MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 79544f55395a00102be1fadae62f95c595a8c285e53ba278f49e1a55b20fa063. 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 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 79544f55395a00102be1fadae62f95c595a8c285e53ba278f49e1a55b20fa063
SHA3-384 hash: 3edaf80857320e588ccd6f424c3aed8c40fb4ed977f40966ec6b299c4b646f9265e67a249a37cbd4be262c7c7633d610
SHA1 hash: 2434dfa4b296cc6a79e8a1ea2db4e97d521fb1db
MD5 hash: 5b04a174242fe8ec3431df2359509abf
humanhash: fillet-kitten-low-hawaii
File name:z1P_O-2023022206131013az.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:662'016 bytes
First seen:2023-02-22 13:50:16 UTC
Last seen:2023-02-22 15:43:51 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'740 x AgentTesla, 19'602 x Formbook, 12'241 x SnakeKeylogger)
ssdeep 12288:UvnKeTSjsh2yp/Czk/37MUL/G9vlSgUkdmG7GwldE:USeMsh2yp/7/3wNvoGPlu
Threatray 1'790 similar samples on MalwareBazaar
TLSH T130E4016E6EAA45E6D940CDF5F1F34E000237C76DE473C7BAF6C8571475822AA890CB1A
TrID 59.4% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.6% (.SCR) Windows screen saver (13097/50/3)
8.5% (.EXE) Win64 Executable (generic) (10523/12/4)
5.3% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.0% (.EXE) Win16 NE executable (generic) (5038/12/1)
File icon (PE):PE icon
dhash icon d2e8ecb2b2a2b282 (106 x AgentTesla, 106 x Formbook, 24 x RedLineStealer)
Reporter FXOLabs
Tags:exe RemcosRAT

Intelligence

File Origin
# of uploads :
2
# of downloads :
236
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
remcos
Create hunting rule
ID:
1
File name:
z1P_O-2023022206131013az.exe
Verdict:
Malicious activity
Analysis date:
2023-02-22 13:51:13 UTC
Tags:
rat remcos stealer
Link:
https://app.any.run/tasks/dcecdab5-0e5e-4f82-98c6-a691335ac10a

