MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b4a7371bb84b4f72e390e8f247a7978f2c2ff173d555261442151ef918cdb969. 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
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SHA256 hash: b4a7371bb84b4f72e390e8f247a7978f2c2ff173d555261442151ef918cdb969
SHA3-384 hash: 8220632dc4c1fa0147963bf4535731ef2a1d0e6b8c8cf8cbf059d687ddd8587dd96ef87ec378c3b696ce8428b86fd15f
SHA1 hash: 7feda5387f15dd58f5479184c698811fd829604e
MD5 hash: 389205cb7d0e4aff8ced73933cb8c540
humanhash: washington-monkey-diet-quebec
File name:ur0Wh1IXZqT3XDP.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:506'880 bytes
First seen:2022-07-22 12:27:18 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'663 x AgentTesla, 19'478 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 12288:tuz2iNVsuviTL1M4QWYcNoz8rXjrgvB4QOtE:U1HsHTafcNEIj09
TLSH T180B4CF00F7E9C0A9F8F74FB82FF5A46166AEF991142DF1BD0AA01D5E0621F408A51B77
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)
Reporter GovCERT_CH
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
349
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
formbook
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ID:
1
File name:
ur0Wh1IXZqT3XDP.exe
Verdict:
Malicious activity
Analysis date:
2022-07-22 12:31:23 UTC
Tags:
formbook trojan stealer
Link:
https://app.any.run/tasks/b40aba14-39fb-422d-b662-6e13936c7545

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/293408/
Detection(s):
SecuriteInfo.com.MSIL.Kryptik.WZA.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Sending a custom TCP request
Unauthorized injection to a recently created process
Creating a file
Сreating synchronization primitives
Searching for synchronization primitives
Launching cmd.exe command interpreter
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
fareit packed
Link:
https://www.filescan.io/uploads/62da97d60e298a94f3ed94cb/reports/e1daa641-d094-4254-a721-c5895c573650/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/f9d7f603-9579-479a-8ec6-e6b54227beeb
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1039236
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code contains very large strings
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
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
Performs DNS queries to domains with low reputation
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
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
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 671730 Sample: ur0Wh1IXZqT3XDP.exe Startdate: 22/07/2022 Architecture: WINDOWS Score: 100 31 www.changshengchuangfu2.xyz 2->31 39 Malicious sample detected (through community Yara rule) 2->39 41 Antivirus detection for URL or domain 2->41 43 Multi AV Scanner detection for submitted file 2->43 45 8 other signatures 2->45 11 ur0Wh1IXZqT3XDP.exe 3 2->11         started        signatures3 process4 file5 29 C:\Users\user\...\ur0Wh1IXZqT3XDP.exe.log, ASCII 11->29 dropped 57 Tries to detect virtualization through RDTSC time measurements 11->57 59 Injects a PE file into a foreign processes 11->59 15 ur0Wh1IXZqT3XDP.exe 11->15         started        signatures6 process7 signatures8 61 Modifies the context of a thread in another process (thread injection) 15->61 63 Maps a DLL or memory area into another process 15->63 65 Sample uses process hollowing technique 15->65 67 Queues an APC in another process (thread injection) 15->67 18 explorer.exe 15->18 injected process9 dnsIp10 33 crsogigov.xyz 157.90.176.32, 49782, 80 REDIRISRedIRISAutonomousSystemES United States 18->33 35 www.crsogigov.xyz 18->35 37 www.anorealm.com 18->37 47 System process connects to network (likely due to code injection or exploit) 18->47 49 Performs DNS queries to domains with low reputation 18->49 22 svchost.exe 18->22         started        signatures11 process12 signatures13 51 Modifies the context of a thread in another process (thread injection) 22->51 53 Maps a DLL or memory area into another process 22->53 55 Tries to detect virtualization through RDTSC time measurements 22->55 25 cmd.exe 1 22->25         started        process14 process15 27 conhost.exe 25->27         started       
Detection:
formbook
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Link:
https://mwdb.cert.pl/sample/b4a7371bb84b4f72e390e8f247a7978f2c2ff173d555261442151ef918cdb969/
Threat name:
ByteCode-MSIL.Spyware.SnakeLogger
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Status:
Malicious
First seen:
2022-07-22 09:43:29 UTC
File Type:
PE (.Net Exe)
Extracted files:
7
AV detection:
22 of 26 (84.62%)
Threat level:
  2/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=wsttog5yjnhxfy4q5dzepj4xr4wc74lt2vksmfcccuppsggnxfuq._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:zzun loader persistence rat spyware stealer suricata trojan
Link:
https://tria.ge/reports/220722-pnbgtsfchp/
Behaviour
Modifies Internet Explorer settings
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
Drops file in Program Files directory
Suspicious use of SetThreadContext
Adds Run key to start application
Checks computer location settings
Deletes itself
Reads user/profile data of web browsers
Executes dropped EXE
Xloader payload
Formbook
Xloader
suricata: ET MALWARE FormBook CnC Checkin (GET)
Unpacked files
SH256 hash:
ee9ec9235d458bb33e41db184aa746585f7527f05d4aaa83717128e88c7670bf
MD5 hash:
a4668905f7f49315c266e588c0d01b14
SHA1 hash:
f5495dd27a3fd03c33e7ac38f26d944d14217804
Detections:
win_formbook_g0
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win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/af6649b9-5dac-4e52-9819-b76c4bd2165a/
Parent samples :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 hash:
5e97ccd8dafcb36b3cb772f6a2fd425abcf221ab9ea1930e8c2618c95332f2c6
MD5 hash:
01800f6b045def8d90c649842f56d752
SHA1 hash:
f8434a4636d0772d01aac44bb3f9753a41f01d34
Link:
https://www.unpac.me/results/af6649b9-5dac-4e52-9819-b76c4bd2165a/
SH256 hash:
e6c328b547dcecef826e94c7239c016d93258234ed93a01e3dad2852a065e0e2
MD5 hash:
df409c9ed060f55d56230a420cf7b1ba
SHA1 hash:
a9e087cdb49cfedd62c996f817c62c2e51b1f6c5
Link:
https://www.unpac.me/results/af6649b9-5dac-4e52-9819-b76c4bd2165a/
SH256 hash:
b4a7371bb84b4f72e390e8f247a7978f2c2ff173d555261442151ef918cdb969
MD5 hash:
389205cb7d0e4aff8ced73933cb8c540
SHA1 hash:
7feda5387f15dd58f5479184c698811fd829604e
Link:
https://www.unpac.me/results/af6649b9-5dac-4e52-9819-b76c4bd2165a/
Malware family:
XLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/b4a7371bb84b/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/b4a7371bb84b4f72e390e8f247a7978f2c2ff173d555261442151ef918cdb969

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
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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 b4a7371bb84b4f72e390e8f247a7978f2c2ff173d555261442151ef918cdb969

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/293408/

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