vidar | 4135938f1fdf73960b444fb49177b35a46fe71893456ea9572de215b40ee41ba

Analysis

max time kernel
78s
max time network
137s
platform
windows7_x64
resource
win7-20220414-en
submitted
08-07-2022 06:28

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General

Target

4135938f1fdf73960b444fb49177b35a46fe71893456ea9572de215b40ee41ba.exe
Size

3.6MB
MD5

6937f5f3b8539c13bada23dc2a48c588
SHA1

d074581d877f81abc2061fdb648049fe422a5458
SHA256

4135938f1fdf73960b444fb49177b35a46fe71893456ea9572de215b40ee41ba
SHA512

7c1873a603efe3e46a618ff01c8d1a5182655bfcb2399f0bf97ac2f07890a790695a9fe3356479058e835c178629e9abc74b5c58c3be480a853af64af4374531

Score

10^/10

vidar 231 discovery spyware stealer suricata

Malware Config

Extracted

Family

vidar

Version

10.7

Botnet

231

http://mooreny.top/

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/1880-66-0x0000000000400000-0x0000000005310000-memory.dmp	family_vidar
behavioral1/memory/1880-70-0x0000000000400000-0x0000000005310000-memory.dmp	family_vidar

Executes dropped EXE 2 IoCs

Processes:

busshost.exeYTLoader.exe

pid process

1880 busshost.exe
628 YTLoader.exe

pid	process
1880	busshost.exe
628	YTLoader.exe

Loads dropped DLL 8 IoCs

Processes:

4135938f1fdf73960b444fb49177b35a46fe71893456ea9572de215b40ee41ba.exeWerFault.exe

pid	process
1768	4135938f1fdf73960b444fb49177b35a46fe71893456ea9572de215b40ee41ba.exe
1768	4135938f1fdf73960b444fb49177b35a46fe71893456ea9572de215b40ee41ba.exe
1768	4135938f1fdf73960b444fb49177b35a46fe71893456ea9572de215b40ee41ba.exe
1252	WerFault.exe
1252	WerFault.exe
1252	WerFault.exe
1252	WerFault.exe
1252	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

8 ip-api.com

flow	ioc
8	ip-api.com

Drops file in Program Files directory 4 IoCs

Processes:

4135938f1fdf73960b444fb49177b35a46fe71893456ea9572de215b40ee41ba.exe

description	ioc	process
File created	C:\Program Files (x86)\LetsSee!\Uninstall.ini	4135938f1fdf73960b444fb49177b35a46fe71893456ea9572de215b40ee41ba.exe
File opened for modification	C:\Program Files (x86)\LetsSee!\YTLoader.exe	4135938f1fdf73960b444fb49177b35a46fe71893456ea9572de215b40ee41ba.exe
File opened for modification	C:\Program Files (x86)\LetsSee!\busshost.exe	4135938f1fdf73960b444fb49177b35a46fe71893456ea9572de215b40ee41ba.exe
File opened for modification	C:\Program Files (x86)\LetsSee!\Uninstall.exe	4135938f1fdf73960b444fb49177b35a46fe71893456ea9572de215b40ee41ba.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

1252 628 WerFault.exe YTLoader.exe

pid	pid_target	process	target process
1252	628	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 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

Query Registry

T1012

System Information Discovery

T1082

Processes:

YTLoader.exe

description	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 4 IoCs

Processes:

busshost.exe

pid process

1880 busshost.exe
1880 busshost.exe
1880 busshost.exe
1880 busshost.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

YTLoader.exe

description pid process

Token: SeDebugPrivilege 628 YTLoader.exe

pid	process
1880	busshost.exe
1880	busshost.exe
1880	busshost.exe
1880	busshost.exe

description	pid	process
Token: SeDebugPrivilege	628	YTLoader.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

4135938f1fdf73960b444fb49177b35a46fe71893456ea9572de215b40ee41ba.exeYTLoader.exe

description	pid	process	target process
PID 1768 wrote to memory of 1880	1768	4135938f1fdf73960b444fb49177b35a46fe71893456ea9572de215b40ee41ba.exe	busshost.exe
PID 1768 wrote to memory of 1880	1768	4135938f1fdf73960b444fb49177b35a46fe71893456ea9572de215b40ee41ba.exe	busshost.exe
PID 1768 wrote to memory of 1880	1768	4135938f1fdf73960b444fb49177b35a46fe71893456ea9572de215b40ee41ba.exe	busshost.exe
PID 1768 wrote to memory of 1880	1768	4135938f1fdf73960b444fb49177b35a46fe71893456ea9572de215b40ee41ba.exe	busshost.exe
PID 1768 wrote to memory of 628	1768	4135938f1fdf73960b444fb49177b35a46fe71893456ea9572de215b40ee41ba.exe	YTLoader.exe
PID 1768 wrote to memory of 628	1768	4135938f1fdf73960b444fb49177b35a46fe71893456ea9572de215b40ee41ba.exe	YTLoader.exe
PID 1768 wrote to memory of 628	1768	4135938f1fdf73960b444fb49177b35a46fe71893456ea9572de215b40ee41ba.exe	YTLoader.exe
PID 1768 wrote to memory of 628	1768	4135938f1fdf73960b444fb49177b35a46fe71893456ea9572de215b40ee41ba.exe	YTLoader.exe
PID 628 wrote to memory of 1252	628	YTLoader.exe	WerFault.exe
PID 628 wrote to memory of 1252	628	YTLoader.exe	WerFault.exe
PID 628 wrote to memory of 1252	628	YTLoader.exe	WerFault.exe
PID 628 wrote to memory of 1252	628	YTLoader.exe	WerFault.exe

