MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 1b83c370bc5d9ac1574e2225fc5fcd1a79e29eed0c43b1c97326627946984ff0. 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: 12


Intelligence 12 IOCs YARA 3 File information Comments 1

SHA256 hash: 1b83c370bc5d9ac1574e2225fc5fcd1a79e29eed0c43b1c97326627946984ff0
SHA3-384 hash: 060550a6f695ae4ac2e01e7ada12e331513a92523f1288863c0883c69db1fa1a06f2920e5f98995070aac164751a9c99
SHA1 hash: bcf1446865783d95e4c1700a0ded2cf0d661e7ae
MD5 hash: b7fe8c8e4feb3539837fa5910a789705
humanhash: monkey-jig-three-dakota
File name:b7fe8c8e4feb3539837fa5910a789705
Download: download sample
Signature Formbook
File size:128'512 bytes
First seen:2022-05-10 11:59:26 UTC
Last seen:2022-05-10 12:52:06 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 1536:b/8bl3ZXDSYAL0uiOxzLmuz1cbnB0wh1p6ZB:CE0yxzSUqzXLeB
Threatray 1'318 similar samples on MalwareBazaar
TLSH T165C39DE3B954C265C9BE19377A2BB34892A6ADC55DF2C1337D52371F29723024C13A2B
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 2074d0cac2a4c048 (1 x Formbook)
Reporter zbetcheckin
Tags:32 exe FormBook

Intelligence


File Origin
# of uploads :
2
# of downloads :
240
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
b7fe8c8e4feb3539837fa5910a789705
Verdict:
Malicious activity
Analysis date:
2022-05-10 12:06:13 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
DNS request
Sending an HTTP GET request
Running batch commands
Creating a process with a hidden window
Launching a process
Creating a file in the %AppData% subdirectories
Creating a file
Launching cmd.exe command interpreter
Searching for synchronization primitives
Setting browser functions hooks
Forced shutdown of a system process
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:
obfuscated
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.
Result
Threat name:
FormBook
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Signature
.NET source code contains potential unpacker
Antivirus detection for URL or domain
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 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
Tries to detect virtualization through RDTSC time measurements
Writes to foreign memory regions
Yara detected FormBook
Behaviour
Behavior Graph:
behaviorgraph top1 signatures2 2 Behavior Graph ID: 623531 Sample: whlkvCu2fW Startdate: 10/05/2022 Architecture: WINDOWS Score: 100 40 Snort IDS alert for network traffic 2->40 42 Multi AV Scanner detection for domain / URL 2->42 44 Found malware configuration 2->44 46 9 other signatures 2->46 9 whlkvCu2fW.exe 15 7 2->9         started        process3 dnsIp4 38 rocksolidfab.ga 192.185.174.180, 49736, 80 UNIFIEDLAYER-AS-1US United States 9->38 32 C:\Users\user\AppData\Roaming\...\Saptel.exe, PE32 9->32 dropped 34 C:\Users\user\...\Saptel.exe:Zone.Identifier, ASCII 9->34 dropped 36 C:\Users\user\AppData\...\whlkvCu2fW.exe.log, ASCII 9->36 dropped 50 Creates an undocumented autostart registry key 9->50 52 Writes to foreign memory regions 9->52 54 Injects a PE file into a foreign processes 9->54 14 MSBuild.exe 9->14         started        17 cmd.exe 1 9->17         started        file5 signatures6 process7 signatures8 56 Modifies the context of a thread in another process (thread injection) 14->56 58 Maps a DLL or memory area into another process 14->58 60 Sample uses process hollowing technique 14->60 62 2 other signatures 14->62 19 explorer.exe 14->19 injected 21 timeout.exe 1 17->21         started        23 conhost.exe 17->23         started        process9 process10 25 wscript.exe 19->25         started        28 conhost.exe 21->28         started        signatures11 48 Tries to detect virtualization through RDTSC time measurements 25->48 30 cmd.exe 1 25->30         started        process12
Threat name:
ByteCode-MSIL.Trojan.Injuke
Status:
Malicious
First seen:
2022-05-10 09:26:24 UTC
File Type:
PE (.Net Exe)
Extracted files:
8
AV detection:
16 of 26 (61.54%)
Threat level:
  5/5
Result
Malware family:
formbook
Score:
  10/10
Tags:
family:formbook campaign:s4s9 rat spyware stealer suricata trojan
Behaviour
Delays execution with timeout.exe
Gathers network information
Modifies registry class
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
suricata: ET MALWARE FormBook CnC Checkin (GET)
Unpacked files
SH256 hash:
1b83c370bc5d9ac1574e2225fc5fcd1a79e29eed0c43b1c97326627946984ff0
MD5 hash:
b7fe8c8e4feb3539837fa5910a789705
SHA1 hash:
bcf1446865783d95e4c1700a0ded2cf0d661e7ae
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:INDICATOR_EXE_Packed_SmartAssembly
Author:ditekSHen
Description:Detects executables packed with SmartAssembly
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 1b83c370bc5d9ac1574e2225fc5fcd1a79e29eed0c43b1c97326627946984ff0

(this sample)

  
Delivery method
Distributed via web download

Comments



Avatar
zbet commented on 2022-05-10 11:59:28 UTC

url : hxxp://107.175.3.53/b/gb.exe