vidar | 4227ee74e68b799efeb3613493f4814a81e16fec32c88bcc3fdcc7eae35b60bc

General

Target
f1e89356f7a21887e4b5db1160717abf.exe
Size 581KB
Sample210730-w7ctrj2r2s
SHA256 4227ee74e68b799efeb3613493f4814a81e16fec32c88bcc3fdcc7eae35b60bc
MD5 f1e89356f7a21887e4b5db1160717abf
SHA1 ff7409ec73309460650dccc2e44efb8595c246d7
SHA512 891734162b8f4b5c1d9cc08cc9c8140edbdf8af2ca4b0819a860cc1c1887d041e25db1b4282069ebeea6d764846d5d20ba3e836d923b1e3886f468236b244e51
MD5 SHA1 SHA512

Score

10^/10

vidar 921 discovery spyware stealer suricata

Malware Config

Extracted

Family

vidar

Version

39.8

Botnet

921

C2

https://xeronxikxxx.tumblr.com/

Attributes

profile_id
921

Signatures

Vidar
Vidar is an infostealer based on Arkei stealer.
stealer vidar
suricata: ET MALWARE Suspicious Zipped Filename in Outbound POST Request (Passwords.txt)
suricata
suricata: ET MALWARE Vidar/Arkei Stealer Client Data Upload
suricata
suricata: ET MALWARE Vidar/Arkei/Megumin/Oski Stealer Data Exfil
suricata

Vidar Stealer 3 IoCs

stealer

resource	yara_rule
behavioral1/memory/1404-64-0x0000000000400000-0x00000000004A1000-memory.dmp	family_vidar
behavioral1/memory/1404-65-0x000000000046B76D-mapping.dmp	family_vidar
behavioral1/memory/1404-67-0x0000000000400000-0x00000000004A1000-memory.dmp	family_vidar

Downloads MZ/PE file

Deletes itself 1 IoCs

pid	Process
820	cmd.exe

Loads dropped DLL 4 IoCs

pid	Process
1404	f1e89356f7a21887e4b5db1160717abf.exe
1404	f1e89356f7a21887e4b5db1160717abf.exe
1404	f1e89356f7a21887e4b5db1160717abf.exe
1404	f1e89356f7a21887e4b5db1160717abf.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 360 set thread context of 1404	360	f1e89356f7a21887e4b5db1160717abf.exe	29

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	f1e89356f7a21887e4b5db1160717abf.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	f1e89356f7a21887e4b5db1160717abf.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
600	timeout.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
620	taskkill.exe

