MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4684a4b4906fcdcb11065f527c784d3fd34b319214d01453dc3867f00704a913. 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: 14


Intelligence 14 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4684a4b4906fcdcb11065f527c784d3fd34b319214d01453dc3867f00704a913
SHA3-384 hash: 55a986d666069186dc66f0246d0ef2e048acfd8234352cd2221c1faa7dd909427aa4deeb9ea9466e7d84f819d647b6d4
SHA1 hash: d0e2eae8edb203ddc6a7e8dfe08b6499bd0d7f98
MD5 hash: 1406552822c0706d9200194f5515b9bc
humanhash: comet-juliet-red-skylark
File name:1406552822c0706d9200194f5515b9bc.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:717'312 bytes
First seen:2021-12-22 18:50:22 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'462 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 12288:tphAMgzV3qJpBsaO52I8C0vFYXmNBAjLNRT/rQW2HLOeOhjKr3TqJR4yz0hwc:SPgJpBshlpKFY1RT/H2rchjwjDqc
TLSH T14CE4238666B8973AF4FD1AB75A7C0E8003B3F7A22962C24C1DCD64CA4972B0547E1F57
Reporter abuse_ch
Tags:exe RAT RemcosRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
243
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
1406552822c0706d9200194f5515b9bc.exe
Verdict:
Malicious activity
Analysis date:
2021-12-22 18:53:17 UTC
Tags:
rat remcos keylogger
Link:
https://app.any.run/tasks/c981bfa8-3659-4adf-b49b-c4c6de3a14fa

