MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 efc8bd338786404ca4dede0c7c1051927dff563e408eaa007d0c320b264b86e8. 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: 5


Intelligence 5 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: efc8bd338786404ca4dede0c7c1051927dff563e408eaa007d0c320b264b86e8
SHA3-384 hash: 6c00d6187bf55a8935e50efb6f64a9a2560368246de9ba6f46c66e10dfb4a22a5d207ce7661d63b5033d6dc78d3de034
SHA1 hash: f03cdcb874f073d03342a6f11cde40dd6b57504c
MD5 hash: 5db692abf569a29ce673e2cdf88b3a82
humanhash: one-april-missouri-football
File name:efc8bd338786404ca4dede0c7c1051927dff563e408eaa007d0c320b264b86e8
Download: download sample
Signature CobaltStrike
Create hunting rule
File size:5'119'948 bytes
First seen:2021-01-28 13:32:06 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 809ea02d92fea89353f33279290e8c9f (4 x CobaltStrike, 1 x DemonWare, 1 x ValleyRAT)
ssdeep 98304:ZtLJ4X3IT06wWXuycm/iAq4Evt4vA1pYAWBcrKFrSfSnVsiDcnocJK:ZVKWYbycm/iArvCYIeSEs5ock
Threatray 26 similar samples on MalwareBazaar
TLSH 22363386E2616CFBE7F68939DC628046F876781753B8C2DF529491A19FD3B40683EF10
Reporter JAMESWT_WT
Tags:47.105.186.146 CobaltStrike

Intelligence

File Origin
# of uploads :
1
# of downloads :
493
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
efc8bd338786404ca4dede0c7c1051927dff563e408eaa007d0c320b264b86e8
Verdict:
No threats detected
Analysis date:
2021-01-28 13:36:44 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/a44d2e45-389a-4d98-8458-8e1541162ce6

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/114230/
Detection(s):
SecuriteInfo.com.Trojan.Encoder.31657.7773.30126.UNOFFICIAL
Create hunting rule

Result
Verdict:
Clean
Maliciousness:

Behaviour
Creating a file in the %temp% subdirectories
Connection attempt
Sending a UDP request
Creating a window
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.
Result
Threat name:
Unknown
Detection:
malicious
Classification:
n/a
Score:
56 / 100
Link:
https://www.joesandbox.com/analysis/592879
Signature
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Behaviour
Behavior Graph:
Download SVG
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/efc8bd338786404ca4dede0c7c1051927dff563e408eaa007d0c320b264b86e8/
Threat name:
Win64.Trojan.Rozena
Create hunting rule
Status:
Malicious
First seen:
2021-01-22 22:33:56 UTC
File Type:
PE+ (Exe)
Extracted files:
246
AV detection:
16 of 29 (55.17%)
Threat level:
  5/5
Verdict:
unknown
Similar samples:
00383e0cef95de02bac4a4725234f5430202e33f1d80b1dd299d682590e6d2f9
CobaltStrike
0ee680c945bcd40a5f26f165e043509c9dd99fa0d85a8812aa359477a05e82fc
CobaltStrike
30eb8727af3b8a2f4551574c7d826e9f27480e79d242b92d392b1f64091acf12
CobaltStrike
6084cf861e6b10480c4d05cd3aefb10a92820b191d1a8813154155fa1ca7a88c
CobaltStrike
69cd9793d80b5e5d7f5bf377822dc573c84ef939ede4eedd892fd1b757435bff
CobaltStrike
71bb29dfc07190aeace9d750fcb2e9a66a8abebab3c6d2c40eb0b3ce93e4c36f
CobaltStrike
83acd77bd1b76095992046c1cd53fd0fb4f0ae9f22f410facf174f4e1ce2f475
CobaltStrike
8d8a8acc157f92723bfbe61fd04220d80d171908ee97231d15fad5b5515a0b2e
CobaltStrike
9cc659b2ca813ac76fd302254522e11352627942aa96a256da9f82ea269e6d94
CobaltStrike
ea1213c0a684662e8305cfe1c6eeebbb12a9d1404e7571438d3730cc1df1caab
CobaltStrike
+ 16 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  7/10
Tags:
pyinstaller
Link:
https://tria.ge/reports/210128-3762awx2na/
Behaviour
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of WriteProcessMemory
JavaScript code in executable
Loads dropped DLL
Unpacked files
SH256 hash:
efc8bd338786404ca4dede0c7c1051927dff563e408eaa007d0c320b264b86e8
MD5 hash:
5db692abf569a29ce673e2cdf88b3a82
SHA1 hash:
f03cdcb874f073d03342a6f11cde40dd6b57504c
Link:
https://www.unpac.me/results/35af19d4-c086-470d-a2ab-839336efa027/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Rozena
Score:
0.80
Link:
https://yomi.yoroi.company/submissions/efc8bd338786404ca4dede0c7c1051927dff563e408eaa007d0c320b264b86e8

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_File_pyinstaller
Create hunting rule
Author:Didier Stevens (https://DidierStevens.com)
Description:Detect PE file produced by pyinstaller
Reference:https://isc.sans.edu/diary/21057
Rule name:PyInstaller
Create hunting rule
Author:@bartblaze
Description:Identifies executable converted using PyInstaller.
Rule name:WinPayloads_Payload
Create hunting rule
Author:Florian Roth
Description:Detects WinPayloads Payload
Reference:https://github.com/nccgroup/Winpayloads

File information

The table below shows additional information about this malware sample such as delivery method and external references.

  
X
https://twitter.com/malwrhunterteam/status/1354749385041711105?s=20
Cape
Cape
https://www.capesandbox.com/analysis/114230/

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