MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 8791b0b7f4a499d66dbbc5b41ea20cb13af614bdc62e62392bf041065e9ddb0f. 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: 14


Intelligence 14 IOCs YARA 13 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 8791b0b7f4a499d66dbbc5b41ea20cb13af614bdc62e62392bf041065e9ddb0f
SHA3-384 hash: 45b7d10530b210b0852c1dee05dc0396b7c5b24d4d3536a0fc5c42e3bae2b516bd17c5a3bfe01c668c287f4936fec834
SHA1 hash: a76fd19c68c083f1a0a903699464ccfb2b04f757
MD5 hash: 1093418c094fb284481141f5c33895ac
humanhash: autumn-oranges-summer-minnesota
File name:inquiry data spec 20228494.PDF.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:835'072 bytes
First seen:2022-10-31 21:17:59 UTC
Last seen:2022-10-31 23:24:50 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'666 x AgentTesla, 19'479 x Formbook, 12'209 x SnakeKeylogger)
ssdeep 12288:ah7n68TcSFhmPKndO4koBfDYBJfvKDUpnV19P7ba2hqee4BQ7cpdKOXQfZAEyL:J8ZhmUdO4pDYuDUpnLx7qekCdKhyEyL
Threatray 2'501 similar samples on MalwareBazaar
TLSH T1F30523BB8580F17BDDAF72B5A947413CB7290D987AF1C48D0B9569CA58B6B0C020FED1
TrID 72.5% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.4% (.EXE) Win64 Executable (generic) (10523/12/4)
6.5% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.4% (.EXE) Win32 Executable (generic) (4505/5/1)
2.0% (.EXE) OS/2 Executable (generic) (2029/13)
File icon (PE):PE icon
dhash icon f4f4ac8cacacd4d4 (85 x Heodo, 11 x Formbook, 10 x SnakeKeylogger)
Reporter GovCERT_CH
Tags:exe RemcosRAT

Intelligence

File Origin
# of uploads :
2
# of downloads :
392
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
remcos
Create hunting rule
ID:
1
File name:
inquiry data spec 20228494.PDF.exe
Verdict:
Malicious activity
Analysis date:
2022-10-31 21:19:53 UTC
Tags:
trojan rat remcos keylogger
Link:
https://app.any.run/tasks/494c4b9c-6888-4555-a695-7ec7d840dc40

