Analysis
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max time kernel
42s -
max time network
113s -
platform
windows7_x64 -
resource
win7v20210410 -
submitted
06-05-2021 14:03
Static task
static1
Behavioral task
behavioral1
Sample
9a4b975c_by_Libranalysis.exe
Resource
win7v20210410
Behavioral task
behavioral2
Sample
9a4b975c_by_Libranalysis.exe
Resource
win10v20210408
General
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Target
9a4b975c_by_Libranalysis.exe
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Size
33KB
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MD5
9a4b975c10dfc590337ee6d960aa4a02
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SHA1
15be16213deac30838b2850d866bdf5382402e2d
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SHA256
edb5b2e40ba1596106785ac718cbb576310e3c05674a5db31189f4a1dc753677
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SHA512
d3bdfc2d3a9d06050ac1f6e38b7bb842033d6658e61be891ba6581d0d9a735bc9f72ac341a0531efa8e68dfa29f205dfd7785c9d330641cbc493f7c790f4bcfb
Malware Config
Extracted
oski
203.159.80.72
Extracted
snakekeylogger
https://api.telegram.org/bot1761516426:AAE3Juu_v6fG9Gy1S33LdTvyz85ua-duZsk/sendMessage?chat_id=1727399585
Signatures
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Oski
Oski is an infostealer targeting browser data, crypto wallets.
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Snake Keylogger
Keylogger and Infostealer first seen in November 2020.
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Snake Keylogger Payload 3 IoCs
Processes:
resource yara_rule behavioral1/memory/1728-82-0x0000000000400000-0x000000000046A000-memory.dmp family_snakekeylogger behavioral1/memory/1728-83-0x000000000046446E-mapping.dmp family_snakekeylogger behavioral1/memory/1728-86-0x0000000000400000-0x000000000046A000-memory.dmp family_snakekeylogger -
Downloads MZ/PE file
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Executes dropped EXE 2 IoCs
Processes:
233085788799.exe233085788799.exepid process 640 233085788799.exe 1728 233085788799.exe -
Deletes itself 1 IoCs
Processes:
cmd.exepid process 1324 cmd.exe -
Loads dropped DLL 6 IoCs
Processes:
9a4b975c_by_Libranalysis.exepid process 1344 9a4b975c_by_Libranalysis.exe 1344 9a4b975c_by_Libranalysis.exe 1344 9a4b975c_by_Libranalysis.exe 1344 9a4b975c_by_Libranalysis.exe 1344 9a4b975c_by_Libranalysis.exe 1344 9a4b975c_by_Libranalysis.exe -
Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
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Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
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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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Looks up external IP address via web service 3 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
Processes:
flow ioc 16 freegeoip.app 17 freegeoip.app 13 checkip.dyndns.org -
Suspicious use of SetThreadContext 2 IoCs
Processes:
9a4b975c_by_Libranalysis.exe233085788799.exedescription pid process target process PID 308 set thread context of 1344 308 9a4b975c_by_Libranalysis.exe 9a4b975c_by_Libranalysis.exe PID 640 set thread context of 1728 640 233085788799.exe 233085788799.exe -
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 1 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
9a4b975c_by_Libranalysis.exedescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString 9a4b975c_by_Libranalysis.exe -
Kills process with taskkill 1 IoCs
Processes:
taskkill.exepid process 1260 taskkill.exe -
NTFS ADS 1 IoCs
Processes:
9a4b975c_by_Libranalysis.exedescription ioc process File created C:\ProgramData\233085788799.exe:Zone.Identifier 9a4b975c_by_Libranalysis.exe -
Suspicious behavior: EnumeratesProcesses 1 IoCs
Processes:
233085788799.exepid process 1728 233085788799.exe -
Suspicious use of AdjustPrivilegeToken 4 IoCs
Processes:
9a4b975c_by_Libranalysis.exe233085788799.exetaskkill.exe233085788799.exedescription pid process Token: SeDebugPrivilege 308 9a4b975c_by_Libranalysis.exe Token: SeDebugPrivilege 640 233085788799.exe Token: SeDebugPrivilege 1260 taskkill.exe Token: SeDebugPrivilege 1728 233085788799.exe -
Suspicious use of WriteProcessMemory 31 IoCs
Processes:
