MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f91550582e9e831cba0a8ee62a9a47b3f9a4f1f24e228353d6f5050bc1b52509. 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


BluStealer


Vendor detections: 13


Intelligence 13 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: f91550582e9e831cba0a8ee62a9a47b3f9a4f1f24e228353d6f5050bc1b52509
SHA3-384 hash: e7d5c41b40f01cfa9e79c55f34826824263e0e522d1dd71202d3ef828f47f36acccc6e4c61956e41b02578a503339d28
SHA1 hash: e7c20cf1cb49c948dd29bc02613958a249e349b2
MD5 hash: 196ea9c9b65880978d9a087b578d3219
humanhash: snake-nineteen-twelve-lake
File name:Purchase Order.exe
Download: download sample
Signature BluStealer
Create hunting rule
File size:1'450'496 bytes
First seen:2023-04-12 12:52:28 UTC
Last seen:2023-04-21 13:54:28 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:B1OdE7222Bng3pk8C98Vfmx7mqArDATW/IfKbray5+mdcBLX9aGL:BMO72VBg3p/hVf0CqgCWARy5+sWX
Threatray 13 similar samples on MalwareBazaar
TLSH T1E265237522D5E79EDC506BBE5A05988817F688B8C0D8CD5DC5B774EB0EBC3318048EAE
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)
Reporter abuse_ch
Tags:BluStealer exe

Intelligence

File Origin
# of uploads :
2
# of downloads :
255
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Purchase Order.exe
Verdict:
Malicious activity
Analysis date:
2023-04-12 13:01:22 UTC
Tags:
stealer
Link:
https://app.any.run/tasks/a34aef1e-9bf2-4372-b2a6-93bb29514641

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
A310Logger
Create hunting rule
Link:
https://www.capesandbox.com/analysis/381799/
Detection(s):
SecuriteInfo.com.MSIL.Kryptik.WZA.UNOFFICIAL
Create hunting rule

