vidar | f093c3d6caae966180b506123ceba03a980cee862c6d27ccf1cbc31a4803ad8c

General

Target

file.exe
Size

3.5MB
MD5

0ce7cf7cb9d41ae3d473c334443c7293
SHA1

c3be94cd8c7b4122bcd74c3cd9c3bcea15170c24
SHA256

f093c3d6caae966180b506123ceba03a980cee862c6d27ccf1cbc31a4803ad8c
SHA512

a09d2be3e7693ccf1f1b6c95a61b5aa2f2b0f3565175fcc326da746a5982a45934dc6923b2837361c33b1c25ae6629e21a4e889a9d3faa96f93d332d7219d6bd
SSDEEP

49152:mPLdm1zaOSAlDfevZhs2H4mFY0JO6sxnm4USW283JR1eXfzS1p/CvZsDKa70tjDq:KOrevZWQ40Y0em43H0rWfz8PKO0tq

Score

10^/10

vidar 91ac6183dbe67a7c09b11e88fb5493b8 credential_access discovery spyware stealer

Malware Config

Extracted

Family

vidar

Version

11

Botnet

91ac6183dbe67a7c09b11e88fb5493b8

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 12 IoCs

stealer

resource	yara_rule
behavioral1/memory/2848-22-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral1/memory/2848-20-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral1/memory/2848-18-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral1/memory/2848-17-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral1/memory/2848-15-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral1/memory/2848-25-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral1/memory/2848-165-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral1/memory/2848-184-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral1/memory/2848-214-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral1/memory/2848-233-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral1/memory/2848-363-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral1/memory/2848-464-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7

Vidar
Vidar is an infostealer based on Arkei stealer.
stealer vidar
Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
credential_access stealer

Credentials from Web Browsers
T1555.003
Downloads MZ/PE file

Loads dropped DLL 2 IoCs

pid	Process
2848	MSBuild.exe
2848	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 2856 set thread context of 2848	2856	file.exe	32

Browser Information Discovery 1 TTPs
Enumerate browser information.
discovery

Browser Information Discovery
T1217

System Location Discovery: System Language Discovery 1 TTPs 4 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	MSBuild.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	file.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

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
1868	timeout.exe

Suspicious behavior: EnumeratesProcesses 35 IoCs

pid	Process
2856	file.exe
2856	file.exe
2848	MSBuild.exe
2848	MSBuild.exe
2848	MSBuild.exe
2848	MSBuild.exe
2848	MSBuild.exe
2848	MSBuild.exe
2848	MSBuild.exe
2848	MSBuild.exe
2848	MSBuild.exe
2848	MSBuild.exe
2848	MSBuild.exe
2848	MSBuild.exe
2848	MSBuild.exe
2848	MSBuild.exe
2848	MSBuild.exe
2848	MSBuild.exe
2848	MSBuild.exe
2848	MSBuild.exe
2848	MSBuild.exe
2848	MSBuild.exe
2848	MSBuild.exe
2848	MSBuild.exe
2848	MSBuild.exe
2848	MSBuild.exe
2848	MSBuild.exe
2848	MSBuild.exe
2848	MSBuild.exe
2848	MSBuild.exe
2848	MSBuild.exe
2848	MSBuild.exe
2848	MSBuild.exe
2848	MSBuild.exe
2848	MSBuild.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2856	file.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2856 wrote to memory of 2668	2856	file.exe	31
PID 2856 wrote to memory of 2668	2856	file.exe	31
PID 2856 wrote to memory of 2668	2856	file.exe	31
PID 2856 wrote to memory of 2668	2856	file.exe	31
PID 2856 wrote to memory of 2848	2856	file.exe	32
PID 2856 wrote to memory of 2848	2856	file.exe	32
PID 2856 wrote to memory of 2848	2856	file.exe	32
PID 2856 wrote to memory of 2848	2856	file.exe	32
PID 2856 wrote to memory of 2848	2856	file.exe	32
PID 2856 wrote to memory of 2848	2856	file.exe	32
PID 2856 wrote to memory of 2848	2856	file.exe	32
PID 2856 wrote to memory of 2848	2856	file.exe	32
PID 2856 wrote to memory of 2848	2856	file.exe	32
PID 2856 wrote to memory of 2848	2856	file.exe	32
PID 2856 wrote to memory of 2848	2856	file.exe	32
PID 2848 wrote to memory of 1788	2848	MSBuild.exe	35
PID 2848 wrote to memory of 1788	2848	MSBuild.exe	35
PID 2848 wrote to memory of 1788	2848	MSBuild.exe	35
PID 2848 wrote to memory of 1788	2848	MSBuild.exe	35
PID 1788 wrote to memory of 1868	1788	cmd.exe	37
PID 1788 wrote to memory of 1868	1788	cmd.exe	37
PID 1788 wrote to memory of 1868	1788	cmd.exe	37
PID 1788 wrote to memory of 1868	1788	cmd.exe	37

