vidar | 08858e8984291d023391d7ae86261273f35bfde102368459b9f0c99dddf688a8

Analysis

max time kernel
143s
max time network
166s
platform
windows7_x64
resource
win7-20220414-en
submitted
30-05-2022 21:39

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General

Target

08858e8984291d023391d7ae86261273f35bfde102368459b9f0c99dddf688a8.exe
Size

3.6MB
MD5

e940b879305a2ecdf3a08dd1fbde6c16
SHA1

927518df1e8d041e0f1390d9819cb0593e108dd8
SHA256

08858e8984291d023391d7ae86261273f35bfde102368459b9f0c99dddf688a8
SHA512

b0d6241b3b12cf39578a42db915600ecac0de199061693043bde046633a221c554ff6a26bb20767520f9fbfdbf11c23af01c31b45ba50d635006b66d83de451f

Score

10^/10

vidar 231 discovery spyware stealer suricata

Malware Config

Extracted

Family

vidar

Version

9.7

Botnet

231

http://bestbtcchange.com/

Attributes

profile_id
231

Signatures

Vidar
Vidar is an infostealer based on Arkei stealer.
stealer vidar
suricata: ET MALWARE Vidar/Arkei/Megumin/Oski Stealer HTTP POST Pattern
suricata: ET MALWARE Vidar/Arkei/Megumin/Oski Stealer HTTP POST Pattern
suricata

Vidar Stealer 2 IoCs

stealer

Processes:

resource	yara_rule
behavioral1/memory/1928-90-0x0000000000400000-0x0000000000CA3000-memory.dmp	family_vidar
behavioral1/memory/1928-97-0x0000000000400000-0x0000000000CA3000-memory.dmp	family_vidar

Executes dropped EXE 2 IoCs

Processes:

busshost.exeYTLoader.exe

pid process

1928 busshost.exe
1180 YTLoader.exe

pid	process
1928	busshost.exe
1180	YTLoader.exe

Loads dropped DLL 8 IoCs

Processes:

08858e8984291d023391d7ae86261273f35bfde102368459b9f0c99dddf688a8.exeWerFault.exe

pid	process
760	08858e8984291d023391d7ae86261273f35bfde102368459b9f0c99dddf688a8.exe
760	08858e8984291d023391d7ae86261273f35bfde102368459b9f0c99dddf688a8.exe
760	08858e8984291d023391d7ae86261273f35bfde102368459b9f0c99dddf688a8.exe
1868	WerFault.exe
1868	WerFault.exe
1868	WerFault.exe
1868	WerFault.exe
1868	WerFault.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.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081
Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081
Accesses 2FA software files, possible credential harvesting 2 TTPs
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012
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

9 ip-api.com

flow	ioc
9	ip-api.com

Drops file in Program Files directory 4 IoCs

Processes:

08858e8984291d023391d7ae86261273f35bfde102368459b9f0c99dddf688a8.exe

description	ioc	process
File opened for modification	C:\Program Files (x86)\LetsSee!\busshost.exe	08858e8984291d023391d7ae86261273f35bfde102368459b9f0c99dddf688a8.exe
File opened for modification	C:\Program Files (x86)\LetsSee!\Uninstall.exe	08858e8984291d023391d7ae86261273f35bfde102368459b9f0c99dddf688a8.exe
File created	C:\Program Files (x86)\LetsSee!\Uninstall.ini	08858e8984291d023391d7ae86261273f35bfde102368459b9f0c99dddf688a8.exe
File opened for modification	C:\Program Files (x86)\LetsSee!\YTLoader.exe	08858e8984291d023391d7ae86261273f35bfde102368459b9f0c99dddf688a8.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

1868 1180 WerFault.exe YTLoader.exe

pid	pid_target	process	target process
1868	1180	WerFault.exe	YTLoader.exe

Checks processor information in registry 2 TTPs 4 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

busshost.exeYTLoader.exe

description	ioc	process
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
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	busshost.exe

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

T1012

System Information Discovery

T1082

Processes:

YTLoader.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemManufacturer	YTLoader.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemProductName	YTLoader.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS	YTLoader.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

busshost.exe

pid process

1928 busshost.exe
1928 busshost.exe
1928 busshost.exe
1928 busshost.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

YTLoader.exe

description pid process

Token: SeDebugPrivilege 1180 YTLoader.exe

pid	process
1928	busshost.exe
1928	busshost.exe
1928	busshost.exe
1928	busshost.exe

description	pid	process
Token: SeDebugPrivilege	1180	YTLoader.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

