Overview
overview
10Static
static
10Fri191454c4b4.exe
windows7_x64
8Fri191454c4b4.exe
windows10_x64
8Fri1921f7a9d3.exe
windows7_x64
10Fri1921f7a9d3.exe
windows10_x64
10Fri192902b3c24.exe
windows7_x64
10Fri192902b3c24.exe
windows10_x64
10Fri192b9eeaa03b.exe
windows7_x64
10Fri192b9eeaa03b.exe
windows10_x64
10Fri192c305b4a.exe
windows7_x64
10Fri192c305b4a.exe
windows10_x64
10Fri192f077...dd.exe
windows7_x64
10Fri192f077...dd.exe
windows10_x64
10Fri195cd4d...97.exe
windows7_x64
10Fri195cd4d...97.exe
windows10_x64
10Fri19870e2...44.exe
windows7_x64
10Fri19870e2...44.exe
windows10_x64
10Fri19927b4...d1.exe
windows7_x64
10Fri19927b4...d1.exe
windows10_x64
10Fri19ca03f05489b.exe
windows7_x64
6Fri19ca03f05489b.exe
windows10_x64
6Fri19d30056588.exe
windows7_x64
10Fri19d30056588.exe
windows10_x64
10libcurl.dll
windows7_x64
3libcurl.dll
windows10_x64
3libcurlpp.dll
windows7_x64
libcurlpp.dll
windows10_x64
3libgcc_s_dw2-1.dll
windows7_x64
libgcc_s_dw2-1.dll
windows10_x64
3libstdc++-6.dll
windows7_x64
3libstdc++-6.dll
windows10_x64
3libwinpthread-1.dll
windows7_x64
1libwinpthread-1.dll
windows10_x64
1Analysis
-
max time kernel
75s -
max time network
141s -
platform
windows10_x64 -
resource
win10v20210408 -
submitted
10-09-2021 21:28
Behavioral task
behavioral1
Sample
Fri191454c4b4.exe
Resource
win7v20210408
Behavioral task
behavioral2
Sample
Fri191454c4b4.exe
Resource
win10-en
Behavioral task
behavioral3
Sample
Fri1921f7a9d3.exe
Resource
win7v20210408
Behavioral task
behavioral4
Sample
Fri1921f7a9d3.exe
Resource
win10-en
Behavioral task
behavioral5
Sample
Fri192902b3c24.exe
Resource
win7-en
Behavioral task
behavioral6
Sample
Fri192902b3c24.exe
Resource
win10v20210408
Behavioral task
behavioral7
Sample
Fri192b9eeaa03b.exe
Resource
win7-en
Behavioral task
behavioral8
Sample
Fri192b9eeaa03b.exe
Resource
win10v20210408
Behavioral task
behavioral9
Sample
Fri192c305b4a.exe
Resource
win7-en
Behavioral task
behavioral10
Sample
Fri192c305b4a.exe
Resource
win10v20210408
Behavioral task
behavioral11
Sample
Fri192f077acf656dd.exe
Resource
win7-en
Behavioral task
behavioral12
Sample
Fri192f077acf656dd.exe
Resource
win10-en
Behavioral task
behavioral13
Sample
Fri195cd4dbfdf37897.exe
Resource
win7v20210408
Behavioral task
behavioral14
Sample
Fri195cd4dbfdf37897.exe
Resource
win10-en
Behavioral task
behavioral15
Sample
Fri19870e2febf5544.exe
Resource
win7v20210408
Behavioral task
behavioral16
Sample
Fri19870e2febf5544.exe
Resource
win10-en
Behavioral task
behavioral17
Sample
Fri19927b4fe38a9d1.exe
Resource
win7v20210408
Behavioral task
behavioral18
Sample
Fri19927b4fe38a9d1.exe
Resource
win10-en
Behavioral task
behavioral19
Sample
Fri19ca03f05489b.exe
Resource
win7-en
Behavioral task
behavioral20
Sample
Fri19ca03f05489b.exe
Resource
win10v20210408
Behavioral task
behavioral21
Sample
Fri19d30056588.exe
Resource
win7-en
Behavioral task
behavioral22
Sample
Fri19d30056588.exe
Resource
win10v20210408
Behavioral task
behavioral23
Sample
libcurl.dll
Resource
win7-en
Behavioral task
behavioral24
Sample
libcurl.dll
Resource
win10v20210408
Behavioral task
behavioral25
Sample
libcurlpp.dll
Resource
win7-en
Behavioral task
behavioral26
Sample
libcurlpp.dll
Resource
win10v20210408
Behavioral task
behavioral27
Sample
libgcc_s_dw2-1.dll
Resource
win7-en
Behavioral task
behavioral28
Sample
libgcc_s_dw2-1.dll
Resource
win10-en
Behavioral task
behavioral29
Sample
libstdc++-6.dll
Resource
win7v20210408
Behavioral task
