MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 b4cfc49d647ebeffb99579dbd4be2a4ca779e3d36b60656aaa9d616ac343e991. While MalwareBazaar tries to identify whether the sample provided is malicious or not, there is no guarantee that a sample in MalwareBazaar is malicious.
Database Entry
CobaltStrike
Vendor detections: 12
| SHA256 hash: | b4cfc49d647ebeffb99579dbd4be2a4ca779e3d36b60656aaa9d616ac343e991 |
|---|---|
| SHA3-384 hash: | 07109f452b65ae342dcccd3fb3d978bc5a439ca5c98700defe82c82acad6ad99e02da50b71a1950a3352469594d9100e |
| SHA1 hash: | 1e151a99c1b3e8f66f70e0174b957cc687c79984 |
| MD5 hash: | b594afc619b7f19b04c125b093ddb099 |
| humanhash: | lima-mango-vegan-shade |
| File name: | b4cfc49d647ebeffb99579dbd4be2a4ca779e3d36b60656aaa9d616ac343e991 |
| Download: | download sample |
| Signature | CobaltStrike |
| File size: | 2'600'448 bytes |
| First seen: | 2021-08-12 12:52:02 UTC |
| Last seen: | 2021-08-12 13:59:09 UTC |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | 4035d2883e01d64f3e7a9dccb1d63af5 (47 x ServHelper, 32 x Vidar, 20 x LummaStealer) |
| ssdeep | 24576:lR5N5YQjiT5MEiIoSFfxnqq+/BIBRo/OWhUpH/f0HLa8q16:dH1jMJiIoMJnqq+/BIztx8He8q1 |
| Threatray | 276 similar samples on MalwareBazaar |
| TLSH | T140C53A06F89204FAC57EF13085929361BAB17C6443313BD71F94BAAA2A76FD46E3D314 |
| Reporter |  JAMESWT_WT |
| Tags: | CobaltStrike exe |
Intelligence
File Origin
# of uploads :
2
# of downloads :
568
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
b4cfc49d647ebeffb99579dbd4be2a4ca779e3d36b60656aaa9d616ac343e991
Verdict:
No threats detected
Analysis date:
2021-08-12 13:01:47 UTC
Tags:
n/a
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
CobaltStrike
Result
Verdict:
Malware
Maliciousness:
Behaviour
Connection attempt
Sending an HTTP GET request
Sending a UDP request
Result
Verdict:
MALICIOUS
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Malware family:
CobaltStrike
Verdict:
Malicious
Result
Threat name:
CobaltStrike
Detection:
malicious
Classification:
troj
Score:
100 / 100
Signature
C2 URLs / IPs found in malware configuration
Found malware configuration
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Uses known network protocols on non-standard ports
Yara detected CobaltStrike
Behaviour
Behavior Graph:
Threat name:
Win64.Trojan.Shelma
Status:
Malicious
First seen:
2021-08-12 02:59:56 UTC
File Type:
PE+ (Exe)
AV detection:
14 of 46 (30.43%)
Threat level:
5/5
Detection(s):
Suspicious file
Verdict:
malicious
Label(s):
cobaltstrike
Similar samples:
+ 266 additional samples on MalwareBazaar
Result
Malware family:
cobaltstrike
Score:
10/10
Tags:
family:cobaltstrike botnet:0 botnet:305419896 backdoor trojan
Behaviour
Cobaltstrike
Malware Config
C2 Extraction:
http://122.9.157.122:800/yz73
http://122.9.157.122:800/visit.js
http://122.9.157.122:800/visit.js
Unpacked files
SH256 hash:
b4cfc49d647ebeffb99579dbd4be2a4ca779e3d36b60656aaa9d616ac343e991
MD5 hash:
b594afc619b7f19b04c125b093ddb099
SHA1 hash:
1e151a99c1b3e8f66f70e0174b957cc687c79984
Malware family:
Cobalt Strike
Verdict:
Malicious
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.60
YARA Signatures
MalwareBazaar uses YARA rules from several public and non-public repositories, such as YARAhub and Malpedia. Those are being matched against malware samples uploaded to MalwareBazaar as well as against any suspicious process dumps they may create. Please note that only results from TLP:CLEAR rules are being displayed.
