vidar | 8b2fc3bb6447331f0eb3e849df926209614f25b88de9baff4a447da95948bf3f

General

Target

8b2fc3bb6447331f0eb3e849df926209614f25b88de9baff4a447da95948bf3f.exe
Size

628KB
MD5

77f161d85c24320576c3cadbf3a15533
SHA1

f29f7facad8e1b16254b6394304c0afc09a6241f
SHA256

8b2fc3bb6447331f0eb3e849df926209614f25b88de9baff4a447da95948bf3f
SHA512

720d20d50713f6efef3bfd234dc0dc8c5eebbbc2d367641ea8534ce6e1f15212b6ed0d8b280159105f00a6562fdd8daf7dc5bca20d40b9c660bcd2fdc92530a5

Score

10^/10

vidar 937 discovery spyware stealer suricata

Malware Config

Extracted

Family

vidar

Version

48.3

Botnet

937

Attributes

profile_id
937

Signatures

Vidar
Vidar is an infostealer based on Arkei stealer.
stealer vidar
suricata: ET MALWARE Suspicious Zipped Filename in Outbound POST Request (Passwords.txt)
suricata: ET MALWARE Suspicious Zipped Filename in Outbound POST Request (Passwords.txt)
suricata
suricata: ET MALWARE Suspicious Zipped Filename in Outbound POST Request (Passwords.txt) M2
suricata: ET MALWARE Suspicious Zipped Filename in Outbound POST Request (Passwords.txt) M2
suricata
suricata: ET MALWARE Suspicious Zipped Filename in Outbound POST Request (passwords.txt) M2
suricata: ET MALWARE Suspicious Zipped Filename in Outbound POST Request (passwords.txt) M2
suricata
suricata: ET MALWARE Vidar/Arkei Stealer Client Data Upload
suricata: ET MALWARE Vidar/Arkei Stealer Client Data Upload
suricata
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/1340-56-0x00000000004E0000-0x00000000005B5000-memory.dmp	family_vidar
behavioral1/memory/1340-57-0x0000000000400000-0x00000000004D8000-memory.dmp	family_vidar

Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

432 cmd.exe
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
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

pid	process
432	cmd.exe

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

8b2fc3bb6447331f0eb3e849df926209614f25b88de9baff4a447da95948bf3f.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	8b2fc3bb6447331f0eb3e849df926209614f25b88de9baff4a447da95948bf3f.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	8b2fc3bb6447331f0eb3e849df926209614f25b88de9baff4a447da95948bf3f.exe

Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

1248 timeout.exe
Kills process with taskkill 1 IoCs
evasion

Processes:

taskkill.exe

pid process

1284 taskkill.exe

pid	process
1248	timeout.exe

pid	process
1284	taskkill.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

8b2fc3bb6447331f0eb3e849df926209614f25b88de9baff4a447da95948bf3f.exe

pid	process
1340	8b2fc3bb6447331f0eb3e849df926209614f25b88de9baff4a447da95948bf3f.exe
1340	8b2fc3bb6447331f0eb3e849df926209614f25b88de9baff4a447da95948bf3f.exe
1340	8b2fc3bb6447331f0eb3e849df926209614f25b88de9baff4a447da95948bf3f.exe
1340	8b2fc3bb6447331f0eb3e849df926209614f25b88de9baff4a447da95948bf3f.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

taskkill.exe

description pid process

Token: SeDebugPrivilege 1284 taskkill.exe

description	pid	process
Token: SeDebugPrivilege	1284	taskkill.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

8b2fc3bb6447331f0eb3e849df926209614f25b88de9baff4a447da95948bf3f.execmd.exe

description	pid	process	target process
PID 1340 wrote to memory of 432	1340	8b2fc3bb6447331f0eb3e849df926209614f25b88de9baff4a447da95948bf3f.exe	cmd.exe
PID 1340 wrote to memory of 432	1340	8b2fc3bb6447331f0eb3e849df926209614f25b88de9baff4a447da95948bf3f.exe	cmd.exe
PID 1340 wrote to memory of 432	1340	8b2fc3bb6447331f0eb3e849df926209614f25b88de9baff4a447da95948bf3f.exe	cmd.exe
PID 1340 wrote to memory of 432	1340	8b2fc3bb6447331f0eb3e849df926209614f25b88de9baff4a447da95948bf3f.exe	cmd.exe
PID 432 wrote to memory of 1284	432	cmd.exe	taskkill.exe
PID 432 wrote to memory of 1284	432	cmd.exe	taskkill.exe
PID 432 wrote to memory of 1284	432	cmd.exe	taskkill.exe
PID 432 wrote to memory of 1284	432	cmd.exe	taskkill.exe
PID 432 wrote to memory of 1248	432	cmd.exe	timeout.exe
PID 432 wrote to memory of 1248	432	cmd.exe	timeout.exe
PID 432 wrote to memory of 1248	432	cmd.exe	timeout.exe
PID 432 wrote to memory of 1248	432	cmd.exe	timeout.exe

