Analysis
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max time kernel
45s -
max time network
119s -
platform
windows7_x64 -
resource
win7v20210408 -
submitted
06-05-2021 15:06
Static task
static1
Behavioral task
behavioral1
Sample
9a4b975c_by_Libranalysis.exe
Resource
win7v20210408
Behavioral task
behavioral2
Sample
9a4b975c_by_Libranalysis.exe
Resource
win10v20210410
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/1388-79-0x0000000000400000-0x000000000046A000-memory.dmp family_snakekeylogger behavioral1/memory/1388-81-0x000000000046446E-mapping.dmp family_snakekeylogger behavioral1/memory/1388-84-0x0000000000400000-0x000000000046A000-memory.dmp family_snakekeylogger -
Downloads MZ/PE file
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Executes dropped EXE 2 IoCs
Processes:
656676147233.exe656676147233.exepid process 1088 656676147233.exe 1388 656676147233.exe -
Deletes itself 1 IoCs
Processes:
cmd.exepid process 1376 cmd.exe -
Loads dropped DLL 6 IoCs
Processes:
9a4b975c_by_Libranalysis.exepid process 1720 9a4b975c_by_Libranalysis.exe 1720 9a4b975c_by_Libranalysis.exe 1720 9a4b975c_by_Libranalysis.exe 1720 9a4b975c_by_Libranalysis.exe 1720 9a4b975c_by_Libranalysis.exe 1720 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 14 checkip.dyndns.org 17 freegeoip.app 18 freegeoip.app -
Suspicious use of SetThreadContext 2 IoCs
Processes:
9a4b975c_by_Libranalysis.exe656676147233.exedescription pid process target process PID 1824 set thread context of 1720 1824 9a4b975c_by_Libranalysis.exe 9a4b975c_by_Libranalysis.exe PID 1088 set thread context of 1388 1088 656676147233.exe 656676147233.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 1488 taskkill.exe -
NTFS ADS 1 IoCs
Processes:
9a4b975c_by_Libranalysis.exedescription ioc process File created C:\ProgramData\656676147233.exe:Zone.Identifier 9a4b975c_by_Libranalysis.exe -
Suspicious behavior: EnumeratesProcesses 1 IoCs
Processes:
656676147233.exepid process 1388 656676147233.exe -
Suspicious use of AdjustPrivilegeToken 4 IoCs
Processes:
9a4b975c_by_Libranalysis.exe656676147233.exe656676147233.exetaskkill.exedescription pid process Token: SeDebugPrivilege 1824 9a4b975c_by_Libranalysis.exe Token: SeDebugPrivilege 1088 656676147233.exe Token: SeDebugPrivilege 1388 656676147233.exe Token: SeDebugPrivilege 1488 taskkill.exe -
Suspicious use of WriteProcessMemory 31 IoCs
Processes:
9a4b975c_by_Libranalysis.exe9a4b975c_by_Libranalysis.exe656676147233.execmd.exedescription pid process target process PID 1824 wrote to memory of 1720 1824 9a4b975c_by_Libranalysis.exe 9a4b975c_by_Libranalysis.exe PID 1824 wrote to memory of 1720 1824 9a4b975c_by_Libranalysis.exe 9a4b975c_by_Libranalysis.exe PID 1824 wrote to memory of 1720 1824 9a4b975c_by_Libranalysis.exe 9a4b975c_by_Libranalysis.exe PID 1824 wrote to memory of 1720 1824 9a4b975c_by_Libranalysis.exe 9a4b975c_by_Libranalysis.exe PID 1824 wrote to memory of 1720 1824 9a4b975c_by_Libranalysis.exe 9a4b975c_by_Libranalysis.exe PID 1824 wrote to memory of 1720 1824 9a4b975c_by_Libranalysis.exe 9a4b975c_by_Libranalysis.exe PID 1824 wrote to memory of 1720 1824 9a4b975c_by_Libranalysis.exe 9a4b975c_by_Libranalysis.exe PID 1824 wrote to memory of 1720 1824 9a4b975c_by_Libranalysis.exe 9a4b975c_by_Libranalysis.exe PID 1824 wrote to memory of 1720 1824 9a4b975c_by_Libranalysis.exe 9a4b975c_by_Libranalysis.exe PID 1824 wrote to memory of 1720 1824 9a4b975c_by_Libranalysis.exe 9a4b975c_by_Libranalysis.exe PID 1720 wrote to memory of 1088 1720 9a4b975c_by_Libranalysis.exe 656676147233.exe PID 1720 wrote to memory of 1088 1720 9a4b975c_by_Libranalysis.exe 656676147233.exe PID 1720 wrote to memory of 1088 1720 9a4b975c_by_Libranalysis.exe 656676147233.exe PID 1720 wrote to memory of 1088 1720 9a4b975c_by_Libranalysis.exe 656676147233.exe PID 1088 wrote to memory of 1388 1088 656676147233.exe 656676147233.exe PID 1088 wrote to memory of 1388 1088 656676147233.exe 656676147233.exe PID 1088 wrote to memory of 1388 1088 656676147233.exe 656676147233.exe PID 1088 wrote to memory of 1388 1088 656676147233.exe 656676147233.exe PID 1088 wrote to memory of 1388 1088 656676147233.exe 656676147233.exe PID 1088 wrote to memory of 1388 1088 656676147233.exe 656676147233.exe PID 1088 wrote to memory of 1388 1088 656676147233.exe 656676147233.exe PID 1088 wrote to memory of 1388 1088 656676147233.exe 656676147233.exe PID 1088 wrote to memory of 1388 1088 656676147233.exe 656676147233.exe PID 1720 wrote to memory of 1376 1720 9a4b975c_by_Libranalysis.exe cmd.exe PID 1720 wrote to memory of 1376 1720 9a4b975c_by_Libranalysis.exe cmd.exe PID 1720 wrote to memory of 1376 1720 9a4b975c_by_Libranalysis.exe cmd.exe PID 1720 wrote to memory of 1376 1720 9a4b975c_by_Libranalysis.exe cmd.exe PID 1376 wrote to memory of 1488 1376 cmd.exe taskkill.exe PID 1376 wrote to memory of 1488 1376 cmd.exe taskkill.exe PID 1376 wrote to memory of 1488 1376 cmd.exe taskkill.exe PID 1376 wrote to memory of 1488 1376 cmd.exe taskkill.