vidar | 42cd7de6925300b74c8e007681e1f97e87082e5e634bac8825e9ea2e8772f262

Analysis

max time kernel
114s
max time network
118s
platform
windows7_x64
resource
win7-20220414-en
submitted
08-07-2022 01:00

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General

Target

42cd7de6925300b74c8e007681e1f97e87082e5e634bac8825e9ea2e8772f262.exe
Size

3.6MB
MD5

5604e1ed6dabccec6eeaa19858e9b083
SHA1

779d5880cc9ad5250a28e024c756f46056a51147
SHA256

42cd7de6925300b74c8e007681e1f97e87082e5e634bac8825e9ea2e8772f262
SHA512

6ee031648a499099841cf6d4c3cdd842d30c39f1b6cc7ed1421f3027d5f0c5a838eb0656f4388ba0668de45f30818bbe1d0f7db2aec70766029160dd6683f592

Score

10^/10

vidar 231 discovery spyware stealer suricata

Malware Config

Extracted

Family

vidar

Version

10.6

Botnet

231

http://coinchangerapi.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 2 IoCs

stealer

Processes:

resource	yara_rule
behavioral1/memory/760-66-0x0000000000400000-0x00000000004AD000-memory.dmp	family_vidar
behavioral1/memory/760-71-0x0000000000400000-0x00000000004AD000-memory.dmp	family_vidar

Executes dropped EXE 2 IoCs

Processes:

busshost.exeYTLoader.exe

pid process

760 busshost.exe
1960 YTLoader.exe

pid	process
760	busshost.exe
1960	YTLoader.exe

Loads dropped DLL 8 IoCs

Processes:

42cd7de6925300b74c8e007681e1f97e87082e5e634bac8825e9ea2e8772f262.exeWerFault.exe

pid	process
1704	42cd7de6925300b74c8e007681e1f97e87082e5e634bac8825e9ea2e8772f262.exe
1704	42cd7de6925300b74c8e007681e1f97e87082e5e634bac8825e9ea2e8772f262.exe
1704	42cd7de6925300b74c8e007681e1f97e87082e5e634bac8825e9ea2e8772f262.exe
1332	WerFault.exe
1332	WerFault.exe
1332	WerFault.exe
1332	WerFault.exe
1332	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

6 ip-api.com

flow	ioc
6	ip-api.com

Drops file in Program Files directory 4 IoCs

Processes:

42cd7de6925300b74c8e007681e1f97e87082e5e634bac8825e9ea2e8772f262.exe

description	ioc	process
File opened for modification	C:\Program Files (x86)\LetsSee!\YTLoader.exe	42cd7de6925300b74c8e007681e1f97e87082e5e634bac8825e9ea2e8772f262.exe
File opened for modification	C:\Program Files (x86)\LetsSee!\busshost.exe	42cd7de6925300b74c8e007681e1f97e87082e5e634bac8825e9ea2e8772f262.exe
File opened for modification	C:\Program Files (x86)\LetsSee!\Uninstall.exe	42cd7de6925300b74c8e007681e1f97e87082e5e634bac8825e9ea2e8772f262.exe
File created	C:\Program Files (x86)\LetsSee!\Uninstall.ini	42cd7de6925300b74c8e007681e1f97e87082e5e634bac8825e9ea2e8772f262.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

1332 1960 WerFault.exe YTLoader.exe

pid	pid_target	process	target process
1332	1960	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

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

Processes:

YTLoader.exe

description pid process

Token: SeDebugPrivilege 1960 YTLoader.exe

pid	process
760	busshost.exe
760	busshost.exe
760	busshost.exe
760	busshost.exe

description	pid	process
Token: SeDebugPrivilege	1960	YTLoader.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

42cd7de6925300b74c8e007681e1f97e87082e5e634bac8825e9ea2e8772f262.exeYTLoader.exe

description	pid	process	target process
PID 1704 wrote to memory of 760	1704	42cd7de6925300b74c8e007681e1f97e87082e5e634bac8825e9ea2e8772f262.exe	busshost.exe
PID 1704 wrote to memory of 760	1704	42cd7de6925300b74c8e007681e1f97e87082e5e634bac8825e9ea2e8772f262.exe	busshost.exe
PID 1704 wrote to memory of 760	1704	42cd7de6925300b74c8e007681e1f97e87082e5e634bac8825e9ea2e8772f262.exe	busshost.exe
PID 1704 wrote to memory of 760	1704	42cd7de6925300b74c8e007681e1f97e87082e5e634bac8825e9ea2e8772f262.exe	busshost.exe
PID 1704 wrote to memory of 1960	1704	42cd7de6925300b74c8e007681e1f97e87082e5e634bac8825e9ea2e8772f262.exe	YTLoader.exe
PID 1704 wrote to memory of 1960	1704	42cd7de6925300b74c8e007681e1f97e87082e5e634bac8825e9ea2e8772f262.exe	YTLoader.exe
PID 1704 wrote to memory of 1960	1704	42cd7de6925300b74c8e007681e1f97e87082e5e634bac8825e9ea2e8772f262.exe	YTLoader.exe
PID 1704 wrote to memory of 1960	1704	42cd7de6925300b74c8e007681e1f97e87082e5e634bac8825e9ea2e8772f262.exe	YTLoader.exe
PID 1960 wrote to memory of 1332	1960	YTLoader.exe	WerFault.exe
PID 1960 wrote to memory of 1332	1960	YTLoader.exe	WerFault.exe
PID 1960 wrote to memory of 1332	1960	YTLoader.exe	WerFault.exe
PID 1960 wrote to memory of 1332	1960	YTLoader.exe	WerFault.exe

