MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 1cbd3337b16b5bc9cf9a448349daf9b7d1667bc689d992af9d15c5af950852f9. 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
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 1cbd3337b16b5bc9cf9a448349daf9b7d1667bc689d992af9d15c5af950852f9
SHA3-384 hash: 40a2d881dc01a55fa314ccad5e3dece3449452f4caa19d57a32bd8e56182812f0fd09db2edee7825fe237210640fd88f
SHA1 hash: cdf02cf3309ce107f71f5b6d88155f682ef5615d
MD5 hash: 444536aa1f919776c176230fde84b1f5
humanhash: victor-freddie-island-steak
File name:vbc.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:290'328 bytes
First seen:2022-06-22 10:42:10 UTC
Last seen:2022-07-14 05:40:56 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 6144:aW6GJqi8h6cZeoO+Hn96gfS1Ach8R3oQVSgy3SPBS:CkceobfS1KRLVST2BS
Threatray 1'280 similar samples on MalwareBazaar
TLSH T1FD54D04BB7D85B00D4586AB984DF093813E6AFC33E32D7953F5522ED1D83393AE44A89
TrID 52.5% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
22.4% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13)
7.5% (.EXE) Win64 Executable (generic) (10523/12/4)
4.7% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
3.6% (.EXE) Win16 NE executable (generic) (5038/12/1)
Reporter pr0xylife
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
3
# of downloads :
235
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/282266/
Detection(s):
SecuriteInfo.com.W32.AIDetectNet.01.19735.29550.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Launching a process
Creating a file
Сreating synchronization primitives
Launching cmd.exe command interpreter
DNS request
Sending an HTTP GET request
Searching for synchronization primitives
Forced shutdown of a system process
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
obfuscated overlay packed
Link:
https://www.filescan.io/uploads/62b2f27f62d792dc573c4c89/reports/ec2cf586-1c19-4a19-bbd0-8d8ceb834545/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/70dd88ba-6248-43ee-8351-8c9b9caecb12
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1017814
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code references suspicious native API functions
Allocates memory in foreign processes
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent)
Injects a PE file into a foreign processes
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 submitted file
Performs DNS queries to domains with low reputation
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Snort IDS alert for network traffic
System process connects to network (likely due to code injection or exploit)
Tries to detect virtualization through RDTSC time measurements
Writes to foreign memory regions
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 650308 Sample: vbc.exe Startdate: 22/06/2022 Architecture: WINDOWS Score: 100 29 www.reversedwarbler.com 2->29 47 Snort IDS alert for network traffic 2->47 49 Malicious sample detected (through community Yara rule) 2->49 51 Antivirus detection for URL or domain 2->51 53 6 other signatures 2->53 10 vbc.exe 1 2->10         started        signatures3 process4 file5 27 C:\Users\user\AppData\Local\...\vbc.exe.log, ASCII 10->27 dropped 55 Writes to foreign memory regions 10->55 57 Allocates memory in foreign processes 10->57 59 Injects a PE file into a foreign processes 10->59 61 Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent) 10->61 14 cvtres.exe 10->14         started        signatures6 process7 signatures8 63 Modifies the context of a thread in another process (thread injection) 14->63 65 Maps a DLL or memory area into another process 14->65 67 Sample uses process hollowing technique 14->67 69 2 other signatures 14->69 17 wlanext.exe 14->17         started        20 explorer.exe 14->20 injected process9 dnsIp10 37 Modifies the context of a thread in another process (thread injection) 17->37 39 Maps a DLL or memory area into another process 17->39 41 Tries to detect virtualization through RDTSC time measurements 17->41 23 cmd.exe 1 17->23         started        31 strongdigits.com 51.195.62.160, 49779, 80 OVHFR France 20->31 33 www.electrosle.xyz 172.67.176.203, 49839, 80 CLOUDFLARENETUS United States 20->33 35 6 other IPs or domains 20->35 43 System process connects to network (likely due to code injection or exploit) 20->43 45 Performs DNS queries to domains with low reputation 20->45 signatures11 process12 process13 25 conhost.exe 23->25         started       