C:\Users\Admin\AppData\Local\Temp\4135938f1fdf73960b444fb49177b35a46fe71893456ea9572de215b40ee41ba.exe
"C:\Users\Admin\AppData\Local\Temp\4135938f1fdf73960b444fb49177b35a46fe71893456ea9572de215b40ee41ba.exe"
1⤵
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:1768

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:1880

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:628

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 628 -s 1060
3⤵
- Loads dropped DLL
- Program crash
PID:1252

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

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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
697KB

MD5
288bfe0c07b28bcbbc0674a2f439c1e8

SHA1
b76e30c73cc16061d639aaaf478744e84f2ea307

SHA256
cfd9e6c78b68cc240d305a36fd67e9e81ed7acb1f3ea0b110c01f9fad9204569

SHA512
61d6cea300d0c082907779def07763a98fbdd24374b2d8a9045dc2bfb8f67daee2e769c4efcb695357d8e1d439a75eaacfdce51fb8637fe9f5e8053ddad2827c

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
697KB

MD5
288bfe0c07b28bcbbc0674a2f439c1e8

SHA1
b76e30c73cc16061d639aaaf478744e84f2ea307

SHA256
cfd9e6c78b68cc240d305a36fd67e9e81ed7acb1f3ea0b110c01f9fad9204569

SHA512
61d6cea300d0c082907779def07763a98fbdd24374b2d8a9045dc2bfb8f67daee2e769c4efcb695357d8e1d439a75eaacfdce51fb8637fe9f5e8053ddad2827c

Download Submit
\Program Files (x86)\LetsSee!\busshost.exe
Filesize
697KB

MD5
288bfe0c07b28bcbbc0674a2f439c1e8

SHA1
b76e30c73cc16061d639aaaf478744e84f2ea307

SHA256
cfd9e6c78b68cc240d305a36fd67e9e81ed7acb1f3ea0b110c01f9fad9204569

SHA512
61d6cea300d0c082907779def07763a98fbdd24374b2d8a9045dc2bfb8f67daee2e769c4efcb695357d8e1d439a75eaacfdce51fb8637fe9f5e8053ddad2827c

Download Submit
memory/628-73-0x0000000000640000-0x0000000000650000-memory.dmp

Filesize
64KB

Download
memory/628-79-0x0000000000AE0000-0x0000000000AE8000-memory.dmp

Filesize
32KB

Download
memory/628-69-0x00000000004A0000-0x00000000004AA000-memory.dmp

Filesize
40KB

Download
memory/628-60-0x0000000000000000-mapping.dmp

Download
memory/628-72-0x0000000005200000-0x000000000565A000-memory.dmp

Filesize
4.4MB

Download
memory/628-67-0x0000000000E60000-0x0000000001168000-memory.dmp

Filesize
3.0MB

Download
memory/628-74-0x0000000000690000-0x000000000069A000-memory.dmp

Filesize
40KB

Download
memory/628-75-0x00000000009D0000-0x00000000009DA000-memory.dmp

Filesize
40KB

Download
memory/628-76-0x00000000009F0000-0x00000000009FA000-memory.dmp

Filesize
40KB

Download
memory/628-77-0x0000000000A40000-0x0000000000A48000-memory.dmp

Filesize
32KB

Download
memory/628-78-0x0000000000A90000-0x0000000000A9E000-memory.dmp

Filesize
56KB

Download
memory/628-84-0x0000000004570000-0x0000000004578000-memory.dmp

Filesize
32KB

Download
memory/628-80-0x0000000000AF0000-0x0000000000AF8000-memory.dmp

Filesize
32KB

Download
memory/628-81-0x0000000000B00000-0x0000000000B08000-memory.dmp

Filesize
32KB

Download
memory/628-82-0x0000000000C50000-0x0000000000C58000-memory.dmp

Filesize
32KB

Download
memory/628-83-0x0000000000E50000-0x0000000000E58000-memory.dmp

Filesize
32KB

Download
memory/1252-85-0x0000000000000000-mapping.dmp

Download
memory/1768-54-0x0000000075C01000-0x0000000075C03000-memory.dmp

Filesize
8KB

Download
memory/1880-68-0x0000000005570000-0x0000000005670000-memory.dmp

Filesize
1024KB

Download
memory/1880-66-0x0000000000400000-0x0000000005310000-memory.dmp

Filesize
79.1MB

Download
memory/1880-65-0x0000000005570000-0x0000000005670000-memory.dmp

Filesize
1024KB

Download
memory/1880-70-0x0000000000400000-0x0000000005310000-memory.dmp

Filesize
79.1MB

Download
memory/1880-57-0x0000000000000000-mapping.dmp

Download