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/369067/
Detection(s):
SecuriteInfo.com.Win32.Malware-gen.15121.6979.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a custom TCP request
Creating a file in the %AppData% subdirectories
Creating a process from a recently created file
Launching a process
Creating a file
Сreating synchronization primitives
DNS request
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
67%
Tags:
aspnet_compiler.exe packed
Link:
https://www.filescan.io/uploads/63f61dc642bf85850e40c8c4/reports/f51f7cf0-1baf-40c8-9534-b2540446e326/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/79544f55395a00102be1fadae62f95c595a8c285e53ba278f49e1a55b20fa063
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:
Malicious
Link:
https://analyze.intezer.com/analyses/4917ff38-2f63-4639-aff4-7cd29d692600
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
phis.troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1180629
Signature
Allocates memory in foreign processes
C2 URLs / IPs found in malware configuration
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 domain / URL
Multi AV Scanner detection for dropped file
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)
Writes to foreign memory regions
Yara detected Remcos RAT
Yara detected UAC Bypass using CMSTP
Yara detected WebBrowserPassView password recovery tool
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 813457 Sample: z1P_O-2023022206131013az.exe Startdate: 22/02/2023 Architecture: WINDOWS Score: 100 45 Multi AV Scanner detection for domain / URL 2->45 47 Malicious sample detected (through community Yara rule) 2->47 49 Multi AV Scanner detection for dropped file 2->49 51 8 other signatures 2->51 7 z1P_O-2023022206131013az.exe 5 2->7         started        process3 file4 29 C:\Users\user\AppData\...\RZTHXHelper.exe, PE32 7->29 dropped 31 C:\Users\...\z1P_O-2023022206131013az.exe.log, ASCII 7->31 dropped 53 Writes to foreign memory regions 7->53 55 Allocates memory in foreign processes 7->55 57 Injects a PE file into a foreign processes 7->57 11 aspnet_compiler.exe 2 13 7->11         started        15 powershell.exe 5 7->15         started        signatures5 process6 dnsIp7 35 obologs.work.gd 185.156.175.35, 34346, 49697, 49698 M247GB Romania 11->35 37 geoplugin.net 178.237.33.50, 49699, 80 ATOM86-ASATOM86NL Netherlands 11->37 59 Maps a DLL or memory area into another process 11->59 17 aspnet_compiler.exe 1 11->17         started        20 aspnet_compiler.exe 1 11->20         started        22 aspnet_compiler.exe 11->22         started        26 34 other processes 11->26 24 conhost.exe 15->24         started        signatures8 process9 dnsIp10 39 Tries to steal Instant Messenger accounts or passwords 17->39 41 Tries to steal Mail credentials (via file / registry access) 17->41 33 192.168.2.1 unknown unknown 26->33 43 Tries to harvest and steal browser information (history, passwords, etc) 26->43 signatures11
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/79544f55395a00102be1fadae62f95c595a8c285e53ba278f49e1a55b20fa063/
Threat name:
Win32.Downloader.Seraph
Create hunting rule
Status:
Malicious
First seen:
2023-02-22 05:46:18 UTC
File Type:
PE (.Net Exe)
Extracted files:
12
AV detection:
24 of 25 (96.00%)
Threat level:
  3/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=pfke6vjzliabak7b7lnoml4vywk2rquf4u52e6hutynflmqpubrq._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
03541b2cf3bf022eda584b9ead6b6edeb7a47e8ccaa99b2415ee56694c9868cb
RemcosRAT
12318e52e2bdf0b05a48eb1d96f2f39a24c64525473c50317f1d9caa36d682bf
RemcosRAT
15fde337ddfb3d5665b441b1c2b6391a1584dcf04b28b5316300b52ae63673e8
RemcosRAT
221784974f49f2b54c90c63ce6cf9550d94b15c3442c29c959300dbbf5b91f61
RemcosRAT
5ca676b334d8a3f4542877a696a7092b29dbdeddabcd70af2a80e5c8384a75b6
RemcosRAT
9172e039e1e9412067ba121f93ec85c4883992eefe71438b6b02e0635152732d
RemcosRAT
c8092ae8e5c2fcb2f4ed5be1dac0723ef951a8b445c45aa68376d093fa3a5623
RemcosRAT
+ 1'780 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/230222-q5s9msdf8t/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Accesses Microsoft Outlook accounts
Adds Run key to start application
.NET Reactor proctector
NirSoft MailPassView
NirSoft WebBrowserPassView
Nirsoft
Remcos
Malware Config
C2 Extraction:
obologs.work.gd:34346
Unpacked files
SH256 hash:
fd56a07f2da75c84337cbf94e0acafc09fb909cfb187a0ae214827ce2c4708bb
MD5 hash:
d93c5f59ddc41313bf36f106a2f1fe17
SHA1 hash:
97c5cd9d0689c1cd74685bc979122a13eba3fcc9
Link:
https://www.unpac.me/results/c32e0f1e-d537-4945-aba7-5a2f9b7fcae7/
SH256 hash:
6b78a3e99cdbf3456a743ea379d3bff2d526bab1143d24ea4f5327df65cd4f4c
MD5 hash:
604b6d6440d02b3abe41ec6d537f3ed8
SHA1 hash:
791e7f925ed366bb7bec11d004df4a9861b6e889
Detections:
Remcos
Create hunting rule
win_remcos_auto
Create hunting rule
Link:
https://www.unpac.me/results/c32e0f1e-d537-4945-aba7-5a2f9b7fcae7/
Parent samples :
79544f55395a00102be1fadae62f95c595a8c285e53ba278f49e1a55b20fa063
a9965688e4d34b92334193a59ab471709521d24ea65f1f9e97caaab3470e1e25
153f00cfcabb3fc9bf6ca01da20de1702cae1957d4b0fb998db99ad502896f76
844d71676420926ac69a998eecb47e4873ba8ed146ae2385770a530a2fffcf36
881b9954a4f1debc7e45fecb6072f05daa542c368af208156fd624d5b5fabc95
d1698bf562afeb9d40e79a3ed0acc152abb2dfed815e0f6d8a91346916815a7f
SH256 hash:
79544f55395a00102be1fadae62f95c595a8c285e53ba278f49e1a55b20fa063
MD5 hash:
5b04a174242fe8ec3431df2359509abf
SHA1 hash:
2434dfa4b296cc6a79e8a1ea2db4e97d521fb1db
Link:
https://www.unpac.me/results/c32e0f1e-d537-4945-aba7-5a2f9b7fcae7/
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/79544f55395a/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/79544f55395a00102be1fadae62f95c595a8c285e53ba278f49e1a55b20fa063

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.

Malspam

RemcosRAT

Executable exe 79544f55395a00102be1fadae62f95c595a8c285e53ba278f49e1a55b20fa063

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/369067/

Comments