MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 79b1315cab839553008486cf182981ce0a36c1755a83e37f7b107cdb7266f0cb. 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: 19


Intelligence 19 IOCs YARA 7 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 79b1315cab839553008486cf182981ce0a36c1755a83e37f7b107cdb7266f0cb
SHA3-384 hash: 459679c1cb9b4a605cae888cba188e433c6e841580a22bb8a514b8f94a62ec591a5ae77517b6b898ee5339b70725f9fb
SHA1 hash: 9d5eb75968bfe5a1e12af2d81f8b20322c77f2ec
MD5 hash: 0e9e305e1e69c435383eb73f66c63530
humanhash: football-princess-sodium-twenty
File name:rSO3315RCOHBLKHRTMP249013CO240913.pdf.scr
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:947'200 bytes
First seen:2024-09-11 19:59:57 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:Ibo2IFemqKLdQ+tExSVoVKbcqmuDaomTzktr:Ic2tlKLzsAqAhtSgt
TLSH T1C5152384B5FC6B57E9BD4BF641B485810379B12A6616E71C1DAA30CD3F77B0A82C8B07
TrID 71.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.2% (.EXE) Win64 Executable (generic) (10523/12/4)
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
File icon (PE):PE icon
dhash icon 70983a848494a0e0 (6 x Formbook, 4 x AgentTesla, 2 x SnakeKeylogger)
Reporter FXOLabs
Tags:exe RemcosRAT scr

Intelligence

File Origin
# of uploads :
1
# of downloads :
406
Origin country :
BR BR
Vendor Threat Intelligence
Malware family:
remcos
Create hunting rule
ID:
1
File name:
rSO3315RCOHBLKHRTMP249013CO240913.pdf.scr
Verdict:
Malicious activity
Analysis date:
2024-09-11 20:04:18 UTC
Tags:
remcos
Link:
https://app.any.run/tasks/f870d1e5-4bd9-4f10-9353-97a0abf2ded1

