MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f875be79be10a88a9a5c815b0676cbfc58f48e7524f2e4d383b2d7ef63d2e306. 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 2 File information Comments
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SHA256 hash: f875be79be10a88a9a5c815b0676cbfc58f48e7524f2e4d383b2d7ef63d2e306
SHA3-384 hash: a598289b278e088097d53d6ccace1fffb4db8086d70961b4004535a664744851128b71d7ce19d6d1c8a8abe81b653414
SHA1 hash: 1ee3b44562f12d7236ad8b635f282532a7586e7d
MD5 hash: 3fe6259ed37afe425f5062f917897fe8
humanhash: single-hawaii-queen-high
File name:RE CNHTC--PO confirmation7876765655545654.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:1'165'312 bytes
First seen:2022-11-23 18:22:34 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 24576:OKoG74DjPRhmKOC9Gbnn32Nd/xCjqdOp:O074fPLmuAbnn32Nd/CqdO
TLSH T1C6455B8B2F320DA4CB4E3470188E077C9351F96D6DB4DCB6EE3466681D964AB7E8132D
TrID 63.0% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
11.2% (.SCR) Windows screen saver (13097/50/3)
9.0% (.EXE) Win64 Executable (generic) (10523/12/4)
5.6% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
3.8% (.EXE) Win32 Executable (generic) (4505/5/1)
Reporter Anonymous
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
304
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
formbook
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ID:
1
File name:
RE CNHTC--PO confirmation7876765655545654.exe
Verdict:
Malicious activity
Analysis date:
2022-11-23 18:23:45 UTC
Tags:
trojan formbook stealer
Link:
https://app.any.run/tasks/b1ff5b8a-f82c-40a2-a728-ef6d190f70db

