| File name: | 2024-10-28_c9c4d2c659985660eb9d8afc35bb51b8_cobalt-strike_cobaltstrike_ryuk |
| Full analysis: | https://app.any.run/tasks/caf0afab-eb04-4124-b521-f70c594114c9 |
| Verdict: | Malicious activity |
| Threats: | A backdoor is a type of cybersecurity threat that allows attackers to secretly compromise a system and conduct malicious activities, such as stealing data and modifying files. Backdoors can be difficult to detect, as they often use legitimate system applications to evade defense mechanisms. Threat actors often utilize special malware, such as PlugX, to establish backdoors on target devices. |
| Analysis date: | October 28, 2024, 14:39:48 |
| OS: | Windows 10 Professional (build: 19045, 64 bit) |
| Tags: | |
| Indicators: | |
| MIME: | application/vnd.microsoft.portable-executable |
| File info: | PE32+ executable (GUI) x86-64, for MS Windows, 12 sections |
| MD5: | C9C4D2C659985660EB9D8AFC35BB51B8 |
| SHA1: | 622E529898CB530AD93937FC50E7C1225C179021 |
| SHA256: | 14030B5868E045EB1508F44697520CCADCB3247D9165E3E02F45B1CF94CB93EF |
| SSDEEP: | 49152:fjj5hOpu3JwIvrpsKdqY3BDhS418t8rlWZFPjBrDkrzglW7rluncEV:bj3OqJfrpjdqY3Z3WZFPjxkrzic |
MALICIOUS
XORed URL has been found (YARA)
- 2024-10-28_c9c4d2c659985660eb9d8afc35bb51b8_cobalt-strike_cobaltstrike_ryuk.exe (PID: 6464)
COBALTSTRIKE has been detected (YARA)
- 2024-10-28_c9c4d2c659985660eb9d8afc35bb51b8_cobalt-strike_cobaltstrike_ryuk.exe (PID: 6464)
SUSPICIOUS
Reads security settings of Internet Explorer
- 2024-10-28_c9c4d2c659985660eb9d8afc35bb51b8_cobalt-strike_cobaltstrike_ryuk.exe (PID: 6464)
Checks Windows Trust Settings
- 2024-10-28_c9c4d2c659985660eb9d8afc35bb51b8_cobalt-strike_cobaltstrike_ryuk.exe (PID: 6464)
Connects to unusual port
- 2024-10-28_c9c4d2c659985660eb9d8afc35bb51b8_cobalt-strike_cobaltstrike_ryuk.exe (PID: 6464)
INFO
Checks supported languages
- 2024-10-28_c9c4d2c659985660eb9d8afc35bb51b8_cobalt-strike_cobaltstrike_ryuk.exe (PID: 6464)
Reads the computer name
- 2024-10-28_c9c4d2c659985660eb9d8afc35bb51b8_cobalt-strike_cobaltstrike_ryuk.exe (PID: 6464)
Reads the machine GUID from the registry
- 2024-10-28_c9c4d2c659985660eb9d8afc35bb51b8_cobalt-strike_cobaltstrike_ryuk.exe (PID: 6464)
Checks proxy server information
- 2024-10-28_c9c4d2c659985660eb9d8afc35bb51b8_cobalt-strike_cobaltstrike_ryuk.exe (PID: 6464)
Reads the software policy settings
- 2024-10-28_c9c4d2c659985660eb9d8afc35bb51b8_cobalt-strike_cobaltstrike_ryuk.exe (PID: 6464)
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report
xor-url
(PID) Process(6464) 2024-10-28_c9c4d2c659985660eb9d8afc35bb51b8_cobalt-strike_cobaltstrike_ryuk.exe
Decrypted-URLs (1)http://code.jquery.com/
CobalStrike
(PID) Process(6464) 2024-10-28_c9c4d2c659985660eb9d8afc35bb51b8_cobalt-strike_cobaltstrike_ryuk.exe
C2 (1)bbs.lvsehacker.com/jquery-3.3.1.min.js
BeaconTypeHTTPS
Port443
SleepTime45000
MaxGetSize1403644
Jitter37
PublicKey-----BEGIN PUBLIC KEY-----
MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCySJmC2Kejyh8wxJ7se4S8yRTR
Dzcy9+eXXqg9piZJEbTSHg1tnouvf/iODXvyVIQn1CXADdK4eJlxGpkOyB10zSV6
UMOmvqDD2zvoTgkVuSVxgSwtkPlAcrpRUmJTiaAa/ipJ5Yn+vbAO7RWGnOViyP8J
GdrnXD1Dwv4eW3L2CQIDAQAB
-----END PUBLIC KEY-----
DNS_strategyround-robin
DNS_strategy_rotate_seconds-1
DNS_strategy_fail_x-1
DNS_strategy_fail_seconds-1