9a4b975c_by_Libranalysis.exe9a4b975c_by_Libranalysis.execmd.exe233085788799.exedescription pid process target process PID 308 wrote to memory of 1344 308 9a4b975c_by_Libranalysis.exe 9a4b975c_by_Libranalysis.exe PID 308 wrote to memory of 1344 308 9a4b975c_by_Libranalysis.exe 9a4b975c_by_Libranalysis.exe PID 308 wrote to memory of 1344 308 9a4b975c_by_Libranalysis.exe 9a4b975c_by_Libranalysis.exe PID 308 wrote to memory of 1344 308 9a4b975c_by_Libranalysis.exe 9a4b975c_by_Libranalysis.exe PID 308 wrote to memory of 1344 308 9a4b975c_by_Libranalysis.exe 9a4b975c_by_Libranalysis.exe PID 308 wrote to memory of 1344 308 9a4b975c_by_Libranalysis.exe 9a4b975c_by_Libranalysis.exe PID 308 wrote to memory of 1344 308 9a4b975c_by_Libranalysis.exe 9a4b975c_by_Libranalysis.exe PID 308 wrote to memory of 1344 308 9a4b975c_by_Libranalysis.exe 9a4b975c_by_Libranalysis.exe PID 308 wrote to memory of 1344 308 9a4b975c_by_Libranalysis.exe 9a4b975c_by_Libranalysis.exe PID 308 wrote to memory of 1344 308 9a4b975c_by_Libranalysis.exe 9a4b975c_by_Libranalysis.exe PID 1344 wrote to memory of 640 1344 9a4b975c_by_Libranalysis.exe 233085788799.exe PID 1344 wrote to memory of 640 1344 9a4b975c_by_Libranalysis.exe 233085788799.exe PID 1344 wrote to memory of 640 1344 9a4b975c_by_Libranalysis.exe 233085788799.exe PID 1344 wrote to memory of 640 1344 9a4b975c_by_Libranalysis.exe 233085788799.exe PID 1344 wrote to memory of 1324 1344 9a4b975c_by_Libranalysis.exe cmd.exe PID 1344 wrote to memory of 1324 1344 9a4b975c_by_Libranalysis.exe cmd.exe PID 1344 wrote to memory of 1324 1344 9a4b975c_by_Libranalysis.exe cmd.exe PID 1344 wrote to memory of 1324 1344 9a4b975c_by_Libranalysis.exe cmd.exe PID 1324 wrote to memory of 1260 1324 cmd.exe taskkill.exe PID 1324 wrote to memory of 1260 1324 cmd.exe taskkill.exe PID 1324 wrote to memory of 1260 1324 cmd.exe taskkill.exe PID 1324 wrote to memory of 1260 1324 cmd.exe taskkill.exe PID 640 wrote to memory of 1728 640 233085788799.exe 233085788799.exe PID 640 wrote to memory of 1728 640 233085788799.exe 233085788799.exe PID 640 wrote to memory of 1728 640 233085788799.exe 233085788799.exe PID 640 wrote to memory of 1728 640 233085788799.exe 233085788799.exe PID 640 wrote to memory of 1728 640 233085788799.exe 233085788799.exe PID 640 wrote to memory of 1728 640 233085788799.exe 233085788799.exe PID 640 wrote to memory of 1728 640 233085788799.exe 233085788799.exe PID 640 wrote to memory of 1728 640 233085788799.exe 233085788799.exe PID 640 wrote to memory of 1728 640 233085788799.exe 233085788799.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\9a4b975c_by_Libranalysis.exe"C:\Users\Admin\AppData\Local\Temp\9a4b975c_by_Libranalysis.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\9a4b975c_by_Libranalysis.exe"C:\Users\Admin\AppData\Local\Temp\9a4b975c_by_Libranalysis.exe"2⤵
- Loads dropped DLL
- Checks processor information in registry
- NTFS ADS
- Suspicious use of WriteProcessMemory
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C:\ProgramData\233085788799.exe"C:\ProgramData\233085788799.exe"3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\ProgramData\233085788799.exe"C:\ProgramData\233085788799.exe"4⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c taskkill /pid 1344 & erase C:\Users\Admin\AppData\Local\Temp\9a4b975c_by_Libranalysis.exe & RD /S /Q C:\\ProgramData\\309249621851364\\* & exit3⤵
- Deletes itself
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\taskkill.exetaskkill /pid 13444⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\ProgramData\233085788799.exeMD5
d7a28e461fc2dde6e3a65bf17231e897
SHA1e7d84a5953d63ff63d9fd30c5225710e72de014c
SHA2563c93f92ea751655e9f14691c73373699b57b33fe1d6c4e052a76bacd6b63b17c
SHA512722cc5ce33bd832b05db885635a0fbf9714faf079672db633346882738203db332eccfae70bc3cb6b4799fd2d738a50c5891f5adeefc8c746b3033b842c01a40
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C:\ProgramData\233085788799.exeMD5
d7a28e461fc2dde6e3a65bf17231e897
SHA1e7d84a5953d63ff63d9fd30c5225710e72de014c
SHA2563c93f92ea751655e9f14691c73373699b57b33fe1d6c4e052a76bacd6b63b17c
SHA512722cc5ce33bd832b05db885635a0fbf9714faf079672db633346882738203db332eccfae70bc3cb6b4799fd2d738a50c5891f5adeefc8c746b3033b842c01a40
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C:\ProgramData\233085788799.exeMD5
d7a28e461fc2dde6e3a65bf17231e897
SHA1e7d84a5953d63ff63d9fd30c5225710e72de014c
SHA2563c93f92ea751655e9f14691c73373699b57b33fe1d6c4e052a76bacd6b63b17c
SHA512722cc5ce33bd832b05db885635a0fbf9714faf079672db633346882738203db332eccfae70bc3cb6b4799fd2d738a50c5891f5adeefc8c746b3033b842c01a40
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C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Cookies\2YZ4EELH.txtMD5
