MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a97ce8a55897b2f476c343a3cb5234e94848cdb3a7a815bb1c31c48dfaf794b7. 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 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a97ce8a55897b2f476c343a3cb5234e94848cdb3a7a815bb1c31c48dfaf794b7
SHA3-384 hash: 2dd3a227dd0ed81541bc6e71decf9d3974393fad8116f24690e62be6655da59f044ae8e5a9924663a98994dc3f26ea73
SHA1 hash: bc7622e1a2785822463a043ed965f8121d6e2c1c
MD5 hash: ae15e5fb3e3dc9f1586688d375b83a6d
humanhash: bakerloo-bakerloo-three-florida
File name:Scan93880.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:443'392 bytes
First seen:2021-12-21 12:16:57 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'654 x AgentTesla, 19'464 x Formbook, 12'205 x SnakeKeylogger)
ssdeep 12288:Gq2o73hkyXGFDholt/kk86ILyJ5P91QOyATM:f73h+hKt/JIL65l1QyM
Threatray 12'417 similar samples on MalwareBazaar
TLSH T19E94E06529CAD2DEFC3BFAB10CB139C907F5F2D4E441E4EEFD54249A9892BA00B10572
Reporter GovCERT_CH
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
162
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Scan93880.exe
Verdict:
Malicious activity
Analysis date:
2021-12-21 12:18:35 UTC
Tags:
trojan formbook stealer
Link:
https://app.any.run/tasks/b31e9416-ffef-41fb-b6a7-5948cc188a2b

