MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4816f58220b5e07a83eb4a918fe200eb7317472efee4f9f1b27ab3de2a01ff9e. 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 7 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4816f58220b5e07a83eb4a918fe200eb7317472efee4f9f1b27ab3de2a01ff9e
SHA3-384 hash: e552236c4fb3f441621b4b96fbdb425cbfc25db99c30426b759954cc3461dd1ccb2127081c780009bbeccf8cf7e2f75e
SHA1 hash: df7fc8b36d1e0528679898cc0112917bd2413b66
MD5 hash: 2e2cdd2c6d78a411078fc351d89fd878
humanhash: chicken-double-carbon-violet
File name:INVOICE00207543NAKSEANAN-PACKING LIST 00207543NAKSEANAN.scr
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:1'229'312 bytes
First seen:2025-02-27 13:38:01 UTC
Last seen:2025-02-27 13:38:01 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'657 x AgentTesla, 19'468 x Formbook, 12'206 x SnakeKeylogger)
ssdeep 24576:IuCpLzI9M+5IAbUyz6TF5Nc9XBahr5OIYNs8c7kzdJ:ITU9MTLNc9RUOIYNL7
TLSH T19945F10C3FA2AE62C64D1B77C513145893FAC566E5EAF3AB19DD2CE11F22B54C08F852
TrID 71.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.2% (.EXE) Win64 Executable (generic) (10522/11/4)
6.3% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.3% (.EXE) Win32 Executable (generic) (4504/4/1)
2.0% (.ICL) Windows Icons Library (generic) (2059/9)
Magika pebin
dhash icon b0b268e8ccd486a2 (11 x Formbook, 5 x SnakeKeylogger, 3 x MassLogger)
Reporter threatcat_ch
Tags:exe RemcosRAT

Intelligence

File Origin
# of uploads :
2
# of downloads :
515
Origin country :
CH CH
Vendor Threat Intelligence
Malware family:
remcos
Create hunting rule
ID:
1
File name:
INVOICE00207543NAKSEANAN-PACKING LIST 00207543NAKSEANAN.scr
Verdict:
Malicious activity
Analysis date:
2025-02-27 13:43:31 UTC
Tags:
rat remcos remote stealer
Link:
https://app.any.run/tasks/a1f97dad-2e7b-4dea-8ade-208107c6cc6b

