MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 bc91c7988916b582c31a55f44cbdebcfae416c3f645bf8826485fc358e0ac0e7. 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: 14


Intelligence 14 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: bc91c7988916b582c31a55f44cbdebcfae416c3f645bf8826485fc358e0ac0e7
SHA3-384 hash: b1eea40b88b20bf730f1ac9268b94ee9f9d231f6b02417af14d14c29d39604b63377e94806a57c3101dd6e8ab1f1427f
SHA1 hash: 3edda829f7f3317f7e0226f7dbe0aa80ef1859d0
MD5 hash: ca5cbe1aa3ca8273db77a3e0c1d3daae
humanhash: ten-pasta-wolfram-minnesota
File name:Purchasing.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:1'134'592 bytes
First seen:2022-03-23 10:33:24 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'666 x AgentTesla, 19'479 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 24576:pbW7THKDXNMtx6VRO/Amznr66jipLe3FbjN3vIlm23rw9L:BcD30VRmn+6SLuZN3vIlj3rm
Threatray 14'421 similar samples on MalwareBazaar
TLSH T17B35128C33D80B16D0BD8BB448B25CA907B6BE36BC21F75E9E81B4D659733D0861AD53
File icon (PE):PE icon
dhash icon 7cf6b6aa8ed0e8b4 (18 x Formbook, 3 x SnakeKeylogger, 2 x NanoCore)
Reporter GovCERT_CH
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
194
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/256225/
Detection(s):
Win.Dropper.Jacard-9878052-0
Create hunting rule

Win.Dropper.Formbook-9917440-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a custom TCP request
Unauthorized injection to a recently created process
Creating a file
Launching a process
Launching cmd.exe command interpreter
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
formbook obfuscated packed replace.exe
Link:
https://www.filescan.io/uploads/623af7ea0cd58dbd92deb39b/reports/9a6398b7-4e2a-41b5-95b7-294e09acfb2e/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.
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/962616
Signature
.NET source code contains potential unpacker
C2 URLs / IPs found in malware configuration
Found malware configuration
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)
Modifies the prolog of user mode functions (user mode inline hooks)
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Self deletion via cmd delete
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to detect virtualization through RDTSC time measurements
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/bc91c7988916b582c31a55f44cbdebcfae416c3f645bf8826485fc358e0ac0e7/
Threat name:
ByteCode-MSIL.Spyware.Noon
Create hunting rule
Status:
Malicious
First seen:
2022-03-23 05:40:00 UTC
File Type:
PE (.Net Exe)
Extracted files:
37
AV detection:
21 of 26 (80.77%)
Threat level:
  2/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=xsi4pgejc22yfqy2kx2ezpplz6xec3b7mrn7rateqx6dldqkydtq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
2c81b04d9509cf29e05309b84972fa9bf47b34bdf64032ade464fcc55a54a1b8
Formbook
6d1ae3278059d592ae7c4426df9456553b8abfbc3bd90ce0f8d1792e94ae95c2
Formbook
8392408d685d10ddf024a7e4f47976e03a00fd787bd4ee0932766c4b9b278bc0
Formbook
8f9190278b3ec347a0b8e13522ef2d5f434f5ecbc7872aafed235330dbbedcc5
Formbook
9621e6459dc138fb11bc279b6583fc68eed0db7b284e198c74dda8385db8ce0d
Formbook
c6a3fd36f07d97fb287fbac946ae8b8d12d1fcde36fa87395de79d59f0c3fb77
Formbook
d0d6b8f342215efb1adba27088bb7f6dfe14dd3734612aecf1124b121c3a7cc6
Formbook
e4d0ebfd2e92b3848aa302ff71782e2bb7b55b1340f340c89e263e9d1a2a6987
Formbook
+ 14'411 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:d1n3 rat spyware stealer suricata trojan
Link:
https://tria.ge/reports/220323-ml6h3sghaq/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Program crash
Suspicious use of SetThreadContext
Formbook Payload
Formbook
suricata: ET MALWARE FormBook CnC Checkin (GET)
Unpacked files
SH256 hash:
7b67f368c4fd94831894849ec9fa44cd97947d04ed7793bcc95786b1cd0a53b8
MD5 hash:
c377124183d9f07def0b0610f1b61af3
SHA1 hash:
948a9c900e1bf72aeea33a1b31e534863dd74c6a
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/1e76273a-c019-43c4-b98c-88d87c421ba8/
Parent samples :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 hash:
dc5c057b0ee1eb079cf189762aac69f0d86338ea18795dc4fbf7ed9b5a45c2eb
MD5 hash:
4103ed94f4747b30e166cf3c25416f47
SHA1 hash:
d553a67056e94f60d621ca42dcecd6d93f9ef1ad
Link:
https://www.unpac.me/results/1e76273a-c019-43c4-b98c-88d87c421ba8/
SH256 hash:
d28ba05225b16ec1bb3e232ecf816a901356a65305818ec05f0704b783e4324a
MD5 hash:
ef7ee50f7ff90e1ab16f8a041794b41c
SHA1 hash:
782964d3fd068f400d963572be5736c0974074f2
Link:
https://www.unpac.me/results/1e76273a-c019-43c4-b98c-88d87c421ba8/
SH256 hash:
bc03c432b06593e25efadadc7670faf8cbec389b5884b6972e280a866fb75dd4
MD5 hash:
6f275733b48db902c8ff2f761d6b92c8
SHA1 hash:
60348b01316dff4ae6303ba35e3ad1ee004ea079
Link:
https://www.unpac.me/results/1e76273a-c019-43c4-b98c-88d87c421ba8/
SH256 hash:
bc91c7988916b582c31a55f44cbdebcfae416c3f645bf8826485fc358e0ac0e7
MD5 hash:
ca5cbe1aa3ca8273db77a3e0c1d3daae
SHA1 hash:
3edda829f7f3317f7e0226f7dbe0aa80ef1859d0
Link:
https://www.unpac.me/results/1e76273a-c019-43c4-b98c-88d87c421ba8/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/bc91c7988916/report/overview.html
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/bc91c7988916b582c31a55f44cbdebcfae416c3f645bf8826485fc358e0ac0e7

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

Executable exe bc91c7988916b582c31a55f44cbdebcfae416c3f645bf8826485fc358e0ac0e7

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/256225/

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