MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c592f572b4f87a2427947d58315997c0165d1d5a9aaf0cccbdc42f4cd296a996. 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 7 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: c592f572b4f87a2427947d58315997c0165d1d5a9aaf0cccbdc42f4cd296a996
SHA3-384 hash: bb65ab26b68a1e45880a7640204905db3bfef14256991412e7940ea8634ba393077acc36f960d1bbb1b215f4412afad2
SHA1 hash: c2d8b3a1c1a245e1aca42683760a4b317858bfb1
MD5 hash: 8f29f0cc0f9a20e7b00431fe10cd5de0
humanhash: seven-oven-wolfram-idaho
File name:29092022T.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:1'134'924 bytes
First seen:2022-09-29 14:49:46 UTC
Last seen:2022-09-29 14:54:33 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash fcf1390e9ce472c7270447fc5c61a0c1 (863 x DCRat, 118 x NanoCore, 94 x njrat)
ssdeep 24576:UAOcZXcxP6Wv3lTmCunvYa4KwNPoWirfV3pN6k77rvyOMe:CHBZ9uvxONAWI93pN6kDbn
TLSH T13F351242B7D1C472D16219358D3AAB186D7D3D701E249A1FF3E4196EEA326826730BB3
TrID 91.0% (.EXE) WinRAR Self Extracting archive (4.x-5.x) (265042/9/39)
3.6% (.EXE) Win64 Executable (generic) (10523/12/4)
1.7% (.EXE) Win16 NE executable (generic) (5038/12/1)
1.5% (.EXE) Win32 Executable (generic) (4505/5/1)
0.6% (.EXE) OS/2 Executable (generic) (2029/13)
File icon (PE):PE icon
dhash icon 8271cc9696cc7182 (10 x Formbook, 1 x NetWire)
Reporter lowmal3
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
280
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/314853/
Detection(s):
SecuriteInfo.com.Gen.Variant.Johnnie.221809.751.14920.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Сreating synchronization primitives
Searching for synchronization primitives
Creating a file
Enabling the 'hidden' option for recently created files
Creating a process from a recently created file
Adding an access-denied ACE
Launching a process
Launching cmd.exe command interpreter
Sending a custom TCP request
Setting browser functions hooks
Forced shutdown of a system process
Unauthorized injection to a system process
Unauthorized injection to a browser process
Result
Malware family:
n/a
Score:
  6/10
Tags:
n/a
Link:
https://dragonfly.certego.net/analysis/39996/overview
Behaviour
MalwareBazaar
MeasuringTime
EvasionQueryPerformanceCounter
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
80%
Tags:
formbook greyware nanocore overlay packed setupapi.dll shdocvw.dll shell32.dll
Link:
https://www.filescan.io/uploads/6335b09c57a9522077cc3c0a/reports/9621eda7-f4dd-4f81-a9b8-9ce60386d351/overview
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.
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/553a5dfa-cbef-47f2-bbc0-dc22d530d660
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1080197
Signature
Allocates memory in foreign processes
C2 URLs / IPs found in malware configuration
Drops PE files with a suspicious file extension
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)
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
Tries to detect virtualization through RDTSC time measurements
Writes to foreign memory regions
Yara detected AntiVM autoit script
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 712753 Sample: 29092022T.exe Startdate: 29/09/2022 Architecture: WINDOWS Score: 100 45 Malicious sample detected (through community Yara rule) 2->45 47 Multi AV Scanner detection for submitted file 2->47 49 Yara detected FormBook 2->49 51 4 other signatures 2->51 11 29092022T.exe 23 2->11         started        process3 file4 33 C:\2_38\enpdlojvmi.pif, PE32 11->33 dropped 67 Drops PE files with a suspicious file extension 11->67 15 enpdlojvmi.pif 2 11->15         started        signatures5 process6 dnsIp7 35 192.168.2.1 unknown unknown 15->35 37 Multi AV Scanner detection for dropped file 15->37 39 Machine Learning detection for dropped file 15->39 41 Writes to foreign memory