MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b5081a6bb5cd550a99f314c6dd7e76cd217473ddfec2f65c1b5ec13a000680b7. 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 22 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b5081a6bb5cd550a99f314c6dd7e76cd217473ddfec2f65c1b5ec13a000680b7
SHA3-384 hash: 278196a0af478aebfa07556d0fdf701b76b9891d23e30030c1857b0cd445eeebf381428157fd722c19fe6764d9ebb818
SHA1 hash: 683e13d743f2d9f728fb91ba4a14c7747892f752
MD5 hash: cc1ed5e76151391f2b04d9c3101978c5
humanhash: venus-nuts-july-mobile
File name:PO 876-1057.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:812'616 bytes
First seen:2023-11-03 07:04:54 UTC
Last seen:2023-11-03 08:22:57 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'740 x AgentTesla, 19'600 x Formbook, 12'241 x SnakeKeylogger)
ssdeep 24576:drpRB5aT0VhGHxcECMzoIoekZoROCuDpc:1pRB5abHxGMzKZhCuFc
Threatray 138 similar samples on MalwareBazaar
TLSH T1C605BE12B99ECEE1C29E57BBD696C414436DED71B652DE0834BE33D8CB733A2D900606
TrID 67.7% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
9.7% (.EXE) Win64 Executable (generic) (10523/12/4)
6.0% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.6% (.EXE) Win16 NE executable (generic) (5038/12/1)
4.1% (.EXE) Win32 Executable (generic) (4505/5/1)
File icon (PE):PE icon
dhash icon 010e7eacac9e2e01 (3 x Formbook)
Reporter cocaman
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
3
# of downloads :
295
Origin country :
CH CH
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/457902/
Detection(s):
SecuriteInfo.com.Win32.PWSX-gen.5717.9099.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Launching a process
Searching for the window
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Сreating synchronization primitives
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
89%
Tags:
overlay packed
Link:
https://www.filescan.io/uploads/65449ba0b95974e8222a1230/reports/78b648ec-04c0-49c2-af68-17403effa8c9/overview
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/b5081a6bb5cd550a99f314c6dd7e76cd217473ddfec2f65c1b5ec13a000680b7
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
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/692be530-4e90-4e99-907f-406679cf4329
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1336415
Signature
.NET source code contains potential unpacker
Antivirus detection for URL or domain
Initial sample is a PE file and has a suspicious name
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 domain / URL
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 detect sandboxes and other dynamic analysis tools (process name or module or function)
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 Costura Assembly Loader
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1336415 Sample: PO_876-1057.exe Startdate: 03/11/2023 Architecture: WINDOWS Score: 100 26 www.winenglish.net 2->26 28 www.thejourneywithpavl.com 2->28 30 22 other IPs or domains 2->30 46 Multi AV Scanner detection for domain / URL 2->46 48 Malicious sample detected (through community Yara rule) 2->48 50 Antivirus detection for URL or domain 2->50 52 7 other signatures 2->52 10 PO_876-1057.exe 3 2->10         started        signatures3 process4 signatures5 54 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 10->54 56 Injects a PE file into a foreign processes 10->56 13 PO_876-1057.exe 10->13         started        process6 signatures7 58 Maps a DLL or memory area into another process 13->58 16 FFvylVSKkFCHTuasQE.exe 13->16 injected process8 process9 18 ARP.EXE 13 16->18         started        signatures10 38 Tries to steal Mail credentials (via file / registry access) 18->38 40 Tries to harvest and steal browser information (history, passwords, etc) 18->40 42 Writes to foreign memory regions 18->42 44 3 other signatures 18->44 21 FFvylVSKkFCHTuasQE.exe 18->21 injected 24 firefox.exe 18->24         started        process11 dnsIp12 32 parkingpage.namecheap.com 91.195.240.19, 49767, 49768, 49769 SEDO-ASDE Germany 21->32 34 www.jefw392.top 160.124.250.92, 49759, 49760, 49761 POWERLINE-AS-APPOWERLINEDATACENTERHK South Africa 21->34 36 13 other IPs or domains 21->36
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/b5081a6bb5cd550a99f314c6dd7e76cd217473ddfec2f65c1b5ec13a000680b7
