MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 c879b4f8bd38ddc5797d625effb573e7478dbc57efb3c99593c2a5a98d12b641. 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: 13
| SHA256 hash: | c879b4f8bd38ddc5797d625effb573e7478dbc57efb3c99593c2a5a98d12b641 |
|---|---|
| SHA3-384 hash: | c0e8ae903e16be4ff6edcf7f8303b25ccceda8285607ca22dcc3e047b805b670493d570a17a5dd25b09a5e148451cf6f |
| SHA1 hash: | 8477c678ac86cb55a914d79cc28b304547079d0e |
| MD5 hash: | c05067dbe78d0c9625f420d1b3b03176 |
| humanhash: | hydrogen-undress-carolina-double |
| File name: | 78bd260d.exe |
| Download: | download sample |
| Signature | CobaltStrike |
| File size: | 3'922'432 bytes |
| First seen: | 2023-07-05 08:00:56 UTC |
| Last seen: | 2023-07-05 08:39:30 UTC |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | c03be36e8e27ac7c4e63c8b17354eae1 (1 x CobaltStrike) |
| ssdeep | 49152:GyjUxaxbgxB5PhmMVzmMGls+Z49yDM/cNwX+JiukbOAmPSgY:GuyaE5b0ucc+JrAJg |
| Threatray | 271 similar samples on MalwareBazaar |
| TLSH | T16206CF16ABB400F4D976C13C85578A23FFB2B85953719BDB06A496350F23AE12E3E374 |
| TrID | 48.7% (.EXE) Win64 Executable (generic) (10523/12/4) 23.3% (.EXE) Win16 NE executable (generic) (5038/12/1) 9.3% (.EXE) OS/2 Executable (generic) (2029/13) 9.2% (.EXE) Generic Win/DOS Executable (2002/3) 9.2% (.EXE) DOS Executable Generic (2000/1) |
| File icon (PE): |  |
| dhash icon | d89e9e8eaedce831 (1 x CobaltStrike) |
| Reporter |  obfusor |
| Tags: | CobaltStrike exe |
Intelligence
File Origin
# of uploads :
2
# of downloads :
338
Origin country :
HKVendor Threat Intelligence
Malware family:
cobaltstrike
ID:
1
File name:
78bd260d.exe
Verdict:
Malicious activity
Analysis date:
2023-07-05 08:02:23 UTC
Tags:
cobaltstrike
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Result
Verdict:
Malware
Maliciousness:
Behaviour
Sending a custom TCP request
Unauthorized injection to a system process
Result
Malware family:
n/a
Score:
6/10
Tags:
n/a
Behaviour
MalwareBazaar
MeasuringTime
EvasionQueryPerformanceCounter
Verdict:
Malicious
Threat level:
10/10
Confidence:
100%
Tags:
anti-debug cobaltstrike expand greyware lolbin
Result
Verdict:
UNKNOWN
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Verdict:
Unknown
Result
Threat name:
CobaltStrike
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Signature
Allocates memory in foreign processes
C2 URLs / IPs found in malware configuration
Creates a thread in another existing process (thread injection)
Found malware configuration
Injects a PE file into a foreign processes
Injects code into the Windows Explorer (explorer.exe)
Malicious sample detected (through community Yara rule)
System process connects to network (likely due to code injection or exploit)
Writes to foreign memory regions
Yara detected CobaltStrike
Behaviour
Behavior Graph:
Threat name:
Win64.Backdoor.CobaltStrikeBeacon
Status:
Malicious
First seen:
2023-07-05 05:58:52 UTC
File Type:
PE+ (Exe)
Extracted files:
6
AV detection:
19 of 38 (50.00%)
Threat level:
5/5
Detection(s):
Suspicious file
Verdict:
malicious
Label(s):
cobaltstrike
Similar samples:
+ 261 additional samples on MalwareBazaar
Result
Malware family:
cobaltstrike
Score:
10/10
Tags:
family:cobaltstrike botnet:100000000 backdoor trojan
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of WriteProcessMemory
Cobaltstrike
Malware Config
C2 Extraction:
http://119.91.195.178:2053/www/handle/doc
Unpacked files
SH256 hash:
c879b4f8bd38ddc5797d625effb573e7478dbc57efb3c99593c2a5a98d12b641
MD5 hash:
c05067dbe78d0c9625f420d1b3b03176
SHA1 hash:
