MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b61654d4440ff18d10ad8a7425493946063c79e233aef6e97d8b6c20d092bda2. 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 2 File information Comments
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SHA256 hash: b61654d4440ff18d10ad8a7425493946063c79e233aef6e97d8b6c20d092bda2
SHA3-384 hash: c03ebb504832deb0f393ca409366507e1f82b34ea85a82d3613a8c05d34168d7b47ae69c53cc0953749fead116111188
SHA1 hash: df2261c450ef882338e09310c7d3b3b21d76479a
MD5 hash: 61fd0b434aea06bc1d0a9d2e9cae9a93
humanhash: blossom-friend-cat-uniform
File name:X4Tu5IWZiaomy5r.exe
Download: download sample
Signature Formbook
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File size:696'832 bytes
First seen:2023-01-02 17:36:19 UTC
Last seen:2023-01-15 13:53:18 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'653 x AgentTesla, 19'464 x Formbook, 12'205 x SnakeKeylogger)
ssdeep 12288:siaSUk7IoMR0t+5w8TWnRHpJnVgM0Hc5h5hivTsM5oRjQx3:siaSUijjfU4RHdhSc5his4QE
TLSH T148E49E567A41E2A1F389327FB2303C1581B03A52E8F2F57A4E75B89776C364BC64247B
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 lowmal3
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
3
# of downloads :
182
Origin country :
DE DE
Vendor Threat Intelligence
Malware family:
formbook
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ID:
1
File name:
X4Tu5IWZiaomy5r.exe
Verdict:
Malicious activity
Analysis date:
2023-01-02 17:38:48 UTC
Tags:
formbook xloader
Link:
https://app.any.run/tasks/251afe4f-8f48-4158-9a51-8c5e60ad2eb0