C:\Users\Admin\AppData\Local\Temp\42cd7de6925300b74c8e007681e1f97e87082e5e634bac8825e9ea2e8772f262.exe
"C:\Users\Admin\AppData\Local\Temp\42cd7de6925300b74c8e007681e1f97e87082e5e634bac8825e9ea2e8772f262.exe"
1⤵
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:1704

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:760

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:1960

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1960 -s 1084
3⤵
- Loads dropped DLL
- Program crash
PID:1332

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
611KB

MD5
d1a3e05739b25b0de2b2c050f3b87dc4

SHA1
0ea1847f4d3e901774d2897ef7fe3603fbf59f03

SHA256
ec01a54cfcafb06ab9774ff155c54db7678ba202d5b3cc7cb8c2470f3e1e8aba

SHA512
eeae77e04e08ae01a876b7ac4d5a4f15d843646347c8ef02295da27ec640d858debb8377ffcc576f7854505cef28b5adc1a3783bee96283bbf47eb06b51f1438

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
611KB

MD5
d1a3e05739b25b0de2b2c050f3b87dc4

SHA1
0ea1847f4d3e901774d2897ef7fe3603fbf59f03

SHA256
ec01a54cfcafb06ab9774ff155c54db7678ba202d5b3cc7cb8c2470f3e1e8aba

SHA512
eeae77e04e08ae01a876b7ac4d5a4f15d843646347c8ef02295da27ec640d858debb8377ffcc576f7854505cef28b5adc1a3783bee96283bbf47eb06b51f1438

Download Submit
\Program Files (x86)\LetsSee!\busshost.exe
Filesize
611KB

MD5
d1a3e05739b25b0de2b2c050f3b87dc4

SHA1
0ea1847f4d3e901774d2897ef7fe3603fbf59f03

SHA256
ec01a54cfcafb06ab9774ff155c54db7678ba202d5b3cc7cb8c2470f3e1e8aba

SHA512
eeae77e04e08ae01a876b7ac4d5a4f15d843646347c8ef02295da27ec640d858debb8377ffcc576f7854505cef28b5adc1a3783bee96283bbf47eb06b51f1438

Download Submit
memory/760-65-0x00000000002C0000-0x00000000003C0000-memory.dmp

Filesize
1024KB

Download
memory/760-66-0x0000000000400000-0x00000000004AD000-memory.dmp

Filesize
692KB

Download
memory/760-57-0x0000000000000000-mapping.dmp

Download
memory/760-70-0x00000000002C0000-0x00000000003C0000-memory.dmp

Filesize
1024KB

Download
memory/760-71-0x0000000000400000-0x00000000004AD000-memory.dmp

Filesize
692KB

Download
memory/1332-85-0x0000000000000000-mapping.dmp

Download
memory/1704-54-0x00000000755B1000-0x00000000755B3000-memory.dmp

Filesize
8KB

Download
memory/1960-73-0x0000000000230000-0x0000000000240000-memory.dmp

Filesize
64KB

Download
memory/1960-76-0x0000000000500000-0x000000000050A000-memory.dmp

Filesize
40KB

Download
memory/1960-77-0x0000000000510000-0x0000000000518000-memory.dmp

Filesize
32KB

Download
memory/1960-78-0x00000000006A0000-0x00000000006AE000-memory.dmp

Filesize
56KB

Download
memory/1960-79-0x00000000006B0000-0x00000000006B8000-memory.dmp

Filesize
32KB

Download
memory/1960-80-0x00000000006C0000-0x00000000006C8000-memory.dmp

Filesize
32KB

Download
memory/1960-81-0x00000000006D0000-0x00000000006D8000-memory.dmp

Filesize
32KB

Download
memory/1960-82-0x00000000006E0000-0x00000000006E8000-memory.dmp

Filesize
32KB

Download
memory/1960-83-0x0000000000700000-0x0000000000708000-memory.dmp

Filesize
32KB

Download
memory/1960-84-0x0000000000710000-0x0000000000718000-memory.dmp

Filesize
32KB

Download
memory/1960-74-0x0000000000280000-0x000000000028A000-memory.dmp

Filesize
40KB

Download
memory/1960-75-0x0000000000290000-0x000000000029A000-memory.dmp

Filesize
40KB

Download
memory/1960-72-0x00000000052B0000-0x000000000570A000-memory.dmp

Filesize
4.4MB

Download
memory/1960-68-0x00000000001F0000-0x00000000001FA000-memory.dmp

Filesize
40KB

Download
memory/1960-67-0x00000000012E0000-0x00000000015E8000-memory.dmp

Filesize
3.0MB

Download
memory/1960-60-0x0000000000000000-mapping.dmp

Download