MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a8d97304d740bb44b27e40303d72326a34d30973e801161f4bf026fff552c1a8. 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: 15


Intelligence 15 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a8d97304d740bb44b27e40303d72326a34d30973e801161f4bf026fff552c1a8
SHA3-384 hash: a3372c85c3a024c29d79c1e3daa741173de3d08eb11547118f3fad44e3b94847e6b8f7022e23df6070db3cf4756ea04b
SHA1 hash: 3c803edc8f87f3c69c460ccf1255ed8c9c1651f6
MD5 hash: dc86d8c67a66d23d6cba86036dacd475
humanhash: jupiter-papa-louisiana-paris
File name:dc86d8c67a66d23d6cba86036dacd475.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:2'173'952 bytes
First seen:2022-11-28 17:18:27 UTC
Last seen:2022-11-28 19:33:15 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'661 x AgentTesla, 19'474 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 24576:MuOolI+AqJiMqbPf8/cEnn8jrO+jfn2QaRgRBmjb+Ba56r19EvAI3eQFZ:x3Aq0U/cbjjL2Q+gRBKyq6r19mAI3RF
TLSH T170A59C6D993EA199F3FF83D40A95664B29422952E9DEC1932C8BC090DD073F1F479B83
TrID 71.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.2% (.EXE) Win64 Executable (generic) (10523/12/4)
6.3% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.3% (.EXE) Win32 Executable (generic) (4505/5/1)
2.0% (.ICL) Windows Icons Library (generic) (2059/9)
Reporter abuse_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
291
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
dc86d8c67a66d23d6cba86036dacd475.exe
Verdict:
Malicious activity
Analysis date:
2022-11-28 17:20:36 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/ed05f6f2-a77f-4afd-a299-947dba941b2d

