vidar | 4dc1b446e571a032fd85293306f4142b29fdde874d29dd1cb29e278e75261347

General

Target

Unlock_Tool_1.9.exe
Size

569KB
MD5

f8cb4da82ec4542402924057ee21760a
SHA1

84df82df3e30c1c5d8b98e06d4b266525b7b5b73
SHA256

f3f89f0de3d1da4f12c1a0abd75dc4db85dcd395e1f1b32c4d9174aa6dbc0130
SHA512

a8eddd1e217371f47ba20efdcb025967fad3a626a568a4db940d38f93e939e762209241837f82ea34f0c0d27e4aeaf542d4fa7c8ab04718e4413c7183392b23f
SSDEEP

12288:1oaJhKfgnjXiT/qbO0Y6gdq56Geag0gmx5DZsco/A3YLcruK1MoSYIi:6a6fgbbLEdSapmxRZscXuKSoSJ

Score

10^/10

vidar 962abdb0b49579401d25d63a1f697be6 credential_access discovery spyware stealer

Malware Config

Extracted

Family

vidar

Version

11

Botnet

962abdb0b49579401d25d63a1f697be6

C2

https://steamcommunity.com/profiles/76561199780418869

https://t.me/ae5ed

Attributes

user_agent
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:130.0) Gecko/20100101 Firefox/130.0

Signatures

Detect Vidar Stealer 14 IoCs

stealer

resource	yara_rule
behavioral1/memory/4460-1-0x0000000000400000-0x0000000000675000-memory.dmp	family_vidar_v7
behavioral1/memory/4460-3-0x0000000000400000-0x0000000000675000-memory.dmp	family_vidar_v7
behavioral1/memory/4460-6-0x0000000000400000-0x0000000000675000-memory.dmp	family_vidar_v7
behavioral1/memory/4460-13-0x0000000000400000-0x0000000000675000-memory.dmp	family_vidar_v7
behavioral1/memory/4460-14-0x0000000000400000-0x0000000000675000-memory.dmp	family_vidar_v7
behavioral1/memory/4460-30-0x0000000000400000-0x0000000000675000-memory.dmp	family_vidar_v7
behavioral1/memory/4460-31-0x0000000000400000-0x0000000000675000-memory.dmp	family_vidar_v7
behavioral1/memory/4460-47-0x0000000000400000-0x0000000000675000-memory.dmp	family_vidar_v7
behavioral1/memory/4460-48-0x0000000000400000-0x0000000000675000-memory.dmp	family_vidar_v7
behavioral1/memory/4460-70-0x0000000000400000-0x0000000000675000-memory.dmp	family_vidar_v7
behavioral1/memory/4460-71-0x0000000000400000-0x0000000000675000-memory.dmp	family_vidar_v7
behavioral1/memory/4460-78-0x0000000000400000-0x0000000000675000-memory.dmp	family_vidar_v7
behavioral1/memory/4460-79-0x0000000000400000-0x0000000000675000-memory.dmp	family_vidar_v7
behavioral1/memory/4460-80-0x0000000000400000-0x0000000000675000-memory.dmp	family_vidar_v7

Vidar
Vidar is an infostealer based on Arkei stealer.
stealer vidar
Downloads MZ/PE file

Loads dropped DLL 2 IoCs

pid	Process
4460	MSBuild.exe
4460	MSBuild.exe

Unsecured Credentials: Credentials In Files 1 TTPs
Steal credentials from unsecured files.
credential_access stealer

Credentials In Files
T1552.001
Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

Data from Local System
T1005

Credentials In Files
T1552.001

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4156 set thread context of 4460	4156	Unlock_Tool_1.9.exe	82

Browser Information Discovery 1 TTPs
Enumerate browser information.
discovery

Browser Information Discovery
T1217

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1940	4156	WerFault.exe	81

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Unlock_Tool_1.9.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	MSBuild.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

