MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 21696a3d60cb627bb86b4e08f32f1ae08e348ff3b4e99ad15c85febb1caca754. 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: 21696a3d60cb627bb86b4e08f32f1ae08e348ff3b4e99ad15c85febb1caca754
SHA3-384 hash: e9ece473188875476fa9cfbdb22b3f482fb632babd3d6512a0c89b3feb08116c6a9a4804bba55b01b6c159d896676c48
SHA1 hash: 255d373d81b543430f29eb3cc859486cb6625c6f
MD5 hash: 8f95a8029b4f30e0a0bb1d53867927c1
humanhash: pasta-princess-spaghetti-three
File name:Invoice 230892 PDF.com
Download: download sample
Signature Formbook
Create hunting rule
File size:537'088 bytes
First seen:2023-09-18 14:25:44 UTC
Last seen:2023-09-18 14:43:42 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'740 x AgentTesla, 19'599 x Formbook, 12'241 x SnakeKeylogger)
ssdeep 12288:C5BBpTYpDy56ygEzlKyaqNMd1eaIs3vWAmVX2R:CbMp06BSx2GY9m
Threatray 2'133 similar samples on MalwareBazaar
TLSH T1ADB4AF2631FF5196C766EBB10BE4ACBF87A6F573520BF63939C11A4A8322D40DA01375
TrID 63.0% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
11.2% (.SCR) Windows screen saver (13097/50/3)
9.0% (.EXE) Win64 Executable (generic) (10523/12/4)
5.6% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
3.8% (.EXE) Win32 Executable (generic) (4505/5/1)
Reporter cocaman
Tags:com exe FormBook payment

Intelligence

File Origin
# of uploads :
2
# of downloads :
290
Origin country :
CH CH
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
Invoice 230892 PDF.com
Verdict:
Malicious activity
Analysis date:
2023-09-18 14:27:47 UTC
Tags:
formbook xloader stealer spyware
Link:
https://app.any.run/tasks/75afb8bf-20fe-4817-b295-e3891f38d513

