vidar | 9d15c54e65741f34b06c222b5c115f51eb42f3b7085fc6af0e85132c2c299e5e

General

Target

setup.exe
Size

473KB
MD5

a2968948684f7b6a4f35a236fa4b5c3f
SHA1

1870e0232030e0e8114f842e652d3d43629d16d9
SHA256

9d15c54e65741f34b06c222b5c115f51eb42f3b7085fc6af0e85132c2c299e5e
SHA512

7cd92011c2e3764755590767c39220609a19f63bb21034422addfc1bb222ccfb43cacfe33ac45552056885997d572b54c49d2d245e712db6eb6f70451bff8f0e
SSDEEP

12288:GHWwEHJPmCA24KCtvyljdufthYaNmMY/Cjb:GHWwWPmvQCtv05IPmMY/C/

Score

10^/10

vidar spyware stealer upx

Malware Config

Signatures

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

Executes dropped EXE 1 IoCs

pid	Process
4460	84028974571232104121.exe

Loads dropped DLL 2 IoCs

pid	Process
3508	MSBuild.exe
3508	MSBuild.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

UPX packed file 5 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/files/0x0006000000023171-227.dat	upx
behavioral2/files/0x0006000000023171-232.dat	upx
behavioral2/files/0x0006000000023171-230.dat	upx
behavioral2/memory/4460-233-0x00000000000A0000-0x0000000000EFF000-memory.dmp	upx
behavioral2/memory/4460-234-0x00000000000A0000-0x0000000000EFF000-memory.dmp	upx

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

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4232 set thread context of 3508	4232	setup.exe	87

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
3460	timeout.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3508	MSBuild.exe
3508	MSBuild.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 4232 wrote to memory of 3508	4232	setup.exe	87
PID 4232 wrote to memory of 3508	4232	setup.exe	87
PID 4232 wrote to memory of 3508	4232	setup.exe	87
PID 4232 wrote to memory of 3508	4232	setup.exe	87
PID 4232 wrote to memory of 3508	4232	setup.exe	87
PID 3508 wrote to memory of 4460	3508	MSBuild.exe	91
PID 3508 wrote to memory of 4460	3508	MSBuild.exe	91
PID 3508 wrote to memory of 2368	3508	MSBuild.exe	94
PID 3508 wrote to memory of 2368	3508	MSBuild.exe	94
PID 3508 wrote to memory of 2368	3508	MSBuild.exe	94
PID 2368 wrote to memory of 3460	2368	cmd.exe	96
PID 2368 wrote to memory of 3460	2368	cmd.exe	96
PID 2368 wrote to memory of 3460	2368	cmd.exe	96

C:\Users\Admin\AppData\Local\Temp\setup.exe
"C:\Users\Admin\AppData\Local\Temp\setup.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4232
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
  2⤵
  - Loads dropped DLL
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:3508
- - C:\ProgramData\84028974571232104121.exe
    "C:\ProgramData\84028974571232104121.exe"
    3⤵
    - Executes dropped EXE
    PID:4460
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /c timeout /t 6 & del /f /q "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe" & exit
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2368
  - - C:\Windows\SysWOW64\timeout.exe
      timeout /t 6
      4⤵
      Delays execution with timeout.exe
      PID:3460

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

3

T1081

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

3

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\ProgramData\84028974571232104121.exe

Filesize
4.3MB

MD5
57d5e9e2df1051980ce3579bb35a7182

SHA1
860d8a7afa4d53a616fb052ab38157a8936ff82b

SHA256
e61ded56075b754b1623dc3b28f673d7169293fbada5c887e6236b77c8f435c9

SHA512
58d53b3b0b00159638b2c564972c1a9842e284437bbf42130574d32bf439fa70ab9729efc33fdf6940aedec67b3f59b74f88c053537b49c2ae6ba95adadcf97a

Download Submit
C:\ProgramData\84028974571232104121.exe

Filesize
4.3MB

MD5
57d5e9e2df1051980ce3579bb35a7182

SHA1
860d8a7afa4d53a616fb052ab38157a8936ff82b

SHA256
e61ded56075b754b1623dc3b28f673d7169293fbada5c887e6236b77c8f435c9

SHA512
58d53b3b0b00159638b2c564972c1a9842e284437bbf42130574d32bf439fa70ab9729efc33fdf6940aedec67b3f59b74f88c053537b49c2ae6ba95adadcf97a

Download Submit
C:\ProgramData\84028974571232104121.exe

Filesize
4.3MB

MD5
57d5e9e2df1051980ce3579bb35a7182

SHA1
860d8a7afa4d53a616fb052ab38157a8936ff82b

SHA256
e61ded56075b754b1623dc3b28f673d7169293fbada5c887e6236b77c8f435c9

SHA512
58d53b3b0b00159638b2c564972c1a9842e284437bbf42130574d32bf439fa70ab9729efc33fdf6940aedec67b3f59b74f88c053537b49c2ae6ba95adadcf97a

Download Submit
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/3508-134-0x0000000000400000-0x0000000000471000-memory.dmp

Filesize
452KB

Download
memory/3508-140-0x0000000000400000-0x0000000000471000-memory.dmp

Filesize
452KB

Download
memory/3508-150-0x0000000061E00000-0x0000000061EF3000-memory.dmp

Filesize
972KB

Download
memory/3508-218-0x0000000000400000-0x0000000000471000-memory.dmp

Filesize
452KB

Download
memory/3508-231-0x0000000000400000-0x0000000000471000-memory.dmp

Filesize
452KB

Download
memory/4460-233-0x00000000000A0000-0x0000000000EFF000-memory.dmp

Filesize
14.4MB

Download
memory/4460-234-0x00000000000A0000-0x0000000000EFF000-memory.dmp

Filesize
14.4MB

Download

Analysis

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