c3b0c0ba259b261e9a6d985f962d4700b05dfab0b
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memory/1648-146-0x00000000026A0000-0x00000000027A0000-memory.dmpFilesize
1024KB
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memory/1648-149-0x0000000000400000-0x00000000009BB000-memory.dmpFilesize
5.7MB
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memory/1648-148-0x00000000026A0000-0x00000000027A0000-memory.dmpFilesize
1024KB
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memory/1648-147-0x0000000000400000-0x00000000009BB000-memory.dmpFilesize
5.7MB
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memory/1648-130-0x0000000000000000-mapping.dmp
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memory/1900-139-0x0000000005260000-0x0000000005268000-memory.dmpFilesize
32KB
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memory/1900-140-0x0000000005280000-0x0000000005288000-memory.dmpFilesize
32KB
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memory/1900-142-0x00000000052A0000-0x00000000052A8000-memory.dmpFilesize
32KB
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memory/1900-143-0x00000000052C0000-0x00000000052C8000-memory.dmpFilesize
32KB
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memory/1900-144-0x00000000059D0000-0x00000000059D8000-memory.dmpFilesize
32KB
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memory/1900-145-0x00000000059E0000-0x00000000059E8000-memory.dmpFilesize
32KB
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memory/1900-141-0x0000000005290000-0x0000000005298000-memory.dmpFilesize
32KB
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memory/1900-138-0x0000000005250000-0x000000000525A000-memory.dmpFilesize
40KB
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memory/1900-136-0x0000000000420000-0x0000000000728000-memory.dmpFilesize
3.0MB
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memory/1900-133-0x0000000000000000-mapping.dmp