MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 81a5ac22ffef8e50131f663708e5f579e1d74c0464994a909cd3426be6887a4a. 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


Phobos


Vendor detections: 14


Intelligence 14 IOCs YARA 1 File information Comments
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SHA256 hash: 81a5ac22ffef8e50131f663708e5f579e1d74c0464994a909cd3426be6887a4a
SHA3-384 hash: fb74775e83770d24cc90da67d90a2e49498ee138c1e3d36d840832ec54cfc7486085f7d63bcd7ef06c9ae45fc71b72df
SHA1 hash: 89371ab9c5f1882b2d6b97ceb8aca143a4276b07
MD5 hash: 7378712fa2b8cfa0b87ef80ca12e3ebd
humanhash: indigo-eighteen-happy-east
File name:81a5ac22ffef8e50131f663708e5f579e1d74c0464994a909cd3426be6887a4a
Download: download sample
Signature Phobos
Create hunting rule
File size:56'832 bytes
First seen:2022-10-11 06:32:24 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 851a0ba8fbb71710075bdfe6dcef92eb (67 x Phobos, 2 x Worm.Ramnit)
ssdeep 1536:ZNeRBl5PT/rx1mzwRMSTdLpJypY95ybbkh94+:ZQRrmzwR5Jya5y
Threatray 2'794 similar samples on MalwareBazaar
TLSH T15643B00674A980B2CEB58670253A6F5F4FFE6108407448974F394D9B3EE5137EB2A37A
TrID 32.2% (.EXE) Win64 Executable (generic) (10523/12/4)
20.1% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
15.4% (.EXE) Win16 NE executable (generic) (5038/12/1)
13.7% (.EXE) Win32 Executable (generic) (4505/5/1)
6.2% (.EXE) OS/2 Executable (generic) (2029/13)
Reporter petikvx
Tags:Phobos

