vidar | ab84f8131f507e2ced9d2e3d7826e5b90ce9c939a44042f8adea37bf4734f996

Analysis

max time kernel
136s
max time network
158s
platform
windows7_x64
resource
win7v20210408
submitted
16-05-2021 03:02

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

ab84f8131f507e2ced9d2e3d7826e5b90ce9c939a44042f8adea37bf4734f996.exe
Size

3.6MB
MD5

3906b7977437ba0d985277e8e6354e83
SHA1

7e26f58ad5d912f7b548840cce75ece0d7616311
SHA256

ab84f8131f507e2ced9d2e3d7826e5b90ce9c939a44042f8adea37bf4734f996
SHA512

8bf3a5222881f1fef271e8240f1a53de01f694e7656b9857955aadae425ab6272a5952f0e98119fccab8df142830b2afa18acbc212ced00fab089bc55e516875

Score

10^/10

vidar 231 discovery spyware stealer

Malware Config

Extracted

Family

vidar

Version

9.3

Botnet

231

https://photoshopsarte.com

Attributes

profile_id
231

Signatures

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

Vidar Stealer 1 IoCs

stealer

Processes:

resource	yara_rule
behavioral1/memory/1936-72-0x0000000000400000-0x0000000000591000-memory.dmp	family_vidar

Executes dropped EXE 2 IoCs

Processes:

busshost.exeYTLoader.exe

pid process

1936 busshost.exe
1756 YTLoader.exe

pid	process
1936	busshost.exe
1756	YTLoader.exe

Loads dropped DLL 8 IoCs

Processes:

ab84f8131f507e2ced9d2e3d7826e5b90ce9c939a44042f8adea37bf4734f996.exeWerFault.exe

pid	process
1976	ab84f8131f507e2ced9d2e3d7826e5b90ce9c939a44042f8adea37bf4734f996.exe
1976	ab84f8131f507e2ced9d2e3d7826e5b90ce9c939a44042f8adea37bf4734f996.exe
1976	ab84f8131f507e2ced9d2e3d7826e5b90ce9c939a44042f8adea37bf4734f996.exe
1804	WerFault.exe
1804	WerFault.exe
1804	WerFault.exe
1804	WerFault.exe
1804	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

16 ip-api.com

flow	ioc
16	ip-api.com

Drops file in Program Files directory 4 IoCs

Processes:

ab84f8131f507e2ced9d2e3d7826e5b90ce9c939a44042f8adea37bf4734f996.exe

description	ioc	process
File opened for modification	C:\Program Files (x86)\LetsSee!\busshost.exe	ab84f8131f507e2ced9d2e3d7826e5b90ce9c939a44042f8adea37bf4734f996.exe
File opened for modification	C:\Program Files (x86)\LetsSee!\Uninstall.exe	ab84f8131f507e2ced9d2e3d7826e5b90ce9c939a44042f8adea37bf4734f996.exe
File created	C:\Program Files (x86)\LetsSee!\Uninstall.ini	ab84f8131f507e2ced9d2e3d7826e5b90ce9c939a44042f8adea37bf4734f996.exe
File opened for modification	C:\Program Files (x86)\LetsSee!\YTLoader.exe	ab84f8131f507e2ced9d2e3d7826e5b90ce9c939a44042f8adea37bf4734f996.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

1804 1756 WerFault.exe YTLoader.exe

pid	pid_target	process	target process
1804	1756	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 9 IoCs

Processes:

WerFault.exebusshost.exe

pid	process
1804	WerFault.exe
1804	WerFault.exe
1804	WerFault.exe
1804	WerFault.exe
1804	WerFault.exe
1936	busshost.exe
1936	busshost.exe
1936	busshost.exe
1936	busshost.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

WerFault.exe

pid process

1804 WerFault.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

YTLoader.exeWerFault.exe

description pid process

Token: SeDebugPrivilege 1756 YTLoader.exe
Token: SeDebugPrivilege 1804 WerFault.exe

description	pid	process
Token: SeDebugPrivilege	1756	YTLoader.exe
Token: SeDebugPrivilege	1804	WerFault.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

