MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 ab81d8b1ca3107158b9b8ac1a0d34d79622aa882e20165d2407792287a19e9a7. 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: 12


Intelligence 12 IOCs YARA 6 File information Comments 1
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: ab81d8b1ca3107158b9b8ac1a0d34d79622aa882e20165d2407792287a19e9a7
SHA3-384 hash: fbc20c119bde68b8ee43f16ba916b922caa5e39a56a0d2edeaf0872e459c0fd0cac53a2a1601e0e6776abfe698cbb17c
SHA1 hash: 2d7d22fbf6d94e99f469284904c31f76ed7c62ae
MD5 hash: d70b297a962128752d2f8ebaf4aa8bb9
humanhash: oxygen-burger-early-nuts
File name:d70b297a962128752d2f8ebaf4aa8bb9
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:1'249'280 bytes
First seen:2022-08-12 12:32:59 UTC
Last seen:2022-08-12 14:34:51 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'657 x AgentTesla, 19'468 x Formbook, 12'206 x SnakeKeylogger)
ssdeep 24576:ERt6YehOm8JHvAehTZOnUaMzida8aG+PrCQRtFfEze1sO17:ERwYehOb5TgUaMzN84CQ36e1sU
Threatray 1'640 similar samples on MalwareBazaar
TLSH T1954512465DE2BFE3C5902B350D78BA9D79DA36709B0AD92B61B170FC2BB0ED431442B4
TrID 72.5% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.4% (.EXE) Win64 Executable (generic) (10523/12/4)
6.5% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.4% (.EXE) Win32 Executable (generic) (4505/5/1)
2.0% (.EXE) OS/2 Executable (generic) (2029/13)
File icon (PE):PE icon
dhash icon 68799830a0303913 (1 x RemcosRAT)
Reporter zbetcheckin
Tags:32 exe RemcosRAT

Intelligence

File Origin
# of uploads :
2
# of downloads :
377
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
d70b297a962128752d2f8ebaf4aa8bb9
Verdict:
Suspicious activity
Analysis date:
2022-08-12 12:35:12 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/519c4bf8-9fce-45cd-9b84-d95d81b75279

