MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 3550ff88757875f1e8566d7855eacb36fa3213a1537d4125555bc71a88d55018. 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: 13


Intelligence 13 IOCs YARA 1 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 3550ff88757875f1e8566d7855eacb36fa3213a1537d4125555bc71a88d55018
SHA3-384 hash: 549f713c867676b540f345559de10e26830c0e8a2b28d27e884bb2c60e1f14b42b2f200b8b44921a85bae4eb5e82afbe
SHA1 hash: bd9417773fe77a9808842443ed22ca191e19591a
MD5 hash: 74909265fcee8ead458fe12ac3fe6941
humanhash: nine-utah-december-single
File name:purchase order doc.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:710'656 bytes
First seen:2021-02-08 14:31:13 UTC
Last seen:2021-02-08 17:06:10 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'661 x AgentTesla, 19'474 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 12288:NhZi970Oz6hGyBPsLc0AMd9aJwSzMNoFEosD40YTcdcv5nhZAz+dpfJSR:XZ7RsxAMdMaEKoF50Ndcpf3pfk
Threatray 3'804 similar samples on MalwareBazaar
TLSH 42E4E13223E8DF46D1BE77B80571922063F9E6569325C30DBDAC14CC4E3AEC5A6927D2
Reporter James_inthe_box
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
148
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
purchase order doc.exe
Verdict:
Malicious activity
Analysis date:
2021-02-08 14:39:42 UTC
Tags:
trojan formbook stealer
Link:
https://app.any.run/tasks/f215b3ef-b0b7-4afd-b61f-74a7f5271354