SpawnTo00000000000000000000000000000000
Spawnto_x86%windir%\syswow64\dllhost.exe
Spawnto_x64%windir%\sysnative\dllhost.exe
CryptoScheme0
HttpGet_VerbGET
HttpPost_VerbPOST
HttpPostChunk0
Watermark987654321
bStageCleanupTrue
bCFGCautionFalse
UserAgentMozilla/5.0 (Windows NT 6.3; Trident/7.0; rv:11.0) like Gecko
HttpPostUri/jquery-3.3.2.min.js
Malleable_C2_InstructionsRemove 1 bytes at the end, Remove 84 bytes from the beginning, Remove 3931 bytes from the beginning, Base64 URL-safe decode, XOR mask w/ random key
HttpGet_Metadata
ConstHeaders (3)Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Referer: http://code.jquery.com/
Accept-Encoding: gzip, deflate
SessionId (3)base64url
prepend: __cfduid=
header: Cookie
HttpPost_Metadata
ConstHeaders (3)Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Referer: http://code.jquery.com/
Accept-Encoding: gzip, deflate
SessionId (3)mask
base64url
parameter: __cfduid
Output (3)mask
base64url
print
bUsesCookies0001
Proxy_BehaviorUse IE settings
tcpFrameHeader0005800000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
smbFrameHeader0005800000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
KillDate0-0-0
bProcInject_StartRWXFalse
bProcInject_UseRWXFalse
bProcInject_MinAllocSize17500
ProcInject_PrependAppend_x869090..
ProcInject_PrependAppend_x649090..
ProcInject_Stubae5afcfee8026674dc8f3b4f2da46c7f
ProcInject_AllocationMethodNtMapViewOfSection
TRiD
| .exe | | | Generic Win/DOS Executable (50) |
|---|---|---|
| .exe | | | DOS Executable Generic (49.9) |
EXIF
EXE
| MachineType: | AMD AMD64 |
|---|---|
| TimeStamp: | 2024:10:24 02:38:34+00:00 |
| ImageFileCharacteristics: | Executable, Large address aware |
| PEType: | PE32+ |
| LinkerVersion: | 14 |
| CodeSize: | 704000 |
| InitializedDataSize: | 835584 |
| UninitializedDataSize: | - |
| EntryPoint: | 0x7d0c8 |
| OSVersion: | 6 |
| ImageVersion: | - |
| SubsystemVersion: | 6 |
| Subsystem: | Windows GUI |
Total processes
126
Monitored processes
1
Malicious processes
1
Suspicious processes
0
Behavior graph
Click at the process to see the details
Process information
PID | CMD | Path | Indicators | Parent process | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 6464 | "C:\Users\admin\Desktop\2024-10-28_c9c4d2c659985660eb9d8afc35bb51b8_cobalt-strike_cobaltstrike_ryuk.exe" | C:\Users\admin\Desktop\2024-10-28_c9c4d2c659985660eb9d8afc35bb51b8_cobalt-strike_cobaltstrike_ryuk.exe | explorer.exe | ||||||||||||
User: admin Integrity Level: MEDIUM Modules
xor-url(PID) Process(6464) 2024-10-28_c9c4d2c659985660eb9d8afc35bb51b8_cobalt-strike_cobaltstrike_ryuk.exe Decrypted-URLs (1)http://code.jquery.com/ CobalStrike(PID) Process(6464) 2024-10-28_c9c4d2c659985660eb9d8afc35bb51b8_cobalt-strike_cobaltstrike_ryuk.exe C2 (1)bbs.lvsehacker.com/jquery-3.3.1.min.js BeaconTypeHTTPS Port443 SleepTime45000 MaxGetSize1403644 Jitter37 PublicKey-----BEGIN PUBLIC KEY-----
MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCySJmC2Kejyh8wxJ7se4S8yRTR
Dzcy9+eXXqg9piZJEbTSHg1tnouvf/iODXvyVIQn1CXADdK4eJlxGpkOyB10zSV6
UMOmvqDD2zvoTgkVuSVxgSwtkPlAcrpRUmJTiaAa/ipJ5Yn+vbAO7RWGnOViyP8J
GdrnXD1Dwv4eW3L2CQIDAQAB
