MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 2323e3fa9e42ca85d8c33196bbb4b5273403e1eae415e42be8b055df1a560337. 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 6 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 2323e3fa9e42ca85d8c33196bbb4b5273403e1eae415e42be8b055df1a560337
SHA3-384 hash: a79814be03b080c31b7cedb4d79e2b9cf9ddcd9108cde8a2c6d87d96489f3e857abb0146e684c4aeaadf1b9096f0f1ce
SHA1 hash: 7146d922c7fe3d33d73b852e5b86a83125c4814d
MD5 hash: bdfafcbb2c96464c187c42a6a6908636
humanhash: mike-carolina-alanine-oxygen
File name:PO.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:723'456 bytes
First seen:2020-10-26 10:11:25 UTC
Last seen:2020-10-26 11:58:46 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'666 x AgentTesla, 19'479 x Formbook, 12'209 x SnakeKeylogger)
ssdeep 12288:FV7ADHmuHM9C6YklZ8qgFgTByIriw6lM7I/2XgfXp:kDHItTswv7Iuip
Threatray 1'025 similar samples on MalwareBazaar
TLSH B3F4C022F6448390E539E7BF003280701BF2BC56D770D51A7CE4759B26B3A82CA7AB57
Reporter abuse_ch
Tags:exe nVpn RAT RemcosRAT


Avatar
abuse_ch
Malspam distributing RemcosRAT:

HELO: mail-smail-vm43.hanmail.net
Sending IP: 203.133.180.231
From: 제작요청건 <bwj1029@daum.net>
Subject: 발주서송부드립니다.
Attachment: LKP-2010-024.cab (contains "PO.exe")

RemcosRAT C2:
bkns-rubis43.ddns.net:1618 (79.134.225.80)

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 :
86
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Remcos
Create hunting rule
Link:
https://www.capesandbox.com/analysis/78983/
Detection(s):
SecuriteInfo.com.Trojan.PackedNET.424.18694.25285.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending a UDP request
Creating a window
Creating a file in the Windows subdirectories
Launching a process
Creating a process with a hidden window
Launching cmd.exe command interpreter
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/511510
Signature
.NET source code contains potential unpacker
Allocates memory in foreign processes
Detected Remcos RAT
Injects a PE file into a foreign processes
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
Sigma detected: Suspicious Svchost Process
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
Writes to foreign memory regions
Yara detected AntiVM_3
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 304902 Sample: PO.exe Startdate: 26/10/2020 Architecture: WINDOWS Score: 100 54 bkns-rubis43.ddns.net 2->54 68 Multi AV Scanner detection for dropped file 2->68 70 Sigma detected: Scheduled temp file as task from temp location 2->70 72 Multi AV Scanner detection for submitted file 2->72 74 9 other signatures 2->74 10 PO.exe 8 2->10         started        signatures3 process4 file5 48 C:\Users\user\AppData\Roaming\DojwWXLE.exe, PE32 10->48 dropped 50 C:\Users\user\AppData\Local\...\tmp83D4.tmp, XML 10->50 dropped 76 Injects a PE file into a foreign processes 10->76 14 PO.exe 3 71 10->14         started        19 schtasks.exe 1 10->19         started        21 PO.exe 10->21         started        signatures6 process7 dnsIp8 60 bkns-rubis43.ddns.net 79.134.225.80, 1618, 49723, 49724 FINK-TELECOM-SERVICESCH Switzerland 14->60 52 C:\Users\user\AppData\Roaming\...\logs.dat, ASCII 14->52 dropped 62 Writes to foreign memory regions 14->62 64 Allocates memory in foreign processes 14->64 66 Injects a PE file into a foreign processes 14->66 23 svchost.exe 2 12 14->23         started        25 cmd.exe 1 14->25         started        27 svchost.exe 14->27         started        31 6 other processes 14->31 29 conhost.exe 19->29         started        file9 signatures10 process11 process12 33 iexplore.exe 2 113 23->33         started        35 conhost.exe 25->35         started        37 reg.exe 1 25->37         started        process13 39 iexplore.exe 33->39         started        42 iexplore.exe 33->42         started        44 iexplore.exe 62 33->44         started        46 5 other processes 33->46 dnsIp14 56 bkns-rubis43.ddns.net 39->56 58 192.168.2.1 unknown unknown 42->58
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/2323e3fa9e42ca85d8c33196bbb4b5273403e1eae415e42be8b055df1a560337/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2020-10-25 22:15:08 UTC
AV detection:
25 of 29 (86.21%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=emr6h6u6ilfilwgdggllxnfve42ahypk4qk6ik7iwbk56gswam3q._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
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8a525d55d517847b7379170a844775e1ea1ddc79816e4650d74787da63141d65
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RemcosRAT
+ 1'015 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
evasion trojan rat family:remcos
Link:
https://tria.ge/reports/201026-xdarhnwvmj/
Behaviour
Creates scheduled task(s)
Modifies registry key
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of SetThreadContext
Remcos
UAC bypass
Malware Config
C2 Extraction:
bkns-rubis43.ddns.net:1618
Please note that we are no longer able to provide a coverage score for Virus Total.

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: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: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

cab b4cce5009aac04c30a25ef076ab0dde7c9f8d8f55af924d9ac4f79394be66b8b

RemcosRAT

Executable exe 2323e3fa9e42ca85d8c33196bbb4b5273403e1eae415e42be8b055df1a560337

(this sample)

  
Dropped by
MD5 447d4dd06c0a6717b89df825de24cb39
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/78983/
  
Dropped by
SHA256 b4cce5009aac04c30a25ef076ab0dde7c9f8d8f55af924d9ac4f79394be66b8b

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