MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a7492a3e2caa18c09290209462772d7356966ed9fe91f86830284d950604b300. 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 7 File information Comments
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SHA256 hash: a7492a3e2caa18c09290209462772d7356966ed9fe91f86830284d950604b300
SHA3-384 hash: 61ec095a5fc15df7f69ea624fa4451a3bcbe75f727023922b7f6f1198cf581940e5bffca5bfa71aefb471d6e512b9ce3
SHA1 hash: 4df1a667d1c7de90a5492146b92ffbb667d689a2
MD5 hash: 48d4eafd1412fe11e58cb6778be9a6cc
humanhash: one-yellow-mexico-kilo
File name:48d4eafd1412fe11e58cb6778be9a6cc.exe
Download: download sample
Signature Formbook
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File size:291'864 bytes
First seen:2022-06-21 14:59:21 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 6144:F0Pd+AtHQkX9olfs+HvJ9WlNHblt5fkR9lVmUIynrbDSrFYE:q+q59oNvnWlNHpvfkPD3DAp
TLSH T1F554D02BB7988B00C4592576C4EF043013E9BED6BA33E3753E4D6BD85D423A29D0978E
TrID 52.5% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
22.4% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13)
7.5% (.EXE) Win64 Executable (generic) (10523/12/4)
4.7% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
3.6% (.EXE) Win16 NE executable (generic) (5038/12/1)
Reporter abuse_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
219
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
formbook
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ID:
1
File name:
PO1286482.xlsx
Verdict:
Malicious activity
Analysis date:
2022-06-21 18:01:27 UTC
Tags:
encrypted opendir exploit CVE-2017-11882 loader formbook trojan stealer
Link:
https://app.any.run/tasks/48323e05-3c53-4bc8-8f6d-75cebe0a31a8

