vidar | ba981a94852325debf0e4b478266f6efd8e4e9c5b149fd9ad277be0be5045768

Resubmissions

17-06-2022 20:38

220617-zevjfsfgf6 10

19-04-2022 05:58

220419-gn6c7sbef7 10

Analysis

max time kernel
126s
max time network
131s
platform
windows10-2004_x64
resource
win10v2004-20220414-en
submitted
19-04-2022 05:58

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General

Target

build2.exe
Size

603KB
MD5

a13e3b18282318c65f096bad322b3c50
SHA1

2c76179e95e583b588bcd516e94e7a2da52d5299
SHA256

ba981a94852325debf0e4b478266f6efd8e4e9c5b149fd9ad277be0be5045768
SHA512

acb009f4b622ab7e8729dac2c45da975ba2305612c9575e5c8ce221edecf2d49da2236fc28b00d8f424a251765b935d8acce7bf40a1557d9fc79ba446250e786

Score

10^/10

vidar discovery spyware stealer

Malware Config

Signatures

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

Vidar Stealer 5 IoCs

stealer

Processes:

resource	yara_rule
behavioral2/memory/548-131-0x0000000000400000-0x00000000004AA000-memory.dmp	family_vidar
behavioral2/memory/548-132-0x0000000000400000-0x00000000004AA000-memory.dmp	family_vidar
behavioral2/memory/3132-134-0x0000000002140000-0x00000000021E8000-memory.dmp	family_vidar
behavioral2/memory/548-135-0x0000000000400000-0x00000000004AA000-memory.dmp	family_vidar
behavioral2/memory/548-136-0x0000000000400000-0x00000000004AA000-memory.dmp	family_vidar

Downloads MZ/PE file
Loads dropped DLL 2 IoCs

Processes:

build2.exe

pid process

548 build2.exe
548 build2.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
Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

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
Suspicious use of SetThreadContext 1 IoCs

Processes:

build2.exe

description pid process target process

PID 3132 set thread context of 548 3132 build2.exe build2.exe

pid	process
548	build2.exe
548	build2.exe

description	pid	process	target process
PID 3132 set thread context of 548	3132	build2.exe	build2.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:

build2.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	build2.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	build2.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

Processes:

build2.exe

pid process

548 build2.exe
548 build2.exe
548 build2.exe
548 build2.exe
548 build2.exe
548 build2.exe
548 build2.exe
548 build2.exe

pid	process
548	build2.exe
548	build2.exe
548	build2.exe
548	build2.exe
548	build2.exe
548	build2.exe
548	build2.exe
548	build2.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

build2.exe

description	pid	process	target process
PID 3132 wrote to memory of 548	3132	build2.exe	build2.exe
PID 3132 wrote to memory of 548	3132	build2.exe	build2.exe
PID 3132 wrote to memory of 548	3132	build2.exe	build2.exe
PID 3132 wrote to memory of 548	3132	build2.exe	build2.exe
PID 3132 wrote to memory of 548	3132	build2.exe	build2.exe
PID 3132 wrote to memory of 548	3132	build2.exe	build2.exe
PID 3132 wrote to memory of 548	3132	build2.exe	build2.exe
PID 3132 wrote to memory of 548	3132	build2.exe	build2.exe

C:\Users\Admin\AppData\Local\Temp\build2.exe
"C:\Users\Admin\AppData\Local\Temp\build2.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3132

C:\Users\Admin\AppData\Local\Temp\build2.exe
"C:\Users\Admin\AppData\Local\Temp\build2.exe"
2⤵
- Loads dropped DLL
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
PID:548

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:\ProgramData\mozglue.dll
Filesize
133KB

MD5
8f73c08a9660691143661bf7332c3c27

SHA1
37fa65dd737c50fda710fdbde89e51374d0c204a

SHA256
3fe6b1c54b8cf28f571e0c5d6636b4069a8ab00b4f11dd842cfec00691d0c9cd

SHA512
0042ecf9b3571bb5eba2de893e8b2371df18f7c5a589f52ee66e4bfbaa15a5b8b7cc6a155792aaa8988528c27196896d5e82e1751c998bacea0d92395f66ad89

Download Submit
C:\ProgramData\nss3.dll
Filesize
1.2MB

MD5
bfac4e3c5908856ba17d41edcd455a51

SHA1
8eec7e888767aa9e4cca8ff246eb2aacb9170428

SHA256
e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78

SHA512
2565bab776c4d732ffb1f9b415992a4c65b81bcd644a9a1df1333a269e322925fc1df4f76913463296efd7c88ef194c3056de2f1ca1357d7b5fe5ff0da877a66

Download Submit
memory/548-130-0x0000000000000000-mapping.dmp

Download
memory/548-131-0x0000000000400000-0x00000000004AA000-memory.dmp

Filesize
680KB

Download
memory/548-132-0x0000000000400000-0x00000000004AA000-memory.dmp

Filesize
680KB

Download
memory/548-135-0x0000000000400000-0x00000000004AA000-memory.dmp

Filesize
680KB

Download
memory/548-136-0x0000000000400000-0x00000000004AA000-memory.dmp

Filesize
680KB

Download
memory/3132-133-0x000000000066C000-0x00000000006D4000-memory.dmp

Filesize
416KB

Download
memory/3132-134-0x0000000002140000-0x00000000021E8000-memory.dmp

Filesize
672KB

Download