MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b54b6ef71478646451ca1905b93c380141b4df637d73cb796af0a391ba47f43e. 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: 16


Intelligence 16 IOCs YARA 6 File information Comments
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SHA256 hash: b54b6ef71478646451ca1905b93c380141b4df637d73cb796af0a391ba47f43e
SHA3-384 hash: 07d7bf05457de25d98d428a7c052cb19a6b65476505c83a942aaf687f80363262f951ec3d4a4339f56815ffaa540e8b6
SHA1 hash: f091fd2f772d7c566bcce4c046323ef02808f2da
MD5 hash: 25369cacd15fd28391f08b48ad5fdf4d
humanhash: asparagus-eight-william-november
File name:file.exe
Download: download sample
Signature Formbook
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File size:760'320 bytes
First seen:2024-12-20 14:58:54 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'650 x AgentTesla, 19'462 x Formbook, 12'203 x SnakeKeylogger)
ssdeep 12288:ZjlIpHtMPku+l0CPPlzYUDbl3H7WZiga3jtuAEzY69hbnrF65FO28EYT/0:ZjlIhSPd+plzYu3+UuAEzY0h3FfxECs
TLSH T1AFF4CFC03F2A7701DEACB934853AEDB862551E74B004B9F36EED2B57B599112AE1CF40
TrID 71.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.2% (.EXE) Win64 Executable (generic) (10522/11/4)
6.3% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.3% (.EXE) Win32 Executable (generic) (4504/4/1)
2.0% (.ICL) Windows Icons Library (generic) (2059/9)
Magika pebin
File icon (PE):PE icon
dhash icon f0cc862b23b2ccf0 (8 x Formbook, 2 x DarkCloud, 1 x VIPKeylogger)
Reporter abuse_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
369
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
formbook
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ID:
1
File name:
file.exe
Verdict:
Malicious activity
Analysis date:
2024-12-20 15:02:59 UTC
Tags:
formbook xloader
Link:
https://app.any.run/tasks/e44fe7a4-b7b3-4cb2-bc6c-59f78f0467f2

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
Win.Packed.Generic-10039123-0
Create hunting rule