| Rule name: | Beacon_K5om |
|---|---|
| Author: | Florian Roth |
| Description: | Detects Meterpreter Beacon - file K5om.dll |
| Reference: | https://www.fireeye.com/blog/threat-research/2017/06/phished-at-the-request-of-counsel.html |
| Rule name: | Cobaltbaltstrike_Beacon_x64 |
|---|---|
| Author: | Avast Threat Intel Team |
| Description: | Detects CobaltStrike payloads |
| Reference: | https://github.com/avast/ioc |
| Rule name: | Cobaltbaltstrike_Payload_Encoded |
|---|---|
| Author: | Avast Threat Intel Team |
| Description: | Detects CobaltStrike payloads |
| Reference: | https://github.com/avast/ioc |
| Rule name: | CobaltStrikeBeacon |
|---|---|
| Author: | enzo |
| Description: | Cobalt Strike Beacon Payload |
| Rule name: | CobaltStrike_C2_Encoded_XOR_Config_Indicator |
|---|---|
| Author: | yara@s3c.za.net |
| Description: | Detects CobaltStrike C2 encoded profile configuration |
| Rule name: | CobaltStrike_MZ_Launcher |
|---|---|
| Author: | yara@s3c.za.net |
| Description: | Detects CobaltStrike MZ header ReflectiveLoader launcher |
| Rule name: | CobaltStrike_Unmodifed_Beacon |
|---|---|
| Author: | yara@s3c.za.net |
| Description: | Detects unmodified CobaltStrike beacon DLL |
| Rule name: | crime_win32_csbeacon_1 |
|---|---|
| Author: | @VK_Intel |
| Description: | Detects Cobalt Strike loader |
| Reference: | https://twitter.com/VK_Intel/status/1239632822358474753 |
| Rule name: | CS_beacon |
|---|---|
| Author: | Etienne Maynier tek@randhome.io |
| Rule name: | GoBinTest |
|---|
| Rule name: | GoBinTest |
|---|
| Rule name: | golang |
|---|
| Rule name: | golang |
|---|
| Rule name: | HKTL_CobaltStrike_Beacon_Strings |
|---|---|
| Author: | Elastic |
| Description: | Identifies strings used in Cobalt Strike Beacon DLL |
| Reference: | https://www.elastic.co/blog/detecting-cobalt-strike-with-memory-signatures |
| Rule name: | HKTL_Meterpreter_inMemory |
|---|---|
| Author: | netbiosX, Florian Roth |
| Description: | Detects Meterpreter in-memory |
| Reference: | https://www.reddit.com/r/purpleteamsec/comments/hjux11/meterpreter_memory_indicators_detection_tooling/ |
| Rule name: | HKTL_Win_CobaltStrike |
|---|---|
| Author: | threatintel@volexity.com |
| Description: | The CobaltStrike malware family. |
| Reference: | https://www.volexity.com/blog/2021/05/27/suspected-apt29-operation-launches-election-fraud-themed-phishing-campaigns/ |
| Rule name: | INDICATOR_SUSPICIOUS_ReflectiveLoader |
|---|---|
| Author: | ditekSHen |
| Description: | detects Reflective DLL injection artifacts |
| Rule name: | Leviathan_CobaltStrike_Sample_1 |
|---|---|
| Author: | Florian Roth |
| Description: | Detects Cobalt Strike sample from Leviathan report |
| Reference: | https://goo.gl/MZ7dRg |
| Rule name: | Malware_QA_vqgk |
|---|---|
| Author: | Florian Roth |
| Description: | VT Research QA uploaded malware - file vqgk.dll |
| Reference: | VT Research QA |
| Rule name: | MALWARE_Win_CobaltStrike |
|---|---|
| Author: | ditekSHen |
| Description: | CobaltStrike payload |
| Rule name: | MALW_cobaltrike |
|---|---|
| Author: | Marc Rivero | McAfee ATR Team |
| Description: | Rule to detect CobaltStrike beacon |
| Rule name: | PowerShell_Susp_Parameter_Combo |
|---|---|
| Author: | Florian Roth |
| Description: | Detects PowerShell invocation with suspicious parameters |
| Reference: | https://goo.gl/uAic1X |
| Rule name: | ReflectiveLoader |
|---|---|
| Author: | Florian Roth |
| Description: | Detects a unspecified hack tool, crack or malware using a reflective loader - no hard match - further investigation recommended |
| Reference: | Internal Research |
| Rule name: | WiltedTulip_ReflectiveLoader |
|---|---|
| Author: | Florian Roth |
| Description: | Detects reflective loader (Cobalt Strike) used in Operation Wilted Tulip |
| Reference: | http://www.clearskysec.com/tulip |
| Rule name: | win_cobalt_strike_auto |
|---|---|
| Author: | Felix Bilstein - yara-signator at cocacoding dot com |
| Description: | Detects win.cobalt_strike. |
File information
The table below shows additional information about this malware sample such as delivery method and external references.
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