MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 aba81a1155ddb5054a5c433eab88203d7551fa52296a98c0f5e376b479da1795. 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: 10


Intelligence 10 IOCs YARA 9 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: aba81a1155ddb5054a5c433eab88203d7551fa52296a98c0f5e376b479da1795
SHA3-384 hash: 0e6690da0351d9d3c0757f0038bf51ee35848240c9224747c8c25a47d841640187ae405017e09491ca9e54986877461c
SHA1 hash: 5a95280a96092e15241b02eaac381fe8839c715d
MD5 hash: 72c3542d202465256af178d3a65d34fd
humanhash: december-golf-nebraska-william
File name:付款凭证04R927.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:1'167'872 bytes
First seen:2020-12-21 07:39:58 UTC
Last seen:2020-12-21 09:34:17 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'661 x AgentTesla, 19'474 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 12288:rMG12n7hCTpSreKFhlbt537Xe0wbd4PkNvfsrciJwUZpA7QHhRI3MgBhKblDR6yd:qsGFrbtA0M+PNciJwapA10
Threatray 1'877 similar samples on MalwareBazaar
TLSH AE45CF2439EE901DF273AFB55BE47592DAAFF7733B03E45E1090038A4A13941DE92639
Reporter abuse_ch
Tags:exe nVpn RAT RemcosRAT


Avatar
abuse_ch
Malspam distributing RemcosRAT:

HELO: vps.kirostip.com
Sending IP: 45.85.90.115
From: han.nguyen <han.nguyen@ascenti.com.vn>
Subject: Reply: Payment Voucher 04R927
Attachment: 付款凭证04R927.iso (contains "付款凭证04R927.exe")

RemcosRAT C2:
mikegrace2020.ddns.net:2991 (79.134.225.9)

Pointing to nVpn:

% Information related to '79.134.225.0 - 79.134.225.127'

% Abuse contact for '79.134.225.0 - 79.134.225.127' is 'abuse@privacyfirst.sh'

inetnum: 79.134.225.0 - 79.134.225.127
netname: PRIVACYFIRST-EU
country: EU
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.
admin-c: TPP15-RIPE
tech-c: TPP15-RIPE
status: ASSIGNED PA
mnt-by: AF15-MNT
org: ORG-TPP6-RIPE
created: 2020-07-14T15:26:02Z
last-modified: 2020-07-14T15:31:06Z
source: RIPE

Intelligence

File Origin
# of uploads :
2
# of downloads :
150
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
付款凭证04R927.exe
Verdict:
Malicious activity
Analysis date:
2020-12-21 07:42:17 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/c3d47fad-9189-455d-a305-670a1fb8d213