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/449378/
Detection(s):
SecuriteInfo.com.Win32.PWSX-gen.28767.16934.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a custom TCP request
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Launching a process
Сreating synchronization primitives
Launching cmd.exe command interpreter
Setting browser functions hooks
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
masquerade packed
Link:
https://www.filescan.io/uploads/65085dfc83a0c6425df86d5e/reports/41555de2-6170-4e1e-91f8-ccfedcb1fd9e/overview
Verdict:
Malicious
Labled as:
Malware
Link:
https://www.hybrid-analysis.com/sample/21696a3d60cb627bb86b4e08f32f1ae08e348ff3b4e99ad15c85febb1caca754
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/3e5a3245-192e-44db-87c1-90fee2f6440f
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1310107
Signature
.NET source code contains potential unpacker
.NET source code contains very large strings
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Found malware configuration
Initial sample is a PE file and has a suspicious name
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 domain / URL
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 sandboxes and other dynamic analysis tools (process name or module or function)
Tries to detect virtualization through RDTSC time measurements
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1310107 Sample: Invoice_230892_PDF.com.exe Startdate: 18/09/2023 Architecture: WINDOWS Score: 100 35 Snort IDS alert for network traffic 2->35 37 Multi AV Scanner detection for domain / URL 2->37 39 Found malware configuration 2->39 41 11 other signatures 2->41 10 Invoice_230892_PDF.com.exe 3 2->10         started        process3 signatures4 49 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 10->49 51 Tries to detect virtualization through RDTSC time measurements 10->51 53 Injects a PE file into a foreign processes 10->53 13 Invoice_230892_PDF.com.exe 10->13         started        process5 signatures6 55 Modifies the context of a thread in another process (thread injection) 13->55 57 Maps a DLL or memory area into another process 13->57 59 Sample uses process hollowing technique 13->59 61 Queues an APC in another process (thread injection) 13->61 16 explorer.exe 4 1 13->16 injected process7 dnsIp8 27 hawskio26.click 172.96.186.176, 49721, 80 SINGLEHOP-LLCUS Canada 16->27 29 www.ppirr.biz 91.195.240.123, 49739, 80 SEDO-ASDE Germany 16->29 31 13 other IPs or domains 16->31 33 System process connects to network (likely due to code injection or exploit) 16->33 20 wlanext.exe 16->20         started        signatures9 process10 signatures11 43 Modifies the context of a thread in another process (thread injection) 20->43 45 Maps a DLL or memory area into another process 20->45 47 Tries to detect virtualization through RDTSC time measurements 20->47 23 cmd.exe 1 20->23         started        process12 process13 25 conhost.exe 23->25         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/21696a3d60cb627bb86b4e08f32f1ae08e348ff3b4e99ad15c85febb1caca754/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2023-09-18 00:30:01 UTC
File Type:
PE (.Net Exe)
Extracted files:
9
AV detection:
18 of 23 (78.26%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=efuwuplaznrhxodljyepgly24chdjd7twtuzvuk4qx7lwhfmu5ka._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
03ffe862ddce5d29a530979327b5c41e8d952c0785cc02578061fe234543519f
Formbook
091fe3a36df94f559c878564de16e72c8ad5368ff0f1d89fec4b493725e96bbe
Formbook
190090b95e7c9b2410ceb2149bb1c4369550963e56693e331bda3d020a0018e2
Formbook
2334ecedc27e808bbf63a9c3813298d6605d227c6c9f01a8f1f5a636f8439436
Formbook
244da7e5507e828266a961e3f4bd165f1b8c408463157d6c1e01bef1cf162034
Formbook
369de2afba1e4a4807ac66f57dfb436ec13cd46a5c09f6a4d7faedc788d04be7
Formbook
63d353bf92bb9d4fa31656308d30a39b91b8dd4005d6254502b1e829b74ae79a
Formbook
b799dc2f99d7cf59b9379f6ac7b32fe0852d2eab2386d20799c3085d38a576a5
Formbook
f2f5aed974966a3e0339b2092b7b128e22032b8d1bb6a9395a110a710a52acc7
Formbook
+ 2'123 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:sn26 rat spyware stealer trojan
Link:
https://tria.ge/reports/230918-rrt5fshg9v/
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
Deletes itself
Formbook payload
Formbook
Unpacked files
SH256 hash:
57d06b57605109335f41e7529a275a14155c39bd74c54049dfcdfa8a5756c09a
MD5 hash:
612b19e1ed04b4a8f442939324963a63
SHA1 hash:
5f12391109b022d1017312892ff95a7b751afa37
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/44340ae9-97c2-4c28-9f20-a974d116d3b5/
Parent samples :
cc1e18df25ea2f4e3a97b78ceb434ba61318eae9ee868d62bb1b3b8e9dbf2c7c
61894dd6d947ab1237c08e4f020e6462fdc7a96903c7cf27523d4e21304c1612
44b4eef8a260669a21c64f95af4c5ad884b77fc118be9ade37dad2b908a37bee
c4079f3f904aaaeda007ba7ce93f24d8a47eb749be233eaf87766e12fcada032
1a40316f6c5b2edf199b2ea9d5b00cc4ae5547a29b6aa08caadd5ed53a007521
276026d460a163a82f31f1d1b1283b13f37170ab543357585952c311606d6a7f
3075ce1d8754fd33aba3041411c6f1465abdb5c49495b18511c656589db79ba9
7a123e291c6c3bca48da92da78abd1157469dd5885f7af234e9114bcc5c8f061
ce4adf5f77ad3bf554ee6727abfe3c82e49ac5097e4e8d50ba2faba0d05b9c1d
a318197c6b7d13969ec28187327e1005ac7d39f969ef27b81f7967870e896378
5e356ba0663601a704ff745bf4e38b9a8ee7ececcd5443da641d46c30a04de07
5f4316e6d654f612b1aa557b15eae6502979697bcd4cdc101b49c2297a6dca14
91407535cc5852ecae7889b9f034920694c733c9e47f89d08a470e32b9d31e13
091fe3a36df94f559c878564de16e72c8ad5368ff0f1d89fec4b493725e96bbe
21696a3d60cb627bb86b4e08f32f1ae08e348ff3b4e99ad15c85febb1caca754
99160f7ca07e18bc3a131520825ab4ce8d2f4c57b63bffc89d8e18d5a7fa25ce
ae5f1fa9855fd6e4511a674f0a0465df7960a757409a0d176f50b10fd14925ad
02971b038e3224fb89a5aa824cd4388ab3108e86571312d127e32b6a59b1b3ec
ce56ba6e7d6693cf8b2110b6ce1789f9a38669af8e17c30ff83e9fec9372c372
bc1c8cb700d5be15c306441325d0390344f846c226d720647d9f8d8e37f458db
3776d991080dd8cdf41d7b64315d1bccf2c09ed001058b9a28042d760f888163
SH256 hash:
5cf51d1a8d4bd940740e90e3962cea8e939e791ef7c5bd88d1a0cb574af25b70
MD5 hash:
9407c2206b85c7cb0949ef623fa614d8
SHA1 hash:
df6e3ec48a4e673d93fc6818db52460ce8fadd9a
Link:
https://www.unpac.me/results/44340ae9-97c2-4c28-9f20-a974d116d3b5/
SH256 hash:
858dbb8b431cfe76cf39383c18bf71656a6a596d46f170d9e0f499a9e8f148a6
MD5 hash:
89c041548ce83af410a41307c5893182
SHA1 hash:
291d2b2c46ef5f2ef147b7fbe808a0e2683067af
Link:
https://www.unpac.me/results/44340ae9-97c2-4c28-9f20-a974d116d3b5/
SH256 hash:
21696a3d60cb627bb86b4e08f32f1ae08e348ff3b4e99ad15c85febb1caca754
MD5 hash:
8f95a8029b4f30e0a0bb1d53867927c1
SHA1 hash:
255d373d81b543430f29eb3cc859486cb6625c6f
Link:
https://www.unpac.me/results/44340ae9-97c2-4c28-9f20-a974d116d3b5/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/21696a3d60cb/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.85
Link:
https://yomi.yoroi.company/submissions/21696a3d60cb627bb86b4e08f32f1ae08e348ff3b4e99ad15c85febb1caca754

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: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:NET
Create hunting rule
Author:malware-lu
Rule name:pe_imphash
Create hunting rule
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
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

zip 79b1c6f0974e39d1e4f513eaef5f1f3ad5fd6cd42ce8758f1c7fef791632c82d

Formbook

Executable exe 21696a3d60cb627bb86b4e08f32f1ae08e348ff3b4e99ad15c85febb1caca754

(this sample)

  
Delivery method
Other
  
Dropped by
SHA256 79b1c6f0974e39d1e4f513eaef5f1f3ad5fd6cd42ce8758f1c7fef791632c82d
Cape
Cape
https://www.capesandbox.com/analysis/449378/
  
Dropped by
MD5 45444ed8c62492e06a04df61e36be59c

Comments