MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4c52fcc759e836699f5b46f6f67d1aa5370b61c2fb72f3cb761f178e07639c96. 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 21 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4c52fcc759e836699f5b46f6f67d1aa5370b61c2fb72f3cb761f178e07639c96
SHA3-384 hash: 3dd98c97b849d4b368a97ce99fe96641affda0d1c7c730b084769a4426ab47e19e80ada7c61b043b82eb8042d6efa92d
SHA1 hash: b0750c849eb6ab861dfa9176fe4f80efc7766877
MD5 hash: 6a0815ce26b4746947a8cdc1bd16a8fd
humanhash: snake-equal-cup-north
File name:WFW91621.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:603'648 bytes
First seen:2023-11-08 14:19:14 UTC
Last seen:2023-11-09 16:25:57 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 12288:bRVlRLAqm510pi1tDDf01bck73cErcDd8/w92Rp3vGCuNOrrn:tVlRLC10w1hfSbckcdHkRdvGCSOrr
Threatray 64 similar samples on MalwareBazaar
TLSH T142D42329F9EAA316D4FECFF58052614447318066AB10E9AE6CDEB1D1BF6AF541280CD3
TrID 71.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.2% (.EXE) Win64 Executable (generic) (10523/12/4)
6.3% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.3% (.EXE) Win32 Executable (generic) (4505/5/1)
2.0% (.ICL) Windows Icons Library (generic) (2059/9)
Reporter cocaman
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
119
# of downloads :
346
Origin country :
CH CH
Vendor Threat Intelligence
Detection(s):
SecuriteInfo.com.Win32.PWSX-gen.8878.14429.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Сreating synchronization primitives
Creating a window
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/654b9915641154c7e3eed0bc/reports/6da1d49c-d1ed-4c84-9685-5569f9129a15/overview
Verdict:
Malicious
Labled as:
Malware
Link:
https://www.hybrid-analysis.com/sample/4c52fcc759e836699f5b46f6f67d1aa5370b61c2fb72f3cb761f178e07639c96
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:
Malicious
Link:
https://analyze.intezer.com/analyses/b419ffe9-1979-47be-bd7a-dc030851f63e
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1339112
Signature
.NET source code contains potential unpacker
Antivirus detection for URL or domain
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
Multi AV Scanner detection for submitted file
Performs DNS queries to domains with low reputation
Queues an APC in another process (thread injection)
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Writes to foreign memory regions
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/4c52fcc759e836699f5b46f6f67d1aa5370b61c2fb72f3cb761f178e07639c96
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/4c52fcc759e836699f5b46f6f67d1aa5370b61c2fb72f3cb761f178e07639c96/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2023-11-08 14:19:19 UTC
File Type:
PE (.Net Exe)
Extracted files:
5
AV detection:
22 of 38 (57.89%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=jrjpzr2z5a3gth23i33pm7i2uu3qwyoc7nzphs3wd4ly4b3dtsla._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
3230ec344a2ed748c97ea46b2d41a09521bd4f67e605d53384f741eece09f466
Formbook
3ea69a1a0c5cc196a71ab1d7754abe0683813ff321d59d731bb72d2d3d076f3f
Formbook
52314c509cc39d57832c2efc2782ac7fc74448e56a2771989d877d4f9f6adc85
Formbook
900d518389fffe99ee1fd546a9af47aeb109b0d8500139fdb3155d6916afd810
Formbook
a5bea05a2f6c78eef246760dc715dd3fe10b0615ac161efbeb8a2cf6c9836499
Formbook
b5081a6bb5cd550a99f314c6dd7e76cd217473ddfec2f65c1b5ec13a000680b7
Formbook
b5aae370f7b29f63c9dd24562d16b7a77bda593fbe4d2f316046cdb444e343f6
Formbook
d3e71a337d58b6ae1f49be4a5d89258ce11dc33b86c0a6f3ca93c16170dc500c
Formbook
dd6b0535110695ea9fe92bf6eac3e2b98c72b7bd9edbe3ae2ca6a1e4ac348c22
Formbook
e4b2f31e7c9fb2df6cf161898f23653c49d758f8f733e5910b99f3fd998569e0
Formbook
+ 54 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  5/10
Tags:
n/a
Link:
https://tria.ge/reports/231108-rneklacb2x/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of WriteProcessMemory
Program crash
Suspicious use of SetThreadContext
Unpacked files
SH256 hash:
17ca6917db69796d004b3c142df9f60ff523607a289ed513997847a101f6f083
MD5 hash:
07b063d5d707a9fc23750f8ab480eb21
SHA1 hash:
363999bad2513e9c38226bdab1cb67c9a85897f3
Link:
https://www.unpac.me/results/dda80521-4c12-4994-a4e6-cf62c1b69d02/
SH256 hash:
b0e1d5b2d5fb86bf878ddc018f0fb05cbf73fc93c5b18aafd555dd30c0df2c5c
MD5 hash:
14f86f6f68a26a2b2d7e26145f98302b
SHA1 hash:
fa0ec0663235af5fad771ce267885a5e7a6086a2
Link:
https://www.unpac.me/results/dda80521-4c12-4994-a4e6-cf62c1b69d02/
SH256 hash:
34c9fb7360896d01ed22606d34aeed831ce6a91138fd3b90d00d60f51f585797
MD5 hash:
099699a10a328dad36aceae480594b99
SHA1 hash:
f82faf9a8277a66de8b3896d658d631c970653ff
Link:
https://www.unpac.me/results/dda80521-4c12-4994-a4e6-cf62c1b69d02/
SH256 hash:
d01f3dea3851602ba5a0586c60430d286adf6fcc7e17aab080601a66630606e5
MD5 hash:
579197d4f760148a9482d1ebde113259
SHA1 hash:
cf6924eb360c7e5a117323bebcb6ee02d2aec86d
Link:
https://www.unpac.me/results/dda80521-4c12-4994-a4e6-cf62c1b69d02/
SH256 hash:
bfef9eac82e53e8d63bcb3b3022880eaf8f22cbbc6c69f3782b59c438f649f12
MD5 hash:
ddf81912128dd196140e9be656c3a212
SHA1 hash:
51221baf7115f7f2de03cd00b8b25cfde9241a35
Link:
https://www.unpac.me/results/dda80521-4c12-4994-a4e6-cf62c1b69d02/
SH256 hash:
4c52fcc759e836699f5b46f6f67d1aa5370b61c2fb72f3cb761f178e07639c96
MD5 hash:
6a0815ce26b4746947a8cdc1bd16a8fd
SHA1 hash:
b0750c849eb6ab861dfa9176fe4f80efc7766877
Link:
https://www.unpac.me/results/dda80521-4c12-4994-a4e6-cf62c1b69d02/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/4c52fcc759e8/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.85
Link:
https://yomi.yoroi.company/submissions/4c52fcc759e836699f5b46f6f67d1aa5370b61c2fb72f3cb761f178e07639c96