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.BehavesLike.Win32.Generic.tc.5554.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
Launching a process
Creating a process with a hidden window
Launching the default Windows debugger (dwwin.exe)
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.
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/567209
Signature
.NET source code contains very large strings
Binary contains a suspicious time stamp
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
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
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 dynamic DNS services
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: 332686 Sample: #U4ed8#U6b3e#U51ed#U8bc104R... Startdate: 21/12/2020 Architecture: WINDOWS Score: 100 66 Malicious sample detected (through community Yara rule) 2->66 68 Multi AV Scanner detection for dropped file 2->68 70 Sigma detected: Scheduled temp file as task from temp location 2->70 72 12 other signatures 2->72 11 #U4ed8#U6b3e#U51ed#U8bc104R927.exe 7 2->11         started        15 remcos.exe 2->15         started        17 remcos.exe 3 2->17         started        process3 file4 56 C:\Users\user\AppData\Roaming\cSBnQkQF.exe, PE32 11->56 dropped 58 C:\Users\...\cSBnQkQF.exe:Zone.Identifier, ASCII 11->58 dropped 60 C:\Users\user\AppData\Local\...\tmp380B.tmp, XML 11->60 dropped 62 C:\...\#U4ed8#U6b3e#U51ed#U8bc104R927.exe.log, ASCII 11->62 dropped 80 Contains functionality to steal Chrome passwords or cookies 11->80 82 Contains functionality to capture and log keystrokes 11->82 84 Contains functionality to inject code into remote processes 11->84 86 Contains functionality to steal Firefox passwords or cookies 11->86 19 #U4ed8#U6b3e#U51ed#U8bc104R927.exe 4 5 11->19         started        22 schtasks.exe 1 11->22         started        88 Injects a PE file into a foreign processes 15->88 24 schtasks.exe 15->24         started        26 remcos.exe 15->26         started        signatures5 process6 file7 52 C:\Users\user\AppData\Roaming\...\remcos.exe, PE32 19->52 dropped 54 C:\Users\user\...\remcos.exe:Zone.Identifier, ASCII 19->54 dropped 28 wscript.exe 1 19->28         started        30 conhost.exe 22->30         started        32 conhost.exe 24->32         started        process8 process9 34 cmd.exe 1 28->34         started        process10 36 remcos.exe 4 34->36         started        39 conhost.exe 34->39         started        signatures11 74 Multi AV Scanner detection for dropped file 36->74 76 Machine Learning detection for dropped file 36->76 78 Injects a PE file into a foreign processes 36->78 41 remcos.exe 36->41         started        44 schtasks.exe 36->44         started        46 remcos.exe 36->46         started        48 2 other processes 36->48 process12 dnsIp13 64 mikegrace2020.ddns.net 79.134.225.9, 2991, 49732 FINK-TELECOM-SERVICESCH Switzerland 41->64 50 conhost.exe 44->50         started        process14
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/aba81a1155ddb5054a5c433eab88203d7551fa52296a98c0f5e376b479da1795/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2020-12-21 05:43:00 UTC
AV detection:
19 of 29 (65.52%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=voubuekv3w2qkss4im7kxcbahv2vd6ssffvjrqhv4n3li6o2c6kq._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
15170d0dbe467efc4e38156ed4e03702ae19af44c100d7df7a75c6dbdb7ac587
RemcosRAT
4791861118e0be776fd14153e2feca7d25f5a91a6c32a997385f5ae272e3d7c8
RemcosRAT
4a94b062dbb9df940520146d100df5b019795d0f508d7ba89d24eb18725e1608
RemcosRAT
5b10f4a23880b51923a0df3e9e3c37f40eb0d3cc93de7b463da62f936a501385
RemcosRAT
736bd7b09aa1e987edac64868cc8e5db0d86e709652e0588e2023d052f3def8f
RemcosRAT
a21b11bd7b89c961a73c2184f95b9eb6981e8aa5e06c0199070afe48d7bdf050
RemcosRAT
ca62c5cf8e6f3260dbe15a469e90197612af8843d897f65c7fdde87554ebae51
RemcosRAT
dbca71e07993a71f255cbe929c39c43072e2d4e0929134e76385dd741169374d
RemcosRAT
f43a96ccf1d23d7dda1abbc2bea16ecbb2fb43b2f05e4015ff69c02e2c144ab2
RemcosRAT
f7e29cbf47c9804eb341836873ea6837be7a46639978f44d9ba2670d47e68d56
RemcosRAT
+ 1'867 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  3/10
Tags:
n/a
Link:
https://tria.ge/reports/201221-7v32amvgj6/
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Program crash
Unpacked files
SH256 hash:
23d5bf04cc72523d2a757d26b887ff39aa382fd155cc1d34f1a519967b43cd70
MD5 hash:
97c8264fbf2414929ec93d4ec0a7cb12
SHA1 hash:
0235bc74a47f8cba1e66ee7f31e4ef2690fb425e
Link:
https://www.unpac.me/results/8a9e99a0-2851-4679-ac3a-48dd50fc4d58/
SH256 hash:
63a681a5739224e2a8d2184aee0f2672d57a99b920dbd40de6decb78b961b588
MD5 hash:
fc6398e3e937efd3ec3b835312111b12
SHA1 hash:
1df5edc9d3e24de6032d3569db24c58f79f65476
Link:
https://www.unpac.me/results/8a9e99a0-2851-4679-ac3a-48dd50fc4d58/
SH256 hash:
7386b5ff3648ee515c0caad33d1c29966496329551c7bf5cc22432b4899d45f7
MD5 hash:
74adfb2b53cf4fc657ebfe800c0549bb
SHA1 hash:
b93a90edd928a87eb739ee4f26a26dfe8a1146c8
Link:
https://www.unpac.me/results/8a9e99a0-2851-4679-ac3a-48dd50fc4d58/
SH256 hash:
af7708419bd40872e00124088bac9e5a8fb654cb9dea568148adf12d152d7e39
MD5 hash:
cfb21cc42fcf496d5ed6e0bf0a2db370
SHA1 hash:
d47fd3005078b37ede0a44e0b5134697781578bf
Detections:
win_remcos_g0
Create hunting rule
win_remcos_auto
Create hunting rule
Link:
https://www.unpac.me/results/8a9e99a0-2851-4679-ac3a-48dd50fc4d58/
Parent samples :
751f457af44bf0eeb364517ef0ca6683cb139c4da430f14a5d62d271b9d6f586
aba81a1155ddb5054a5c433eab88203d7551fa52296a98c0f5e376b479da1795
SH256 hash:
aba81a1155ddb5054a5c433eab88203d7551fa52296a98c0f5e376b479da1795
MD5 hash:
72c3542d202465256af178d3a65d34fd
SHA1 hash:
5a95280a96092e15241b02eaac381fe8839c715d
Link:
https://www.unpac.me/results/8a9e99a0-2851-4679-ac3a-48dd50fc4d58/
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/aba81a1155ddb5054a5c433eab88203d7551fa52296a98c0f5e376b479da1795

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.

Malspam

RemcosRAT

iso 69cb9d1f83f7200a60d57437451f0ccb30a68a42227b82d68253f24c44b680d7

RemcosRAT

Executable exe aba81a1155ddb5054a5c433eab88203d7551fa52296a98c0f5e376b479da1795

(this sample)

  
Dropped by
MD5 7745b58372095b36e16465753de783d4
  
Delivery method
Distributed via e-mail attachment
  
Dropped by
SHA256 69cb9d1f83f7200a60d57437451f0ccb30a68a42227b82d68253f24c44b680d7

Comments