MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 07cb866df6df9ad51ce01426b0a0466834619e72c2653ff7c25320cc3c0a3f9a. 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 9 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 07cb866df6df9ad51ce01426b0a0466834619e72c2653ff7c25320cc3c0a3f9a
SHA3-384 hash: f02693192c75f12a5dba7cbd834fcd9a5889ed28517b058c8abf89422779079df3240ad8a3c7071a07c3b3bcdc947d9e
SHA1 hash: efffd2231109a8103f1b85da879ee2cfd9e59ba8
MD5 hash: 23195e221bd52fc2ff7bcecef0c6e9af
humanhash: failed-virginia-summer-video
File name:unpaid.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:296'448 bytes
First seen:2021-01-18 07:13:50 UTC
Last seen:2021-01-18 08:50:31 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 3fa489abaee814a61ce0966e1954db55 (12 x Loki, 7 x RemcosRAT, 3 x SnakeKeylogger)
ssdeep 6144:7rT/4GM4T/r+1uqtxxo3zDAUD7aNynNqG7fy+hxFuWk0fubdjT0vwYN:L4GbT/r+Xtcz5+6QiycxQ0fuxG
Threatray 545 similar samples on MalwareBazaar
TLSH 5C54CF3875D1C032C153113547B5CBB28EBE78726AB1A98F7BDA49B94F346E1923930E
Reporter abuse_ch
Tags:exe nVpn RAT RemcosRAT


Avatar
abuse_ch
Malspam distributing RemcosRAT:

HELO: mibm.pl
Sending IP: 64.188.27.72
From: anna.banasiak@mibm.pl
Subject: Paid Invoices 18.01.2021
Attachment: unpaid.r11 (contains "unpaid.exe")

RemcosRAT C2:
nkosarevaocs.duckdns.org:7266 (91.193.75.157)

Pointing to nVpn:

% Information related to '91.193.75.0 - 91.193.75.255'

% Abuse contact for '91.193.75.0 - 91.193.75.255' is 'abuse@privacyfirst.sh'

inetnum: 91.193.75.0 - 91.193.75.255
descr: Moscow, Russia
remarks: This prefix is assigned to The PRIVACYFIRST Project, which
remarks: operates infrastructure jointly used by various VPN service
remarks: providers. We have a very strong focus on privacy and freedom.
remarks: In case of abuse, we encourage all international law enforcement
remarks: agencies to get in touch with our abuse contact. Due to the fact
remarks: that we keep no logs of user activities and only share data when
remarks: it is legally required under our jurisdiction, it is very unlikely
remarks: for a demand of user information to be successful. Still, that
remarks: should not deter you from reaching out.
netname: PRIVACYFIRST-RU2
country: RU
admin-c: TPP15-RIPE
tech-c: TPP15-RIPE
abuse-c: ACRO34258-RIPE
mnt-by: PRIVACYFIRST-MNT
mnt-by: RIPE-NCC-END-MNT
org: ORG-KHd1-RIPE
status: ASSIGNED PI
created: 2012-06-04T11:05:55Z
last-modified: 2021-01-03T20:17:23Z
source: RIPE
sponsoring-org: ORG-MW1-RIPE


Intelligence

File Origin
# of uploads :
2
# of downloads :
115
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
unpaid.exe
Verdict:
Malicious activity
Analysis date:
2021-01-18 07:14:47 UTC
Tags:
rat remcos trojan keylogger stealer
Link:
https://app.any.run/tasks/7d52a1b1-7c4d-48ec-915c-6a2c6bac8b93