-----END PUBLIC KEY----- DNS_strategyround-robin DNS_strategy_rotate_seconds-1 DNS_strategy_fail_x-1 DNS_strategy_fail_seconds-1 SpawnTo00000000000000000000000000000000 Spawnto_x86%windir%\syswow64\dllhost.exe Spawnto_x64%windir%\sysnative\dllhost.exe CryptoScheme0 HttpGet_VerbGET HttpPost_VerbPOST HttpPostChunk0 Watermark987654321 bStageCleanupTrue bCFGCautionFalse UserAgentMozilla/5.0 (Windows NT 6.3; Trident/7.0; rv:11.0) like Gecko HttpPostUri/jquery-3.3.2.min.js Malleable_C2_InstructionsRemove 1 bytes at the end, Remove 84 bytes from the beginning, Remove 3931 bytes from the beginning, Base64 URL-safe decode, XOR mask w/ random key HttpGet_Metadata ConstHeaders (3)Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8 Referer: http://code.jquery.com/ Accept-Encoding: gzip, deflate SessionId (3)base64url prepend: __cfduid= header: Cookie HttpPost_Metadata ConstHeaders (3)Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8 Referer: http://code.jquery.com/ Accept-Encoding: gzip, deflate SessionId (3)mask base64url parameter: __cfduid Output (3)mask base64url print bUsesCookies0001 Proxy_BehaviorUse IE settings tcpFrameHeader0005800000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 smbFrameHeader0005800000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 KillDate0-0-0 bProcInject_StartRWXFalse bProcInject_UseRWXFalse bProcInject_MinAllocSize17500 ProcInject_PrependAppend_x869090.. ProcInject_PrependAppend_x649090.. ProcInject_Stubae5afcfee8026674dc8f3b4f2da46c7f ProcInject_AllocationMethodNtMapViewOfSection | |||||||||||||||
Total events
3 798
Read events
3 798
Write events
0
Delete events
0
Modification events
Executable files
0
Suspicious files
1
Text files
0
Unknown types
0
Dropped files
PID | Process | Filename | Type | |
|---|---|---|---|---|
| 6464 | 2024-10-28_c9c4d2c659985660eb9d8afc35bb51b8_cobalt-strike_cobaltstrike_ryuk.exe | C:\Users\admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\WindowsSecurityHealthSystray.lnk | binary | |
MD5:1D961B76DB408C755D6059C28D606D23 | SHA256:69734E7A9FD2E7565697BDCF4C31CD2AF9BFE82A7923F80E7FBA513F9B303A35 | |||
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
10
TCP/UDP connections
42
DNS requests
15
Threats
11
HTTP requests
PID | Process | Method | HTTP Code | IP | URL | CN | Type | Size | Reputation |
|---|---|---|---|---|---|---|---|---|---|
1252 | RUXIMICS.exe | GET | 200 | 2.16.164.9:80 | http://crl.microsoft.com/pki/crl/products/MicRooCerAut2011_2011_03_22.crl | unknown | — | — | whitelisted |
6944 | svchost.exe | GET | 200 | 88.221.169.152:80 | http://www.microsoft.com/pkiops/crl/MicSecSerCA2011_2011-10-18.crl | unknown | — | — | whitelisted |
1252 | RUXIMICS.exe | GET | 200 | 88.221.169.152:80 | http://www.microsoft.com/pkiops/crl/MicSecSerCA2011_2011-10-18.crl | unknown | — | — | whitelisted |
— | — | GET | 200 | 45.14.226.64:443 | https://bbs.lvsehacker.com/jquery-3.3.1.min.js | unknown | binary | 5.50 Kb | malicious |
6944 | svchost.exe | GET | 200 | 2.16.164.9:80 | http://crl.microsoft.com/pki/crl/products/MicRooCerAut2011_2011_03_22.crl | unknown | — | — | whitelisted |
5488 | MoUsoCoreWorker.exe | GET | 200 | 88.221.169.152:80 | http://www.microsoft.com/pkiops/crl/MicSecSerCA2011_2011-10-18.crl | unknown | — | — | whitelisted |
5488 | MoUsoCoreWorker.exe | GET | 200 | 2.16.164.9:80 | http://crl.microsoft.com/pki/crl/products/MicRooCerAut2011_2011_03_22.crl | unknown | — | — | whitelisted |
— | — | GET | — | 45.14.226.64:443 | https://bbs.lvsehacker.com/jquery-3.3.1.min.js | unknown | — | — | — |
