MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b1248c9a9d2892a23cd6927ccfad438e360f5977e47c38d424522e7d67d10816. 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: 11


Intelligence 11 IOCs YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b1248c9a9d2892a23cd6927ccfad438e360f5977e47c38d424522e7d67d10816
SHA3-384 hash: fc414778594a3c9ff730fd2878d00f65670f4b866e4b0bdab513e75e32ec169f74a54390f9fbb7f0f3f53d280f6e6023
SHA1 hash: 9e6eb31d6cf49c61701e1020b7b2d4632cd4a2d6
MD5 hash: d18c3cf8d20038d8a9bc2c79afedaf3b
humanhash: apart-papa-india-mississippi
File name:design B.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:958'466 bytes
First seen:2022-09-01 12:54:43 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash e44b1ce3d13e55963ede0f334a1c0840 (5 x ModiLoader, 2 x Formbook)
ssdeep 24576:J6K2h1iVrItFQWGKN+NXN40JIyLrFHDvk:J6K286n+NXmWb1j
TLSH T1E9159EF6B2E19B33D0631A7DCD176369DD29EE111E10795D27E5288C8F78680382FA63
TrID 65.6% (.EXE) Win32 Executable Borland Delphi 7 (664796/42/58)
25.9% (.EXE) Win32 Executable Borland Delphi 6 (262638/61)
4.2% (.EXE) InstallShield setup (43053/19/16)
1.3% (.EXE) Win32 Executable Delphi generic (14182/79/4)
1.2% (.SCR) Windows screen saver (13101/52/3)
File icon (PE):PE icon
dhash icon ecf4b2b2b2d4d4dc (6 x ModiLoader, 2 x Formbook, 2 x RemcosRAT)
Reporter TeamDreier
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
287
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
design B.exe
Verdict:
Malicious activity
Analysis date:
2022-09-01 12:57:15 UTC
Tags:
installer
Link:
https://app.any.run/tasks/bf660f2d-1fce-4b48-b657-a8d48080e285

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/307237/
Detection(s):
SecuriteInfo.com.ArtemisC8DC523ED371.11810.29403.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Searching for the window
Сreating synchronization primitives
Searching for synchronization primitives
DNS request
Sending a custom TCP request
Creating a file
Launching a process
Creating a process with a hidden window
Sending an HTTP GET request
Reading critical registry keys
Creating a file in the %temp% directory
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Stealing user critical data
Unauthorized injection to a system process
Result
Malware family:
n/a
Score:
  5/10
Tags:
n/a
Link:
https://dragonfly.certego.net/analysis/36314/overview
Behaviour
MalwareBazaar
CheckCmdLine
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
evasive keylogger overlay
Link:
https://www.filescan.io/uploads/6310ac252fdf5a08259838fe/reports/065fab08-3649-4304-aa2c-930229aef0c9/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.
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/7b353e73-500d-4c40-84f8-8c64e2d3bb7b
Result
Threat name:
DBatLoader, FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1062814
Signature
Allocates memory in foreign processes
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Creates a thread in another existing process (thread injection)
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)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Writes to foreign memory regions
Yara detected DBatLoader
Yara detected FormBook
Yara detected UAC Bypass using ComputerDefaults
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 695371 Sample: design B.exe Startdate: 01/09/2022 Architecture: WINDOWS Score: 100 46 Malicious sample detected (through community Yara rule) 2->46 48 Antivirus / Scanner detection for submitted sample 2->48 50 Multi AV Scanner detection for submitted file 2->50 52 3 other signatures 2->52 8 design B.exe 16 18 2->8         started        process3 dnsIp4 40 l-0003.l-dc-msedge.net 13.107.43.12, 443, 49721, 49723 MICROSOFT-CORP-MSN-AS-BLOCKUS United States 8->40 42 192.168.2.1 unknown unknown 8->42 44 3 other IPs or domains 8->44 24 C:\Users\Public\Libraries\Istlkmbfz.exe, PE32 8->24 dropped 26 C:\Users\...\Istlkmbfz.exe:Zone.Identifier, ASCII 8->26 dropped 58 Writes to foreign memory regions 8->58 60 Allocates memory in foreign processes 8->60 62 Creates a thread in another existing process (thread injection) 8->62 64 Injects a PE file into a foreign processes 8->64 13 iexpress.exe 8->13         started        file5 signatures6 process7 signatures8 66 Modifies the context of a thread in another process (thread injection) 13->66 68 Maps a DLL or memory area into another process 13->68 70 Queues an APC in another process (thread injection) 13->70 16 explorer.exe 13->16 injected process9 process10 18 Istlkmbfz.exe 15 16->18         started        22 Istlkmbfz.exe 15 16->22         started        dnsIp11 28 l-0004.l-dc-msedge.net 13.107.43.13, 443, 49727, 49729 MICROSOFT-CORP-MSN-AS-BLOCKUS United States 18->28 30 qllvuq.dm.files.1drv.com 18->30 36 3 other IPs or domains 18->36 54 Antivirus detection for dropped file 18->54 56 Multi AV Scanner detection for dropped file 18->56 32 qllvuq.dm.files.1drv.com 22->32 34 onedrive.live.com 22->34 38 2 other IPs or domains 22->38 signatures12
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/b1248c9a9d2892a23cd6927ccfad438e360f5977e47c38d424522e7d67d10816/
Threat name:
Win32.Backdoor.Remcos
Create hunting rule
Status:
Malicious
First seen:
2022-09-01 12:43:51 UTC
File Type:
PE (Exe)
Extracted files:
52
AV detection:
22 of 26 (84.62%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=wesizgu5fcjkepgwsj6m7lkdry3a6wlx4r6drvbekixh2z6rbala._file
Result
Malware family:
modiloader
Create hunting rule
Score:
  10/10
Tags:
family:modiloader persistence trojan
Link:
https://tria.ge/reports/220901-p5r6xafhf8/
Behaviour
Modifies Internet Explorer settings
Modifies registry class
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Adds Run key to start application
Checks computer location settings
ModiLoader Second Stage
ModiLoader, DBatLoader
Unpacked files
SH256 hash:
1522d5420017b1a441879eb3b82dc865cb51683e52eb4360350aa8863cc231f4
MD5 hash:
9677c1e5bda56255f94796b4d5e715d8
SHA1 hash:
99d81e250fe6df765208d861cdb8c59f13534ff0
Detections:
win_dbatloader_g1
Create hunting rule
Link:
https://www.unpac.me/results/c9a7e736-c9f4-49c1-8a67-77272294cbe7/
Parent samples :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 hash:
b1248c9a9d2892a23cd6927ccfad438e360f5977e47c38d424522e7d67d10816
MD5 hash:
d18c3cf8d20038d8a9bc2c79afedaf3b
SHA1 hash:
9e6eb31d6cf49c61701e1020b7b2d4632cd4a2d6
Link:
https://www.unpac.me/results/c9a7e736-c9f4-49c1-8a67-77272294cbe7/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/b1248c9a9d28/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/b1248c9a9d2892a23cd6927ccfad438e360f5977e47c38d424522e7d67d10816

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:win_formbook_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:Detects win.formbook.

File information

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

Malspam

Formbook

Executable exe b1248c9a9d2892a23cd6927ccfad438e360f5977e47c38d424522e7d67d10816

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/307237/

Comments