MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 71b55b8575963a25df831dbc936196e996ce48927577f2f4cc8a5398994b1cbd. 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: 7


Intelligence 7 IOCs YARA 2 File information Comments
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SHA256 hash: 71b55b8575963a25df831dbc936196e996ce48927577f2f4cc8a5398994b1cbd
SHA3-384 hash: a5962cd78a7d4872bddb039ef09955d76cc353cb88eedc6d0971839d596ce5560351984522e88af9003d93692d630079
SHA1 hash: 3ace14575611fabc33355d5a38a36d369594fb68
MD5 hash: 53667cce010367f3abf42bfb77f93bd4
humanhash: undress-kentucky-massachusetts-zebra
File name:SecuriteInfo.com.W32.AIDetectNet.01.23773.20380
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:12'288 bytes
First seen:2022-08-02 05:44:40 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'649 x AgentTesla, 19'461 x Formbook, 12'202 x SnakeKeylogger)
ssdeep 96:naoZGPkvnZ85v/97V185RSflOikJY7jhea2q5EwExoxH1YdaKNP6NylwJzNt:WPcnZ85v/P1S8fgikJY7jr2zcDPUW
TLSH T1DC42984FD7C859B1D93E493EA45292B20664B781DCBD4E6D34B47857BC333C20652E2B
TrID 72.5% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.4% (.EXE) Win64 Executable (generic) (10523/12/4)
6.5% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.4% (.EXE) Win32 Executable (generic) (4505/5/1)
2.0% (.EXE) OS/2 Executable (generic) (2029/13)
File icon (PE):PE icon
dhash icon 9b1979616969612b (42 x RemcosRAT, 6 x AgentTesla, 5 x Formbook)
Reporter SecuriteInfoCom
Tags:exe RemcosRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
296
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/295743/
Detection(s):
SecuriteInfo.com.W32.AIDetectNet.01.23773.20380.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Сreating synchronization primitives
DNS request
Sending a custom TCP request
Sending an HTTP GET request
Launching a process
Creating a process with a hidden window
Creating a file in the %AppData% subdirectories
Creating a file
Creating a window
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:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/62e8ba1fbcf76fcb6cdb214f/reports/131e3dc2-2c7d-422c-98ba-ad2c6ad15cef/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/c567bf44-d0f3-4098-9838-595a0daafc0a
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
rans.phis.troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1044612
Signature
.NET source code contains potential unpacker
Allocates memory in foreign processes
C2 URLs / IPs found in malware configuration
Contains functionality to inject code into remote processes
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
Encrypted powershell cmdline option found
Injects a PE file into a foreign processes
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 dropped file
Multi AV Scanner detection for submitted file
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)
Writes to foreign memory regions
Yara detected Generic Downloader
Yara detected Remcos RAT
Yara detected WebBrowserPassView password recovery tool
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 677106 Sample: SecuriteInfo.com.W32.AIDete... Startdate: 02/08/2022 Architecture: WINDOWS Score: 100 61 Malicious sample detected (through community Yara rule) 2->61 63 Multi AV Scanner detection for submitted file 2->63 65 Yara detected Remcos RAT 2->65 67 6 other signatures 2->67 7 SecuriteInfo.com.W32.AIDetectNet.01.23773.exe 16 7 2->7         started        12 Xzoougnx.exe 14 3 2->12         started        14 Xzoougnx.exe 2->14         started        process3 dnsIp4 59 transfer.sh 144.76.136.153, 443, 49729, 49776 HETZNER-ASDE Germany 7->59 43 C:\Users\user\AppData\...\Xzoougnx.exe, PE32 7->43 dropped 45 C:\Users\...\Xzoougnx.exe:Zone.Identifier, ASCII 7->45 dropped 47 SecuriteInfo.com.W...et.01.23773.exe.log, ASCII 7->47 dropped 77 Encrypted powershell cmdline option found 7->77 79 Writes to foreign memory regions 7->79 81 Allocates memory in foreign processes 7->81 83 Injects a PE file into a foreign processes 7->83 16 aspnet_compiler.exe 2 16 7->16         started        21 powershell.exe 18 7->21         started        85 Multi AV Scanner detection for dropped file 12->85 87 Machine Learning detection for dropped file 12->87 23 powershell.exe 12->23         started        file5 signatures6 process7 dnsIp8 49 obologs.work.gd 194.5.98.244, 4044, 49772, 49773 DANILENKODE Netherlands 16->49 51 geoplugin.net 178.237.33.50, 49775, 80 ATOM86-ASATOM86NL Netherlands 16->51 53 transfer.sh 16->53 39 C:\Users\user\AppData\Local\Temp\dwn.exe, PE32 16->39 dropped 41 C:\Users\user\AppData\Local\...\Xujrxn[1].exe, PE32 16->41 dropped 69 Contains functionalty to change the wallpaper 16->69 71 Contains functionality to steal Chrome passwords or cookies 16->71 73 Contains functionality to inject code into remote processes 16->73 75 3 other signatures 16->75 25 aspnet_compiler.exe 1 16->25         started        28 aspnet_compiler.exe 16->28         started        30 aspnet_compiler.exe 16->30         started        36 15 other processes 16->36 32 conhost.exe 21->32         started        34 conhost.exe 23->34         started        file9 signatures10 process11 dnsIp12 89 Tries to steal Instant Messenger accounts or passwords 25->89 91 Tries to steal Mail credentials (via file / registry access) 25->91 55 192.168.2.1 unknown unknown 36->55 57 transfer.sh 36->57 93 Machine Learning detection for dropped file 36->93 95 Tries to harvest and steal browser information (history, passwords, etc) 36->95 signatures13
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/71b55b8575963a25df831dbc936196e996ce48927577f2f4cc8a5398994b1cbd/
Threat name:
ByteCode-MSIL.Downloader.PsDownload
Create hunting rule
Status:
Malicious
First seen:
2022-08-02 04:25:25 UTC
File Type:
PE (.Net Exe)
Extracted files:
4
AV detection:
20 of 26 (76.92%)
Threat level:
  3/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=og2vxblvsy5clx4ddw6jgymw5glm4sesov37f5gmrjjzrgklds6q._file
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:remotehost collection persistence rat
Link:
https://tria.ge/reports/220802-gfqyjscggp/
Behaviour
Modifies Internet Explorer settings
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Accesses Microsoft Outlook accounts
Adds Run key to start application
Checks computer location settings
Downloads MZ/PE file
Executes dropped EXE
NirSoft MailPassView
NirSoft WebBrowserPassView
Nirsoft
Remcos
Malware Config
C2 Extraction:
obologs.work.gd:4044
Unpacked files
SH256 hash:
71b55b8575963a25df831dbc936196e996ce48927577f2f4cc8a5398994b1cbd
MD5 hash:
53667cce010367f3abf42bfb77f93bd4
SHA1 hash:
3ace14575611fabc33355d5a38a36d369594fb68
Link:
https://www.unpac.me/results/3dd14e43-00b8-4b55-87f4-02e443203cb5/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.38
Link:
https://yomi.yoroi.company/submissions/71b55b8575963a25df831dbc936196e996ce48927577f2f4cc8a5398994b1cbd

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.

Cape
Cape
https://www.capesandbox.com/analysis/295743/

Comments