MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a2bbd3bc733fb3addfb364d282edcb686292889b5850fa3c913ddc287745ed4e. 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: 11


Intelligence 11 IOCs YARA 2 File information Comments 1
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a2bbd3bc733fb3addfb364d282edcb686292889b5850fa3c913ddc287745ed4e
SHA3-384 hash: 7656dddaa58237a81492091aa05f863f78c4ca729108864238a6e8dff1e9fa67d646c9c29a53b143ce67bb7beef8f03a
SHA1 hash: c46d28055716abf401071ec39ea2d8db477ea1f1
MD5 hash: 1f30cac348c3eac121f8a248555fccdd
humanhash: ceiling-black-crazy-sixteen
File name:Nuevo pedido _WJO-001,pdf.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:574'120 bytes
First seen:2021-05-14 05:47:26 UTC
Last seen:2021-05-14 06:46:29 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash da84464fb1fefd0829e366a614c59044 (2 x RemcosRAT, 1 x NetWire, 1 x Formbook)
ssdeep 6144:Tc/Z6uWRs695nvBqHMbeqMBgLh06/yz0Utp2G0kyq73oCGU9hZ5iTCcFse:I/Z6Ls6TrMKt060cGn17Y6nIFj
Threatray 214 similar samples on MalwareBazaar
TLSH CFC48EF2E2E00477D22F5D748D46A670A8277E922E9418756BFC3E489F397C12C1B25E
Reporter lowmal3
Tags:RemcosRAT

Intelligence

File Origin
# of uploads :
3
# of downloads :
111
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Nuevo pedido _WJO-001,pdf.exe
Verdict:
Malicious activity
Analysis date:
2021-05-14 05:53:15 UTC
Tags:
installer
Link:
https://app.any.run/tasks/b2057da7-bf9b-4b86-8009-6d6fc97510ca

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Remcos
Create hunting rule
Link:
https://www.capesandbox.com/analysis/156404/
Detection(s):
PUA.Win.Packer.BorlandDelphi-15
Create hunting rule

