MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 138c7f0a55344e824bfd3cba1ddae87b237500005fd09a22cbde021ec017454f. 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


GurcuStealer


Vendor detections: 12


Intelligence 12 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 138c7f0a55344e824bfd3cba1ddae87b237500005fd09a22cbde021ec017454f
SHA3-384 hash: d349f698cc87ca6c18d5a0a4b68e2eb1d060113ed620856944a9828e2d833bb29cc3b517a715e46187f9212ba8c2b10c
SHA1 hash: e9999c73e07daf9ba223fbf796d56ae762b748fa
MD5 hash: 9086ff963ae98510ea0eb9abad045939
humanhash: five-indigo-idaho-steak
File name:9086ff963ae98510ea0eb9abad045939.exe
Download: download sample
Signature GurcuStealer
Create hunting rule
File size:5'694'976 bytes
First seen:2023-03-22 16:04:41 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'647 x AgentTesla, 19'450 x Formbook, 12'201 x SnakeKeylogger)
ssdeep 49152:lwjD4OTpsVac5KCLTK2smzw54y4Hxx/MsjKMm:MsVq3d43/MsjKMm
Threatray 979 similar samples on MalwareBazaar
TLSH T1DA46CC08A7D4ADC7E1FC8736DA0246547A27FA143FC3D7BBA4A817A6978635D8FC1090
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:exe GurcuStealer

Intelligence

File Origin
# of uploads :
1
# of downloads :
258
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
redline
Create hunting rule
ID:
1
File name:
file
Verdict:
Malicious activity
Analysis date:
2023-03-21 13:31:42 UTC
Tags:
rat redline trojan amadey loader
Link:
https://app.any.run/tasks/f277fae8-8bbc-4ceb-9699-9d076a6af0f8

