MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b3973d753b858ddefa96863b00a6b52a56d1966b7a716a7ccd63205596ef1034. 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 2 File information Comments
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SHA256 hash: b3973d753b858ddefa96863b00a6b52a56d1966b7a716a7ccd63205596ef1034
SHA3-384 hash: 009fecebc950ea0b29a86b1c836ce8fc53408c78608800fb20ed56c6e079c9157da5e78c0a93e1fe9a408b65caa17c7a
SHA1 hash: 951ca5ed93f54a1ce6649084ddb8dd6c86cffce0
MD5 hash: 90ba1d9f5f51cf8dd95c8c93f3184a77
humanhash: maine-uranus-island-massachusetts
File name:TPC_2022_0218_SZCDC_02_RK,xlsx.exe
Download: download sample
Signature Formbook
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File size:989'184 bytes
First seen:2022-02-18 14:17:55 UTC
Last seen:2022-02-18 16:09:25 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'742 x AgentTesla, 19'607 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 12288:SmgZx+RHBy8wiFbf4RWESlvruMefOwX1tqqtKEfxn84zzI5cO1aAFU:o+RH4qdPc/FHKGx84XAu
TLSH T13925E02B72E10FCCDCDB9AB66F1B7A2315727C998B2393543E81A4DE44D7AC0852D64C
File icon (PE):PE icon
dhash icon eeeeeed2bea6d2a8 (3 x Formbook)
Reporter GovCERT_CH
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
299
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
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Link:
https://www.capesandbox.com/analysis/242545/
Detection(s):
SecuriteInfo.com.Trojan.PackedNET.1206.11572.21251.UNOFFICIAL
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Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Adding an access-denied ACE
Launching a process
Сreating synchronization primitives
Creating a file
Launching cmd.exe command interpreter
DNS request
Sending an HTTP GET request
Searching for synchronization primitives
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
obfuscated packed
Link:
https://www.filescan.io/uploads/620faaa1875593a3cce57f11/reports/96229a14-8537-4eb7-83e3-a65b5842e928/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
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Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/f6045de3-b29a-47a3-bfe6-590ad5cf1b29
Result
Threat name:
FormBook
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Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/942257
Signature
.NET source code contains very large array initializations
.NET source code references suspicious native API functions
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Contains functionality to hide user accounts
Found malware configuration
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)
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to detect virtualization through RDTSC time measurements
Writes to foreign memory regions
Yara detected AntiVM3
Yara detected FormBook
Yara detected UAC Bypass using CMSTP
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 574735 Sample: TPC_2022_0218_SZCDC_02_RK,x... Startdate: 18/02/2022 Architecture: WINDOWS Score: 100 31 www.involvelife.com 2->31 33 www.vowfm.com 2->33 35 2 other IPs or domains 2->35 37 Found malware configuration 2->37 39 Malicious sample detected (through community Yara rule) 2->39 41 Antivirus detection for URL or domain 2->41 43 10 other signatures 2->43 11 TPC_2022_0218_SZCDC_02_RK,xlsx.exe 3 2->11         started        signatures3 process4 file5 29 C:\...\TPC_2022_0218_SZCDC_02_RK,xlsx.exe.log, ASCII 11->29 dropped 51 Writes to foreign memory regions 11->51 53 Injects a PE file into a foreign processes 11->53 15 MRINFO.EXE 11->15         started        signatures6 process7 signatures8 55 Modifies the context of a thread in another process (thread injection) 15->55 57 Maps a DLL or memory area into another process 15->57 59 Sample uses process hollowing technique 15->59 61 2 other signatures 15->61 18 explorer.exe 15->18 injected process9 process10 20 mstsc.exe 18->20         started        signatures11 45 Modifies the context of a thread in another process (thread injection) 20->45 47 Maps a DLL or memory area into another process 20->47 49 Tries to detect virtualization through RDTSC time measurements 20->49 23 cmd.exe 1 20->23         started        25 explorer.exe 108 20->25         started        process12 process13 27 conhost.exe 23->27         started       