Modifies system certificate store 2 TTPs 3 IoCs

evasion spyware trojan

Install Root Certificate

T1130

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349	f1e89356f7a21887e4b5db1160717abf.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349\Blob = 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	f1e89356f7a21887e4b5db1160717abf.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349\Blob = 1900000001000000100000002aa1c05e2ae606f198c2c5e937c97aa2030000000100000014000000d1eb23a46d17d68fd92564c2f1f1601764d8e3491d00000001000000100000002e0d6875874a44c820912e85e964cfdb140000000100000014000000a0110a233e96f107ece2af29ef82a57fd030a4b40b00000001000000180000004300b7004f00b7004d00b7004f00b7004400b7004f00000053000000010000002600000030243022060c2b06010401b231010201050130123010060a2b0601040182373c0101030200c0090000000100000034000000303206082b0601050507030106082b0601050507030206082b0601050507030406082b0601050507030306082b060105050703080f00000001000000140000003e8e6487f8fd27d322a269a71edaac5d57811286200000000100000036040000308204323082031aa003020102020101300d06092a864886f70d0101050500307b310b3009060355040613024742311b301906035504080c1247726561746572204d616e636865737465723110300e06035504070c0753616c666f7264311a3018060355040a0c11436f6d6f646f204341204c696d697465643121301f06035504030c18414141204365727469666963617465205365727669636573301e170d3034303130313030303030305a170d3238313233313233353935395a307b310b3009060355040613024742311b301906035504080c1247726561746572204d616e636865737465723110300e06035504070c0753616c666f7264311a3018060355040a0c11436f6d6f646f204341204c696d697465643121301f06035504030c1841414120436572746966696361746520536572766963657330820122300d06092a864886f70d01010105000382010f003082010a0282010100be409df46ee1ea76871c4d45448ebe46c883069dc12afe181f8ee402faf3ab5d508a16310b9a06d0c57022cd492d5463ccb66e68460b53eacb4c24c0bc724eeaf115aef4549a120ac37ab23360e2da8955f32258f3dedccfef8386a28c944f9f68f29890468427c776bfe3cc352c8b5e07646582c048b0a891f9619f762050a891c766b5eb78620356f08a1a13ea31a31ea099fd38f6f62732586f07f56bb8fb142bafb7aaccd6635f738cda0599a838a8cb17783651ace99ef4783a8dcf0fd942e2980cab2f9f0e01deef9f9949f12ddfac744d1b98b547c5e529d1f99018c7629cbe83c7267b3e8a25c7c0dd9de6356810209d8fd8ded2c3849c0d5ee82fc90203010001a381c03081bd301d0603551d0e04160414a0110a233e96f107ece2af29ef82a57fd030a4b4300e0603551d0f0101ff040403020106300f0603551d130101ff040530030101ff307b0603551d1f047430723038a036a0348632687474703a2f2f63726c2e636f6d6f646f63612e636f6d2f414141436572746966696361746553657276696365732e63726c3036a034a0328630687474703a2f2f63726c2e636f6d6f646f2e6e65742f414141436572746966696361746553657276696365732e63726c300d06092a864886f70d010105050003820101000856fc02f09be8ffa4fad67bc64480ce4fc4c5f60058cca6b6bc1449680476e8e6ee5dec020f60d68d50184f264e01e3e6b0a5eebfbc745441bffdfc12b8c74f5af48960057f60b7054af3f6f1c2bfc4b97486b62d7d6bccd2f346dd2fc6e06ac3c334032c7d96dd5ac20ea70a99c1058bab0c2ff35c3acf6c37550987de53406c58effcb6ab656e04f61bdc3ce05a15c69ed9f15948302165036cece92173ec9b03a1e037ada015188ffaba02cea72ca910132cd4e50826ab229760f8905e74d4a29a53bdf2a968e0a26ec2d76cb1a30f9ebfeb68e756f2aef2e32b383a0981b56b85d7be2ded3f1ab7b263e2f5622c82d46a004150f139839f95e93696986e	f1e89356f7a21887e4b5db1160717abf.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1404	f1e89356f7a21887e4b5db1160717abf.exe
1404	f1e89356f7a21887e4b5db1160717abf.exe
1404	f1e89356f7a21887e4b5db1160717abf.exe
1404	f1e89356f7a21887e4b5db1160717abf.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	360	f1e89356f7a21887e4b5db1160717abf.exe
Token: SeDebugPrivilege	620	taskkill.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 360 wrote to memory of 1404	360	f1e89356f7a21887e4b5db1160717abf.exe	29
PID 360 wrote to memory of 1404	360	f1e89356f7a21887e4b5db1160717abf.exe	29
PID 360 wrote to memory of 1404	360	f1e89356f7a21887e4b5db1160717abf.exe	29
PID 360 wrote to memory of 1404	360	f1e89356f7a21887e4b5db1160717abf.exe	29
PID 360 wrote to memory of 1404	360	f1e89356f7a21887e4b5db1160717abf.exe	29
PID 360 wrote to memory of 1404	360	f1e89356f7a21887e4b5db1160717abf.exe	29
PID 360 wrote to memory of 1404	360	f1e89356f7a21887e4b5db1160717abf.exe	29
PID 360 wrote to memory of 1404	360	f1e89356f7a21887e4b5db1160717abf.exe	29
PID 360 wrote to memory of 1404	360	f1e89356f7a21887e4b5db1160717abf.exe	29
PID 1404 wrote to memory of 820	1404	f1e89356f7a21887e4b5db1160717abf.exe	32
PID 1404 wrote to memory of 820	1404	f1e89356f7a21887e4b5db1160717abf.exe	32
PID 1404 wrote to memory of 820	1404	f1e89356f7a21887e4b5db1160717abf.exe	32
PID 1404 wrote to memory of 820	1404	f1e89356f7a21887e4b5db1160717abf.exe	32
PID 820 wrote to memory of 620	820	cmd.exe	34
PID 820 wrote to memory of 620	820	cmd.exe	34
PID 820 wrote to memory of 620	820	cmd.exe	34
PID 820 wrote to memory of 620	820	cmd.exe	34
PID 820 wrote to memory of 600	820	cmd.exe	36
PID 820 wrote to memory of 600	820	cmd.exe	36
PID 820 wrote to memory of 600	820	cmd.exe	36
PID 820 wrote to memory of 600	820	cmd.exe	36

C:\Users\Admin\AppData\Local\Temp\f1e89356f7a21887e4b5db1160717abf.exe
"C:\Users\Admin\AppData\Local\Temp\f1e89356f7a21887e4b5db1160717abf.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:360
- C:\Users\Admin\AppData\Local\Temp\f1e89356f7a21887e4b5db1160717abf.exe
  C:\Users\Admin\AppData\Local\Temp\f1e89356f7a21887e4b5db1160717abf.exe
  2⤵
  - Loads dropped DLL
  - Checks processor information in registry
  - Modifies system certificate store
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:1404
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /c taskkill /im f1e89356f7a21887e4b5db1160717abf.exe /f & timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\Temp\f1e89356f7a21887e4b5db1160717abf.exe" & del C:\ProgramData\*.dll & exit
    3⤵
    - Deletes itself
    - Suspicious use of WriteProcessMemory
    PID:820
  - - C:\Windows\SysWOW64\taskkill.exe
      taskkill /im f1e89356f7a21887e4b5db1160717abf.exe /f
      4⤵
      Kills process with taskkill
      Suspicious use of AdjustPrivilegeToken
      PID:620
  - - C:\Windows\SysWOW64\timeout.exe
      timeout /t 6
      4⤵
      Delays execution with timeout.exe
      PID:600