Detection:
xloader
Create hunting rule
Link:
https://mwdb.cert.pl/sample/1cbd3337b16b5bc9cf9a448349daf9b7d1667bc689d992af9d15c5af950852f9/
Threat name:
ByteCode-MSIL.Spyware.Noon
Create hunting rule
Status:
Malicious
First seen:
2022-06-22 10:43:07 UTC
File Type:
PE (.Net Exe)
Extracted files:
1
AV detection:
21 of 26 (80.77%)
Threat level:
  2/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=ds6tgn5rnnn4tt42isbutwxzw7iwm66grhmzfl45cxc27fiikl4q._file
Verdict:
malicious
Similar samples:
276c6876c250e5ebfd761d05937f5a48f7e4c9a6851293a77ab9bf683c8bbf80
Formbook
39a3f149c23d6a96537aa6efeeedcd2dacb5d92103c736c115ef37a3054a6aa7
Formbook
4e586d008dc06d3c77d590393b4e565273b30ef2b536a193976c9a82353878bf
Formbook
60e52790f183036e12c61a0f9eb0cec90e757f8e862a9a49144849b9ceffb1c3
Formbook
69b85346ac98c0d0689406cd8a983c42f440600c6d57241c24b3e3b709f6406e
Formbook
d4aba71c5e7292eeea13722a41fc53166e50a6d7cdf6a1a28b94ca8c1cfc2245
Formbook
d9edf42affd4dae1e5c0260eb6095e8ea3f03812e2479820dc6a41183adbe827
Formbook
df16ab790a09329e447422f579382e23f5d3212c63a9b90c80c61405af18d57b
Formbook
+ 1'270 additional samples on MalwareBazaar
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:formbook family:xloader campaign:n8it loader persistence rat spyware stealer suricata trojan
Link:
https://tria.ge/reports/220622-mr8wdscgdj/
Behaviour
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
System policy modification
Drops file in Program Files directory
Suspicious use of SetThreadContext
Adds Run key to start application
Reads user/profile data of web browsers
Uses the VBS compiler for execution
Adds policy Run key to start application
Blocklisted process makes network request
Xloader Payload
Formbook
Xloader
suricata: ET MALWARE FormBook CnC Checkin (GET)
suricata: ET MALWARE FormBook CnC Checkin (POST) M2
Unpacked files
SH256 hash:
05a8ab9bfc1a265caeb257b4edee8feb7a5b3b653e6acb0f40bec9b1f15dd932
MD5 hash:
1d49791abb6a5558c95ddfa97fc2d205
SHA1 hash:
f525de3dceb15a4916c117638e82bc594c33fe4e
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/ccc85751-f5d4-4eae-829b-e832be729c0d/
Parent samples :
1cbd3337b16b5bc9cf9a448349daf9b7d1667bc689d992af9d15c5af950852f9
154325f60d87e33962f45610a84bce0ec784d7e9bbcd584c34429b3e98b07ca7
d68fa1001c7c79b3a4c142875ded35be6b07025eabe4b6ad576c1c3d11054ac8
e6ced08f9d33a491dbfd37d5a8d81766fa63dda41f619eb8c7edb0ed3116047a
64b9f04e500e377972f23c923e678d2d3ec4aecc42d0634de4e09570b1d58d35
SH256 hash:
954db93d34a3aa790fa3a6c4bd27f1cdc19fa81867fdf63e2c1c86fdc04ee0a6
MD5 hash:
67a03be0b2aa4eefe2549a078f5e8848
SHA1 hash:
41ddb248d43230a432de4c3e8df5ddc16bd44a1f
Link:
https://www.unpac.me/results/ccc85751-f5d4-4eae-829b-e832be729c0d/
SH256 hash:
1cbd3337b16b5bc9cf9a448349daf9b7d1667bc689d992af9d15c5af950852f9
MD5 hash:
444536aa1f919776c176230fde84b1f5
SHA1 hash:
cdf02cf3309ce107f71f5b6d88155f682ef5615d
Link:
https://www.unpac.me/results/ccc85751-f5d4-4eae-829b-e832be729c0d/
Malware family:
XLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/1cbd3337b16b/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Legit
Score:
0.00
Link:
https://yomi.yoroi.company/submissions/1cbd3337b16b5bc9cf9a448349daf9b7d1667bc689d992af9d15c5af950852f9

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
Create hunting rule
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.

Web download

Formbook

Executable exe 1cbd3337b16b5bc9cf9a448349daf9b7d1667bc689d992af9d15c5af950852f9

(this sample)

Cape
Cape
https://www.capesandbox.com/analysis/282266/
  
URLhaus
https://urlhaus.abuse.ch/url/2247249/
  
Delivery method
Distributed via web download

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