MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a87ba1ea4d91b34a5bd332e96b2b69d1a850ce0510247429673bb72fc4f8f304. 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


DCRat


Vendor detections: 14


Intelligence 14 IOCs YARA 6 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a87ba1ea4d91b34a5bd332e96b2b69d1a850ce0510247429673bb72fc4f8f304
SHA3-384 hash: b10e9e4154c16e314bb110cdd6f8a00ee66a3a7585f91bc5ad4a45813dda356eeda945b619d7082622f887845978852d
SHA1 hash: b43db706c301f3c1acfe8f51c9364e524fd61aa5
MD5 hash: 237c473b91af5dd9556c64012ecfc391
humanhash: rugby-papa-harry-avocado
File name:237c473b91af5dd9556c64012ecfc391.exe
Download: download sample
Signature DCRat
Create hunting rule
File size:3'708'928 bytes
First seen:2024-05-02 17:20:14 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'666 x AgentTesla, 19'479 x Formbook, 12'209 x SnakeKeylogger)
ssdeep 98304:IUnOeq/u5u5fbHFWNAyEtSJDghmoWGd8Z6:IAub4N62D6JDd06
TLSH T1C806AFD984718D37E7A42A37949E80CD43F7C511682FAE5F7B8942C4BE9313796838B2
TrID 60.4% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.8% (.SCR) Windows screen saver (13097/50/3)
8.7% (.EXE) Win64 Executable (generic) (10523/12/4)
5.4% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.1% (.EXE) Win16 NE executable (generic) (5038/12/1)
Reporter abuse_ch
Tags:DCRat exe


Avatar
abuse_ch
DCRat C2:
http://45.141.102.40/dbBaseFlowerdatalife.php

Intelligence

File Origin
# of uploads :
1
# of downloads :
358
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
dcrat
Create hunting rule
ID:
1
File name:
a87ba1ea4d91b34a5bd332e96b2b69d1a850ce0510247429673bb72fc4f8f304.exe
Verdict:
Malicious activity
Analysis date:
2024-05-02 17:23:28 UTC
Tags:
rat backdoor dcrat remote stealer exfiltration
Link:
https://app.any.run/tasks/7263e7af-e82c-4570-aa79-47d1588b284b

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
Sanesecurity.Malware.30425.UnRegNetReactor.UNOFFICIAL
Create hunting rule

Win.Packed.Uztuby-10009381-0
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Win.Packed.Uztuby-10015036-0
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Win.Packed.Uztuby-10015799-0
Create hunting rule