08858e8984291d023391d7ae86261273f35bfde102368459b9f0c99dddf688a8.exeYTLoader.exe

description	pid	process	target process
PID 760 wrote to memory of 1928	760	08858e8984291d023391d7ae86261273f35bfde102368459b9f0c99dddf688a8.exe	busshost.exe
PID 760 wrote to memory of 1928	760	08858e8984291d023391d7ae86261273f35bfde102368459b9f0c99dddf688a8.exe	busshost.exe
PID 760 wrote to memory of 1928	760	08858e8984291d023391d7ae86261273f35bfde102368459b9f0c99dddf688a8.exe	busshost.exe
PID 760 wrote to memory of 1928	760	08858e8984291d023391d7ae86261273f35bfde102368459b9f0c99dddf688a8.exe	busshost.exe
PID 760 wrote to memory of 1180	760	08858e8984291d023391d7ae86261273f35bfde102368459b9f0c99dddf688a8.exe	YTLoader.exe
PID 760 wrote to memory of 1180	760	08858e8984291d023391d7ae86261273f35bfde102368459b9f0c99dddf688a8.exe	YTLoader.exe
PID 760 wrote to memory of 1180	760	08858e8984291d023391d7ae86261273f35bfde102368459b9f0c99dddf688a8.exe	YTLoader.exe
PID 760 wrote to memory of 1180	760	08858e8984291d023391d7ae86261273f35bfde102368459b9f0c99dddf688a8.exe	YTLoader.exe
PID 1180 wrote to memory of 1868	1180	YTLoader.exe	WerFault.exe
PID 1180 wrote to memory of 1868	1180	YTLoader.exe	WerFault.exe
PID 1180 wrote to memory of 1868	1180	YTLoader.exe	WerFault.exe
PID 1180 wrote to memory of 1868	1180	YTLoader.exe	WerFault.exe

C:\Users\Admin\AppData\Local\Temp\08858e8984291d023391d7ae86261273f35bfde102368459b9f0c99dddf688a8.exe
"C:\Users\Admin\AppData\Local\Temp\08858e8984291d023391d7ae86261273f35bfde102368459b9f0c99dddf688a8.exe"
1⤵
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:760

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
PID:1928

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
- Suspicious use of WriteProcessMemory
PID:1180

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1180 -s 1168
3⤵
- Loads dropped DLL
- Program crash
PID:1868

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

T1081

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Program Files (x86)\LetsSee!\YTLoader.exe
Filesize
3.0MB

MD5
adc9db2753fa3daa6a8156254ba2a5f1

SHA1
50ff27e2e1c4acc35768b93b73c03f7630027f04

SHA256
f8cc40321301d39f03eaa48d42cbbb2e953b694dc13ccf9d986032c621223fde

SHA512
5f7fca8da622035f3a83e562d727ccdd842d623ec376f93c75c3218bddd970c34a9efc66a33cfd6e52a398fa2ed090b890d05aecef53f65a22917d50d31a1195

Download Submit
C:\Program Files (x86)\LetsSee!\YTLoader.exe
Filesize
3.0MB

MD5
adc9db2753fa3daa6a8156254ba2a5f1

SHA1
50ff27e2e1c4acc35768b93b73c03f7630027f04

SHA256
f8cc40321301d39f03eaa48d42cbbb2e953b694dc13ccf9d986032c621223fde

SHA512
5f7fca8da622035f3a83e562d727ccdd842d623ec376f93c75c3218bddd970c34a9efc66a33cfd6e52a398fa2ed090b890d05aecef53f65a22917d50d31a1195

Download Submit
C:\Program Files (x86)\LetsSee!\busshost.exe
Filesize
627KB

MD5
8073f1d1a37c1b1e45e2529c08cfe43b

SHA1
2b4c4f2afa5110f56c4501650dd796ab90e04e99

SHA256
c878566de0610cb02d485f8d1aba2a4a1afe8ea083446b1509c2a551625dd0f6

SHA512
375d9e1afe03d56e1389a7c2674acd7ddd02bd2b54d6371c5771dad7297efe743bed0e71b9db99b454cb477f28fef4b61a4429d2e9a3df5efb7ff47de4990273