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/337805/
Detection(s):
SecuriteInfo.com.Trojan.Packed2.44597.7243.10227.UNOFFICIAL
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Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
DNS request
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
Launching a process
Launching cmd.exe command interpreter
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/637e650794f9bac087b328ba/reports/d161b67f-af27-4362-b552-1e5fcc2aba49/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.
Malware family:
Formbook
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Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/b01263ba-9c6d-4207-940a-2a2c57bd5572
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1119997
Signature
.NET source code contains potential unpacker
Adds a directory exclusion to Windows Defender
C2 URLs / IPs found in malware configuration
Detected FormBook malware
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
Sigma detected: Scheduled temp file as task from temp location
Sigma detected: Steal Google chrome login data
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to detect virtualization through RDTSC time measurements
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
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: 752713 Sample: RE CNHTC--PO confirmation78... Startdate: 23/11/2022 Architecture: WINDOWS Score: 100 69 Malicious sample detected (through community Yara rule) 2->69 71 Sigma detected: Scheduled temp file as task from temp location 2->71 73 Multi AV Scanner detection for submitted file 2->73 75 11 other signatures 2->75 10 RE CNHTC--PO confirmation7876765655545654.exe 7 2->10         started        14 sFVRBoZT.exe 5 2->14         started        process3 file4 53 C:\Users\user\AppData\Roaming\sFVRBoZT.exe, PE32 10->53 dropped 55 C:\Users\...\sFVRBoZT.exe:Zone.Identifier, ASCII 10->55 dropped 57 C:\Users\user\AppData\Local\...\tmpEE1A.tmp, XML 10->57 dropped 59 RE CNHTC--PO confi...65655545654.exe.log, ASCII 10->59 dropped 89 Adds a directory exclusion to Windows Defender 10->89 91 Injects a PE file into a foreign processes 10->91 16 RE CNHTC--PO confirmation7876765655545654.exe 10->16         started        19 powershell.exe 21 10->19         started        21 schtasks.exe 1 10->21         started        93 Multi AV Scanner detection for dropped file 14->93 95 Machine Learning detection for dropped file 14->95 97 Tries to detect virtualization through RDTSC time measurements 14->97 23 sFVRBoZT.exe 14->23         started        25 schtasks.exe 1 14->25         started        signatures5 process6 signatures7 61 Modifies the context of a thread in another process (thread injection) 16->61 63 Maps a DLL or memory area into another process 16->63 65 Sample uses process hollowing technique 16->65 67 Queues an APC in another process (thread injection) 16->67 27 explorer.exe 16->27 injected 29 conhost.exe 19->29         started        31 conhost.exe 21->31         started        33 conhost.exe 25->33         started        process8 process9 35 WWAHost.exe 18 27->35         started        39 explorer.exe 27->39         started        file10 47 C:\Users\user\AppData\...476Mlogrv.ini, data 35->47 dropped 49 C:\Users\user\AppData\...496Mlogri.ini, data 35->49 dropped 77 Detected FormBook malware 35->77 79 Tries to steal Mail credentials (via file / registry access) 35->79 81 Tries to harvest and steal browser information (history, passwords, etc) 35->81 85 2 other signatures 35->85 41 cmd.exe 2 35->41         started        83 Tries to detect virtualization through RDTSC time measurements 39->83 signatures11 process12 file13 51 C:\Users\user\AppData\Local\Temp\DB1, SQLite 41->51 dropped 87 Tries to harvest and steal browser information (history, passwords, etc) 41->87 45 conhost.exe 41->45         started        signatures14 process15
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/f875be79be10a88a9a5c815b0676cbfc58f48e7524f2e4d383b2d7ef63d2e306/
Threat name:
ByteCode-MSIL.Trojan.Leonem
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Status:
Malicious
First seen:
2022-11-23 07:00:57 UTC
File Type:
PE (.Net Exe)
Extracted files:
10
AV detection:
23 of 26 (88.46%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=7b2346n6ccuivgs4qfnqm5wl7rmpjdtvetzoju4dwll66y6s4mda._file
Verdict:
malicious
Label(s):
formbook
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cobaltstrike
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Result
Malware family:
formbook
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Score:
  10/10
Tags:
family:formbook campaign:ned5 rat spyware stealer trojan
Link:
https://tria.ge/reports/221123-w1f2eagd5z/
Behaviour
Creates scheduled task(s)
Modifies Internet Explorer settings
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
Reads user/profile data of web browsers
Formbook payload
Formbook
Unpacked files
SH256 hash:
60043a39c1941f1a76fbbb9600c03d5003d993a5024aa30abcf1b20107de81e9
MD5 hash:
ded1b3329be4a38b97d3aef2db52c3bf
SHA1 hash:
0b22eac3a2561869fcbaf70d27e804454011d1ea
Detections:
FormBook
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win_formbook_auto
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win_formbook_g0
Create hunting rule
Link:
https://www.unpac.me/results/6b231654-41f0-4f44-830a-cacc396550e6/
Parent samples :
f875be79be10a88a9a5c815b0676cbfc58f48e7524f2e4d383b2d7ef63d2e306
9ba86919308607097ed2da7d7857626435ab53b8b00b88f826fb1f403013fc7c
1d9174bdec1898ff2c3f05a51ec346057741162d0f762ae67f98210e977a39ac
442c6fd01777905091a8e980ed0a91e70439874b1f5c0be1c416280b147c7566
d2551632f3f195c68160fb0faf465cacb8ebab09348ae46d0f6b53be2db4ca97
SH256 hash:
e17215a47782e0905902f0acc157108a5099a18955c3af501c1c57fd5848a66d
MD5 hash:
e6d6a3247d49e56c7f8f28f42fb7f01f
SHA1 hash:
ff08942fbdc9e9004b0af944f6d4a89126c1ab10
Link:
https://www.unpac.me/results/6b231654-41f0-4f44-830a-cacc396550e6/
SH256 hash:
b844a1c1fe6f4bb180ee03beb0a150e8621646822357c9f8ffb36bb0e27e342a
MD5 hash:
441f3ed76faa64115527ea1e7ab39519
SHA1 hash:
cef6ff0db32ee429ae764372ae50de4113dee594
Link:
https://www.unpac.me/results/6b231654-41f0-4f44-830a-cacc396550e6/
SH256 hash:
99da846d4893caa0d58e467e70479876544c90221d1993c6ce8ae2bf19db540b
MD5 hash:
b87d1654a57c8b0c46bf32aae045dec1
SHA1 hash:
6b56dbdadf3e1e3d116f0919d3a98b697efc44ce
Link:
https://www.unpac.me/results/6b231654-41f0-4f44-830a-cacc396550e6/
SH256 hash:
42a1249a9193cf570ef2e7cc696bcd402c120683a816c7b62492ac53b664235a
MD5 hash:
57ca7230fe27a3ec18b5efb8ebef56b8
SHA1 hash:
3479c3040376f79e297b79daa389f0786418f03e
Link:
https://www.unpac.me/results/6b231654-41f0-4f44-830a-cacc396550e6/
SH256 hash:
f875be79be10a88a9a5c815b0676cbfc58f48e7524f2e4d383b2d7ef63d2e306
MD5 hash:
3fe6259ed37afe425f5062f917897fe8
SHA1 hash:
1ee3b44562f12d7236ad8b635f282532a7586e7d
Link:
https://www.unpac.me/results/6b231654-41f0-4f44-830a-cacc396550e6/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/f875be79be10/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/f875be79be10a88a9a5c815b0676cbfc58f48e7524f2e4d383b2d7ef63d2e306

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 f875be79be10a88a9a5c815b0676cbfc58f48e7524f2e4d383b2d7ef63d2e306

(this sample)

  
Dropped by
formbook
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/337805/

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