MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 46b721c436cd339be63937ca6b9912831af85f8fca25d0e752e900683f073a05. 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: 18


Intelligence 18 IOCs YARA 14 File information Comments
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SHA256 hash: 46b721c436cd339be63937ca6b9912831af85f8fca25d0e752e900683f073a05
SHA3-384 hash: 8f6857a9c0d83d55e176906979f17090db263ff82ec354336547f1a1b1d9e32bfb161f2e3e5aa91dea622c96c8b22a4b
SHA1 hash: de43c7e836752af8e8bf4a58f89b3c965e650ed3
MD5 hash: 4cb44bd5d786a7f2b53fd6d9602a2b8c
humanhash: five-failed-vegan-steak
File name:strakonaj2.1.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:421'106 bytes
First seen:2023-11-01 13:05:41 UTC
Last seen:2023-11-01 19:18:00 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash b76363e9cb88bf9390860da8e50999d2 (464 x Formbook, 184 x AgentTesla, 122 x SnakeKeylogger)
ssdeep 12288:urCFFvOtnYsaGQY4HFCaCCQ49nya09R/3W:UCmtnq9CaCSyI
Threatray 2'123 similar samples on MalwareBazaar
TLSH T1B69412073AA29567F3E29971483AC73AE77B0E280322A1470BF43E7736255D7F90D652
TrID 47.3% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13)
15.9% (.EXE) Win64 Executable (generic) (10523/12/4)
9.9% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
7.6% (.EXE) Win16 NE executable (generic) (5038/12/1)
6.8% (.EXE) Win32 Executable (generic) (4505/5/1)
File icon (PE):PE icon
dhash icon 78f9b898b8c2c940 (16 x Formbook, 15 x AgentTesla, 2 x AveMariaRAT)
Reporter malwarelabnet
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
330
Origin country :
CA CA
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
TN81804BM.doc
Verdict:
Malicious activity
Analysis date:
2023-11-01 13:23:39 UTC
Tags:
exploit cve-2017-11882 loader formbook xloader
Link:
https://app.any.run/tasks/8450723b-81c8-4c76-b38f-2572a8604188