Download Submit
\Program Files (x86)\LetsSee!\YTLoader.exe
Filesize
3.0MB

MD5
adc9db2753fa3daa6a8156254ba2a5f1

SHA1
50ff27e2e1c4acc35768b93b73c03f7630027f04

SHA256
f8cc40321301d39f03eaa48d42cbbb2e953b694dc13ccf9d986032c621223fde

SHA512
5f7fca8da622035f3a83e562d727ccdd842d623ec376f93c75c3218bddd970c34a9efc66a33cfd6e52a398fa2ed090b890d05aecef53f65a22917d50d31a1195

Download Submit
\Program Files (x86)\LetsSee!\YTLoader.exe
Filesize
3.0MB

MD5
adc9db2753fa3daa6a8156254ba2a5f1

SHA1
50ff27e2e1c4acc35768b93b73c03f7630027f04

SHA256
f8cc40321301d39f03eaa48d42cbbb2e953b694dc13ccf9d986032c621223fde

SHA512
5f7fca8da622035f3a83e562d727ccdd842d623ec376f93c75c3218bddd970c34a9efc66a33cfd6e52a398fa2ed090b890d05aecef53f65a22917d50d31a1195

Download Submit
\Program Files (x86)\LetsSee!\YTLoader.exe
Filesize
3.0MB

MD5
adc9db2753fa3daa6a8156254ba2a5f1

SHA1
50ff27e2e1c4acc35768b93b73c03f7630027f04

SHA256
f8cc40321301d39f03eaa48d42cbbb2e953b694dc13ccf9d986032c621223fde

SHA512
5f7fca8da622035f3a83e562d727ccdd842d623ec376f93c75c3218bddd970c34a9efc66a33cfd6e52a398fa2ed090b890d05aecef53f65a22917d50d31a1195

Download Submit
\Program Files (x86)\LetsSee!\YTLoader.exe
Filesize
3.0MB

MD5
adc9db2753fa3daa6a8156254ba2a5f1

SHA1
50ff27e2e1c4acc35768b93b73c03f7630027f04

SHA256
f8cc40321301d39f03eaa48d42cbbb2e953b694dc13ccf9d986032c621223fde

SHA512
5f7fca8da622035f3a83e562d727ccdd842d623ec376f93c75c3218bddd970c34a9efc66a33cfd6e52a398fa2ed090b890d05aecef53f65a22917d50d31a1195

Download Submit
\Program Files (x86)\LetsSee!\YTLoader.exe
Filesize
3.0MB

MD5
adc9db2753fa3daa6a8156254ba2a5f1

SHA1
50ff27e2e1c4acc35768b93b73c03f7630027f04

SHA256
f8cc40321301d39f03eaa48d42cbbb2e953b694dc13ccf9d986032c621223fde

SHA512
5f7fca8da622035f3a83e562d727ccdd842d623ec376f93c75c3218bddd970c34a9efc66a33cfd6e52a398fa2ed090b890d05aecef53f65a22917d50d31a1195

Download Submit
\Program Files (x86)\LetsSee!\YTLoader.exe
Filesize
3.0MB

MD5
adc9db2753fa3daa6a8156254ba2a5f1

SHA1
50ff27e2e1c4acc35768b93b73c03f7630027f04

SHA256
f8cc40321301d39f03eaa48d42cbbb2e953b694dc13ccf9d986032c621223fde

SHA512
5f7fca8da622035f3a83e562d727ccdd842d623ec376f93c75c3218bddd970c34a9efc66a33cfd6e52a398fa2ed090b890d05aecef53f65a22917d50d31a1195

Download Submit
\Program Files (x86)\LetsSee!\busshost.exe
Filesize
627KB

MD5
8073f1d1a37c1b1e45e2529c08cfe43b

SHA1
2b4c4f2afa5110f56c4501650dd796ab90e04e99

SHA256
c878566de0610cb02d485f8d1aba2a4a1afe8ea083446b1509c2a551625dd0f6

SHA512
375d9e1afe03d56e1389a7c2674acd7ddd02bd2b54d6371c5771dad7297efe743bed0e71b9db99b454cb477f28fef4b61a4429d2e9a3df5efb7ff47de4990273

Download Submit
\Program Files (x86)\LetsSee!\busshost.exe
Filesize
627KB

MD5
8073f1d1a37c1b1e45e2529c08cfe43b

SHA1
2b4c4f2afa5110f56c4501650dd796ab90e04e99

SHA256
c878566de0610cb02d485f8d1aba2a4a1afe8ea083446b1509c2a551625dd0f6

SHA512
375d9e1afe03d56e1389a7c2674acd7ddd02bd2b54d6371c5771dad7297efe743bed0e71b9db99b454cb477f28fef4b61a4429d2e9a3df5efb7ff47de4990273