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/339513/
Detection(s):
SecuriteInfo.com.Win32.RATX-gen.32747.25709.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Сreating synchronization primitives
Launching a process
Creating a process with a hidden window
Sending a custom TCP request
Creating a file in the %AppData% directory
Unauthorized injection to a recently created process
Creating a file
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Link:
https://www.filescan.io/uploads/6384ed8a090ea3f04934c055/reports/0e702859-4a3b-48c4-a052-75bac1562f63/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
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Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/18719941-6389-4bd6-a942-2ccc97529a0a
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1122753
Signature
.NET source code contains potential unpacker
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Encrypted powershell cmdline option found
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)
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
Tries to detect virtualization through RDTSC time measurements
Uses netstat to query active network connections and open ports
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 755479 Sample: M7HaYj7bWn.exe Startdate: 28/11/2022 Architecture: WINDOWS Score: 100 60 Malicious sample detected (through community Yara rule) 2->60 62 Antivirus detection for URL or domain 2->62 64 Multi AV Scanner detection for submitted file 2->64 66 5 other signatures 2->66 10 M7HaYj7bWn.exe 1 4 2->10         started        process3 file4 54 C:\Users\user\AppData\Roaming\gedata.exe, PE32 10->54 dropped 56 C:\Users\user\...\gedata.exe:Zone.Identifier, ASCII 10->56 dropped 58 C:\Users\user\AppData\...\M7HaYj7bWn.exe.log, ASCII 10->58 dropped 90 Encrypted powershell cmdline option found 10->90 92 Tries to detect virtualization through RDTSC time measurements 10->92 14 M7HaYj7bWn.exe 10->14         started        17 powershell.exe 15 10->17         started        19 M7HaYj7bWn.exe 10->19         started        signatures5 process6 signatures7 94 Modifies the context of a thread in another process (thread injection) 14->94 96 Maps a DLL or memory area into another process 14->96 98 Sample uses process hollowing technique 14->98 100 Queues an APC in another process (thread injection) 14->100 21 explorer.exe 3 14->21 injected 24 conhost.exe 17->24         started        process8 signatures9 74 Uses netstat to query active network connections and open ports 21->74 26 gedata.exe 2 21->26         started        29 gedata.exe 1 21->29         started        31 NETSTAT.EXE 21->31         started        33 2 other processes 21->33 process10 signatures11 76 Multi AV Scanner detection for dropped file 26->76 78 Machine Learning detection for dropped file 26->78 80 Encrypted powershell cmdline option found 26->80 35 gedata.exe 26->35         started        38 powershell.exe 15 26->38         started        82 Injects a PE file into a foreign processes 29->82 40 gedata.exe 29->40         started        42 powershell.exe 29->42         started        44 gedata.exe 29->44         started        84 Modifies the context of a thread in another process (thread injection) 31->84 86 Maps a DLL or memory area into another process 31->86 88 Tries to detect virtualization through RDTSC time measurements 31->88 46 cmd.exe 31->46         started        process12 signatures13 68 Modifies the context of a thread in another process (thread injection) 35->68 70 Maps a DLL or memory area into another process 35->70 72 Sample uses process hollowing technique 35->72 48 conhost.exe 38->48         started        50 conhost.exe 42->50         started        52 conhost.exe 46->52         started        process14
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/a8d97304d740bb44b27e40303d72326a34d30973e801161f4bf026fff552c1a8/
Threat name:
Win32.Trojan.Nekark
Create hunting rule
Status:
Malicious
First seen:
2022-11-28 17:19:30 UTC
File Type:
PE (.Net Exe)
Extracted files:
1
AV detection:
22 of 26 (84.62%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=vdmxgbgxic5ujmt6iayd24rsni2ngclt5aarmh2l6atp75ksygua._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
masslogger
Create hunting rule
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:do25 persistence rat spyware stealer trojan
Link:
https://tria.ge/reports/221128-vvtvmsbg75/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Adds Run key to start application
Checks computer location settings
Formbook payload
Formbook
Unpacked files
SH256 hash:
82a2dfd273479688503f272b2c2f8e6bd70d9b26b4669f9f707beabdf3083aee
MD5 hash:
14b4cc16d95ade150d6c87df04a099f2
SHA1 hash:
20d319041ef4814bb111e0ecd925fc14a2ee6c23
Detections:
FormBook
Create hunting rule
win_formbook_auto
Create hunting rule
win_formbook_g0
Create hunting rule
Link:
https://www.unpac.me/results/ae164cb1-3c59-482b-9c47-cf84555f09e5/
Parent samples :
a8d97304d740bb44b27e40303d72326a34d30973e801161f4bf026fff552c1a8
56462c46e025fb1ddfe7793825dbde4130e9db4052b271f21b60069efeba96f6
SH256 hash:
e1289029d3aeda3cc176e48e21b11a4cfc0b3dafbf15c006c517a7bf37806b69
MD5 hash:
c3b0016da23c693e387d022e4102253a
SHA1 hash:
581766cefd526a45627af0e086fed074d49e0e4b
Link:
https://www.unpac.me/results/ae164cb1-3c59-482b-9c47-cf84555f09e5/
SH256 hash:
a8d97304d740bb44b27e40303d72326a34d30973e801161f4bf026fff552c1a8
MD5 hash:
dc86d8c67a66d23d6cba86036dacd475
SHA1 hash:
3c803edc8f87f3c69c460ccf1255ed8c9c1651f6
Link:
https://www.unpac.me/results/ae164cb1-3c59-482b-9c47-cf84555f09e5/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/a8d97304d740/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/a8d97304d740bb44b27e40303d72326a34d30973e801161f4bf026fff552c1a8

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:BitcoinAddress
Create hunting rule
Author:Didier Stevens (@DidierStevens)
Description:Contains a valid Bitcoin address
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.

Web download

Formbook

Executable exe a8d97304d740bb44b27e40303d72326a34d30973e801161f4bf026fff552c1a8

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/2435927/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/339513/

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