MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f281fed414237c484d936802d8bc112995ba6df5c9485207a284b8fc31edf2e6. 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: 15


Intelligence 15 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: f281fed414237c484d936802d8bc112995ba6df5c9485207a284b8fc31edf2e6
SHA3-384 hash: 61b5891881aa935383a9777a9609f1840bdfd97a6ee1779eb53b08a05239bd6de4522733b063e01772d3cf2e222b8557
SHA1 hash: 447792f56ffa0a4d570d9b367837fbacbb57c450
MD5 hash: 9841ea840eb4c5c2e761b161fa0b7ecc
humanhash: harry-uranus-india-oxygen
File name:RFQ 18757 FOR CPUW-1022601_Pdf__.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:1'057'280 bytes
First seen:2022-09-27 13:17:50 UTC
Last seen:2022-09-30 13:22:44 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'658 x AgentTesla, 19'469 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 12288:1S6199Xe8b9ce0kxZf+IF22gMvoBoppQPYwZapxWui4bYzk6LfK1Gg0G4:t1Xu8SP8ZRlvoB+M7ZajWuwzXf8GFG
TLSH T15725F1371BEA8B4BD021757884E1D2F6B3A9CD11E877C2D76BCA6D1FF0894219B60364
TrID 72.5% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.4% (.EXE) Win64 Executable (generic) (10523/12/4)
6.5% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.4% (.EXE) Win32 Executable (generic) (4505/5/1)
2.0% (.EXE) OS/2 Executable (generic) (2029/13)
Reporter GovCERT_CH
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
3
# of downloads :
266
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
RF1_Pdf__.exe
Verdict:
Malicious activity
Analysis date:
2022-09-27 00:59:13 UTC
Tags:
formbook stealer trojan
Link:
https://app.any.run/tasks/1a88a384-5ddd-41d7-aa19-4f6bb1d60f0b