Win.Packed.Uztuby-10015902-0
Create hunting rule

Win.Packed.Uztuby-10017372-0
Create hunting rule

Win.Packed.Zusy-10023527-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Сreating synchronization primitives
Creating a file
Creating a file in the Windows subdirectories
Creating a file in the %temp% directory
Running batch commands
Creating a process with a hidden window
Launching a process
Sending a UDP request
Creating a process from a recently created file
Loading a suspicious library
Using the Windows Management Instrumentation requests
Connection attempt
Sending an HTTP POST request
Creating a window
Searching for synchronization primitives
Unauthorized injection to a recently created process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
net_reactor packed packed
Link:
https://www.filescan.io/uploads/6633cb819cdc03b57abafc7a/reports/f18b5f50-60b4-427f-8116-760c2ff580e9/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/a87ba1ea4d91b34a5bd332e96b2b69d1a850ce0510247429673bb72fc4f8f304
Verdict:
Suspicious
Link:
https://analyze.intezer.com/analyses/9b4d42db-da55-4e14-b169-bcf6c078e800
Result
Threat name:
DCRat, PureLog Stealer, zgRAT
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1435477
Signature
.NET source code contains method to dynamically call methods (often used by packers)
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Drops PE files with benign system names
Machine Learning detection for dropped file
Machine Learning detection for sample
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Queries sensitive Plug and Play Device Information (via WMI, Win32_PnPEntity, often done to detect virtual machines)
Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines)
Sigma detected: Files With System Process Name In Unsuspected Locations
Snort IDS alert for network traffic
Tries to harvest and steal browser information (history, passwords, etc)
Yara detected DCRat
Yara detected PureLog Stealer
Yara detected zgRAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1435477 Sample: caiyyk832l.exe Startdate: 02/05/2024 Architecture: WINDOWS Score: 100 42 Snort IDS alert for network traffic 2->42 44 Antivirus detection for dropped file 2->44 46 Antivirus / Scanner detection for submitted sample 2->46 48 11 other signatures 2->48 7 caiyyk832l.exe 4 43 2->7         started        process3 file4 24 C:\Users\user\Desktop\zWaxhSqy.log, PE32 7->24 dropped 26 C:\Users\user\Desktop\zVnPbPyH.log, PE32 7->26 dropped 28 C:\Users\user\Desktop\yZzpLSbD.log, PE32 7->28 dropped 30 25 other malicious files 7->30 dropped 50 Drops PE files with benign system names 7->50 11 cmd.exe 1 7->11         started        signatures5 process6 process7 13 kVYbkqBimdoyUzuDTOpRLVOfKWrG.exe 14 616 11->13         started        18 w32tm.exe 1 11->18         started        20 conhost.exe 11->20         started        22 chcp.com 1 11->22         started        dnsIp8 40 45.141.102.40, 49712, 49713, 49714 MTW-ASRU Russian Federation 13->40 32 C:\Users\user\Desktop\zuAObNRS.log, PE32 13->32 dropped 34 C:\Users\user\Desktop\xGwGqzVU.log, PE32 13->34 dropped 36 C:\Users\user\Desktop\wJUyUzGZ.log, PE32 13->36 dropped 38 19 other malicious files 13->38 dropped 52 Tries to harvest and steal browser information (history, passwords, etc) 13->52 file9 signatures10
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/a87ba1ea4d91b34a5bd332e96b2b69d1a850ce0510247429673bb72fc4f8f304
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/a87ba1ea4d91b34a5bd332e96b2b69d1a850ce0510247429673bb72fc4f8f304/
Threat name:
ByteCode-MSIL.Trojan.SmokeLoader
Create hunting rule
Status:
Malicious
First seen:
2024-04-29 07:16:47 UTC
File Type:
PE (.Net Exe)
AV detection:
22 of 24 (91.67%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=vb52d2snsgzuuw6tgluwwk3j2gufbtqfcashiklhho3s7rhy6mca._file
Verdict:
malicious
Result
Malware family:
zgrat
Create hunting rule
Score:
  10/10
Tags:
family:zgrat rat spyware stealer
Link:
https://tria.ge/reports/240502-vwzghsfb77/
Behaviour
Modifies registry class
Runs ping.exe
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Drops file in Program Files directory
Drops file in Windows directory
Checks computer location settings
Executes dropped EXE
Reads user/profile data of web browsers
Detect ZGRat V1
ZGRat
Unpacked files
SH256 hash:
2b93377ea087225820a9f8e4f331005a0c600d557242366f06e0c1eae003d669
MD5 hash:
d8bf2a0481c0a17a634d066a711c12e9
SHA1 hash:
7cc01a58831ed109f85b64fe4920278cedf3e38d
Link:
https://www.unpac.me/results/c58384e9-d5d4-409b-a902-e81c669df2b2/
SH256 hash:
98ae797d640847c9bcbd7e006f00d67441f57ded734902718debfe2212be4dfb
MD5 hash:
f92f285952e9c0deddc53d8e2e00208f
SHA1 hash:
2fa9d24f390d61eb239995a71eca051ec17e25a2
Link:
https://www.unpac.me/results/c58384e9-d5d4-409b-a902-e81c669df2b2/
SH256 hash:
a87ba1ea4d91b34a5bd332e96b2b69d1a850ce0510247429673bb72fc4f8f304
MD5 hash:
237c473b91af5dd9556c64012ecfc391
SHA1 hash:
b43db706c301f3c1acfe8f51c9364e524fd61aa5
Detections:
INDICATOR_EXE_Packed_DotNetReactor
Create hunting rule
Link:
https://www.unpac.me/results/c58384e9-d5d4-409b-a902-e81c669df2b2/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
iSpy Keylogger
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/a87ba1ea4d91b34a5bd332e96b2b69d1a850ce0510247429673bb72fc4f8f304

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_DotNetReactor
Create hunting rule
Author:ditekSHen
Description:Detects executables packed with unregistered version of .NET Reactor
Rule name:MD5_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for MD5 constants
Rule name:NET
Create hunting rule
Author:malware-lu
Rule name:pe_imphash
Create hunting rule
Rule name:PureCrypter
Create hunting rule
Author:@bartblaze
Description:Identifies PureCrypter, .NET loader and obfuscator.
Reference:https://malpedia.caad.fkie.fraunhofer.de/details/win.purecrypter
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.

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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