behavioral30
Sample
libstdc++-6.dll
Resource
win10-en
Behavioral task
behavioral31
Sample
libwinpthread-1.dll
Resource
win7v20210408
Behavioral task
behavioral32
Sample
libwinpthread-1.dll
Resource
win10-en
General
-
Target
Fri192902b3c24.exe
-
Size
607KB
-
MD5
a0105d243e43fe20fcfebfbe7530aaf2
-
SHA1
bfc1be1630bd4177d19c76714c95f48d8ba33c14
-
SHA256
496f67cf5c0907c1799fe892f3ce8c406c9b47256b8bc3d4c68032b4b9f99ea1
-
SHA512
800a968962eec1c17694bbb59ba3faf03c8e5a35a685d3282840c6a9914c71604243eb09ba49ee2b93d60b970ee6797ee5ffcdecbe84bfce59e251517cbad554
Malware Config
Extracted
vidar
40.5
706
https://gheorghip.tumblr.com/
-
profile_id
706
Signatures
-
suricata: ET MALWARE Suspicious Zipped Filename in Outbound POST Request (Passwords.txt)
suricata: ET MALWARE Suspicious Zipped Filename in Outbound POST Request (Passwords.txt)
-
suricata: ET MALWARE Vidar/Arkei Stealer Client Data Upload
suricata: ET MALWARE Vidar/Arkei Stealer Client Data Upload
-
Vidar Stealer 2 IoCs
Processes:
resource yara_rule behavioral6/memory/3880-116-0x0000000003F40000-0x0000000004011000-memory.dmp family_vidar behavioral6/memory/3880-117-0x0000000000400000-0x00000000021B7000-memory.dmp family_vidar -
Downloads MZ/PE file
-
Loads dropped DLL 2 IoCs
Processes:
Fri192902b3c24.exepid process 3880 Fri192902b3c24.exe 3880 Fri192902b3c24.exe -
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
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Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
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Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
Fri192902b3c24.exedescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString Fri192902b3c24.exe Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 Fri192902b3c24.exe -
Delays execution with timeout.exe 1 IoCs
Processes:
timeout.exepid process 1092 timeout.exe -
Kills process with taskkill 1 IoCs
Processes:
taskkill.exepid process 900 taskkill.exe -
Processes:
Fri192902b3c24.exedescription ioc process Set value (data) \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349\Blob = 5c000000010000000400000000080000090000000100000054000000305206082b0601050507030206082b06010505070303060a2b0601040182370a030406082b0601050507030406082b0601050507030606082b0601050507030706082b0601050507030106082b0601050507030853000000010000004300000030413022060c2b06010401b231010201050130123010060a2b0601040182373c0101030200c0301b060567810c010330123010060a2b0601040182373c0101030200c0620000000100000020000000d7a7a0fb5d7e2731d771e9484ebcdef71d5f0c3e0a2948782bc83ee0ea699ef40b000000010000001c0000005300650063007400690067006f002000280041004100410029000000140000000100000014000000a0110a233e96f107ece2af29ef82a57fd030a4b41d00000001000000100000002e0d6875874a44c820912e85e964cfdb030000000100000014000000d1eb23a46d17d68fd92564c2f1f1601764d8e349200000000100000036040000308204323082031aa003020102020101300d06092a864886f70d0101050500307b310b3009060355040613024742311b301906035504080c1247726561746572204d616e636865737465723110300e06035504070c0753616c666f7264311a3018060355040a0c11436f6d6f646f204341204c696d697465643121301f06035504030c18414141204365727469666963617465205365727669636573301e170d3034303130313030303030305a170d3238313233313233353935395a307b310b3009060355040613024742311b301906035504080c1247726561746572204d616e636865737465723110300e06035504070c0753616c666f7264311a3018060355040a0c11436f6d6f646f204341204c696d697465643121301f06035504030c1841414