MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 398d657a86bb82638352ce58d7f71da551cc07c7a0831f83a588dff8bca0ca3a. 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: 13


Intelligence 13 IOCs YARA 17 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 398d657a86bb82638352ce58d7f71da551cc07c7a0831f83a588dff8bca0ca3a
SHA3-384 hash: c27acaad3c3c68c6745bbe7451e872e2ae8cd976d2a0a25faa6431e00fcd322275ee0f17abba7dbe1317afd8b27790d4
SHA1 hash: bccbe3b156582fec726ef7878e736079f957a508
MD5 hash: 3e7f2a560c5888e30f136a7d9ce8d4dd
humanhash: lemon-three-twelve-undress
File name:Revised invoice.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:713'216 bytes
First seen:2023-11-29 13:13:58 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 12288:EHcopox4Ff+CmA4xiS/vAOG1SvRHtAbgXjtYUUnN8E0WDi+t8yzD/n/fWUPm:ve5GCWiSR7+bctYPnZvLP/JP
Threatray 393 similar samples on MalwareBazaar
TLSH T1AFE412A472089137CD1D0BF910A3C8F04772BE222577D2CEADCE6DB77A877894A85563
TrID 71.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.2% (.EXE) Win64 Executable (generic) (10523/12/4)
6.3% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.3% (.EXE) Win32 Executable (generic) (4505/5/1)
2.0% (.ICL) Windows Icons Library (generic) (2059/9)
File icon (PE):PE icon
dhash icon 20c89c88e63c4c12 (13 x AgentTesla, 11 x Formbook, 7 x SnakeKeylogger)
Reporter cocaman
Tags:exe FormBook INVOICE

