MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b1b671842ea0b17a67e78741ceb401ccee0907e55c7a365aa78bf17aebe8e356. 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: b1b671842ea0b17a67e78741ceb401ccee0907e55c7a365aa78bf17aebe8e356
SHA3-384 hash: 410d0f2ce7ac967886ff624ccb8b959f6ade83ae148349283e347a1abfaf1f908fad7c666bb0e4b28b17a1bbb98fb53b
SHA1 hash: 614abbc86775816cc67dca02c810c186506b349c
MD5 hash: 1da49e7604c770d3ece672a4f007f2c2
humanhash: quiet-washington-freddie-bakerloo
File name:Payment against document.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:820'736 bytes
First seen:2022-05-26 11:17:49 UTC
Last seen:2022-05-26 12:03:44 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'744 x AgentTesla, 19'609 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 24576:BRZbHoVXI49+KcPlTKvHUZ/WktnXb19u:BRA9sKcdevA/p3u
TLSH T1C905E1983690719FC5A7CE37D9A81C10AA31B9BB570BD30BA453215CAD0EA9FCF115F2
TrID 63.0% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
11.3% (.SCR) Windows screen saver (13101/52/3)
9.0% (.EXE) Win64 Executable (generic) (10523/12/4)
5.6% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
3.8% (.EXE) Win32 Executable (generic) (4505/5/1)
File icon (PE):PE icon
dhash icon cc8a8accccaaaacc (12 x AgentTesla, 5 x Formbook, 5 x Loki)
Reporter GovCERT_CH
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
317
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
Payment against document.exe
Verdict:
Malicious activity
Analysis date:
2022-05-26 11:20:36 UTC
Tags:
formbook trojan stealer
Link:
https://app.any.run/tasks/292cc81b-18e1-4a5a-b99d-ee31c6abc48a

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/274731/
Detection(s):
SecuriteInfo.com.W32.AIDetectNet.01.20258.9454.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
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:
control.exe obfuscated packed
Link:
https://www.filescan.io/uploads/628f62296eb3ff32632fddf4/reports/1878e3b5-c2f7-4560-8286-08b5aa806d60/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.
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/9de545ed-1608-4244-8ed5-c96197edb707
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1002076
Signature
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Found malware configuration
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
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/b1b671842ea0b17a67e78741ceb401ccee0907e55c7a365aa78bf17aebe8e356/
Threat name:
Win32.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2022-05-26 10:26:15 UTC
File Type:
PE (.Net Exe)
Extracted files:
18
AV detection:
17 of 26 (65.38%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=wg3hdbboucyxuz7hq5a45nabztxasb7flr5dmwvhrpyxv27i4nla._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:amdf rat spyware stealer suricata trojan
Link:
https://tria.ge/reports/220526-nd9q7sahe4/
Behaviour
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:
f44e4c73d593278c11ac37c4166f7a85493ed0b8b41ad06d0c696839b659bca6
MD5 hash:
592614a0b186e4050c6630875c9f318a
SHA1 hash:
b562e180e2d3cdc6c7baaff7a818aee0fe6e1a6d
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/9c27c473-58d0-4f16-9d16-ada988284cb0/
Parent samples :
ff4e7b32b4c4ac0f5fbdd12b9c2ffd894fe647d1d22fe009035cc307a540322d
edc8375d2a96c96eb0d3b8c7acfba4a9ba7f602deb4a2738d4ff07f0ee129e98
f083cca9a8f0665f33ea6d3a133e5e8fcfc8fc2e4828ddcbd8c035344e7c5667
fbcdf1532a2095924283e9d60f013d107036cdebce2772bfaf41b429931fdf58
fa318879db358e490dc763417711d144a17bd5ad8061821a1e820521ebefac16
b1b671842ea0b17a67e78741ceb401ccee0907e55c7a365aa78bf17aebe8e356
363c3288efc15bdba3db28988766e6554fca04e6bcb49e094f7a521388016fe8
SH256 hash:
fd6b9bc97aa178c91fa931736735398c069b8c5e7695ddcf1fd37ca27b4d348f
MD5 hash:
8217676dace90a81953749963efcde63
SHA1 hash:
7d99e0583fece26dbaf99b87169f1fef0a086914
Link:
https://www.unpac.me/results/9c27c473-58d0-4f16-9d16-ada988284cb0/
SH256 hash:
742bfb49cf3904931ce87b810106611867a6b4b7a8d69f308e21d9d221365b3d
MD5 hash:
81cf021b05eebb622775151dc87f2aa1
SHA1 hash:
480c103ac6e66fe00b488d286832dc89eee088a6
Link:
https://www.unpac.me/results/9c27c473-58d0-4f16-9d16-ada988284cb0/
SH256 hash:
d0c82efd25b03b36b1acc7e32417cd16a46d4a2bd288c36176521b4c173a36ec
MD5 hash:
df33e50f78ad6f61fc6a00b02e9ced50
SHA1 hash:
1b8090dcd7592f2442ec28cae8a4adc6f677ca0b
Link:
https://www.unpac.me/results/9c27c473-58d0-4f16-9d16-ada988284cb0/
SH256 hash:
4ee6606be7180c3546ebd087f1033e23d7cc13b83176460c74f54d3a9897c600
MD5 hash:
e5fdeda3f5bb98bd75154c0f4d91c71b
SHA1 hash:
ca6f2f431b79b11d12d7668c89b9e25d176ec61a
Link:
https://www.unpac.me/results/9c27c473-58d0-4f16-9d16-ada988284cb0/
SH256 hash:
b1b671842ea0b17a67e78741ceb401ccee0907e55c7a365aa78bf17aebe8e356
MD5 hash:
1da49e7604c770d3ece672a4f007f2c2
SHA1 hash:
614abbc86775816cc67dca02c810c186506b349c
Link:
https://www.unpac.me/results/9c27c473-58d0-4f16-9d16-ada988284cb0/
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/b1b671842ea0b17a67e78741ceb401ccee0907e55c7a365aa78bf17aebe8e356

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 b1b671842ea0b17a67e78741ceb401ccee0907e55c7a365aa78bf17aebe8e356

(this sample)

  
Dropped by
formbook
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/274731/

Comments