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/298222/
Detection(s):
SecuriteInfo.com.W32.AIDetectNet.01.16553.25147.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Сreating synchronization primitives
Launching a process
Creating a process with a hidden window
Sending a custom TCP request
Creating a file in the %AppData% subdirectories
Creating a file
DNS request
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/62f648f8f6ec33747d9d7bc2/reports/13e6aac5-0148-42e7-85b4-79a0ad0fedfa/overview
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.
Malware family:
REMCOS
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/28d415a0-3d67-4faa-a9dc-b816e6529ebd
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1050569
Signature
.NET source code contains potential unpacker
.NET source code contains very large array initializations
Allocates memory in foreign processes
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
C2 URLs / IPs found in malware configuration
Encrypted powershell cmdline option found
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 domain / URL
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Uses dynamic DNS services
Writes to foreign memory regions
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 683079 Sample: zPBIIhNeeO Startdate: 12/08/2022 Architecture: WINDOWS Score: 100 44 sfcarbotexpl.ddns.net 2->44 48 Multi AV Scanner detection for domain / URL 2->48 50 Malicious sample detected (through community Yara rule) 2->50 52 Antivirus / Scanner detection for submitted sample 2->52 54 7 other signatures 2->54 8 zPBIIhNeeO.exe 1 5 2->8         started        12 Ldutm.exe 2 2->12         started        14 Ldutm.exe 1 2->14         started        signatures3 process4 file5 36 C:\Users\user\AppData\Roaming\...\Ldutm.exe, PE32 8->36 dropped 38 C:\Users\user\...\Ldutm.exe:Zone.Identifier, ASCII 8->38 dropped 40 C:\Users\user\AppData\...\zPBIIhNeeO.exe.log, ASCII 8->40 dropped 56 Encrypted powershell cmdline option found 8->56 58 Writes to foreign memory regions 8->58 60 Allocates memory in foreign processes 8->60 16 InstallUtil.exe 2 3 8->16         started        20 powershell.exe 18 8->20         started        62 Antivirus detection for dropped file 12->62 64 Multi AV Scanner detection for dropped file 12->64 66 Machine Learning detection for dropped file 12->66 22 powershell.exe 12 12->22         started        24 InstallUtil.exe 12->24         started        68 Injects a PE file into a foreign processes 14->68 26 powershell.exe 14->26         started        28 InstallUtil.exe 14->28         started        signatures6 process7 dnsIp8 42 sfcarbotexpl.ddns.net 184.75.221.163, 44850, 49765, 49766 AMANAHA-NEWCA Canada 16->42 46 Installs a global keyboard hook 16->46 30 conhost.exe 20->30         started        32 conhost.exe 22->32         started        34 conhost.exe 26->34         started        signatures9 process10
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/ab81d8b1ca3107158b9b8ac1a0d34d79622aa882e20165d2407792287a19e9a7/
Threat name:
Win32.Downloader.Seraph
Create hunting rule
Status:
Malicious
First seen:
2022-08-12 12:33:09 UTC
File Type:
PE (.Net Exe)
Extracted files:
3
AV detection:
19 of 26 (73.08%)
Threat level:
  3/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=voa5rmokgedrlc43rla2bu2npfrcvkec4iawlusao6jcq6qz5gtq._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
22f9a7a8f42d3d3c49c8868d8013d56e54fcdcde9c020fb03bad42903f77279c
RemcosRAT
253ec23e3db30683bfed20ee25778f5632b700aaf411c498cb092ea18e0eb5cc
RemcosRAT
77ed7f099d383a993b3ee6383ec343a3eda6b117f53febd01a1dc10c63cfea09
RemcosRAT
78a6685e0ab1770e8347c178a31820c411b122fd182c63607663a5a4a8d17e29
RemcosRAT
7d237aef354c63c3618c8c8df4718e2c5056edd90702bc77a233944e2c42de9b
RemcosRAT
a6abf72d95dac9ba6e6e4b53d9cbcd013846660a18ac5b9eeacb6cd87c783a2c
RemcosRAT
b06040b023873e257e3cc5d803186e714ad4de74fd3bb305205550e5ce5233f7
RemcosRAT
b0e78152cf5f5eca9be7cc47e833600e77db47786c09cc2be451f310c50881d9
RemcosRAT
cce110eed95c36bf618669b1a290ee90b5152ee9c660b6b37f3e11dca7431419
RemcosRAT
e7a3522e5f2bea8656f4a586387628402e469f461e23463459c69dc3274c39ae
RemcosRAT
+ 1'630 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:fridays day persistence rat
Link:
https://tria.ge/reports/220812-pq62hsdbfm/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Adds Run key to start application
Checks computer location settings
Remcos
Malware Config
C2 Extraction:
sfcarbotexpl.ddns.net:44850
Unpacked files
SH256 hash:
ab81d8b1ca3107158b9b8ac1a0d34d79622aa882e20165d2407792287a19e9a7
MD5 hash:
d70b297a962128752d2f8ebaf4aa8bb9
SHA1 hash:
2d7d22fbf6d94e99f469284904c31f76ed7c62ae
Link:
https://www.unpac.me/results/24f4391b-24e2-4b87-872c-610b178489e6/
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/ab81d8b1ca31/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.38
Link:
https://yomi.yoroi.company/submissions/ab81d8b1ca3107158b9b8ac1a0d34d79622aa882e20165d2407792287a19e9a7

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:INDICATOR_SUSPICIOUS_EXE_UACBypass_EventViewer
Create hunting rule
Author:ditekSHen
Description:detects Windows exceutables potentially bypassing UAC using eventvwr.exe
Rule name:pe_imphash
Create hunting rule
Rule name:Remcos
Create hunting rule
Author:kevoreilly
Description:Remcos Payload
Rule name:REMCOS_RAT_variants
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:win_remcos_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:Detects win.remcos.

File information

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

Web download

RemcosRAT

Executable exe ab81d8b1ca3107158b9b8ac1a0d34d79622aa882e20165d2407792287a19e9a7

(this sample)

  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/2271997/
Cape
Cape
https://www.capesandbox.com/analysis/298222/

Comments


Avatar
zbet commented on 2022-08-12 12:33:03 UTC

url : hxxp://23.95.106.126/420/vbc.exe