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/376537/
Detection(s):
Win.Trojan.NanoCore-9993885-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Unauthorized injection to a recently created process
Creating a file
Сreating synchronization primitives
Creating a file in the %temp% directory
Reading critical registry keys
Creating a window
DNS request
Sending an HTTP GET request
Sending a custom TCP request
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Stealing user critical data
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
nanocore packed packed
Link:
https://www.filescan.io/uploads/641b273300d9b27ec1312aec/reports/d4250041-3496-4b6a-8e94-65e5e4b978f8/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/138c7f0a55344e824bfd3cba1ddae87b237500005fd09a22cbde021ec017454f
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:
WhiteSnake
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/0c44e242-ed43-4872-8245-e245a93143d6
Result
Threat name:
Gurcu Stealer
Create hunting rule
Detection:
malicious
Classification:
troj.spyw
Score:
84 / 100
Link:
https://www.joesandbox.com/analysis/1199585
Signature
Found many strings related to Crypto-Wallets (likely being stolen)
Machine Learning detection for sample
May check the online IP address of the machine
Multi AV Scanner detection for submitted file
Self deletion via cmd or bat file
Tries to harvest and steal browser information (history, passwords, etc)
Uses ping.exe to check the status of other devices and networks
Uses the Telegram API (likely for C&C communication)
Yara detected Gurcu Stealer
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 832497 Sample: DIE5K18SdF.exe Startdate: 22/03/2023 Architecture: WINDOWS Score: 84 46 Multi AV Scanner detection for submitted file 2->46 48 Yara detected Gurcu Stealer 2->48 50 Machine Learning detection for sample 2->50 52 2 other signatures 2->52 8 DIE5K18SdF.exe 1 1 2->8         started        12 DIE5K18SdF.exe 2->12         started        14 DIE5K18SdF.exe 2->14         started        process3 file4 34 C:\Users\user\AppData\...\DIE5K18SdF.exe.log, ASCII 8->34 dropped 56 May check the online IP address of the machine 8->56 58 Self deletion via cmd or bat file 8->58 16 DIE5K18SdF.exe 16 3 8->16         started        20 DIE5K18SdF.exe 2 12->20         started        22 DIE5K18SdF.exe 2 14->22         started        signatures5 process6 dnsIp7 36 ip-api.com 208.95.112.1, 49683, 80 TUT-ASUS United States 16->36 38 api.telegram.org 149.154.167.220, 443, 49684 TELEGRAMRU United Kingdom 16->38 42 Self deletion via cmd or bat file 16->42 44 Tries to harvest and steal browser information (history, passwords, etc) 16->44 24 cmd.exe 1 16->24         started        signatures8 process9 signatures10 54 Uses ping.exe to check the status of other devices and networks 24->54 27 PING.EXE 1 24->27         started        30 conhost.exe 24->30         started        32 chcp.com 1 24->32         started        process11 dnsIp12 40 127.0.0.1 unknown unknown 27->40
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/138c7f0a55344e824bfd3cba1ddae87b237500005fd09a22cbde021ec017454f/
Threat name:
Win32.Trojan.Generic
Create hunting rule
Status:
Suspicious
First seen:
2023-03-21 17:42:00 UTC
File Type:
PE (.Net Exe)
Extracted files:
29
AV detection:
20 of 24 (83.33%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=cogh6csvgrhies75hs5b3wxipmrxkaaal7ijuiwl3ybb5qaxivhq._file
Verdict:
malicious
Similar samples:
1c110f50ab897a5f06dee641a8827439ed33abd81db410831bba0fbff86a6518
GurcuStealer
6cca9fef66cc8fdb27871f8fb01e870734343c5c3fa480f5518d5d02e90afd42
GurcuStealer
7a367543fbd9fb936375545586cc64932719c762236982287b9de09b489f1faa
GurcuStealer
831d268e5c6d79d8fe79b60432556fca95666e74895af79c8bb55bab729bbfc7
GurcuStealer
e3ed9ecec6769ab3d69b37f8b7f95e0ae67c02d8fb97ca041423023fd0fb4add
GurcuStealer
eb94527ba952e836d008c8aff750d72e39172a3f810eac7f00af5c613a29da20
GurcuStealer
ef9609169903222818592b43043f38b4ad40190c5bc400b7e0af96a90b085c3c
GurcuStealer
+ 969 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  7/10
Tags:
persistence
Link:
https://tria.ge/reports/230322-tjh4bsbg3s/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Adds Run key to start application
.NET Reactor proctector
Unpacked files
SH256 hash:
e5843132a44c6ff6c296f9c203e44c903bf5027097a5f645217141d5ced3855c
MD5 hash:
85aaf0bc66b30f357b6479a0d3947054
SHA1 hash:
1a98567041cc2491f588b063412fd605f887a15b
Link:
https://www.unpac.me/results/aa6bc363-bf2f-4ac5-834a-3cc7472331eb/
SH256 hash:
2c27c3cc157d7074938157b8caefe5a142ca49163c24cf12dc9280fd75018c31
MD5 hash:
6a5fe5a926d76e9cede5ecf86345a4fa
SHA1 hash:
05eb3e0d4149d0dd3b86d112842f0cf4832eb88f
Link:
https://www.unpac.me/results/aa6bc363-bf2f-4ac5-834a-3cc7472331eb/
SH256 hash:
138c7f0a55344e824bfd3cba1ddae87b237500005fd09a22cbde021ec017454f
MD5 hash:
9086ff963ae98510ea0eb9abad045939
SHA1 hash:
e9999c73e07daf9ba223fbf796d56ae762b748fa
Link:
https://www.unpac.me/results/aa6bc363-bf2f-4ac5-834a-3cc7472331eb/
Please note that we are no longer able to provide a coverage score for Virus Total.

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:BitcoinAddress
Create hunting rule
Author:Didier Stevens (@DidierStevens)
Description:Contains a valid Bitcoin address
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

GurcuStealer

Executable exe 138c7f0a55344e824bfd3cba1ddae87b237500005fd09a22cbde021ec017454f

(this sample)

Cape
Cape
https://www.capesandbox.com/analysis/376537/
  
URLhaus
https://urlhaus.abuse.ch/url/2581102/
  
Delivery method
Distributed via web download

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