MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 48d5d5bc835c9bfa24c2f7fb0e3149190639d1d53eb99fac9b6a97df0f6d2908. 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



Formbook


Vendor detections: 8


Intelligence 8 IOCs YARA File information Comments 1

SHA256 hash: 48d5d5bc835c9bfa24c2f7fb0e3149190639d1d53eb99fac9b6a97df0f6d2908
SHA3-384 hash: 90732a9a81487a1d5b586694263319513657c798e3b4cfe501a5274f156676e05a4d993a3f0cec39b37f43bdcb4d7cfb
SHA1 hash: 8bd5c99ed285cb37429a7bf4a6e14012e4c04e1d
MD5 hash: 4a391bca07af23a8e735b4e4bba0a195
humanhash: florida-maryland-mobile-wyoming
File name:48d5d5bc835c9bfa24c2f7fb0e3149190639d1d53eb99fac9b6a97df0f6d2908 (1)
Download: download sample
Signature Formbook
File size:321'536 bytes
First seen:2021-04-20 01:30:12 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'742 x AgentTesla, 19'606 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 6144:W9GW0GoltHBYjbbtui/mm5406SyfCyZihhyq8LX:UDspBYjlu6wPzqd8LX
Threatray 4'756 similar samples on MalwareBazaar
TLSH B864F160E4009151F9709A76D2F6992077E6ACC1ACF6FE19A8D9B25731F33E304A5E0F
Reporter Anonymous
Tags:FormBook

Intelligence


File Origin
# of uploads :
1
# of downloads :
95
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Lrrxgan.exe
Verdict:
Malicious activity
Analysis date:
2021-04-20 01:24:39 UTC
Tags:
n/a

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Result
Verdict:
Malware
Maliciousness:

Behaviour
DNS request
Sending a UDP request
Creating a file in the %temp% directory
Creating a process from a recently created file
Launching a service
Deleting a recently created file
Creating a file in the %AppData% directory
Creating a file
Launching a process
Launching cmd.exe command interpreter
Unauthorized injection to a recently created process
Unauthorized injection to a recently created process by context flags manipulation
Enabling autorun
Unauthorized injection to a system process
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.
Result
Threat name:
FormBook
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Signature
.NET source code contains potential unpacker
Allocates memory in foreign processes
C2 URLs / IPs found in malware configuration
Creates an undocumented autostart registry key
Found malware configuration
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)
Maps a DLL or memory area into another process
Modifies the context of a thread in another process (thread injection)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
System process connects to network (likely due to code injection or exploit)
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to detect virtualization through RDTSC time measurements
Writes to foreign memory regions
Yara detected Costura Assembly Loader
Yara detected FormBook
Behaviour
Behavior Graph:
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 393211 Sample: 4EQNFqt5Nm Startdate: 20/04/2021 Architecture: WINDOWS Score: 100 48 www.jeansquaredok.com 2->48 50 www.fidelcarrasco.com 2->50 52 fidelcarrasco.com 2->52 66 Found malware configuration 2->66 68 Malicious sample detected (through community Yara rule) 2->68 70 Multi AV Scanner detection for dropped file 2->70 72 8 other signatures 2->72 11 4EQNFqt5Nm.exe 1 6 2->11         started        signatures3 process4 file5 40 C:\Users\user\AppData\Roaming\chrome.exe, PE32 11->40 dropped 42 C:\Users\user\AppData\...\4EQNFqt5Nm.exe, PE32 11->42 dropped 44 C:\Users\user\...\chrome.exe:Zone.Identifier, ASCII 11->44 dropped 46 3 other files (2 malicious) 11->46 dropped 76 Creates an undocumented autostart registry key 11->76 78 Writes to foreign memory regions 11->78 80 Allocates memory in foreign processes 11->80 82 Injects a PE file into a foreign processes 11->82 15 4EQNFqt5Nm.exe 11->15         started        18 4EQNFqt5Nm.exe 11->18         started        20 AdvancedRun.exe 1 11->20         started        23 AdvancedRun.exe 1 11->23         started        signatures6 process7 dnsIp8 84 Modifies the context of a thread in another process (thread injection) 15->84 86 Maps a DLL or memory area into another process 15->86 88 Sample uses process hollowing technique 15->88 90 Queues an APC in another process (thread injection) 15->90 25 explorer.exe 15->25 injected 92 Multi AV Scanner detection for dropped file 18->92 94 Machine Learning detection for dropped file 18->94 96 Tries to detect virtualization through RDTSC time measurements 18->96 54 192.168.2.1 unknown unknown 20->54 29 AdvancedRun.exe 20->29         started        31 AdvancedRun.exe 23->31         started        signatures9 process10 dnsIp11 56 www.mybotchedlipo.com 107.164.222.94, 49753, 80 EGIHOSTINGUS United States 25->56 58 www.yuemion.com 52.58.78.16, 49752, 80 AMAZON-02US United States 25->58 74 System process connects to network (likely due to code injection or exploit) 25->74 33 explorer.exe 25->33         started        signatures12 process13 signatures14 60 Modifies the context of a thread in another process (thread injection) 33->60 62 Maps a DLL or memory area into another process 33->62 64 Tries to detect virtualization through RDTSC time measurements 33->64 36 cmd.exe 1 33->36         started        process15 process16 38 conhost.exe 36->38         started       
Gathering data
Result
Malware family:
xloader
Score:
  10/10
Tags:
family:xloader loader persistence rat
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of UnmapMainImage
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Deletes itself
Loads dropped DLL
Executes dropped EXE
Nirsoft
Xloader Payload
Modifies WinLogon for persistence
Xloader
Malware Config
C2 Extraction:
http://www.numbri.com/sb9r/
Please note that we are no longer able to provide a coverage score for Virus Total.

File information


The table below shows additional information about this malware sample such as delivery method and external references.

Comments



Avatar
a̵c̵c̸i̵d̷e̵n̷t̴a̷l̴r̵e̷b̸e̴l̸ commented on 2021-04-20 02:04:27 UTC

============================================================
MBC behaviors list (github.com/accidentalrebel/mbcscan):
============================================================
0) [B0009] Anti-Behavioral Analysis::Virtual Machine Detection