MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b91bc0502520088a6dc736f33af703305dc0c17ad94085ac6f4f9a027a9757a4. 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: 12


Intelligence 12 IOCs YARA 2 File information Comments
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SHA256 hash: b91bc0502520088a6dc736f33af703305dc0c17ad94085ac6f4f9a027a9757a4
SHA3-384 hash: 14ee3bdaba80190e0d65d9edca487554209acc997b0b51676e4a1d2707d0fa85334a3ff34c7a7cab8650a76082c311c9
SHA1 hash: 7de2fa14d906f504021487d81a514576d3110adc
MD5 hash: 980b0561425ba53258edce1651b65ab3
humanhash: quebec-monkey-music-oranges
File name:Επιβεβαίωση πληρωμής.pdf.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:550'912 bytes
First seen:2022-06-27 10:20:09 UTC
Last seen:2022-06-27 11:19:01 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'660 x AgentTesla, 19'470 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 12288:pWosRRDAv8HgDk2RsIFM+V8LYjL3ZjA3fJEkBLVet:p2RkkakQmC8LqL3K78
Threatray 14'080 similar samples on MalwareBazaar
TLSH T104C40269BBE7DE56C1A48633D0E0500013BA93D76907FB1F66CDB25A4E133CB8C526CA
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)
File icon (PE):PE icon
dhash icon b2f949b1bafab8b0 (18 x AgentTesla, 17 x Loki, 17 x Formbook)
Reporter pr0xylife
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
244
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/283542/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file in the %temp% directory
Creating a file
Searching for synchronization primitives
Launching cmd.exe command interpreter
Creating a window
Launching a process
Searching for the window
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Adding an access-denied ACE
Сreating synchronization primitives
Creating a process from a recently created file
Creating a process with a hidden window
Enabling autorun by creating a file
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
greyware packed
Link:
https://www.filescan.io/uploads/62b984911fcdba4e1a5f6e30/reports/83ed7151-7f5e-41a7-9a36-31d68b2a4c53/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
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/d19d627e-04ff-42f7-8b1a-334068b40339
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1020326
Signature
.NET source code contains potential unpacker
Adds a directory exclusion to Windows Defender
Allocates memory in foreign processes
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Initial sample is a PE file and has a suspicious name
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)
Multi AV Scanner detection for dropped file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to detect virtualization through RDTSC time measurements
Uses an obfuscated file name to hide its real file extension (double extension)
Uses schtasks.exe or at.exe to add and modify task schedules
Writes to foreign memory regions
Yara detected AntiVM3
Yara detected FormBook
Yara detected Generic Downloader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 652819 Sample: 03c2.pdf.exe Startdate: 27/06/2022 Architecture: WINDOWS Score: 100 44 Malicious sample detected (through community Yara rule) 2->44 46 Antivirus detection for URL or domain 2->46 48 Multi AV Scanner detection for dropped file 2->48 50 10 other signatures 2->50 10 03c2.pdf.exe 7 2->10         started        process3 file4 36 C:\Users\user\AppData\Roaming\WOVSBqu.exe, PE32 10->36 dropped 38 C:\Users\user\...\WOVSBqu.exe:Zone.Identifier, ASCII 10->38 dropped 40 C:\Users\user\AppData\Local\...\tmpDF40.tmp, XML 10->40 dropped 42 C:\Users\user\AppData\...