MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 1587d0df87cff791bee9142151cd753acdc57571af58b7ce16a616afb92bac94. 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 7 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 1587d0df87cff791bee9142151cd753acdc57571af58b7ce16a616afb92bac94
SHA3-384 hash: 18eefde15eae2f9a76a095aae6145db2687b6bd772762a4bf762653595dcb1895f68db5e89705e98fa4e9305fa0a0faf
SHA1 hash: 0aa0f9651c32da7a13c3ba8c936d1aa539c179be
MD5 hash: bc037e0bfd04424644ab83f335b50d77
humanhash: princess-pluto-mango-oklahoma
File name:ungziped_file
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:940'552 bytes
First seen:2025-03-17 12:02:05 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 24576:Gu4zFRSfVcnx+tnF51AV26rrZsx+EM/9Jzbda04J6k7dg:Gu4zF0Rn1AVZTbdLS6l
TLSH T1841523A49679DF53DAB417F00A72D23047B6BF1DF820E24A8EF69CCB3021B642619757
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
Reporter adrian__luca
Tags:exe RemcosRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
452
Origin country :
HU HU
Vendor Threat Intelligence
Malware family:
remcos
Create hunting rule
ID:
1
File name:
ungziped_file
Verdict:
Malicious activity
Analysis date:
2025-03-17 12:06:03 UTC
Tags:
remcos rat remote autorun-sched
Link:
https://app.any.run/tasks/b5887986-f5da-41c0-bc7f-ccfac398daeb

