MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f136efd23d0c964f4f89f9a00263c011f6a7883978b92016d52196cf8647cca3. 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: 16


Intelligence 16 IOCs YARA 6 File information Comments
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SHA256 hash: f136efd23d0c964f4f89f9a00263c011f6a7883978b92016d52196cf8647cca3
SHA3-384 hash: dccbf5f2e63a19f23af2e923fd4f6fbb93b40f0208a6813a93af3d4147ee9414cb1819abbacbbb4cee2d1bf9a6e6d86e
SHA1 hash: f9d4e46d2c11d9e3c13cc8de1d5beaae0c3a30c9
MD5 hash: 29b59f88a0d7f0d9192137f430497cf5
humanhash: batman-dakota-blossom-alaska
File name:Versanddetails.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:2'246'144 bytes
First seen:2022-08-08 06:19:50 UTC
Last seen:2022-08-08 06:33:12 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'663 x AgentTesla, 19'478 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 24576:YYS4bzyEaqvGEzHeN+GrAmyvPgzALBKE6abNK9JUuARVjGoQ0t8d9vRnHDmuLAPD:jvh7NHtKELBk6FGoQ0SfvRAd8TM
TLSH T116A56A5E23BEA70EB8C2202FC5FD03561A74AD56D021C1E5B2821AFEB07FBDC5475668
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 eaae8a9ea69ae8b0 (33 x Formbook, 4 x SnakeKeylogger, 1 x AgentTesla)
Reporter FORMALITYDE
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
289
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
Versanddetails.exe
Verdict:
Malicious activity
Analysis date:
2022-08-08 06:22:54 UTC
Tags:
formbook trojan stealer
Link:
https://app.any.run/tasks/752af4d2-7e77-4003-af4f-4f048324136b

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/297055/
Detection(s):
SecuriteInfo.com.Variant.Tedy.182598.23823.12727.UNOFFICIAL
Create hunting rule

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
Sending a custom TCP request
Setting browser functions hooks
Forced shutdown of a system process
Unauthorized injection to a system process
Unauthorized injection to a browser process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/62f0ab8e9ca9b9bfcbf381c7/reports/f9a2ed12-20b8-4ad6-9114-d8abae21ca31/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/d1e3965a-6e94-4822-a0ac-43077baea2dd
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1047711
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
Icon mismatch, binary includes an icon from a different legit application in order to fool users
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)
Modifies the prolog of user mode functions (user mode inline hooks)
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Snort IDS alert for network traffic
System process connects to network (likely due to code injection or exploit)
Tries to detect virtualization through RDTSC time measurements
Uses netsh to modify the Windows network and firewall settings
Writes to foreign memory regions
Yara detected FormBook
Yara detected Generic Downloader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 680205 Sample: Versanddetails.exe Startdate: 08/08/2022 Architecture: WINDOWS Score: 100 36 Snort IDS alert for network traffic 2->36 38 Malicious sample detected (through community Yara rule) 2->38 40 Antivirus detection for URL or domain 2->40 42 10 other signatures 2->42 10 Versanddetails.exe 3 2->10         started        process3 file4 28 C:\Users\user\...\Versanddetails.exe.log, ASCII 10->28 dropped 54 Writes to foreign memory regions 10->54 56 Injects a PE file into a foreign processes 10->56 14 InstallUtil.exe 10->14         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 2 other signatures 14->64 17 explorer.exe 14->17 injected process8 dnsIp9 30 www.tipiministries.com 103.224.182.242, 49816, 80 TRELLIAN-AS-APTrellianPtyLimitedAU Australia 17->30 32 dns.webcake.io 113.20.119.61, 49819, 80 CMCTELECOM-AS-VNCMCTelecomInfrastructureCompanyVN Viet Nam 17->32 34 6 other IPs or domains 17->34 44 System process connects to network (likely due to code injection or exploit) 17->44 46 Uses netsh to modify the Windows network and firewall settings 17->46 21 netsh.exe 17->21         started        signatures10 process11 signatures12 48 Modifies the context of a thread in another process (thread injection) 21->48 50 Maps a DLL or memory area into another process 21->50 52 Tries to detect virtualization through RDTSC time measurements 21->52 24 cmd.exe 1 21->24         started        process13 process14 26 conhost.exe 24->26         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/f136efd23d0c964f4f89f9a00263c011f6a7883978b92016d52196cf8647cca3/
Threat name:
Win32.Trojan.Leonem
Create hunting rule
Status:
Malicious
First seen:
2022-08-08 02:15:09 UTC
File Type:
PE (.Net Exe)
Extracted files:
4
AV detection:
20 of 23 (86.96%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=6e3o7ur5bsle6t4j7gqaey6ach3kpcbzpc4safwveglm7bshzsrq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:nt19 rat spyware stealer trojan
Link:
https://tria.ge/reports/220808-g3r45agga8/
Behaviour
Enumerates system info in registry
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
Unpacked files
SH256 hash:
617d0952cb7be3d16091329e28646df5931d88d2f218f2fec1bcfbcf48e428cf
MD5 hash:
150b3b0a7788ca0fdde9cf220758bad1
SHA1 hash:
b893c8b0226b4042a67a0a70f84dcf59d0e15f99
Detections:
win_formbook_g0
Create hunting rule
Link:
https://www.unpac.me/results/0e2c2f44-7976-4254-b9a5-11467029b989/
SH256 hash:
2bdc7f173007bb012d4aeb8841698d64436b770b81d7dfc016ec97847fcc7067
MD5 hash:
0c27130296ba7f1a6c57c9006845847a
SHA1 hash:
91cc0ef6c1b151060cb150a91a1ed794c20eea87
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
FormBook
Create hunting rule
Link:
https://www.unpac.me/results/0e2c2f44-7976-4254-b9a5-11467029b989/
Parent samples :
bf77d2a22aab1da7767128bcfdc9e1b31d46619a044b932b9dfa37cdc43eb65c
f136efd23d0c964f4f89f9a00263c011f6a7883978b92016d52196cf8647cca3
SH256 hash:
3b7cceed98ca88d7a42a64454a95e60e0843a997e9609118f458a96d98395c55
MD5 hash:
11a8cee51210649dc0df253bcd2ecaf4
SHA1 hash:
855a92879acccb1ba709f6c8aa64cfb03dda5e3f
Link:
https://www.unpac.me/results/0e2c2f44-7976-4254-b9a5-11467029b989/
SH256 hash:
f136efd23d0c964f4f89f9a00263c011f6a7883978b92016d52196cf8647cca3
MD5 hash:
29b59f88a0d7f0d9192137f430497cf5
SHA1 hash:
f9d4e46d2c11d9e3c13cc8de1d5beaae0c3a30c9
Link:
https://www.unpac.me/results/0e2c2f44-7976-4254-b9a5-11467029b989/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/f136efd23d0c/report/overview.html
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/f136efd23d0c964f4f89f9a00263c011f6a7883978b92016d52196cf8647cca3

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:malware_Formbook_strings
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect Formbook in memory
Reference:internal research
Rule name:meth_get_eip
Create hunting rule
Author:Willi Ballenthin
Rule name:meth_stackstrings
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
Rule name:win_formbook_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:Detects win.formbook.

File information

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

Malspam

Formbook

Executable exe f136efd23d0c964f4f89f9a00263c011f6a7883978b92016d52196cf8647cca3

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/297055/

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