MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 610aec487270d875f4c6a5fb4f128d636f817a36e40dc4db55c52505258d785f. 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 7 File information Comments
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SHA256 hash: 610aec487270d875f4c6a5fb4f128d636f817a36e40dc4db55c52505258d785f
SHA3-384 hash: 7067037ccaefb9cd4c3067d1daf8ee082803cd01186606cfab4b07272e4d4e209ec36d2a6766cb8c6fb2005d2b24728e
SHA1 hash: 10ecbc642ce6b8dd8b912088c1643627fb2467af
MD5 hash: ac54e815c731ab52c0c57a4433ac428b
humanhash: hydrogen-three-glucose-enemy
File name:571e42f6394e3fe9d63239315df13631.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:948'736 bytes
First seen:2021-02-17 16:17:51 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'740 x AgentTesla, 19'599 x Formbook, 12'241 x SnakeKeylogger)
ssdeep 12288:KfULlQY6hJA/AXa03mZnf1pcbWVVVPFCMf/M/cFW+Ws+IdXOfwrJVQCK8sPjBUDo:1pQBrzi1pLLdRHM0FAs+iefwbKAT
Threatray 69 similar samples on MalwareBazaar
TLSH 0815BE99322472EEC95BC031DEA98C64AB21746A531F8203D02715ED9E4DF97EF148FB
Reporter abuse_ch
Tags:exe RAT RemcosRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
133
Origin country :
n/a
Vendor Threat Intelligence
Detection(s):
SecuriteInfo.com.Trojan.Packed2.42845.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a process from a recently created file
Creating a process with a hidden window
Deleting a recently created file
Running batch commands
Creating a window
Sending a UDP request
Creating a file
Creating a file in the %AppData% subdirectories
Creating a file in the %temp% directory
Unauthorized injection to a recently created process
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
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
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Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/610565
Signature
Allocates memory in foreign processes
C2 URLs / IPs found in malware configuration
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
Delayed program exit found
Detected Remcos RAT
Detected unpacking (creates a PE file in dynamic memory)
Found malware configuration
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: Suspicious Svchost Process
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
Uses dynamic DNS services
Writes to foreign memory regions
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 354300 Sample: 571e42f6394e3fe9d63239315df... Startdate: 17/02/2021 Architecture: WINDOWS Score: 100 65 berryttttiere.duckdns.org 2->65 67 asddskfjjer.duckdns.org 2->67 73 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->73 75 Found malware configuration 2->75 77 Malicious sample detected (through community Yara rule) 2->77 79 8 other signatures 2->79 14 571e42f6394e3fe9d63239315df13631.exe 3 2->14         started        18 remcos.exe 2 2->18         started        20 remcos.exe 2 2->20         started        signatures3 process4 file5 57 571e42f6394e3fe9d63239315df13631.exe.log, ASCII 14->57 dropped 93 Contains functionality to steal Chrome passwords or cookies 14->93 95 Contains functionality to capture and log keystrokes 14->95 97 Contains functionality to inject code into remote processes 14->97 101 2 other signatures 14->101 22 571e42f6394e3fe9d63239315df13631.exe 4 5 14->22         started        25 571e42f6394e3fe9d63239315df13631.exe 14->25         started        99 Injects a PE file into a foreign processes 18->99 27 remcos.exe 18->27         started        29 remcos.exe 20->29         started        signatures6 process7 file8 53 C:\Users\user\AppData\Roaming\...\remcos.exe, PE32 22->53 dropped 55 C:\Users\user\...