vidar | a59d62e59533961aa25c3c8b035ef568efe89f000e4e6c303e571deea3084371

Analysis

max time kernel
123s
max time network
144s
platform
windows7_x64
resource
win7-20220414-en
submitted
25-06-2022 01:44

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General

Target

a59d62e59533961aa25c3c8b035ef568efe89f000e4e6c303e571deea3084371.exe
Size

3.6MB
MD5

a8ad0e6c4cadc3ca2b95ccd00f4c7144
SHA1

cff385720a074c1f2a250e95e5c544674bc20a0d
SHA256

a59d62e59533961aa25c3c8b035ef568efe89f000e4e6c303e571deea3084371
SHA512

c0a3f7f1d69dd1bb11649d9aab1e17c7a385fc97344356cc11898d3c295cc45a918096f730e042e822a57add5bc19141380f827101ae6382ebedafd1fa0a2d3e

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 1 IoCs

stealer

Processes:

resource	yara_rule
behavioral1/memory/1836-71-0x0000000000400000-0x00000000008B6000-memory.dmp	family_vidar

Executes dropped EXE 2 IoCs

Processes:

busshost.exeYTLoader.exe

pid process

1836 busshost.exe
908 YTLoader.exe

pid	process
1836	busshost.exe
908	YTLoader.exe

Loads dropped DLL 8 IoCs

Processes:

a59d62e59533961aa25c3c8b035ef568efe89f000e4e6c303e571deea3084371.exeWerFault.exe

pid	process
1212	a59d62e59533961aa25c3c8b035ef568efe89f000e4e6c303e571deea3084371.exe
1212	a59d62e59533961aa25c3c8b035ef568efe89f000e4e6c303e571deea3084371.exe
1212	a59d62e59533961aa25c3c8b035ef568efe89f000e4e6c303e571deea3084371.exe
1636	WerFault.exe
1636	WerFault.exe
1636	WerFault.exe
1636	WerFault.exe
1636	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:

a59d62e59533961aa25c3c8b035ef568efe89f000e4e6c303e571deea3084371.exe

description	ioc	process
File opened for modification	C:\Program Files (x86)\LetsSee!\YTLoader.exe	a59d62e59533961aa25c3c8b035ef568efe89f000e4e6c303e571deea3084371.exe
File opened for modification	C:\Program Files (x86)\LetsSee!\busshost.exe	a59d62e59533961aa25c3c8b035ef568efe89f000e4e6c303e571deea3084371.exe
File opened for modification	C:\Program Files (x86)\LetsSee!\Uninstall.exe	a59d62e59533961aa25c3c8b035ef568efe89f000e4e6c303e571deea3084371.exe
File created	C:\Program Files (x86)\LetsSee!\Uninstall.ini	a59d62e59533961aa25c3c8b035ef568efe89f000e4e6c303e571deea3084371.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

1636 908 WerFault.exe YTLoader.exe

pid	pid_target	process	target process
1636	908	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:

YTLoader.exebusshost.exe

description	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

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

1836 busshost.exe
1836 busshost.exe
1836 busshost.exe
1836 busshost.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

YTLoader.exe

description pid process

Token: SeDebugPrivilege 908 YTLoader.exe

pid	process
1836	busshost.exe
1836	busshost.exe
1836	busshost.exe
1836	busshost.exe

description	pid	process
Token: SeDebugPrivilege	908	YTLoader.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

a59d62e59533961aa25c3c8b035ef568efe89f000e4e6c303e571deea3084371.exeYTLoader.exe

description	pid	process	target process
PID 1212 wrote to memory of 1836	1212	a59d62e59533961aa25c3c8b035ef568efe89f000e4e6c303e571deea3084371.exe	busshost.exe
PID 1212 wrote to memory of 1836	1212	a59d62e59533961aa25c3c8b035ef568efe89f000e4e6c303e571deea3084371.exe	busshost.exe
PID 1212 wrote to memory of 1836	1212	a59d62e59533961aa25c3c8b035ef568efe89f000e4e6c303e571deea3084371.exe	busshost.exe
PID 1212 wrote to memory of 1836	1212	a59d62e59533961aa25c3c8b035ef568efe89f000e4e6c303e571deea3084371.exe	busshost.exe
PID 1212 wrote to memory of 908	1212	a59d62e59533961aa25c3c8b035ef568efe89f000e4e6c303e571deea3084371.exe	YTLoader.exe
PID 1212 wrote to memory of 908	1212	a59d62e59533961aa25c3c8b035ef568efe89f000e4e6c303e571deea3084371.exe	YTLoader.exe
PID 1212 wrote to memory of 908	1212	a59d62e59533961aa25c3c8b035ef568efe89f000e4e6c303e571deea3084371.exe	YTLoader.exe
PID 1212 wrote to memory of 908	1212	a59d62e59533961aa25c3c8b035ef568efe89f000e4e6c303e571deea3084371.exe	YTLoader.exe
PID 908 wrote to memory of 1636	908	YTLoader.exe	WerFault.exe
PID 908 wrote to memory of 1636	908	YTLoader.exe	WerFault.exe
PID 908 wrote to memory of 1636	908	YTLoader.exe	WerFault.exe
PID 908 wrote to memory of 1636	908	YTLoader.exe	WerFault.exe