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/313983/
Detection(s):
SecuriteInfo.com.Trojan.PackedNET.389.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Unauthorized injection to a recently created process
Creating a file
Сreating synchronization primitives
Launching a process
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/6332f80d1b571b0fb1f1632f/reports/1892f3b6-c6f5-40a3-baab-dbd6ab28902a/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
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/28d9860d-c7de-4c8c-9293-d8a9736169a8
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1078693
Signature
.NET source code contains potential unpacker
Antivirus detection for URL or domain
Deletes itself after installation
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
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)
Snort IDS alert for network traffic
System process connects to network (likely due to code injection or exploit)
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)
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 711240 Sample: RFQ 18757 FOR CPUW-1022601_... Startdate: 28/09/2022 Architecture: WINDOWS Score: 100 34 Snort IDS alert for network traffic 2->34 36 Malicious sample detected (through community Yara rule) 2->36 38 Antivirus detection for URL or domain 2->38 40 7 other signatures 2->40 8 RFQ 18757 FOR CPUW-1022601_Pdf__.exe 3 2->8         started        process3 file4 22 RFQ 18757 FOR CPUW-1022601_Pdf__.exe.log, ASCII 8->22 dropped 50 Injects a PE file into a foreign processes 8->50 12 RFQ 18757 FOR CPUW-1022601_Pdf__.exe 8->12         started        signatures5 process6 signatures7 52 Modifies the context of a thread in another process (thread injection) 12->52 54 Maps a DLL or memory area into another process 12->54 56 Queues an APC in another process (thread injection) 12->56 15 explorer.exe 12->15 injected process8 dnsIp9 24 www.horizonarena.com 81.17.18.195, 49701, 49702, 49703 PLI-ASCH Switzerland 15->24 26 www.suttazet.com 162.0.228.17, 49704, 49705, 49706 NAMECHEAP-NETUS Canada 15->26 28 4 other IPs or domains 15->28 30 System process connects to network (likely due to code injection or exploit) 15->30 32 Performs DNS queries to domains with low reputation 15->32 19 msiexec.exe 13 15->19         started        signatures10 process11 signatures12 42 Tries to steal Mail credentials (via file / registry access) 19->42 44 Tries to harvest and steal browser information (history, passwords, etc) 19->44 46 Deletes itself after installation 19->46 48 2 other signatures 19->48
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/f281fed414237c484d936802d8bc112995ba6df5c9485207a284b8fc31edf2e6/
Threat name:
Win32.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2022-09-26 03:22:30 UTC
File Type:
PE (.Net Exe)
Extracted files:
13
AV detection:
22 of 26 (84.62%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=6ka75vauen6eqtmtnabnrparfgk3u3pvzfefeb5cqs4pympn6lta._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:formbook family:xloader campaign:o6ho loader rat spyware stealer trojan
Link:
https://tria.ge/reports/220927-qjybgaefel/
Behaviour
Checks processor information in registry
Enumerates system info in registry
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
Drops file in System32 directory
Suspicious use of SetThreadContext
Checks computer location settings
Loads dropped DLL
Reads user/profile data of web browsers
Formbook
Xloader
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/cc7728fb-6f82-469f-90ae-852304ffc669
Unpacked files
SH256 hash:
d30dcab8f4c2f46b0c0ba4ba31dd87a18bea3b7159992de18d5b819411b832c7
MD5 hash:
b8492da9231f3b994ce855d9f5f3134a
SHA1 hash:
be4efb9458ffc1f9a14ac2960d607c9a9603d953
Detections:
XLoader
Create hunting rule
win_formbook_auto
Create hunting rule
win_formbook_g0
Create hunting rule
Link:
https://www.unpac.me/results/df57e8a5-ccd9-43cb-9861-14288c81798e/
Parent samples :
0225459bb8ea76c802e15479e006d7df265038fa9b789eb91c61ac7f4f1ce56e
f281fed414237c484d936802d8bc112995ba6df5c9485207a284b8fc31edf2e6
fa2b2fad1130583a57ba13918330a62a38ce0429d92cc98cdc23b5f69bf491d1
7a891f05ccb7ae90f90914f8238e754aadb4cfc16d19231a99efd1e09e244064
SH256 hash:
a0998b14f1cb5cadb26a6c966b50cdef03c32e9479ea9b59d352326eeb2c82ae
MD5 hash:
516baa2f79e506963998997c1eed921d
SHA1 hash:
0e4e4b806369043f2cc0476e1c922143e2d9abfa
Link:
https://www.unpac.me/results/df57e8a5-ccd9-43cb-9861-14288c81798e/
SH256 hash:
2470b39032f6182252039c88199016566b0de30c6aa02163a143427afedd12af
MD5 hash:
c3a1924684ca30ed22234ce1d9111dfc
SHA1 hash:
7347706241422758c06440fd6044ae4e042b456b
Link:
https://www.unpac.me/results/df57e8a5-ccd9-43cb-9861-14288c81798e/
SH256 hash:
ba9cdaf870c632fc45d641333886a47678957e149b5322d576d921a4bf25cbc1
MD5 hash:
ab0d9f9ce39a939d7ba191693af309e3
SHA1 hash:
5803599b717e165f0a8388e5f19aeabc2a13d64a
Link:
https://www.unpac.me/results/df57e8a5-ccd9-43cb-9861-14288c81798e/
SH256 hash:
0699d7d677e053ef111ce3384390fbc0e0d3466de0b453b8f53b4d79a4d4877c
MD5 hash:
4ec7bfc5a9d7b1a8800991ed0a52b8ad
SHA1 hash:
5299b635981a6b4ce88cf7c1a9f34c313717da42
Link:
https://www.unpac.me/results/df57e8a5-ccd9-43cb-9861-14288c81798e/
SH256 hash:
e20ec8f3c957bcb6a194ef688bae8af2015cfffb20e7baf8b2114d7b70ade4ee
MD5 hash:
35cb29046968faca7f3f3b4463449b6c
SHA1 hash:
088c8c30ec1bece0a4b5bbfe3982b073f8b95598
Link:
https://www.unpac.me/results/df57e8a5-ccd9-43cb-9861-14288c81798e/
SH256 hash:
f281fed414237c484d936802d8bc112995ba6df5c9485207a284b8fc31edf2e6
MD5 hash:
9841ea840eb4c5c2e761b161fa0b7ecc
SHA1 hash:
447792f56ffa0a4d570d9b367837fbacbb57c450
Link:
https://www.unpac.me/results/df57e8a5-ccd9-43cb-9861-14288c81798e/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.65
Link:
https://yomi.yoroi.company/submissions/f281fed414237c484d936802d8bc112995ba6df5c9485207a284b8fc31edf2e6

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.

Malspam

Formbook

iso bf76a4636fbe2a304c8bd441e1e06118932ccb411f7323c6e5e2dde1a952eee2

Formbook

Executable exe f281fed414237c484d936802d8bc112995ba6df5c9485207a284b8fc31edf2e6

(this sample)

  
Dropped by
formbook
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/313983/
  
Dropped by
SHA256 bf76a4636fbe2a304c8bd441e1e06118932ccb411f7323c6e5e2dde1a952eee2
  
Dropped by
MD5 3d30141e56b312865d09680d0e461756

Comments