MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 331a1fa77bd0b90483ec0d32a815e1e766f75ce389a8c9f26f24d3db61459e20. 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
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 331a1fa77bd0b90483ec0d32a815e1e766f75ce389a8c9f26f24d3db61459e20
SHA3-384 hash: bb1fd73c6f699cbbfed67a6d04a2607f3c4bdb776ce68b2e15d9e823735b50dd9dcfd94cffc5aacb151ee7cf177e7be9
SHA1 hash: ff17e0b7a147710baad211d4067ec1942e6559cf
MD5 hash: 969b812603a67a1678ece6bb07742025
humanhash: may-venus-don-tango
File name:rasbp altaa saprbqbr.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:863'744 bytes
First seen:2023-03-07 07:48:43 UTC
Last seen:2023-03-07 09:28:39 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'662 x AgentTesla, 19'477 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 12288:klXOOBxCcIii1n6/sHH/NWOV1nMulMa4uvcBhy8x6E/:0EcIh6/slWOV1Mwv+yNq
Threatray 2'198 similar samples on MalwareBazaar
TLSH T18805B0E42F5D7263E786A1F3680426A7DBACBA5D6527D0441EE210CFC1CDE7C1112EAE
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)
File icon (PE):PE icon
dhash icon 2892cc7092280000 (4 x AgentTesla, 3 x Formbook, 2 x Loki)
Reporter cocaman
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
209
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
rasbp altaa saprbqbr.exe
Verdict:
Malicious activity
Analysis date:
2023-03-07 07:51:34 UTC
Tags:
formbook xloader
Link:
https://app.any.run/tasks/c88eea21-6570-42ad-98ad-1ab1ed35704e