— | — | GET | 200 | 45.14.226.64:443 | https://bbs.lvsehacker.com/jquery-3.3.1.min.js | unknown | binary | 5.50 Kb | malicious |
— | — | GET | 200 | 45.14.226.64:443 | https://bbs.lvsehacker.com/jquery-3.3.1.min.js | unknown | binary | 5.56 Kb | malicious |
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
Connections
PID | Process | IP | Domain | ASN | CN | Reputation |
|---|---|---|---|---|---|---|
6944 | svchost.exe | 20.73.194.208:443 | settings-win.data.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | NL | whitelisted |
4 | System | 192.168.100.255:137 | — | — | — | whitelisted |
1252 | RUXIMICS.exe | 20.73.194.208:443 | settings-win.data.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | NL | whitelisted |
5488 | MoUsoCoreWorker.exe | 20.73.194.208:443 | settings-win.data.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | NL | whitelisted |
— | — | 2.23.209.189:443 | www.bing.com | Akamai International B.V. | GB | whitelisted |
4 | System | 192.168.100.255:138 | — | — | — | whitelisted |
6464 | 2024-10-28_c9c4d2c659985660eb9d8afc35bb51b8_cobalt-strike_cobaltstrike_ryuk.exe | 142.250.185.228:443 | www.google.com | GOOGLE | US | whitelisted |
6464 | 2024-10-28_c9c4d2c659985660eb9d8afc35bb51b8_cobalt-strike_cobaltstrike_ryuk.exe | 103.235.47.188:443 | www.baidu.com | Beijing Baidu Netcom Science and Technology Co., Ltd. | HK | whitelisted |
6464 | 2024-10-28_c9c4d2c659985660eb9d8afc35bb51b8_cobalt-strike_cobaltstrike_ryuk.exe | 45.14.226.64:443 | bbs.lvsehacker.com | SpectraIP B.V. | NL | unknown |
6464 | 2024-10-28_c9c4d2c659985660eb9d8afc35bb51b8_cobalt-strike_cobaltstrike_ryuk.exe | 162.159.46.1:443 | cloudflare-ip-v4.html.zone | CLOUDFLARENET | — | unknown |
DNS requests
Domain | IP | Reputation |
|---|---|---|
settings-win.data.microsoft.com |
| whitelisted |
www.bing.com |
| whitelisted |
google.com |
| whitelisted |
cloudflare-ip-v4.html.zone |
| unknown |
www.google.com |
| whitelisted |
www.baidu.com |
| whitelisted |
bbs.lvsehacker.com |
| malicious |
f3hrq9vj.bjguigang.com |
| unknown |
crl.microsoft.com |
| whitelisted |
www.microsoft.com |
| whitelisted |
Threats
PID | Process | Class | Message |
|---|---|---|---|
— | — | Malware Command and Control Activity Detected | ET MALWARE Cobalt Strike Malleable C2 JQuery Custom Profile M2 |
— | — | A Network Trojan was detected | ET MALWARE Cobalt Strike Beacon Activity (GET) |
— | — | Malware Command and Control Activity Detected | ET MALWARE Cobalt Strike Malleable C2 JQuery Custom Profile Response |
— | — | Malware Command and Control Activity Detected | ET MALWARE Cobalt Strike Malleable C2 JQuery Custom Profile M2 |
— | — | A Network Trojan was detected | ET MALWARE Cobalt Strike Beacon Activity (GET) |
— | — | Malware Command and Control Activity Detected | ET MALWARE Cobalt Strike Malleable C2 JQuery Custom Profile M2 |
— | — | A Network Trojan was detected | ET MALWARE Cobalt Strike Beacon Activity (GET) |
— | — | Malware Command and Control Activity Detected | ET MALWARE Cobalt Strike Malleable C2 JQuery Custom Profile Response |
— | — | Malware Command and Control Activity Detected | ET MALWARE Cobalt Strike Malleable C2 JQuery Custom Profile M2 |
— | — | A Network Trojan was detected | ET MALWARE Cobalt Strike Beacon Activity (GET) |