MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 5b10f4a23880b51923a0df3e9e3c37f40eb0d3cc93de7b463da62f936a501385. 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: 5b10f4a23880b51923a0df3e9e3c37f40eb0d3cc93de7b463da62f936a501385
SHA3-384 hash: 3c30bf65205b12f446d96672eb6ba9c9e26420e1c773564d6018dca8050a436057c782984e05e8d8b1c0bb7f90e05b18
SHA1 hash: 4d983b14f55ca8ddcb1a511cf7ea592528e50b97
MD5 hash: 7536a1389f6f1446834c6d4423846f6e
humanhash: arkansas-alaska-speaker-minnesota
File name:DHL Delivery document 1190409526, pdf.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:634'368 bytes
First seen:2020-10-20 08:39:16 UTC
Last seen:2020-10-26 05:54:55 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'737 x AgentTesla, 19'595 x Formbook, 12'238 x SnakeKeylogger)
ssdeep 12288:hRzAe0ask2iNwRL7lWcIT2noYC3bk3Mq0xYROZkt:hhF1SnQcIM4kZ8J
Threatray 911 similar samples on MalwareBazaar
TLSH 1BD4E1B133F89F21E03E5779153021419FF2A527D6A2E6997DDC12EE4F62B420A73722
Reporter abuse_ch
Tags:DHL exe RAT RemcosRAT


Avatar
abuse_ch
Malspam distributing RemcosRAT:

HELO: vps.knei-ttrati.com
Sending IP: 45.95.169.151
From: DHL Express Cargo <delivery@dhl.com>
Subject: RV: DHL CARGO DELIVERY
Attachment: DHL Delivery document 1190409526, pdf.iso (contains "DHL Delivery document 1190409526, pdf.exe")