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/372158/
Detection(s):
Sanesecurity.Malware.28872.BadIN4.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Sending a custom TCP request
Сreating synchronization primitives
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Adding an access-denied ACE
Creating a process from a recently created file
Creating a process with a hidden window
Creating a file in the %temp% directory
Launching a process
Launching cmd.exe command interpreter
Forced shutdown of a system process
Enabling autorun by creating a file
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
80%
Tags:
packed
Link:
https://www.filescan.io/uploads/6406ec71f0e60f7e2db8c1c7/reports/e6ca2dd3-2965-4feb-a30d-fb764681a98e/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_90%
Link:
https://www.hybrid-analysis.com/sample/331a1fa77bd0b90483ec0d32a815e1e766f75ce389a8c9f26f24d3db61459e20
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.
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/9a5c76e3-8177-4d37-8b09-99e4e55dafd8
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1188399
Signature
Adds a directory exclusion to Windows Defender
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
C2 URLs / IPs found in malware configuration
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)
Modifies the prolog of user mode functions (user mode inline hooks)
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
Sigma detected: Scheduled temp file as task from temp location
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 schtasks.exe or at.exe to add and modify task schedules
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 821275 Sample: rasbp_altaa_saprbqbr.exe Startdate: 07/03/2023 Architecture: WINDOWS Score: 100 56 www.oyuntirik.com 2->56 74 Snort IDS alert for network traffic 2->74 76 Malicious sample detected (through community Yara rule) 2->76 78 Antivirus / Scanner detection for submitted sample 2->78 80 6 other signatures 2->80 11 rasbp_altaa_saprbqbr.exe 7 2->11         started        15 zTICQWxcloNdlb.exe 5 2->15         started        signatures3 process4 file5 48 C:\Users\user\AppData\...\zTICQWxcloNdlb.exe, PE32 11->48 dropped 50 C:\...\zTICQWxcloNdlb.exe:Zone.Identifier, ASCII 11->50 dropped 52 C:\Users\user\AppData\Local\...\tmp1486.tmp, XML 11->52 dropped 54 C:\Users\...\rasbp_altaa_saprbqbr.exe.log, CSV 11->54 dropped 90 Uses schtasks.exe or at.exe to add and modify task schedules 11->90 92 Adds a directory exclusion to Windows Defender 11->92 17 RegSvcs.exe 11->17         started        20 powershell.exe 21 11->20         started        22 schtasks.exe 1 11->22         started        94 Antivirus detection for dropped file 15->94 96 Multi AV Scanner detection for dropped file 15->96 98 Machine Learning detection for dropped file 15->98 24 RegSvcs.exe 15->24         started        26 schtasks.exe 1 15->26         started        signatures6 process7 signatures8 66 Modifies the context of a thread in another process (thread injection) 17->66 68 Maps a DLL or memory area into another process 17->68 70 Sample uses process hollowing technique 17->70 72 2 other signatures 17->72 28 explorer.exe 4 6 17->28 injected 32 conhost.exe 20->32         started        34 conhost.exe 22->34         started        36 conhost.exe 26->36         started        process9 dnsIp10 60 www.ciceroneto.com 156.254.249.87, 49690, 80 XIAOZHIYUN1-AS-APICIDCNETWORKUS Seychelles 28->60 62 www.helokq.cfd 146.70.149.41, 80 TENET-1ZA United Kingdom 28->62 64 9 other IPs or domains 28->64 100 System process connects to network (likely due to code injection or exploit) 28->100 38 rundll32.exe 28->38         started        42 explorer.exe 28->42         started        signatures11 process12 dnsIp13 58 www.helokq.cfd 38->58 82 System process connects to network (likely due to code injection or exploit) 38->82 84 Modifies the context of a thread in another process (thread injection) 38->84 86 Maps a DLL or memory area into another process 38->86 44 cmd.exe 38->44         started        88 Tries to detect virtualization through RDTSC time measurements 42->88 signatures14 process15 process16 46 conhost.exe 44->46         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/331a1fa77bd0b90483ec0d32a815e1e766f75ce389a8c9f26f24d3db61459e20/