\remcos.exe:Zone.Identifier, ASCII 22->55 dropped 31 wscript.exe 1 22->31         started        process9 process10 33 cmd.exe 1 31->33         started        process11 35 remcos.exe 3 33->35         started        38 conhost.exe 33->38         started        signatures12 81 Multi AV Scanner detection for dropped file 35->81 83 Detected unpacking (creates a PE file in dynamic memory) 35->83 85 Machine Learning detection for dropped file 35->85 40 remcos.exe 35->40         started        process13 dnsIp14 69 berryttttiere.duckdns.org 178.0.240.114, 6553 VODANETInternationalIP-BackboneofVodafoneDE Germany 40->69 71 asddskfjjer.duckdns.org 40->71 87 Writes to foreign memory regions 40->87 89 Allocates memory in foreign processes 40->89 91 Injects a PE file into a foreign processes 40->91 44 svchost.exe 40->44         started        signatures15 process16 process17 46 iexplore.exe 44->46         started        process18 48 iexplore.exe 46->48         started        51 iexplore.exe 46->51         started        dnsIp19 59 github.com 140.82.121.4, 443, 49737, 49738 GITHUBUS United States 48->59 61 avatars.githubusercontent.com 185.199.108.133, 443, 49741, 49742 FASTLYUS Netherlands 48->61 63 consentdeliveryfd.azurefd.net 48->63
Detection:
remcos
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Link:
https://mwdb.cert.pl/sample/610aec487270d875f4c6a5fb4f128d636f817a36e40dc4db55c52505258d785f/
Threat name:
ByteCode-MSIL.Packed.Generic
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Status:
Suspicious
First seen:
2021-02-17 15:12:28 UTC
AV detection:
16 of 29 (55.17%)
Threat level:
  1/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=mefoysdsodmhl5ggux5u6eunmnxyc6rw4qg4jw2vyusqkjmnpbpq._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
08c85e93e63fba43e25a3e7bf4e3d9b47783a8acf74a75be9eceffdc68d46cf4
RemcosRAT
42ef2a340b9b5ec88d5ab83584f07ecc76e7b3842640aecd328ad9d85ad745e8
RemcosRAT
46131c5f93779a7547011c983be113cbf561fee1f4cba59ce8dd8f0bfb4a48f7
RemcosRAT
68c7c81b15818419222a9c58550c72c78d30856ccde7a6fe4fc1a096fcd6f064
RemcosRAT
80893e190d49fdc68aec0754db2ffe46c60dccecff6d6d42591858ddba315fa6
RemcosRAT
848aee75718b5e635f13a64dcb64dd0c0d4d44228952d2941a9c4c1c14fd7ea1
RemcosRAT
8c0e5872f00565c21bdf5f5f930ebbfdb116913962150eb35fd3a603e058a045
RemcosRAT
b4ac6ef619dad164d5807395559ed299ce39cd5ec375aa86229d6617973a81fe
RemcosRAT
c31d64d3488602019a27cdb355e3a75abf41c457d6d2aa26f6d88c2a4d3fc30a
RemcosRAT
c3d5cfa19bb7af77abe161135bd85506171d67dca3f86fa6a68340d05e203f64
RemcosRAT
+ 59 additional samples on MalwareBazaar
Result
Malware family:
remcos
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Score:
  10/10
Tags:
family:remcos persistence rat
Link:
https://tria.ge/reports/210217-wtjhxjwr82/
Behaviour
Modifies registry class
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Adds Run key to start application
Loads dropped DLL
Executes dropped EXE
Remcos
Unpacked files
SH256 hash:
2ec41720b412f91f91daaefea38007449491b2c016238aa8f23b6866c89bc788
MD5 hash:
987ce346069cf47535e5ac57265c7228
SHA1 hash:
d0085325ed78fcac6d1f605753237abd1c40db22
Link:
https://www.unpac.me/results/0ef35039-43eb-4434-8f03-17c47d5191db/
SH256 hash:
f038f01cae9cd772307d58a4238093095270a6f28b017e37c03e03aa4c0d8c18
MD5 hash:
3d4493288f1cd3141113844226aee667
SHA1 hash:
8ed7c1f338c5f35835cc60314221d639d1257cf8
Link:
https://www.unpac.me/results/0ef35039-43eb-4434-8f03-17c47d5191db/
SH256 hash:
7bba209f54c76b617fae14fd1944dc68adecebea0557d3706a09ee1b42ae0daf
MD5 hash:
9faba9efdf959db0a582bf32718ea5c2
SHA1 hash:
1c559187807af2d6d8f91504a5e033b83df9bfbd
Detections:
win_remcos_g0
Create hunting rule
Link:
https://www.unpac.me/results/0ef35039-43eb-4434-8f03-17c47d5191db/
SH256 hash:
610aec487270d875f4c6a5fb4f128d636f817a36e40dc4db55c52505258d785f
MD5 hash:
ac54e815c731ab52c0c57a4433ac428b
SHA1 hash:
10ecbc642ce6b8dd8b912088c1643627fb2467af
Link:
https://www.unpac.me/results/0ef35039-43eb-4434-8f03-17c47d5191db/
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
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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
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Author:James_inthe_box
Description:Contains Keylog
Rule name:Parallax
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Author:@bartblaze
Description:Identifies Parallax RAT.
Rule name:remcos_rat
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Author:jeFF0Falltrades
Rule name:REMCOS_RAT_variants
Create hunting rule

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Malspam

RemcosRAT

Executable exe 610aec487270d875f4c6a5fb4f128d636f817a36e40dc4db55c52505258d785f

(this sample)

  
Delivery method
Distributed via e-mail attachment

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