Detection:
formbook
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Link:
https://mwdb.cert.pl/sample/b3973d753b858ddefa96863b00a6b52a56d1966b7a716a7ccd63205596ef1034/
Threat name:
ByteCode-MSIL.Trojan.FormBook
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Status:
Malicious
First seen:
2022-02-18 14:18:10 UTC
File Type:
PE (.Net Exe)
Extracted files:
12
AV detection:
17 of 28 (60.71%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=wolt25j3qwg556uwqy5qbjvvfjlndftlpjywu7gnmmqflfxpca2a._file
Verdict:
malicious
Label(s):
formbook
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Result
Malware family:
xloader
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Score:
  10/10
Tags:
family:xloader campaign:qwod loader rat
Link:
https://tria.ge/reports/220218-rl9yqacfa4/
Behaviour
Gathers network information
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
Drops file in Windows directory
Suspicious use of SetThreadContext
Xloader Payload
Xloader
Unpacked files
SH256 hash:
8f97054e2c2cac0ca78de1e0b1f8fa71c30bfb1d851182da2105a8bb4bc94f85
MD5 hash:
9997a85a7c0a8407b75231aa459ea2f9
SHA1 hash:
d2f0474632f178d71f13b6c81e32835adfaf0356
Detections:
win_formbook_g0
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win_formbook_auto
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Link:
https://www.unpac.me/results/b9f698dd-e932-4612-a788-587178776359/
SH256 hash:
9327ba52ee9cf291a7abacd7cac45856fcbb238c618b51f9bc90b738338914e8
MD5 hash:
83d08805bd83b14115cdb2cb3f6c647a
SHA1 hash:
3652d51ee4acf8067bf69ae40931eb50a60f0340
Detections:
win_formbook_g0
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Link:
https://www.unpac.me/results/b9f698dd-e932-4612-a788-587178776359/
SH256 hash:
6b6494b87097859fab64c81a6eeea9ff312e624db95a139cd2b7ba47983fe1d9
MD5 hash:
bd0f5105b444e0b5e03587d6b537f1b3
SHA1 hash:
cc02e5c53acba8acc0aac06720b5f55eeff7eaf2
Link:
https://www.unpac.me/results/b9f698dd-e932-4612-a788-587178776359/
SH256 hash:
455417cf1fc66bfefeb31b1f4cc737d07efc1a72e25844a34edb8726af48f655
MD5 hash:
ee2f20dcf1270bbef5da8fd04f215fe9
SHA1 hash:
3f79319934c0e3fdd872d7e5d19589fee1bf7f14
Link:
https://www.unpac.me/results/b9f698dd-e932-4612-a788-587178776359/
SH256 hash:
70b785e5cb5b2e61c0f5da4a71ab0bbd14d9a0849387f037e0d75cc1ffe0a082
MD5 hash:
5951b52c9b4d11ca7f4f33e5a3fb2c31
SHA1 hash:
0bc54fd699fff7b93e5c447a141c0d904924ab0d
Link:
https://www.unpac.me/results/b9f698dd-e932-4612-a788-587178776359/
SH256 hash:
b3973d753b858ddefa96863b00a6b52a56d1966b7a716a7ccd63205596ef1034
MD5 hash:
90ba1d9f5f51cf8dd95c8c93f3184a77
SHA1 hash:
951ca5ed93f54a1ce6649084ddb8dd6c86cffce0
Link:
https://www.unpac.me/results/b9f698dd-e932-4612-a788-587178776359/
Malware family:
XLoader
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Verdict:
Malicious
Link:
https://www.vmray.com/analyses/b3973d753b85/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/b3973d753b858ddefa96863b00a6b52a56d1966b7a716a7ccd63205596ef1034

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 b3973d753b858ddefa96863b00a6b52a56d1966b7a716a7ccd63205596ef1034

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/242545/

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