regions 15->41 43 3 other signatures 15->43 19 RegSvcs.exe 15->19         started        22 RegSvcs.exe 15->22         started        signatures8 process9 signatures10 53 Modifies the context of a thread in another process (thread injection) 19->53 55 Maps a DLL or memory area into another process 19->55 57 Sample uses process hollowing technique 19->57 59 Queues an APC in another process (thread injection) 19->59 24 explorer.exe 19->24 injected 61 Tries to detect virtualization through RDTSC time measurements 22->61 process11 process12 26 msiexec.exe 24->26         started        signatures13 63 Modifies the context of a thread in another process (thread injection) 26->63 65 Maps a DLL or memory area into another process 26->65 29 cmd.exe 1 26->29         started        process14 process15 31 conhost.exe 29->31         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/c592f572b4f87a2427947d58315997c0165d1d5a9aaf0cccbdc42f4cd296a996/
Threat name:
Win32.Trojan.Leonem
Create hunting rule
Status:
Malicious
First seen:
2022-09-29 10:46:09 UTC
File Type:
PE (Exe)
Extracted files:
58
AV detection:
24 of 40 (60.00%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=ywjpk4vu7b5cij4upvmdcwmxyalf2hk2tkxqztf5yqxuzuuwvgla._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:se30 rat spyware stealer trojan
Link:
https://tria.ge/reports/220929-r7k7gsbbf6/
Behaviour
Gathers network information
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
Loads dropped DLL
Executes dropped EXE
Formbook payload
Formbook
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/11a75268-ac53-4699-aab7-3a692851f2e1
Unpacked files
SH256 hash:
fec90244d14e12381826e2fa115822ce29c429ed19579235b42bcebbfcc2ea84
MD5 hash:
b67c1e0bc307aa37591b28230e2b555c
SHA1 hash:
e9614fa595fd82d4f99cd9e8a3a4bb094f766a74
Detections:
FormBook
Create hunting rule
win_formbook_auto
Create hunting rule
win_formbook_g0
Create hunting rule
Link:
https://www.unpac.me/results/50882a41-a823-46ba-8d94-e53d60379082/
Parent samples :
aa005608adb8e7e3c775383f20f2608164056713bcbb92d0ec5c99994d8af750
a96ccfc5b5b64660b986d22b9bcc96cb5e178d3d506893bd24a959a5338a4a32
80512cf673dd31a9773077d3bb4fdd06b5741f263980c4c1963286737d77c0ec
196d28ffbe79ad0c781de3236791292f10aaf0a1c0442b48105a876fae54bc20
61dd51dcce8bcfdb4821dda40d374c76a5c1dcc64086e4b1ef4d672b56f1897d
c592f572b4f87a2427947d58315997c0165d1d5a9aaf0cccbdc42f4cd296a996
SH256 hash:
efdbef5fb98694f4216b2b57762a61a98222e90d85e9be0fca2774ee0c6248b7
MD5 hash:
0b915def7e49f60105fdf7255227f8bb
SHA1 hash:
9fa63a2030bb7b5066c06302b020e86bdaa8b47c
Link:
https://www.unpac.me/results/50882a41-a823-46ba-8d94-e53d60379082/
SH256 hash:
c592f572b4f87a2427947d58315997c0165d1d5a9aaf0cccbdc42f4cd296a996
MD5 hash:
8f29f0cc0f9a20e7b00431fe10cd5de0
SHA1 hash:
c2d8b3a1c1a245e1aca42683760a4b317858bfb1
Link:
https://www.unpac.me/results/50882a41-a823-46ba-8d94-e53d60379082/
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/c592f572b4f87a2427947d58315997c0165d1d5a9aaf0cccbdc42f4cd296a996

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: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:pdb_YARAify
Create hunting rule
Author:@wowabiy314
Description:PDB
Rule name:RansomwareTest8
Create hunting rule
Author:Daoyuan Wu
Description:Test Ransomware YARA rules
Rule name:sfx_pdb
Create hunting rule
Author:@razvialex
Description:Detect interesting files containing sfx with pdb paths.
Rule name:sfx_pdb_winrar_restrict
Create hunting rule
Author:@razvialex
Description:Detect interesting files containing sfx with pdb paths.

File information

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

Malspam

Formbook

Executable exe c592f572b4f87a2427947d58315997c0165d1d5a9aaf0cccbdc42f4cd296a996

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/314853/

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