MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 54cc7fbd8c21b80fa350cea51414fda2e2d1673c80ab0eeab0ec851f51e847fa. 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 6 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 54cc7fbd8c21b80fa350cea51414fda2e2d1673c80ab0eeab0ec851f51e847fa
SHA3-384 hash: 9cdd1643996ff5c45857eb8568e10f4286009c9d10e9e0fafc30ac8dc0ab586fc9caf78c851e299e887bf464f7df970a
SHA1 hash: 78d6f7dfd1ba1ae1252349e28f3743336a28add9
MD5 hash: 4c2b1695c92a37d0269ab3a6f9ce99cd
humanhash: equal-sink-oregon-seven
File name:Scan-Documents-00HDH10SH363BD836VSH3.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:1'051'992 bytes
First seen:2020-10-15 10:39:40 UTC
Last seen:2020-10-15 12:16:02 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'744 x AgentTesla, 19'608 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 3072:1OA878Sxt0wuEUcpsfqUn9U+JnA8YkZxCKckLKXt1XTNZjWimfjMObu41RaQ3ea/:VO87wZGpp1Rapa7J9vlFptRCi
Threatray 850 similar samples on MalwareBazaar
TLSH 7325C87C6DC52137CABBD273C9F006EBF9106C4B31955C2E5297A3510A23B6B7D81A2E
Reporter abuse_ch
Tags:exe MailChannels RAT RemcosRAT


Avatar
abuse_ch
Malspam distributing RemcosRAT:

HELO: blue.elm.relay.mailchannels.net
Sending IP: 23.83.212.20
From: lab <lab@gstcalibration.com>
Reply-To: lab@gstcalibration.com
Subject: Purchasing Order
Attachment: Scan-Documents-00HDH10SH363BD836VSH3.rar (contains "Scan-Documents-00HDH10SH363BD836VSH3.exe")

RemcosRAT C2:
www.kesaihk.com:2556 (185.19.85.183)

