MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a4b167bf02353592347c3bbbd0deeb54cce5178918ca6a1e7bf49bffffa85123. 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: 10


Intelligence 10 IOCs YARA 2 File information Comments 1
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SHA256 hash: a4b167bf02353592347c3bbbd0deeb54cce5178918ca6a1e7bf49bffffa85123
SHA3-384 hash: 0cad4d3998b883b01f18fad22e983a49b9cc7416468ff241fc46fedc031b978288c8a2b1447b559585323d8bc49d5e15
SHA1 hash: fdf8be49b6ebceaf143fd074db15baf8c339e89d
MD5 hash: e3a9c34f3c2d41a8edff46c006bb8bde
humanhash: high-lima-bakerloo-solar
File name:e3a9c34f3c2d41a8edff46c006bb8bde
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:1'414'144 bytes
First seen:2022-12-05 09:46:45 UTC
Last seen:2022-12-05 11:31:41 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 24576:89AV6DrexEHsOzj4j85M1hUQDAxzJX4vxzWm:8966nnsOzj4jGM1aK4FX0W
TLSH T194653A0B12A809EED8738837B7D1C237F3B08E68E5275E75972CFA2C45718257BD1A61
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) (4505/5/1)
2.0% (.ICL) Windows Icons Library (generic) (2059/9)
File icon (PE):PE icon
dhash icon 8ecf8e0e9cc3ebc4 (2 x RemcosRAT, 1 x AgentTesla, 1 x DarkTortilla)
Reporter zbetcheckin
Tags:32 exe RemcosRAT

Intelligence

File Origin
# of uploads :
2
# of downloads :
222
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
e3a9c34f3c2d41a8edff46c006bb8bde
Verdict:
Malicious activity
Analysis date:
2022-12-05 14:18:41 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/6ce98ac5-22b5-43f6-9588-1fd0d8a9ffd2

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/342870/
Detection(s):
SecuriteInfo.com.W32.MSIL_Kryptik.DSR.gen.Eldorado.19366.1322.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Сreating synchronization primitives
DNS request
Sending a custom TCP request
Creating a window
Running batch commands
Launching a process
Creating a file
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
obfuscated packed
Link:
https://www.filescan.io/uploads/638dbe1b9a505ad9423d5f92/reports/336e2284-d281-4ba4-87b3-b4a083cc8214/overview
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:
Malicious Packer
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/44f33cc5-ef28-4f0d-bb5b-0c2de418a206
Result
Threat name:
DarkTortilla, Remcos
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1127886
Signature
.NET source code contains very large array initializations
C2 URLs / IPs found in malware configuration
Creates an undocumented autostart registry key
Hides that the sample has been downloaded from the Internet (zone.identifier)
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
Uses ping.exe to check the status of other devices and networks
Uses ping.exe to sleep
Yara detected DarkTortilla Crypter
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 760609 Sample: Gq3bhnPHhZ.exe Startdate: 05/12/2022 Architecture: WINDOWS Score: 100 44 Malicious sample detected (through community Yara rule) 2->44 46 Multi AV Scanner detection for dropped file 2->46 48 Multi AV Scanner detection for submitted file 2->48 50 6 other signatures 2->50 7 Gq3bhnPHhZ.exe 15 4 2->7         started        process3 dnsIp4 42 www.google.com 142.250.203.100, 443, 49704 GOOGLEUS United States 7->42 32 C:\Users\user\AppData\...behaviorgraphq3bhnPHhZ.exe.log, ASCII 7->32 dropped 54 Hides that the sample has been downloaded from the Internet (zone.identifier) 7->54 12 cmd.exe 1 7->12         started        15 cmd.exe 3 7->15         started        file5 signatures6 process7 file8 56 Uses ping.exe to sleep 12->56 58 Uses ping.exe to check the status of other devices and networks 12->58 18 reg.exe 1 1 12->18         started        21 PING.EXE 1 12->21         started        24 conhost.exe 12->24         started        34 C:\Users\user\AppData\Roaming\...\Miruik.exe, PE32 15->34 dropped 36 C:\Users\user\...\Miruik.exe:Zone.Identifier, ASCII 15->36 dropped 26 conhost.exe 15->26         started        28 PING.EXE 1 15->28         started        30 PING.EXE 1 15->30         started        signatures9 process10 dnsIp11 52 Creates an undocumented autostart registry key 18->52 38 127.0.0.1 unknown unknown 21->38 40 192.168.2.1 unknown unknown 21->40 signatures12
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/a4b167bf02353592347c3bbbd0deeb54cce5178918ca6a1e7bf49bffffa85123/
Threat name:
ByteCode-MSIL.Backdoor.Remcos
Create hunting rule
Status:
Malicious
First seen:
2022-12-05 09:47:20 UTC
File Type:
PE (.Net Exe)
Extracted files:
57
AV detection:
17 of 26 (65.38%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=usywppycgu2zend4ho55bxxlktgokf4jddfguht36sn7775ikerq._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Result
Malware family:
n/a
Score:
  10/10
Tags:
persistence
Link:
https://tria.ge/reports/221205-lr7snacb8z/
Behaviour
Runs ping.exe
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Executes dropped EXE
Modifies WinLogon for persistence
Unpacked files
SH256 hash:
a4b167bf02353592347c3bbbd0deeb54cce5178918ca6a1e7bf49bffffa85123
MD5 hash:
e3a9c34f3c2d41a8edff46c006bb8bde
SHA1 hash:
fdf8be49b6ebceaf143fd074db15baf8c339e89d
Link:
https://www.unpac.me/results/911a0a94-f908-44da-a3b6-7d38a8639745/
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/a4b167bf0235/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.35
Link:
https://yomi.yoroi.company/submissions/a4b167bf02353592347c3bbbd0deeb54cce5178918ca6a1e7bf49bffffa85123

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: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.

Web download

RemcosRAT

Executable exe a4b167bf02353592347c3bbbd0deeb54cce5178918ca6a1e7bf49bffffa85123

(this sample)

  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/2444787/
Cape
Cape
https://www.capesandbox.com/analysis/342870/
  
URLhaus
https://urlhaus.abuse.ch/url/2446781/

Comments


Avatar
zbet commented on 2022-12-05 09:46:47 UTC

url : hxxp://13.38.42.168/46/vbc.exe