MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 d539ab19fd873bd36c22b38f3d8a85683220a7bcce13a9c962652d6165c33c2e. 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: 18


Intelligence 18 IOCs YARA 21 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: d539ab19fd873bd36c22b38f3d8a85683220a7bcce13a9c962652d6165c33c2e
SHA3-384 hash: 49dfa0bd98f0d8fda3a4724f67cd54cb60cceb6c60ab7f63c7a37893005eea7db058b3abbba2a89158031765f44b1b5b
SHA1 hash: 5e352164c7bb26eacd4a03f2b79a12761565a5f7
MD5 hash: 1c51fe759d1e211ae4a3d448b5c3bd22
humanhash: social-cola-purple-zulu
File name:Swift_Copy 70% payment.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:1'000'456 bytes
First seen:2025-05-19 09:13:24 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'462 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 24576:kOqWkVcFqR9s8etQrVsLyaEgBPPf57RG8BVYMcOO:kOqnYqR9L7hs2vwRGMyyO
Threatray 932 similar samples on MalwareBazaar
TLSH T11C25124537669B03C1F61BF40A62E27487B66C8DA421C30BEDDA7DEF3570BA46885B13
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 48d4f4f0f0f0d8c0 (37 x RedLineStealer, 18 x AgentTesla, 9 x SnakeKeylogger)
Reporter adrian__luca
Tags:exe RemcosRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
518
Origin country :
HU HU
Vendor Threat Intelligence
Malware family:
remcos
Create hunting rule
ID:
1
File name:
42d0abda-f5b2-4f88-b8ed-05404fedf50b
Verdict:
Malicious activity
Analysis date:
2025-05-19 09:34:30 UTC
Tags:
rat remcos remote netreactor
Link:
https://app.any.run/tasks/42d0abda-f5b2-4f88-b8ed-05404fedf50b

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
Win.Packed.Boxter-10005643-0
Create hunting rule

