MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b4ac6ef619dad164d5807395559ed299ce39cd5ec375aa86229d6617973a81fe. 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: 10


Intelligence 10 IOCs YARA 7 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b4ac6ef619dad164d5807395559ed299ce39cd5ec375aa86229d6617973a81fe
SHA3-384 hash: 8ef8c75aff3af1bffd2fe9732df9fdcf2491e11244c1d8fac4b48352ca9a7422cf72391a76aa101fc5d84b125bcaaa45
SHA1 hash: fb1473263622e9a6c3f1800b3285475dfce7922d
MD5 hash: 32a1ba2a7e4f4bf2701fb75091ec6760
humanhash: winner-diet-zebra-burger
File name:PO 20191003.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:852'480 bytes
First seen:2021-02-16 06:23:23 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 12288:RFmXl2fhMrXkpWocaZpc7jiuf6rnymbIKxYd4RJrgpYzI6FBoIFxprEEQvV:RXW43ZIlWyFO9RJrmYzr
Threatray 52 similar samples on MalwareBazaar
TLSH 5C05231C63E4CE26CCB397B8D862F1D0967278219755EF1AAB3812F809413DD6762F92
Reporter abuse_ch
Tags:exe RAT RemcosRAT


Avatar
abuse_ch
Malspam distributing RemcosRAT:

HELO: vps.helitactica.xyz
Sending IP: 203.159.80.22
From: office@kolsitegroups.com
Subject: Purchase Order 3401
Attachment: PO 20191003.zip (contains "PO 20191003.exe")

Intelligence

File Origin
# of uploads :
1
# of downloads :
111
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/117286/
Detection(s):
SecuriteInfo.com.Trojan.Packed2.42845.UNOFFICIAL
Create hunting rule