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
Score:
97.4%
Link:
https://cyber-fortress.com/docs/result/index.php?id=67d823d43962f1a6f47257e6
Tags:
remcos shell virus msil
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
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
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Setting a keyboard event handler
DNS request
Connection attempt
Sending a custom TCP request
Sending an HTTP GET request
Adding an exclusion to Microsoft Defender
Enabling autorun by creating a file
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/1587d0df87cff791bee9142151cd753acdc57571af58b7ce16a616afb92bac94
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.
Malware family:
REMCOS
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/164b66ff-64b0-41a5-be49-1eceed75fa94
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
rans.troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1640562
Signature
.NET source code contains potential unpacker
Adds a directory exclusion to Windows Defender
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
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
Delayed program exit found
Found malware configuration
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: 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
Yara detected AntiVM3
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1640562 Sample: ungziped_file.exe Startdate: 17/03/2025 Architecture: WINDOWS Score: 100 46 oyo.work.gd 2->46 48 geoplugin.net 2->48 54 Suricata IDS alerts for network traffic 2->54 56 Found malware configuration 2->56 58 Malicious sample detected (through community Yara rule) 2->58 60 9 other signatures 2->60 8 ungziped_file.exe 7 2->8         started        12 wcxUnWLNw.exe 5 2->12         started        signatures3 process4 file5 38 C:\Users\user\AppData\Roaming\wcxUnWLNw.exe, PE32 8->38 dropped 40 C:\Users\...\wcxUnWLNw.exe:Zone.Identifier, ASCII 8->40 dropped 42 C:\Users\user\AppData\Local\...\tmp83C2.tmp, XML 8->42 dropped 44 C:\Users\user\...\ungziped_file.exe.log, ASCII 8->44 dropped 62 Uses schtasks.exe or at.exe to add and modify task schedules 8->62 64 Adds a directory exclusion to Windows Defender 8->64 14 ungziped_file.exe 2 16 8->14         started        18 powershell.exe 23 8->18         started        20 powershell.exe 22 8->20         started        22 schtasks.exe 1 8->22         started        66 Multi AV Scanner detection for dropped file 12->66 68 Contains functionalty to change the wallpaper 12->68 70 Contains functionality to steal Chrome passwords or cookies 12->70 72 3 other signatures 12->72 24 schtasks.exe 12->24         started        26 wcxUnWLNw.exe 12->26         started        signatures6 process7 dnsIp8 50 oyo.work.gd 176.65.141.49, 2431, 59402, 59407 WEBTRAFFICDE Germany 14->50 52 geoplugin.net 178.237.33.50, 59403, 59408, 80 ATOM86-ASATOM86NL Netherlands 14->52 74 Installs a global keyboard hook 14->74 76 Loading BitLocker PowerShell Module 18->76 28 conhost.exe 18->28         started        30 WmiPrvSE.exe 18->30         started        32 conhost.exe 20->32         started        34 conhost.exe 22->34         started        36 conhost.exe 24->36         started        signatures9 process10
Score:
97%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/1587d0df87cff791bee9142151cd753acdc57571af58b7ce16a616afb92bac94
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/1587d0df87cff791bee9142151cd753acdc57571af58b7ce16a616afb92bac94/
Threat name:
Win32.Trojan.CrypterX
Create hunting rule
Status:
Malicious
First seen:
2025-03-11 09:03:35 UTC
File Type:
PE (.Net Exe)
Extracted files:
8
AV detection:
26 of 36 (72.22%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=cwd5bx4hz73zdpxjcqqvdtlvhlg4k5lrv5mlptqwuylk7ojlvska._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
unc_loader_037
Create hunting rule
Similar samples:
error
RemcosRAT
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:icu discovery execution rat
Link:
https://tria.ge/reports/250317-n7j3mssnv7/
Behaviour
Scheduled Task/Job: Scheduled Task
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
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
Command and Scripting Interpreter: PowerShell
Remcos
Remcos family
Malware Config
C2 Extraction:
oyo.work.gd:2431
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/db2a0a55-d2e3-4682-bba4-a59fe8978906
Unpacked files
SH256 hash:
1587d0df87cff791bee9142151cd753acdc57571af58b7ce16a616afb92bac94
MD5 hash:
bc037e0bfd04424644ab83f335b50d77
SHA1 hash:
0aa0f9651c32da7a13c3ba8c936d1aa539c179be
Link:
https://www.unpac.me/results/48bf6da5-9e20-4d7c-a138-83d631419796/
SH256 hash:
4ef24e7bc079a92c7b5b4129831e01e14e6ee54450088553381c3071b1efae7f
MD5 hash:
a55bbf5514900684cf2f99199e31621f
SHA1 hash:
09b415f0fb322a66777cb519a953b9448aeb3bdb
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/48bf6da5-9e20-4d7c-a138-83d631419796/
SH256 hash:
de8c9e136cdee47f85a41376993c3384591a5444fe86b558d938f5126cd07c7e
MD5 hash:
b94f77c5ccefb69ea3f0e8473c253ee4
SHA1 hash:
1cec543b1679dfa17f70553dcc17d84b881b31ea
Detections:
INDICATOR_EXE_Packed_SmartAssembly
Create hunting rule
Link:
https://www.unpac.me/results/48bf6da5-9e20-4d7c-a138-83d631419796/
Parent samples :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 hash:
31918e8fda9c8ab5a65d4c3fa1285410edeffc50d0a624d98ea7baced0cd0d97
MD5 hash:
25e83008c6d89c541def321fbffb2586
SHA1 hash:
fb88c2c5f9c1ce78224d18b410b7f3596e6c3545
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_EventViewer
Create hunting rule
Link:
https://www.unpac.me/results/48bf6da5-9e20-4d7c-a138-83d631419796/
Parent samples :
baa92cdc50fba4cec0928b6b1f7d1b89611dedfb9ddb2f1bef9236bc0422c460
f6e4833668ca8d61f06a531d2dbaa1ec38f0905c7a3d4523c1cb142df066d74e
0bc4589749f91661e58192bb1200809244d27248e8ee1935baeaaaefd60aa7f6
1587d0df87cff791bee9142151cd753acdc57571af58b7ce16a616afb92bac94
1b9ffe88ec292067ef1eafeffa284d8fb12a02b0d52f38fbe6834ab7a5c05009
48075512d81806049d193cf798c12f30110cb03ccd0f18bc69e9aa1af69693f8
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/1587d0df87cff791bee9142151cd753acdc57571af58b7ce16a616afb92bac94

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:AgentTesla_DIFF_Common_Strings_01
Create hunting rule
Author:schmidtsz
Description:Identify partial Agent Tesla strings
Rule name:INDICATOR_KB_CERT_7c1118cbbadc95da3752c46e47a27438
Create hunting rule
Author:ditekSHen
Description:Detects executables signed with stolen, revoked or invalid certificates
Rule name:NET
Create hunting rule
Author:malware-lu
Rule name:PE_Digital_Certificate
Create hunting rule
Author:albertzsigovits
Rule name:pe_imphash
Create hunting rule
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 1587d0df87cff791bee9142151cd753acdc57571af58b7ce16a616afb92bac94

(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

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