MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 bb31f67ff9a8985a41245a540c463ddf3b997827c5f76993b766c908fac37ba0. 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: 14


Intelligence 14 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: bb31f67ff9a8985a41245a540c463ddf3b997827c5f76993b766c908fac37ba0
SHA3-384 hash: e2363ac4b68aaca32229dfe86fe56ee429305c2c59f1cfd7375b034d33b1b4b1a4f025ba6b66be9187d0d4ed58c3b861
SHA1 hash: c75e002876d9c16ac317b9c20c0fb3125f6c6dac
MD5 hash: a615ff6ffc21a5ec3891c289d4f0ad06
humanhash: mockingbird-seventeen-double-west
File name:quotation.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:912'896 bytes
First seen:2022-10-18 07:26:37 UTC
Last seen:2022-10-18 08:27:24 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'740 x AgentTesla, 19'600 x Formbook, 12'241 x SnakeKeylogger)
ssdeep 12288:JCRjGwjs/sNXpgfavgxmEsu0AH0vOT7bRnd3efOm4IFrRa5JMu:UDNydxNlBpT7ZxeXJR+
TLSH T115155A7A21964517E429327584C3D2F32AFBAE607061D1CB9AD76F6FBC401BF9213346
TrID 61.5% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
11.0% (.SCR) Windows screen saver (13101/52/3)
8.8% (.EXE) Win64 Executable (generic) (10523/12/4)
5.5% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.2% (.EXE) Win16 NE executable (generic) (5038/12/1)
Reporter adrian__luca
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
230
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/321261/
Detection(s):
SecuriteInfo.com.Trojan.PWS.Stealer.23680.1258.23287.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Adding an access-denied ACE
Сreating synchronization primitives
Creating a process from a recently created file
Creating a process with a hidden window
Launching a process
Launching cmd.exe command interpreter
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/634e5558b5f60e72b8c7387e/reports/0a59db64-5905-4e1c-9fc8-4cfdf9ae3b08/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:
Formbook
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/2593e89c-0347-455e-927c-48f5705bb5e2
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1092526
Signature
.NET source code contains potential unpacker
Adds a directory exclusion to Windows Defender
C2 URLs / IPs found in malware configuration
Initial sample is a PE file and has a suspicious name
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)
Modifies the prolog of user mode functions (user mode inline hooks)
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
Sigma detected: Scheduled temp file as task from temp location
Snort IDS alert for network traffic
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
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 725154 Sample: quotation.exe Startdate: 18/10/2022 Architecture: WINDOWS Score: 100 68 Snort IDS alert for network traffic 2->68 70 Malicious sample detected (through community Yara rule) 2->70 72 Sigma detected: Scheduled temp file as task from temp location 2->72 74 9 other signatures 2->74 10 quotation.exe 7 2->10         started        14 IhSdtxJ.exe 5 2->14         started        process3 file4 48 C:\Users\user\AppData\Roaming\IhSdtxJ.exe, PE32 10->48 dropped 50 C:\Users\user\...\IhSdtxJ.exe:Zone.Identifier, ASCII 10->50 dropped 52 C:\Users\user\AppData\Local\...\tmpF044.tmp, XML 10->52 dropped 54 C:\Users\user\AppData\...\quotation.exe.log, ASCII 10->54 dropped 82 Uses schtasks.exe or at.exe to add and modify task schedules 10->82 84 Adds a directory exclusion to Windows Defender 10->84 86 Tries to detect virtualization through RDTSC time measurements 10->86 16 quotation.exe 10->16         started        19 powershell.exe 20 10->19         started        21 schtasks.exe 1 10->21         started        88 Multi AV Scanner detection for dropped file 14->88 90 Machine Learning detection for dropped file 14->90 23 IhSdtxJ.exe 14->23         started        25 schtasks.exe 1 14->25         started        27 IhSdtxJ.exe 14->27         started        signatures5 process6 signatures7 60 Modifies the context of a thread in another process (thread injection) 16->60 62 Maps a DLL or memory area into another process 16->62 64 Sample uses process hollowing technique 16->64 66 Queues an APC in another process (thread injection) 16->66 29 explorer.exe 16->29 injected 33 conhost.exe 19->33         started        35 conhost.exe 21->35         started        37 conhost.exe 25->37         started        process8 dnsIp9 56 pltraffic13.com 72.52.178.23, 49697, 80 LIQUIDWEBUS United States 29->56 58 www.voidssl.life 29->58 92 System process connects to network (likely due to code injection or exploit) 29->92 39 cmstp.exe 29->39         started        42 help.exe 29->42         started        signatures10 process11 signatures12 76 Modifies the context of a thread in another process (thread injection) 39->76 78 Maps a DLL or memory area into another process 39->78 80 Tries to detect virtualization through RDTSC time measurements 39->80 44 cmd.exe 1 39->44         started        process13 process14 46 conhost.exe 44->46         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/bb31f67ff9a8985a41245a540c463ddf3b997827c5f76993b766c908fac37ba0/
Threat name:
ByteCode-MSIL.Trojan.Leonem
Create hunting rule
Status:
Malicious
First seen:
2022-10-13 12:27:37 UTC
File Type:
PE (.Net Exe)
Extracted files:
26
AV detection:
20 of 26 (76.92%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=xmy7m77zvcmfuqjeljkayrr5345zs6bhyx3wte5xm3eqr6wdpoqa._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:oi05 rat spyware stealer trojan
Link:
https://tria.ge/reports/221018-h94beaehf6/
Behaviour
Creates scheduled task(s)
Enumerates system info in registry
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Checks computer location settings
Deletes itself
Formbook payload
Formbook
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/ae572dfc-2875-4a15-8173-91b3acb476f0
Unpacked files
SH256 hash:
b13398f344cf3dd0b6fe84d88c660632fb920b5372ae3c6589ee066943701ce2
MD5 hash:
4545769ce5c787ac0bbe1d83ac5f41ac
SHA1 hash:
9bbdb83fcc1e3a6b87155001a7ab2188a9518111
Detections:
FormBook
Create hunting rule
win_formbook_auto
Create hunting rule
win_formbook_g0
Create hunting rule
Link:
https://www.unpac.me/results/abfd3626-10a0-4043-aaa6-8763105cd5f0/
Parent samples :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 hash:
161903f7d5633a0cdc5d416c229e1af16ad3f5a6d11dbe8d500aa9151a273f62
MD5 hash:
b460e7cd67e88a80f0b65f65d28b1c4c
SHA1 hash:
fef017687483cf2b5b9d5f8061b6f0645fdcf779
Link:
https://www.unpac.me/results/abfd3626-10a0-4043-aaa6-8763105cd5f0/
SH256 hash:
269c85db0a36fa1811698f2b0765c89297807a5e16263902ffc0c5c0a3985c1a
MD5 hash:
7cb665e1ccbd99fd5a963f114ac13559
SHA1 hash:
d1c940371be01909cb5f528c7aaca4fa5b00bd95
Link:
https://www.unpac.me/results/abfd3626-10a0-4043-aaa6-8763105cd5f0/
SH256 hash:
af7ac1171b44c9a949ad80bfaf05095048d0b74cfb527f66479e22f47d340110
MD5 hash:
f696dc0e00cb8f70799ac3fcaa5f9f6a
SHA1 hash:
cde2283de5b89639ea52f6388feef8f77efc63ce
Link:
https://www.unpac.me/results/abfd3626-10a0-4043-aaa6-8763105cd5f0/
SH256 hash:
dfd5903b10ce9ab3cef42ace7a80e9489217a853da91b05ed7e652b82355801b
MD5 hash:
035fbc5ef214fe04cf4d76fc94ecf56d
SHA1 hash:
2d0a143526de2be531b98d1b270d8f4acc8aedb7
Link:
https://www.unpac.me/results/abfd3626-10a0-4043-aaa6-8763105cd5f0/
SH256 hash:
bb31f67ff9a8985a41245a540c463ddf3b997827c5f76993b766c908fac37ba0
MD5 hash:
a615ff6ffc21a5ec3891c289d4f0ad06
SHA1 hash:
c75e002876d9c16ac317b9c20c0fb3125f6c6dac
Link:
https://www.unpac.me/results/abfd3626-10a0-4043-aaa6-8763105cd5f0/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/bb31f67ff9a8/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/bb31f67ff9a8985a41245a540c463ddf3b997827c5f76993b766c908fac37ba0

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:meth_get_eip
Create hunting rule
Author:Willi Ballenthin
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.

Malspam

Formbook

Executable exe bb31f67ff9a8985a41245a540c463ddf3b997827c5f76993b766c908fac37ba0

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/321261/

Comments