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
Unauthorized injection to a recently created process
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/608620
Signature
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
Uses dynamic DNS services
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 353339 Sample: PO 20191003.exe Startdate: 16/02/2021 Architecture: WINDOWS Score: 100 60 Found malware configuration 2->60 62 Malicious sample detected (through community Yara rule) 2->62 64 Multi AV Scanner detection for submitted file 2->64 66 12 other signatures 2->66 11 PO 20191003.exe 3 2->11         started        15 remcos.exe 2 2->15         started        17 remcos.exe 2 2->17         started        process3 file4 54 C:\Users\user\AppData\...\PO 20191003.exe.log, ASCII 11->54 dropped 76 Injects a PE file into a foreign processes 11->76 19 PO 20191003.exe 4 5 11->19         started        22 PO 20191003.exe 11->22         started        24 PO 20191003.exe 11->24         started        26 remcos.exe 15->26         started        28 remcos.exe 15->28         started        30 remcos.exe 15->30         started        32 remcos.exe 17->32         started        signatures5 process6 file7 50 C:\Users\user\AppData\Roaming\...\remcos.exe, PE32 19->50 dropped 52 C:\Users\user\...\remcos.exe:Zone.Identifier, ASCII 19->52 dropped 34 wscript.exe 1 19->34         started        process8 process9 36 cmd.exe 1 34->36         started        process10 38 remcos.exe 3 36->38         started        41 conhost.exe 36->41         started        signatures11 68 Multi AV Scanner detection for dropped file 38->68 70 Detected unpacking (creates a PE file in dynamic memory) 38->70 72 Machine Learning detection for dropped file 38->72 74 Injects a PE file into a foreign processes 38->74 43 remcos.exe 3 3 38->43         started        46 remcos.exe 38->46         started        process12 dnsIp13 56 fgtrert.duckdns.org 45.145.185.209, 8494 DEDIPATH-LLCUS Netherlands 43->56 58 fgtrert.duckdns.orgqweerreww.duckdns.org 43->58 48 svchost.exe 43->48         started        process14
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/b4ac6ef619dad164d5807395559ed299ce39cd5ec375aa86229d6617973a81fe/
Threat name:
ByteCode-MSIL.Packed.Generic
Create hunting rule
Status:
Suspicious
First seen:
2021-02-16 05:36:38 UTC
AV detection:
15 of 29 (51.72%)
Threat level:
  1/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=wswg55qz3liwjvmaookvlhwsthhdttk6yn22vbrctvtbpfz2qh7a._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
08c85e93e63fba43e25a3e7bf4e3d9b47783a8acf74a75be9eceffdc68d46cf4
RemcosRAT
0aae2bace47fd4233b42b2ee714d5f46a05fc2970928131c28573d9fbd876552
RemcosRAT
2a914a931b749d964e9087d25ec502a25c22118c24e0239e7b9a73af3d4a6779
RemcosRAT
33b25ae8a09b3249f6f5a9971d563933e88d20dca6f2b761c308783e164de492
RemcosRAT
6cf485e9d0c0f8ffbe0c4d8776adfd121f4de33fd73262d642739cc3491cac13
RemcosRAT
719bb30fb8ff3d79fd0216bdbc9f9d1b377c1456a20c8d9a26f1a19e283352ba
RemcosRAT
80893e190d49fdc68aec0754db2ffe46c60dccecff6d6d42591858ddba315fa6
RemcosRAT
8d087e56deb745a40c704cd0a508f9f07b697b3ff44ae660ee581f7f42e4e160
RemcosRAT
cacfd3f384737f85e02f8c4dfad0689a71b228c8b930995c24da43582f688a64
RemcosRAT
e759db35e2aa047d055ca4d5d089da667aaa39d443a35601784090382f0d1e2a
RemcosRAT
+ 42 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos persistence rat
Link:
https://tria.ge/reports/210216-dgwytfl2bn/
Behaviour
Modifies registry class
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
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:
51969db8b8dc9e864028a19facfd37ec0af4da28dfc9e1254ec6b47b836ad169
MD5 hash:
f2b6b35fadd1463456c91f3803d4fb0f
SHA1 hash:
feb924d22e62cbf9366b6823d6b28430fe8d427b
Link:
https://www.unpac.me/results/d75bec25-96cd-4633-9c37-22db5dd82e81/
SH256 hash:
2ec41720b412f91f91daaefea38007449491b2c016238aa8f23b6866c89bc788
MD5 hash:
987ce346069cf47535e5ac57265c7228
SHA1 hash:
d0085325ed78fcac6d1f605753237abd1c40db22
Link:
https://www.unpac.me/results/d75bec25-96cd-4633-9c37-22db5dd82e81/
SH256 hash:
ce6c454e873fbfbcb1687855c40baafbc93be0a5c1b94ba2c112ad6696139fd8
MD5 hash:
51ec5074914e246b625e4804ddad7c53
SHA1 hash:
203ac95b3fac1586f6bd0476ed7f8558ca27a293
Detections:
win_remcos_g0
Create hunting rule
Link:
https://www.unpac.me/results/d75bec25-96cd-4633-9c37-22db5dd82e81/
Parent samples :
b4ac6ef619dad164d5807395559ed299ce39cd5ec375aa86229d6617973a81fe
848aee75718b5e635f13a64dcb64dd0c0d4d44228952d2941a9c4c1c14fd7ea1
8c0e5872f00565c21bdf5f5f930ebbfdb116913962150eb35fd3a603e058a045
c31d64d3488602019a27cdb355e3a75abf41c457d6d2aa26f6d88c2a4d3fc30a
SH256 hash:
b4ac6ef619dad164d5807395559ed299ce39cd5ec375aa86229d6617973a81fe
MD5 hash:
32a1ba2a7e4f4bf2701fb75091ec6760
SHA1 hash:
fb1473263622e9a6c3f1800b3285475dfce7922d
Link:
https://www.unpac.me/results/d75bec25-96cd-4633-9c37-22db5dd82e81/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.54
Link:
https://yomi.yoroi.company/submissions/b4ac6ef619dad164d5807395559ed299ce39cd5ec375aa86229d6617973a81fe

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_rat
Create hunting rule
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

zip 8bbe7ceda2f5babf11366bb03bcfdb2e3aed61c54e0ad11bd4395fb4a62b2ee2

RemcosRAT

Executable exe b4ac6ef619dad164d5807395559ed299ce39cd5ec375aa86229d6617973a81fe

(this sample)

  
Dropped by
MD5 682e4687b74eed3e4e8b7e8e0cb73c4f
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/117286/
  
Dropped by
SHA256 8bbe7ceda2f5babf11366bb03bcfdb2e3aed61c54e0ad11bd4395fb4a62b2ee2

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