vidar | 3d353f9cd17195c5badec796dc3d37eaecc509015a84ca649ff7ea11e8f5beeb

General

Target
481AA117267C8E6E94E021A682577AAA.exe
Size 590KB
Sample210325-cvsnbtmcn6
SHA256 3d353f9cd17195c5badec796dc3d37eaecc509015a84ca649ff7ea11e8f5beeb
MD5 481aa117267c8e6e94e021a682577aaa
SHA1 2429878919168e882b8e349b97ed2b156be91d3d
SHA512 d5a023b13d8c87ca0501f1ba0c4d3fb5c897a72866c5dca9bc151559b2a325d4bcd83c528b1614a42b5f47c17dfd53abf3f3f0d33ee76e8b22151ddc781c2987
MD5 SHA1 SHA512

Score

10^/10

vidar discovery spyware stealer

Malware Config

Signatures

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

Deletes itself 1 IoCs

pid	Process
1172	cmd.exe

Loads dropped DLL 4 IoCs

pid	Process
1056	481AA117267C8E6E94E021A682577AAA.exe
1056	481AA117267C8E6E94E021A682577AAA.exe
1056	481AA117267C8E6E94E021A682577AAA.exe
1056	481AA117267C8E6E94E021A682577AAA.exe

Reads local data of messenger clients 2 TTPs
Infostealers often target stored data of messaging applications, which can include saved credentials and account information.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081
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
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

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	481AA117267C8E6E94E021A682577AAA.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	481AA117267C8E6E94E021A682577AAA.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
568	timeout.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
1036	taskkill.exe

Modifies system certificate store 2 TTPs 2 IoCs

evasion spyware trojan

Install Root Certificate

T1130

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\A8985D3A65E5E5C4B2D7D66D40C6DD2FB19C5436	481AA117267C8E6E94E021A682577AAA.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\A8985D3A65E5E5C4B2D7D66D40C6DD2FB19C5436\Blob = 04000000010000001000000079e4a9840d7d3a96d7c04fe2434c892e0f0000000100000014000000b34ddd372ed92e8f2abfbb9e20a9d31f204f194b090000000100000034000000303206082b0601050507030106082b0601050507030206082b0601050507030406082b0601050507030306082b0601050507030814000000010000001400000003de503556d14cbb66f0a3e21b1bc397b23dd1550b00000001000000120000004400690067006900430065007200740000001d000000010000001000000059779e39e21a2e3dfced6857ed5c5fd9030000000100000014000000a8985d3a65e5e5c4b2d7d66d40c6dd2fb19c54361900000001000000100000000f3a0527d242de2dc98e5cfcb1e991ee2000000001000000b3030000308203af30820297a0030201020210083be056904246b1a1756ac95991c74a300d06092a864886f70d01010505003061310b300906035504061302555331153013060355040a130c446967694365727420496e6331193017060355040b13107777772e64696769636572742e636f6d3120301e06035504031317446967694365727420476c6f62616c20526f6f74204341301e170d3036313131303030303030305a170d3331313131303030303030305a3061310b300906035504061302555331153013060355040a130c446967694365727420496e6331193017060355040b13107777772e64696769636572742e636f6d3120301e06035504031317446967694365727420476c6f62616c20526f6f7420434130820122300d06092a864886f70d01010105000382010f003082010a0282010100e23be11172dea8a4d3a357aa50a28f0b7790c9a2a5ee12ce965b010920cc0193a74e30b753f743c46900579de28d22dd870640008109cece1b83bfdfcd3b7146e2d666c705b37627168f7b9e1e957deeb748a308dad6af7a0c3906657f4a5d1fbc17f8abbeee28d7747f7a78995985686e5c23324bbf4ec0e85a6de370bf7710bffc01f685d9a844105832a97518d5d1a2be47e2276af49a33f84908608bd45fb43a84bfa1aa4a4c7d3ecf4f5f6c765ea04b37919edc22e66dce141a8e6acbfecdb3146417c75b299e32bff2eefad30b42d4abb74132da0cd4eff881d5bb8d583fb51be84928a270da3104ddf7b216f24c0a4e07a8ed4a3d5eb57fa390c3af270203010001a3633061300e0603551d0f0101ff040403020186300f0603551d130101ff040530030101ff301d0603551d0e0416041403de503556d14cbb66f0a3e21b1bc397b23dd155301f0603551d2304183016801403de503556d14cbb66f0a3e21b1bc397b23dd155300d06092a864886f70d01010505000382010100cb9c37aa4813120afadd449c4f52b0f4dfae04f5797908a32418fc4b2b84c02db9d5c7fef4c11f58cbb86d9c7a74e79829ab11b5e370a0a1cd4c8899938c9170e2ab0f1cbe93a9ff63d5e40760d3a3bf9d5b09f1d58ee353f48e63fa3fa7dbb466df6266d6d16e418df22db5ea774a9f9d58e22b59c04023ed2d2882453e7954922698e08048a837eff0d6796016deace80ecd6eac4417382f49dae1453e2ab93653cf3a5006f72ee8c457496c612118d504ad783c2c3a806ba7ebaf1514e9d889c1b9386ce2916c8aff64b977255730c01b24a3e1dce9df477cb5b424080530ec2dbd0bbf45bf50b9a9f3eb980112adc888c698345f8d0a3cc6e9d595956dde	481AA117267C8E6E94E021A682577AAA.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1056	481AA117267C8E6E94E021A682577AAA.exe
1056	481AA117267C8E6E94E021A682577AAA.exe
1056	481AA117267C8E6E94E021A682577AAA.exe
1056	481AA117267C8E6E94E021A682577AAA.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1036	taskkill.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1056 wrote to memory of 1172	1056	481AA117267C8E6E94E021A682577AAA.exe	31
PID 1056 wrote to memory of 1172	1056	481AA117267C8E6E94E021A682577AAA.exe	31
PID 1056 wrote to memory of 1172	1056	481AA117267C8E6E94E021A682577AAA.exe	31
PID 1056 wrote to memory of 1172	1056	481AA117267C8E6E94E021A682577AAA.exe	31
PID 1172 wrote to memory of 1036	1172	cmd.exe	33
PID 1172 wrote to memory of 1036	1172	cmd.exe	33
PID 1172 wrote to memory of 1036	1172	cmd.exe	33
PID 1172 wrote to memory of 1036	1172	cmd.exe	33
PID 1172 wrote to memory of 568	1172	cmd.exe	35
PID 1172 wrote to memory of 568	1172	cmd.exe	35
PID 1172 wrote to memory of 568	1172	cmd.exe	35
PID 1172 wrote to memory of 568	1172	cmd.exe	35

C:\Users\Admin\AppData\Local\Temp\481AA117267C8E6E94E021A682577AAA.exe
"C:\Users\Admin\AppData\Local\Temp\481AA117267C8E6E94E021A682577AAA.exe"
1⤵
- Loads dropped DLL
- Checks processor information in registry
- Modifies system certificate store
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1056
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im 481AA117267C8E6E94E021A682577AAA.exe /f & timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\Temp\481AA117267C8E6E94E021A682577AAA.exe" & del C:\ProgramData\*.dll & exit
  2⤵
  - Deletes itself
  - Suspicious use of WriteProcessMemory
  PID:1172
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im 481AA117267C8E6E94E021A682577AAA.exe /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:1036
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 6
    3⤵
    - Delays execution with timeout.exe
    PID:568