MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 5a9b7958f4dda4839cdc81b4482ac03f2dbb9cc42a7e99eec339fb5a58a0c95b. 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 2 File information Comments
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SHA256 hash: 5a9b7958f4dda4839cdc81b4482ac03f2dbb9cc42a7e99eec339fb5a58a0c95b
SHA3-384 hash: e9272ab3aaed6541fd664a590741987b0a3a6bf1d08b4d048e2e6bbaa65a23f594d9390b64aa0fbe49352e76013be761
SHA1 hash: ae73aba255658ecbfdb729694b3e42fc3ea51b2e
MD5 hash: 1d0b9cd98e45688cec420a6b29593ae0
humanhash: video-uranus-victor-delaware
File name:pre alert documents.exe
Download: download sample
Signature Formbook
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File size:687'104 bytes
First seen:2022-06-09 13:34:18 UTC
Last seen:2022-06-13 10:04:58 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'744 x AgentTesla, 19'609 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 12288:sx9C8+jXbW9qz9q0xhqEDOogyMvGwBh1omIZh+bM9Nm5NX+PTy6BOzlfAi7:wlCXKenxhND/PMvZh1omGwz5Z4EN
TLSH T137E41230B4BD06E3E66712B40D9E158242B4593708BBEB9FD9253BCF43EF7D6152A881
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 xloader

Intelligence

File Origin
# of uploads :
5
# of downloads :
312
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
formbook
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ID:
1
File name:
pre alert documents.exe
Verdict:
Malicious activity
Analysis date:
2022-06-09 13:42:55 UTC
Tags:
formbook
Link:
https://app.any.run/tasks/2cec37f4-c633-47d2-a1fa-76d6840c119a

