MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 7b1fb7ca141117d49e746b6928132dbe0dbc69fce6e6110c20c449e91ec18d25. 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: 10


Intelligence 10 IOCs YARA 2 File information Comments

SHA256 hash: 7b1fb7ca141117d49e746b6928132dbe0dbc69fce6e6110c20c449e91ec18d25
SHA3-384 hash: 1e5c564197f115545125269ee51cb4403f17b9f04c237eccd51999d9f0f9fdd68b8c5bdc662c6fd17e9e909d0f52d4c8
SHA1 hash: 5bf6051b56235c9db852da236be424bb52826e4d
MD5 hash: 247a67e80054c44fa1f03d98ce06ece8
humanhash: three-equal-echo-diet
File name:triage_dropped_file
Download: download sample
Signature Formbook
File size:418'816 bytes
First seen:2022-08-02 14:38:41 UTC
Last seen:2022-08-02 16:25:50 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'744 x AgentTesla, 19'608 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 384:6jslmUqkZquO3UNp0WWrwWIvDn/OcIUmhwN2rgG6666+f666Zrt2mHWCdQ44ipD:6o0GpVrj/ode2rgYt2mB4id
TLSH T13894185032F4E7DBD7634A3F78AEB0E49D232F3E48674D962E91BF0B54700A829E5119
TrID 72.5% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.4% (.EXE) Win64 Executable (generic) (10523/12/4)
6.5% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.4% (.EXE) Win32 Executable (generic) (4505/5/1)
2.0% (.EXE) OS/2 Executable (generic) (2029/13)
File icon (PE):PE icon
dhash icon f4c4c4f0b2b49adc (1 x Formbook)
Reporter malwarelabnet
Tags:exe FormBook

Intelligence


File Origin
# of uploads :
2
# of downloads :
286
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
triage_dropped_file
Verdict:
No threats detected
Analysis date:
2022-08-03 07:12:20 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
Сreating synchronization primitives
Launching a process
Creating a process with a hidden window
Creating a file in the %AppData% subdirectories
Creating a file
Launching cmd.exe command interpreter
Searching for synchronization primitives
Setting browser functions hooks
Query of malicious DNS domain
Forced shutdown of a system process
Sending an HTTP GET request to an infection source
Enabling autorun by creating a file
Unauthorized injection to a system process
Unauthorized injection to a browser process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
packed
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
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Creates an undocumented autostart registry key
Encrypted powershell cmdline option found
Injects a PE file into a foreign processes
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)
Modifies the prolog of user mode functions (user mode inline hooks)
Multi AV Scanner detection for domain / URL
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
Snort IDS alert for network traffic
System process connects to network (likely due to code injection or exploit)
Tries to detect virtualization through RDTSC time measurements
Writes to foreign memory regions
Yara detected FormBook
Yara detected Generic Downloader
Behaviour
Behavior Graph:
behaviorgraph top1 signatures2 2 Behavior Graph ID: 677455 Sample: triage_dropped_file Startdate: 02/08/2022 Architecture: WINDOWS Score: 100 43 Snort IDS alert for network traffic 2->43 45 Multi AV Scanner detection for domain / URL 2->45 47 Malicious sample detected (through community Yara rule) 2->47 49 8 other signatures 2->49 10 triage_dropped_file.exe 15 7 2->10         started        process3 dnsIp4 39 my-med.ga 192.185.174.177, 49739, 80 UNIFIEDLAYER-AS-1US United States 10->39 41 192.168.2.1 unknown unknown 10->41 33 C:\Users\user\AppData\Roaming\...\Mdtcb.exe, PE32 10->33 dropped 35 C:\Users\user\...\triage_dropped_file.exe.log, ASCII 10->35 dropped 59 Creates an undocumented autostart registry key 10->59 61 Encrypted powershell cmdline option found 10->61 63 Writes to foreign memory regions 10->63 65 2 other signatures 10->65 15 MSBuild.exe 10->15         started        18 powershell.exe 17 10->18         started        file5 signatures6 process7 signatures8 67 Modifies the context of a thread in another process (thread injection) 15->67 69 Maps a DLL or memory area into another process 15->69 71 Sample uses process hollowing technique 15->71 73 2 other signatures 15->73 20 explorer.exe 15->20 injected 24 conhost.exe 18->24         started        process9 dnsIp10 37 www.cshong-ya.com 154.215.186.165, 49827, 80 DXTL-HKDXTLTseungKwanOServiceHK Seychelles 20->37 51 System process connects to network (likely due to code injection or exploit) 20->51 26 cscript.exe 20->26         started        signatures11 process12 signatures13 53 Modifies the context of a thread in another process (thread injection) 26->53 55 Maps a DLL or memory area into another process 26->55 57 Tries to detect virtualization through RDTSC time measurements 26->57 29 cmd.exe 1 26->29         started        process14 process15 31 conhost.exe 29->31         started       
Threat name:
ByteCode-MSIL.Backdoor.Androm
Status:
Malicious
First seen:
2022-08-02 13:15:27 UTC
File Type:
PE (.Net Exe)
Extracted files:
18
AV detection:
21 of 26 (80.77%)
Threat level:
  5/5
Verdict:
malicious
Label(s):
formbook
Result
Malware family:
formbook
Score:
  10/10
Tags:
family:formbook campaign:s4s9 rat spyware stealer trojan
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Checks computer location settings
Formbook payload
Formbook
Unpacked files
SH256 hash:
7b1fb7ca141117d49e746b6928132dbe0dbc69fce6e6110c20c449e91ec18d25
MD5 hash:
247a67e80054c44fa1f03d98ce06ece8
SHA1 hash:
5bf6051b56235c9db852da236be424bb52826e4d
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:pe_imphash
Rule name:Skystars_Malware_Imphash
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

Formbook

Executable exe 7b1fb7ca141117d49e746b6928132dbe0dbc69fce6e6110c20c449e91ec18d25

(this sample)

  
Delivery method
Distributed via web download

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