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/326598/
Detection(s):
SecuriteInfo.com.Trojan.PackedNET.738.27290.8422.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a custom TCP request
Unauthorized injection to a recently created process
Creating a file
Сreating synchronization primitives
Setting a keyboard event handler
DNS request
Sending an HTTP GET request
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/63603b8ea5db8d309cbc1615/reports/2f781b7c-0385-415f-bd31-0dc44f8385f3/overview
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/21dd1439-7ce5-4aeb-a455-1dd3ad06d323
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1102076
Signature
.NET source code contains potential unpacker
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Initial sample is a PE file and has a suspicious name
Installs a global keyboard hook
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for submitted file
Sigma detected: Remcos
Snort IDS alert for network traffic
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Uses an obfuscated file name to hide its real file extension (double extension)
Uses dynamic DNS services
Yara detected AntiVM3
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/8791b0b7f4a499d66dbbc5b41ea20cb13af614bdc62e62392bf041065e9ddb0f/
Threat name:
ByteCode-MSIL.Trojan.Leonem
Create hunting rule
Status:
Malicious
First seen:
2022-10-28 01:20:39 UTC
File Type:
PE (.Net Exe)
Extracted files:
12
AV detection:
28 of 41 (68.29%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=q6i3bn7uusm5m3n3yw2b5iqmwe5pmff5yyxgeojl6baqmxu53mhq._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
04a15b34b627794caf34f7277c8663ea7a75d32576f6484dc85ba2bfcbe39bfd
RemcosRAT
0a6b4d008994bb06574688d817089831fc7404e5e458c38e7a1464d072a8fd7a
RemcosRAT
3e0bcdfffded9aaede7644824841490767cf472e2dafebdc04b090870853d8ac
RemcosRAT
788a6a0d67e10a4235043d0f12cc5841ab77bac0518842aea964e720318f674d
RemcosRAT
a4f1f9124305cce82a6b8c70ccde9b4d646103f5b320bd766ad53fcd5a19ff08
RemcosRAT
ad87f3ad6fb14d2b79d7b7aac1b38bc04fd20757460da0f02cac139408df9969
RemcosRAT
c751eef24ba7492781e43c5034f1175ec098ebc72602e68822fd4c09cac0b9bb
RemcosRAT
da780e7f18a59bf4184769099656b951986ff9915e684a7d9c063f471f4f6876
RemcosRAT
+ 2'491 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:new rem stub rat
Link:
https://tria.ge/reports/221031-z5ldgaeafk/
Behaviour
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Remcos
Malware Config
C2 Extraction:
valvesco.duckdns.org:5050
Unpacked files
SH256 hash:
f71ef0a0b6e6f5d8cffb7b1dc5e40975b36e3dd8b7591ff3e1eded734aba0528
MD5 hash:
cc5ddc2492f73e0bd20653de6fbd3d88
SHA1 hash:
c6bcc210049f092f8d80c6ed19aa0a6922d7cfaa
Link:
https://www.unpac.me/results/9b4be1cd-445e-4c6a-a5b1-5d839bf4a40b/
SH256 hash:
c289ec2f57b341220c33145c8b6474d1011d387ab39dacb7b17d69c359548448
MD5 hash:
bd2adeed00397e7545a539d761458af9
SHA1 hash:
b5a1cbca39c6923308f914accf611771996f7097
Detections:
Remcos
Create hunting rule
win_remcos_auto
Create hunting rule
Link:
https://www.unpac.me/results/9b4be1cd-445e-4c6a-a5b1-5d839bf4a40b/
Parent samples :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 hash:
248a7c4997aacb14ca032daf9668636839f921d0a3403f09a3b0ccfdc948cbf1
MD5 hash:
a7952169b04a2c6a39661aad59e79dcf
SHA1 hash:
88722f1a32c913307c0c6385b04478a79fabd12b
Link:
https://www.unpac.me/results/9b4be1cd-445e-4c6a-a5b1-5d839bf4a40b/
SH256 hash:
cfc16a2dbb933b1b85807d48966e9301b9fc34f4c44e7357713ca88b54bf4ab4
MD5 hash:
aabd0bdc81026ade6c57383f21d5c227
SHA1 hash:
4b26936bb8c03be6d7963184215a5ab594ecb765
Link:
https://www.unpac.me/results/9b4be1cd-445e-4c6a-a5b1-5d839bf4a40b/
SH256 hash:
2aab0831c7ad530f8abc789ad5605c3955230200bb21e87efd4ea93972d09ea5
MD5 hash:
146ce4f63c4b42a40ab575533fbecd18
SHA1 hash:
198cf3582b5befd67fb758cffc2179bd4e235795
Link:
https://www.unpac.me/results/9b4be1cd-445e-4c6a-a5b1-5d839bf4a40b/
SH256 hash:
8791b0b7f4a499d66dbbc5b41ea20cb13af614bdc62e62392bf041065e9ddb0f
MD5 hash:
1093418c094fb284481141f5c33895ac
SHA1 hash:
a76fd19c68c083f1a0a903699464ccfb2b04f757
Link:
https://www.unpac.me/results/9b4be1cd-445e-4c6a-a5b1-5d839bf4a40b/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/8791b0b7f4a4/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.61
Link:
https://yomi.yoroi.company/submissions/8791b0b7f4a499d66dbbc5b41ea20cb13af614bdc62e62392bf041065e9ddb0f

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: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_EventViewer
Create hunting rule
Author:ditekSHen
Description:detects Windows exceutables potentially bypassing UAC using eventvwr.exe
Rule name:meth_get_eip
Create hunting rule
Author:Willi Ballenthin
Rule name:meth_stackstrings
Create hunting rule
Author:Willi Ballenthin
Rule name:pe_imphash
Create hunting rule
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:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
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.

File information

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

Malspam

RemcosRAT

Executable exe 8791b0b7f4a499d66dbbc5b41ea20cb13af614bdc62e62392bf041065e9ddb0f

(this sample)

  
Dropped by
RemcosRAT
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/326598/

Comments