MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b9b1a3245f7aa2f9fadc4cff8343866030a63f297167df00ca0aa4284f453be1. 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: 12


Intelligence 12 IOCs YARA 9 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b9b1a3245f7aa2f9fadc4cff8343866030a63f297167df00ca0aa4284f453be1
SHA3-384 hash: 30cfae9dcdaa8125aac17b93069bc39c859c1c22aa1a2033a16b07a7f83abd0332fb9bb9721aeda84825ecb4497422a0
SHA1 hash: c61eaa832970de9010b1734a9900e84da94b0dcf
MD5 hash: f50129eee93c12e6dea7ad917f85d7b1
humanhash: washington-princess-floor-nineteen
File name:IMG-433665587656789565467654-9875.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:644'587 bytes
First seen:2021-07-26 13:07:43 UTC
Last seen:2021-07-26 13:51:03 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash d4cc1601fd324eebfdf856765dda2bd4 (3 x Formbook, 1 x SnakeKeylogger, 1 x RemcosRAT)
ssdeep 12288:6fZLDGoTfMLiJKG1Sdy/gPEPxsnhu6avKTj83HcvNNXz9S:qXvJKG16y/Rx4yQj8XcvNNXz9S
Threatray 3'998 similar samples on MalwareBazaar
TLSH T1F5D4F16435D1D4B2C43B243019E4CAF5296EBE731E70988FD747776BAA309A2913868F
Reporter lowmal3
Tags:exe RemcosRAT

Intelligence

File Origin
# of uploads :
2
# of downloads :
155
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
IMG-433665587656789565467654-9875.exe
Verdict:
Malicious activity
Analysis date:
2021-07-26 13:29:21 UTC
Tags:
rat remcos trojan formbook stealer
Link:
https://app.any.run/tasks/e57aa48e-4687-4869-8171-e9654851faa5

