MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4cbf921ca59d8725280de0d34864dc44eb98fadde5ea010683a8f8820eb3b803. 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


RemcosRAT


Vendor detections: 15


Intelligence 15 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4cbf921ca59d8725280de0d34864dc44eb98fadde5ea010683a8f8820eb3b803
SHA3-384 hash: 011615ab09be897bc33e80635fb7a029fde422469d68f496336630d3a1460c215ed49c6542ff182a435f964b446279d2
SHA1 hash: 004fe0732d9065590386bbcc13b834d6bb39d07f
MD5 hash: 9140ccdcddf8331c3204be8d3eadeb33
humanhash: uniform-ohio-helium-grey
File name:9140ccdcddf8331c3204be8d3eadeb33.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:764'416 bytes
First seen:2022-11-25 17:55:12 UTC
Last seen:2022-11-25 19:47:29 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'647 x AgentTesla, 19'451 x Formbook, 12'201 x SnakeKeylogger)
ssdeep 12288:RqhmZJbxpDFJxbxmnq2Co4a5mJ2pKBaOtg4e/uKy8Kt58bLjKj3/4vjSC:RQixh3OFK0+e/u8KvynKj3/zC
TLSH T152F46CDF59613E08C29CBAB0681734887E9194504548E1E4F7E91BDA5A3BFBDCB8123F
TrID 63.0% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
11.2% (.SCR) Windows screen saver (13097/50/3)
9.0% (.EXE) Win64 Executable (generic) (10523/12/4)
5.6% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
3.8% (.EXE) Win32 Executable (generic) (4505/5/1)
Reporter abuse_ch
Tags:exe RemcosRAT

Intelligence

File Origin
# of uploads :
2
# of downloads :
253
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
9140ccdcddf8331c3204be8d3eadeb33.exe
Verdict:
Malicious activity
Analysis date:
2022-11-25 17:58:07 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/2b3f2d47-301f-4ea2-bf2e-5ed7acccc887

