MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b05858be9cfce1e5405b340dd3f80eed01ee77058b9c7af49ca7dd4108f771d1. 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: 16


Intelligence 16 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b05858be9cfce1e5405b340dd3f80eed01ee77058b9c7af49ca7dd4108f771d1
SHA3-384 hash: 09765b6196bcdc8b2918924d62cea7320c5f4bd5deb1d055586b4cff57cfafeeb4255f5dd694011d5db28483e99c8e0f
SHA1 hash: 67c2de5fb75f59af0c9005d2d9feebb2464df8cd
MD5 hash: d1e74b7df92ddadd2370e62d2b02687f
humanhash: jig-vegan-alpha-wisconsin
File name:Payment_Notification3.pdf.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:590'336 bytes
First seen:2022-12-02 09:35:54 UTC
Last seen:2022-12-02 11:29:40 UTC
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:+3DSfd7aiEAfcGZonHajdaRARTUDso5i6D090q8w4KVPfw0e9G3i3o:+3DSlailsn6JaP5c0qf
Threatray 3'138 similar samples on MalwareBazaar
TLSH T17CC4F18D7610B1EFCC57C8729DA42C68EA68783B930B9243A45325EDED0D5ABCF141F6
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)
File icon (PE):PE icon
dhash icon 30b2c4c8c8c4b030 (53 x Formbook, 41 x RemcosRAT, 20 x AgentTesla)
Reporter 0xToxin
Tags:exe RemcosRAT

Intelligence

File Origin
# of uploads :
2
# of downloads :
202
Origin country :
IL IL
Vendor Threat Intelligence
Malware family:
remcos
Create hunting rule
ID:
1
File name:
Payment_Notification3.pdf.exe
Verdict:
Malicious activity
Analysis date:
2022-12-02 09:38:30 UTC
Tags:
rat remcos stealer
Link:
https://app.any.run/tasks/63b1494f-bdd1-4280-bc0f-1f3c007fd180