Intelligence

File Origin
# of uploads :
2
# of downloads :
83
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Remcos
Create hunting rule
Link:
https://www.capesandbox.com/analysis/71249/
Detection(s):
PUA.Win.Trojan.Generic-6629274-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending a UDP request
Launching a process
Creating a file
DNS request
Creating a file in the %AppData% subdirectories
Enabling the 'hidden' option for recently created files
Setting a global event handler for the keyboard
Sending a TCP request to an infection source
Enabling autorun by creating a file
Unauthorized injection to a system process
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/492109
Signature
.NET source code contains very large strings
Adds a directory exclusion to Windows Defender
Allocates memory in foreign processes
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
Creates an undocumented autostart registry key
Detected Remcos RAT
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: Remcos
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Writes to foreign memory regions
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 298499 Sample: Scan-Documents-00HDH10SH363... Startdate: 15/10/2020 Architecture: WINDOWS Score: 100 30 www.kesaihk.com 2->30 36 Malicious sample detected (through community Yara rule) 2->36 38 Multi AV Scanner detection for dropped file 2->38 40 Multi AV Scanner detection for submitted file 2->40 42 7 other signatures 2->42 9 Scan-Documents-00HDH10SH363BD836VSH3.exe 4 2->9         started        signatures3 process4 file5 24 C:\Users\user\AppData\Roaming\...\vlc.exe, PE32 9->24 dropped 26 Scan-Documents-00H...63BD836VSH3.exe.log, ASCII 9->26 dropped 44 Creates an undocumented autostart registry key 9->44 46 Writes to foreign memory regions 9->46 48 Allocates memory in foreign processes 9->48 50 2 other signatures 9->50 13 vbc.exe 2 3 9->13         started        18 powershell.exe 24 9->18         started        signatures6 process7 dnsIp8 32 www.kesaihk.com 185.19.85.183, 2556, 49729, 49730 DATAWIRE-ASCH Switzerland 13->32 34 192.168.2.1 unknown unknown 13->34 28 C:\Users\user\AppData\Roaming\...\logs.dat, data 13->28 dropped 52 Contains functionality to steal Chrome passwords or cookies 13->52 54 Contains functionality to capture and log keystrokes 13->54 56 Contains functionality to inject code into remote processes 13->56 58 Contains functionality to steal Firefox passwords or cookies 13->58 20 conhost.exe 18->20         started        file9 signatures10 process11 process12 22 conhost.exe 20->22         started       
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/54cc7fbd8c21b80fa350cea51414fda2e2d1673c80ab0eeab0ec851f51e847fa/
Threat name:
ByteCode-MSIL.Backdoor.Remcos
Create hunting rule
Status:
Malicious
First seen:
2020-10-14 17:48:33 UTC
AV detection:
23 of 29 (79.31%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=ktgh7pmmeg4a7i2qz2srifh5ulrnczz4qcvq52vq5scr6upii75a._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
13eaaf168207a5014c105532b6a23805fc6db28f73908914a4583979173cc254
RemcosRAT
2f07a5d8c1e6ac465e5d306b0fb8335aa41f3204b9bf9793337a849a93921a9a
RemcosRAT
314d26bc5fe146f5040c40b8c5b889e6e90cb0b22ec694564c1182d49c3bf950
RemcosRAT
397545efcbf53bebabdb003bbe9f8b619b7ffdd5383c21ecd9e99c6de3e3cd83
RemcosRAT
3bdfaf82d5d56f2546be44b3355f8d72cc0508984586e0fba3d704a5adabf7d1
RemcosRAT
64ba0f4265f9ed3f3f9315ee0256b360827074d5f898a7eb07ed98dd5f7fec7e
RemcosRAT
970ffc480d61b37737f34ddf738e257a99162cce8338f7c59fdd4ab995ae9dfc
RemcosRAT
b3ae13e392ebe3eec95949395786577344472af7588ed1db4577c597a417e8a4
RemcosRAT
c8c1e04edd5c422d065e27a3a73931d373de200419cd9ba649fdfadee686e5f2
RemcosRAT
d69aa1932b2e702e5065ee19da9fc9cf2b05e7dbaa617141b14eaa501a14955e
RemcosRAT
+ 840 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
rat family:remcos
Link:
https://tria.ge/reports/201015-8exvyk2ja2/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Uses the VBS compiler for execution
Remcos
Malware Config
C2 Extraction:
www.kesaihk.com:2556
Unpacked files
SH256 hash:
54cc7fbd8c21b80fa350cea51414fda2e2d1673c80ab0eeab0ec851f51e847fa
MD5 hash:
4c2b1695c92a37d0269ab3a6f9ce99cd
SHA1 hash:
78d6f7dfd1ba1ae1252349e28f3743336a28add9
Link:
https://www.unpac.me/results/ed5b5752-03e5-4582-9d98-bf855ff7d49d/
SH256 hash:
c9618b56e4a947294e0a6e6e8f3e3e26914bba37fddd05620cda86b807a3d614
MD5 hash:
c53da0707bf9f0d8210dd1063ff17a7c
SHA1 hash:
18f7d1a6d7c30e58d9d60b3239232fc5435bad77
Link:
https://www.unpac.me/results/ed5b5752-03e5-4582-9d98-bf855ff7d49d/
SH256 hash:
213560d8a2b597864ca4e1786e1cbfab7766f10df33dcc29b1ef1724b8272c0b
MD5 hash:
97cb8b6839fcfe2732c263c6c908152d
SHA1 hash:
9992b0f4504eb406f2365e80d01399d8dada4a14
Link:
https://www.unpac.me/results/ed5b5752-03e5-4582-9d98-bf855ff7d49d/
SH256 hash:
199d9df13b0f31514a8f9d7b23eea2d85926b676618bbff996f5a7008a0b287b
MD5 hash:
81048dba61ab6807f9c3af55aa9cb3ff
SHA1 hash:
2720c0314e75348d33a8103562a2af37bdba42ac
Detections:
win_remcos_g0
Create hunting rule
win_remcos_auto
Create hunting rule
Link:
https://www.unpac.me/results/ed5b5752-03e5-4582-9d98-bf855ff7d49d/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.57
Link:
https://yomi.yoroi.company/submissions/54cc7fbd8c21b80fa350cea51414fda2e2d1673c80ab0eeab0ec851f51e847fa

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

rar 065a9c1d9536136875740da9b4613ba47e9dec9040cd464a4054e040e799ca54

RemcosRAT

Executable exe 54cc7fbd8c21b80fa350cea51414fda2e2d1673c80ab0eeab0ec851f51e847fa

(this sample)

  
Dropped by
MD5 86a5a5ad9e5e6d2b6fe627da856a5b29
  
Delivery method
Distributed via e-mail attachment
  
Dropped by
SHA256 065a9c1d9536136875740da9b4613ba47e9dec9040cd464a4054e040e799ca54
Cape
Cape
https://www.capesandbox.com/analysis/71249/

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