MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 2ac63fd303f0da81cfc80c17bf1cb6e9ef3d11abf648449271e980a91646ca25. 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 10 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 2ac63fd303f0da81cfc80c17bf1cb6e9ef3d11abf648449271e980a91646ca25
SHA3-384 hash: eb420b6eff26f8fb7f5d6556fb8e418d952d326416a361ab31a826a07e02387096100577f943c1b9e51f9aa91b212925
SHA1 hash: a24cbc811f8dac8b2ea664d0eb948a03088d01ce
MD5 hash: 2665eb212699a18ca1412caab87755c9
humanhash: oscar-timing-ack-autumn
File name:1464bbe24dac1f403f15b3c3860f37ca.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:582'144 bytes
First seen:2021-02-01 12:14:52 UTC
Last seen:2021-02-01 14:17:52 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'744 x AgentTesla, 19'609 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 12288:IPCmYVMqb37YoyAW06/39lFLRw+MBX5K+KG:IKLyAW06/NlFLREt
TLSH 91C403C32D747F97D06906B7BF54400C0E27B4CAAD118196CB861FE9DCEDAE6CA31662
Reporter abuse_ch
Tags:exe RAT RemcosRAT

Intelligence

File Origin
# of uploads :
2
# of downloads :
132
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
1464bbe24dac1f403f15b3c3860f37ca.exe
Verdict:
Malicious activity
Analysis date:
2021-02-01 12:22:16 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/d0ada992-577c-4e33-acd4-33b69c12e240