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\656676147233.exe"C:\ProgramData\656676147233.exe"3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\ProgramData\656676147233.exe"C:\ProgramData\656676147233.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 1720 & erase C:\Users\Admin\AppData\Local\Temp\9a4b975c_by_Libranalysis.exe & RD /S /Q C:\\ProgramData\\744738066652469\\* & exit3⤵
- Deletes itself
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\taskkill.exetaskkill /pid 17204⤵
- 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\656676147233.exeMD5
d7a28e461fc2dde6e3a65bf17231e897
SHA1e7d84a5953d63ff63d9fd30c5225710e72de014c
SHA2563c93f92ea751655e9f14691c73373699b57b33fe1d6c4e052a76bacd6b63b17c
SHA512722cc5ce33bd832b05db885635a0fbf9714faf079672db633346882738203db332eccfae70bc3cb6b4799fd2d738a50c5891f5adeefc8c746b3033b842c01a40
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C:\ProgramData\656676147233.exeMD5
d7a28e461fc2dde6e3a65bf17231e897
SHA1e7d84a5953d63ff63d9fd30c5225710e72de014c
SHA2563c93f92ea751655e9f14691c73373699b57b33fe1d6c4e052a76bacd6b63b17c
SHA512722cc5ce33bd832b05db885635a0fbf9714faf079672db633346882738203db332eccfae70bc3cb6b4799fd2d738a50c5891f5adeefc8c746b3033b842c01a40
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C:\ProgramData\656676147233.exeMD5
d7a28e461fc2dde6e3a65bf17231e897
SHA1e7d84a5953d63ff63d9fd30c5225710e72de014c
SHA2563c93f92ea751655e9f14691c73373699b57b33fe1d6c4e052a76bacd6b63b17c
SHA512722cc5ce33bd832b05db885635a0fbf9714faf079672db633346882738203db332eccfae70bc3cb6b4799fd2d738a50c5891f5adeefc8c746b3033b842c01a40
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C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Cookies\RZWJD5YU.txtMD5
73e6789509144d1820ecc5162de864ca
SHA1b3fe8766df0277d85534e83a1a0dd9ebb77d52f0
SHA25681cbcd8058702a7f74cec62852c2b571b96d5c696859494eb27ef865e121d66c
SHA51254cfa5be497a405b8e80cef6fcb07187973d6d3d6db3c51fed6f5c06810ae6c6d69f486f43868b9b6ebdef18928141fbf988bd923a852a02febcffd7982bba65
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\ProgramData\656676147233.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/1088-73-0x0000000000000000-mapping.dmp
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memory/1088-82-0x0000000004870000-0x0000000004871000-memory.dmpFilesize
4KB
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memory/1088-76-0x0000000001330000-0x0000000001331000-memory.dmpFilesize
4KB
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memory/1376-80-0x0000000000000000-mapping.dmp
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memory/1388-81-0x000000000046446E-mapping.dmp
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memory/1388-79-0x0000000000400000-0x000000000046A000-memory.dmpFilesize
424KB
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memory/1388-84-0x0000000000400000-0x000000000046A000-memory.dmpFilesize
424KB
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memory/1388-87-0x0000000004DD0000-0x0000000004DD1000-memory.dmpFilesize
4KB
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memory/1488-86-0x0000000000000000-mapping.dmp
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memory/1720-66-0x0000000000400000-0x0000000000438000-memory.dmpFilesize
224KB
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memory/1720-65-0x0000000075FF1000-0x0000000075FF3000-memory.dmpFilesize
8KB
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memory/1720-64-0x000000000040717B-mapping.dmp
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memory/1720-63-0x0000000000400000-0x0000000000438000-memory.dmpFilesize
224KB
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memory/1824-59-0x0000000001180000-0x0000000001181000-memory.dmpFilesize
4KB
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memory/1824-62-0x0000000000AE0000-0x0000000000B01000-memory.dmpFilesize
132KB
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memory/1824-61-0x0000000004960000-0x0000000004961000-memory.dmpFilesize
4KB