MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a36ca6406a273cb0d73b0c76e66c559cd140c1941024b37f6e89a10ba4a0e3d8. 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 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a36ca6406a273cb0d73b0c76e66c559cd140c1941024b37f6e89a10ba4a0e3d8
SHA3-384 hash: c27ca9396b61840f4effdc5d49582a69fd2c8d10293019804402537c795adb97f18b005ac35d5f3f895b1f9442896de7
SHA1 hash: c75cbadc023bfae3c48419d0994abc00bd381e0a
MD5 hash: 7cc26a7a0831c29c9d08a32cfd4dfdbc
humanhash: uranus-stream-eighteen-king
File name:OSA1I5345_invoicepdf.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:312'707 bytes
First seen:2022-05-25 06:15:14 UTC
Last seen:2022-05-25 06:36:47 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 55f3dfd13c0557d3e32bcbc604441dd3 (124 x Formbook, 18 x Loki, 13 x AgentTesla)
ssdeep 6144:s0Y/sY+kJ6d+5KH6VB/Ibci8+EzEAieCzzRyRIeMMoj9ghLw:msY+q6ddsIYV+E34z6EMML
TLSH T1116412EBA29045E3C03636B34EB7BD18A3B3AD006142E2472B5CBE5A947B2D3445774F
TrID 92.9% (.EXE) NSIS - Nullsoft Scriptable Install System (846567/2/133)
3.4% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13)
1.1% (.EXE) Win64 Executable (generic) (10523/12/4)
0.7% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
0.5% (.EXE) Win16 NE executable (generic) (5038/12/1)
File icon (PE):PE icon
dhash icon 130f2b0f17233b13 (2 x GuLoader, 1 x Formbook)
Reporter lowmal3
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
260
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
OSA1I5345_invoicepdf.exe
Verdict:
Malicious activity
Analysis date:
2022-05-25 06:57:36 UTC
Tags:
installer formbook trojan stealer
Link:
https://app.any.run/tasks/98338a84-c614-4fc8-8d61-686e26604eec

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/274355/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a file in the %temp% directory
Creating a window
Creating a process from a recently created file
Launching a process
Сreating synchronization primitives
Launching cmd.exe command interpreter
Searching for synchronization primitives
Setting browser functions hooks
Unauthorized injection to a recently created process by context flags manipulation
Unauthorized injection to a system process
Unauthorized injection to a browser process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
control.exe overlay packed shell32.dll
Link:
https://www.filescan.io/uploads/628dc975eba388bb868257e0/reports/be01fb3f-16de-4315-8661-d994ef494fa8/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.
Malware family:
Formbook
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/672eed7e-0d26-4b81-8282-9753ca09a0f5
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1001289
Signature
C2 URLs / IPs found in malware configuration
Executable has a suspicious name (potential lure to open the executable)
Found malware configuration
Initial sample is a PE file and has a suspicious name
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 virtualization through RDTSC time measurements
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 633785 Sample: OSA1I5345_invoicepdf.exe Startdate: 25/05/2022 Architecture: WINDOWS Score: 100 34 www.jjewelryun.com 2->34 44 Found malware configuration 2->44 46 Malicious sample detected (through community Yara rule) 2->46 48 Multi AV Scanner detection for submitted file 2->48 50 4 other signatures 2->50 12 OSA1I5345_invoicepdf.exe 19 2->12         started        signatures3 process4 file5 32 C:\Users\user\AppData\Local\Temp\zceptz.exe, PE32 12->32 dropped 15 zceptz.exe 12->15         started        process6 signatures7 58 Multi AV Scanner detection for dropped file 15->58 60 Tries to detect virtualization through RDTSC time measurements 15->60 18 zceptz.exe 15->18         started        process8 signatures9 36 Modifies the context of a thread in another process (thread injection) 18->36 38 Maps a DLL or memory area into another process 18->38 40 Sample uses process hollowing technique 18->40 42 Queues an APC in another process (thread injection) 18->42 21 explorer.exe 18->21 injected process10 process11 23 wlanext.exe 21->23         started        signatures12 52 Modifies the context of a thread in another process (thread injection) 23->52 54 Maps a DLL or memory area into another process 23->54 56 Tries to detect virtualization through RDTSC time measurements 23->56 26 cmd.exe 1 23->26         started        28 explorer.exe 1 150 23->28         started        process13 process14 30 conhost.exe 26->30         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/a36ca6406a273cb0d73b0c76e66c559cd140c1941024b37f6e89a10ba4a0e3d8/
Threat name:
Win32.Trojan.NSISInject
Create hunting rule
Status:
Malicious
First seen:
2022-05-25 01:11:25 UTC
File Type:
PE (Exe)
Extracted files:
4
AV detection:
20 of 26 (76.92%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=unwkmqdke46lbvz3br3om3cvttiubqmucaslg73orgqqxjfa4pma._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:m1e8 rat spyware stealer suricata trojan
Link:
https://tria.ge/reports/220525-g1fy3sceak/
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
Enumerates physical storage devices
Suspicious use of SetThreadContext
Loads dropped DLL
Executes dropped EXE
Formbook Payload
Formbook
suricata: ET MALWARE FormBook CnC Checkin (GET)
Unpacked files
SH256 hash:
dd4c19d0f75032ad2cc1c24e3aa5c3f0ce902228a25ae1c61185873c2c5e7948
MD5 hash:
1adddc3276cf52b778c622514c66025d
SHA1 hash:
26d21f00506c7c85d4c2ee5106dbf89b3d35083b
Link:
https://www.unpac.me/results/3589c617-0593-4060-9707-12a9a76de719/
SH256 hash:
a36ca6406a273cb0d73b0c76e66c559cd140c1941024b37f6e89a10ba4a0e3d8
MD5 hash:
7cc26a7a0831c29c9d08a32cfd4dfdbc
SHA1 hash:
c75cbadc023bfae3c48419d0994abc00bd381e0a
Link:
https://www.unpac.me/results/3589c617-0593-4060-9707-12a9a76de719/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Legit
Score:
0.18
Link:
https://yomi.yoroi.company/submissions/a36ca6406a273cb0d73b0c76e66c559cd140c1941024b37f6e89a10ba4a0e3d8

File information

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

Malspam

Formbook

Executable exe a36ca6406a273cb0d73b0c76e66c559cd140c1941024b37f6e89a10ba4a0e3d8

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/274355/

Comments