PUA.Win.Adware.Slugin-6840354-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
DNS request
Sending a custom TCP request
Creating a file
Deleting a recently created file
Launching a process
Running batch commands
Creating a process with a hidden window
Launching cmd.exe command interpreter
Creating a process from a recently created file
Launching the default Windows debugger (dwwin.exe)
Using the Windows Management Instrumentation requests
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Unauthorized injection to a system process
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:
Remcos
Create hunting rule
Detection:
malicious
Classification:
rans.troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/781588
Signature
Adds a directory exclusion to Windows Defender
Allocates memory in foreign processes
C2 URLs / IPs found in malware configuration
Contains functionality to inject code into remote processes
Contains functionality to steal Chrome passwords or cookies
Contains functionality to steal Firefox passwords or cookies
Contains functionalty to change the wallpaper
Creates a thread in another existing process (thread injection)
Delayed program exit found
Detected Remcos RAT
DLL side loading technique detected
Drops executables to the windows directory (C:\Windows) and starts them
Drops PE files to the user root directory
Found malware configuration
Injects a PE file into a foreign processes
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
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
Suspicious powershell command line found
Uses dynamic DNS services
Writes to foreign memory regions
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 413984 Sample: Nuevo pedido _WJO-001,pdf.exe Startdate: 14/05/2021 Architecture: WINDOWS Score: 100 78 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->78 80 Found malware configuration 2->80 82 Malicious sample detected (through community Yara rule) 2->82 84 8 other signatures 2->84 11 Nuevo pedido _WJO-001,pdf.exe 1 25 2->11         started        16 Xcopos.exe 16 2->16         started        18 Xcopos.exe 16 2->18         started        process3 dnsIp4 64 onedrive.live.com 11->64 66 dm-files.fe.1drv.com 11->66 68 8fvvcg.dm.files.1drv.com 11->68 50 C:\Users\Public\Xcopos\Xcopos.exe, PE32 11->50 dropped 52 C:\Users\Public52etplwiz.exe, PE32+ 11->52 dropped 54 C:\Users\Public54ETUTILS.dll, PE32+ 11->54 dropped 100 Writes to foreign memory regions 11->100 102 Allocates memory in foreign processes 11->102 104 Creates a thread in another existing process (thread injection) 11->104 20 cmd.exe 1 11->20         started        22 logagent.exe 2 3 11->22         started        70 onedrive.live.com 16->70 74 2 other IPs or domains 16->74 106 Multi AV Scanner detection for dropped file 16->106 108 Machine Learning detection for dropped file 16->108 110 Injects a PE file into a foreign processes 16->110 26 logagent.exe 16->26         started        72 onedrive.live.com 18->72 76 2 other IPs or domains 18->76 28 secinit.exe 18->28         started        file5 signatures6 process7 dnsIp8 30 cmd.exe 5 20->30         started        34 conhost.exe 20->34         started        60 poiarmex247.ddns.net 79.134.225.7, 49730, 8634 FINK-TELECOM-SERVICESCH Switzerland 22->60 62 192.168.2.1 unknown unknown 22->62 86 Contains functionalty to change the wallpaper 22->86 88 Contains functionality to steal Chrome passwords or cookies 22->88 90 Contains functionality to inject code into remote processes 22->90 92 2 other signatures 22->92 signatures9 process10 file11 56 C:\Windows \System3256etplwiz.exe, PE32+ 30->56 dropped 58 C:\Windows \System3258ETUTILS.dll, PE32+ 30->58 dropped 112 Drops executables to the windows directory (C:\Windows) and starts them 30->112 36 Netplwiz.exe 30->36         started        38 conhost.exe 30->38         started        signatures12 process13 process14 40 cmd.exe 1 36->40         started        signatures15 94 Suspicious powershell command line found 40->94 96 Adds a directory exclusion to Windows Defender 40->96 43 powershell.exe 26 40->43         started        46 conhost.exe 40->46         started        process16 signatures17 98 DLL side loading technique detected 43->98 48 conhost.exe 43->48         started        process18
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/a2bbd3bc733fb3addfb364d282edcb686292889b5850fa3c913ddc287745ed4e/
Threat name:
Win32.Backdoor.Remcos
Create hunting rule
Status:
Malicious
First seen:
2021-05-13 16:14:19 UTC
AV detection:
21 of 29 (72.41%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=uk55hpdth6z23x5tmtjif3olnbrjfce3lbipuperhxocq52f5vha._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
2e928af33de11fedaf5d0c388e96ac67509b64bd445a3f4a576f46ec2a0d5374
RemcosRAT
34ae6e94fd8ce101fadff4baf68d7c0b8bf606d1796b7c8199e7d45a9bc57a02
RemcosRAT
44130b6c18abaaea8d59ba7ef447b231e2bde5ae9fd572104ca51136e5e35150
RemcosRAT
46d5443a4f41fb67709a7f323f12a2835d22167bb06447c72b9c5115fbd8a028
RemcosRAT
4fa4ab75bd8f5439907cadec8c16b8e006045e73bc45adbbd5ab368b20cf2c5f
RemcosRAT
7863e8d94d7f595345e13ed45b8600c86d3a8bea389ca25950dfae8a9d94195a
RemcosRAT
995f29caf80a4902430611c45e0619adbcd60e3a9f283a562fce6bd7baebc075
RemcosRAT
a0bb5a244b144a8e10087fd70a04580c3bb8c4c8add7da671a06f10020473004
RemcosRAT
c3ce62a44812edeca97182d5f26639b222ebe684021e7a7b922a499bd32d7f95
RemcosRAT
f4dcc52b899bbe0d34ffbb44032c0186953c174beaf647c0556c7e71385c6bb4
RemcosRAT
+ 204 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos persistence rat
Link:
https://tria.ge/reports/210514-d19qn2v5d2/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Adds Run key to start application
Loads dropped DLL
Executes dropped EXE
Remcos
Malware Config
C2 Extraction:
poiarmex247.ddns.net:8634
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/a2bbd3bc733fb3addfb364d282edcb686292889b5850fa3c913ddc287745ed4e

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_KB_CERT_56f008e69a7c4c3feb389c66eaf58259
Create hunting rule
Author:ditekSHen
Description:Detects executables signed with stolen, revoked or invalid certificates
Rule name:MALWARE_Win_DLAgent07
Create hunting rule
Author:ditekSHen
Description:Detects delf downloader agent

File information

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

Malspam

RemcosRAT

Executable exe a2bbd3bc733fb3addfb364d282edcb686292889b5850fa3c913ddc287745ed4e

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/156404/

Comments


Avatar
a̵c̵c̸i̵d̷e̵n̷t̴a̷l̴r̵e̷b̸e̴l̸ commented on 2021-05-14 06:08:14 UTC

============================================================
MBC behaviors list (github.com/accidentalrebel/mbcscan):
============================================================
0) [B0001.032] Anti-Behavioral Analysis::Timing/Delay Check GetTickCount
1) [B0009.029] Anti-Behavioral Analysis::Instruction Testing
2) [F0002.002] Collection::Polling
4) [C0026.002] Data Micro-objective::XOR::Encode Data
6) [C0051] File System Micro-objective::Read File
7) [C0052] File System Micro-objective::Writes File
8) [C0007] Memory Micro-objective::Allocate Memory
9) [C0036.004] Operating System Micro-objective::Create Registry Key::Registry
10) [C0036.003] Operating System Micro-objective::Open Registry Key::Registry
11) [C0036.006] Operating System Micro-objective::Query Registry Value::Registry
12) [C0038] Process Micro-objective::Create Thread
13) [C0041] Process Micro-objective::Set Thread Local Storage Value
14) [C0018] Process Micro-objective::Terminate Process