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/457623/
Detection(s):
SecuriteInfo.com.FileRepMalware.29842.11495.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Creating a file in the %temp% directory
Creating a process from a recently created file
Launching a process
Сreating synchronization primitives
Launching cmd.exe command interpreter
Sending a custom TCP request
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
Gathering data
Verdict:
Likely Malicious
Threat level:
  5/10
Confidence:
100%
Tags:
control installer lolbin masquerade overlay packed shell32
Link:
https://www.filescan.io/uploads/65424d3abc703e36b096d244/reports/9fe99a73-e5da-4692-b805-08ffba3bdb3f/overview
Verdict:
Malicious
Labled as:
Jaik.Generic
Link:
https://www.hybrid-analysis.com/sample/46b721c436cd339be63937ca6b9912831af85f8fca25d0e752e900683f073a05
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
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Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/958c0995-4626-4eba-8b8a-314c693733dc
Result
Threat name:
FormBook, NSISDropper
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1335443
Signature
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Found malware configuration
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 dropped file
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 netstat to query active network connections and open ports
Yara detected FormBook
Yara detected NSISDropper
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1335443 Sample: strakonaj2.1.exe Startdate: 01/11/2023 Architecture: WINDOWS Score: 100 36 www.oneresi.com 2->36 38 www.mochibees-wylie.com 2->38 40 13 other IPs or domains 2->40 56 Snort IDS alert for network traffic 2->56 58 Multi AV Scanner detection for domain / URL 2->58 60 Found malware configuration 2->60 62 7 other signatures 2->62 12 strakonaj2.1.exe 17 2->12         started        signatures3 process4 file5 34 C:\Users\user\AppData\Local\...\somtjfg.exe, PE32 12->34 dropped 15 somtjfg.exe 1 12->15         started        process6 signatures7 74 Multi AV Scanner detection for dropped file 15->74 76 Maps a DLL or memory area into another process 15->76 78 Tries to detect virtualization through RDTSC time measurements 15->78 18 somtjfg.exe 15->18         started        21 conhost.exe 15->21         started        process8 signatures9 48 Modifies the context of a thread in another process (thread injection) 18->48 50 Maps a DLL or memory area into another process 18->50 52 Sample uses process hollowing technique 18->52 54 Queues an APC in another process (thread injection) 18->54 23 explorer.exe 13 7 18->23 injected process10 dnsIp11 42 www.azeemtourism.com.cdn.hstgr.net 191.96.144.70, 49744, 80 RAINBOWIDC-AS-APrainbownetworklimitedJP Chile 23->42 44 www.bulgarianarchive.com 217.26.60.244, 49740, 80 HOSTPOINT-ASCH Switzerland 23->44 46 4 other IPs or domains 23->46 64 System process connects to network (likely due to code injection or exploit) 23->64 66 Uses netstat to query active network connections and open ports 23->66 27 NETSTAT.EXE 23->27         started        signatures12 process13 signatures14 68 Modifies the context of a thread in another process (thread injection) 27->68 70 Maps a DLL or memory area into another process 27->70 72 Tries to detect virtualization through RDTSC time measurements 27->72 30 cmd.exe 1 27->30         started        process15 process16 32 conhost.exe 30->32         started       
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/46b721c436cd339be63937ca6b9912831af85f8fca25d0e752e900683f073a05
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/46b721c436cd339be63937ca6b9912831af85f8fca25d0e752e900683f073a05/
Threat name:
Win32.Trojan.FormBook
Create hunting rule
Status:
Malicious
First seen:
2023-11-01 13:06:05 UTC
File Type:
PE (Exe)
Extracted files:
2
AV detection:
21 of 24 (87.50%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=i23sdrbwzuzzxzrzg7fgxgisqmnpqx4pzis5bz2s5eagqpyhhicq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
354bb2d5a03e3c1d041730e3478e80ab5a264fd852e146e880834a346fc63579
Formbook
3dffc312e024e6daba1c3ff795a3070682341d9f99bd6e9f103d28234c695589
Formbook
6168bfdf30f058beb000e91b1ccdb8e264318f8e311f186245b16b8217787c9d
Formbook
982a9a52e532bbfe52941c4ab95c2899c1af75e9a3eee2b1977e3f49e8a3e71e
Formbook
9b9b02ea3c7c20a3b347712178063d70b93f8027bb5c57bd160692fbffe582ff
Formbook
f3c99b21d43e967be5b3e53e70050b9d6dce181fe5415f9825b512850ecb0b52
Formbook
+ 2'113 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:ge06 rat spyware stealer trojan
Link:
https://tria.ge/reports/231101-qb3afsge6z/
Behaviour
Enumerates system info in registry
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Executes dropped EXE
Loads dropped DLL
Formbook payload
Formbook
Unpacked files
SH256 hash:
bd27766fba30d2b0968b83369c90d36715cf98e77ce06fffced20310baa9cb4b
MD5 hash:
d85f122419c47a2d951ca93a266a336d
SHA1 hash:
87abb71c9a2e80a27f131ede433e4d4a315817c6
Detections:
FormBook
Create hunting rule
win_formbook_w0
Create hunting rule
win_formbook_auto
Create hunting rule
win_formbook_g0
Create hunting rule
Link:
https://www.unpac.me/results/fd4766de-1acf-4d22-82fe-653fef566bf0/
Parent samples :
9b9b02ea3c7c20a3b347712178063d70b93f8027bb5c57bd160692fbffe582ff
46b721c436cd339be63937ca6b9912831af85f8fca25d0e752e900683f073a05
09c9f5a39dc3e3ac12127313b688b22672dfc6db5a5acb5d3e9c5b6e257b5c17
b86cd11880add13d576f154fbadc2d97eb4fd21f05813c52dc427ddb7dd8cdde
SH256 hash:
0595d54a347fe78b413c210b3ea705f92dcd54384e552407234c7546f76a66ea
MD5 hash:
69c3bcaabc59eaf15ac89090fe7d0ef5
SHA1 hash:
21fd6d5d97ef9f7900568e5df362384a0e9c5fde
Link:
https://www.unpac.me/results/fd4766de-1acf-4d22-82fe-653fef566bf0/
SH256 hash:
46b721c436cd339be63937ca6b9912831af85f8fca25d0e752e900683f073a05
MD5 hash:
4cb44bd5d786a7f2b53fd6d9602a2b8c
SHA1 hash:
de43c7e836752af8e8bf4a58f89b3c965e650ed3
Link:
https://www.unpac.me/results/fd4766de-1acf-4d22-82fe-653fef566bf0/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/46b721c436cd/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/46b721c436cd339be63937ca6b9912831af85f8fca25d0e752e900683f073a05

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:cobalt_strike_tmp01925d3f
Create hunting rule
Author:The DFIR Report
Description:files - file ~tmp01925d3f.exe
Reference:https://thedfirreport.com
Rule name:DebuggerCheck__API
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerCheck__GlobalFlags
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerCheck__QueryInfo
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerHiding__Active
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerHiding__Thread
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:maldoc_find_kernel32_base_method_1
Create hunting rule
Author:Didier Stevens (https://DidierStevens.com)
Rule name:maldoc_getEIP_method_1
Create hunting rule
Author:Didier Stevens (https://DidierStevens.com)
Rule name:MD5_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for MD5 constants
Rule name:meth_get_eip
Create hunting rule
Author:Willi Ballenthin
Rule name:pe_no_import_table
Create hunting rule
Description:Detect pe file that no import table
Rule name:RIPEMD160_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for RIPEMD-160 constants
Rule name:SEH__vectored
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:SHA1_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA1 constants

File information

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

Web download

Formbook

Executable exe 46b721c436cd339be63937ca6b9912831af85f8fca25d0e752e900683f073a05

(this sample)

Cape
Cape
https://www.capesandbox.com/analysis/457623/
  
URLhaus
https://urlhaus.abuse.ch/url/2726990/
  
Delivery method
Distributed via web download

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