Download Submit
memory/760-54-0x0000000076851000-0x0000000076853000-memory.dmp

Filesize
8KB

Download
memory/1180-81-0x0000000072F60000-0x00000000742EF000-memory.dmp

Filesize
19.6MB

Download
memory/1180-86-0x000000006FEB0000-0x00000000711B7000-memory.dmp

Filesize
19.0MB

Download
memory/1180-71-0x00000000007B0000-0x00000000007BA000-memory.dmp

Filesize
40KB

Download
memory/1180-72-0x0000000000810000-0x000000000081A000-memory.dmp

Filesize
40KB

Download
memory/1180-73-0x0000000000820000-0x0000000000828000-memory.dmp

Filesize
32KB

Download
memory/1180-74-0x0000000000830000-0x000000000083E000-memory.dmp

Filesize
56KB

Download
memory/1180-75-0x0000000000840000-0x0000000000848000-memory.dmp

Filesize
32KB

Download
memory/1180-76-0x00000000008D0000-0x00000000008D8000-memory.dmp

Filesize
32KB

Download
memory/1180-77-0x00000000008E0000-0x00000000008E8000-memory.dmp

Filesize
32KB

Download
memory/1180-78-0x0000000000930000-0x0000000000938000-memory.dmp

Filesize
32KB

Download
memory/1180-79-0x0000000000950000-0x0000000000958000-memory.dmp

Filesize
32KB

Download
memory/1180-80-0x0000000000960000-0x0000000000968000-memory.dmp

Filesize
32KB

Download
memory/1180-67-0x0000000000690000-0x00000000006A0000-memory.dmp

Filesize
64KB

Download
memory/1180-82-0x0000000072550000-0x0000000072F60000-memory.dmp

Filesize
10.1MB

Download
memory/1180-83-0x0000000071D70000-0x0000000072550000-memory.dmp

Filesize
7.9MB

Download
memory/1180-84-0x00000000746C0000-0x0000000074AB3000-memory.dmp

Filesize
3.9MB

Download
memory/1180-85-0x00000000711C0000-0x0000000071D6E000-memory.dmp

Filesize
11.7MB

Download
memory/1180-70-0x00000000007A0000-0x00000000007AA000-memory.dmp

Filesize
40KB

Download
memory/1180-87-0x000000006FCB0000-0x000000006FEA4000-memory.dmp

Filesize
2.0MB

Download
memory/1180-88-0x000000006FAE0000-0x000000006FBDC000-memory.dmp

Filesize
1008KB

Download
memory/1180-89-0x000000006F3A0000-0x000000006FADE000-memory.dmp

Filesize
7.2MB

Download
memory/1180-60-0x0000000000000000-mapping.dmp

Download
memory/1180-63-0x0000000000140000-0x0000000000448000-memory.dmp

Filesize
3.0MB

Download
memory/1180-92-0x0000000072F60000-0x00000000742EF000-memory.dmp

Filesize
19.6MB

Download
memory/1180-93-0x0000000072550000-0x0000000072F60000-memory.dmp

Filesize
10.1MB

Download
memory/1180-94-0x00000000746C0000-0x0000000074AB3000-memory.dmp

Filesize
3.9MB

Download
memory/1180-95-0x000000006FEB0000-0x00000000711B7000-memory.dmp

Filesize
19.0MB

Download
memory/1180-96-0x000000006FCB0000-0x000000006FEA4000-memory.dmp

Filesize
2.0MB

Download
memory/1180-64-0x0000000000650000-0x000000000065A000-memory.dmp

Filesize
40KB

Download
memory/1180-66-0x00000000051C0000-0x000000000561A000-memory.dmp

Filesize
4.4MB

Download
memory/1868-98-0x0000000000000000-mapping.dmp

Download
memory/1928-99-0x0000000002510000-0x0000000002610000-memory.dmp

Filesize
1024KB

Download
memory/1928-97-0x0000000000400000-0x0000000000CA3000-memory.dmp

Filesize
8.6MB

Download
memory/1928-91-0x0000000002510000-0x0000000002610000-memory.dmp

Filesize
1024KB

Download
memory/1928-90-0x0000000000400000-0x0000000000CA3000-memory.dmp

Filesize
8.6MB

Download
memory/1928-57-0x0000000000000000-mapping.dmp

Download