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/112407/
Detection(s):
PUA.Win.Downloader.Firseria-6804617-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending a custom TCP request
Unauthorized injection to a recently created process
Creating a file in the %AppData% subdirectories
Creating a file in the %temp% directory
Creating a process from a recently created file
Creating a process with a hidden window
Creating a window
Sending a UDP request
Deleting a recently created file
Running batch commands
DNS request
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Unauthorized injection to a recently created process by context flags manipulation
Setting a global event handler for the keyboard
Sending a TCP request to an infection source
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:
phis.troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/583356
Signature
Contains functionality to capture and log keystrokes
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
Detected unpacking (creates a PE file in dynamic memory)
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)
Maps a DLL or memory area into another process
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: Remcos
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Instant Messenger accounts or passwords
Tries to steal Mail credentials (via file access)
Uses dynamic DNS services
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 340715 Sample: unpaid.exe Startdate: 18/01/2021 Architecture: WINDOWS Score: 100 65 Malicious sample detected (through community Yara rule) 2->65 67 Multi AV Scanner detection for submitted file 2->67 69 Detected Remcos RAT 2->69 71 4 other signatures 2->71 11 unpaid.exe 2->11         started        14 remcos.exe 2->14         started        16 remcos.exe 2->16         started        process3 signatures4 83 Contains functionality to steal Chrome passwords or cookies 11->83 85 Contains functionality to capture and log keystrokes 11->85 87 Contains functionality to inject code into remote processes 11->87 89 2 other signatures 11->89 18 unpaid.exe 4 5 11->18         started        21 remcos.exe 14->21         started        24 remcos.exe 14->24         started        26 remcos.exe 16->26         started        28 remcos.exe 16->28         started        process5 file6 57 C:\Users\user\AppData\Roaming\...\remcos.exe, PE32 18->57 dropped 59 C:\Users\user\...\remcos.exe:Zone.Identifier, ASCII 18->59 dropped 30 wscript.exe 1 18->30         started        73 Maps a DLL or memory area into another process 21->73 32 remcos.exe 21->32         started        34 remcos.exe 26->34         started        signatures7 process8 process9 36 cmd.exe 1 30->36         started        process10 38 remcos.exe 36->38         started        41 conhost.exe 36->41         started        signatures11 75 Multi AV Scanner detection for dropped file 38->75 77 Detected unpacking (creates a PE file in dynamic memory) 38->77 79 Machine Learning detection for dropped file 38->79 81 4 other signatures 38->81 43 remcos.exe 2 3 38->43         started        process12 dnsIp13 63 nkosarevaocs.duckdns.org 91.193.75.157, 49706, 49707, 49720 DAVID_CRAIGGG Serbia 43->63 91 Injects a PE file into a foreign processes 43->91 47 remcos.exe 1 43->47         started        50 remcos.exe 43->50         started        52 remcos.exe 43->52         started        54 8 other processes 43->54 signatures14 process15 dnsIp16 93 Tries to steal Instant Messenger accounts or passwords 47->93 95 Tries to steal Mail credentials (via file access) 47->95 61 192.168.2.1 unknown unknown 54->61 97 Tries to harvest and steal browser information (history, passwords, etc) 54->97 signatures17
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/07cb866df6df9ad51ce01426b0a0466834619e72c2653ff7c25320cc3c0a3f9a/
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=a7fym3pw36nnkhhacqtlbicgna2gdhtsyjst756ckmqmypakh6na._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
11b16ba733f2f4f10ac58021eecaf5668551a73e2a1acfae99745c50bfccbb44
RemcosRAT
26cfb1b24425c97fc4588631b23ca93def5d84efb2300d81bdbbb48443207292
RemcosRAT
485c1301f4bc84bc2d274f53222cf7ca5fbd8af8728d1aaa977a6574f577fb87
RemcosRAT
5ab68910c53ccaea0aa6c9e51fa8ad92433cba369163f99f636973b32abda555
RemcosRAT
c14895a7d0ca2633b565af7c08e77aef32397f4fdc78fd3560d2f23d89aa6d6a
RemcosRAT
c71eac19ad546b1d4e4ed84966072f03236e6d0ed99e6ce94bc19df2bac3b0e1
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e85de613abef99e65212dcd6f8077b03763fa37fa81e7921907c9e9c3859b632
RemcosRAT
f05b74930aa9777625a66d2852fb0b690461ef0b5598d35b2d7959721456600d
RemcosRAT
f2a8ae610f1847b1344ffaa1c252543a9e4f5208b0644be9d8f5d7d6770c9ae2
RemcosRAT
f7e29cbf47c9804eb341836873ea6837be7a46639978f44d9ba2670d47e68d56
RemcosRAT
+ 535 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos persistence rat
Link:
https://tria.ge/reports/210118-tfv7wqw7we/
Behaviour
Suspicious behavior: MapViewOfSection
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Modifies registry class
Suspicious use of SetThreadContext
Adds Run key to start application
Loads dropped DLL
Executes dropped EXE
Remcos
Malware Config
C2 Extraction:
nkosarevaocs.duckdns.org:7266
Unpacked files
SH256 hash:
07cb866df6df9ad51ce01426b0a0466834619e72c2653ff7c25320cc3c0a3f9a
MD5 hash:
23195e221bd52fc2ff7bcecef0c6e9af
SHA1 hash:
efffd2231109a8103f1b85da879ee2cfd9e59ba8
Link:
https://www.unpac.me/results/65a6f817-cd92-4f1c-a051-9504a11cab13/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Remcos
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/07cb866df6df9ad51ce01426b0a0466834619e72c2653ff7c25320cc3c0a3f9a

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:ach_RemcosRAT
Create hunting rule
Author:abuse.ch
Rule name:Chrome_stealer_bin_mem
Create hunting rule
Author:James_inthe_box
Description:Chrome in files like avemaria
Rule name:INDICATOR_SUSPICIOUS_EXE_UACBypass_EventViewer
Create hunting rule
Author:ditekSHen
Description:detects Windows exceutables potentially bypassing UAC using eventvwr.exe
Rule name:Keylog_bin_mem
Create hunting rule
Author:James_inthe_box
Description:Contains Keylog
Rule name:Parallax
Create hunting rule
Author:@bartblaze
Description:Identifies Parallax RAT.
Rule name:Remcos
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect Remcos in memory
Rule name:remcos_rat
Create hunting rule
Author:jeFF0Falltrades
Rule name:REMCOS_RAT_variants
Create hunting rule
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.

822ddff85cb48ddae5a98b53642bf3e3

RemcosRAT

Executable exe 07cb866df6df9ad51ce01426b0a0466834619e72c2653ff7c25320cc3c0a3f9a

(this sample)

  
Dropped by
MD5 822ddff85cb48ddae5a98b53642bf3e3
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/112407/

Comments