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/174128/
Detection(s):
SecuriteInfo.com.W32.AIDetect.malware1.30400.16577.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Unauthorized injection to a recently created process
Creating a file
DNS request
Creating a window
Connection attempt
Sending a UDP request
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:
Formbook
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/26a38222-696f-4b77-9e40-43271f114e7d
Result
Threat name:
Remcos FormBook
Create hunting rule
Detection:
malicious
Classification:
phis.troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/821786
Signature
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Contains functionality to inject code into remote processes
Contains functionality to steal Chrome passwords or cookies
Contains functionality to steal Firefox passwords or cookies
Delayed program exit found
Detected Remcos RAT
Detected unpacking (changes PE section rights)
Detected unpacking (overwrites its own PE header)
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)
Maps a DLL or memory area into another process
Modifies the context of a thread in another process (thread injection)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Sigma detected: Suspicious Svchost Process
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
System process connects to network (likely due to code injection or exploit)
Tries to detect virtualization through RDTSC time measurements
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 access)
Uses dynamic DNS services
Yara detected FormBook
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 454199 Sample: IMG-43366558765678956546765... Startdate: 26/07/2021 Architecture: WINDOWS Score: 100 51 www.liusco.com 2->51 53 www.fisherstransmission.com 2->53 85 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->85 87 Malicious sample detected (through community Yara rule) 2->87 89 Antivirus / Scanner detection for submitted sample 2->89 91 7 other signatures 2->91 10 IMG-433665587656789565467654-9875.exe 2->10         started        signatures3 process4 signatures5 93 Detected unpacking (changes PE section rights) 10->93 95 Detected unpacking (overwrites its own PE header) 10->95 97 Contains functionality to steal Chrome passwords or cookies 10->97 99 4 other signatures 10->99 13 IMG-433665587656789565467654-9875.exe 2 5 10->13         started        process6 dnsIp7 63 ramzy.duckdns.org 23.105.131.220, 2005, 49708, 49711 LEASEWEB-USA-NYC-11US United States 13->63 45 C:\Users\user\AppData\Roaming\uwn.exe, PE32 13->45 dropped 47 C:\Users\user\AppData\Roaming\uwin.exe, PE32 13->47 dropped 49 C:\Users\user\AppData\Roaming\dwn.exe, PE32 13->49 dropped 109 Injects a PE file into a foreign processes 13->109 18 dwn.exe 13->18         started        21 uwn.exe 13->21         started        23 uwin.exe 13->23         started        25 7 other processes 13->25 file8 signatures9 process10 dnsIp11 65 Antivirus detection for dropped file 18->65 67 Multi AV Scanner detection for dropped file 18->67 69 Detected unpacking (changes PE section rights) 18->69 71 Tries to detect virtualization through RDTSC time measurements 18->71 28 dwn.exe 18->28         started        73 Detected unpacking (overwrites its own PE header) 21->73 75 Machine Learning detection for dropped file 21->75 77 Maps a DLL or memory area into another process 21->77 31 uwn.exe 21->31         started        55 192.168.2.1 unknown unknown 25->55 79 Tries to steal Instant Messenger accounts or passwords 25->79 81 Tries to steal Mail credentials (via file access) 25->81 83 Tries to harvest and steal browser information (history, passwords, etc) 25->83 33 WerFault.exe 23 9 25->33         started        35 IMG-433665587656789565467654-9875.exe 25->35         started        37 svchost.exe 25->37         started        39 WerFault.exe 25->39         started        signatures12 process13 signatures14 103 Modifies the context of a thread in another process (thread injection) 28->103 105 Maps a DLL or memory area into another process 28->105 107 Queues an APC in another process (thread injection) 28->107 41 explorer.exe 28->41 injected process15 dnsIp16 57 bspceducation.com 95.217.203.187, 49745, 80 HETZNER-ASDE Germany 41->57 59 xn--infus-fsa.com 34.102.136.180, 49743, 49744, 80 GOOGLEUS United States 41->59 61 6 other IPs or domains 41->61 101 System process connects to network (likely due to code injection or exploit) 41->101 signatures17
Gathering data
Threat name:
Win32.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2021-07-26 13:08:07 UTC
AV detection:
20 of 28 (71.43%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=xgy2gjc7pkrpt6w4jt7ygq4gmaykmpzjoft56agkbkscqt2fhpqq._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
formbook
Create hunting rule
Similar samples:
134427c58b0e1acd504b9f8980bfa29a808a27216adb1999e8dbc4a3fe2b0031
RemcosRAT
3d263b6e2cdc6e43060faf06203a211ed5f716238157fc36f3f0d5b21777c0ac
RemcosRAT
522735989689a96d0e10e926aae941e58a695062254573c5796bb129e4c7703e
RemcosRAT
5f06da67169389577ec237bfb0c3e0e9203833048f48081deed7b6201ad18c27
RemcosRAT
6147decc439b9d258f5b19f77dfa47ea441e681c49e0b699533eea18104f4092
RemcosRAT
995f29caf80a4902430611c45e0619adbcd60e3a9f283a562fce6bd7baebc075
RemcosRAT
a465bb35f4e7bafb2fea17156c39daee286e49c3f10463ecb8d29766e2d0b200
RemcosRAT
ba4b51ae64c68b32d126322b51b41dce7c300c01faed97aca35ff142e121a914
RemcosRAT
c6e5156c311412210237810450648947699d1c4862536a4e86b778e899627292
RemcosRAT
cbe42b277b9e2d8ad915917a6c9a6cca9858efb70c342462a0a6701b39dda1fc
RemcosRAT
+ 3'988 additional samples on MalwareBazaar
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:remcos family:xloader botnet:remotehost loader rat spyware stealer suricata
Link:
https://tria.ge/reports/210726-3lsfpp5qxe/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Program crash
Suspicious use of SetThreadContext
Reads user/profile data of web browsers
Executes dropped EXE
NirSoft MailPassView
NirSoft WebBrowserPassView
Nirsoft
Xloader Payload
Remcos
Xloader
suricata: ET MALWARE FormBook CnC Checkin (GET)
Malware Config
C2 Extraction:
ramzy.duckdns.org:2005
http://www.northriverlawns.com/q3t0/
Unpacked files
SH256 hash:
350046a5ceed451970c9a23a5e2e2e8ee86545306ef9bf624feddc585a686f46
MD5 hash:
30f6e4441ef32a8b927cc2adaba3640d
SHA1 hash:
c9215f2ee3255bd6157cd31e15c37e4737c66af1
Detections:
win_remcos_g0
Create hunting rule
Link:
https://www.unpac.me/results/f9ee01e7-0c23-47cc-8907-5962758f864f/
SH256 hash:
b9b1a3245f7aa2f9fadc4cff8343866030a63f297167df00ca0aa4284f453be1
MD5 hash:
f50129eee93c12e6dea7ad917f85d7b1
SHA1 hash:
c61eaa832970de9010b1734a9900e84da94b0dcf
Link:
https://www.unpac.me/results/f9ee01e7-0c23-47cc-8907-5962758f864f/
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/b9b1a3245f7aa2f9fadc4cff8343866030a63f297167df00ca0aa4284f453be1

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:ach_RemcosRAT
Create hunting rule
Author:abuse.ch
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_Referenfces_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_EventViewer
Create hunting rule
Author:ditekSHen
Description:detects Windows exceutables potentially bypassing UAC using eventvwr.exe
Rule name:INDICATOR_SUSPICIOUS_Stomped_PECompilation_Timestamp_InTheFuture
Create hunting rule
Author:ditekSHen
Description:Detect executables with stomped PE compilation timestamp that is greater than local current time
Rule name:Remcos
Create hunting rule
Author:kevoreilly
Description:Remcos Payload
Rule name:remcos_rat
Create hunting rule
Author:jeFF0Falltrades
Rule name:REMCOS_RAT_variants
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 b9b1a3245f7aa2f9fadc4cff8343866030a63f297167df00ca0aa4284f453be1

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/174128/

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