MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 43cb616356d0ad88a91a7beef82159db1e2345df33e0ad8cf4ce80a7cf1c277c. 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: 15


Intelligence 15 IOCs YARA 2 File information Comments 1
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 43cb616356d0ad88a91a7beef82159db1e2345df33e0ad8cf4ce80a7cf1c277c
SHA3-384 hash: 59ee280d206cb813d17be9567065a04abffcbb1a00478e57b272f829e0a82d7b2d3c029b014a3c97643ab108dc3b9e47
SHA1 hash: 33f65a3b6bb816823866a286848fac808f64c1a0
MD5 hash: b5cb5e1203743569f525e297a5fd1a7b
humanhash: cold-louisiana-golf-muppet
File name:b5cb5e1203743569f525e297a5fd1a7b
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:1'115'648 bytes
First seen:2022-10-22 09:19:12 UTC
Last seen:2022-10-22 10:26:56 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'741 x AgentTesla, 19'606 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 24576:Fj9kqnXJoyWyjv5IsSpW4X8riQIVLiT2Ea+ylAROJ3+PpLnSlF:FCMXJoZ85h8X8GQQLM2LfSW34nkF
Threatray 3'509 similar samples on MalwareBazaar
TLSH T16535232877638976C6585B7A84D3042187B18E49B073EF8FB8C50B595D0A3FE4F81BE6
TrID 69.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
9.9% (.EXE) Win64 Executable (generic) (10523/12/4)
6.2% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.7% (.EXE) Win16 NE executable (generic) (5038/12/1)
4.2% (.EXE) Win32 Executable (generic) (4505/5/1)
File icon (PE):PE icon
dhash icon d02f2b3337297b96 (20 x RemcosRAT, 4 x AgentTesla, 1 x NanoCore)
Reporter zbetcheckin
Tags:32 exe RemcosRAT

Intelligence

File Origin
# of uploads :
2
# of downloads :
215
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
remcos
Create hunting rule
ID:
1
File name:
b5cb5e1203743569f525e297a5fd1a7b
Verdict:
Malicious activity
Analysis date:
2022-10-22 09:20:40 UTC
Tags:
rat remcos keylogger
Link:
https://app.any.run/tasks/a98941d3-f728-4c2b-8762-dd1f7f17e640

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Remcos
Create hunting rule
Link:
https://www.capesandbox.com/analysis/322595/
Detection(s):
SecuriteInfo.com.Variant.Lazy.254755.30649.21303.UNOFFICIAL
Create hunting rule

Result
Verdict:
Clean
Maliciousness:

Behaviour
Creating a window
Launching a process
Creating a process with a hidden window
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/6353b5c3898b0652a4b95743/reports/26c0590a-1a20-41d9-a870-58437c1d406a/overview
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.
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/935c7535-0691-4211-a19a-ff57d3818ca8
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1095416
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code contains potential unpacker
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
C2 URLs / IPs found in malware configuration
Installs a global keyboard hook
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
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Uses dynamic DNS services
Yara detected AntiVM3
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 728057 Sample: fKaJl8miaV.exe Startdate: 22/10/2022 Architecture: WINDOWS Score: 100 64 Malicious sample detected (through community Yara rule) 2->64 66 Antivirus detection for dropped file 2->66 68 Antivirus / Scanner detection for submitted sample 2->68 70 10 other signatures 2->70 10 fKaJl8miaV.exe 3 2->10         started        13 oos.exe 2->13         started        15 oos.exe 2 2->15         started        17 oos.exe 2 2->17         started        process3 file4 54 C:\Users\user\AppData\...\fKaJl8miaV.exe.log, ASCII 10->54 dropped 19 fKaJl8miaV.exe 5 4 10->19         started        22 fKaJl8miaV.exe 10->22         started        24 oos.exe 13->24         started        26 oos.exe 13->26         started        28 oos.exe 13->28         started        30 oos.exe 15->30         started        32 oos.exe 17->32         started        process5 file6 48 C:\Users\user\AppData\Roaming\oos.exe, PE32 19->48 dropped 50 C:\Users\user\...\oos.exe:Zone.Identifier, ASCII 19->50 dropped 52 C:\Users\user\AppData\Local\...\install.vbs, data 19->52 dropped 34 wscript.exe 1 19->34         started        process7 process8 36 cmd.exe 1 34->36         started        process9 38 oos.exe 3 36->38         started        41 conhost.exe 36->41         started        signatures10 72 Antivirus detection for dropped file 38->72 74 Multi AV Scanner detection for dropped file 38->74 76 Machine Learning detection for dropped file 38->76 43 oos.exe 2 16 38->43         started        process11 dnsIp12 58 xpremcuz300622.ddns.net 171.22.30.56, 3542, 49712 CMCSUS Germany 43->58 60 geoplugin.net 178.237.33.50, 49713, 80 ATOM86-ASATOM86NL Netherlands 43->60 62 192.168.2.1 unknown unknown 43->62 56 C:\ProgramData\remcos\logs.dat, data 43->56 dropped 78 Installs a global keyboard hook 43->78 file13 signatures14
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/43cb616356d0ad88a91a7beef82159db1e2345df33e0ad8cf4ce80a7cf1c277c/
Threat name:
Win32.Trojan.Remcos0s19
Create hunting rule
Status:
Malicious
First seen:
2022-10-19 04:52:33 UTC
File Type:
PE (.Net Exe)
Extracted files:
13
AV detection:
24 of 40 (60.00%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=ipfwcy2w2cwyrki2ppxpqikz3mpcgro7gpqk3dhuz2akpty4e56a._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
0f04d67901cbdd7f63f9aaf7c5e8493e8d5f4347df701f214232c761d489aeba
RemcosRAT
3e19a176f456db3316b84a9a5bedaeae9323a65d035d285c486b518829aaa5d4
RemcosRAT
6e32755e959eedb7b200382f137bf89e6319644ffab4b52322c70f1d0e4f11e7
RemcosRAT
910d9b435b172c50ad6cde23d820b4e1f07197e82ecdece15a74fbe750584378
RemcosRAT
dff9dfa64f1a603197abded9f5942b83efab0c71520a4fe028ba8fb79cfe7b11
RemcosRAT
e93e5b0f594a010610642083421a9609b380eed335cba10a1138ca31e44c4166
RemcosRAT
+ 3'499 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:xp persistence rat
Link:
https://tria.ge/reports/221022-larp4scae4/
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
Checks computer location settings
Loads dropped DLL
Executes dropped EXE
Remcos
Malware Config
C2 Extraction:
xpremcuz300622.ddns.net:3542
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/8dde6227-9d48-4f7b-8c14-5616e3b5de68
Unpacked files
SH256 hash:
597dc46a254f145b30823349175801a7a18a79546b981c03c6f65d618d3c1a94
MD5 hash:
dd1232c07e3cd52b2accabe79e84de71
SHA1 hash:
366b3f3fc175b3784bde68bd82043fd7143a9ad1
Link:
https://www.unpac.me/results/4611f11b-d3af-4a9d-a303-07f50eab4edf/
SH256 hash:
e5db62eb9602eb4e7b1d2eda848b5f65f1ac35bc90e9127f4777b09493f1fcec
MD5 hash:
9705fef6bfdfbb7e9546fb9a9d1e4afc
SHA1 hash:
e74765ab9298b57cbad7927d693261c78075169d
Detections:
Remcos
Create hunting rule
win_remcos_auto
Create hunting rule
Link:
https://www.unpac.me/results/4611f11b-d3af-4a9d-a303-07f50eab4edf/
Parent samples :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 hash:
6f8bab8e33dfee22a6be413b37235771f788cad05594169866974c4db7bd2020
MD5 hash:
d1897a65c4f298f1ff32e0a037202387
SHA1 hash:
48f5469e5c4c8ba076542fbf216812326a664dfe
Link:
https://www.unpac.me/results/4611f11b-d3af-4a9d-a303-07f50eab4edf/
SH256 hash:
652b37febb030bae36d7736960e8cc87fb48c4ba32f387ea4eb328c4b9a72810
MD5 hash:
7d2c00b5650aa545d9ede01917931f77
SHA1 hash:
007f27dd7ac8f3ebf9fa1e82d0f93b201306de90
Link:
https://www.unpac.me/results/4611f11b-d3af-4a9d-a303-07f50eab4edf/
SH256 hash:
43cb616356d0ad88a91a7beef82159db1e2345df33e0ad8cf4ce80a7cf1c277c
MD5 hash:
b5cb5e1203743569f525e297a5fd1a7b
SHA1 hash:
33f65a3b6bb816823866a286848fac808f64c1a0
Link:
https://www.unpac.me/results/4611f11b-d3af-4a9d-a303-07f50eab4edf/
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/43cb616356d0/report/overview.html
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/43cb616356d0ad88a91a7beef82159db1e2345df33e0ad8cf4ce80a7cf1c277c

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:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash

File information

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

Web download

RemcosRAT

Executable exe 43cb616356d0ad88a91a7beef82159db1e2345df33e0ad8cf4ce80a7cf1c277c

(this sample)

  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/322595/
  
URLhaus
https://urlhaus.abuse.ch/url/2381682/

Comments


Avatar
zbet commented on 2022-10-22 09:19:24 UTC

url : hxxp://185.216.71.161/XZZ.exe