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Gathering data
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
Creating a file
Creating a file in the %AppData% subdirectories
Creating a file in the %temp% directory
Creating a process from a recently created file
Creating a process with a hidden window
Deleting a recently created file
Running batch commands
Launching a process
Unauthorized injection to a recently created process
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Result
Verdict:
MALICIOUS
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/595305
Signature
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
Detected Remcos RAT
Detected unpacking (creates a PE file in dynamic memory)
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 domain / URL
Multi AV Scanner detection for dropped file
Sigma detected: Remcos
Sigma detected: Suspicious Svchost Process
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
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: 346689 Sample: 1464bbe24dac1f403f15b3c3860... Startdate: 01/02/2021 Architecture: WINDOWS Score: 100 56 sandshoe.myfirewall.org 2->56 68 Multi AV Scanner detection for domain / URL 2->68 70 Malicious sample detected (through community Yara rule) 2->70 72 Detected Remcos RAT 2->72 74 6 other signatures 2->74 14 1464bbe24dac1f403f15b3c3860f37ca.exe 3 2->14         started        18 svchosts.exe 2 2->18         started        signatures3 process4 file5 54 1464bbe24dac1f403f15b3c3860f37ca.exe.log, ASCII 14->54 dropped 90 Contains functionality to steal Chrome passwords or cookies 14->90 92 Contains functionality to capture and log keystrokes 14->92 94 Contains functionality to inject code into remote processes 14->94 96 Contains functionality to steal Firefox passwords or cookies 14->96 20 1464bbe24dac1f403f15b3c3860f37ca.exe 4 5 14->20         started        23 svchosts.exe 18->23         started        signatures6 process7 file8 48 C:\Users\user\AppData\...\svchosts.exe, PE32 20->48 dropped 50 C:\Users\...\svchosts.exe:Zone.Identifier, ASCII 20->50 dropped 25 wscript.exe 1 20->25         started        process9 process10 27 cmd.exe 1 25->27         started        process11 29 svchosts.exe 3 27->29         started        33 conhost.exe 27->33         started        file12 52 C:\Users\user\AppData\...\svchosts.exe.log, ASCII 29->52 dropped 82 Multi AV Scanner detection for dropped file 29->82 84 Detected unpacking (creates a PE file in dynamic memory) 29->84 86 Machine Learning detection for dropped file 29->86 88 3 other signatures 29->88 35 svchosts.exe 4 3 29->35         started        39 svchosts.exe 29->39         started        signatures13 process14 dnsIp15 58 sandshoe.myfirewall.org 79.134.225.105, 2404, 49721, 49722 FINK-TELECOM-SERVICESCH Switzerland 35->58 60 192.168.2.1 unknown unknown 35->60 76 Writes to foreign memory regions 35->76 78 Allocates memory in foreign processes 35->78 80 Injects a PE file into a foreign processes 35->80 41 svchost.exe 2 12 35->41         started        signatures16 process17 process18 43 iexplore.exe 73 41->43         started        process19 45 iexplore.exe 43->45         started        dnsIp20 62 avatars.githubusercontent.com 45->62 64 github.com 140.82.121.4, 443, 49733, 49734 GITHUBUS United States 45->64 66 2 other IPs or domains 45->66
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/2ac63fd303f0da81cfc80c17bf1cb6e9ef3d11abf648449271e980a91646ca25/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2021-02-01 11:47:42 UTC
AV detection:
24 of 46 (52.17%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=fldd7uyd6dnidt6ibql36hfw5hxt2enl6zeejetr5gaksfsgzisq._file
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos persistence ransomware rat
Link:
https://tria.ge/reports/210201-mw93qcnp96/
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
Malware Config
C2 Extraction:
sandshoe.myfirewall.org:2404
Unpacked files
SH256 hash:
b212f0dfc69f00068a581f076e1f81315ed932cddaa6fd0c67c64cf722c46723
MD5 hash:
137275f8cfdad6f05e8f1a7b2edc5033
SHA1 hash:
6becfb294a315cec2976081ba3773996b8010871
Detections:
win_remcos_g0
Create hunting rule
win_remcos_auto
Create hunting rule
Link:
https://www.unpac.me/results/76b07257-e69d-4558-91ab-cca26365cea9/
Parent samples :
2ac63fd303f0da81cfc80c17bf1cb6e9ef3d11abf648449271e980a91646ca25
abd5600b6b5f6228c095e5703429fbcecc647611fadd3e49090fbb70a8cfb728
c4f18a18795f014313de0e26a1545c184da0223f0e40e481306b69e570471733
48e8ff87262aacbe6b64962d5703ddf042e51bd5cd099bc787923ab33f172ccb
e16fca2ddc966a1a20b47df8c007cc64cda7f3a9f74f6f04a38d93f13324a379
ac03de9eb86c038c61523da3b2e8e8d6748f6f45762e44564547f96df37acbe4
SH256 hash:
2ad076528758636ed0275befc0356352762e233449f70883a7d72c77866ce27f
MD5 hash:
ea8dbfa30f820e73f21525d1745d2227
SHA1 hash:
e17e94f8aa8c9b1d345f864af6206111fa960073
Link:
https://www.unpac.me/results/76b07257-e69d-4558-91ab-cca26365cea9/
SH256 hash:
a2a0bbbe8c9ee88441356010f63455c50dfcafe663db757bbc453c815c51d720
MD5 hash:
11e80c54bfeff7f0c120dae46df0a8be
SHA1 hash:
d597b9b0dcac06f0aa00a931bb90de8eba564651
Link:
https://www.unpac.me/results/76b07257-e69d-4558-91ab-cca26365cea9/
SH256 hash:
2ac63fd303f0da81cfc80c17bf1cb6e9ef3d11abf648449271e980a91646ca25
MD5 hash:
2665eb212699a18ca1412caab87755c9
SHA1 hash:
a24cbc811f8dac8b2ea664d0eb948a03088d01ce
Link:
https://www.unpac.me/results/76b07257-e69d-4558-91ab-cca26365cea9/
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/2ac63fd303f0da81cfc80c17bf1cb6e9ef3d11abf648449271e980a91646ca25

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:SUSP_Modified_SystemExeFileName_in_File
Create hunting rule
Author:Florian Roth
Description:Detecst a variant of a system file name often used by attackers to cloak their activity
Reference:https://www.symantec.com/blogs/threat-intelligence/seedworm-espionage-group
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

Executable exe 2ac63fd303f0da81cfc80c17bf1cb6e9ef3d11abf648449271e980a91646ca25

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/114942/

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