MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a445c5a7219f02d53032566eeda84c273ff01d6184f476daf78b29fc57603e9a. 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 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a445c5a7219f02d53032566eeda84c273ff01d6184f476daf78b29fc57603e9a
SHA3-384 hash: 1be8f5f61a6cd60659e7b86d71ec597f290bfecb836c3bd3689d750afe42167053a6b49466207e50e12639bc9684251f
SHA1 hash: babb6a5ebb0611fa1e3f4f680545317d0208ac92
MD5 hash: 04403d0ce3bbde4f359ee05bc0905a2c
humanhash: vegan-berlin-kansas-edward
File name:Proof of payment.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:605'184 bytes
First seen:2022-06-30 09:29:55 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'666 x AgentTesla, 19'479 x Formbook, 12'209 x SnakeKeylogger)
ssdeep 12288:MgcnsL2iNOevYxH18LPQXTtNGcd1tWP0tf:M1613v218LST7GgtW8t
TLSH T136D4DF80B367BF76F13663B7784180886776A51E91E6C62A8E9DB4CE35B430108F4F67
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 :
1
# of downloads :
246
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/284562/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Sending a custom TCP request
Launching a process
Creating a process with a hidden window
Launching cmd.exe command interpreter
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/62bd6d56b0578633c8b3b4b7/reports/35c02207-f2d6-4905-8a29-946cac51c02f/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/28a87af7-80af-467a-aad9-2aef7b9f9da1
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1022494
Signature
.NET source code contains potential unpacker
Adds a directory exclusion to Windows Defender
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Initial sample is a PE file and has a suspicious name
Machine Learning detection for dropped file
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 dropped file
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
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 AntiVM3
Yara detected FormBook
Yara detected Generic Downloader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 654992 Sample: Proof of payment.exe Startdate: 30/06/2022 Architecture: WINDOWS Score: 100 42 Malicious sample detected (through community Yara rule) 2->42 44 Antivirus detection for URL or domain 2->44 46 Multi AV Scanner detection for dropped file 2->46 48 13 other signatures 2->48 10 Proof of payment.exe 7 2->10         started        process3 file4 34 C:\Users\user\AppData\...\evfwbhnDDqyZC.exe, PE32 10->34 dropped 36 C:\...\evfwbhnDDqyZC.exe:Zone.Identifier, ASCII 10->36 dropped 38 C:\Users\user\AppData\Local\...\tmp182A.tmp, XML 10->38 dropped 40 C:\Users\user\...\Proof of payment.exe.log, ASCII 10->40 dropped 50 Adds a directory exclusion to Windows Defender 10->50 14 Proof of payment.exe 10->14         started        17 powershell.exe 24 10->17         started        19 schtasks.exe 1 10->19         started        signatures5 process6 signatures7 58 Modifies the context of a thread in another process (thread injection) 14->58 60 Maps a DLL or memory area into another process 14->60 62 Sample uses process hollowing technique 14->62 64 Queues an APC in another process (thread injection) 14->64 21 explorer.exe 14->21 injected 23 conhost.exe 17->23         started        25 conhost.exe 19->25         started        process8 process9 27 msdt.exe 21->27         started        signatures10 52 Modifies the context of a thread in another process (thread injection) 27->52 54 Maps a DLL or memory area into another process 27->54 56 Tries to detect virtualization through RDTSC time measurements 27->56 30 cmd.exe 1 27->30         started        process11 process12 32 conhost.exe 30->32         started       
Detection:
formbook
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Link:
https://mwdb.cert.pl/sample/a445c5a7219f02d53032566eeda84c273ff01d6184f476daf78b29fc57603e9a/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
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Status:
Malicious
First seen:
2022-06-30 06:59:42 UTC
File Type:
PE (.Net Exe)
Extracted files:
18
AV detection:
20 of 26 (76.92%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=urc4ljzbt4bnkmbskzxo3kcme477ahlbqt2hnwxxrmu7yv3ah2na._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:oi28 rat spyware stealer suricata trojan
Link:
https://tria.ge/reports/220630-lgg49abhd3/
Behaviour
Creates scheduled task(s)
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
Enumerates physical storage devices
Suspicious use of SetThreadContext
Checks computer location settings
Deletes itself
Formbook Payload
Formbook
suricata: ET MALWARE FormBook CnC Checkin (GET)
Unpacked files
SH256 hash:
73d579a2b469a0f19a8d3e4be1e4831b84cea77ff3d8a6f3bdb22cd8b854cdfb
MD5 hash:
3248830991e88dd8985dec1b18d20f2f
SHA1 hash:
58a61e4c8011c588c912c3890f8ff9c5cb7c9483
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
FormBook
Create hunting rule
Link:
https://www.unpac.me/results/ce45e6fa-685f-4faf-9dbd-2042338a5210/
Parent samples :
3c6967014b152bce9c9fe1c749e9be7d47638563c820e3ae638e4a8c11fbe667
a445c5a7219f02d53032566eeda84c273ff01d6184f476daf78b29fc57603e9a
SH256 hash:
0cb6aef1fa57d11408e47ae071485ef8f48c2982997b8d74b47a4151d85b978c
MD5 hash:
843aa6edf83bff7b61c6a5369ef41e95
SHA1 hash:
d1bfeec8eaac9a1dacf2f7062ce964d8e7d77085
Link:
https://www.unpac.me/results/ce45e6fa-685f-4faf-9dbd-2042338a5210/
SH256 hash:
1d6a36a0a29704b2b348583b769d6ec7c6faf8de72b06ed0b6af3481535e23f6
MD5 hash:
410bb92d5193b961d2e26cde82c9cfff
SHA1 hash:
87029ec300f1372a0be212ee58355ab6cdaa7538
Link:
https://www.unpac.me/results/ce45e6fa-685f-4faf-9dbd-2042338a5210/
SH256 hash:
16b9fc4700292684bae0ef2da4a4f4b393103771e93c0b48747df8a24af40d59
MD5 hash:
12ae0e4078e6e9da25181468d72b7ef4
SHA1 hash:
3f88feb096debc12d2f72bac4dfe7e799c7bbf36
Link:
https://www.unpac.me/results/ce45e6fa-685f-4faf-9dbd-2042338a5210/
SH256 hash:
5423ba5b82bae2154a5d45542831b12fd759e6417a85fe8f44c791331211546d
MD5 hash:
846a2cd3359a3ad5dcd55d9ea3a0333a
SHA1 hash:
2cc381c2cdd60bcd3c886191997eef3fefade14a
Link:
https://www.unpac.me/results/ce45e6fa-685f-4faf-9dbd-2042338a5210/
SH256 hash:
a445c5a7219f02d53032566eeda84c273ff01d6184f476daf78b29fc57603e9a
MD5 hash:
04403d0ce3bbde4f359ee05bc0905a2c
SHA1 hash:
babb6a5ebb0611fa1e3f4f680545317d0208ac92
Link:
https://www.unpac.me/results/ce45e6fa-685f-4faf-9dbd-2042338a5210/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/a445c5a7219f/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/a445c5a7219f02d53032566eeda84c273ff01d6184f476daf78b29fc57603e9a

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
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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 a445c5a7219f02d53032566eeda84c273ff01d6184f476daf78b29fc57603e9a

(this sample)

  
Dropped by
formbook
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/284562/

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