Verdict:
Malicious
Score:
99.1%
Link:
https://cyber-fortress.com/docs/result/index.php?id=682af67b375681df7c1aa615
Tags:
virus msil sage
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Сreating synchronization primitives
Creating a process with a hidden window
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Adding an access-denied ACE
Creating a file in the %temp% directory
Launching a process
Creating a file
Searching for the window
Connection attempt
Sending a custom TCP request
Forced shutdown of a system process
Adding an exclusion to Microsoft Defender
Enabling autorun by creating a file
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
expired-cert invalid-signature masquerade obfuscated packed packed packer_detected signed
Link:
https://www.filescan.io/uploads/682af661bff72ff46b661f0a/reports/da2ca131-8508-4a4e-9a0a-0650dcc6b87a/overview
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/d539ab19fd873bd36c22b38f3d8a85683220a7bcce13a9c962652d6165c33c2e
Malware family:
REMCOS
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/82182c7a-1678-4d1e-8060-7d2d99e4b0d6
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
rans.troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1693867
Signature
.NET source code contains potential unpacker
Adds a directory exclusion to Windows Defender
Allocates memory in foreign processes
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
Detected Remcos RAT
Found 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
Joe Sandbox ML detected suspicious sample
Loading BitLocker PowerShell Module
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Sigma detected: Remcos
Sigma detected: Scheduled temp file as task from temp location
Suricata IDS alerts for network traffic
Uses schtasks.exe or at.exe to add and modify task schedules
Writes to foreign memory regions
Yara detected AntiVM3
Yara detected Remcos RAT
Yara detected UAC Bypass using CMSTP
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1693867 Sample: Swift_Copy 70% payment.exe Startdate: 19/05/2025 Architecture: WINDOWS Score: 100 52 Suricata IDS alerts for network traffic 2->52 54 Found malware configuration 2->54 56 Malicious sample detected (through community Yara rule) 2->56 58 13 other signatures 2->58 7 Swift_Copy 70% payment.exe 7 2->7         started        11 GAehybrVvYEBBK.exe 5 2->11         started        process3 file4 40 C:\Users\user\AppData\...behaviorgraphAehybrVvYEBBK.exe, PE32 7->40 dropped 42 C:\...behaviorgraphAehybrVvYEBBK.exe:Zone.Identifier, ASCII 7->42 dropped 44 C:\Users\user\AppData\Local\...\tmpEB35.tmp, XML 7->44 dropped 46 C:\Users\...\Swift_Copy 70% payment.exe.log, ASCII 7->46 dropped 60 Adds a directory exclusion to Windows Defender 7->60 13 vbc.exe 4 4 7->13         started        18 powershell.exe 23 7->18         started        20 powershell.exe 23 7->20         started        22 schtasks.exe 1 7->22         started        62 Multi AV Scanner detection for dropped file 11->62 64 Writes to foreign memory regions 11->64 66 Allocates memory in foreign processes 11->66 68 Injects a PE file into a foreign processes 11->68 24 vbc.exe 11->24         started        26 schtasks.exe 11->26         started        signatures5 process6 dnsIp7 50 196.251.73.206, 2404, 49716, 49724 Web4AfricaZA Seychelles 13->50 48 C:\ProgramData\remcos\logs.dat, data 13->48 dropped 70 Contains functionality to bypass UAC (CMSTPLUA) 13->70 72 Detected Remcos RAT 13->72 74 Contains functionalty to change the wallpaper 13->74 78 4 other signatures 13->78 28 conhost.exe 13->28         started        76 Loading BitLocker PowerShell Module 18->76 30 conhost.exe 18->30         started        32 WmiPrvSE.exe 18->32         started        34 conhost.exe 20->34         started        36 conhost.exe 22->36         started        38 conhost.exe 26->38         started        file8 signatures9 process10
Score:
98%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/d539ab19fd873bd36c22b38f3d8a85683220a7bcce13a9c962652d6165c33c2e
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/d539ab19fd873bd36c22b38f3d8a85683220a7bcce13a9c962652d6165c33c2e/
Threat name:
Win32.Backdoor.Remcos
Create hunting rule
Status:
Malicious
First seen:
2025-05-14 22:32:00 UTC
File Type:
PE (.Net Exe)
Extracted files:
11
AV detection:
31 of 38 (81.58%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=2u42wgp5q455g3bcwoht3cufnazcbj54zyj2tslcmuwwczodhqxa._file
Verdict:
malicious
Label(s):
unc_loader_037
Create hunting rule
remcos
Create hunting rule
Similar samples:
074efb70a49088638d0e62cc3637a75627afe9286c3f2d024e78ea9f247582fe
RemcosRAT
2e4a8adeb10758473cd1d42e9869ee03840016814c6cfc0465303b19afaca46f
RemcosRAT
40c6917c29ca6cda32661403a08112ad7cab7e8c3c0cc2f2df43ce304fd2c9a1
RemcosRAT
6714c82529a444b8ce3f8bfae085604f2618954394d7812e68f473ebfca78a26
RemcosRAT
e2b1474db72b91f6e9f35fefb2c9608a5371d21e519e392344d5246b7ec062fd
RemcosRAT
f6b63b291d9596ec5ab7aa65997850c9ac23feb8e5e67a1bf09dfc84221d10bd
RemcosRAT
+ 922 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:wzzybulkspamming discovery execution rat
Link:
https://tria.ge/reports/250519-k7cf1swkt4/
Behaviour
Scheduled Task/Job: Scheduled Task
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Checks computer location settings
Uses the VBS compiler for execution
Command and Scripting Interpreter: PowerShell
Remcos
Remcos family
Malware Config
C2 Extraction:
196.251.73.206:2404
Verdict:
Malicious
Tags:
Win.Packed.Boxter-10005643-0
YARA:
n/a
Link:
https://app.threat.zone/submission/57008ce6-b70c-4d6b-adbd-5c9389ed8baa
Unpacked files
SH256 hash:
d539ab19fd873bd36c22b38f3d8a85683220a7bcce13a9c962652d6165c33c2e
MD5 hash:
1c51fe759d1e211ae4a3d448b5c3bd22
SHA1 hash:
5e352164c7bb26eacd4a03f2b79a12761565a5f7
Link:
https://www.unpac.me/results/2599744e-2b08-4694-9a1f-59d3d563b1bc/
SH256 hash:
05bc95733cb251d17dc757052a620df823931a6d69effeaa0a67bb20f6bf6a4a
MD5 hash:
5ce726272f22e42f31a71bf3da2c483f
SHA1 hash:
1bad9f84a6a8f0800bbe8e699f274fbd2583f1ea
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/2599744e-2b08-4694-9a1f-59d3d563b1bc/
SH256 hash:
e65bc4732f18966eeaba9700bb83489074f63082cf28bc05e90d278a1761ac25
MD5 hash:
f568aa0b7be96ed2102e8de46d59248b
SHA1 hash:
5031c8d479988ff22716c13646fc6ba8cd6a78d8
Detections:
SUSP_OBF_NET_Reactor_Indicators_Jan24
Create hunting rule
Link:
https://www.unpac.me/results/2599744e-2b08-4694-9a1f-59d3d563b1bc/
Parent samples :
eba602f26ca14d5e494059001ecf363110ba504d9e0184b8abfa45905bd650cc
3ff3db68a75d4c52f3910396564f35999b3571ed75850df0c403b851433582ec
285bd22ba49a3de603e9fff856a0bd3111e43629ad29e24bb41178afd93ece23
54f015287731308328345efdc18a593d3b5a57efdd04278efb9da7f5127df37f
ca081d2e9e512e1516edc180262c4309dda83ad714a281abd26fc1a658bced01
c3f39d499f8599e009697219a0c0f9b5fd91848b693fcaf4abdc0d15bdc67de0
44123cf2ed8f575c4643cacfcd51e18188edeca34b343af433c98ac03fb691ea
76f35c8ecea90bb9709af24f9183489a711f04fc00f26d3cae74fbcdf7bde6c5
d539ab19fd873bd36c22b38f3d8a85683220a7bcce13a9c962652d6165c33c2e
ef9e1440789a46cd00ebe7bde8526eefd00e6d1363299d3ae3c1b01e891d7b35
SH256 hash:
4ce48fc92b08caeb926d4c8a3de7422113348c801250443c7925f238682e74c9
MD5 hash:
9539e7c79f10b11135d7e05efa5034b5
SHA1 hash:
d81a83c769056f3df268361502c557daa2b23826
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/2599744e-2b08-4694-9a1f-59d3d563b1bc/
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/d539ab19fd87/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.