Intelligence

File Origin
# of uploads :
1
# of downloads :
296
Origin country :
CH CH
Vendor Threat Intelligence
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/461188/
Detection(s):
SecuriteInfo.com.Trojan.MulDropNET.68.28111.22303.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Сreating synchronization primitives
Launching a process
Creating a file
Unauthorized injection to a system process
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/398d657a86bb82638352ce58d7f71da551cc07c7a0831f83a588dff8bca0ca3a
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:
Agent Tesla
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/1d167e6c-d5ff-4bf3-a631-259b632feaee
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1349875
Signature
.NET source code contains potential unpacker
Antivirus / Scanner detection for submitted sample
Antivirus detection for URL or domain
Initial sample is a PE file and has a suspicious name
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1349875 Sample: Revised_invoice.exe Startdate: 29/11/2023 Architecture: WINDOWS Score: 100 31 www.aifuturesummit.com 2->31 33 aifuturesummit.com 2->33 37 Malicious sample detected (through community Yara rule) 2->37 39 Antivirus detection for URL or domain 2->39 41 Antivirus / Scanner detection for submitted sample 2->41 43 6 other signatures 2->43 10 Revised_invoice.exe 3 2->10         started        signatures3 process4 process5 12 RegSvcs.exe 10->12         started        15 conhost.exe 10->15         started        17 RegSvcs.exe 10->17         started        19 RegSvcs.exe 10->19         started        signatures6 53 Maps a DLL or memory area into another process 12->53 21 IlMkMwXwgMZtgIwptTRUdTu.exe 12->21 injected process7 process8 23 fontview.exe 13 21->23         started        signatures9 45 Tries to steal Mail credentials (via file / registry access) 23->45 47 Tries to harvest and steal browser information (history, passwords, etc) 23->47 49 Maps a DLL or memory area into another process 23->49 51 Queues an APC in another process (thread injection) 23->51 26 IlMkMwXwgMZtgIwptTRUdTu.exe 23->26 injected 29 firefox.exe 23->29         started        process10 dnsIp11 35 aifuturesummit.com 84.32.84.32, 49739, 80 NTT-LT-ASLT Lithuania 26->35
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/398d657a86bb82638352ce58d7f71da551cc07c7a0831f83a588dff8bca0ca3a
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/398d657a86bb82638352ce58d7f71da551cc07c7a0831f83a588dff8bca0ca3a/
Threat name:
Win32.Trojan.Generic
Create hunting rule
Status:
Suspicious
First seen:
2023-11-29 07:30:18 UTC
File Type:
PE (.Net Exe)
Extracted files:
11
AV detection:
21 of 36 (58.33%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=hggwk6ugxobgha2szzmnp5y5uvi4yb6hucbr7a5frdp7rpfazi5a._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
14f4fe0a5de3161df5631f5f50d4caf56f29e6a6a26c536ac6956944d8883b0e
Formbook
259e6fc89c741d8f3a240402ffb767e833317bea4e190ba44e516adf63cd5b82
Formbook
97863fc07fc27a0f99a2d434e307d7530364bfc137f8fd36a68674f1eae3533f
Formbook
eaf0b886df577c2c4a4e658b77693ed6bf0afdad4fd05a1fbcfdb88d81d10de3
Formbook
fd2ac4af2e4d90f117a8ba49d77cc480f0ad6a8a6cfa7479384d68ce27939f1a
Formbook
+ 383 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  7/10
Tags:
n/a
Link:
https://tria.ge/reports/231129-qgm3qage2s/
Behaviour
Modifies Internet Explorer settings
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of UnmapMainImage
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Loads dropped DLL
Unpacked files
SH256 hash:
990a03f1ed57995f0493f3554296a66d28d9a7f1e675ad71fe1f0506c6784a92
MD5 hash:
6a98b4057eafa7983e042d9134dce55e
SHA1 hash:
6845830f3577367fe5b70f1cdd98cf7d20b42317
Detections:
win_formbook_w0
Create hunting rule
win_formbook_g0
Create hunting rule
Link:
https://www.unpac.me/results/bb8103a3-be98-4e1f-8ae3-cd419721df22/
Parent samples :
259e6fc89c741d8f3a240402ffb767e833317bea4e190ba44e516adf63cd5b82
