MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 d2a40596de9ecbb325f4d6a7dced2a1bccec1cc8f83f786940835e83e1bc05dc. 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: 18


Intelligence 18 IOCs YARA 8 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: d2a40596de9ecbb325f4d6a7dced2a1bccec1cc8f83f786940835e83e1bc05dc
SHA3-384 hash: e0d3b40e847c4588a0c415d1afcfa8249cb544125069c439dcf9763f555d4b2762f324cc3f63afb32bf80ce7856d972c
SHA1 hash: 3c50e3d5b630aa6a8015b349b4e18169b6c297da
MD5 hash: c2744465d0bedc9aa98714338225a6f3
humanhash: texas-nuts-carpet-nevada
File name:jestseewer.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:1'190'955 bytes
First seen:2022-09-22 15:21:35 UTC
Last seen:2022-09-23 03:53:22 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash fcf1390e9ce472c7270447fc5c61a0c1 (863 x DCRat, 118 x NanoCore, 94 x njrat)
ssdeep 24576:iAOcZXp07zxTM+FFyvJjjcepfSjE+vRPGQFV0aBTjWFqwA4:oXzJZFYvhjdqvtGQFV9jWx
TLSH T15D451242F7E1A8B2D9720D3006226B31ADBD7C605E21E65FA3D45A7DEF311905226FE3
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 80a4a6a6a6a68081 (11 x Formbook)
Reporter pr0xylife
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
345
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
jestseewer.exe
Verdict:
Malicious activity
Analysis date:
2022-09-22 15:24:20 UTC
Tags:
formbook trojan stealer
Link:
https://app.any.run/tasks/7f5a9598-2f7e-4433-a6a5-c7d32a0a83c4

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/312396/
Detection(s):
SecuriteInfo.com.Gen.Variant.Johnnie.221809.751.14920.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Searching for the window
Сreating synchronization primitives
Searching for synchronization primitives
Creating a file in the %AppData% subdirectories
Enabling the 'hidden' option for recently created files
Creating a process from a recently created file
Creating a file
Adding an access-denied ACE
Launching a process
Sending a custom TCP request
Launching cmd.exe command interpreter
Reading critical registry keys
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/38489/overview
Behaviour
MalwareBazaar
MeasuringTime
EvasionQueryPerformanceCounter
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
greyware overlay packed setupapi.dll shdocvw.dll shell32.dll
Link:
https://www.filescan.io/uploads/632c7e5412db32f02468369b/reports/c6540a85-f334-443f-8485-c384566381e8/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/b6d0aaf1-51f3-4c12-be73-d792770fa42c
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1075413
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
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: 707957 Sample: jestseewer.exe Startdate: 22/09/2022 Architecture: WINDOWS Score: 100 47 Malicious sample detected (through community Yara rule) 2->47 49 Multi AV Scanner detection for submitted file 2->49 51 Yara detected FormBook 2->51 53 3 other signatures 2->53 11 jestseewer.exe 32 2->11         started        process3 dnsIp4 37 192.168.2.1 unknown unknown 11->37 35 C:\Users\user\AppData\...\eqhxkjjkof.pif, PE32 11->35 dropped 71 Drops PE files with a suspicious file extension 11->71 16 eqhxkjjkof.pif 2 11->16         started        file5 signatures6 process7 signatures8 39 Multi AV Scanner detection for dropped file 16->39 41 Writes to foreign memory regions 16->41 43 Allocates memory in foreign processes 16->43 45 2 other signatures 16->45 19 RegSvcs.exe 16->19         started        22 RegSvcs.exe 16->22         started        process9 signatures10 55 Modifies the context of a thread in another process (thread injection) 19->55 57 Maps a DLL or memory area into another process 19->57 59 Sample uses process hollowing technique 19->59 24 explorer.exe 19->24 injected 61 Tries to detect virtualization through RDTSC time measurements 22->61 63 Queues an APC in another process (thread injection) 22->63 process11 process12 26 wscript.exe 24->26         started        29 wlanext.exe 24->29         started        signatures13 65 Modifies the context of a thread in another process (thread injection) 26->65 67 Maps a DLL or memory area into another process 26->67 69 Tries to detect virtualization through RDTSC time measurements 26->69 31 cmd.exe 1 26->31         started        process14 process15 33 conhost.exe 31->33         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/d2a40596de9ecbb325f4d6a7dced2a1bccec1cc8f83f786940835e83e1bc05dc/
Threat name:
Win32.Trojan.Leonem
Create hunting rule
Status:
Malicious
First seen:
2022-09-22 11:21:34 UTC
File Type:
PE (Exe)
Extracted files:
85
AV detection:
17 of 40 (42.50%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=2ksalfw6t3f3gjpu22t5z3jkdpgoyhgi7a7xq2kaqnpihyn4axoa._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:je14 rat spyware stealer trojan
Link:
https://tria.ge/reports/220922-srw5gsbge5/
Behaviour
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
Loads dropped DLL
Executes dropped EXE
Formbook payload
Formbook
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/e5a32120-6cd3-4120-8eff-fb89e0f65ac2
Unpacked files
SH256 hash:
823a68456ee4d5d2f1b0f1aa09f1315f93258abf6f7afcc061759e29597e9fd9
MD5 hash:
a39a8df87966e6758325be25896e9041
SHA1 hash:
78c9b0cb38956c0543b3347cbd049c745e99aeb7
Detections:
FormBook
Create hunting rule
win_formbook_auto
Create hunting rule
win_formbook_g0
Create hunting rule
Link:
https://www.unpac.me/results/774dc767-024d-471a-94cb-6ac64a550a61/
Parent samples :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 hash:
20d15b9677de9fb2b5d06afcdfa8db11b78afbc6763225c59d694cec3f7ab742
MD5 hash:
f49eb01e758dcab2f578e4d09e255b5a
SHA1 hash:
7f35b7707de6d978a50b5928a60d18a50ff905b5
Link:
https://www.unpac.me/results/774dc767-024d-471a-94cb-6ac64a550a61/
SH256 hash:
d2a40596de9ecbb325f4d6a7dced2a1bccec1cc8f83f786940835e83e1bc05dc
MD5 hash:
c2744465d0bedc9aa98714338225a6f3
SHA1 hash:
3c50e3d5b630aa6a8015b349b4e18169b6c297da
Link:
https://www.unpac.me/results/774dc767-024d-471a-94cb-6ac64a550a61/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/d2a40596de9e/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/d2a40596de9ecbb325f4d6a7dced2a1bccec1cc8f83f786940835e83e1bc05dc

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
Create hunting rule
Author:Willi Ballenthin
Rule name:pdb_YARAify
Create hunting rule
Author:@wowabiy314
Description:PDB
Rule name:RansomwareTest4
Create hunting rule
Author:Daoyuan Wu
Description:Test Ransomware YARA rules
Rule name:RansomwareTest5
Create hunting rule
Author:Daoyuan Wu
Description:Test Ransomware YARA rules
Rule name:RansomwareTest6
Create hunting rule
Author:Daoyuan Wu
Description:Test Ransomware YARA rules
Rule name:RansomwareTest7
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.

Cape
Cape
https://www.capesandbox.com/analysis/312396/

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