Sanesecurity.Malware.28872.BadIN4.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Unauthorized injection to a recently created process
Creating a file
Сreating synchronization primitives
Creating a file in the %AppData% directory
Modifying an executable file
Launching a service
Searching for synchronization primitives
Modifying a system executable file
Creating a file in the Windows subdirectories
Launching a process
Loading a system driver
Enabling autorun for a service
Query of malicious DNS domain
Infecting executable files
Sending an HTTP POST request to an infection source
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/6436a9af072bc28e4595d4bf/reports/3654ed77-dfce-4d3f-b551-5e795c6b3037/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/f91550582e9e831cba0a8ee62a9a47b3f9a4f1f24e228353d6f5050bc1b52509
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/1571f86b-7748-4995-aa00-6fec3099f741
Result
Threat name:
BluStealer, ThunderFox Stealer, a310Logg
Create hunting rule
Detection:
malicious
Classification:
rans.spre.troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1212649
Signature
.NET source code contains potential unpacker
Allocates memory in foreign processes
Antivirus detection for dropped file
Antivirus detection for URL or domain
Creates files inside the volume driver (system volume information)
Drops executable to a common third party application directory
Found potential ransomware demand text
Infects executable files (exe, dll, sys, html)
Initial sample is a PE file and has a suspicious name
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)
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for submitted file
Snort IDS alert for network traffic
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to download HTTP data from a sinkholed server
Tries to harvest and steal browser information (history, passwords, etc)
Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Uses the Telegram API (likely for C&C communication)
Writes to foreign memory regions
Yara detected a310Logger
Yara detected BluStealer
Yara detected ThunderFox Stealer
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 845565 Sample: Purchase_Order.exe Startdate: 12/04/2023 Architecture: WINDOWS Score: 100 47 xlfhhhm.biz 2->47 55 Tries to download HTTP data from a sinkholed server 2->55 57 Snort IDS alert for network traffic 2->57 59 Multi AV Scanner detection for domain / URL 2->59 61 14 other signatures 2->61 8 Purchase_Order.exe 3 2->8         started        11 FXSSVC.exe 14 5 2->11         started        14 perfhost.exe 2->14         started        16 16 other processes 2->16 signatures3 process4 dnsIp5 39 C:\Users\user\...\Purchase_Order.exe.log, ASCII 8->39 dropped 19 Purchase_Order.exe 1 8 8->19         started        24 Purchase_Order.exe 8->24         started        26 Purchase_Order.exe 8->26         started        71 Antivirus detection for dropped file 11->71 73 Machine Learning detection for dropped file 11->73 41 saytjshyf.biz 173.231.184.124, 49734, 80 VOXEL-DOT-NETUS United States 16->41 43 xlfhhhm.biz 173.231.189.15, 49732, 80 VOXEL-DOT-NETUS United States 16->43 45 24 other IPs or domains 16->45 75 Creates files inside the volume driver (system volume information) 16->75 file6 signatures7 process8 dnsIp9 49 zlenh.biz 19->49 51 ww25.uhxqin.biz 19->51 53 13 other IPs or domains 19->53 31 C:\Windows\System32\xbgmsvc.exe, PE32+ 19->31 dropped 33 C:\Windows\System32\wbengine.exe, PE32+ 19->33 dropped 35 C:\Windows\System32\wbem\WmiApSrv.exe, PE32+ 19->35 dropped 37 38 other malicious files 19->37 dropped 63 Writes to foreign memory regions 19->63 65 Allocates memory in foreign processes 19->65 67 Drops executable to a common third party application directory 19->67 69 2 other signatures 19->69 28 AppLaunch.exe 2 19->28         started        file10 signatures11 process12 signatures13 77 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 28->77 79 Tries to steal Mail credentials (via file / registry access) 28->79 81 Tries to harvest and steal browser information (history, passwords, etc) 28->81
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/f91550582e9e831cba0a8ee62a9a47b3f9a4f1f24e228353d6f5050bc1b52509/
Threat name:
Win32.Trojan.Casdet
Create hunting rule
Status:
Malicious
First seen:
2023-04-12 08:58:02 UTC
File Type:
PE (.Net Exe)
Extracted files:
7
AV detection:
18 of 24 (75.00%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=7ekvawbot2brzoqkr3tcvgshwp42j4psjyrigu6w6ucqxqnveueq._file
Verdict:
malicious
Similar samples:
0f71aedb95163de525fa395b1a444f48222bc28b70521bff45467cbf98b63b9a
BluStealer
283d5eea1f9fc34e351deacc25006fc1997566932fae44db4597c84f1f1f3a30
BluStealer
708f366019c67cdec28a6950aa2a24f4ba274ebdadc35339ce1208ea971fc668
BluStealer
7aba21bd10b88275b4620021abc90e8d0e5f8f0316e8d8c0b883554afc18f8ae
BluStealer
9c4d77de2d7d2630f8f8ebe6d39340b7312af224764b75c0d165e8fff3411bc4
BluStealer
ae4525147a1777b2b22af1f721927ae92b320550127596990648a02d528604c7
BluStealer
b1516cc28d0e6e3f77a8eadd2a7fda7daf746e0a7b27088e016519baf8de0338
BluStealer
f76c4cbfd0f66af33781adf386474e1d00a76d98d822a41fb6092d27c5726cb6
BluStealer
+ 3 additional samples on MalwareBazaar
Result
Malware family:
blustealer
Create hunting rule
Score:
  10/10
Tags:
family:blustealer collection spyware stealer
Link:
https://tria.ge/reports/230412-p4mj2acd46/
Behaviour
Checks SCSI registry key(s)
Checks processor information in registry
Modifies data under HKEY_USERS
Script User-Agent
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: LoadsDriver
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Uses Volume Shadow Copy WMI provider
Uses Volume Shadow Copy service COM API
outlook_office_path
outlook_win_path
Enumerates physical storage devices
Drops file in Program Files directory
Drops file in Windows directory
Drops file in System32 directory
Suspicious use of SetThreadContext
Accesses Microsoft Outlook profiles
Executes dropped EXE
Loads dropped DLL
Reads user/profile data of web browsers
BluStealer
Malware Config
C2 Extraction:
https://api.telegram.org/bot5797428905:AAGaRRXGZN1d9GGFd3sE5x4uSpCGF0PU4m4/sendMessage?chat_id=1251788325
Unpacked files
SH256 hash:
2b6bb9637f7134c2eccd8b4dc740d1445fac04710abc04f8823bce2b63042ac9
MD5 hash:
6fa615f675dd4a68b9a1d527effc5d80
SHA1 hash:
7901c4dad10c87456b8b06ec4bea3a50f822b934
Link:
https://www.unpac.me/results/79f1a15b-5a91-4b52-9b85-8c2024e2af75/
SH256 hash:
fc9bb9746aaa4e07944b2c1338d26ac852531a6e6c97e98f6a56202d27ff607c
MD5 hash:
d2ec533f8b40a8224d79c87c2291f943
SHA1 hash:
f305fa4c5c8525e853fbdbcf5c8cedad9ba08fd2
Link:
https://www.unpac.me/results/79f1a15b-5a91-4b52-9b85-8c2024e2af75/
SH256 hash:
f18ac2764ff080d5fc2eafe28f550cdf714118ed751656c1bc93ff6a45e85b64
MD5 hash:
84b2b85b90a944c02de796e5e4212bfc
SHA1 hash:
cd89d9d9f794f7ef2950416aea748b89d2042236
Link:
https://www.unpac.me/results/79f1a15b-5a91-4b52-9b85-8c2024e2af75/
SH256 hash:
13803c8cbfc4f990e156483ecc279be433a134de83100a730189ee2957763f5b
MD5 hash:
58cd07e8097ddfad4a7bb00d45f8798c
SHA1 hash:
963bc56a1f488732df08ae4db43a802930fe73be
Link:
https://www.unpac.me/results/79f1a15b-5a91-4b52-9b85-8c2024e2af75/
SH256 hash:
40c050c20d957d26b932faf690f9c2933a194aa6607220103ec798f46ac03403
MD5 hash:
c768bac25fc6f0551a11310e7caba8d5
SHA1 hash:
95f9195e959fb48277c95d1dd1c97a4edff7cb3a
Link:
https://www.unpac.me/results/79f1a15b-5a91-4b52-9b85-8c2024e2af75/
SH256 hash:
d219bbb38900d3b9c97dcb516a68bad7cb4721c521771f44ea53d6bc765652cc
MD5 hash:
71d967a3f4ddc4f13f21ff0d9db3c49e
SHA1 hash:
83692dd59615818a762ab6051b493e3b4e113e2a
Link:
https://www.unpac.me/results/79f1a15b-5a91-4b52-9b85-8c2024e2af75/
SH256 hash:
f074b2c09142fa55caae482b5ec6ba350fda0ac62329bb825d61f21e2e7059a1
MD5 hash:
567bbf43aac601560b1def4a872d4089
SHA1 hash:
21dfc6e6ecf39c9c23927c114ca911559ca4593e
Link:
https://www.unpac.me/results/79f1a15b-5a91-4b52-9b85-8c2024e2af75/
SH256 hash:
9dc7c5f5d889aebb2e0f63d5b5a7887c37a2cf002bd1aa66229bffbc5fcb4717
MD5 hash:
3a24c7f9a1246d99f52edc9251227a1e
SHA1 hash:
47a0072ffc1daa0b7537a0fbc99d67ca880560c3
Link:
https://www.unpac.me/results/79f1a15b-5a91-4b52-9b85-8c2024e2af75/
SH256 hash:
f91550582e9e831cba0a8ee62a9a47b3f9a4f1f24e228353d6f5050bc1b52509
MD5 hash:
196ea9c9b65880978d9a087b578d3219
SHA1 hash:
e7c20cf1cb49c948dd29bc02613958a249e349b2
Link:
https://www.unpac.me/results/79f1a15b-5a91-4b52-9b85-8c2024e2af75/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/f91550582e9e/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Expiro
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/f91550582e9e831cba0a8ee62a9a47b3f9a4f1f24e228353d6f5050bc1b52509

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.

Cape
Cape
https://www.capesandbox.com/analysis/381799/

Comments