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:DebuggerCheck__GlobalFlags
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerCheck__QueryInfo
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerHiding__Active
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerHiding__Thread
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:Formbook
Create hunting rule
Author:kevoreilly
Description:Formbook Payload
Rule name:maldoc_find_kernel32_base_method_1
Create hunting rule
Author:Didier Stevens (https://DidierStevens.com)
Rule name:maldoc_getEIP_method_1
Create hunting rule
Author:Didier Stevens (https://DidierStevens.com)
Rule name:MD5_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for MD5 constants
Rule name:meth_get_eip
Create hunting rule
Author:Willi Ballenthin
Rule name:meth_stackstrings
Create hunting rule
Author:Willi Ballenthin
Rule name:NET
Create hunting rule
Author:malware-lu
Rule name:pe_imphash
Create hunting rule
Rule name:pe_no_import_table
Create hunting rule
Description:Detect pe file that no import table
Rule name:RIPEMD160_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for RIPEMD-160 constants
Rule name:SEH__vectored
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:SHA1_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA1 constants
Rule name:shellcode
Create hunting rule
Author:nex
Description:Matched shellcode byte patterns
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:Windows_Trojan_Formbook
Create hunting rule
Author:@malgamy12
Rule name:Windows_Trojan_Formbook_1112e116
Create hunting rule
Author:Elastic Security
Rule name:win_formbook_w0
Create hunting rule
Author:@malgamy12

File information

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

Malspam

Formbook

rar 7d2244c0c8fb933e67cf8ca05506073acf86ab58f09e219a9caf823fcc2410a2

Formbook

Executable exe 4c52fcc759e836699f5b46f6f67d1aa5370b61c2fb72f3cb761f178e07639c96

(this sample)

  
Delivery method
Other
  
Dropped by
SHA256 7d2244c0c8fb933e67cf8ca05506073acf86ab58f09e219a9caf823fcc2410a2
  
Dropped by
MD5 a0704acf450ba7a38892a3c2ff4869a9

Comments