MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 7a3b69d2da752d5b7be89edc1c1b71393d204915e91fc45d623ed9f61399dd92. 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: 17


Intelligence 17 IOCs YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 7a3b69d2da752d5b7be89edc1c1b71393d204915e91fc45d623ed9f61399dd92
SHA3-384 hash: bfa3dfbc131ae8f2fad0484857b12d939a6924a6dc23dac12a4f717e0c499055c937b637d860721c83453e4fc4c7ff2e
SHA1 hash: da6e3398c8fb220e0e3139d8c2c0926533af1fa6
MD5 hash: f3ec53fcff633c2ce7d4465c17d1e0e0
humanhash: cat-north-cup-queen
File name:NOMINATION LETTER .exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:1'369'088 bytes
First seen:2023-10-18 05:40:37 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'744 x AgentTesla, 19'610 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 24576:zLNRWpCt1ISVcHBc1Zbp62l3fg38gfyC+6QrkWN:Nt15VWBc1z6s08Gu
Threatray 2'681 similar samples on MalwareBazaar
TLSH T16D55C23D19B91237C169C2B9CFE5C827B0009D6F3561AD6998D7B7A64373A8634C323E
TrID 69.7% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.0% (.EXE) Win64 Executable (generic) (10523/12/4)
6.2% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.2% (.EXE) Win32 Executable (generic) (4505/5/1)
1.9% (.EXE) Win16/32 Executable Delphi generic (2072/23)
File icon (PE):PE icon
dhash icon 7907132317181000 (1 x RemcosRAT)
Reporter abuse_ch
Tags:exe RAT RemcosRAT


Avatar
abuse_ch
RemcosRAT C2:
194.147.140.158:1997

Intelligence

File Origin
# of uploads :
1
# of downloads :
361
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
NOMINATION LETTER .exe
Verdict:
Malicious activity
Analysis date:
2023-10-18 06:13:04 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/3acd0e3a-0453-4ef0-8c40-8ff7b95d8fcc

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/455578/
Detection(s):
SecuriteInfo.com.Trojan.DownLoaderNET.710.17408.30066.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Сreating synchronization primitives
Creating a process with a hidden window
Launching a process
Restart of the analyzed sample
Adding an exclusion to Microsoft Defender
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/652f6ff05995667255c0c59c/reports/56d90cc0-7037-4f6e-bf69-e53bbc2c27e0/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_90%
Link:
https://www.hybrid-analysis.com/sample/7a3b69d2da752d5b7be89edc1c1b71393d204915e91fc45d623ed9f61399dd92
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:
Unknown
Link:
https://analyze.intezer.com/analyses/1d1a3714-848d-4e2c-83e0-737f69e947e6
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
n/a
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1327800
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code contains potential unpacker
.NET source code contains very large strings
Adds a directory exclusion to Windows Defender
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Contains functionality to bypass UAC (CMSTPLUA)
Contains functionality to modify clipboard data
Contains functionality to register a low level keyboard hook
Contains functionality to steal Chrome passwords or cookies
Contains functionality to steal Firefox passwords or cookies
Contains functionalty to change the wallpaper
Delayed program exit found
Found malware configuration
Injects a PE file into a foreign processes
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
Sigma detected: Scheduled temp file as task from temp location
Snort IDS alert for network traffic
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected AntiVM3
Yara detected Remcos RAT
Yara detected UAC Bypass using CMSTP
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1327800 Sample: NOMINATION_LETTER_.exe Startdate: 18/10/2023 Architecture: WINDOWS Score: 100 39 geoplugin.net 2->39 45 Snort IDS alert for network traffic 2->45 47 Found malware configuration 2->47 49 Malicious sample detected (through community Yara rule) 2->49 51 13 other signatures 2->51 8 oKykVXVTWZN.exe 5 2->8         started        11 NOMINATION_LETTER_.exe 7 2->11         started        signatures3 process4 file5 55 Antivirus detection for dropped file 8->55 57 Multi AV Scanner detection for dropped file 8->57 59 Contains functionality to bypass UAC (CMSTPLUA) 8->59 67 7 other signatures 8->67 14 schtasks.exe 1 8->14         started        16 oKykVXVTWZN.exe 8->16         started        35 C:\Users\user\AppData\...\oKykVXVTWZN.exe, PE32 11->35 dropped 37 C:\Users\user\AppData\Local\...\tmp3E0B.tmp, XML 11->37 dropped 61 Uses schtasks.exe or at.exe to add and modify task schedules 11->61 63 Adds a directory exclusion to Windows Defender 11->63 65 Injects a PE file into a foreign processes 11->65 18 NOMINATION_LETTER_.exe 3 15 11->18         started        23 powershell.exe 23 11->23         started        25 schtasks.exe 1 11->25         started        signatures6 process7 dnsIp8 27 conhost.exe 14->27         started        41 194.147.140.158, 1997, 49714 PTPEU unknown 18->41 43 geoplugin.net 178.237.33.50, 49716, 80 ATOM86-ASATOM86NL Netherlands 18->43 33 C:\ProgramData\remcos\logs.dat, Unknown 18->33 dropped 53 Installs a global keyboard hook 18->53 29 conhost.exe 23->29         started        31 conhost.exe 25->31         started        file9 signatures10 process11
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/7a3b69d2da752d5b7be89edc1c1b71393d204915e91fc45d623ed9f61399dd92
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/7a3b69d2da752d5b7be89edc1c1b71393d204915e91fc45d623ed9f61399dd92/
Threat name:
Win32.Backdoor.Remcos
Create hunting rule
Status:
Malicious
First seen:
2023-10-18 05:41:07 UTC
File Type:
PE (.Net Exe)
Extracted files:
18
AV detection:
12 of 23 (52.17%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=pi5wtuw2ouwvw67it3obyg3rhe6sasiv5ep4ixlch3m7me4z3wja._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
agenttesla
Create hunting rule
Similar samples:
34c7377e5b187edf6d660e7df34b68b968940b6de1399c2f4a3e5675099139f4
RemcosRAT
483d7f7379d43c9fb3effb226cb58a443f48105bda3a9a6310a76729d7c1b3bd
RemcosRAT
4eecb3d02825158bc36d86c8d75f37137a11576eb8fb9fec7e592648fd369f96
RemcosRAT
50c55b209d899514903835fbded92e680b34cd34e24aac9d3919522c42b543d4
RemcosRAT
8278a87cb192844a46818c28aba0106879e1c368366fc52064d2c7943f3f197b
RemcosRAT
897a97b958884456ec4bc6222c29db3057ab0df05c31de0ad02fa1b0ab6a4730
RemcosRAT
bdaeb27128a9d6dbcd93b0844d57e6de8a03ec3b53b1380f41523ec35ad6af18
RemcosRAT
c7917d3ebb2c276113548fdfc4dec0b4db97145b9e687d3177248f1b675800fc
RemcosRAT
+ 2'671 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:kin rat
Link:
https://tria.ge/reports/231018-gdfd2ada38/
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Checks computer location settings
Remcos
Malware Config
C2 Extraction:
194.147.140.158:1997
Unpacked files
SH256 hash:
b1270dc9ec3f22c6fd2296239426ac7c48589589580d4a1b3da8188920b22a63
MD5 hash:
5c904da8528cfb1b87b15a6aa7c059cd
SHA1 hash:
f0a192969485d1bc34bf52adf37d9c20176d6b85
Link:
https://www.unpac.me/results/2befc140-0234-48eb-9f65-27bab25cbbf8/
SH256 hash:
de59c3246c72163cfc5d3b5a8aec72ec6a585893a6c7d80fbff35238aabe6027
MD5 hash:
c3b2bcacf04baacd6daae4cf4896872c
SHA1 hash:
b7815d4d77ea49e493898d9ce06061e2c9c83feb
Link:
https://www.unpac.me/results/2befc140-0234-48eb-9f65-27bab25cbbf8/
SH256 hash:
ed278807068709bcc74ef7d01ce46682b64d8ec9c8466dc8aaeb92ed75495aaa
MD5 hash:
51e85d063788811778e570139e28ac5a
SHA1 hash:
b3a9f24d4d25c91058e6c1f91e07219423b428fa
Link:
https://www.unpac.me/results/2befc140-0234-48eb-9f65-27bab25cbbf8/
SH256 hash:
b91f9685fe2dcb85e3b4d659e67689e8c6298deb1175831859d74ee78be68ed5
MD5 hash:
c1fdbc715dce3000950a71e4ac14a989
SHA1 hash:
2a4501f6a0ae0b7b471a9a6dd442d2a103f47a9e
Detections:
Remcos
Create hunting rule
win_remcos_w0
Create hunting rule
win_remcos_auto
Create hunting rule
Link:
https://www.unpac.me/results/2befc140-0234-48eb-9f65-27bab25cbbf8/
SH256 hash:
1893bb9229dfc0f51cbe641cc7ea6fbdea07b795638971ad4e094b839139e5da
MD5 hash:
f6d9b5784f78ebc8fc951f80bd006155
SHA1 hash:
0d73cd992a9297eff9ce93e1a3bdb341ea4a9dde
Link:
https://www.unpac.me/results/2befc140-0234-48eb-9f65-27bab25cbbf8/
SH256 hash:
7a3b69d2da752d5b7be89edc1c1b71393d204915e91fc45d623ed9f61399dd92
MD5 hash:
f3ec53fcff633c2ce7d4465c17d1e0e0
SHA1 hash:
da6e3398c8fb220e0e3139d8c2c0926533af1fa6
Link:
https://www.unpac.me/results/2befc140-0234-48eb-9f65-27bab25cbbf8/
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/7a3b69d2da75/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Remcos
Score:
0.90
Link:
https://yomi.yoroi.company/submissions/7a3b69d2da752d5b7be89edc1c1b71393d204915e91fc45d623ed9f61399dd92

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:AgentTesla_DIFF_Common_Strings_01
Create hunting rule
Author:schmidtsz
Description:Identify partial Agent Tesla strings
Rule name:NET
Create hunting rule
Author:malware-lu
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.

Cape
Cape
https://www.capesandbox.com/analysis/455578/

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