ab84f8131f507e2ced9d2e3d7826e5b90ce9c939a44042f8adea37bf4734f996.exeYTLoader.exe

description	pid	process	target process
PID 1976 wrote to memory of 1936	1976	ab84f8131f507e2ced9d2e3d7826e5b90ce9c939a44042f8adea37bf4734f996.exe	busshost.exe
PID 1976 wrote to memory of 1936	1976	ab84f8131f507e2ced9d2e3d7826e5b90ce9c939a44042f8adea37bf4734f996.exe	busshost.exe
PID 1976 wrote to memory of 1936	1976	ab84f8131f507e2ced9d2e3d7826e5b90ce9c939a44042f8adea37bf4734f996.exe	busshost.exe
PID 1976 wrote to memory of 1936	1976	ab84f8131f507e2ced9d2e3d7826e5b90ce9c939a44042f8adea37bf4734f996.exe	busshost.exe
PID 1976 wrote to memory of 1756	1976	ab84f8131f507e2ced9d2e3d7826e5b90ce9c939a44042f8adea37bf4734f996.exe	YTLoader.exe
PID 1976 wrote to memory of 1756	1976	ab84f8131f507e2ced9d2e3d7826e5b90ce9c939a44042f8adea37bf4734f996.exe	YTLoader.exe
PID 1976 wrote to memory of 1756	1976	ab84f8131f507e2ced9d2e3d7826e5b90ce9c939a44042f8adea37bf4734f996.exe	YTLoader.exe
PID 1976 wrote to memory of 1756	1976	ab84f8131f507e2ced9d2e3d7826e5b90ce9c939a44042f8adea37bf4734f996.exe	YTLoader.exe
PID 1756 wrote to memory of 1804	1756	YTLoader.exe	WerFault.exe
PID 1756 wrote to memory of 1804	1756	YTLoader.exe	WerFault.exe
PID 1756 wrote to memory of 1804	1756	YTLoader.exe	WerFault.exe
PID 1756 wrote to memory of 1804	1756	YTLoader.exe	WerFault.exe

C:\Users\Admin\AppData\Local\Temp\ab84f8131f507e2ced9d2e3d7826e5b90ce9c939a44042f8adea37bf4734f996.exe
"C:\Users\Admin\AppData\Local\Temp\ab84f8131f507e2ced9d2e3d7826e5b90ce9c939a44042f8adea37bf4734f996.exe"
1⤵
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:1976

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:1936

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:1756

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1756 -s 1084
3⤵
- Loads dropped DLL
- Program crash
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
PID:1804

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

Loading Replay Monitor...

Downloads

C:\Program Files (x86)\LetsSee!\YTLoader.exe
MD5
adc9db2753fa3daa6a8156254ba2a5f1

SHA1
50ff27e2e1c4acc35768b93b73c03f7630027f04

SHA256
f8cc40321301d39f03eaa48d42cbbb2e953b694dc13ccf9d986032c621223fde

SHA512
5f7fca8da622035f3a83e562d727ccdd842d623ec376f93c75c3218bddd970c34a9efc66a33cfd6e52a398fa2ed090b890d05aecef53f65a22917d50d31a1195

Download Submit
C:\Program Files (x86)\LetsSee!\YTLoader.exe
MD5
adc9db2753fa3daa6a8156254ba2a5f1

SHA1
50ff27e2e1c4acc35768b93b73c03f7630027f04

SHA256
f8cc40321301d39f03eaa48d42cbbb2e953b694dc13ccf9d986032c621223fde

SHA512
5f7fca8da622035f3a83e562d727ccdd842d623ec376f93c75c3218bddd970c34a9efc66a33cfd6e52a398fa2ed090b890d05aecef53f65a22917d50d31a1195

Download Submit
C:\Program Files (x86)\LetsSee!\busshost.exe
MD5
3b672054b72e6d21037a88a75772436b

SHA1
a2a640122fe3fe5775788239e6d653de7b21bf17

SHA256
0bb79d6a333b05abf87f42612396665de5eb4868c54b4b8c2f20034351c09a18

SHA512
cf70168bbda17223f35ae65ddf4c0b98d9b1bb88f912d292085e18efd2e289a708c97c6f76e39aa653bf30f5e268c8544175d7418d228480972f09681af87343

Download Submit
\Program Files (x86)\LetsSee!\YTLoader.exe
MD5
adc9db2753fa3daa6a8156254ba2a5f1

SHA1
50ff27e2e1c4acc35768b93b73c03f7630027f04

SHA256
f8cc40321301d39f03eaa48d42cbbb2e953b694dc13ccf9d986032c621223fde

SHA512
5f7fca8da622035f3a83e562d727ccdd842d623ec376f93c75c3218bddd970c34a9efc66a33cfd6e52a398fa2ed090b890d05aecef53f65a22917d50d31a1195

Download Submit
\Program Files (x86)\LetsSee!\YTLoader.exe
MD5
adc9db2753fa3daa6a8156254ba2a5f1

SHA1
50ff27e2e1c4acc35768b93b73c03f7630027f04

SHA256
f8cc40321301d39f03eaa48d42cbbb2e953b694dc13ccf9d986032c621223fde

SHA512
5f7fca8da622035f3a83e562d727ccdd842d623ec376f93c75c3218bddd970c34a9efc66a33cfd6e52a398fa2ed090b890d05aecef53f65a22917d50d31a1195

Download Submit
\Program Files (x86)\LetsSee!\YTLoader.exe
MD5
adc9db2753fa3daa6a8156254ba2a5f1

SHA1
50ff27e2e1c4acc35768b93b73c03f7630027f04

SHA256
f8cc40321301d39f03eaa48d42cbbb2e953b694dc13ccf9d986032c621223fde

SHA512
5f7fca8da622035f3a83e562d727ccdd842d623ec376f93c75c3218bddd970c34a9efc66a33cfd6e52a398fa2ed090b890d05aecef53f65a22917d50d31a1195

Download Submit
\Program Files (x86)\LetsSee!\YTLoader.exe
MD5
adc9db2753fa3daa6a8156254ba2a5f1