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2856
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
  2⤵
  PID:2668
- 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
  - Suspicious use of WriteProcessMemory
  PID:2848
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\system32\cmd.exe" /c timeout /t 10 & rd /s /q "C:\ProgramData\IJJJKEGHJKFH" & exit
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1788
  - - C:\Windows\SysWOW64\timeout.exe
      timeout /t 10
      4⤵
      System Location Discovery: System Language Discovery
      Delays execution with timeout.exe
      PID:1868

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

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:\Users\Admin\AppData\Local\Temp\Cab6395.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Local\Temp\Tar63B8.tmp

Filesize
181KB

MD5
4ea6026cf93ec6338144661bf1202cd1

SHA1
a1dec9044f750ad887935a01430bf49322fbdcb7

SHA256
8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

SHA512
6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

Download Submit
\ProgramData\mozglue.dll

Filesize
593KB

MD5
c8fd9be83bc728cc04beffafc2907fe9

SHA1
95ab9f701e0024cedfbd312bcfe4e726744c4f2e

SHA256
ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a

SHA512
fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040

Download Submit
\ProgramData\nss3.dll

Filesize
2.0MB

MD5
1cc453cdf74f31e4d913ff9c10acdde2

SHA1
6e85eae544d6e965f15fa5c39700fa7202f3aafe

SHA256
ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5

SHA512
dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571

Download Submit
memory/2848-17-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2848-11-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2848-464-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2848-363-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2848-233-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2848-9-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2848-22-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2848-20-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2848-19-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

Filesize
4KB

Download
memory/2848-18-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2848-214-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2848-15-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2848-13-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2848-204-0x0000000020410000-0x000000002066F000-memory.dmp

Filesize
2.4MB

Download
memory/2848-184-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2848-25-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2848-165-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2856-3-0x0000000073EA0000-0x000000007458E000-memory.dmp

Filesize
6.9MB

Download
memory/2856-4-0x0000000073EAE000-0x0000000073EAF000-memory.dmp

Filesize
4KB

Download
memory/2856-26-0x0000000073EA0000-0x000000007458E000-memory.dmp

Filesize
6.9MB

Download
memory/2856-5-0x0000000073EA0000-0x000000007458E000-memory.dmp

Filesize
6.9MB

Download
memory/2856-0-0x0000000073EAE000-0x0000000073EAF000-memory.dmp

Filesize
4KB

Download
memory/2856-8-0x00000000006C0000-0x00000000006E2000-memory.dmp

Filesize
136KB

Download
memory/2856-2-0x0000000073EA0000-0x000000007458E000-memory.dmp

Filesize
6.9MB

Download
memory/2856-1-0x0000000000190000-0x000000000050E000-memory.dmp

Filesize
3.5MB

Download
memory/2856-7-0x0000000005930000-0x0000000005A4E000-memory.dmp

Filesize
1.1MB

Download
memory/2856-6-0x0000000005800000-0x000000000592A000-memory.dmp

Filesize
1.2MB

Download

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