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Clean
Score:
82.2%
Link:
https://cyber-fortress.com/docs/result/index.php?id=67c06add2dfba428b46ecbd2
Tags:
n/a
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Сreating synchronization primitives
Connection attempt
Searching for synchronization primitives
Creating a window
Launching a service
Restart of the analyzed sample
Creating a file
Creating a process from a recently created file
Launching a process
Unauthorized injection to a recently created process
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
masquerade obfuscated obfuscated obfuscated packed packed packer_detected vbnet
Link:
https://www.filescan.io/uploads/67c06ac43c5f644bd93adabd/reports/6d739d05-5716-4f7f-97e2-813ffbb4f3a7/overview
Verdict:
Malicious
Labled as:
HackTool[Obfuscator]/MSIL.DeepSea
Link:
https://www.hybrid-analysis.com/sample/4816f58220b5e07a83eb4a918fe200eb7317472efee4f9f1b27ab3de2a01ff9e
Result
Verdict:
SUSPICIOUS
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Gathering data
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
rans.phis.troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1625615
Signature
.NET source code contains potential unpacker
.NET source code contains very large array initializations
C2 URLs / IPs found in malware configuration
Contains functionality to bypass UAC (CMSTPLUA)
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
Creates autostart registry keys with suspicious names
Found malware configuration
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
Joe Sandbox ML detected suspicious 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
Suricata IDS alerts for network traffic
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)
Writes to foreign memory regions
Yara detected AntiVM3
Yara detected Remcos RAT
Yara detected UAC Bypass using CMSTP
Yara detected WebBrowserPassView password recovery tool
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1625615 Sample: INVOICE00207543NAKSEANAN-PA... Startdate: 27/02/2025 Architecture: WINDOWS Score: 100 58 geoplugin.net 2->58 64 Suricata IDS alerts for network traffic 2->64 66 Found malware configuration 2->66 68 Malicious sample detected (through community Yara rule) 2->68 70 15 other signatures 2->70 10 INVOICE00207543NAKSEANAN-PACKING LIST 00207543NAKSEANAN.scr.exe 11 3 2->10         started        14 Adobe.exe 2->14         started        16 Adobe.exe 2->16         started        18 Adobe.exe 2->18         started        signatures3 process4 file5 56 INVOICE00207543NAK...KSEANAN.scr.exe.log, ASCII 10->56 dropped 82 Injects a PE file into a foreign processes 10->82 20 INVOICE00207543NAKSEANAN-PACKING LIST 00207543NAKSEANAN.scr.exe 2 4 10->20         started        24 Adobe.exe 14->24         started        26 Adobe.exe 14->26         started        28 Adobe.exe 14->28         started        34 2 other processes 14->34 30 Adobe.exe 16->30         started        32 Adobe.exe 18->32         started        signatures6 process7 file8 52 C:\ProgramData\Adobe-Reader\Adobe.exe, PE32 20->52 dropped 54 C:\ProgramData\...\Adobe.exe:Zone.Identifier, ASCII 20->54 dropped 76 Creates autostart registry keys with suspicious names 20->76 36 Adobe.exe 3 20->36         started        signatures9 process10 signatures11 72 Multi AV Scanner detection for dropped file 36->72 74 Injects a PE file into a foreign processes 36->74 39 Adobe.exe 36->39         started        process12 dnsIp13 60 104.250.180.178, 49709, 49711, 7902 M247GB United States 39->60 62 geoplugin.net 178.237.33.50, 49710, 80 ATOM86-ASATOM86NL Netherlands 39->62 78 Writes to foreign memory regions 39->78 80 Maps a DLL or memory area into another process 39->80 43 recover.exe 39->43         started        46 recover.exe 39->46         started        48 recover.exe 39->48         started        50 recover.exe 39->50         started        signatures14 process15 signatures16 84 Tries to steal Mail credentials (via file registry) 43->84 86 Tries to harvest and steal browser information (history, passwords, etc) 43->86 88 Tries to steal Instant Messenger accounts or passwords 46->88 90 Tries to steal Mail credentials (via file / registry access) 46->90
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/4816f58220b5e07a83eb4a918fe200eb7317472efee4f9f1b27ab3de2a01ff9e
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/4816f58220b5e07a83eb4a918fe200eb7317472efee4f9f1b27ab3de2a01ff9e/
Threat name:
Win32.Trojan.Znyonm
Create hunting rule
Status:
Malicious
First seen:
2025-02-27 09:40:51 UTC
File Type:
PE (.Net Exe)
Extracted files:
2
AV detection:
16 of 24 (66.67%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=jalplarawxqhva7ljkiy7yqa5nzrorzo73spt4nspkz54kqb76pa._file
Verdict:
malicious
Label(s):
unknown_loader_037
Create hunting rule
Similar samples:
error
RemcosRAT
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:remotehost collection discovery persistence rat
Link:
https://tria.ge/reports/250227-qxfctazjw3/
Behaviour
Checks processor information in registry
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Accesses Microsoft Outlook accounts
Adds Run key to start application
Checks computer location settings
Executes dropped EXE
Loads dropped DLL
Detected Nirsoft tools
NirSoft MailPassView
NirSoft WebBrowserPassView
Remcos
Remcos family
Malware Config
C2 Extraction:
104.250.180.178:7902
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/eafd3794-bb02-4022-83a5-dc533b3da232
Unpacked files
SH256 hash:
4816f58220b5e07a83eb4a918fe200eb7317472efee4f9f1b27ab3de2a01ff9e
MD5 hash:
2e2cdd2c6d78a411078fc351d89fd878
SHA1 hash:
df7fc8b36d1e0528679898cc0112917bd2413b66
Link:
https://www.unpac.me/results/701107bd-d8cd-40ee-bd59-29588eb59d6a/
SH256 hash:
75059fc2efc317195d1ef6ca4ad2de9f60df0d51deb4e4c3b7331a2ea208c14c
MD5 hash:
2bb551354bd33921ff6cc4cd9bc6152e
SHA1 hash:
33bb7ee8c8e9b2970861dea36652bb6c4adb02bf
Detections:
SUSP_OBF_NET_ConfuserEx_Name_Pattern_Jan24
Create hunting rule
SUSP_OBF_NET_Reactor_Indicators_Jan24
Create hunting rule
Link:
https://www.unpac.me/results/701107bd-d8cd-40ee-bd59-29588eb59d6a/
SH256 hash:
41d93de07dadf7de2143676f151e9a19e8d9f5527f770eed357d4447d7accb53
MD5 hash:
f2b38cd7ecd0743a1b84a969b18b342e
SHA1 hash:
439aee5deb3e18e70115cd31c9c245c29a6ae182
Link:
https://www.unpac.me/results/701107bd-d8cd-40ee-bd59-29588eb59d6a/
SH256 hash:
f6e208dbd8631cac4c61bbd86470a678fc1c55361c52b5bb74dff9846935786c
MD5 hash:
20817931b9818e57f472b6fe15aea26e
SHA1 hash:
96c91709547f37f370b5e56ea3b8d9b06fa9e7ac
Detections:
win_remcos_w0
Create hunting rule
win_remcos_auto
Create hunting rule
Remcos
Create hunting rule
malware_windows_remcos_rat
Create hunting rule
win_remcos_rat_unpacked
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
Create hunting rule
Link:
https://www.unpac.me/results/701107bd-d8cd-40ee-bd59-29588eb59d6a/
Parent samples :
2055e5a5204986da592e72c27400034b4cc1c940acacd8c2a093861f3cde5e5a
78a5958d02189160abf7e588dada6295e444b6522a45b8f556878ff56058edbc
4816f58220b5e07a83eb4a918fe200eb7317472efee4f9f1b27ab3de2a01ff9e
f96d8c627027bb1530f7e499e6e86c8f6b1724a2edab6e4faeaf10fea74be0ae
65b7cf7ab546e94fad0cbce12c9756dcb2af4aa833943beffdfcc448e00e4449
f4048c147a758eb5413a885a12c69fa5cd1b61668ae668942bcb7892e7f62584
e8fa06add1e83397ada8e5d1816a8e9ae2b3f6e86ec3d4a1264436cee4a26e25
ff3d90e2170a8b7046ea85bebee200591bb79717ec62c062ab14f75d01d438f5
cf6365bfb6ff4604e981baa9fab6a5f57c141e58a50401d8c273ab02844b7dbd
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/4816f58220b5e07a83eb4a918fe200eb7317472efee4f9f1b27ab3de2a01ff9e