SHA1
50ff27e2e1c4acc35768b93b73c03f7630027f04

SHA256
f8cc40321301d39f03eaa48d42cbbb2e953b694dc13ccf9d986032c621223fde

SHA512
5f7fca8da622035f3a83e562d727ccdd842d623ec376f93c75c3218bddd970c34a9efc66a33cfd6e52a398fa2ed090b890d05aecef53f65a22917d50d31a1195

Download Submit
\Program Files (x86)\LetsSee!\YTLoader.exe
MD5
adc9db2753fa3daa6a8156254ba2a5f1

SHA1
50ff27e2e1c4acc35768b93b73c03f7630027f04

SHA256
f8cc40321301d39f03eaa48d42cbbb2e953b694dc13ccf9d986032c621223fde

SHA512
5f7fca8da622035f3a83e562d727ccdd842d623ec376f93c75c3218bddd970c34a9efc66a33cfd6e52a398fa2ed090b890d05aecef53f65a22917d50d31a1195

Download Submit
\Program Files (x86)\LetsSee!\YTLoader.exe
MD5
adc9db2753fa3daa6a8156254ba2a5f1

SHA1
50ff27e2e1c4acc35768b93b73c03f7630027f04

SHA256
f8cc40321301d39f03eaa48d42cbbb2e953b694dc13ccf9d986032c621223fde

SHA512
5f7fca8da622035f3a83e562d727ccdd842d623ec376f93c75c3218bddd970c34a9efc66a33cfd6e52a398fa2ed090b890d05aecef53f65a22917d50d31a1195

Download Submit
\Program Files (x86)\LetsSee!\busshost.exe
MD5
3b672054b72e6d21037a88a75772436b

SHA1
a2a640122fe3fe5775788239e6d653de7b21bf17

SHA256
0bb79d6a333b05abf87f42612396665de5eb4868c54b4b8c2f20034351c09a18

SHA512
cf70168bbda17223f35ae65ddf4c0b98d9b1bb88f912d292085e18efd2e289a708c97c6f76e39aa653bf30f5e268c8544175d7418d228480972f09681af87343

Download Submit
\Program Files (x86)\LetsSee!\busshost.exe
MD5
3b672054b72e6d21037a88a75772436b

SHA1
a2a640122fe3fe5775788239e6d653de7b21bf17

SHA256
0bb79d6a333b05abf87f42612396665de5eb4868c54b4b8c2f20034351c09a18

SHA512
cf70168bbda17223f35ae65ddf4c0b98d9b1bb88f912d292085e18efd2e289a708c97c6f76e39aa653bf30f5e268c8544175d7418d228480972f09681af87343

Download Submit
memory/1756-78-0x00000000004F0000-0x00000000004F5000-memory.dmp

Filesize
20KB

Download
memory/1756-84-0x0000000000830000-0x0000000000831000-memory.dmp

Filesize
4KB

Download
memory/1756-75-0x0000000005170000-0x00000000055C5000-memory.dmp

Filesize
4.3MB

Download
memory/1756-76-0x0000000000450000-0x0000000000459000-memory.dmp

Filesize
36KB

Download
memory/1756-77-0x00000000004E0000-0x00000000004E5000-memory.dmp

Filesize
20KB

Download
memory/1756-67-0x0000000000000000-mapping.dmp

Download
memory/1756-79-0x0000000000510000-0x0000000000511000-memory.dmp

Filesize
4KB

Download
memory/1756-80-0x0000000000560000-0x0000000000561000-memory.dmp

Filesize
4KB

Download
memory/1756-81-0x0000000000570000-0x0000000000578000-memory.dmp

Filesize
32KB

Download
memory/1756-82-0x0000000000580000-0x0000000000581000-memory.dmp

Filesize
4KB

Download
memory/1756-83-0x0000000000590000-0x0000000000591000-memory.dmp

Filesize
4KB

Download
memory/1756-74-0x0000000000230000-0x0000000000234000-memory.dmp

Filesize
16KB

Download
memory/1756-85-0x0000000000840000-0x0000000000841000-memory.dmp

Filesize
4KB

Download
memory/1756-86-0x0000000000860000-0x0000000000861000-memory.dmp

Filesize
4KB

Download
memory/1756-87-0x0000000000870000-0x0000000000871000-memory.dmp

Filesize
4KB

Download
memory/1756-70-0x0000000000FF0000-0x0000000000FF1000-memory.dmp

Filesize
4KB

Download
memory/1756-73-0x0000000000AD0000-0x0000000000AD1000-memory.dmp

Filesize
4KB

Download
memory/1804-88-0x0000000000000000-mapping.dmp

Download
memory/1804-94-0x00000000003D0000-0x00000000003D1000-memory.dmp

Filesize
4KB

Download
memory/1936-72-0x0000000000400000-0x0000000000591000-memory.dmp

Filesize
1.6MB

Download
memory/1936-63-0x0000000000000000-mapping.dmp

Download
memory/1976-60-0x0000000075DA1000-0x0000000075DA3000-memory.dmp

Filesize
8KB

Download