vidar | a06033fed83a8bfc744a5102fc88003720cb55d5c488ec3eae51f28883814e9f

Analysis

max time kernel
149s
max time network
155s
platform
windows7_x64
resource
win7-20220414-en
submitted
25-06-2022 05:37

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General

Target

a06033fed83a8bfc744a5102fc88003720cb55d5c488ec3eae51f28883814e9f.exe
Size

3.6MB
MD5

2f34dfbb3d231ffefcf9d15ba70a14e0
SHA1

01350475336c95a26b7c0b5d4710b2acd2e57b74
SHA256

a06033fed83a8bfc744a5102fc88003720cb55d5c488ec3eae51f28883814e9f
SHA512

6534c922964da91b44c320f1af41f63617adbdc9f450d36a844b63c623dc067061ec88132f071296a9bc5c56ef24ec3d495d92d7be2190ad286576e70242a39e

Score

10^/10

vidar 231 discovery spyware stealer suricata

Malware Config

Extracted

Family

vidar

Version

10.8

Botnet

231

http://idgent.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 3 IoCs

stealer

Processes:

resource	yara_rule
behavioral1/memory/1444-68-0x0000000000400000-0x0000000000CC2000-memory.dmp	family_vidar
behavioral1/memory/1444-91-0x0000000000400000-0x0000000000CC2000-memory.dmp	family_vidar
behavioral1/memory/1444-92-0x0000000000400000-0x0000000000CC2000-memory.dmp	family_vidar

Executes dropped EXE 2 IoCs

Processes:

busshost.exeYTLoader.exe

pid process

1444 busshost.exe
1880 YTLoader.exe

pid	process
1444	busshost.exe
1880	YTLoader.exe

Loads dropped DLL 8 IoCs

Processes:

a06033fed83a8bfc744a5102fc88003720cb55d5c488ec3eae51f28883814e9f.exeWerFault.exe

pid	process
784	a06033fed83a8bfc744a5102fc88003720cb55d5c488ec3eae51f28883814e9f.exe
784	a06033fed83a8bfc744a5102fc88003720cb55d5c488ec3eae51f28883814e9f.exe
784	a06033fed83a8bfc744a5102fc88003720cb55d5c488ec3eae51f28883814e9f.exe
276	WerFault.exe
276	WerFault.exe
276	WerFault.exe
276	WerFault.exe
276	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:

a06033fed83a8bfc744a5102fc88003720cb55d5c488ec3eae51f28883814e9f.exe

description	ioc	process
File opened for modification	C:\Program Files (x86)\LetsSee!\YTLoader.exe	a06033fed83a8bfc744a5102fc88003720cb55d5c488ec3eae51f28883814e9f.exe
File opened for modification	C:\Program Files (x86)\LetsSee!\busshost.exe	a06033fed83a8bfc744a5102fc88003720cb55d5c488ec3eae51f28883814e9f.exe
File opened for modification	C:\Program Files (x86)\LetsSee!\Uninstall.exe	a06033fed83a8bfc744a5102fc88003720cb55d5c488ec3eae51f28883814e9f.exe
File created	C:\Program Files (x86)\LetsSee!\Uninstall.ini	a06033fed83a8bfc744a5102fc88003720cb55d5c488ec3eae51f28883814e9f.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

276 1880 WerFault.exe YTLoader.exe

pid	pid_target	process	target process
276	1880	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

1444 busshost.exe
1444 busshost.exe
1444 busshost.exe
1444 busshost.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

YTLoader.exe

description pid process

Token: SeDebugPrivilege 1880 YTLoader.exe

pid	process
1444	busshost.exe
1444	busshost.exe
1444	busshost.exe
1444	busshost.exe

description	pid	process
Token: SeDebugPrivilege	1880	YTLoader.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

a06033fed83a8bfc744a5102fc88003720cb55d5c488ec3eae51f28883814e9f.exeYTLoader.exe

description	pid	process	target process
PID 784 wrote to memory of 1444	784	a06033fed83a8bfc744a5102fc88003720cb55d5c488ec3eae51f28883814e9f.exe	busshost.exe
PID 784 wrote to memory of 1444	784	a06033fed83a8bfc744a5102fc88003720cb55d5c488ec3eae51f28883814e9f.exe	busshost.exe
PID 784 wrote to memory of 1444	784	a06033fed83a8bfc744a5102fc88003720cb55d5c488ec3eae51f28883814e9f.exe	busshost.exe
PID 784 wrote to memory of 1444	784	a06033fed83a8bfc744a5102fc88003720cb55d5c488ec3eae51f28883814e9f.exe	busshost.exe
PID 784 wrote to memory of 1880	784	a06033fed83a8bfc744a5102fc88003720cb55d5c488ec3eae51f28883814e9f.exe	YTLoader.exe
PID 784 wrote to memory of 1880	784	a06033fed83a8bfc744a5102fc88003720cb55d5c488ec3eae51f28883814e9f.exe	YTLoader.exe
PID 784 wrote to memory of 1880	784	a06033fed83a8bfc744a5102fc88003720cb55d5c488ec3eae51f28883814e9f.exe	YTLoader.exe
PID 784 wrote to memory of 1880	784	a06033fed83a8bfc744a5102fc88003720cb55d5c488ec3eae51f28883814e9f.exe	YTLoader.exe
PID 1880 wrote to memory of 276	1880	YTLoader.exe	WerFault.exe
PID 1880 wrote to memory of 276	1880	YTLoader.exe	WerFault.exe
PID 1880 wrote to memory of 276	1880	YTLoader.exe	WerFault.exe
PID 1880 wrote to memory of 276	1880	YTLoader.exe	WerFault.exe