Threat name:
ByteCode-MSIL.Trojan.Tnega
Create hunting rule
Status:
Malicious
First seen:
2023-03-07 03:33:37 UTC
File Type:
PE (.Net Exe)
Extracted files:
11
AV detection:
19 of 38 (50.00%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=gmnb7j332c4qja7mbuzkqfpb45tpoxhdrgumt4tpetj5wykftyqa._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
07d1fbe440d512969adadf047def89d10cc5f9d872dc23ec5cd01be90b75f6ef
Formbook
174ae377574d8702e3a1122550b06c553a492ec6c9a92f1eb71971593fe7ab0d
Formbook
2666d6497d3cc713c61afcf15370f3f4efd89e1dd719afcb99c1184236b35112
Formbook
4c82ea367bd7a79a5ef059e8f1910af89374e4e4fb75819c5540f3126904c33d
Formbook
5dc78112397a04a6b3cef6f63aa0c817e641cb4cefb8fd91958cdfed48d57bbe
Formbook
5e517d06a3b252c0bced1ed16f1741fa73b4e0d4b81ec2daf71b57954604afc8
Formbook
71dcb6b22366d8b555334f2a381b3844df412e0b3b377420e7843f473726ff27
Formbook
9e8c945e4dce2949d4c36405c11ad924f4aa57bcc9dc32a409cef23fbc725710
Formbook
bca421b3a0733bed5bb998a6fd9aac04e11cb6ef6136edc630e87d8494d52a83
Formbook
bedb5ef007caf41eb52f0331f1fdf5997271a828df7adb1e1132063129eba99e
Formbook
+ 2'188 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:de12 rat spyware stealer trojan
Link:
https://tria.ge/reports/230307-jnn52agf4w/
Behaviour
Creates scheduled task(s)
Modifies registry class
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
Suspicious use of SetThreadContext
Checks computer location settings
Formbook payload
Formbook
Unpacked files
SH256 hash:
47c67811d762bacc315a31a06dc94f9e541c018514540349749c70c0a2c247c9
MD5 hash:
ccdd83a29d92c3387adcec49f1a1d623
SHA1 hash:
8d82521925c19ec179b8d0d624f2a90ab079b3b8
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/f4446ad4-e59c-4e11-9b6e-b29933c0c48f/
Parent samples :
6ed1841d8da5de23418d6537bd4113571b5978b5ea1199b33b24efe09d84a727
5dc78112397a04a6b3cef6f63aa0c817e641cb4cefb8fd91958cdfed48d57bbe
331a1fa77bd0b90483ec0d32a815e1e766f75ce389a8c9f26f24d3db61459e20
ba5bc20c0063cb1a4e8192d7a552cd7dba167607b57e2f44552df8a34ed490ad
a442f82c38de8318198d6dd2415b2ff10eb9851e20687ba6d4105525d1e56f0b
2e423af6933fc3a0ea48495c544378ced38053a65b5d386648e4e083d1b90198
SH256 hash:
498c0460da26cfc2c4ec95b9b394bbd3db719ba08ccbd5964a533bc9006dcf8f
MD5 hash:
f4e7e91d4fdda2d3feb401b5b1d53abf
SHA1 hash:
cf9e76e6418850ac853bd9c6ce82a0be7920fc1d
Link:
https://www.unpac.me/results/f4446ad4-e59c-4e11-9b6e-b29933c0c48f/
SH256 hash:
d06df7395d561e198f9b7c5481567116ff2e4c2e84437c018d2a2c8ea6c4ca37
MD5 hash:
0fb6061f7d37424fb9e6d0e76b019c19
SHA1 hash:
98a64bf7b459f032d6ec5793003bf61b5ae1dd74
Link:
https://www.unpac.me/results/f4446ad4-e59c-4e11-9b6e-b29933c0c48f/
Parent samples :
495607b1aef01bf7dfb64b5cb16a8fc0f161c2923627d71c69de97328f8eca3f
2434aa78b46a3afc98fa6e888c3eb56278ba52b0ff800e7e875af9c2e7f9011a
SH256 hash:
a133aec0054da307abab9f12ff6289aab5559fa8eb909f0e397f2bb5bb0b4dd8
MD5 hash:
a71bcd4783c97fb29334ce531d2e5fe8
SHA1 hash:
95b74e52523bb555a492891be82c3fa976c9a159
Link:
https://www.unpac.me/results/f4446ad4-e59c-4e11-9b6e-b29933c0c48f/
SH256 hash:
7b3027fcbf58b6194501ad029d4cea9a1933588b17a834a89aedac732ff7b9de
MD5 hash:
9c0ce6557dbcecaf6ca4d9447f556be3
SHA1 hash:
20eea8149f3771cf9f8c6a4cb5e76e023425c738
Link:
https://www.unpac.me/results/f4446ad4-e59c-4e11-9b6e-b29933c0c48f/
SH256 hash:
331a1fa77bd0b90483ec0d32a815e1e766f75ce389a8c9f26f24d3db61459e20
MD5 hash:
969b812603a67a1678ece6bb07742025
SHA1 hash:
ff17e0b7a147710baad211d4067ec1942e6559cf
Link:
https://www.unpac.me/results/f4446ad4-e59c-4e11-9b6e-b29933c0c48f/
Malware family:
XLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/331a1fa77bd0/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.90
Link:
https://yomi.yoroi.company/submissions/331a1fa77bd0b90483ec0d32a815e1e766f75ce389a8c9f26f24d3db61459e20

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
Create hunting rule
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 2825836dc19914ce12e95e4d79c686493467dc79ad732fc7ff4423bd5bad4df4

Formbook

Executable exe 331a1fa77bd0b90483ec0d32a815e1e766f75ce389a8c9f26f24d3db61459e20

(this sample)

  
Delivery method
Other
  
Dropped by
SHA256 2825836dc19914ce12e95e4d79c686493467dc79ad732fc7ff4423bd5bad4df4
Cape
Cape
https://www.capesandbox.com/analysis/372158/
  
Dropped by
MD5 447469d4745267e6aa0b64cec76034c1

Comments