8477c678ac86cb55a914d79cc28b304547079d0e
Malware family:
CobaltStrike
Verdict:
Malicious
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
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: | CobaltStrikeBeacon |
|---|---|
| Author: | ditekshen, enzo & Elastic |
| 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_Sleep_Decoder_Indicator |
|---|---|
| Author: | yara@s3c.za.net |
| Description: | Detects CobaltStrike sleep_mask decoder |
| Rule name: | CobaltStrike_Sleeve_BeaconLoader_VA_x64_o_v4_3_v4_4_v4_5_and_v4_6 |
|---|---|
| Author: | gssincla@google.com |
| Description: | Cobalt Strike's sleeve/BeaconLoader.VA.x64.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 |
| Rule name: | CobaltStrike_Sleeve_Beacon_x64_v4_4_v_4_5_and_v4_6 |
|---|---|
| Author: | gssincla@google.com |
| Description: | Cobalt Strike's sleeve/beacon.x64.dll Versions 4.4 through at least 4.6 |
| Reference: | https://cloud.google.com/blog/products/identity-security/making-cobalt-strike-harder-for-threat-actors-to-abuse |
| Rule name: | CobaltStrike__Sleeve_BeaconLoader_VA_x64_o_v4_3_v4_4_v4_5_and_v4_6 |
|---|---|
| Author: | gssincla@google.com |
| Rule name: | CobaltStrike__Sleeve_Beacon_x64_v4_4_v_4_5_and_v4_6 |
|---|---|
| Author: | gssincla@google.com |
| Rule name: | CS_beacon |
|---|---|
| Author: | Etienne Maynier tek@randhome.io |
| Rule name: | HKTL_CobaltStrike_Beacon_4_2_Decrypt |
|---|---|
| Author: | Elastic |
| Description: | Identifies deobfuscation routine used in Cobalt Strike Beacon DLL version 4.2 |
| Reference: | https://www.elastic.co/blog/detecting-cobalt-strike-with-memory-signatures |
| 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_CobaltStrike_SleepMask_Jul22 |
|---|---|
| Author: | CodeX |
| Description: | Detects static bytes in Cobalt Strike 4.5 sleep mask function that are not obfuscated |
| Reference: | https://codex-7.gitbook.io/codexs-terminal-window/blue-team/detecting-cobalt-strike/sleep-mask-kit-iocs |
| 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: | MALW_cobaltrike |
|---|---|
| Author: | Felix Bilstein - yara-signator at cocacoding dot com |
| Description: | Rule to detect CobaltStrike beacon |
| Reference: | https://malpedia.caad.fkie.fraunhofer.de/details/win.cobalt_strike |
| Rule name: | meth_stackstrings |
|---|---|
| Author: | Willi Ballenthin |
| Rule name: | ReflectiveLoader |
|---|---|
| Author: | Florian Roth (Nextron Systems) |
| Description: | Detects a unspecified hack tool, crack or malware using a reflective loader - no hard match - further investigation recommended |
| Reference: | Internal Research |
| Rule name: | Trojan_Raw_Generic_4 |
|---|---|
| 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 |
| Rule name: | Windows_Trojan_CobaltStrike_1787eef5 |
|---|---|
| Author: | Elastic Security |
| Description: | CS shellcode variants |
| Rule name: | Windows_Trojan_CobaltStrike_663fc95d |
|---|---|
| Author: | Elastic Security |
| Description: | Identifies CobaltStrike via unidentified function code |
| Rule name: | Windows_Trojan_CobaltStrike_b54b94ac |
|---|---|
| Description: | Rule for beacon sleep obfuscation routine |
| Rule name: | Windows_Trojan_CobaltStrike_ee756db7 |
|---|---|
| Author: | Elastic Security |
| Description: | Attempts to detect Cobalt Strike based on strings found in BEACON |
| Rule name: | Windows_Trojan_CobaltStrike_f0b627fc |
|---|---|
| Description: | Rule for beacon reflective loader |
| 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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