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Trojan.PackedNET.3053.12461.19396.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
95.7%
Link:
https://cyber-fortress.com/docs/result/index.php?id=66e1f6ce76bc4542b0497878
Tags:
Stealth Trojan Remcos
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Restart of the analyzed sample
Creating a file
Сreating synchronization primitives
Creating a process from a recently created file
Connection attempt
Unauthorized injection to a recently created process
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Unauthorized injection to a recently created process by context flags manipulation
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
explorer lolbin masquerade packed remcos
Link:
https://www.filescan.io/uploads/66e1f6cbac80a0110f67b252/reports/8d2702c1-db76-4655-88da-405f923026d2/overview
Verdict:
Malicious
Labled as:
Malware
Link:
https://www.hybrid-analysis.com/sample/79b1315cab839553008486cf182981ce0a36c1755a83e37f7b107cdb7266f0cb
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.
Malware family:
REMCOS
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/5128f91b-9ef4-4dc1-9e63-82cdd2a83768
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
rans.troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1509638
Signature
.NET source code contains potential unpacker
AI detected suspicious sample
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
Delayed program exit found
Drops executable to a common third party application directory
Found malware configuration
Initial sample is a PE file and has a suspicious name
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)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Suricata IDS alerts for network traffic
Uses an obfuscated file name to hide its real file extension (double extension)
Yara detected AntiVM3
Yara detected Generic Downloader
Yara detected Remcos RAT
Yara detected UAC Bypass using CMSTP
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1509638 Sample: rSO3315RCOHBLKHRTMP249013CO... Startdate: 11/09/2024 Architecture: WINDOWS Score: 100 42 Suricata IDS alerts for network traffic 2->42 44 Found malware configuration 2->44 46 Malicious sample detected (through community Yara rule) 2->46 48 11 other signatures 2->48 8 rSO3315RCOHBLKHRTMP249013CO240913.pdf.scr.exe 3 2->8         started        12 Adobe.exe 2 2->12         started        14 Adobe.exe 2 2->14         started        16 Adobe.exe 2 2->16         started        process3 file4 38 rSO3315RCOHBLKHRTM...913.pdf.scr.exe.log, ASCII 8->38 dropped 54 Contains functionality to bypass UAC (CMSTPLUA) 8->54 56 Contains functionalty to change the wallpaper 8->56 58 Contains functionality to steal Chrome passwords or cookies 8->58 62 3 other signatures 8->62 18 rSO3315RCOHBLKHRTMP249013CO240913.pdf.scr.exe 2 4 8->18         started        60 Injects a PE file into a foreign processes 12->60 22 Adobe.exe 12->22         started        24 Adobe.exe 14->24         started        26 Adobe.exe 16->26         started        signatures5 process6 file7 34 C:\ProgramData\Adobe\Adobe.exe, PE32 18->34 dropped 36 C:\ProgramData\...\Adobe.exe:Zone.Identifier, ASCII 18->36 dropped 50 Creates autostart registry keys with suspicious names 18->50 52 Drops executable to a common third party application directory 18->52 28 Adobe.exe 3 18->28         started        signatures8 process9 signatures10 64 Multi AV Scanner detection for dropped file 28->64 66 Machine Learning detection for dropped file 28->66 68 Injects a PE file into a foreign processes 28->68 31 Adobe.exe 3 1 28->31         started        process11 dnsIp12 40 104.250.180.178, 49734, 49742, 49744 M247GB United States 31->40
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/79b1315cab839553008486cf182981ce0a36c1755a83e37f7b107cdb7266f0cb
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/79b1315cab839553008486cf182981ce0a36c1755a83e37f7b107cdb7266f0cb/
Threat name:
Win32.Backdoor.Remcos
Create hunting rule
Status:
Malicious
First seen:
2024-09-11 08:44:55 UTC
File Type:
PE (.Net Exe)
Extracted files:
15
AV detection:
21 of 24 (87.50%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=pgytcxflqokvgaeeq3hrqkmbzyfdnqlvlkb6g733cb6nw4tg6dfq._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:remotehost discovery persistence rat
Link:
https://tria.ge/reports/240911-yqzf4szekj/
Behaviour
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Adds Run key to start application
Checks computer location settings
Executes dropped EXE
Loads dropped DLL
Remcos
Malware Config
C2 Extraction:
104.250.180.178:7902
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/6356e638-cfbd-4fa4-aa08-a40fdd6cc5ec
Unpacked files
SH256 hash:
f8acd1f804a3cffbb92e2ff18c8b3518ba6186e668bdf5f0b18a6b511845b747
MD5 hash:
c8fe8af0d7470178cb515dd6dd352b79
SHA1 hash:
51535501421461ec1fc70e2eb5cce56b06f9f0e2
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/09056a75-e2ea-46c6-9805-ff64ca3d0c5c/
SH256 hash:
5f54f1bec9ba28b84b92478b3db46235c07fa7b4fb106111dd68e4af94afcea3
MD5 hash:
e3f85d3db1a13a521b6dd6477298f9c5
SHA1 hash:
3f40142ffa5a2093a864446af3b80e0fb03f3bfd
Detections:
Remcos
Create hunting rule
win_remcos_auto
Create hunting rule
win_remcos_w0
Create hunting rule
malware_windows_remcos_rat
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
Create hunting rule
Link:
https://www.unpac.me/results/09056a75-e2ea-46c6-9805-ff64ca3d0c5c/
Parent samples :
aa5728008a7a4b1173fc74eb5e41666688baddefbb2d5214d46cd6815646b5f3
9b9ba6e3df79c2acd5ecdb46d3fb5f4828bcad17b899841fda48bef82f7ab1a1
70ee8c0d07ceccded841b84da618617ffade6266373de9470d14c27a67042ea6
524c637935103ad405e691fd652910fd2d7aab643348818a30b86ee24f3e70b0
561070b0ac5bfae16de4f01cbfc6fbf6b40d3afd5413de4c2abf8c844e7e9fe4
1b754a8b7d0c1d3be17f751d327b38961c3d6ea3b8769c9c8edb1f318dfd0787
6b21cf5ebc20615576167925b27adad49dd095dbca80a7a47101fa824295057c
d3ab0c4ddfbdbce6b1f200436de1c9d1f94567b06a420dc453d02460452cebca
79b1315cab839553008486cf182981ce0a36c1755a83e37f7b107cdb7266f0cb
5e3a1a463e8db9ecffcce81fcd53169562dc8dc0e8974e09376639aaef0e61ae
9c1dd67562324157ceab4d8e050c84150afc6ddff6aec72206ab437c31aac7bb
d99f687b6e744e9d9bdff2e59c273c85deff48dbaa52bf2d64009fd5ec4907ab
ae72b0b7e4c361d0016ed97ac0664e0c8f3d31dd9627c993b635b5fac24d7255
2c5f8cf6008b32d8845093b44852f6fbd1c2be8ec1ae5fa4e01e8d81d7e42929
5f54f1bec9ba28b84b92478b3db46235c07fa7b4fb106111dd68e4af94afcea3
7a9e36961ab5b2ab759ec2196d40618b1f43c5a04c40c01b31cfb4ea1adfc347
c51201337af75df4850b5392117e54eedfa2f1ac133e891947ece8102cdda0d0
b2a1e0e508be9c7546a8af45c72f2032f067ac036f03ec0c8309b368b195a65c
0ffd61040c88e3beb1cd998b777cbbe118f52daa4eb2759cd9329de5d7f2adc4
769cba836f991b58e8f70ebecb20c4e34fc5e1d1fc7c031b8fc704f43676d83a
21b895bddca92e3443bf32f96d3c2c740be863944ed1c78a41a7caf36ea8f2a7
SH256 hash:
c59a72e874640d2d2c5669edc14fdeb82a72cbacde61679907d2926b8ed79d08
MD5 hash:
b37fc99b846edbde0d0f36bee1760849
SHA1 hash:
0016396b048dcbda5b87742c32678f706db6362c
Link:
https://www.unpac.me/results/09056a75-e2ea-46c6-9805-ff64ca3d0c5c/
SH256 hash:
79b1315cab839553008486cf182981ce0a36c1755a83e37f7b107cdb7266f0cb
MD5 hash:
0e9e305e1e69c435383eb73f66c63530
SHA1 hash:
9d5eb75968bfe5a1e12af2d81f8b20322c77f2ec
Link:
https://www.unpac.me/results/09056a75-e2ea-46c6-9805-ff64ca3d0c5c/
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/79b1315cab83/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/79b1315cab839553008486cf182981ce0a36c1755a83e37f7b107cdb7266f0cb

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:Detect_PowerShell_Obfuscation
Create hunting rule
Author:daniyyell
Description:Detects obfuscated PowerShell commands commonly used in malicious scripts.
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: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 79b1315cab839553008486cf182981ce0a36c1755a83e37f7b107cdb7266f0cb

(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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