120436572746966696361746520536572766963657330820122300d06092a864886f70d01010105000382010f003082010a0282010100be409df46ee1ea76871c4d45448ebe46c883069dc12afe181f8ee402faf3ab5d508a16310b9a06d0c57022cd492d5463ccb66e68460b53eacb4c24c0bc724eeaf115aef4549a120ac37ab23360e2da8955f32258f3dedccfef8386a28c944f9f68f29890468427c776bfe3cc352c8b5e07646582c048b0a891f9619f762050a891c766b5eb78620356f08a1a13ea31a31ea099fd38f6f62732586f07f56bb8fb142bafb7aaccd6635f738cda0599a838a8cb17783651ace99ef4783a8dcf0fd942e2980cab2f9f0e01deef9f9949f12ddfac744d1b98b547c5e529d1f99018c7629cbe83c7267b3e8a25c7c0dd9de6356810209d8fd8ded2c3849c0d5ee82fc90203010001a381c03081bd301d0603551d0e04160414a0110a233e96f107ece2af29ef82a57fd030a4b4300e0603551d0f0101ff040403020106300f0603551d130101ff040530030101ff307b0603551d1f047430723038a036a0348632687474703a2f2f63726c2e636f6d6f646f63612e636f6d2f414141436572746966696361746553657276696365732e63726c3036a034a0328630687474703a2f2f63726c2e636f6d6f646f2e6e65742f414141436572746966696361746553657276696365732e63726c300d06092a864886f70d010105050003820101000856fc02f09be8ffa4fad67bc64480ce4fc4c5f60058cca6b6bc1449680476e8e6ee5dec020f60d68d50184f264e01e3e6b0a5eebfbc745441bffdfc12b8c74f5af48960057f60b7054af3f6f1c2bfc4b97486b62d7d6bccd2f346dd2fc6e06ac3c334032c7d96dd5ac20ea70a99c1058bab0c2ff35c3acf6c37550987de53406c58effcb6ab656e04f61bdc3ce05a15c69ed9f15948302165036cece92173ec9b03a1e037ada015188ffaba02cea72ca910132cd4e50826ab229760f8905e74d4a29a53bdf2a968e0a26ec2d76cb1a30f9ebfeb68e756f2aef2e32b383a0981b56b85d7be2ded3f1ab7b263e2f5622c82d46a004150f139839f95e93696986e Fri192902b3c24.exe Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349 Fri192902b3c24.exe -
Suspicious behavior: EnumeratesProcesses 8 IoCs
Processes:
Fri192902b3c24.exepid process 3880 Fri192902b3c24.exe 3880 Fri192902b3c24.exe 3880 Fri192902b3c24.exe 3880 Fri192902b3c24.exe 3880 Fri192902b3c24.exe 3880 Fri192902b3c24.exe 3880 Fri192902b3c24.exe 3880 Fri192902b3c24.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
taskkill.exedescription pid process Token: SeDebugPrivilege 900 taskkill.exe -
Suspicious use of WriteProcessMemory 9 IoCs
Processes:
Fri192902b3c24.execmd.exedescription pid process target process PID 3880 wrote to memory of 544 3880 Fri192902b3c24.exe cmd.exe PID 3880 wrote to memory of 544 3880 Fri192902b3c24.exe cmd.exe PID 3880 wrote to memory of 544 3880 Fri192902b3c24.exe cmd.exe PID 544 wrote to memory of 900 544 cmd.exe taskkill.exe PID 544 wrote to memory of 900 544 cmd.exe taskkill.exe PID 544 wrote to memory of 900 544 cmd.exe taskkill.exe PID 544 wrote to memory of 1092 544 cmd.exe timeout.exe PID 544 wrote to memory of 1092 544 cmd.exe timeout.exe PID 544 wrote to memory of 1092 544 cmd.exe timeout.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\Fri192902b3c24.exe"C:\Users\Admin\AppData\Local\Temp\Fri192902b3c24.exe"1⤵
- Loads dropped DLL
- Checks processor information in registry
- Modifies system certificate store
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c taskkill /im Fri192902b3c24.exe /f & timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\Temp\Fri192902b3c24.exe" & del C:\ProgramData\*.dll & exit2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\taskkill.exetaskkill /im Fri192902b3c24.exe /f3⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\timeout.exetimeout /t 63⤵
- Delays execution with timeout.exe
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