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:cobalt_strike_tmp01925d3f
Create hunting rule
Author:The DFIR Report
Description:files - file ~tmp01925d3f.exe
Reference:https://thedfirreport.com
Rule name:DebuggerCheck__API
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:Disable_Defender
Create hunting rule
Author:iam-py-test
Description:Detect files disabling or modifying Windows Defender, Windows Firewall, or Microsoft Smartscreen
Rule name:golang_bin_JCorn_CSC846
Create hunting rule
Author:Justin Cornwell
Description:CSC-846 Golang detection ruleset
Rule name:INDICATOR_KB_CERT_7c1118cbbadc95da3752c46e47a27438
Create hunting rule
Author:ditekSHen
Description:Detects executables signed with stolen, revoked or invalid certificates
Rule name:INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
Create hunting rule
Author:ditekSHen
Description:Detects Windows exceutables bypassing UAC using CMSTP COM interfaces. MITRE (T1218.003)
Rule name:NET
Create hunting rule
Author:malware-lu
Rule name:pe_detect_tls_callbacks
Create hunting rule
Rule name:PE_Digital_Certificate
Create hunting rule
Author:albertzsigovits
Rule name:pe_imphash
Create hunting rule
Rule name:Remcos
Create hunting rule
Author:kevoreilly
Description:Remcos Payload
Rule name:REMCOS_RAT_variants
Create hunting rule
Rule name:Remcos_unpacked_PulseIntel
Create hunting rule
Author:PulseIntel
Description:Remcos Payload
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)
Rule name:ThreadControl__Context
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:Windows_Trojan_Remcos_b296e965
Create hunting rule
Author:Elastic Security
Reference:https://www.elastic.co/security-labs/exploring-the-ref2731-intrusion-set
Rule name:win_remcos_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:Detects win.remcos.
Rule name:win_remcos_rat_unpacked
Create hunting rule
Author:Matthew @ Embee_Research
Description:Detects strings present in remcos rat Samples.
Rule name:win_remcos_w0
Create hunting rule
Author:Matthew @ Embee_Research
Description:Detects strings present in remcos rat Samples.
Rule name:yarahub_win_remcos_rat_unpacked_aug_2023
Create hunting rule
Author:Matthew @ Embee_Research

File information

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

Malspam

RemcosRAT

Executable exe d539ab19fd873bd36c22b38f3d8a85683220a7bcce13a9c962652d6165c33c2e

(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 (HIGH_ENTROPY_VA)high

Comments