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/215840/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
DNS request
Unauthorized injection to a recently created process
Creating a file
Сreating synchronization primitives
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Creating a file in the %temp% directory
Creating a process from a recently created file
Creating a process with a hidden window
Running batch commands
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
obfuscated packed
Link:
https://www.filescan.io/uploads/61c3739b4ab5c44cbf4d0cdc/reports/6eb76c4e-f474-483d-af13-a22f590b8d87/overview
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.
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/9f8cceaa-3941-4823-9972-5c4212fc816c
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/911700
Signature
.NET source code contains potential unpacker
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
Injects a PE file into a foreign processes
Installs a global keyboard hook
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: Suspect Svchost Activity
Sigma detected: Suspicious Script Execution From Temp Folder
Sigma detected: Suspicious Svchost Process
Sigma detected: WScript or CScript Dropper
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Yara detected AntiVM3
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 544177 Sample: Odb82tw4r8.exe Startdate: 22/12/2021 Architecture: WINDOWS Score: 100 60 Malicious sample detected (through community Yara rule) 2->60 62 Multi AV Scanner detection for submitted file 2->62 64 Detected Remcos RAT 2->64 66 8 other signatures 2->66 11 Odb82tw4r8.exe 3 2->11         started        15 winn.exe 2 2->15         started        17 winn.exe 2 2->17         started        process3 file4 56 C:\Users\user\AppData\...\Odb82tw4r8.exe.log, ASCII 11->56 dropped 78 Contains functionality to steal Chrome passwords or cookies 11->78 80 Contains functionality to inject code into remote processes 11->80 82 Contains functionality to steal Firefox passwords or cookies 11->82 84 Delayed program exit found 11->84 19 Odb82tw4r8.exe 4 4 11->19         started        86 Injects a PE file into a foreign processes 15->86 22 winn.exe 15->22         started        24 winn.exe 15->24         started        26 winn.exe 15->26         started        28 winn.exe 17->28         started        signatures5 process6 file7 50 C:\Users\user\AppData\Roaming\winn.exe, PE32 19->50 dropped 52 C:\Users\user\...\winn.exe:Zone.Identifier, ASCII 19->52 dropped 54 C:\Users\user\AppData\Local\...\install.vbs, data 19->54 dropped 30 wscript.exe 1 19->30         started        process8 process9 32 cmd.exe 1 30->32         started        process10 34 winn.exe 3 32->34         started        38 conhost.exe 32->38         started        file11 48 C:\Users\user\AppData\Local\...\winn.exe.log, ASCII 34->48 dropped 68 Multi AV Scanner detection for dropped file 34->68 70 Contains functionality to steal Chrome passwords or cookies 34->70 72 Contains functionality to steal Firefox passwords or cookies 34->72 74 2 other signatures 34->74 40 winn.exe 3 1 34->40         started        44 winn.exe 34->44         started        signatures12 process13 dnsIp14 58 jamaru1444.myftp.biz 2.58.149.52, 2019, 49745 GBTCLOUDUS Netherlands 40->58 76 Installs a global keyboard hook 40->76 46 svchost.exe 40->46         started        signatures15 process16
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/4684a4b4906fcdcb11065f527c784d3fd34b319214d01453dc3867f00704a913/
Threat name:
ByteCode-MSIL.Backdoor.Remcos
Create hunting rule
Status:
Malicious
First seen:
2021-12-22 14:01:13 UTC
File Type:
PE (.Net Exe)
Extracted files:
8
AV detection:
17 of 28 (60.71%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=i2ckjneqn7g4weigl5jhy6cnh7juwmmsctibiu64hbt7abyevejq._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:godsgrace_2022 brand:microsoft persistence phishing rat
Link:
https://tria.ge/reports/211222-xhgqnafhd4/
Behaviour
Modifies Internet Explorer settings
Modifies registry class
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Drops file in Windows directory
Detected potential entity reuse from brand microsoft.
Suspicious use of SetThreadContext
Adds Run key to start application
Loads dropped DLL
Executes dropped EXE
Remcos
Malware Config
C2 Extraction:
jamaru1444.myftp.biz:2019
Unpacked files
SH256 hash:
5ec471fdd89d108f02713ca3c9cdc4d8993d6a01ef74c84e7007316e9337457d
MD5 hash:
db941e0dfacb41670af9d364327ca25b
SHA1 hash:
7b5e55762b4f69e98118e6bedb83e8f9b21f137f
Detections:
win_remcos_g0
Create hunting rule
Link:
https://www.unpac.me/results/f32afb8c-ee20-438f-a2a1-58ebb22774fd/
Parent samples :
e05a3ed46d18c39464fd1e47bcea0055e56bd2788eeda09cbd8f5d07fea0e236
cf0e8fb30fec443d523eb8c666a541a4695ad286030f5faa5dfc5760df98962d
08ce43a6cd4945d7c2d6031b465b27103ffb213bff99c5c83a31011b6c89bb13
ed57a7a3f8709be19e7451aa4fb7b7af9586df41f9d63aefc4b30b8b7a5de90a
4684a4b4906fcdcb11065f527c784d3fd34b319214d01453dc3867f00704a913
3e05e9f85beed0027d616a6932ec057f15c4c8499e8a6ee085f8199a61aedec3
SH256 hash:
0bc98b1911b6665ddea536cb79cffb3d6871f64dd2e94344351b4e618b000cbb
MD5 hash:
9c898ba226024a661387c01bfded1a5a
SHA1 hash:
5bd9a18f44bed8ed1205fd836a55ae59d657a94f
Link:
https://www.unpac.me/results/f32afb8c-ee20-438f-a2a1-58ebb22774fd/
SH256 hash:
55535d7416e19740ddca81496bcfb9ea7f4ec52735e01d43880f6359f92b63be
MD5 hash:
42c16475606875decc737cb31dfb2cbb
SHA1 hash:
28db67a9058bbebedbd28819bce871cdeb62f968
Link:
https://www.unpac.me/results/f32afb8c-ee20-438f-a2a1-58ebb22774fd/
SH256 hash:
4684a4b4906fcdcb11065f527c784d3fd34b319214d01453dc3867f00704a913
MD5 hash:
1406552822c0706d9200194f5515b9bc
SHA1 hash:
d0e2eae8edb203ddc6a7e8dfe08b6499bd0d7f98
Link:
https://www.unpac.me/results/f32afb8c-ee20-438f-a2a1-58ebb22774fd/
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/4684a4b4906f/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/4684a4b4906fcdcb11065f527c784d3fd34b319214d01453dc3867f00704a913

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: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 4684a4b4906fcdcb11065f527c784d3fd34b319214d01453dc3867f00704a913

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/1909245/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/215840/

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