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/215648/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
DNS request
Sending a custom TCP request
Unauthorized injection to a recently created process
Creating a file
Searching for synchronization primitives
Launching a process
Сreating synchronization primitives
Launching cmd.exe command interpreter
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
obfuscated packed
Link:
https://www.filescan.io/uploads/61c1c5c34ab5c44cbf4b6f9c/reports/187bc7ce-9884-47bb-8e81-ac3fe882a5a6/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/cf9198c0-9f99-4c3d-8227-172e8891e588
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/910920
Signature
.NET source code contains potential unpacker
.NET source code contains very large strings
C2 URLs / IPs found in malware configuration
Found malware configuration
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 domain / URL
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
behaviorgraph top1 signatures2 2 Behavior Graph ID: 543397 Sample: Scan93880.exe Startdate: 21/12/2021 Architecture: WINDOWS Score: 100 35 Multi AV Scanner detection for domain / URL 2->35 37 Found malware configuration 2->37 39 Malicious sample detected (through community Yara rule) 2->39 41 8 other signatures 2->41 10 Scan93880.exe 3 2->10         started        process3 file4 31 C:\Users\user\AppData\...\Scan93880.exe.log, ASCII 10->31 dropped 51 Tries to detect virtualization through RDTSC time measurements 10->51 53 Injects a PE file into a foreign processes 10->53 14 Scan93880.exe 10->14         started        signatures5 process6 signatures7 55 Modifies the context of a thread in another process (thread injection) 14->55 57 Maps a DLL or memory area into another process 14->57 59 Sample uses process hollowing technique 14->59 61 Queues an APC in another process (thread injection) 14->61 17 explorer.exe 14->17 injected process8 process9 19 wlanext.exe 17->19         started        signatures10 43 Self deletion via cmd delete 19->43 45 Modifies the context of a thread in another process (thread injection) 19->45 47 Maps a DLL or memory area into another process 19->47 49 Tries to detect virtualization through RDTSC time measurements 19->49 22 explorer.exe 111 19->22         started        25 cmd.exe 1 19->25         started        27 explorer.exe 1 157 19->27         started        process11 dnsIp12 33 192.168.2.1 unknown unknown 22->33 29 conhost.exe 25->29         started        process13
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/a97ce8a55897b2f476c343a3cb5234e94848cdb3a7a815bb1c31c48dfaf794b7/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2021-12-21 09:59:19 UTC
File Type:
PE (.Net Exe)
Extracted files:
5
AV detection:
24 of 28 (85.71%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=vf6orjkys6zpi5wdior4wuru5feertntu6ubloy4ghci36xxss3q._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
02a852aaa839120b0e557629b63a754cb302ebe2f11275d3e4fb68f4f1e70532
Formbook
2f07775ab256b6bd7dc726fdf62f96728f1b1c2f4b9696f633c81c3f4540f30d
Formbook
3662913e3004f6e3811499a9877265b55fd4b99400607d2f4b4168dc2621f1ab
Formbook
76cd2fa50f3435ac673d7ec4bd24d06d3d461df75f968a2b49d6790ac5035655
Formbook
7930bf3f1be9acdf429e2433aa7d0c36985d9a97e580571fee1ffe8cbc0d8f5a
Formbook
8e079aa4afe26627a784ac447071b5dcd460ba1393851199e21da312a6ff2f18
Formbook
8fbd2e80471ac408f76f9a2221d78e29ad5632961161f2cfc4c017d9b4ecbfde
Formbook
dcee55c9896715272cfd344a7a62fe6c5dbe0e61d7d8548beeda46c15bd8e07c
Formbook
dfa895fe8d8da53e7f3c0466a7e88aa5d36f1a781675d03b0c7400847a0b4f6b
Formbook
e22a659b73048b31aba79fce8de22ddd5a287494b763fec8d5779869dfebbf31
Formbook
+ 12'407 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:mh43 rat spyware stealer suricata trojan
Link:
https://tria.ge/reports/211221-pf2daaecaj/
Behaviour
Gathers network information
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
Suspicious use of SetThreadContext
Deletes itself
Formbook Payload
Formbook
suricata: ET MALWARE FormBook CnC Checkin (GET)
Unpacked files
SH256 hash:
3c0bf113aab4e4239b45a472a486551f73b31e8197fac4b03ae2d76a7a822ad7
MD5 hash:
559118ac624bf1006fe97434b4d539d7
SHA1 hash:
f79324d331e05be0a9f27eaf009ef51734966278
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/79e5b944-e2c6-4e69-8e1d-8b1e862df760/
Parent samples :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 hash:
d6c3129fee589e37303f886fa8adbeebd37640ea2dcd1f17fcc2af28bd7481b9
MD5 hash:
5c8ee59e3f328fadb4adbd81047aa808
SHA1 hash:
c319cd37c275a25d915d4893fb469eb2c9035b00
Link:
https://www.unpac.me/results/79e5b944-e2c6-4e69-8e1d-8b1e862df760/
SH256 hash:
79823e47436e129def4fba8ee225347a05b7bb27477fb1cc8be6dc9e9ce75696
MD5 hash:
39f524c1ab0eb76dfd79b2852e5e8c39
SHA1 hash:
428018e1701006744e34480b0029982a76d8a57d
Link:
https://www.unpac.me/results/79e5b944-e2c6-4e69-8e1d-8b1e862df760/
SH256 hash:
a97ce8a55897b2f476c343a3cb5234e94848cdb3a7a815bb1c31c48dfaf794b7
MD5 hash:
ae15e5fb3e3dc9f1586688d375b83a6d
SHA1 hash:
bc7622e1a2785822463a043ed965f8121d6e2c1c
Link:
https://www.unpac.me/results/79e5b944-e2c6-4e69-8e1d-8b1e862df760/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/a97ce8a55897/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.71
Link:
https://yomi.yoroi.company/submissions/a97ce8a55897b2f476c343a3cb5234e94848cdb3a7a815bb1c31c48dfaf794b7

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:INDICATOR_SUSPICIOUS_Stomped_PECompilation_Timestamp_InTheFuture
Create hunting rule
Author:ditekSHen
Description:Detect executables with stomped PE compilation timestamp that is greater than local current time
Rule name:pe_imphash
Create hunting rule
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 a97ce8a55897b2f476c343a3cb5234e94848cdb3a7a815bb1c31c48dfaf794b7

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/215648/

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