vidar | 5c05f9a8dbb32441234866476da8c8bc1ec1622d86037cc2171e742e38ea6b25

Analysis

max time kernel
143s
max time network
147s
platform
windows7_x64
resource
win7-20220715-en
resource tags

arch:x64arch:x86image:win7-20220715-enlocale:en-usos:windows7-x64system
submitted
01-08-2022 15:54

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General

Target

5c05f9a8dbb32441234866476da8c8bc1ec1622d86037cc2171e742e38ea6b25.exe
Size

3.6MB
MD5

1700357d6d5e4bf495c60f9230bbdebe
SHA1

12b59646e8326b5b0409dc3633e3f443449bcc40
SHA256

5c05f9a8dbb32441234866476da8c8bc1ec1622d86037cc2171e742e38ea6b25
SHA512

2c688c9e6f4d4f88252a6afbd26a907dd31ac52ebc474f73c1b27b72e7bef5a02c5f8bd6a4e6605d8d89714a356efc2814882c930ba400132c321ee4cacbe023

Score

10^/10

vidar 231 discovery spyware stealer

Malware Config

Extracted

Family

vidar

Version

9.2

Botnet

231

http://wasabinails.com/

Attributes

profile_id
231

Signatures

Vidar
Vidar is an infostealer based on Arkei stealer.
stealer vidar

Vidar Stealer 2 IoCs

stealer

Processes:

resource	yara_rule
behavioral1/memory/888-70-0x0000000000400000-0x000000000051D000-memory.dmp	family_vidar
behavioral1/memory/888-90-0x0000000000400000-0x000000000051D000-memory.dmp	family_vidar

Executes dropped EXE 2 IoCs

Processes:

busshost.exeYTLoader.exe

pid process

888 busshost.exe
1700 YTLoader.exe

pid	process
888	busshost.exe
1700	YTLoader.exe

Loads dropped DLL 8 IoCs

Processes:

5c05f9a8dbb32441234866476da8c8bc1ec1622d86037cc2171e742e38ea6b25.exeWerFault.exe

pid	process
1832	5c05f9a8dbb32441234866476da8c8bc1ec1622d86037cc2171e742e38ea6b25.exe
1832	5c05f9a8dbb32441234866476da8c8bc1ec1622d86037cc2171e742e38ea6b25.exe
1832	5c05f9a8dbb32441234866476da8c8bc1ec1622d86037cc2171e742e38ea6b25.exe
1608	WerFault.exe
1608	WerFault.exe
1608	WerFault.exe
1608	WerFault.exe
1608	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:

5c05f9a8dbb32441234866476da8c8bc1ec1622d86037cc2171e742e38ea6b25.exe

description	ioc	process
File opened for modification	C:\Program Files (x86)\LetsSee!\YTLoader.exe	5c05f9a8dbb32441234866476da8c8bc1ec1622d86037cc2171e742e38ea6b25.exe
File opened for modification	C:\Program Files (x86)\LetsSee!\busshost.exe	5c05f9a8dbb32441234866476da8c8bc1ec1622d86037cc2171e742e38ea6b25.exe
File opened for modification	C:\Program Files (x86)\LetsSee!\Uninstall.exe	5c05f9a8dbb32441234866476da8c8bc1ec1622d86037cc2171e742e38ea6b25.exe
File created	C:\Program Files (x86)\LetsSee!\Uninstall.ini	5c05f9a8dbb32441234866476da8c8bc1ec1622d86037cc2171e742e38ea6b25.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

1608 1700 WerFault.exe YTLoader.exe

pid	pid_target	process	target process
1608	1700	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 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

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

Processes:

YTLoader.exe

description pid process

Token: SeDebugPrivilege 1700 YTLoader.exe

pid	process
888	busshost.exe
888	busshost.exe
888	busshost.exe
888	busshost.exe

description	pid	process
Token: SeDebugPrivilege	1700	YTLoader.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

5c05f9a8dbb32441234866476da8c8bc1ec1622d86037cc2171e742e38ea6b25.exeYTLoader.exe

description	pid	process	target process
PID 1832 wrote to memory of 888	1832	5c05f9a8dbb32441234866476da8c8bc1ec1622d86037cc2171e742e38ea6b25.exe	busshost.exe
PID 1832 wrote to memory of 888	1832	5c05f9a8dbb32441234866476da8c8bc1ec1622d86037cc2171e742e38ea6b25.exe	busshost.exe
PID 1832 wrote to memory of 888	1832	5c05f9a8dbb32441234866476da8c8bc1ec1622d86037cc2171e742e38ea6b25.exe	busshost.exe
PID 1832 wrote to memory of 888	1832	5c05f9a8dbb32441234866476da8c8bc1ec1622d86037cc2171e742e38ea6b25.exe	busshost.exe
PID 1832 wrote to memory of 1700	1832	5c05f9a8dbb32441234866476da8c8bc1ec1622d86037cc2171e742e38ea6b25.exe	YTLoader.exe
PID 1832 wrote to memory of 1700	1832	5c05f9a8dbb32441234866476da8c8bc1ec1622d86037cc2171e742e38ea6b25.exe	YTLoader.exe
PID 1832 wrote to memory of 1700	1832	5c05f9a8dbb32441234866476da8c8bc1ec1622d86037cc2171e742e38ea6b25.exe	YTLoader.exe
PID 1832 wrote to memory of 1700	1832	5c05f9a8dbb32441234866476da8c8bc1ec1622d86037cc2171e742e38ea6b25.exe	YTLoader.exe
PID 1700 wrote to memory of 1608	1700	YTLoader.exe	WerFault.exe
PID 1700 wrote to memory of 1608	1700	YTLoader.exe	WerFault.exe
PID 1700 wrote to memory of 1608	1700	YTLoader.exe	WerFault.exe
PID 1700 wrote to memory of 1608	1700	YTLoader.exe	WerFault.exe

