MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 54091d6f7893b5a42baebba2ea94def14f9181a46544633116be5f1772811236. 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: 9


Intelligence 9 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 54091d6f7893b5a42baebba2ea94def14f9181a46544633116be5f1772811236
SHA3-384 hash: 6692da76de19e43952c63dc521394361516e65e08954be61845ac541e5d2fc08f5453deaa4e4cf8a36e3d1cfeb8efdde
SHA1 hash: 9c9c9be86a1721b8f63fe31c60cc9c922a4d248b
MD5 hash: 7336e37ed76a80347f757ab29c8b693e
humanhash: stream-sodium-mexico-earth
File name:photo.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:261'632 bytes
First seen:2020-08-05 11:40:51 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'648 x AgentTesla, 19'452 x Formbook, 12'201 x SnakeKeylogger)
ssdeep 6144:kvTrO8Rt0oIAFnOiGD95m/wG10ez2z79XdQu7Vw4dlnH9fb23iIUBCcWYw:0Txt0vAZGDzdKz2z79S2dlHdf5fw
Threatray 789 similar samples on MalwareBazaar
TLSH 3744CE5C36A0651AF6BA0E3F9C3115838E22F81FDD26D28B6A7611AC457E59CFC30F61
Reporter abuse_ch
Tags:exe RAT RemcosRAT


Avatar
abuse_ch
Malspam distributing RemcosRAT:

HELO: cesales.com
Sending IP: 37.49.229.235
From: Wecon Trading Limited <customerservice@cesales.com>
Subject: Confirm attached document
Attachment: photo.z (contains "photo.exe")

Intelligence

File Origin
# of uploads :
1
# of downloads :
72
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/39463/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending a UDP request
Creating a window
Launching a process
Creating a process with a hidden window
Running batch commands
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/411005
Signature
BOT functionalities found, sample is likely a BOT
Contains functionality to capture and log keystrokes
Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent)
Contains functionality to detect virtual machines (IN, VMware)
Contains functionality to inject code into remote processes
Contains functionality to steal Chrome passwords or cookies
Contains functionality to steal Firefox passwords or cookies
Detected Remcos RAT
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)
Sigma detected: Remcos
Sigma detected: Scheduled temp file as task from temp location
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Uses ping.exe to check the status of other devices and networks
Uses ping.exe to sleep
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected AntiVM_3
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 257788 Sample: photo.exe Startdate: 05/08/2020 Architecture: WINDOWS Score: 100 78 Malicious sample detected (through community Yara rule) 2->78 80 Sigma detected: Scheduled temp file as task from temp location 2->80 82 Detected Remcos RAT 2->82 84 9 other signatures 2->84 10 photo.exe 7 2->10         started        14 remcos.exe 4 2->14         started        16 remcos.exe 4 2->16         started        process3 file4 66 C:\Users\user\AppData\...\INHpvxVKHHLgui.exe, PE32 10->66 dropped 68 C:\...\INHpvxVKHHLgui.exe:Zone.Identifier, ASCII 10->68 dropped 70 C:\Users\user\AppData\Local\...\tmp8DD6.tmp, XML 10->70 dropped 72 C:\Users\user\AppData\Local\...\photo.exe.log, ASCII 10->72 dropped 94 BOT functionalities found, sample is likely a BOT 10->94 96 Contains functionality to detect virtual machines (IN, VMware) 10->96 98 Contains functionality to steal Chrome passwords or cookies 10->98 102 3 other signatures 10->102 18 photo.exe 1 5 10->18         started        21 schtasks.exe 1 10->21         started        100 Injects a PE file into a foreign processes 14->100 23 schtasks.exe 1 14->23         started        25 remcos.exe 14->25         started        signatures5 process6 file7 60 C:\Users\user\AppData\Roaming\...\remcos.exe, PE32 18->60 dropped 62 C:\Users\user\...\remcos.exe:Zone.Identifier, ASCII 18->62 dropped 27 cmd.exe 1 18->27         started        30 conhost.exe 21->30         started        32 conhost.exe 23->32         started        process8 signatures9 104 Uses ping.exe to sleep 27->104 34 remcos.exe 5 27->34         started        38 PING.EXE 1 27->38         started        41 conhost.exe 27->41         started        process10 dnsIp11 64 C:\Users\user\AppData\...\remcos.exe.log, ASCII 34->64 dropped 86 BOT functionalities found, sample is likely a BOT 34->86 88 Machine Learning detection for dropped file 34->88 90 Contains functionality to steal Chrome passwords or cookies 34->90 92 4 other signatures 34->92 43 remcos.exe 1 2 34->43         started        46 schtasks.exe 1 34->46         started        48 remcos.exe 34->48         started        50 remcos.exe 34->50         started        74 127.0.0.1 unknown unknown 38->74 52 schtasks.exe 41->52         started        54 remcos.exe 41->54         started        file12 signatures13 process14 dnsIp15 76 185.244.30.100, 20902, 49740, 49743 DAVID_CRAIGGG Netherlands 43->76 56 conhost.exe 46->56         started        58 conhost.exe 52->58         started        process16
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/54091d6f7893b5a42baebba2ea94def14f9181a46544633116be5f1772811236/
Threat name:
ByteCode-MSIL.Trojan.FormBook
Create hunting rule
Status:
Malicious
First seen:
2020-08-05 10:08:26 UTC
AV detection:
23 of 29 (79.31%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=kqer233yso22ik5oxorovfg66fhzdanemvcggmiwxzpro4ubci3a._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
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RemcosRAT
+ 779 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
rat family:remcos persistence
Link:
https://tria.ge/reports/200805-6xn6yqkscn/
Behaviour
Suspicious use of WriteProcessMemory
Runs ping.exe
Creates scheduled task(s)
Suspicious use of AdjustPrivilegeToken
Suspicious behavior: EnumeratesProcesses
Suspicious use of SetThreadContext
Adds Run key to start application
Loads dropped DLL
Executes dropped EXE
Remcos
Malware Config
C2 Extraction:
185.244.30.100:20902
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.76
Link:
https://yomi.yoroi.company/submissions/54091d6f7893b5a42baebba2ea94def14f9181a46544633116be5f1772811236

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:Remcos
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect Remcos in memory
Rule name:win_remcos_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:autogenerated rule brought to you by yara-signator

File information

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

Malspam

RemcosRAT

zip 4b8d2c7445168b834631180f59d0bab88be9e44e0e703753f0f15e11e0a6600f

RemcosRAT

Executable exe 54091d6f7893b5a42baebba2ea94def14f9181a46544633116be5f1772811236

(this sample)

  
Dropped by
MD5 20fceaaefd006972d41476601ec57588
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/39463/
  
Dropped by
SHA256 4b8d2c7445168b834631180f59d0bab88be9e44e0e703753f0f15e11e0a6600f

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