C:\Users\Admin\AppData\Local\Temp\8b2fc3bb6447331f0eb3e849df926209614f25b88de9baff4a447da95948bf3f.exe
"C:\Users\Admin\AppData\Local\Temp\8b2fc3bb6447331f0eb3e849df926209614f25b88de9baff4a447da95948bf3f.exe"
1⤵
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1340

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c taskkill /im 8b2fc3bb6447331f0eb3e849df926209614f25b88de9baff4a447da95948bf3f.exe /f & timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\Temp\8b2fc3bb6447331f0eb3e849df926209614f25b88de9baff4a447da95948bf3f.exe" & del C:\ProgramData\*.dll & exit
2⤵
- Deletes itself
- Suspicious use of WriteProcessMemory
PID:432

C:\Windows\SysWOW64\taskkill.exe
taskkill /im 8b2fc3bb6447331f0eb3e849df926209614f25b88de9baff4a447da95948bf3f.exe /f
3⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:1284

C:\Windows\SysWOW64\timeout.exe
timeout /t 6
3⤵
- Delays execution with timeout.exe
PID:1248

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

2

T1081

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Data from Local System

2

T1005

Exfiltration

Command and Control

Impact

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Downloads

C:\ProgramData\freebl3.dll
MD5
8eec510e57f5f732fd2cce73df7b73ef

SHA1
3c0af39ecb3753c5fee3b53d063c7286019eac3b

SHA256
55f7d9e99b8e2d4e0e193b2f0275501e6d9c1ebd29cadbea6a0da48a8587e3e0

SHA512
73bbf698482132b5fd60a0b58926fddec9055f8095a53bc52714e211e9340c3419736ceafd6b279667810114d306bfccdcfcddf51c0b67fe9e3c73c54583e574

Download Submit
C:\ProgramData\mozglue.dll
MD5
8eec510e57f5f732fd2cce73df7b73ef

SHA1
3c0af39ecb3753c5fee3b53d063c7286019eac3b

SHA256
55f7d9e99b8e2d4e0e193b2f0275501e6d9c1ebd29cadbea6a0da48a8587e3e0

SHA512
73bbf698482132b5fd60a0b58926fddec9055f8095a53bc52714e211e9340c3419736ceafd6b279667810114d306bfccdcfcddf51c0b67fe9e3c73c54583e574

Download Submit
C:\ProgramData\msvcp140.dll
MD5
8eec510e57f5f732fd2cce73df7b73ef

SHA1
3c0af39ecb3753c5fee3b53d063c7286019eac3b

SHA256
55f7d9e99b8e2d4e0e193b2f0275501e6d9c1ebd29cadbea6a0da48a8587e3e0

SHA512
73bbf698482132b5fd60a0b58926fddec9055f8095a53bc52714e211e9340c3419736ceafd6b279667810114d306bfccdcfcddf51c0b67fe9e3c73c54583e574

Download Submit
C:\ProgramData\nss3.dll
MD5
8eec510e57f5f732fd2cce73df7b73ef

SHA1
3c0af39ecb3753c5fee3b53d063c7286019eac3b

SHA256
55f7d9e99b8e2d4e0e193b2f0275501e6d9c1ebd29cadbea6a0da48a8587e3e0

SHA512
73bbf698482132b5fd60a0b58926fddec9055f8095a53bc52714e211e9340c3419736ceafd6b279667810114d306bfccdcfcddf51c0b67fe9e3c73c54583e574

Download Submit
C:\ProgramData\softokn3.dll
MD5
8eec510e57f5f732fd2cce73df7b73ef

SHA1
3c0af39ecb3753c5fee3b53d063c7286019eac3b

SHA256
55f7d9e99b8e2d4e0e193b2f0275501e6d9c1ebd29cadbea6a0da48a8587e3e0

SHA512
73bbf698482132b5fd60a0b58926fddec9055f8095a53bc52714e211e9340c3419736ceafd6b279667810114d306bfccdcfcddf51c0b67fe9e3c73c54583e574

Download Submit
C:\ProgramData\vcruntime140.dll
MD5
8eec510e57f5f732fd2cce73df7b73ef

SHA1
3c0af39ecb3753c5fee3b53d063c7286019eac3b

SHA256
55f7d9e99b8e2d4e0e193b2f0275501e6d9c1ebd29cadbea6a0da48a8587e3e0

SHA512
73bbf698482132b5fd60a0b58926fddec9055f8095a53bc52714e211e9340c3419736ceafd6b279667810114d306bfccdcfcddf51c0b67fe9e3c73c54583e574

Download Submit
memory/1340-54-0x0000000075CE1000-0x0000000075CE3000-memory.dmp

Filesize
8KB

Download
memory/1340-55-0x0000000000220000-0x000000000029B000-memory.dmp

Filesize
492KB

Download
memory/1340-56-0x00000000004E0000-0x00000000005B5000-memory.dmp

Filesize
852KB

Download
memory/1340-57-0x0000000000400000-0x00000000004D8000-memory.dmp

Filesize
864KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads