MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 2bff54b9373397bb78dc3dd57f37b85affb564edec73fbb265e9a14d313a2a1d. 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: 12


Intelligence 12 IOCs YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 2bff54b9373397bb78dc3dd57f37b85affb564edec73fbb265e9a14d313a2a1d
SHA3-384 hash: 45b540827c4b0cdef36e2f398a6364fd5fe3fbbfc5802ffc8358cdf192a2ca0140dbf9aba6be4e91d4f3e4b229ed27ef
SHA1 hash: 5963c193d856ead444804089ff3f147902c4afe5
MD5 hash: 7ff9457d0721e01547b556e0c833594c
humanhash: bakerloo-undress-beryllium-helium
File name:INV20230104-BR.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:7'680 bytes
First seen:2023-01-04 16:27:10 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 96:/wlDWr5PYwMrAobmeXEV2rYvyIohMjZjVtokjr1Zw6kU+nzz1YdaKNp6Ny3EKzNF:4D+PYwMrzEfKm1VtoEsHU+nzHZy5
Threatray 3'585 similar samples on MalwareBazaar
TLSH T1CDF11921A7E49B3BD8F247359CB383808734F7414E47DF9EA984901F5F227684A93365
TrID 71.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.2% (.EXE) Win64 Executable (generic) (10523/12/4)
6.3% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.3% (.EXE) Win32 Executable (generic) (4505/5/1)
2.0% (.ICL) Windows Icons Library (generic) (2059/9)
Reporter lowmal3
Tags:exe RemcosRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
201
Origin country :
DE DE
Vendor Threat Intelligence
Malware family:
remcos
Create hunting rule
ID:
1
File name:
INV20230104-BR.exe
Verdict:
Malicious activity
Analysis date:
2023-01-04 16:29:39 UTC
Tags:
rat remcos stealer
Link:
https://app.any.run/tasks/bd74a4bd-6cf1-4a76-9d09-a6695a7d6357

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/349439/
Detection(s):
SecuriteInfo.com.Win32.RATX-gen.10389.22055.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Сreating synchronization primitives
DNS request
Sending a custom TCP request
Launching a process
Creating a process with a hidden window
Creating a file in the %AppData% subdirectories
Creating a file
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Query of malicious DNS domain
Sending a TCP request to an infection source
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
obfuscated packed
Link:
https://www.filescan.io/uploads/63b5a91340e878e30422b052/reports/2ded1e73-0326-4730-be95-dfe07b3407b9/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:
Suspicious
Link:
https://analyze.intezer.com/analyses/fb6b0677-8e97-4605-95f7-7be62d753779
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
phis.troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1145195
Signature
.NET source code contains potential unpacker
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Encrypted powershell cmdline option found
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for submitted file
Sigma detected: Remcos
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Instant Messenger accounts or passwords
Tries to steal Mail credentials (via file / registry access)
Tries to steal Mail credentials (via file registry)
Yara detected Costura Assembly Loader
Yara detected Remcos RAT
Yara detected WebBrowserPassView password recovery tool
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 777927 Sample: INV20230104-BR.exe Startdate: 04/01/2023 Architecture: WINDOWS Score: 100 61 Multi AV Scanner detection for domain / URL 2->61 63 Malicious sample detected (through community Yara rule) 2->63 65 Antivirus detection for URL or domain 2->65 67 8 other signatures 2->67 7 INV20230104-BR.exe 16 7 2->7         started        12 Afyxoxgok.exe 2->12         started        14 Afyxoxgok.exe 2->14         started        process3 dnsIp4 43 l-0003.l-dc-msedge.net 13.107.43.12, 443, 49697, 49702 MICROSOFT-CORP-MSN-AS-BLOCKUS United States 7->43 45 yu952q.am.files.1drv.com 7->45 51 2 other IPs or domains 7->51 33 C:\Users\user\AppData\...\Afyxoxgok.exe, PE32 7->33 dropped 35 C:\Users\...\Afyxoxgok.exe:Zone.Identifier, ASCII 7->35 dropped 37 C:\Users\user\...\INV20230104-BR.exe.log, ASCII 7->37 dropped 75 Encrypted powershell cmdline option found 7->75 16 aspnet_compiler.exe 2 13 7->16         started        20 powershell.exe 16 7->20         started        47 192.168.2.1 unknown unknown 12->47 53 3 other IPs or domains 12->53 77 Machine Learning detection for dropped file 12->77 49 l-0004.l-dc-msedge.net 13.107.43.13, 443, 49703 MICROSOFT-CORP-MSN-AS-BLOCKUS United States 14->49 55 3 other IPs or domains 14->55 file5 signatures6 process7 dnsIp8 39 obologs.work.gd 194.5.98.244, 4044, 49698, 49699 DANILENKODE Netherlands 16->39 41 geoplugin.net 178.237.33.50, 49700, 80 ATOM86-ASATOM86NL Netherlands 16->41 57 Tries to steal Mail credentials (via file registry) 16->57 59 Maps a DLL or memory area into another process 16->59 22 aspnet_compiler.exe 1 16->22         started        25 aspnet_compiler.exe 1 16->25         started        27 aspnet_compiler.exe 16->27         started        31 32 other processes 16->31 29 conhost.exe 20->29         started        signatures9 process10 signatures11 69 Tries to steal Instant Messenger accounts or passwords 22->69 71 Tries to steal Mail credentials (via file / registry access) 22->71 73 Tries to harvest and steal browser information (history, passwords, etc) 31->73
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/2bff54b9373397bb78dc3dd57f37b85affb564edec73fbb265e9a14d313a2a1d/
Threat name:
ByteCode-MSIL.Trojan.Leonem
Create hunting rule
Status:
Malicious
First seen:
2023-01-04 16:46:25 UTC
File Type:
PE (.Net Exe)
Extracted files:
1
AV detection:
20 of 26 (76.92%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=fp7vjojxgol3w6g4hxkx6n5yll73kzhn5rz7xmtf5gqu2mj2fioq._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
0e1b5e7257b490e22a966862602dee637a6a192f55527137d6c3a94bc9dc34ca
RemcosRAT
18a39f6193c69dae7ea38aa9dd25fddabdb651c4276e242d0b585bd13c49c3a9
RemcosRAT
36f48dac4f1cc73c684288dd7113e222e1a4026722ce3c55b378402aabe6361c
RemcosRAT
6e52e90b821296bad26f5e889ab6b40bee7912017890cd8f380c0f6d1a89567a
RemcosRAT
7fadbd60573858ffed6181a05604701a0ddf5f38cdb9c0c097cd55b17f9e0d5f
RemcosRAT
a2cbf70ab3ebedd2c768816596fade8e94d1dd0d6025001ac59a71860e45b808
RemcosRAT
ae6134942672653a0652d8b74100de3c7bccd094ee66bbc0314e75b276cfb1c8
RemcosRAT
c98bf80d5e23903e4934015e75f6c036130296519548b6014575207d2d296201
RemcosRAT
f7f8d1ebfed3afd13eb47392a7f502603ecb970a817c221682cd8f2a17ff2bb3
RemcosRAT
+ 3'575 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:remotehost collection persistence rat
Link:
https://tria.ge/reports/230104-tym1tscb8z/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Program crash
Suspicious use of SetThreadContext
Accesses Microsoft Outlook accounts
Adds Run key to start application
Checks computer location settings
NirSoft MailPassView
NirSoft WebBrowserPassView
Nirsoft
Remcos
Malware Config
C2 Extraction:
obologs.work.gd:4044
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/eabc7c18-637b-4b7f-b0e5-5574742008d9
Unpacked files
SH256 hash:
2bff54b9373397bb78dc3dd57f37b85affb564edec73fbb265e9a14d313a2a1d
MD5 hash:
7ff9457d0721e01547b556e0c833594c
SHA1 hash:
5963c193d856ead444804089ff3f147902c4afe5
Link:
https://www.unpac.me/results/fc4ad357-e4b9-4bae-9adb-80fca1a22f1c/
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/2bff54b93733/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.35
Link:
https://yomi.yoroi.company/submissions/2bff54b9373397bb78dc3dd57f37b85affb564edec73fbb265e9a14d313a2a1d

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:AsyncRat_Detection_Dec_2022
Create hunting rule
Author:Potatech
Description:AsyncRat
Rule name:INDICATOR_EXE_Packed_SmartAssembly
Create hunting rule
Author:ditekSHen
Description:Detects executables packed with SmartAssembly
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.

Malspam

RemcosRAT

Executable exe 2bff54b9373397bb78dc3dd57f37b85affb564edec73fbb265e9a14d313a2a1d

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/349439/

Comments