MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a54c57d081e28c09d26a5ef8d3b471af22e6b4ab2f65b1a89bb2a79c23872135. 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 15 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a54c57d081e28c09d26a5ef8d3b471af22e6b4ab2f65b1a89bb2a79c23872135
SHA3-384 hash: 390162ec869f18faf1c224defe157261d0e2f1ddfc41a7c04204b948e513f17a339a2a006d2d91279fa55bbb4c2ca15c
SHA1 hash: 3c4d16233938c9dff42d9996a869377b6b24e91a
MD5 hash: 090ff5be96e85eb18ecc96acc93dc763
humanhash: mexico-oregon-mexico-ohio
File name:PI-ZY202307050010 ,xls.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:658'438 bytes
First seen:2023-07-18 12:43:49 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 61259b55b8912888e90f516ca08dc514 (1'059 x Formbook, 741 x AgentTesla, 427 x GuLoader)
ssdeep 12288:AYHiv/h2rvsV6wYjvP7he1hFWFYpdU4YQTCGCPmMTcDq0WS/s7bq:AYHiv/h2rvsV6wYjXwGY03QTtCVTc2q3
Threatray 601 similar samples on MalwareBazaar
TLSH T1A9E4E00C1A4B8C19ECA6373D03765639ADE7FD14746B623A83C9FB1FB6B628139C5046
TrID 47.3% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13)
15.9% (.EXE) Win64 Executable (generic) (10523/12/4)
9.9% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
7.6% (.EXE) Win16 NE executable (generic) (5038/12/1)
6.8% (.EXE) Win32 Executable (generic) (4505/5/1)
File icon (PE):PE icon
dhash icon c6cedececed6f164 (1 x RemcosRAT, 1 x AgentTesla)
Reporter abuse_ch
Tags:exe RAT RemcosRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
285
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
remcos
Create hunting rule
ID:
1
File name:
PI-ZY202307050010 ,xls.exe
Verdict:
Malicious activity
Analysis date:
2023-07-18 12:50:05 UTC
Tags:
rat remcos remote
Link:
https://app.any.run/tasks/3a665b3f-5cc4-410c-b7df-59e2623f1354