C:\Users\Admin\AppData\Local\Temp\a59d62e59533961aa25c3c8b035ef568efe89f000e4e6c303e571deea3084371.exe
"C:\Users\Admin\AppData\Local\Temp\a59d62e59533961aa25c3c8b035ef568efe89f000e4e6c303e571deea3084371.exe"
1⤵
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:1212

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:1836

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:908

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 908 -s 1164
3⤵
- Loads dropped DLL
- Program crash
PID:1636

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
663KB

MD5
65787b7381c5404fc99b996e56d1be99

SHA1
03e6d7842e14e62cf8c47d365ebf5cb29dd2d1f3

SHA256
5a308922638cffd906bf3f43452cdb10578f516589ead120d0f8152480f41755

SHA512
5d971e574a2de2953fd7e85ed643c3693937973bf3bb0628817aece5d3a14ca543fce287a479d56562dc3bd1c29b10fdc7a29c0cd6d4ed1d19670b161efb113b

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
663KB

MD5
65787b7381c5404fc99b996e56d1be99

SHA1
03e6d7842e14e62cf8c47d365ebf5cb29dd2d1f3

SHA256
5a308922638cffd906bf3f43452cdb10578f516589ead120d0f8152480f41755

SHA512
5d971e574a2de2953fd7e85ed643c3693937973bf3bb0628817aece5d3a14ca543fce287a479d56562dc3bd1c29b10fdc7a29c0cd6d4ed1d19670b161efb113b

Download Submit
\Program Files (x86)\LetsSee!\busshost.exe
Filesize
663KB

MD5
65787b7381c5404fc99b996e56d1be99

SHA1
03e6d7842e14e62cf8c47d365ebf5cb29dd2d1f3

SHA256
5a308922638cffd906bf3f43452cdb10578f516589ead120d0f8152480f41755

SHA512
5d971e574a2de2953fd7e85ed643c3693937973bf3bb0628817aece5d3a14ca543fce287a479d56562dc3bd1c29b10fdc7a29c0cd6d4ed1d19670b161efb113b

Download Submit
memory/908-73-0x0000000000A10000-0x0000000000A1A000-memory.dmp

Filesize
40KB

Download
memory/908-79-0x0000000000B80000-0x0000000000B88000-memory.dmp

Filesize
32KB

Download
memory/908-70-0x00000000005E0000-0x00000000005F0000-memory.dmp

Filesize
64KB

Download
memory/908-60-0x0000000000000000-mapping.dmp

Download
memory/908-72-0x00000000009C0000-0x00000000009CA000-memory.dmp

Filesize
40KB

Download
memory/908-63-0x0000000000F40000-0x0000000001248000-memory.dmp

Filesize
3.0MB

Download
memory/908-74-0x0000000000A30000-0x0000000000A3A000-memory.dmp

Filesize
40KB

Download
memory/908-75-0x0000000000A40000-0x0000000000A48000-memory.dmp

Filesize
32KB

Download
memory/908-76-0x0000000000A50000-0x0000000000A5E000-memory.dmp

Filesize
56KB

Download
memory/908-77-0x0000000000AE0000-0x0000000000AE8000-memory.dmp

Filesize
32KB

Download
memory/908-78-0x0000000000AF0000-0x0000000000AF8000-memory.dmp

Filesize
32KB

Download
memory/908-69-0x0000000005090000-0x00000000054EA000-memory.dmp

Filesize
4.4MB

Download
memory/908-80-0x0000000000B90000-0x0000000000B98000-memory.dmp

Filesize
32KB

Download
memory/908-81-0x0000000000BB0000-0x0000000000BB8000-memory.dmp

Filesize
32KB

Download
memory/908-82-0x0000000000BC0000-0x0000000000BC8000-memory.dmp

Filesize
32KB

Download
memory/908-64-0x0000000000470000-0x000000000047A000-memory.dmp

Filesize
40KB

Download
memory/1212-54-0x00000000755C1000-0x00000000755C3000-memory.dmp

Filesize
8KB

Download
memory/1636-84-0x0000000000000000-mapping.dmp

Download
memory/1836-68-0x0000000000220000-0x0000000000320000-memory.dmp

Filesize
1024KB

Download
memory/1836-83-0x0000000000220000-0x0000000000320000-memory.dmp

Filesize
1024KB

Download
memory/1836-71-0x0000000000400000-0x00000000008B6000-memory.dmp

Filesize
4.7MB

Download
memory/1836-57-0x0000000000000000-mapping.dmp

Download