1c51bbf8d661956574dddbb7a4ee7cdc
SHA160aad86cdf72cc328518d9ccb3ea518ce9c712be
SHA25671f9aa8b1ca97a63d71b02457a28aee3e0464abff5b50e2fdb326b0dfcfa832b
SHA512e8d5019e0caf7ca585fdc222b897fcdd1e6045b9530a3a6962a48f7fbc163b18b1b2cc982c2d1e234320bb42c0b867ab9c0a18f0033fc0d5231b0f0e7137820a
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\ProgramData\233085788799.exeMD5
d7a28e461fc2dde6e3a65bf17231e897
SHA1e7d84a5953d63ff63d9fd30c5225710e72de014c
SHA2563c93f92ea751655e9f14691c73373699b57b33fe1d6c4e052a76bacd6b63b17c
SHA512722cc5ce33bd832b05db885635a0fbf9714faf079672db633346882738203db332eccfae70bc3cb6b4799fd2d738a50c5891f5adeefc8c746b3033b842c01a40
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\ProgramData\mozglue.dllMD5
8f73c08a9660691143661bf7332c3c27
SHA137fa65dd737c50fda710fdbde89e51374d0c204a
SHA2563fe6b1c54b8cf28f571e0c5d6636b4069a8ab00b4f11dd842cfec00691d0c9cd
SHA5120042ecf9b3571bb5eba2de893e8b2371df18f7c5a589f52ee66e4bfbaa15a5b8b7cc6a155792aaa8988528c27196896d5e82e1751c998bacea0d92395f66ad89
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\ProgramData\msvcp140.dllMD5
109f0f02fd37c84bfc7508d4227d7ed5
SHA1ef7420141bb15ac334d3964082361a460bfdb975
SHA256334e69ac9367f708ce601a6f490ff227d6c20636da5222f148b25831d22e13d4
SHA51246eb62b65817365c249b48863d894b4669e20fcb3992e747cd5c9fdd57968e1b2cf7418d1c9340a89865eadda362b8db51947eb4427412eb83b35994f932fd39
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\ProgramData\nss3.dllMD5
bfac4e3c5908856ba17d41edcd455a51
SHA18eec7e888767aa9e4cca8ff246eb2aacb9170428
SHA256e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78
SHA5122565bab776c4d732ffb1f9b415992a4c65b81bcd644a9a1df1333a269e322925fc1df4f76913463296efd7c88ef194c3056de2f1ca1357d7b5fe5ff0da877a66
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\ProgramData\sqlite3.dllMD5
e477a96c8f2b18d6b5c27bde49c990bf
SHA1e980c9bf41330d1e5bd04556db4646a0210f7409
SHA25616574f51785b0e2fc29c2c61477eb47bb39f714829999511dc8952b43ab17660
SHA512335a86268e7c0e568b1c30981ec644e6cd332e66f96d2551b58a82515316693c1859d87b4f4b7310cf1ac386cee671580fdd999c3bcb23acf2c2282c01c8798c
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\ProgramData\vcruntime140.dllMD5
7587bf9cb4147022cd5681b015183046
SHA1f2106306a8f6f0da5afb7fc765cfa0757ad5a628
SHA256c40bb03199a2054dabfc7a8e01d6098e91de7193619effbd0f142a7bf031c14d
SHA5120b63e4979846ceba1b1ed8470432ea6aa18cca66b5f5322d17b14bc0dfa4b2ee09ca300a016e16a01db5123e4e022820698f46d9bad1078bd24675b4b181e91f
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memory/308-60-0x00000000002E0000-0x00000000002E1000-memory.dmpFilesize
4KB
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memory/308-63-0x00000000006C0000-0x00000000006E1000-memory.dmpFilesize
132KB
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memory/308-62-0x00000000003D0000-0x00000000003D1000-memory.dmpFilesize
4KB
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memory/640-77-0x0000000000A90000-0x0000000000A91000-memory.dmpFilesize
4KB
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memory/640-84-0x0000000000400000-0x0000000000401000-memory.dmpFilesize
4KB
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memory/640-74-0x0000000000000000-mapping.dmp
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memory/1260-80-0x0000000000000000-mapping.dmp
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memory/1324-79-0x0000000000000000-mapping.dmp
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memory/1344-67-0x0000000000400000-0x0000000000438000-memory.dmpFilesize
224KB
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memory/1344-66-0x0000000075A31000-0x0000000075A33000-memory.dmpFilesize
8KB
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memory/1344-65-0x000000000040717B-mapping.dmp
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memory/1344-64-0x0000000000400000-0x0000000000438000-memory.dmpFilesize
224KB
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memory/1728-82-0x0000000000400000-0x000000000046A000-memory.dmpFilesize
424KB
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memory/1728-83-0x000000000046446E-mapping.dmp
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memory/1728-86-0x0000000000400000-0x000000000046A000-memory.dmpFilesize
424KB
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memory/1728-88-0x0000000004960000-0x0000000004961000-memory.dmpFilesize
4KB