vidar | ba981a94852325debf0e4b478266f6efd8e4e9c5b149fd9ad277be0be5045768

Resubmissions

17/06/2022, 20:38

220617-zevjfsfgf610

19/04/2022, 05:58

220419-gn6c7sbef710

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
Sample220419-gn6c7sbef7
SHA256 ba981a94852325debf0e4b478266f6efd8e4e9c5b149fd9ad277be0be5045768
MD5 a13e3b18282318c65f096bad322b3c50
SHA1 2c76179e95e583b588bcd516e94e7a2da52d5299
SHA512 acb009f4b622ab7e8729dac2c45da975ba2305612c9575e5c8ce221edecf2d49da2236fc28b00d8f424a251765b935d8acce7bf40a1557d9fc79ba446250e786
MD5 SHA1 SHA512

Score

10^/10

vidar 517 discovery spyware stealer

Malware Config

Extracted

Family

vidar

Version

51.4

Botnet

https://t.me/hi20220403
https://mastodon.social/@sam5al

Attributes

profile_id
517

Signatures

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

Vidar Stealer 5 IoCs

stealer

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

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

description	pid	Process	procid_target
PID 3132 set thread context of 548	3132	build2.exe	81

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

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

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

description	pid	Process	procid_target
PID 3132 wrote to memory of 548	3132	build2.exe	81
PID 3132 wrote to memory of 548	3132	build2.exe	81
PID 3132 wrote to memory of 548	3132	build2.exe	81
PID 3132 wrote to memory of 548	3132	build2.exe	81
PID 3132 wrote to memory of 548	3132	build2.exe	81
PID 3132 wrote to memory of 548	3132	build2.exe	81
PID 3132 wrote to memory of 548	3132	build2.exe	81
PID 3132 wrote to memory of 548	3132	build2.exe	81

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 Enterprise 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

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

mozglue.dll

Path C:\ProgramData\mozglue.dll
Size 133KB
SHA256 3fe6b1c54b8cf28f571e0c5d6636b4069a8ab00b4f11dd842cfec00691d0c9cd
MD5 8f73c08a9660691143661bf7332c3c27
SHA1 37fa65dd737c50fda710fdbde89e51374d0c204a
SHA512 0042ecf9b3571bb5eba2de893e8b2371df18f7c5a589f52ee66e4bfbaa15a5b8b7cc6a155792aaa8988528c27196896d5e82e1751c998bacea0d92395f66ad89
SSDEEP 3072:7Gyzk/x2Wp53pUzPoNpj/kVghp1qt/dXDyp4D2JJJvPhrSeTuk:6yQ2Wp53iO/kVghp12/dXDyyD2JJJvPR
MD5 SHA1 SHA512 SSDEEP

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nss3.dll

Path C:\ProgramData\nss3.dll
Size 1.2MB
SHA256 e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78
MD5 bfac4e3c5908856ba17d41edcd455a51
SHA1 8eec7e888767aa9e4cca8ff246eb2aacb9170428
SHA512 2565bab776c4d732ffb1f9b415992a4c65b81bcd644a9a1df1333a269e322925fc1df4f76913463296efd7c88ef194c3056de2f1ca1357d7b5fe5ff0da877a66
SSDEEP 24576:Sb5zzlswYNYLVJAwfpeYQ1Dw/fEE8DhSJVIVfRyAkgO6S/V/jbHpls4MSRSMxkoo:4zW5ygDwnEZIYkjgWjblMSRSMqH
MD5 SHA1 SHA512 SSDEEP

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

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

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

Download

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

Download

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

Download

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

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