Intelligence

File Origin
# of uploads :
1
# of downloads :
198
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/318768/
Detection(s):
Win.Ransomware.Ulise-7594403-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Сreating synchronization primitives
Launching a service
Searching for synchronization primitives
Creating a file
Launching cmd.exe command interpreter
Creating a process with a hidden window
Modifying an executable file
Changing a file
Replacing executable files
Launching the process to change network settings
Creating a file in the Program Files directory
Creating a file in the Program Files subdirectories
Moving a file to the Program Files subdirectory
Launching the process to change the firewall settings
Creating a file in the %AppData% subdirectories
Launching a process
Creating a window
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Creating a file in the mass storage device
Deleting volume shadow copies
Enabling autorun for a service
Preventing system recovery
Enabling autorun by creating a file
Infecting executable files
Result
Malware family:
n/a
Score:
  8/10
Tags:
n/a
Link:
https://dragonfly.certego.net/analysis/42433/overview
Behaviour
MalwareBazaar
SystemUptime
CallSleep
CheckMutex
EvasionGetTickCount
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
greyware packed shell32.dll
Link:
https://www.filescan.io/uploads/63450e1f1ddf36bcc3f45dac/reports/02fedbc1-6a44-46fd-bc46-0a7eb9417631/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:
Phobos Ransomware
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/bb8b5ede-99f1-4a0c-a5f0-a1507713271d
Result
Threat name:
Unknown
Detection:
malicious
Classification:
rans.spre.adwa.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1087679
Signature
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Creates files in the recycle bin to hide itself
Creates files inside the volume driver (system volume information)
Deletes shadow drive data (may be related to ransomware)
Deletes the backup plan of Windows
Drops PE files to the startup folder
Infects executable files (exe, dll, sys, html)
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
May disable shadow drive data (uses vssadmin)
Modifies the windows firewall
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: Delete shadow copy via WMIC
Uses bcdedit to modify the Windows boot settings
Uses netsh to modify the Windows network and firewall settings
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 720253 Sample: 764XMaAwse.exe Startdate: 11/10/2022 Architecture: WINDOWS Score: 100 64 Malicious sample detected (through community Yara rule) 2->64 66 Antivirus detection for dropped file 2->66 68 Antivirus / Scanner detection for submitted sample 2->68 70 6 other signatures 2->70 7 764XMaAwse.exe 1 230 2->7         started        11 764XMaAwse.exe 2->11         started        13 wbengine.exe 3 2->13         started        15 5 other processes 2->15 process3 file4 48 C:\ProgramData\Microsoft\...\764XMaAwse.exe, PE32 7->48 dropped 50 C:\...\764XMaAwse.exe:Zone.Identifier, ASCII 7->50 dropped 52 desktop.ini.id[D0E...tutanota.com].Elbie, data 7->52 dropped 72 Creates files in the recycle bin to hide itself 7->72 74 Drops PE files to the startup folder 7->74 76 Infects executable files (exe, dll, sys, html) 7->76 17 cmd.exe 1 7->17         started        20 764XMaAwse.exe 2 6 7->20         started        24 cmd.exe 7->24         started        78 Antivirus detection for dropped file 11->78 80 Machine Learning detection for dropped file 11->80 82 Creates files inside the volume driver (system volume information) 13->82 signatures5 process6 dnsIp7 56 May disable shadow drive data (uses vssadmin) 17->56 58 Deletes shadow drive data (may be related to ransomware) 17->58 60 Uses netsh to modify the Windows network and firewall settings 17->60 62 3 other signatures 17->62 26 bcdedit.exe 8 1 17->26         started        28 bcdedit.exe 7 1 17->28         started        30 WMIC.exe 1 17->30         started        38 3 other processes 17->38 54 192.168.2.1 unknown unknown 20->54 40 C:\Users\user\AppData\...\764XMaAwse.exe, PE32 20->40 dropped 42 C:\Users\user\AppData\Local\764XMaAwse.exe, PE32 20->42 dropped 44 C:\Users\...\764XMaAwse.exe:Zone.Identifier, ASCII 20->44 dropped 46 C:\Users\...\764XMaAwse.exe:Zone.Identifier, ASCII 20->46 dropped 32 netsh.exe 3 24->32         started        34 netsh.exe 3 24->34         started        36 conhost.exe 24->36         started        file8 signatures9 process10
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/81a5ac22ffef8e50131f663708e5f579e1d74c0464994a909cd3426be6887a4a/
Threat name:
Win32.Ransomware.Phobos
Create hunting rule
Status:
Malicious
First seen:
2022-09-01 04:17:50 UTC
File Type:
PE (Exe)
AV detection:
24 of 26 (92.31%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=qgs2yix756hfaey7my3qrzpvphq5otaemsmuvee42nbgxzuipjfa._file
Verdict:
malicious
Similar samples:
0b4c743246478a6a8c9fa3ff8e04f297507c2f0ea5d61a1284fe65387d172f81
Phobos
25dce15057f3e9f904ea28e039fe0d2945308d7f41ea5386e99af4840c2e6762
Phobos
34e1a82f7334c825aab19a21d94361c3225ee8ad9a2027830aeea7d82f59ca15
Phobos
64cc071973e05ae577f32bab349fafb4dba96ba9b8cab272aa5cd9d6074e5a39
Phobos
992dad791a523f2c0a0b5a74c08e5573905f301d8891db0ed6e885face9ef0e2
Phobos
ed42bb9e3f5959e3d58872874381d92e50c601cd1be46effeb3724ff19eeef71
Phobos
+ 2'784 additional samples on MalwareBazaar
Result
Malware family:
phobos
Create hunting rule
Score:
  10/10
Tags:
family:phobos evasion persistence ransomware spyware stealer
Link:
https://tria.ge/reports/221011-ha7jsaaeek/
Behaviour
Checks SCSI registry key(s)
Interacts with shadow copies
Modifies Internet Explorer settings
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Drops file in Program Files directory
Adds Run key to start application
Drops desktop.ini file(s)
Drops startup file
Reads user/profile data of web browsers
Deletes backup catalog
Modifies Windows Firewall
Modifies extensions of user files
Deletes shadow copies
Modifies boot configuration data using bcdedit
Phobos
Suspicious use of NtCreateUserProcessOtherParentProcess
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/dec48d31-1a7c-4372-ad38-4274aa8c1d5f
Unpacked files
SH256 hash:
81a5ac22ffef8e50131f663708e5f579e1d74c0464994a909cd3426be6887a4a
MD5 hash:
7378712fa2b8cfa0b87ef80ca12e3ebd
SHA1 hash:
89371ab9c5f1882b2d6b97ceb8aca143a4276b07
Link:
https://www.unpac.me/results/f8fef816-b423-4649-bbf2-86305c8b6298/
Malware family:
Dharma
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/81a5ac22ffef/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/81a5ac22ffef8e50131f663708e5f579e1d74c0464994a909cd3426be6887a4a

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:MALWARE_Win_Phobos
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Author:ditekshen
Description:Detects Phobos ransomware

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/318768/

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