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/278381/
Detection(s):
SecuriteInfo.com.Trojan.MSIL.FormBook.EUF.MTB.2373.5008.UNOFFICIAL
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Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a custom TCP request
Сreating synchronization primitives
Launching a process
Creating a process with a hidden window
Launching cmd.exe command interpreter
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/62a1f7236aa17a21fc2f13f6/reports/7ecf072f-9c34-41df-b013-d34f3baf6d6e/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
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Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/1ed45f38-5646-4ef0-a367-714337fe0406
Result
Threat name:
FormBook
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Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1010039
Signature
.NET source code contains potential unpacker
Adds a directory exclusion to Windows Defender
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
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
Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines)
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Self deletion via cmd or bat file
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
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 642534 Sample: pre alert documents.exe Startdate: 09/06/2022 Architecture: WINDOWS Score: 100 46 www.timinis23.com 2->46 48 Malicious sample detected (through community Yara rule) 2->48 50 Antivirus detection for dropped file 2->50 52 Antivirus / Scanner detection for submitted sample 2->52 54 13 other signatures 2->54 10 pre alert documents.exe 7 2->10         started        signatures3 process4 file5 38 C:\Users\user\AppData\...\KrKOVKSBYZjgG.exe, PE32 10->38 dropped 40 C:\...\KrKOVKSBYZjgG.exe:Zone.Identifier, ASCII 10->40 dropped 42 C:\Users\user\AppData\Local\...\tmp8F1F.tmp, XML 10->42 dropped 44 C:\Users\user\...\pre alert documents.exe.log, ASCII 10->44 dropped 64 Adds a directory exclusion to Windows Defender 10->64 14 pre alert documents.exe 10->14         started        17 powershell.exe 24 10->17         started        19 powershell.exe 25 10->19         started        21 2 other processes 10->21 signatures6 process7 signatures8 66 Modifies the context of a thread in another process (thread injection) 14->66 68 Maps a DLL or memory area into another process 14->68 70 Sample uses process hollowing technique 14->70 72 Queues an APC in another process (thread injection) 14->72 23 cmmon32.exe 14->23         started        26 explorer.exe 14->26 injected 28 conhost.exe 17->28         started        30 conhost.exe 19->30         started        32 conhost.exe 21->32         started        process9 signatures10 56 Self deletion via cmd or bat file 23->56 58 Modifies the context of a thread in another process (thread injection) 23->58 60 Maps a DLL or memory area into another process 23->60 62 Tries to detect virtualization through RDTSC time measurements 23->62 34 cmd.exe 23->34         started        process11 process12 36 conhost.exe 34->36         started       
Detection:
xloader
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Link:
https://mwdb.cert.pl/sample/5a9b7958f4dda4839cdc81b4482ac03f2dbb9cc42a7e99eec339fb5a58a0c95b/
Threat name:
ByteCode-MSIL.Trojan.FormBook
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Status:
Malicious
First seen:
2022-06-09 10:47:18 UTC
AV detection:
10 of 32 (31.25%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=lknxswhu3wsihhg4qg2eqkwah4w3xhgefj7jt3wdhh5vuwfazfnq._file
Verdict:
malicious
Label(s):
formbook
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Result
Malware family:
xloader
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Score:
  10/10
Tags:
family:formbook family:xloader campaign:sdzp evasion loader persistence rat spyware stealer suricata trojan
Link:
https://tria.ge/reports/220609-qvnamschh4/
Behaviour
Creates scheduled task(s)
Modifies Internet Explorer settings
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
Drops file in Program Files directory
Suspicious use of SetThreadContext
Adds Run key to start application
Maps connected drives based on registry
Checks BIOS information in registry
Checks computer location settings
Deletes itself
Reads user/profile data of web browsers
Looks for VMWare Tools registry key
Looks for VirtualBox Guest Additions in registry
Xloader Payload
Formbook
Xloader
suricata: ET MALWARE FormBook CnC Checkin (GET)
suricata: ET MALWARE FormBook CnC Checkin (POST) M2
Unpacked files
SH256 hash:
e4710a90da6adf400b9ea4ad5cbc83c6b1e3cdecca54e07d23dc3ae654f08f6c
MD5 hash:
bac7c0c4ef98d948e08b7744c02f4b91
SHA1 hash:
1a674cf5f946fc603bf20d311658bbdff7db206d
Detections:
win_formbook_g0
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win_formbook_auto
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Link:
https://www.unpac.me/results/d730d701-a67f-4e00-9533-ff11bf2860e7/
Parent samples :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 hash:
ca26f7fa6bd3fd9ddd733e403eb53b611f5dab2465e5b060f53be8616f84014d
MD5 hash:
4b48d028357f600ea3f46273dcb88a0a
SHA1 hash:
6abf8ed590e9a2bbc2430fe4e46587817df25b1e
Link:
https://www.unpac.me/results/d730d701-a67f-4e00-9533-ff11bf2860e7/
SH256 hash:
02165183d808a9114251d36094998e2c48f94eac7e189f1e6b57e6977df2acab
MD5 hash:
08072f771221ae6f85f369c0c7adb4c6
SHA1 hash:
65513e25ae4a8477235766901aab1d6f3fb980a6
Link:
https://www.unpac.me/results/d730d701-a67f-4e00-9533-ff11bf2860e7/
SH256 hash:
fe78017f2153de0c5ca645c4255899ab044502fe5c77d5c04ced635d9fe981d9
MD5 hash:
ab47b292d4d39311539a0b97e6661f4f
SHA1 hash:
54cd9efbebe4f41b23e6f24fffac0da8f72d921b
Link:
https://www.unpac.me/results/d730d701-a67f-4e00-9533-ff11bf2860e7/
SH256 hash:
5a9b7958f4dda4839cdc81b4482ac03f2dbb9cc42a7e99eec339fb5a58a0c95b
MD5 hash:
1d0b9cd98e45688cec420a6b29593ae0
SHA1 hash:
ae73aba255658ecbfdb729694b3e42fc3ea51b2e
Link:
https://www.unpac.me/results/d730d701-a67f-4e00-9533-ff11bf2860e7/
Malware family:
XLoader
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Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/5a9b7958f4dd/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/5a9b7958f4dda4839cdc81b4482ac03f2dbb9cc42a7e99eec339fb5a58a0c95b

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
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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 5a9b7958f4dda4839cdc81b4482ac03f2dbb9cc42a7e99eec339fb5a58a0c95b

(this sample)

  
Dropped by
xloader
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/278381/

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