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Win32.PWSX-gen.20982.1526.UNOFFICIAL
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Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a custom TCP request
Сreating synchronization primitives
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Adding an access-denied ACE
Creating a process from a recently created file
Creating a process with a hidden window
Creating a file in the %temp% directory
Launching a process
Unauthorized injection to a recently created process
Creating a file
Launching cmd.exe command interpreter
Enabling autorun by creating a file
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/63b316402b1f5b0e511a4fed/reports/0b8be3c7-3576-44fe-b4b6-b4d08beb8e98/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/a6052995-fa7c-4bc6-841c-db37332601b4
Result
Threat name:
FormBook
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Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1144238
Signature
.NET source code contains potential unpacker
Adds a directory exclusion to Windows Defender
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
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
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: 776968 Sample: X4Tu5IWZiaomy5r.exe Startdate: 02/01/2023 Architecture: WINDOWS Score: 100 66 Malicious sample detected (through community Yara rule) 2->66 68 Antivirus detection for URL or domain 2->68 70 Sigma detected: Scheduled temp file as task from temp location 2->70 72 8 other signatures 2->72 10 X4Tu5IWZiaomy5r.exe 7 2->10         started        14 kFfBVx.exe 5 2->14         started        process3 file4 48 C:\Users\user\AppData\Roaming\kFfBVx.exe, PE32 10->48 dropped 50 C:\Users\user\...\kFfBVx.exe:Zone.Identifier, ASCII 10->50 dropped 52 C:\Users\user\AppData\Local\...\tmpF2C6.tmp, XML 10->52 dropped 54 C:\Users\user\...\X4Tu5IWZiaomy5r.exe.log, ASCII 10->54 dropped 80 Uses schtasks.exe or at.exe to add and modify task schedules 10->80 82 Adds a directory exclusion to Windows Defender 10->82 84 Tries to detect virtualization through RDTSC time measurements 10->84 16 X4Tu5IWZiaomy5r.exe 10->16         started        19 powershell.exe 19 10->19         started        21 schtasks.exe 1 10->21         started        23 X4Tu5IWZiaomy5r.exe 10->23         started        86 Multi AV Scanner detection for dropped file 14->86 88 Machine Learning detection for dropped file 14->88 25 kFfBVx.exe 14->25         started        27 schtasks.exe 1 14->27         started        signatures5 process6 signatures7 58 Modifies the context of a thread in another process (thread injection) 16->58 60 Maps a DLL or memory area into another process 16->60 62 Sample uses process hollowing technique 16->62 64 Queues an APC in another process (thread injection) 16->64 29 explorer.exe 16->29 injected 33 conhost.exe 19->33         started        35 conhost.exe 21->35         started        37 conhost.exe 27->37         started        process8 dnsIp9 56 www.cleaning-services-66938.com 185.53.179.92, 49699, 80 TEAMINTERNET-ASDE Germany 29->56 90 System process connects to network (likely due to code injection or exploit) 29->90 39 msiexec.exe 29->39         started        42 colorcpl.exe 29->42         started        signatures10 process11 signatures12 74 Modifies the context of a thread in another process (thread injection) 39->74 76 Maps a DLL or memory area into another process 39->76 44 cmd.exe 1 39->44         started        78 Tries to detect virtualization through RDTSC time measurements 42->78 process13 process14 46 conhost.exe 44->46         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/b61654d4440ff18d10ad8a7425493946063c79e233aef6e97d8b6c20d092bda2/
Threat name:
ByteCode-MSIL.Trojan.FormBook
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Status:
Malicious
First seen:
2023-01-02 15:55:12 UTC
File Type:
PE (.Net Exe)
Extracted files:
12
AV detection:
18 of 26 (69.23%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=wylfjvceb7yy2efnrj2cksjziyddy6pcgoxpn2l5rnwcbuesxwra._file
Verdict:
malicious
Label(s):
formbook
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Result
Malware family:
formbook
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Score:
  10/10
Tags:
family:formbook campaign:ft63 rat spyware stealer trojan
Link:
https://tria.ge/reports/230102-v65raafa43/
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Checks computer location settings
Blocklisted process makes network request
Formbook payload
Formbook
Unpacked files
SH256 hash:
4846b4143d580b4ed2de34e4d0166c97afbec46c3d80df662f14905f64f4fcac
MD5 hash:
a9d4284cde3adf98cc2c1694fd22716d
SHA1 hash:
6b26d4b8eb4e681bf9af3399c18567843d4a3243
Detections:
FormBook
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win_formbook_auto
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win_formbook_g0
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Link:
https://www.unpac.me/results/f5fa41d5-5e92-462e-a17e-6a3e69fb4977/
Parent samples :
67695470958912e6724c51eed1dc8b996b91bc926c3e0428a3d0637c6ed2ba53
86c095bb19bc65eed3cd2edeb97ec3101b10818086329f7c6e6431ac67dcbd8b
b61654d4440ff18d10ad8a7425493946063c79e233aef6e97d8b6c20d092bda2
5f5226121b1e4d48d04118b8734712ca4ee19a584dc14494fe1bf72fafd80558
SH256 hash:
fc6485350cf55dc14ecbfd9b91b7a9979f61023b4104101e9f351caa6c73abaa
MD5 hash:
6c3fdb2b5d93cf814ea1b6ca05a0efcf
SHA1 hash:
f8ae5f9fa1c9b6b0e47b2f0873d2ee3373e0ebf5
Link:
https://www.unpac.me/results/f5fa41d5-5e92-462e-a17e-6a3e69fb4977/
SH256 hash:
fffb0765c769c99982702107ab952b4656b8fce3f641a83c13505e5f6bd1bfb0
MD5 hash:
cc5837c3df35a422872b970b470a9494
SHA1 hash:
f4df74b2ab99f7e76d4240f4044b3f8340ad6efa
Link:
https://www.unpac.me/results/f5fa41d5-5e92-462e-a17e-6a3e69fb4977/
SH256 hash:
cc238835c80d738a249187157509782095ad21db248d98cb88160163f9905cca
MD5 hash:
311c5b6695158047a112817588ffaceb
SHA1 hash:
63f26ee345f56d0c96e4172887bda931ca2b4d6a
Link:
https://www.unpac.me/results/f5fa41d5-5e92-462e-a17e-6a3e69fb4977/
SH256 hash:
ff1b42ea7d56a37eae801adbddb7116f52a4664c0b41302736f522852edc2747
MD5 hash:
89ac57478044c57c7195943116a521e0
SHA1 hash:
1ff2bafeed795423e3538d810bda8e1e3fcdcfa5
Link:
https://www.unpac.me/results/f5fa41d5-5e92-462e-a17e-6a3e69fb4977/
SH256 hash:
b61654d4440ff18d10ad8a7425493946063c79e233aef6e97d8b6c20d092bda2
MD5 hash:
61fd0b434aea06bc1d0a9d2e9cae9a93
SHA1 hash:
df2261c450ef882338e09310c7d3b3b21d76479a
Link:
https://www.unpac.me/results/f5fa41d5-5e92-462e-a17e-6a3e69fb4977/
Malware family:
XLoader
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Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/b61654d4440f/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/b61654d4440ff18d10ad8a7425493946063c79e233aef6e97d8b6c20d092bda2

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:pe_imphash
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Rule name:Skystars_Malware_Imphash
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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 b61654d4440ff18d10ad8a7425493946063c79e233aef6e97d8b6c20d092bda2

(this sample)

  
Delivery method
Distributed via e-mail attachment

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