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/341837/
Detection(s):
SecuriteInfo.com.Win32.Trojan-gen.28743.1370.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending a custom TCP request
Launching a process
Creating a file
Сreating synchronization primitives
DNS request
Creating a file in the %temp% directory
Sending an HTTP GET request
Reading critical registry keys
Creating a process from a recently created file
Creating a window
Stealing user critical data
Unauthorized injection to a recently created process
Forced shutdown of a system process
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/6389c704579915b6b3040b24/reports/f018c38b-7d49-4fca-a5db-1a878fabfe55/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.
Malware family:
Agent Tesla
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/5ecf5c9a-7923-40fc-9d66-2511ea6c5b7b
Result
Threat name:
Remcos, AgentTesla
Create hunting rule
Detection:
malicious
Classification:
spre.phis.troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1126406
Signature
.NET source code contains potential unpacker
.NET source code contains very large array initializations
Allocates memory in foreign processes
Antivirus / Scanner detection for submitted sample
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Initial sample is a PE file and has a suspicious name
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)
Maps a DLL or memory area into another process
Multi AV Scanner detection for domain / URL
Performs DNS queries to domains with low reputation
Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines)
Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines)
Sigma detected: Copy file to startup via Powershell
Sigma detected: Remcos
Snort IDS alert for network traffic
Tries to harvest and steal browser information (history, passwords, etc)
Tries to harvest and steal ftp login credentials
Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc)
Tries to steal Instant Messenger accounts or passwords
Tries to steal Mail credentials (via file / registry access)
Uses an obfuscated file name to hide its real file extension (double extension)
Writes to foreign memory regions
Yara detected AgentTesla
Yara detected Remcos RAT
Yara detected WebBrowserPassView password recovery tool
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 759130 Sample: Payment_Notification3.pdf.exe Startdate: 02/12/2022 Architecture: WINDOWS Score: 100 46 Snort IDS alert for network traffic 2->46 48 Multi AV Scanner detection for domain / URL 2->48 50 Malicious sample detected (through community Yara rule) 2->50 52 13 other signatures 2->52 8 Payment_Notification3.pdf.exe 1 2->8         started        process3 file4 34 C:\...\Payment_Notification3.pdf.exe.log, ASCII 8->34 dropped 11 RegSvcs.exe 2 16 8->11         started        16 powershell.exe 5 8->16         started        process5 dnsIp6 38 top.thekillforabuse1.xyz 195.178.120.12, 49685, 49686, 49687 HEXAGLOBE-ASFR unknown 11->38 40 geoplugin.net 178.237.33.50, 49688, 80 ATOM86-ASATOM86NL Netherlands 11->40 36 C:\Users\user\AppData\Local\Temp\dwn.exe, PE32+ 11->36 dropped 68 Performs DNS queries to domains with low reputation 11->68 70 Maps a DLL or memory area into another process 11->70 18 dwn.exe 1 11->18         started        21 RegSvcs.exe 1 11->21         started        23 RegSvcs.exe 11->23         started        27 33 other processes 11->27 25 conhost.exe 16->25         started        file7 signatures8 process9 dnsIp10 54 Machine Learning detection for dropped file 18->54 56 Writes to foreign memory regions 18->56 58 Allocates memory in foreign processes 18->58 60 Injects a PE file into a foreign processes 18->60 30 CasPol.exe 4 18->30         started        62 Tries to steal Instant Messenger accounts or passwords 21->62 64 Tries to steal Mail credentials (via file / registry access) 21->64 42 192.168.2.1 unknown unknown 27->42 66 Tries to harvest and steal browser information (history, passwords, etc) 27->66 signatures11 process12 dnsIp13 44 mail.mitcltz.com 66.45.253.122, 49689, 587 IS-AS-1US United States 30->44 72 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 30->72 74 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 30->74 76 Tries to steal Mail credentials (via file / registry access) 30->76 78 4 other signatures 30->78 signatures14
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/b05858be9cfce1e5405b340dd3f80eed01ee77058b9c7af49ca7dd4108f771d1/
Threat name:
ByteCode-MSIL.Downloader.Seraph
Create hunting rule
Status:
Malicious
First seen:
2022-12-02 09:36:08 UTC
File Type:
PE (.Net Exe)
Extracted files:
3
AV detection:
20 of 26 (76.92%)
Threat level:
  3/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=wbmfrpu47tq6kqc3gqg5h6ao5ua645yfroohv5e4u7oucchxohiq._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
4bd1f385e71c2b0c8bb27ce271cfd26c696e3049e3e92cd150ba62666bc6221f
RemcosRAT
592f15fec50eda79baadcb6bc5c4cb79de60e5bb285f20fb8e8927477495f065
RemcosRAT
7f89f38c1c2a3e42e7fe2d1c286816361fe77aa49d1d474de200df6eb2dbda81
RemcosRAT
9d724226a2a3c8676d4a58b64b636d9dcc178c1d40fcf321309afa14505cf285
RemcosRAT
a0a124777df35d015c84f61af9a8e4d0dba82120a30fa031b73b885a13d88214
RemcosRAT
ad87f3ad6fb14d2b79d7b7aac1b38bc04fd20757460da0f02cac139408df9969
RemcosRAT
e1eb708f47303b831f6eb0ddc846e21782e8f727dcb0088fcb997c3bf0d4dbd3
RemcosRAT
e68ebc948356b0560fee06f52939504005fd848a93ccc41b4840c1db318a5409
RemcosRAT
+ 3'128 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:agenttesla family:remcos botnet:remotehost collection keylogger rat spyware stealer trojan
Link:
https://tria.ge/reports/221202-lkyleade23/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
outlook_office_path
outlook_win_path
Suspicious use of SetThreadContext
Accesses Microsoft Outlook accounts
Accesses Microsoft Outlook profiles
Drops startup file
Loads dropped DLL
Executes dropped EXE
NirSoft MailPassView
NirSoft WebBrowserPassView
Nirsoft
AgentTesla
Remcos
Malware Config
C2 Extraction:
top.thekillforabuse1.xyz:55988
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/21d056dd-7456-4df1-9730-1506b3374b7a
Unpacked files
SH256 hash:
b7ec81d52159d95176130693228973e72a206900791d622cb1590a8fef3fe601
MD5 hash:
1e6587379e3727ec793a18c06efaea6c
SHA1 hash:
b0f7ecc712e3912b8dfa5cd020e4d63a4332ff6d
Link:
https://www.unpac.me/results/cf8ad8a1-7034-4b9e-9f7b-24549e4a5cb0/
SH256 hash:
fd56a07f2da75c84337cbf94e0acafc09fb909cfb187a0ae214827ce2c4708bb
MD5 hash:
d93c5f59ddc41313bf36f106a2f1fe17
SHA1 hash:
97c5cd9d0689c1cd74685bc979122a13eba3fcc9
Link:
https://www.unpac.me/results/cf8ad8a1-7034-4b9e-9f7b-24549e4a5cb0/
SH256 hash:
825c4d62d9e732d061e25885660f81e1fe907aadde48049f3d1bf301760e9e6a
MD5 hash:
756b70e6f4bde1fd086b3190c2a60146
SHA1 hash:
4753d81616ca9d26d904a68bfb75c1a6d4d2eddb
Detections:
Remcos
Create hunting rule
win_remcos_auto
Create hunting rule
Link:
https://www.unpac.me/results/cf8ad8a1-7034-4b9e-9f7b-24549e4a5cb0/
Parent samples :
777eb848bf3c905f08cf9037ab3587523807806e604bb57e7da21a6a81a930ed
1a238550d2ebef5de175ac81976c00504f74f935edc10903a3a0b23075c8e77b
f63f0aec05acdc4b6427334d073ead70d53709f1b47970bc04329b10f941cca1
0a6b4d008994bb06574688d817089831fc7404e5e458c38e7a1464d072a8fd7a
b05858be9cfce1e5405b340dd3f80eed01ee77058b9c7af49ca7dd4108f771d1
94dd721db7f8f975f2b8cac62518c42889e86f1b29d47d1400b53bbba950b8ec
0b369a736f1f26563fde964ce5a3e43e6ef527a274ba336b701a7c8c34957541
SH256 hash:
b05858be9cfce1e5405b340dd3f80eed01ee77058b9c7af49ca7dd4108f771d1
MD5 hash:
d1e74b7df92ddadd2370e62d2b02687f
SHA1 hash:
67c2de5fb75f59af0c9005d2d9feebb2464df8cd
Link:
https://www.unpac.me/results/cf8ad8a1-7034-4b9e-9f7b-24549e4a5cb0/
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/b05858be9cfc/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/b05858be9cfce1e5405b340dd3f80eed01ee77058b9c7af49ca7dd4108f771d1

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:INDICATOR_EXE_Packed_ConfuserEx
Create hunting rule
Author:ditekSHen
Description:Detects executables packed with ConfuserEx Mod
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 b05858be9cfce1e5405b340dd3f80eed01ee77058b9c7af49ca7dd4108f771d1

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/341837/

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