14f4fe0a5de3161df5631f5f50d4caf56f29e6a6a26c536ac6956944d8883b0e
d701a8e701c6d150ac156e35b1c71024884ded86c1e8564a02c30b772b7338c1
398d657a86bb82638352ce58d7f71da551cc07c7a0831f83a588dff8bca0ca3a
SH256 hash:
9d4c6f9d71b55519e66fbafdb5dc17b82b4978b5c3d2fc841970b8da09cc3ba2
MD5 hash:
c8c0ee9ce218835fcec3898a2ab22862
SHA1 hash:
988eaf05ceccb894945b44d0d8578cf326f72d36
Link:
https://www.unpac.me/results/bb8103a3-be98-4e1f-8ae3-cd419721df22/
SH256 hash:
d01f3dea3851602ba5a0586c60430d286adf6fcc7e17aab080601a66630606e5
MD5 hash:
579197d4f760148a9482d1ebde113259
SHA1 hash:
cf6924eb360c7e5a117323bebcb6ee02d2aec86d
Link:
https://www.unpac.me/results/bb8103a3-be98-4e1f-8ae3-cd419721df22/
SH256 hash:
e88a0ecd8a546b81993a01d5b181a76b677fd22489b221456dbce358202947e1
MD5 hash:
384cfbef6fbbdbead98fc4cca80b3366
SHA1 hash:
850cb66538638faaf0b02be400c68e6de7ec873c
Link:
https://www.unpac.me/results/bb8103a3-be98-4e1f-8ae3-cd419721df22/
SH256 hash:
67264c9908e3e681ecc35587545c8925a5d6f7e42cc5df821b3ffcf573065602
MD5 hash:
5e90b83eb7e103375034d7e1faae75a6
SHA1 hash:
5e866b3f0992a8cf6587e4180a8f164c9e45a3bd
Link:
https://www.unpac.me/results/bb8103a3-be98-4e1f-8ae3-cd419721df22/
SH256 hash:
bb3e0a9f1515a3ab753bd1c54e11e579c666bef3f5e4215175f4436c4a1f2172
MD5 hash:
d82f8967c486eb89f2461f121e3f1278
SHA1 hash:
bcd93b4e357ae148718f1d0c41512121ae477222
Link:
https://www.unpac.me/results/bb8103a3-be98-4e1f-8ae3-cd419721df22/
SH256 hash:
02f09f98e76bdea66aaa7b98c95eaf08cbd1ad103d7f8fff2273bd4fed14ebe1
MD5 hash:
982439c04fc9de4f191207783858074d
SHA1 hash:
b77ee3eb808da4c07707bf5e6523c05c5c768df1
Link:
https://www.unpac.me/results/bb8103a3-be98-4e1f-8ae3-cd419721df22/
SH256 hash:
d10b450aad833819348814d1ed2776e2145f86e489369cf590f7dd9650a4c75f
MD5 hash:
ddfc1991a886cd6ee1d96832ae4ce90b
SHA1 hash:
89064c6141483bd14703b1d045bb67607515313b
Link:
https://www.unpac.me/results/bb8103a3-be98-4e1f-8ae3-cd419721df22/
SH256 hash:
8d8b29cb27f9efc4342fd516f78a81b8b85e27161e4d945720530fd3453eccf6
MD5 hash:
c3096a39d444bd77d87256915340afca
SHA1 hash:
87658983b80625259991dc851f114144dce94d9b
Link:
https://www.unpac.me/results/bb8103a3-be98-4e1f-8ae3-cd419721df22/
SH256 hash:
06263154695c7cf3dca8e6d9fc5fd387a6e7bd8c1808babbdcd153b14ac516a0
MD5 hash:
c3b329b9787c69fa4a8a391911531b81
SHA1 hash:
82824562fca6debf6048e9ff11071ebe335a00fc
Link:
https://www.unpac.me/results/bb8103a3-be98-4e1f-8ae3-cd419721df22/
SH256 hash:
33cbebd169ebd7f9541e9a33e74d8bc11d69a414c139456092e75d551fc82e5e
MD5 hash:
0655a1a6f54dbdacb9e804fd6ce6ecaa
SHA1 hash:
6da68cdd58bdc3849d114dad11b77f13f9bd2b35
Link:
https://www.unpac.me/results/bb8103a3-be98-4e1f-8ae3-cd419721df22/
SH256 hash:
398d657a86bb82638352ce58d7f71da551cc07c7a0831f83a588dff8bca0ca3a
MD5 hash:
3e7f2a560c5888e30f136a7d9ce8d4dd
SHA1 hash:
bccbe3b156582fec726ef7878e736079f957a508
Link:
https://www.unpac.me/results/bb8103a3-be98-4e1f-8ae3-cd419721df22/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/398d657a86bb/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Formbook
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/398d657a86bb82638352ce58d7f71da551cc07c7a0831f83a588dff8bca0ca3a

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:NETexecutableMicrosoft
Create hunting rule
Author:malware-lu
Rule name:pe_imphash
Create hunting rule
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
Rule name:shellcode
Create hunting rule
Author:nex
Description:Matched shellcode byte patterns
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

rar e140044671da577de0aa3fe0733611d1ae8b20cd2859a1c462c995d3a58dd4b7

Formbook

Executable exe 398d657a86bb82638352ce58d7f71da551cc07c7a0831f83a588dff8bca0ca3a

(this sample)

  
Delivery method
Other
  
Dropped by
SHA256 e140044671da577de0aa3fe0733611d1ae8b20cd2859a1c462c995d3a58dd4b7
Cape
Cape
https://www.capesandbox.com/analysis/461188/
  
Dropped by
MD5 45028195744e486c75b5e3dce5c00f71

Comments