MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 ef44bc8719bfc8d25bf0f89c3c7109038936bacbb837fa37eb83e729be94a49a. 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
Cobalt Strike
Vendor detections: 16
| SHA256 hash: | ef44bc8719bfc8d25bf0f89c3c7109038936bacbb837fa37eb83e729be94a49a |
|---|---|
| SHA3-384 hash: | efc07d24d582a35da0f4fc87497109403d5e7f32c5d26ea4d657e1069fa48cf4b3a04dffe4d5f0ccee8027499ce1a0d8 |
| SHA1 hash: | 30fda2f773383bf0eab6b70ed31349f28bf0cc08 |
| MD5 hash: | e6365ed76364f8218118542d11e1eeca |
| humanhash: | connecticut-mexico-mirror-potato |
| File name: | setup_office.exe |
| Download: | download sample |
| Signature | Cobalt Strike |
| File size: | 19'456 bytes |
| First seen: | 2024-10-28 03:32:28 UTC |
| Last seen: | Never |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | 147442e63270e287ed57d33257638324 (161 x CobaltStrike, 22 x Cobalt Strike) |
| ssdeep | 192:DV7qaCF6Op1t2dobVXujRDcBaXWQjwOT/2UpCYtyWF8qa1Dojjgi:tqaCF31cix+Dc4zjjFF46gi |
| TLSH | T1F192E93FE71368E9C106D57845FF3732DCB23DB385A6971E1724D2B42E105A42EAEA10 |
| TrID | 41.1% (.EXE) Microsoft Visual C++ compiled executable (generic) (16529/12/5) 26.1% (.EXE) Win64 Executable (generic) (10522/11/4) 12.5% (.EXE) Win16 NE executable (generic) (5038/12/1) 5.1% (.ICL) Windows Icons Library (generic) (2059/9) 5.0% (.EXE) OS/2 Executable (generic) (2029/13) |
| Magika | pebin |
| Reporter |  1ZRR4H |
| Tags: | Cobalt Strike exe |
Indicators Of Compromise (IOCs)
Below is a list of indicators of compromise (IOCs) associated with this malware samples.
| IOC | ThreatFox Reference |
|---|---|
| http://141.98.197.31:7785/AieN | https://threatfox.abuse.ch/ioc/1339683/ |
Intelligence
File Origin
# of uploads :
1
# of downloads :
441
Origin country :
CLVendor Threat Intelligence
Malware family:
cobaltstrike
ID:
1
File name:
setup_office.exe
Verdict:
Malicious activity
Analysis date:
2024-10-28 03:36:19 UTC
Tags:
cobaltstrike backdoor
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
Score:
99.9%
Tags:
Cobaltstrike Cobalt Emotet
Result
Verdict:
Malware
Maliciousness:
Behaviour
Searching for the window
Connection attempt
Sending an HTTP GET request
Verdict:
Malicious
Threat level:
10/10
Confidence:
100%
Tags:
anti-debug cobalt cobaltstrike windows
Verdict:
Malicious
Labled as:
Dump:Generic.ShellCode.Marte.2
Malware family:
Cobalt Strike
Verdict:
Malicious
Result
Threat name:
CobaltStrike, Metasploit
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Signature
AI detected suspicious sample
Antivirus / Scanner detection for submitted sample
C2 URLs / IPs found in malware configuration
Contains functionality to detect sleep reduction / modifications
Detected unpacking (creates a PE file in dynamic memory)
Found API chain indicative of debugger detection
Found malware configuration
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Suricata IDS alerts for network traffic
Uses known network protocols on non-standard ports
Yara detected CobaltStrike
Yara detected Metasploit Payload
Yara detected Powershell download and execute
Behaviour
Behavior Graph:
Score:
97%
Verdict:
Malware
File Type:
PE
Threat name:
Win64.Backdoor.CobaltStrike
Status:
Malicious
First seen:
2024-10-28 03:33:06 UTC
File Type:
PE+ (Exe)
AV detection:
22 of 24 (91.67%)
Threat level:
5/5
Detection(s):
Suspicious file
Result
Malware family:
cobaltstrike
Score:
10/10
Tags:
family:cobaltstrike botnet:391144938 backdoor trojan
Behaviour
Cobaltstrike
Cobaltstrike family
Malware Config
C2 Extraction:
http://141.98.197.31:7785/Bm5y
http://141.98.197.31:7785/ga.js
http://141.98.197.31:7785/ga.js
Malware Family:
n/a
Verdict:
Malicious
Tags:
red_team_tool cobalt_strike meterpreter
YARA:
win_cobaltstrike_pipe_strings_nov_2023 Windows_Trojan_CobaltStrike_7f8da98a
Unpacked files
SH256 hash:
ef44bc8719bfc8d25bf0f89c3c7109038936bacbb837fa37eb83e729be94a49a
MD5 hash:
e6365ed76364f8218118542d11e1eeca
SHA1 hash:
30fda2f773383bf0eab6b70ed31349f28bf0cc08
Malware family:
CobaltStrike
Verdict:
Malicious
Please note that we are no longer able to provide a coverage score for Virus Total.
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: | pe_detect_tls_callbacks |
|---|
| Rule name: | Windows_Trojan_CobaltStrike_7f8da98a |
|---|---|
| Author: | Elastic Security |
| Rule name: | win_cobaltstrike_pipe_strings_nov_2023 |
|---|---|
| Author: | Matthew @ Embee_Research |
| Description: | Detects default strings related to cobalt strike named pipes |
File information
The table below shows additional information about this malware sample such as delivery method and external references.
No further information available
BLint
The following table provides more information about this file using BLint. BLint is a Binary Linter to check the security properties, and capabilities in executables.
Findings
| ID | Title | Severity |
|---|---|---|
| CHECK_AUTHENTICODE | Missing Authenticode | high |
| CHECK_NX | Missing Non-Executable Memory Protection | critical |
| CHECK_PIE | Missing Position-Independent Executable (PIE) Protection | high |
Reviews
| ID | Capabilities | Evidence |
|---|---|---|
| WIN32_PROCESS_API | Can Create Process and Threads | KERNEL32.dll::CloseHandle KERNEL32.dll::CreateThread |
| WIN_BASE_API | Uses Win Base API | KERNEL32.dll::TerminateProcess KERNEL32.dll::GetStartupInfoA |
| WIN_BASE_IO_API | Can Create Files | KERNEL32.dll::CreateFileA |
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