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Formbook
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Link:
https://www.capesandbox.com/analysis/282018/
Detection(s):
SecuriteInfo.com.W32.AIDetectNet.01.7801.28219.UNOFFICIAL
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Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file
Forced shutdown of a system process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
obfuscated overlay packed
Link:
https://www.filescan.io/uploads/62b1dd36f4dd1ffb77a8d2bb/reports/f803f27b-418b-4437-a532-bc0136c87444/overview
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.
Malware family:
Formbook
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Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/546fa268-7c34-40c7-b51c-a92d5fbffb9f
Result
Threat name:
FormBook
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Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1017266
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code references suspicious native API functions
Allocates memory in foreign processes
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent)
Injects a PE file into a foreign processes
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 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
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 649771 Sample: 7zWU13ZU7l.exe Startdate: 21/06/2022 Architecture: WINDOWS Score: 100 36 Snort IDS alert for network traffic 2->36 38 Malicious sample detected (through community Yara rule) 2->38 40 Antivirus detection for URL or domain 2->40 42 6 other signatures 2->42 10 7zWU13ZU7l.exe 1 2->10         started        process3 file4 28 C:\Users\user\AppData\...\7zWU13ZU7l.exe.log, ASCII 10->28 dropped 52 Writes to foreign memory regions 10->52 54 Allocates memory in foreign processes 10->54 56 Injects a PE file into a foreign processes 10->56 58 Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent) 10->58 14 cvtres.exe 10->14         started        signatures5 process6 signatures7 60 Modifies the context of a thread in another process (thread injection) 14->60 62 Maps a DLL or memory area into another process 14->62 64 Sample uses process hollowing technique 14->64 66 2 other signatures 14->66 17 explorer.exe 14->17 injected process8 dnsIp9 30 www.mecontaisso.com 103.224.212.221, 49788, 80 TRELLIAN-AS-APTrellianPtyLimitedAU Australia 17->30 32 www.thesulkies.com 134.73.220.108, 49787, 80 LAYER-HOSTUS United States 17->32 34 8 other IPs or domains 17->34 44 System process connects to network (likely due to code injection or exploit) 17->44 21 cscript.exe 17->21         started        signatures10 process11 signatures12 46 Modifies the context of a thread in another process (thread injection) 21->46 48 Maps a DLL or memory area into another process 21->48 50 Tries to detect virtualization through RDTSC time measurements 21->50 24 cmd.exe 1 21->24         started        process13 process14 26 conhost.exe 24->26         started       
Detection:
xloader
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Link:
https://mwdb.cert.pl/sample/a7492a3e2caa18c09290209462772d7356966ed9fe91f86830284d950604b300/
Threat name:
ByteCode-MSIL.Spyware.Noon
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Status:
Malicious
First seen:
2022-06-21 12:59:32 UTC
File Type:
PE (.Net Exe)
Extracted files:
1
AV detection:
16 of 26 (61.54%)
Threat level:
  2/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=u5esuprmvimmbeuqeckge5znonljm3wz72i7q2bqfbgzkbqewmaa._file
Verdict:
malicious
Label(s):
formbook
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Result
Malware family:
xloader
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Score:
  10/10
Tags:
family:formbook family:xloader campaign:zgtb loader persistence rat spyware stealer suricata trojan
Link:
https://tria.ge/reports/220621-sdapbsghe6/
Behaviour
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
System policy modification
Modifies Internet Explorer settings
Suspicious behavior: EnumeratesProcesses
Drops file in Program Files directory
Suspicious use of SetThreadContext
Reads user/profile data of web browsers
Adds policy Run key to start application
Blocklisted process makes network request
Xloader Payload
Formbook
Xloader
suricata: ET MALWARE FormBook CnC Checkin (GET)
Unpacked files
SH256 hash:
db5c1a93488f3b71dccf8cea522deaba29785814ce303d78a484d0cea3ff2256
MD5 hash:
52d1fd75166ed7884d3e9fb9a3996d1a
SHA1 hash:
5399e8200e3caf70dfe908588fb1331cc05c050b
Link:
https://www.unpac.me/results/87ebbc11-0ccf-4562-8830-bd1d348b7e76/
SH256 hash:
4c225ce05701dc7a5191207bbaaeebfe27fd8f6ae8d8171842e6a60ac3afccde
MD5 hash:
fcc02cdc0f599bd244e118a5fc710abb
SHA1 hash:
1dddbd0c7bfdc3343358c51528ede1f35ddb32c3
Detections:
win_formbook_g0
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win_formbook_auto
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Link:
https://www.unpac.me/results/87ebbc11-0ccf-4562-8830-bd1d348b7e76/
Parent samples :
04e6039e29e0b8f6fb1ec1502a3225c74c4c18f6c0ba1ce10eb2c834ede7f149
a7492a3e2caa18c09290209462772d7356966ed9fe91f86830284d950604b300
17c2bc113099a0d8287c5aeeb76dc5386333256ca8245d2da83a8749bef1d350
0b3fffd1de700b6d54df6bd954e66c523292484ce0686fb0ae5750b57734a0dd
112c01d48613316c5620071a1d3900e798d7421445b1a5174b2a56c228c5c3c2
7d850c7483817ae91c6b6dde59c22141b754d04ec2e0985ffcd85b08f2e9ae58
b47cf0eaed7e3798e77eaf01aac5783f2c03f7db7802a5215523d4ccdc631bc5
SH256 hash:
a7492a3e2caa18c09290209462772d7356966ed9fe91f86830284d950604b300
MD5 hash:
48d4eafd1412fe11e58cb6778be9a6cc
SHA1 hash:
4df1a667d1c7de90a5492146b92ffbb667d689a2
Link:
https://www.unpac.me/results/87ebbc11-0ccf-4562-8830-bd1d348b7e76/
Malware family:
XLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/a7492a3e2caa/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Legit
Score:
0.00
Link:
https://yomi.yoroi.company/submissions/a7492a3e2caa18c09290209462772d7356966ed9fe91f86830284d950604b300

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:exploit_any_poppopret
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Author:Jeff White [karttoon@gmail.com] @noottrak
Description:Identify POP -> POP -> RET opcodes for quick ROP Gadget creation in target binaries.
Rule name:malware_Formbook_strings
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect Formbook in memory
Reference:internal research
Rule name:meth_get_eip
Create hunting rule
Author:Willi Ballenthin
Rule name:meth_stackstrings
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
Rule name:win_formbook_auto
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Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:Detects win.formbook.

File information

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

Web download

Formbook

Executable exe a7492a3e2caa18c09290209462772d7356966ed9fe91f86830284d950604b300

(this sample)

Cape
Cape
https://www.capesandbox.com/analysis/282018/
  
URLhaus
https://urlhaus.abuse.ch/url/2246291/
  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/2246361/

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