Verdict:
Malicious
Score:
99.1%
Link:
https://cyber-fortress.com/docs/result/index.php?id=676586418a4d48ee35fd5c82
Tags:
virus msil
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Launching a process
Сreating synchronization primitives
Launching cmd.exe command interpreter
Setting browser functions hooks
Unauthorized injection to a system process
Unauthorized injection to a browser process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
formbook packed packed packer_detected stealer
Link:
https://www.filescan.io/uploads/6765863c8134167603962aec/reports/0e6720ad-d755-4a29-99ef-17356c8bde92/overview
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/b54b6ef71478646451ca1905b93c380141b4df637d73cb796af0a391ba47f43e
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/a5905357-6207-47d6-b910-34b9cef63f48
Result
Threat name:
FormBook
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Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1578871
Signature
.NET source code contains potential unpacker
AI detected suspicious sample
Antivirus / Scanner detection for submitted sample
C2 URLs / IPs found in malware configuration
Found direct / indirect Syscall (likely to bypass EDR)
Found malware configuration
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
Suricata IDS alerts for network traffic
Switches to a custom stack to bypass stack traces
System process connects to network (likely due to code injection or exploit)
Tries to detect virtualization through RDTSC time measurements
Tries to resolve many domain names, but no domain seems valid
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1578871 Sample: file.exe Startdate: 20/12/2024 Architecture: WINDOWS Score: 100 31 www.utties.xyz 2->31 33 www.ompaz.xyz 2->33 35 10 other IPs or domains 2->35 39 Suricata IDS alerts for network traffic 2->39 41 Found malware configuration 2->41 43 Malicious sample detected (through community Yara rule) 2->43 47 9 other signatures 2->47 11 file.exe 3 2->11         started        signatures3 45 Performs DNS queries to domains with low reputation 33->45 process4 file5 29 C:\Users\user\AppData\Local\...\file.exe.log, ASCII 11->29 dropped 59 Tries to detect virtualization through RDTSC time measurements 11->59 61 Switches to a custom stack to bypass stack traces 11->61 15 file.exe 11->15         started        signatures6 process7 signatures8 63 Modifies the context of a thread in another process (thread injection) 15->63 65 Maps a DLL or memory area into another process 15->65 67 Sample uses process hollowing technique 15->67 69 2 other signatures 15->69 18 explorer.exe 89 1 15->18 injected process9 dnsIp10 37 emi.wtf 3.33.130.190, 49807, 80 AMAZONEXPANSIONGB United States 18->37 49 System process connects to network (likely due to code injection or exploit) 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 57 Switches to a custom stack to bypass stack traces 22->57 25 cmd.exe 1 22->25         started        process14 process15 27 conhost.exe 25->27         started       
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/b54b6ef71478646451ca1905b93c380141b4df637d73cb796af0a391ba47f43e
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/b54b6ef71478646451ca1905b93c380141b4df637d73cb796af0a391ba47f43e/
Threat name:
ByteCode-MSIL.Backdoor.FormBook
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Status:
Malicious
First seen:
2024-12-13 04:20:02 UTC
File Type:
PE (.Net Exe)
Extracted files:
10
AV detection:
20 of 23 (86.96%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=wvfw55yupbsgiuokdec3spbyafa3jx3dpvz4w6lk6crzdosh6q7a._file
Verdict:
malicious
Label(s):
formbook
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unknown_loader_037
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Similar samples:
error
Formbook
Result
Malware family:
formbook
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Score:
  10/10
Tags:
family:formbook campaign:gd04 discovery rat spyware stealer trojan
Link:
https://tria.ge/reports/241220-scqn6axqbw/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Deletes itself
Formbook payload
Formbook
Formbook family
Verdict:
Unknown
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/36010b90-b619-424c-a72e-6a4e9e3d4177
Unpacked files
SH256 hash:
2ec49059327cf3e55753f29114bc64385a43dc3b5bf38dcab7d24bdc367c4060
MD5 hash:
889c1b7d79cf0f92b151045d6d1c737c
SHA1 hash:
7dd00f5171b43c06e708f083fb60baebf32188f0
Detections:
FormBook
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win_formbook_auto
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win_formbook_g0
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win_formbook_w0
Create hunting rule
Windows_Trojan_Formbook
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Formbook
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Link:
https://www.unpac.me/results/bae96d7d-56bf-41a4-b471-c4d886dbf34f/
Parent samples :
bb2a13c3f2f32551b00c4173f0cb5baf28cdadf76e4e6b531885a162f7c310c6
b54b6ef71478646451ca1905b93c380141b4df637d73cb796af0a391ba47f43e
c2d348685fd22dd3ef1f9c245e4f6d184ab457cc0f38ec7bf23b414a9f937457
9f184a39f058cdf0d50fd15f34eb5b7f5d1421db80cb91d9efc829da9d9515e4
SH256 hash:
0ebbf27cd564540176a22dba72ea0b5eb0818d58cac460601912a45cb20348bf
MD5 hash:
95675169a881adfde79dc039f10872f9
SHA1 hash:
f806e4a8f70c174c699286f6247b9c1dcf780531
Detections:
SUSP_OBF_NET_ConfuserEx_Name_Pattern_Jan24
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SUSP_OBF_NET_Reactor_Indicators_Jan24
Create hunting rule
Link:
https://www.unpac.me/results/bae96d7d-56bf-41a4-b471-c4d886dbf34f/
SH256 hash:
366cfb2015078d80637bad5e41ba879903fafc17fe6d24d74210fbbfeaa07bd6
MD5 hash:
6c6509adcd386e5aa612f7a9c3d8a04b
SHA1 hash:
d36a9e2f20a88d035da9f976ba551358cbb3f913
Link:
https://www.unpac.me/results/bae96d7d-56bf-41a4-b471-c4d886dbf34f/
SH256 hash:
b54b6ef71478646451ca1905b93c380141b4df637d73cb796af0a391ba47f43e
MD5 hash:
25369cacd15fd28391f08b48ad5fdf4d
SHA1 hash:
f091fd2f772d7c566bcce4c046323ef02808f2da
Link:
https://www.unpac.me/results/bae96d7d-56bf-41a4-b471-c4d886dbf34f/
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:NET
Create hunting rule
Author:malware-lu
Rule name:NETexecutableMicrosoft
Create hunting rule
Author:malware-lu
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
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Author:Skystars LightDefender
Description:imphash
Rule name:Sus_Obf_Enc_Spoof_Hide_PE
Create hunting rule
Author:XiAnzheng
Description:Check for Overlay, Obfuscating, Encrypting, Spoofing, Hiding, or Entropy Technique(can create FP)

File information

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

BLint

The following table provides more information about this file using BLint. BLint is a Binary Linter to check the security properties, and capabilities in executables.

Findings
IDTitleSeverity
CHECK_AUTHENTICODEMissing Authenticodehigh
CHECK_DLL_CHARACTERISTICSMissing dll Security Characteristics (HIGH_ENTROPY_VA)high

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