C:\Users\Admin\AppData\Local\Temp\5c05f9a8dbb32441234866476da8c8bc1ec1622d86037cc2171e742e38ea6b25.exe
"C:\Users\Admin\AppData\Local\Temp\5c05f9a8dbb32441234866476da8c8bc1ec1622d86037cc2171e742e38ea6b25.exe"
1⤵
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:1832

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:888

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:1700

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1700 -s 1188
3⤵
- Loads dropped DLL
- Program crash
PID:1608

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
546KB

MD5
9bcd564314e5c4899e84770506ea65af

SHA1
c8491ee3bb92442c688ca0ba10bdfde04d92078f

SHA256
ace22cfa35bd571c114f026136b07dabe10b565682acb292b769525d9e155119

SHA512
872c67b0f97df58ab3341652b8758f4e70aceb402a34b79d943f7bfe528d67541a5f963132782162b197ea04a8ec37f9573300bf33d2823e63bcbd20481404f3

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
546KB

MD5
9bcd564314e5c4899e84770506ea65af

SHA1
c8491ee3bb92442c688ca0ba10bdfde04d92078f

SHA256
ace22cfa35bd571c114f026136b07dabe10b565682acb292b769525d9e155119

SHA512
872c67b0f97df58ab3341652b8758f4e70aceb402a34b79d943f7bfe528d67541a5f963132782162b197ea04a8ec37f9573300bf33d2823e63bcbd20481404f3

Download Submit
\Program Files (x86)\LetsSee!\busshost.exe
Filesize
546KB

MD5
9bcd564314e5c4899e84770506ea65af

SHA1
c8491ee3bb92442c688ca0ba10bdfde04d92078f

SHA256
ace22cfa35bd571c114f026136b07dabe10b565682acb292b769525d9e155119

SHA512
872c67b0f97df58ab3341652b8758f4e70aceb402a34b79d943f7bfe528d67541a5f963132782162b197ea04a8ec37f9573300bf33d2823e63bcbd20481404f3

Download Submit
memory/888-57-0x0000000000000000-mapping.dmp

Download
memory/888-68-0x0000000000520000-0x0000000000620000-memory.dmp

Filesize
1024KB

Download
memory/888-70-0x0000000000400000-0x000000000051D000-memory.dmp

Filesize
1.1MB

Download
memory/888-89-0x0000000000520000-0x0000000000620000-memory.dmp

Filesize
1024KB

Download
memory/888-90-0x0000000000400000-0x000000000051D000-memory.dmp

Filesize
1.1MB

Download
memory/1608-83-0x0000000000000000-mapping.dmp

Download
memory/1700-72-0x00000000004E0000-0x00000000004EA000-memory.dmp

Filesize
40KB

Download
memory/1700-74-0x0000000000510000-0x000000000051A000-memory.dmp

Filesize
40KB

Download
memory/1700-76-0x0000000000540000-0x000000000054E000-memory.dmp

Filesize
56KB

Download
memory/1700-77-0x00000000021A0000-0x00000000021A8000-memory.dmp

Filesize
32KB

Download
memory/1700-78-0x00000000021B0000-0x00000000021B8000-memory.dmp

Filesize
32KB

Download
memory/1700-79-0x00000000021C0000-0x00000000021C8000-memory.dmp

Filesize
32KB

Download
memory/1700-80-0x0000000002280000-0x0000000002288000-memory.dmp

Filesize
32KB

Download
memory/1700-81-0x00000000022E0000-0x00000000022E8000-memory.dmp

Filesize
32KB

Download
memory/1700-82-0x00000000022F0000-0x00000000022F8000-memory.dmp

Filesize
32KB

Download
memory/1700-75-0x0000000000530000-0x0000000000538000-memory.dmp

Filesize
32KB

Download
memory/1700-60-0x0000000000000000-mapping.dmp

Download
memory/1700-73-0x00000000004F0000-0x00000000004FA000-memory.dmp

Filesize
40KB

Download
memory/1700-71-0x00000000004D0000-0x00000000004E0000-memory.dmp

Filesize
64KB

Download
memory/1700-69-0x00000000051F0000-0x000000000564A000-memory.dmp

Filesize
4.4MB

Download
memory/1700-66-0x0000000000450000-0x000000000045A000-memory.dmp

Filesize
40KB

Download
memory/1700-65-0x0000000000820000-0x0000000000B28000-memory.dmp

Filesize
3.0MB

Download
memory/1832-54-0x0000000075741000-0x0000000075743000-memory.dmp

Filesize
8KB

Download