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

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
4460	MSBuild.exe
4460	MSBuild.exe
4460	MSBuild.exe
4460	MSBuild.exe
4460	MSBuild.exe
4460	MSBuild.exe
4460	MSBuild.exe
4460	MSBuild.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 4156 wrote to memory of 4460	4156	Unlock_Tool_1.9.exe	82
PID 4156 wrote to memory of 4460	4156	Unlock_Tool_1.9.exe	82
PID 4156 wrote to memory of 4460	4156	Unlock_Tool_1.9.exe	82
PID 4156 wrote to memory of 4460	4156	Unlock_Tool_1.9.exe	82
PID 4156 wrote to memory of 4460	4156	Unlock_Tool_1.9.exe	82
PID 4156 wrote to memory of 4460	4156	Unlock_Tool_1.9.exe	82
PID 4156 wrote to memory of 4460	4156	Unlock_Tool_1.9.exe	82
PID 4156 wrote to memory of 4460	4156	Unlock_Tool_1.9.exe	82
PID 4156 wrote to memory of 4460	4156	Unlock_Tool_1.9.exe	82
PID 4156 wrote to memory of 4460	4156	Unlock_Tool_1.9.exe	82

C:\Users\Admin\AppData\Local\Temp\Unlock_Tool_1.9.exe
"C:\Users\Admin\AppData\Local\Temp\Unlock_Tool_1.9.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4156
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  PID:4460
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4156 -s 260
  2⤵
  - Program crash
  PID:1940

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4156 -ip 4156
1⤵
PID:2860

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

2

T1552

Credentials In Files

2

T1552.001

Discovery

Browser Information Discovery

Query Registry

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\ProgramData\mozglue.dll

Filesize
593KB

MD5
c8fd9be83bc728cc04beffafc2907fe9

SHA1
95ab9f701e0024cedfbd312bcfe4e726744c4f2e

SHA256
ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a

SHA512
fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040

Download Submit
C:\ProgramData\nss3.dll

Filesize
2.0MB

MD5
1cc453cdf74f31e4d913ff9c10acdde2

SHA1
6e85eae544d6e965f15fa5c39700fa7202f3aafe

SHA256
ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5

SHA512
dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571

Download Submit
memory/4156-0-0x000000000058C000-0x000000000058D000-memory.dmp

Filesize
4KB

Download
memory/4460-13-0x0000000000400000-0x0000000000675000-memory.dmp

Filesize
2.5MB

Download
memory/4460-48-0x0000000000400000-0x0000000000675000-memory.dmp

Filesize
2.5MB

Download
memory/4460-14-0x0000000000400000-0x0000000000675000-memory.dmp

Filesize
2.5MB

Download
memory/4460-15-0x00000000220A0000-0x00000000222FF000-memory.dmp

Filesize
2.4MB

Download
memory/4460-30-0x0000000000400000-0x0000000000675000-memory.dmp

Filesize
2.5MB

Download
memory/4460-31-0x0000000000400000-0x0000000000675000-memory.dmp

Filesize
2.5MB

Download
memory/4460-47-0x0000000000400000-0x0000000000675000-memory.dmp

Filesize
2.5MB

Download
memory/4460-6-0x0000000000400000-0x0000000000675000-memory.dmp

Filesize
2.5MB

Download
memory/4460-3-0x0000000000400000-0x0000000000675000-memory.dmp

Filesize
2.5MB

Download
memory/4460-1-0x0000000000400000-0x0000000000675000-memory.dmp

Filesize
2.5MB

Download
memory/4460-70-0x0000000000400000-0x0000000000675000-memory.dmp

Filesize
2.5MB

Download
memory/4460-71-0x0000000000400000-0x0000000000675000-memory.dmp

Filesize
2.5MB

Download
memory/4460-78-0x0000000000400000-0x0000000000675000-memory.dmp

Filesize
2.5MB

Download
memory/4460-79-0x0000000000400000-0x0000000000675000-memory.dmp

Filesize
2.5MB

Download
memory/4460-80-0x0000000000400000-0x0000000000675000-memory.dmp

Filesize
2.5MB

Download

Analysis

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