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:Lumma_Stealer_Detection
Create hunting rule
Author:ashizZz
Description:Detects a specific Lumma Stealer malware sample using unique strings and behaviors
Reference:https://seanthegeek.net/posts/compromized-store-spread-lumma-stealer-using-fake-captcha/
Rule name:NET
Create hunting rule
Author:malware-lu
Rule name:NETexecutableMicrosoft
Create hunting rule
Author:malware-lu
Rule name:pe_imphash
Create hunting rule
Rule name:RANSOMWARE
Create hunting rule
Author:ToroGuitar
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:Sus_Obf_Enc_Spoof_Hide_PE
Create hunting rule
Author:XiAnzheng
Description:Check for Overlay, Obfuscating, Encrypting, Spoofing, Hiding, or Entropy Technique(can create FP)

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Malspam

RemcosRAT

Executable exe 4816f58220b5e07a83eb4a918fe200eb7317472efee4f9f1b27ab3de2a01ff9e

(this sample)

  
Delivery method
Distributed via e-mail attachment

BLint

The following table provides more information about this file using BLint. BLint is a Binary Linter to check the security properties, and capabilities in executables.

Findings
IDTitleSeverity
CHECK_AUTHENTICODEMissing Authenticodehigh
CHECK_DLL_CHARACTERISTICSMissing dll Security Characteristics (GUARD_CF)high

Comments