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/116060/
Detection(s):
Sanesecurity.Rogue.0hr.20210208-0312.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Adding an access-denied ACE
Creating a file in the %temp% directory
Launching a process
Creating a process with a hidden window
Deleting a recently created file
Unauthorized injection to a recently created process
Creating a file
Launching cmd.exe command interpreter
Enabling autorun by creating a file
Unauthorized injection to a system process
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/601878
Signature
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
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 dropped file
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Sigma detected: Scheduled temp file as task from temp location
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
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 detect virtualization through RDTSC time measurements
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected AntiVM_3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 349955 Sample: purchase order  doc.exe Startdate: 08/02/2021 Architecture: WINDOWS Score: 100 39 www.reallycoolmask.com 2->39 41 www.andredeklerk.com 2->41 43 reallycoolmask.com 2->43 51 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->51 53 Malicious sample detected (through community Yara rule) 2->53 55 Multi AV Scanner detection for dropped file 2->55 57 8 other signatures 2->57 11 purchase order  doc.exe 7 2->11         started        signatures3 process4 file5 33 C:\Users\user\AppData\...\qtgBYbOVySjKZ.exe, PE32 11->33 dropped 35 C:\Users\user\AppData\Local\...\tmp85CF.tmp, XML 11->35 dropped 37 C:\Users\user\...\purchase order  doc.exe.log, ASCII 11->37 dropped 67 Injects a PE file into a foreign processes 11->67 15 purchase order  doc.exe 11->15         started        18 schtasks.exe 1 11->18         started        signatures6 process7 signatures8 69 Modifies the context of a thread in another process (thread injection) 15->69 71 Maps a DLL or memory area into another process 15->71 73 Sample uses process hollowing technique 15->73 75 Queues an APC in another process (thread injection) 15->75 20 explorer.exe 15->20 injected 24 conhost.exe 18->24         started        process9 dnsIp10 45 www.brpodiatrist2.com 162.209.66.142, 49747, 80 RMH-14US United States 20->45 47 www.sanguoban.com 154.201.177.118, 49753, 80 POWERLINE-AS-APPOWERLINEDATACENTERHK Seychelles 20->47 49 5 other IPs or domains 20->49 59 System process connects to network (likely due to code injection or exploit) 20->59 26 wlanext.exe 20->26         started        signatures11 process12 signatures13 61 Modifies the context of a thread in another process (thread injection) 26->61 63 Maps a DLL or memory area into another process 26->63 65 Tries to detect virtualization through RDTSC time measurements 26->65 29 cmd.exe 1 26->29         started        process14 process15 31 conhost.exe 29->31         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/3550ff88757875f1e8566d7855eacb36fa3213a1537d4125555bc71a88d55018/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2021-02-08 01:16:05 UTC
File Type:
PE (.Net Exe)
Extracted files:
44
AV detection:
22 of 29 (75.86%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=gvip7cdvpb27d2cwnv4fl2wlg35dee5bkn6ucjkvlpdrvcgvkama._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
049bc8851afea3c0697d9c238cc2bfe6952ce8b74f89f5a0d022f19236229276
Formbook
3e10aebd7d43b95b74804dfd6619965ca3a360812f8a2fa67adb5b246e35d273
Formbook
6d44f8ab6e901e6a53350be7fb31f0f2bf50678440707adf46346c47c39fe91d
Formbook
7c8c0bb9a552f62aa1ef1e5c037ef17b2064055d15025eea8c6b2b5ccd54f10e
Formbook
800d8d254df93706903d11c9d97e4456294a4af1d600292206d273f57d4ce889
Formbook
83afca2bbcf01987559d5854df63d3862c931f9ac528a62d0111e78a6e7cefbe
Formbook
afaeffcfe0a6e4accf49f860a694f14ff25a44746b3413bbbb243546fee93717
Formbook
bdfce3522a6b59ac31c4912026f03f3f89bd912be68e1f596f9f2ea111a643ab
Formbook
c8c864915e84ba7ec98eed5ed70893bcb5b328e59751694595a71b303ea587aa
Formbook
f0998181a413c33d7696007625fdaa39855e454ef248ca2f2368ff2618468271
Formbook
+ 3'794 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook ransomware rat spyware stealer trojan
Link:
https://tria.ge/reports/210208-9cpcx879px/
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of UnmapMainImage
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Deletes itself
Formbook Payload
Formbook
Malware Config
C2 Extraction:
http://www.brasilseo.com/bft/
Unpacked files
SH256 hash:
d24e66e58c2c85b4f7ed37422e189f85fc64cfdc4acecfca8324c6d0c57eaba7
MD5 hash:
1d3bee0d88895bc916980c8e277e950e
SHA1 hash:
912db89d8fde5a72e286810dfa5177a6f8e202e9
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/e22a6186-b64f-4de5-936f-a7b28b8bb27e/
Parent samples :
7c8c0bb9a552f62aa1ef1e5c037ef17b2064055d15025eea8c6b2b5ccd54f10e
cddf575d340c695e513d03330965f716f8ddf17f5d2fb0929fbb78875653d8b7
72c822dc6059af0f57f65a9e52a509e30caefe4225367c3eec186f013134d54f
48d3a3e4c8e3ee8168d1f0b24f1d57ba7f7f66628f7f81ee9dab9f9f26aadfd7
c8c864915e84ba7ec98eed5ed70893bcb5b328e59751694595a71b303ea587aa
3550ff88757875f1e8566d7855eacb36fa3213a1537d4125555bc71a88d55018
726a32ca7c910d88e59d2d2364def087b00b9c869ef29926016884def6457b6b
cc768b0d5c345d446eacb21922c6561e763015cc6782fdde5a051e1d4fe56acf
2a5b157dc8c983424ebc3a69962649236e17001585de6280cf11f4d94742d28e
2dce266f65b63c927ddf95e71bb0d226eb1c8b260ba8a6965ba1352e9fa837af
SH256 hash:
ed061cb5bf87c3afa6384c4d332e8a89b8adf183280dcf42ae98e347ab4d8835
MD5 hash:
2777df25b24b143d226e8f096937abe8
SHA1 hash:
8df67b9af82932740683124d7f7ed207aa025c06
Link:
https://www.unpac.me/results/e22a6186-b64f-4de5-936f-a7b28b8bb27e/
SH256 hash:
6ac8dd2af25c39df87fca938dcda19e8c2bbc5f50a3bba82ddd1249556325bf6
MD5 hash:
6cacdf1104346c0e1e07220f0a7e82f0
SHA1 hash:
f70dde8a8f1c8caac7564e5acc36f306f86c48bd
Link:
https://www.unpac.me/results/e22a6186-b64f-4de5-936f-a7b28b8bb27e/
SH256 hash:
3550ff88757875f1e8566d7855eacb36fa3213a1537d4125555bc71a88d55018
MD5 hash:
74909265fcee8ead458fe12ac3fe6941
SHA1 hash:
bd9417773fe77a9808842443ed22ca191e19591a
Link:
https://www.unpac.me/results/e22a6186-b64f-4de5-936f-a7b28b8bb27e/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Kryptik
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/3550ff88757875f1e8566d7855eacb36fa3213a1537d4125555bc71a88d55018

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_InTheFu
Create hunting rule
Author:ditekSHen
Description:Detect executables with stomped PE compilation timestamp that is greater than local current time

File information

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

  
Delivery method
Other
Cape
Cape
https://www.capesandbox.com/analysis/116060/

Comments