MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 35edcaa0f180ef140f70ee241a648c6335cf3055dcf2d6074d5ef7966b55925d. 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: 35edcaa0f180ef140f70ee241a648c6335cf3055dcf2d6074d5ef7966b55925d
SHA3-384 hash: 2b7e372c1aab4642d506f3580c052030b98fe0be6466b59a9850dc6273772a3de72eacdaca52181e62653820cb267f87
SHA1 hash: a0bfc1be460ebc4c8c424ff0a570e93f0795b287
MD5 hash: 6bfc8357041faa36770eed0275ed1525
humanhash: east-ceiling-hydrogen-march
File name:Sjyssaskr6577543.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:603'136 bytes
First seen:2022-06-27 18:06:57 UTC
Last seen:2022-06-29 13:42:31 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'666 x AgentTesla, 19'479 x Formbook, 12'209 x SnakeKeylogger)
ssdeep 12288:3xZOqCf1wPPBljwaqPHxW5QsTD+u5fQa4fxRoDhdT1lIm:3eq+uPPbMaGETDGd5RWI
TLSH T17BD42369F5255DB3E681C6F2A4608B8477047834C2C576E0D00F927B8AA1AE7DBF2F71
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)
File icon (PE):PE icon
dhash icon b2a89c96a2cada72 (2'283 x Formbook, 981 x Loki, 803 x AgentTesla)
Reporter GovCERT_CH
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
265
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
Sjyssaskr6577543.exe
Verdict:
Malicious activity
Analysis date:
2022-06-27 20:59:11 UTC
Tags:
formbook trojan stealer
Link:
https://app.any.run/tasks/f487f5bd-8f8b-4607-a208-493df96e6218

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/283680/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Launching a process
Creating a file
Searching for synchronization primitives
Сreating synchronization primitives
Launching cmd.exe command interpreter
Reading critical registry keys
Setting browser functions hooks
Unauthorized injection to a system process
Unauthorized injection to a browser process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
fareit obfuscated packed
Link:
https://www.filescan.io/uploads/62b9f1cb22ef321587b63269/reports/3840901c-8a57-4cee-b854-41baf7f55026/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/fbad1ca5-3517-410a-ade3-bd01f5d2c11f
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1020697
Signature
.NET source code contains potential unpacker
.NET source code contains very large array initializations
Antivirus / Scanner detection for submitted sample
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
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)
Modifies the prolog of user mode functions (user mode inline hooks)
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
System process connects to network (likely due to code injection or exploit)
Tries to detect virtualization through RDTSC time measurements
Yara detected Costura Assembly Loader
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 653193 Sample: Sjyssaskr6577543.exe Startdate: 27/06/2022 Architecture: WINDOWS Score: 100 35 Multi AV Scanner detection for domain / URL 2->35 37 Malicious sample detected (through community Yara rule) 2->37 39 Antivirus detection for URL or domain 2->39 41 9 other signatures 2->41 10 Sjyssaskr6577543.exe 3 2->10         started        process3 file4 29 C:\Users\user\...\Sjyssaskr6577543.exe.log, ASCII 10->29 dropped 13 InstallUtil.exe 10->13         started        16 InstallUtil.exe 10->16         started        process5 signatures6 51 Modifies the context of a thread in another process (thread injection) 13->51 53 Maps a DLL or memory area into another process 13->53 55 Sample uses process hollowing technique 13->55 57 Queues an APC in another process (thread injection) 13->57 18 explorer.exe 13->18 injected 59 Tries to detect virtualization through RDTSC time measurements 16->59 process7 dnsIp8 31 www.test-brew-inc.com 162.43.117.94, 49832, 80 CYBERTRAILSUS United States 18->31 33 www.withoutyoutube.com 18->33 43 System process connects to network (likely due to code injection or exploit) 18->43 22 help.exe 18->22         started        signatures9 process10 signatures11 45 Modifies the context of a thread in another process (thread injection) 22->45 47 Maps a DLL or memory area into another process 22->47 49 Tries to detect virtualization through RDTSC time measurements 22->49 25 cmd.exe 1 22->25         started        process12 process13 27 conhost.exe 25->27         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/35edcaa0f180ef140f70ee241a648c6335cf3055dcf2d6074d5ef7966b55925d/
Threat name:
ByteCode-MSIL.Trojan.Pwsx
Create hunting rule
Status:
Malicious
First seen:
2022-06-27 12:17:25 UTC
File Type:
PE (.Net Exe)
Extracted files:
4
AV detection:
18 of 26 (69.23%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=gxw4vihrqdxrid3q5ysbuzemmm246mcv3tznmb2nl33zm22vsjoq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:sn31 rat spyware stealer suricata trojan
Link:
https://tria.ge/reports/220627-wqarmseec8/
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
Formbook Payload
Formbook
suricata: ET MALWARE FormBook CnC Checkin (GET)
Unpacked files
SH256 hash:
b02dc5b7e58275ad45eb4df02325f5fca9204fa17b52d33bdbc50ffdc6d46e3c
MD5 hash:
6172516b2cf7a0ce0ee0e31f64161e13
SHA1 hash:
877e795a74b2bc6ceffcd6b141e0acc97beb21d7
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
FormBook
Create hunting rule
Link:
https://www.unpac.me/results/7d5b0657-96c9-4714-b0ee-04259a33e576/
Parent samples :
dc44140377b017e013ca665c49ebacd386d4a4ca19329e77d9dfbb86010e66a5
2537720d5a68fae9bd2bd01925102deb25af75b86fbdc295f166efc97e636cfe
77c54b077789c0f6523b29fec23823227ffeca21d82c627e63f92d95b59e1905
35edcaa0f180ef140f70ee241a648c6335cf3055dcf2d6074d5ef7966b55925d
47796a46d5c191e29988d2d657332b3d7f9f5278b3951049e98f80a2b0c11d5e
SH256 hash:
9f01d9f2ed07e630ec078efa5d760762c3c8ad3b06e9e8a9062a37d63d57b026
MD5 hash:
9fbb8cec55b2115c00c0ba386c37ce62
SHA1 hash:
e2378a1c22c35e40fd1c3e19066de4e33b50f24a
Link:
https://www.unpac.me/results/7d5b0657-96c9-4714-b0ee-04259a33e576/
SH256 hash:
1125118128a6b66ec7cb03131085eed0f1261e1299815c23115d030c2dac1dfc
MD5 hash:
478f35ccc3460e0811a8ec8f33123d36
SHA1 hash:
8687697481ab0d7ce43eb2c31ebd9c69a51ddde2
Link:
https://www.unpac.me/results/7d5b0657-96c9-4714-b0ee-04259a33e576/
SH256 hash:
35edcaa0f180ef140f70ee241a648c6335cf3055dcf2d6074d5ef7966b55925d
MD5 hash:
6bfc8357041faa36770eed0275ed1525
SHA1 hash:
a0bfc1be460ebc4c8c424ff0a570e93f0795b287
Link:
https://www.unpac.me/results/7d5b0657-96c9-4714-b0ee-04259a33e576/
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/35edcaa0f180ef140f70ee241a648c6335cf3055dcf2d6074d5ef7966b55925d

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_EXE_Packed_SmartAssembly
Create hunting rule
Author:ditekSHen
Description:Detects executables packed with SmartAssembly
Rule name:meth_get_eip
Create hunting rule
Author:Willi Ballenthin
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 35edcaa0f180ef140f70ee241a648c6335cf3055dcf2d6074d5ef7966b55925d

(this sample)

  
Dropped by
formbook
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/283680/

Comments