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/338542/
Detection(s):
SecuriteInfo.com.Trojan.Packed2.44597.4879.18693.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Unauthorized injection to a recently created process
Launching cmd.exe command interpreter
Launching a process
Running batch commands
Creating a process with a hidden window
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/638101b5559d07a06f47752f/reports/fbd93515-7464-46e4-81f3-231a9328b43a/overview
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:
REMCOS
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/9332ce97-5bba-4965-9e26-19caa066869c
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1121316
Signature
.NET source code contains potential unpacker
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Creates an autostart registry key pointing to binary in C:\Windows
Detected Remcos RAT
Disables UAC (registry)
Drops executables to the windows directory (C:\Windows) and starts them
Injects a PE file into a foreign processes
Installs a global keyboard hook
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Uses cmd line tools excessively to alter registry or file data
Uses dynamic DNS services
Uses ping.exe to check the status of other devices and networks
Uses ping.exe to sleep
Yara detected AntiVM3
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 754034 Sample: ZLCFQ4d82f.exe Startdate: 25/11/2022 Architecture: WINDOWS Score: 100 66 gcrozona.duckdns.org 2->66 78 Malicious sample detected (through community Yara rule) 2->78 80 Antivirus detection for URL or domain 2->80 82 Multi AV Scanner detection for dropped file 2->82 84 10 other signatures 2->84 12 ZLCFQ4d82f.exe 3 2->12         started        16 Microsoft Intel Audios.exe 2 2->16         started        18 Microsoft Intel Audios.exe 2 2->18         started        signatures3 process4 file5 64 C:\Users\user\AppData\...\ZLCFQ4d82f.exe.log, ASCII 12->64 dropped 94 Injects a PE file into a foreign processes 12->94 20 ZLCFQ4d82f.exe 1 5 12->20         started        24 ZLCFQ4d82f.exe 12->24         started        96 Drops executables to the windows directory (C:\Windows) and starts them 16->96 26 Microsoft Intel Audios.exe 16->26         started        28 Microsoft Intel Audios.exe 18->28         started        signatures6 process7 file8 60 C:\Windows\...\Microsoft Intel Audios.exe, PE32 20->60 dropped 62 Microsoft Intel Au...exe:Zone.Identifier, ASCII 20->62 dropped 92 Creates an autostart registry key pointing to binary in C:\Windows 20->92 30 cmd.exe 1 20->30         started        33 cmd.exe 1 20->33         started        signatures9 process10 signatures11 98 Uses ping.exe to sleep 30->98 35 Microsoft Intel Audios.exe 3 30->35         started        38 PING.EXE 1 30->38         started        41 conhost.exe 30->41         started        100 Uses cmd line tools excessively to alter registry or file data 33->100 102 Uses ping.exe to check the status of other devices and networks 33->102 43 reg.exe 1 33->43         started        45 conhost.exe 33->45         started        process12 dnsIp13 86 Injects a PE file into a foreign processes 35->86 47 Microsoft Intel Audios.exe 1 4 35->47         started        68 127.0.0.1 unknown unknown 38->68 88 Disables UAC (registry) 43->88 signatures14 process15 dnsIp16 70 gcrozona.duckdns.org 91.192.100.30, 49710, 49711, 49712 AS-SOFTPLUSCH Switzerland 47->70 72 192.168.2.1 unknown unknown 47->72 74 Detected Remcos RAT 47->74 76 Installs a global keyboard hook 47->76 51 cmd.exe 1 47->51         started        54 iexplore.exe 47->54         started        signatures17 process18 signatures19 90 Uses cmd line tools excessively to alter registry or file data 51->90 56 conhost.exe 51->56         started        58 reg.exe 1 51->58         started        process20
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/4cbf921ca59d8725280de0d34864dc44eb98fadde5ea010683a8f8820eb3b803/
Threat name:
ByteCode-MSIL.Spyware.SnakeLogger
Create hunting rule
Status:
Malicious
First seen:
2022-11-24 22:24:00 UTC
File Type:
PE (.Net Exe)
Extracted files:
13
AV detection:
24 of 41 (58.54%)
Threat level:
  2/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=js7zehfftwdskkan4djuqzg4itvzr6w54xvacbudvd4iedvtxabq._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:nov 24th evasion persistence rat trojan
Link:
https://tria.ge/reports/221125-wh1m4add26/
Behaviour
Modifies registry key
Runs ping.exe
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Drops file in Windows directory
Suspicious use of SetThreadContext
Adds Run key to start application
Checks computer location settings
Loads dropped DLL
Executes dropped EXE
Remcos
UAC bypass
Malware Config
C2 Extraction:
gcrozona.duckdns.org:6062
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/ea406d17-fd7d-43bd-8daf-225e51e048b8
Unpacked files
SH256 hash:
8fa1decb7cec870b03730f146a4d4108e25c0548b48527b83b2109084ab8b5c4
MD5 hash:
9522282a8ff952faca4f887c97bcb6d7
SHA1 hash:
eb64427783da1493c0a08298050d31790f0e5f2a
Link:
https://www.unpac.me/results/6175a460-0981-4b32-af46-9028dccf72ad/
SH256 hash:
2310d8f49412769bbb634a16cb272a77dcde3104405155e811d21a88712e4d13
MD5 hash:
81decf81e0f22a06673849e16ff57b01
SHA1 hash:
de0023dc4f84a29cf2ea6238de09ba7f8deaf3cb
Detections:
Remcos
Create hunting rule
win_remcos_auto
Create hunting rule
win_remcos_g0
Create hunting rule
Link:
https://www.unpac.me/results/6175a460-0981-4b32-af46-9028dccf72ad/
Parent samples :
05e1c9b65c5c34d39abe5682f747ef5debcc931d768f0023644a39233a553405
4cbf921ca59d8725280de0d34864dc44eb98fadde5ea010683a8f8820eb3b803
SH256 hash:
7f272c4db499b1501a5ea1711d23de0e6a0c07faf16275e9b01722dae889c7c9
MD5 hash:
dd8b9511dda8eb7c84e1621046828883
SHA1 hash:
7f715270ffcadcba5c3148d2a0cecfaaf6c2e805
Link:
https://www.unpac.me/results/6175a460-0981-4b32-af46-9028dccf72ad/
SH256 hash:
6ee78f081c4109a1257c2b7e12f329c47dd40421cfab711ed56d44c51956b93b
MD5 hash:
d70e1b1067cb815817319d592f18a2ba
SHA1 hash:
7b75fb05e0c5a8b4285a8f563ca9911144accd77
Link:
https://www.unpac.me/results/6175a460-0981-4b32-af46-9028dccf72ad/
SH256 hash:
ab19f28c700d64814b0c55df868c30dfb94e0a1f9fb6f7bca05bac6eb78a4e52
MD5 hash:
1f2a6c02dcf9aa00a28a5039fb5b8ce0
SHA1 hash:
1ef480867d39b98368af7586a8e6ba38c0c3893a
Link:
https://www.unpac.me/results/6175a460-0981-4b32-af46-9028dccf72ad/
SH256 hash:
4cbf921ca59d8725280de0d34864dc44eb98fadde5ea010683a8f8820eb3b803
MD5 hash:
9140ccdcddf8331c3204be8d3eadeb33
SHA1 hash:
004fe0732d9065590386bbcc13b834d6bb39d07f
Link:
https://www.unpac.me/results/6175a460-0981-4b32-af46-9028dccf72ad/
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/4cbf921ca59d/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/4cbf921ca59d8725280de0d34864dc44eb98fadde5ea010683a8f8820eb3b803

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_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash

File information

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

Web download

RemcosRAT

Executable exe 4cbf921ca59d8725280de0d34864dc44eb98fadde5ea010683a8f8820eb3b803

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/2272201/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/338542/

Comments