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Analysis
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max time kernel
67s -
max time network
71s -
platform
windows7_x64 -
resource
win7-20220414-en -
submitted
01/06/2022, 21:42
General
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Target
053022 BL#6329296080 IMPORTER#3400037 (NEED L.exe
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Size
747KB
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MD5
7a2babef327a833fb307c31517740e5d
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SHA1
9c87a1a547b9e5eddbf146d57d0589095d87b523
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SHA256
8d02836e227159df328ccb237413c709acf5683a526ffaedcdd09fd409a76cdb
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SHA512
683eba89141d595e6fb9d1ff2345827c59d545b8332fad71bef7f0481d8e257305f2c6ecc87b18e39c16548aae63ddef9560eceff71d45f1e4cb5355837955fa
Malware Config
Extracted
oski
internetstores.co.vu
Signatures
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Oski
Oski is an infostealer targeting browser data, crypto wallets.
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suricata: ET MALWARE Suspicious Zipped Filename in Outbound POST Request (Passwords.txt)
suricata: ET MALWARE Suspicious Zipped Filename in Outbound POST Request (Passwords.txt)
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suricata: ET MALWARE Suspicious Zipped Filename in Outbound POST Request (Passwords.txt) M2
suricata: ET MALWARE Suspicious Zipped Filename in Outbound POST Request (Passwords.txt) M2
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suricata: ET MALWARE Suspicious Zipped Filename in Outbound POST Request (passwords.txt) M2
suricata: ET MALWARE Suspicious Zipped Filename in Outbound POST Request (passwords.txt) M2
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suricata: ET MALWARE Vidar/Arkei/Megumin/Oski Stealer Data Exfil
suricata: ET MALWARE Vidar/Arkei/Megumin/Oski Stealer Data Exfil
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suricata: ET MALWARE Vidar/Arkei/Megumin/Oski Stealer HTTP POST Pattern
suricata: ET MALWARE Vidar/Arkei/Megumin/Oski Stealer HTTP POST Pattern
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Downloads MZ/PE file
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Loads dropped DLL 3 IoCs
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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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Suspicious use of SetThreadContext 1 IoCs
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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 1 IoCs
Processor information is often read in order to detect sandboxing environments.
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Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
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Kills process with taskkill 1 IoCs
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Suspicious behavior: EnumeratesProcesses 3 IoCs
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Suspicious use of AdjustPrivilegeToken 3 IoCs
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Suspicious use of WriteProcessMemory 26 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\053022 BL#6329296080 IMPORTER#3400037 (NEED L.exe"C:\Users\Admin\AppData\Local\Temp\053022 BL#6329296080 IMPORTER#3400037 (NEED L.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\wigXLqpt.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\wigXLqpt" /XML "C:\Users\Admin\AppData\Local\Temp\tmpBE51.tmp"2⤵
- Creates scheduled task(s)
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C:\Users\Admin\AppData\Local\Temp\053022 BL#6329296080 IMPORTER#3400037 (NEED L.exe"C:\Users\Admin\AppData\Local\Temp\053022 BL#6329296080 IMPORTER#3400037 (NEED L.exe"2⤵
- Loads dropped DLL
- Checks processor information in registry
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c taskkill /pid 1116 & erase C:\Users\Admin\AppData\Local\Temp\053022 BL#6329296080 IMPORTER#3400037 (NEED L.' & RD /S /Q C:\\ProgramData\\251656877903783\\* & exit3⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\taskkill.exetaskkill /pid 11164⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
1KB
MD58b1a2397237b9bf4020408ac72b18aeb
SHA11b8d14b2810279afe9559c3b2789bd08b7f0e3c9
SHA25603dfa6203672e08b04905b1ec06e3a9d32034fa7a528005091248b2198866413
SHA5129f279c9e18024f83b4a579dee1a131860782af7fbb21da5ddbbc86afc1197ee1f3b9b4196ce3dab0614ccdfe69f676aa10c9b7ae5a58915b9d7f09bfc51b1b90
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Filesize
133KB
MD58f73c08a9660691143661bf7332c3c27
SHA137fa65dd737c50fda710fdbde89e51374d0c204a
SHA2563fe6b1c54b8cf28f571e0c5d6636b4069a8ab00b4f11dd842cfec00691d0c9cd
SHA5120042ecf9b3571bb5eba2de893e8b2371df18f7c5a589f52ee66e4bfbaa15a5b8b7cc6a155792aaa8988528c27196896d5e82e1751c998bacea0d92395f66ad89
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Filesize
1.2MB
MD5bfac4e3c5908856ba17d41edcd455a51
SHA18eec7e888767aa9e4cca8ff246eb2aacb9170428
SHA256e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78
SHA5122565bab776c4d732ffb1f9b415992a4c65b81bcd644a9a1df1333a269e322925fc1df4f76913463296efd7c88ef194c3056de2f1ca1357d7b5fe5ff0da877a66
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Filesize
630KB
MD5e477a96c8f2b18d6b5c27bde49c990bf
SHA1e980c9bf41330d1e5bd04556db4646a0210f7409
SHA25616574f51785b0e2fc29c2c61477eb47bb39f714829999511dc8952b43ab17660
SHA512335a86268e7c0e568b1c30981ec644e6cd332e66f96d2551b58a82515316693c1859d87b4f4b7310cf1ac386cee671580fdd999c3bcb23acf2c2282c01c8798c
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Filesize
5.2MB
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Filesize
1.0MB
-
Filesize
180KB
-
Filesize
7.6MB
-
Filesize
1.6MB
-
Filesize
532KB
-
Filesize
1.1MB
-
Filesize
5.7MB
-
Filesize
516KB
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Filesize
5.7MB
-
Filesize
2.2MB
-
Filesize
8.5MB
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Filesize
11.0MB
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Filesize
1.1MB
-
Filesize
6.3MB
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Filesize
1.0MB
-
Filesize
180KB
-
Filesize
780KB
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Filesize
1.6MB
-
Filesize
624KB
-
Filesize
532KB
-
Filesize
148KB
-
Filesize
300KB
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Filesize
516KB
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Filesize
11.0MB
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Filesize
7.6MB
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Filesize
224KB
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Filesize
224KB
-
Filesize
224KB
-
Filesize
224KB
-
Filesize
224KB
-
Filesize
224KB
-
Filesize
224KB
-
Filesize
224KB
-
Filesize
224KB
-
Filesize
19.6MB
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Filesize
7.2MB
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Filesize
13.1MB
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Filesize
10.1MB
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Filesize
224KB
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Filesize
776KB
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Filesize
592KB
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Filesize
1.8MB
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Filesize
1.6MB
-
Filesize
10.1MB
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Filesize
19.0MB
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Filesize
3.9MB
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Filesize
11.7MB
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Filesize
19.6MB
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Filesize
1008KB
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Filesize
7.9MB
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Filesize
13.1MB
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Filesize
88KB
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Filesize
1.6MB
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Filesize
10.1MB
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Filesize
19.6MB
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Filesize
8KB
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Filesize
1.6MB
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Filesize
1.1MB