\03c2.pdf.exe.log, ASCII 10->42 dropped 52 Uses schtasks.exe or at.exe to add and modify task schedules 10->52 54 Writes to foreign memory regions 10->54 56 Allocates memory in foreign processes 10->56 58 2 other signatures 10->58 14 RegSvcs.exe 10->14         started        17 powershell.exe 25 10->17         started        19 schtasks.exe 1 10->19         started        signatures5 process6 signatures7 66 Modifies the context of a thread in another process (thread injection) 14->66 68 Maps a DLL or memory area into another process 14->68 70 Sample uses process hollowing technique 14->70 72 2 other signatures 14->72 21 explorer.exe 14->21 injected 23 conhost.exe 17->23         started        25 conhost.exe 19->25         started        process8 process9 27 colorcpl.exe 21->27         started        signatures10 60 Modifies the context of a thread in another process (thread injection) 27->60 62 Maps a DLL or memory area into another process 27->62 64 Tries to detect virtualization through RDTSC time measurements 27->64 30 cmd.exe 1 27->30         started        32 explorer.exe 160 27->32         started        process11 process12 34 conhost.exe 30->34         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/b91bc0502520088a6dc736f33af703305dc0c17ad94085ac6f4f9a027a9757a4/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2022-06-27 10:21:08 UTC
File Type:
PE (.Net Exe)
Extracted files:
9
AV detection:
22 of 26 (84.62%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=xen4aubfeaeiu3ohg3ztv5ydgbo4bql23failldpj6nae6uxk6sa._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
089fdb9024c9f8436e2c2a7e0e8734266fe5d65bcdbaf99fac4a26b0879b29d9
Formbook
27d5408961dba9baf42c42b2574c863ccf523ee98fb0648559b733dd52fb37dc
Formbook
28fc7ef1aa47bbec6342320a56f7accc1bc57cf96a5b75762f33fb5f9eea96c7
Formbook
69af526dae44e6d6cd6c83d443d2129c948e7c46d099d89f48a4bbecbab61cfd
Formbook
78fdca14f99e25685ccef65e154f5c747430a955c399adb72d32cd0e364a4780
Formbook
a52dca7952fc2f9e276a79f41db2de5dfc2f7cc77296a72534fb052e0deaf977
Formbook
b01ea964fe231d0b56d71ca6b447a1d51a31530e307227ff44fa8552f86bf3d5
Formbook
eaaac6aaed3693a3b985b49faf8af5ff9df1b1761cba58a10b5e5ce8fcc6ba81
Formbook
+ 14'070 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:de08 rat spyware stealer suricata trojan
Link:
https://tria.ge/reports/220627-mdm2rscce4/
Behaviour
Creates scheduled task(s)
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
Enumerates physical storage devices
Suspicious use of SetThreadContext
Checks computer location settings
Formbook Payload
Formbook
suricata: ET MALWARE FormBook CnC Checkin (GET)
Unpacked files
SH256 hash:
3f78f0ffadf4d713bbf5893516266f1528159c5f76d2b0c004162c3c76ca1684
MD5 hash:
035b80025b80603c2338447c8f9deae9
SHA1 hash:
99cd99c2d63e71c6e0d389b8ec0734d4b98c0e72
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
FormBook
Create hunting rule
Link:
https://www.unpac.me/results/c06a9a35-5de4-4369-ba15-1de4868ec558/
Parent samples :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 hash:
0aa8ea56f670ef5041fe87ee1a27b6623c2cf7996ed489214aa076996ca40cac
MD5 hash:
faf84cab64260654988db2f9157f8f89
SHA1 hash:
e1e6ebeaf252c78e74c1355cdefc6a2c52cfab70
Link:
https://www.unpac.me/results/c06a9a35-5de4-4369-ba15-1de4868ec558/
SH256 hash:
0cb6aef1fa57d11408e47ae071485ef8f48c2982997b8d74b47a4151d85b978c
MD5 hash:
843aa6edf83bff7b61c6a5369ef41e95
SHA1 hash:
d1bfeec8eaac9a1dacf2f7062ce964d8e7d77085
Link:
https://www.unpac.me/results/c06a9a35-5de4-4369-ba15-1de4868ec558/
SH256 hash:
465dce06ba82f5ee4277a8b4ef7e4c16957853d5f9c8c006935b98fd65fb1190
MD5 hash:
65bf1dc8c94436f8b9a8db6040f61457
SHA1 hash:
d002f5dc4748b8480ee8e52cd134120e84e7acda
Link:
https://www.unpac.me/results/c06a9a35-5de4-4369-ba15-1de4868ec558/
SH256 hash:
a2ae2000a79d7961d9c4b4e63923775b88a60eb0c2b89f8789d2ce0c13e853e5
MD5 hash:
027dc4860ea58e856d51c76520929f62
SHA1 hash:
64155e8da0f1d78a46f85d84f3accfa576525a84
Link:
https://www.unpac.me/results/c06a9a35-5de4-4369-ba15-1de4868ec558/
SH256 hash:
b91bc0502520088a6dc736f33af703305dc0c17ad94085ac6f4f9a027a9757a4
MD5 hash:
980b0561425ba53258edce1651b65ab3
SHA1 hash:
7de2fa14d906f504021487d81a514576d3110adc
Link:
https://www.unpac.me/results/c06a9a35-5de4-4369-ba15-1de4868ec558/
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/b91bc0502520088a6dc736f33af703305dc0c17ad94085ac6f4f9a027a9757a4

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
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.

Cape
Cape
https://www.capesandbox.com/analysis/283542/

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