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/b5081a6bb5cd550a99f314c6dd7e76cd217473ddfec2f65c1b5ec13a000680b7/
Threat name:
Win32.Trojan.Swotter
Create hunting rule
Status:
Malicious
First seen:
2023-11-03 02:27:36 UTC
File Type:
PE (.Net Exe)
Extracted files:
6
AV detection:
21 of 37 (56.76%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=wuebu25vzvkqvgptctdn27twzuqxi46573bpmxa3l3atuaagqc3q._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
009db41ad28b09fb48d62e80d806db54b28ecefe0e5ef4478a4f52b081dbc9f5
Formbook
08c5f44d57f5ccc285596b3d9921bf7fbbbf7f9a827bb3285a800e4c9faf6731
Formbook
82e2999475b441f03d417b5ee9df2615ec04693e11c15fd5f6c1e444293b85e9
Formbook
8ba0b135c0f49d0f5728abf76685df7106c3ac2532b604123a34a238102cdabb
Formbook
a5bea05a2f6c78eef246760dc715dd3fe10b0615ac161efbeb8a2cf6c9836499
Formbook
a683413d05731a6b164b6d9d0bfd9b53b64ab47c0124a4f8047e1f6206e981e1
Formbook
c5bf13f324052f8e3240024494c7c4bf809e3c423a59fabd0cd067e01a990ee6
Formbook
da92f3184a36b6b1be15d1e93be7c31d173769241d1f3dd98bcfc22796fd9e69
Formbook
e4b2f31e7c9fb2df6cf161898f23653c49d758f8f733e5910b99f3fd998569e0
Formbook
+ 128 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  5/10
Tags:
n/a
Link:
https://tria.ge/reports/231103-hwg61sfg37/
Behaviour
Suspicious use of AdjustPrivilegeToken
Suspicious use of UnmapMainImage
Suspicious use of WriteProcessMemory
Modifies Internet Explorer settings
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Program crash
Suspicious use of SetThreadContext
Unpacked files
SH256 hash:
ca05bf8d9cd7dc3b711b7c0a7fd8286a20a329377780bc1d5cbb699f361fca93
MD5 hash:
a3e94c204829ba0ca80dd45403d1b12f
SHA1 hash:
cd807e3ddb77f5a800e53d32f54798d66abf5783
Link:
https://www.unpac.me/results/54459f2d-ae19-4931-8983-1429151fe3ab/
SH256 hash:
76774c008dcb53cd38f54e2db9d8ee9d1d571ac4cc822c758f1a656b2522d183
MD5 hash:
3a76bb4b358850b3d57102619fed8805
SHA1 hash:
bc623c97bedc6f964e533c41dae12245831066ed
Link:
https://www.unpac.me/results/54459f2d-ae19-4931-8983-1429151fe3ab/
SH256 hash:
b5a5cdc5dde461e309a62faa432746b7552af9f4866dffc33f6f02313faa6278
MD5 hash:
bf208aeaf0ff4044d2c92c8e97310942
SHA1 hash:
4df706b24a85f4a6431f792b4938e55c9dcc2b39
Link:
https://www.unpac.me/results/54459f2d-ae19-4931-8983-1429151fe3ab/
SH256 hash:
3ac8287e539dcfa17b502e06294d2cfb811745d5d0fca3e057ce825c0e76c3d4
MD5 hash:
01974e942e7bf13babd00ba97772a4cb
SHA1 hash:
4d04958c97f9f129bb708b24fb8045616c6358cf
Link:
https://www.unpac.me/results/54459f2d-ae19-4931-8983-1429151fe3ab/
SH256 hash:
19efdf03cb94895935225795f68bb9abfded1869687367013b8b4eee3cc99372
MD5 hash:
4e29f75c0c51b9dec76955f0382d9541
SHA1 hash:
4899aa8e3f57339cbaec8faab777897a76fe1c3a
Link:
https://www.unpac.me/results/54459f2d-ae19-4931-8983-1429151fe3ab/
SH256 hash:
ff8a1ae3e6603bc059c324ad0416f52e53f9ddd8655a825bfe5b4b0332d40db1
MD5 hash:
a18077ee344bf14618cd546485ef163e
SHA1 hash:
07f00d9adf827c329da5a29d62404a75f7fd5acf
Link:
https://www.unpac.me/results/54459f2d-ae19-4931-8983-1429151fe3ab/
SH256 hash:
b5081a6bb5cd550a99f314c6dd7e76cd217473ddfec2f65c1b5ec13a000680b7
MD5 hash:
cc1ed5e76151391f2b04d9c3101978c5
SHA1 hash:
683e13d743f2d9f728fb91ba4a14c7747892f752
Link:
https://www.unpac.me/results/54459f2d-ae19-4931-8983-1429151fe3ab/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/b5081a6bb5cd/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/b5081a6bb5cd550a99f314c6dd7e76cd217473ddfec2f65c1b5ec13a000680b7

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: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_Digital_Certificate
Create hunting rule
Author:albertzsigovits
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:PE_Potentially_Signed_Digital_Certificate
Create hunting rule
Author:albertzsigovits
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

zip e8e81093cd010071c77404527269918ccc4cd59c23713cba8954c91abde4ee28

Formbook

Executable exe b5081a6bb5cd550a99f314c6dd7e76cd217473ddfec2f65c1b5ec13a000680b7

(this sample)

  
Delivery method
Other
  
Dropped by
SHA256 e8e81093cd010071c77404527269918ccc4cd59c23713cba8954c91abde4ee28
Cape
Cape
https://www.capesandbox.com/analysis/457902/
  
Dropped by
MD5 4f64ed2d92f8cf783e3da668424e8eea

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