C:\Users\Admin\AppData\Local\Temp\a06033fed83a8bfc744a5102fc88003720cb55d5c488ec3eae51f28883814e9f.exe
"C:\Users\Admin\AppData\Local\Temp\a06033fed83a8bfc744a5102fc88003720cb55d5c488ec3eae51f28883814e9f.exe"
1⤵
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:784

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:1444

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:1880

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1880 -s 1080
3⤵
- Loads dropped DLL
- Program crash
PID:276

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
742KB

MD5
00ae12f718d3d9a50c72ce2f9eeee139

SHA1
6d6f69ec337173550b15539182ea39fa1dcf01e2

SHA256
506e2570b86297e10c9eca74dbe5d5d7f9ae50131313e947b3960a6eb7a24dde

SHA512
aadef8053440724409c3b063ce1a440ac1c961af8beef7332cbbf9d651a3ce3ddce8ac8d1d8fa843e29e6c4fd80c3cf1b08ac2fa84cd4f7fc95beccf726a5ddd

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
742KB

MD5
00ae12f718d3d9a50c72ce2f9eeee139

SHA1
6d6f69ec337173550b15539182ea39fa1dcf01e2

SHA256
506e2570b86297e10c9eca74dbe5d5d7f9ae50131313e947b3960a6eb7a24dde

SHA512
aadef8053440724409c3b063ce1a440ac1c961af8beef7332cbbf9d651a3ce3ddce8ac8d1d8fa843e29e6c4fd80c3cf1b08ac2fa84cd4f7fc95beccf726a5ddd

Download Submit
\Program Files (x86)\LetsSee!\busshost.exe
Filesize
742KB

MD5
00ae12f718d3d9a50c72ce2f9eeee139

SHA1
6d6f69ec337173550b15539182ea39fa1dcf01e2

SHA256
506e2570b86297e10c9eca74dbe5d5d7f9ae50131313e947b3960a6eb7a24dde

SHA512
aadef8053440724409c3b063ce1a440ac1c961af8beef7332cbbf9d651a3ce3ddce8ac8d1d8fa843e29e6c4fd80c3cf1b08ac2fa84cd4f7fc95beccf726a5ddd

Download Submit
memory/276-84-0x0000000000000000-mapping.dmp

Download
memory/784-54-0x0000000075701000-0x0000000075703000-memory.dmp

Filesize
8KB

Download
memory/1444-63-0x0000000000400000-0x0000000000CC2000-memory.dmp

Filesize
8.8MB

Download
memory/1444-68-0x0000000000400000-0x0000000000CC2000-memory.dmp

Filesize
8.8MB

Download
memory/1444-92-0x0000000000400000-0x0000000000CC2000-memory.dmp

Filesize
8.8MB

Download
memory/1444-91-0x0000000000400000-0x0000000000CC2000-memory.dmp

Filesize
8.8MB

Download
memory/1444-90-0x0000000000220000-0x0000000000320000-memory.dmp

Filesize
1024KB

Download
memory/1444-57-0x0000000000000000-mapping.dmp

Download
memory/1444-67-0x0000000000220000-0x0000000000320000-memory.dmp

Filesize
1024KB

Download
memory/1880-76-0x0000000000540000-0x0000000000548000-memory.dmp

Filesize
32KB

Download
memory/1880-69-0x00000000001A0000-0x00000000001AA000-memory.dmp

Filesize
40KB

Download
memory/1880-79-0x0000000000570000-0x0000000000578000-memory.dmp

Filesize
32KB

Download
memory/1880-80-0x0000000000580000-0x0000000000588000-memory.dmp

Filesize
32KB

Download
memory/1880-81-0x00000000005D0000-0x00000000005D8000-memory.dmp

Filesize
32KB

Download
memory/1880-82-0x00000000005F0000-0x00000000005F8000-memory.dmp

Filesize
32KB

Download
memory/1880-83-0x0000000000700000-0x0000000000708000-memory.dmp

Filesize
32KB

Download
memory/1880-78-0x0000000000560000-0x0000000000568000-memory.dmp

Filesize
32KB

Download
memory/1880-77-0x0000000000550000-0x000000000055E000-memory.dmp

Filesize
56KB

Download
memory/1880-71-0x00000000052C0000-0x000000000571A000-memory.dmp

Filesize
4.4MB

Download
memory/1880-66-0x0000000000960000-0x0000000000C68000-memory.dmp

Filesize
3.0MB

Download
memory/1880-60-0x0000000000000000-mapping.dmp

Download
memory/1880-75-0x00000000004B0000-0x00000000004BA000-memory.dmp

Filesize
40KB

Download
memory/1880-74-0x0000000000490000-0x000000000049A000-memory.dmp

Filesize
40KB

Download
memory/1880-73-0x0000000000480000-0x000000000048A000-memory.dmp

Filesize
40KB

Download
memory/1880-72-0x0000000000470000-0x0000000000480000-memory.dmp

Filesize
64KB

Download