Intelligence

File Origin
# of uploads :
2
# of downloads :
63
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Remcos
Create hunting rule
Link:
https://www.capesandbox.com/analysis/73377/
Detection(s):
SecuriteInfo.com.MSIL.Kryptik.WZA.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
Running batch commands
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
rans.troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/497393
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
Initial sample is a PE file and has a suspicious name
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 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
Writes many files with high entropy
Yara detected AntiVM_3
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 300903 Sample: DHL Delivery document 11904... Startdate: 20/10/2020 Architecture: WINDOWS Score: 100 82 Malicious sample detected (through community Yara rule) 2->82 84 Sigma detected: Scheduled temp file as task from temp location 2->84 86 Multi AV Scanner detection for submitted file 2->86 88 14 other signatures 2->88 11 DHL Delivery document 1190409526, pdf.exe 7 2->11         started        14 remcos.exe 2->14         started        17 remcos.exe 2->17         started        process3 file4 70 C:\Users\user\AppData\Roaming\XdRDHSYW.exe, PE32 11->70 dropped 72 C:\Users\...\XdRDHSYW.exe:Zone.Identifier, ASCII 11->72 dropped 74 C:\Users\user\AppData\Local\...\tmpCE0D.tmp, XML 11->74 dropped 76 DHL Delivery docum...409526, pdf.exe.log, ASCII 11->76 dropped 19 DHL Delivery document 1190409526, pdf.exe 4 5 11->19         started        22 schtasks.exe 1 11->22         started        98 Injects a PE file into a foreign processes 14->98 24 schtasks.exe 14->24         started        26 remcos.exe 14->26         started        28 schtasks.exe 17->28         started        30 remcos.exe 17->30         started        signatures5 process6 file7 64 C:\Users\user\AppData\Roaming\...\remcos.exe, PE32 19->64 dropped 66 C:\Users\user\...\remcos.exe:Zone.Identifier, ASCII 19->66 dropped 32 wscript.exe 1 19->32         started        34 conhost.exe 22->34         started        36 conhost.exe 24->36         started        38 conhost.exe 28->38         started        process8 process9 40 cmd.exe 1 32->40         started        process10 42 remcos.exe 5 40->42         started        46 conhost.exe 40->46         started        file11 68 C:\Users\user\AppData\...\remcos.exe.log, ASCII 42->68 dropped 90 Machine Learning detection for dropped file 42->90 92 Contains functionality to steal Chrome passwords or cookies 42->92 94 Contains functionality to capture and log keystrokes 42->94 96 2 other signatures 42->96 48 remcos.exe 2 151 42->48         started        52 schtasks.exe 1 42->52         started        signatures12 process13 dnsIp14 78 doublegrace2020.ddns.net 185.19.85.135, 7171 DATAWIRE-ASCH Switzerland 48->78 80 192.168.2.1 unknown unknown 48->80 56 C:\Users\user\...\time_20201020_121238.dat, data 48->56 dropped 58 C:\Users\user\...\time_20201020_121237.dat, data 48->58 dropped 60 C:\Users\user\...\time_20201020_121236.dat, data 48->60 dropped 62 45 other malicious files 48->62 dropped 54 conhost.exe 52->54         started        file15 process16
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/5b10f4a23880b51923a0df3e9e3c37f40eb0d3cc93de7b463da62f936a501385/
Threat name:
ByteCode-MSIL.Backdoor.Remcos
Create hunting rule
Status:
Malicious
First seen:
2020-10-20 01:45:47 UTC
AV detection:
24 of 27 (88.89%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=lmipjiryqc2rsi5a347j4pbx6qhlbu6mspphwrr5uyxzg2sqcocq._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
15170d0dbe467efc4e38156ed4e03702ae19af44c100d7df7a75c6dbdb7ac587
RemcosRAT
1b9cbd60298e5be7b6c5813a3c03bd423ae73364049848c44145b9c079fd0adc
RemcosRAT
4875f3562c4af57ea7bd8f6eecfc297784d9307cd7190a6aa44a0dffc21258c9
RemcosRAT
6274c01dd6783517a68267d2c6c2af38143ed35074cfc2372d8bc385a7c5f4e9
RemcosRAT
6c489ebc2d7b407a9058479ee3e54b83949ef2a58ce749528cea74b4f0b5db0e
RemcosRAT
6c882aeb918e424cefe1068a6d3fbff5526c31e185716bf3a0d5ae0295772f09
RemcosRAT
a1c644a64801c61e1649517c3debc28b194b4f9d43e1a99bc28724f652c3ca5e
RemcosRAT
b29880b2403337ef4fb3c644c4b033327cb6e2828d28799a0cc6a708cc0afaa4
RemcosRAT
b5ba143b36eb77a1899c07ef016155b3b7ef73b83456cadf534245896360b902
RemcosRAT
c4417a6bdfb8727b6cb186c09a2e3700ec563324bb60d22544a6ee5b8a2eda29
RemcosRAT
+ 901 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
rat family:remcos persistence
Link:
https://tria.ge/reports/201020-5cyrd2xngj/
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
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:
doublegrace2020.ddns.net:7171
Unpacked files
SH256 hash:
5b10f4a23880b51923a0df3e9e3c37f40eb0d3cc93de7b463da62f936a501385
MD5 hash:
7536a1389f6f1446834c6d4423846f6e
SHA1 hash:
4d983b14f55ca8ddcb1a511cf7ea592528e50b97
Link:
https://www.unpac.me/results/71f73020-e57f-46e4-8a36-61ae0182cefb/
SH256 hash:
b04af7807e880c7b483021d6a9994053fbcfaae2b9fd1ac78c7ec52012783245
MD5 hash:
698f1c93819f5317b4947ae48a75fead
SHA1 hash:
3d86c5fc9d2b45f4d89c346a5e7fbb50eeb987d9
Link:
https://www.unpac.me/results/71f73020-e57f-46e4-8a36-61ae0182cefb/
SH256 hash:
e14e6d94171009a7af3de6af8e51f95696cd82c0061145934ddcd5091cb1b21d
MD5 hash:
c497856fca84908a0c678cc5f1da8466
SHA1 hash:
56ba38072b2f221ae2ae081596fdb1c997e97a25
Link:
https://www.unpac.me/results/71f73020-e57f-46e4-8a36-61ae0182cefb/
SH256 hash:
1db4cf3196814f2df8605635ce7044f242e780be926b6c29846a711b1fdd1c69
MD5 hash:
9bcbf00464231cf85f8a67332d2827b2
SHA1 hash:
90fa0467d943b518b2642cf475b52efed7c2183d
Detections:
win_remcos_g0
Create hunting rule
win_remcos_auto
Create hunting rule
Link:
https://www.unpac.me/results/71f73020-e57f-46e4-8a36-61ae0182cefb/
Parent samples :
b29880b2403337ef4fb3c644c4b033327cb6e2828d28799a0cc6a708cc0afaa4
5b10f4a23880b51923a0df3e9e3c37f40eb0d3cc93de7b463da62f936a501385
SH256 hash:
bac5797bde4b2810766a40d95bcdb825ac5b395fcbadd139daa19a44a6cdc049
MD5 hash:
a92cc1f6e0a2742350dfda6726db14c0
SHA1 hash:
e5404e3ed46498deb8ad8966a774540c2b8e9c1e
Link:
https://www.unpac.me/results/71f73020-e57f-46e4-8a36-61ae0182cefb/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Trojan
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/5b10f4a23880b51923a0df3e9e3c37f40eb0d3cc93de7b463da62f936a501385

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

iso 74eb8ffaabeb316dcfb0b9269617a14cc0385cdbb2060c0c9c0b6e536ed542e9

RemcosRAT

Executable exe 5b10f4a23880b51923a0df3e9e3c37f40eb0d3cc93de7b463da62f936a501385

(this sample)

  
Dropped by
MD5 54c6a45a72ea2ec249bd51f245a72131
  
Delivery method
Distributed via e-mail attachment
  
Dropped by
SHA256 74eb8ffaabeb316dcfb0b9269617a14cc0385cdbb2060c0c9c0b6e536ed542e9
Cape
Cape
https://www.capesandbox.com/analysis/73377/

Comments