-
C:\ProgramData\freebl3.dllMD5
ef2834ac4ee7d6724f255beaf527e635
SHA15be8c1e73a21b49f353c2ecfa4108e43a883cb7b
SHA256a770ecba3b08bbabd0a567fc978e50615f8b346709f8eb3cfacf3faab24090ba
SHA512c6ea0e4347cbd7ef5e80ae8c0afdca20ea23ac2bdd963361dfaf562a9aed58dcbc43f89dd826692a064d76c3f4b3e92361af7b79a6d16a75d9951591ae3544d2
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C:\ProgramData\mozglue.dllMD5
8f73c08a9660691143661bf7332c3c27
SHA137fa65dd737c50fda710fdbde89e51374d0c204a
SHA2563fe6b1c54b8cf28f571e0c5d6636b4069a8ab00b4f11dd842cfec00691d0c9cd
SHA5120042ecf9b3571bb5eba2de893e8b2371df18f7c5a589f52ee66e4bfbaa15a5b8b7cc6a155792aaa8988528c27196896d5e82e1751c998bacea0d92395f66ad89
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C:\ProgramData\msvcp140.dllMD5
109f0f02fd37c84bfc7508d4227d7ed5
SHA1ef7420141bb15ac334d3964082361a460bfdb975
SHA256334e69ac9367f708ce601a6f490ff227d6c20636da5222f148b25831d22e13d4
SHA51246eb62b65817365c249b48863d894b4669e20fcb3992e747cd5c9fdd57968e1b2cf7418d1c9340a89865eadda362b8db51947eb4427412eb83b35994f932fd39
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C:\ProgramData\nss3.dllMD5
bfac4e3c5908856ba17d41edcd455a51
SHA18eec7e888767aa9e4cca8ff246eb2aacb9170428
SHA256e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78
SHA5122565bab776c4d732ffb1f9b415992a4c65b81bcd644a9a1df1333a269e322925fc1df4f76913463296efd7c88ef194c3056de2f1ca1357d7b5fe5ff0da877a66
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C:\ProgramData\softokn3.dllMD5
a2ee53de9167bf0d6c019303b7ca84e5
SHA12a3c737fa1157e8483815e98b666408a18c0db42
SHA25643536adef2ddcc811c28d35fa6ce3031029a2424ad393989db36169ff2995083
SHA51245b56432244f86321fa88fbcca6a0d2a2f7f4e0648c1d7d7b1866adc9daa5eddd9f6bb73662149f279c9ab60930dad1113c8337cb5e6ec9eed5048322f65f7d8
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C:\ProgramData\vcruntime140.dllMD5
7587bf9cb4147022cd5681b015183046
SHA1f2106306a8f6f0da5afb7fc765cfa0757ad5a628
SHA256c40bb03199a2054dabfc7a8e01d6098e91de7193619effbd0f142a7bf031c14d
SHA5120b63e4979846ceba1b1ed8470432ea6aa18cca66b5f5322d17b14bc0dfa4b2ee09ca300a016e16a01db5123e4e022820698f46d9bad1078bd24675b4b181e91f
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\ProgramData\mozglue.dllMD5
8f73c08a9660691143661bf7332c3c27
SHA137fa65dd737c50fda710fdbde89e51374d0c204a
SHA2563fe6b1c54b8cf28f571e0c5d6636b4069a8ab00b4f11dd842cfec00691d0c9cd
SHA5120042ecf9b3571bb5eba2de893e8b2371df18f7c5a589f52ee66e4bfbaa15a5b8b7cc6a155792aaa8988528c27196896d5e82e1751c998bacea0d92395f66ad89
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\ProgramData\nss3.dllMD5
bfac4e3c5908856ba17d41edcd455a51
SHA18eec7e888767aa9e4cca8ff246eb2aacb9170428
SHA256e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78
SHA5122565bab776c4d732ffb1f9b415992a4c65b81bcd644a9a1df1333a269e322925fc1df4f76913463296efd7c88ef194c3056de2f1ca1357d7b5fe5ff0da877a66
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memory/544-120-0x0000000000000000-mapping.dmp
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memory/900-121-0x0000000000000000-mapping.dmp
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memory/1092-122-0x0000000000000000-mapping.dmp
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memory/3880-116-0x0000000003F40000-0x0000000004011000-memory.dmpFilesize
836KB
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memory/3880-117-0x0000000000400000-0x00000000021B7000-memory.dmpFilesize
29.7MB