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/423461/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file in the %temp% directory
Creating a window
Creating a file
Creating a file in the %AppData% subdirectories
Unauthorized injection to a recently created process
Restart of the analyzed sample
Сreating synchronization primitives
Setting a keyboard event handler
Sending a custom TCP request
DNS request
Sending an HTTP GET request
Reading critical registry keys
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Stealing user critical data
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
control lolbin overlay packed remcos shell32
Link:
https://www.filescan.io/uploads/64b689152ad0f7418d6a11ff/reports/1b3d1751-4528-40f4-95a2-95bdcb51a340/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/a54c57d081e28c09d26a5ef8d3b471af22e6b4ab2f65b1a89bb2a79c23872135
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/0d646d11-9da1-4b3c-9222-7a9eed122019
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
phis.troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1275092
Signature
C2 URLs / IPs found in malware configuration
Contains functionality to bypass UAC (CMSTPLUA)
Contains functionality to inject code into remote processes
Contains functionality to modify clipboard data
Contains functionality to steal Chrome passwords or cookies
Contains functionality to steal Firefox passwords or cookies
Delayed program exit found
Detected unpacking (changes PE section rights)
Detected unpacking (overwrites its own PE header)
Found API chain indicative of debugger detection
Found evasive API chain (may stop execution after reading information in the PEB, e.g. number of processors)
Found malware configuration
Installs a global keyboard hook
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
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)
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: 1275092 Sample: PI-ZY202307050010_,xls.exe Startdate: 18/07/2023 Architecture: WINDOWS Score: 100 46 Found malware configuration 2->46 48 Malicious sample detected (through community Yara rule) 2->48 50 Multi AV Scanner detection for submitted file 2->50 52 5 other signatures 2->52 7 PI-ZY202307050010_,xls.exe 1 20 2->7         started        11 rnwsclhqafa.exe 18 2->11         started        process3 file4 30 C:\Users\user\AppData\...\rnwsclhqafa.exe, PE32 7->30 dropped 32 C:\Users\user\AppData\Local\...\jiumcmmc.dll, PE32 7->32 dropped 60 Contains functionality to bypass UAC (CMSTPLUA) 7->60 62 Detected unpacking (changes PE section rights) 7->62 64 Detected unpacking (overwrites its own PE header) 7->64 70 7 other signatures 7->70 13 PI-ZY202307050010_,xls.exe 3 16 7->13         started        34 C:\Users\user\AppData\Local\...\jiumcmmc.dll, PE32 11->34 dropped 66 Multi AV Scanner detection for dropped file 11->66 68 Maps a DLL or memory area into another process 11->68 18 rnwsclhqafa.exe 11->18         started        signatures5 process6 dnsIp7 40 127.0.0.1 unknown unknown 13->40 42 2.59.255.57, 49699, 49700, 55433 CMCSUS Germany 13->42 44 geoplugin.net 178.237.33.50, 49701, 80 ATOM86-ASATOM86NL Netherlands 13->44 36 C:\ProgramData\remcos\logs.dat, data 13->36 dropped 72 Maps a DLL or memory area into another process 13->72 74 Installs a global keyboard hook 13->74 20 PI-ZY202307050010_,xls.exe 1 13->20         started        23 PI-ZY202307050010_,xls.exe 1 13->23         started        25 PI-ZY202307050010_,xls.exe 1 13->25         started        27 9 other processes 13->27 file8 signatures9 process10 dnsIp11 54 Tries to steal Instant Messenger accounts or passwords 20->54 56 Tries to steal Mail credentials (via file / registry access) 20->56 38 192.168.2.1 unknown unknown 27->38 58 Tries to harvest and steal browser information (history, passwords, etc) 27->58 signatures12
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/a54c57d081e28c09d26a5ef8d3b471af22e6b4ab2f65b1a89bb2a79c23872135/
Threat name:
Win32.Trojan.Nemesis
Create hunting rule
Status:
Malicious
First seen:
2023-07-18 12:44:07 UTC
File Type:
PE (Exe)
Extracted files:
3
AV detection:
19 of 25 (76.00%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=uvgfpueb4kgatutkl34nhndrv4ronnflf5s3dke3wktzyi4hee2q._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
0f611b87697a816d5b37f745fa94c89315327ba3458c190fe41efd891ccd5196
RemcosRAT
1297278ef746096841eeadfbd09a124e044a52bee1be093b4484f95af475c2b3
RemcosRAT
4b66b1c337c83ccb79e4862a7a32421fd75a565a59fee1f830d4aae55b64af9a
RemcosRAT
4eaf10beee3ffe3dff4d6bd78c7a8f04c7a1b067c1f7cb6d414a53d56b1dee8e
RemcosRAT
648cf8b93fa2f02344ef0ab1684a0e6cfb45b61a21f79890c5183e8068f6a1fa
RemcosRAT
7e9ed4d997f5a2c2d35cb8c49f66625eb37d3711906dc39dfc6e34319ad3a2cc
RemcosRAT
9483e96760c36e3321a8ccba6968aa4c1707f0cf91fd48fbb7d8afca6006e91e
RemcosRAT
979b67124f30f347688897010f34abf0467a67516ba011c9601cf06a14be0432
RemcosRAT
d5a1b80f534871efd0a4f5d8f2dd169e8e35751ef0416dcd4af929daa82e5687
RemcosRAT
+ 591 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:remotehost collection persistence rat spyware stealer
Link:
https://tria.ge/reports/230718-pygrlaba6v/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Accesses Microsoft Outlook accounts
Adds Run key to start application
Loads dropped DLL
Reads user/profile data of web browsers
NirSoft MailPassView
NirSoft WebBrowserPassView
Nirsoft
Remcos
Malware Config
C2 Extraction:
127.0.0.1:55434
127.0.0.1:55433
2.59.255.57:55433
2.59.255.57:55434
Unpacked files
SH256 hash:
78975004fbe6349c4103f86ecc868d59862cb82d5a6038825fce5ece50c24bd5
MD5 hash:
b49886b2e7682aea967053bd5d7b11de
SHA1 hash:
8e8d755403752a25fd44b51665bcfc26a97af88b
Link:
https://www.unpac.me/results/229c35e1-cec5-4020-b08b-f303e02be409/
SH256 hash:
cf0b636832dd36d2739b56b8371904c3ec23fbabc8d21fc6beae7a9e02ce3747
MD5 hash:
7e5f83a153172d0479607d6900cd6b17
SHA1 hash:
0f15a93fc03568fa405d52e3af7dc2f3091744b0
Detections:
Remcos
Create hunting rule
win_remcos_auto
Create hunting rule
Link:
https://www.unpac.me/results/229c35e1-cec5-4020-b08b-f303e02be409/
Parent samples :
f82c643baf10986a8ad197d2565b7a093aa1eef8b9d4463f4a42d3cc81a45b8f
a54c57d081e28c09d26a5ef8d3b471af22e6b4ab2f65b1a89bb2a79c23872135
SH256 hash:
a54c57d081e28c09d26a5ef8d3b471af22e6b4ab2f65b1a89bb2a79c23872135
MD5 hash:
090ff5be96e85eb18ecc96acc93dc763
SHA1 hash:
3c4d16233938c9dff42d9996a869377b6b24e91a
Link:
https://www.unpac.me/results/229c35e1-cec5-4020-b08b-f303e02be409/
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/a54c57d081e2/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/a54c57d081e28c09d26a5ef8d3b471af22e6b4ab2f65b1a89bb2a79c23872135

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:iexplorer_remcos
Create hunting rule
Author:iam-py-test
Description:Detect iexplorer being taken over by Remcos
Rule name:INDICATOR_EXE_Packed_MPress
Create hunting rule
Author:ditekSHen
Description:Detects executables built or packed with MPress PE compressor
Rule name:INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store
Create hunting rule
Author:ditekSHen
Description:Detects executables referencing many confidential data stores found in browsers, mail clients, cryptocurreny wallets, etc. Observed in information stealers
Rule name:INDICATOR_SUSPICIOUS_EXE_References_Messaging_Clients
Create hunting rule
Author:ditekSHen
Description:Detects executables referencing many email and collaboration clients. Observed in information stealers
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:meth_get_eip
Create hunting rule
Author:Willi Ballenthin
Rule name:meth_stackstrings
Create hunting rule
Author:Willi Ballenthin
Rule name:QbotStuff
Create hunting rule
Author:anonymous
Rule name:Remcos
Create hunting rule
Author:kevoreilly
Description:Remcos Payload
Rule name:REMCOS_RAT_variants
Create hunting rule
Rule name:shellcode
Create hunting rule
Author:nex
Description:Matched shellcode byte patterns
Rule name:TeslaCryptPackedMalware
Create hunting rule
Rule name:Windows_Trojan_Remcos_b296e965
Create hunting rule
Author:Elastic Security
Rule name:win_remcos_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:Detects win.remcos.
Rule name:yara_template
Create hunting rule

File information

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

Malspam

RemcosRAT

Executable exe a54c57d081e28c09d26a5ef8d3b471af22e6b4ab2f65b1a89bb2a79c23872135

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/423461/

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