MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 881bd1f6b3a38e6e6bf2c43c904b65beeba6a00a109319da26b360e12579ac30. 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 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 881bd1f6b3a38e6e6bf2c43c904b65beeba6a00a109319da26b360e12579ac30
SHA3-384 hash: 1935dd9380cd52612a5e9504007df2d0cbddd4e0014f80b690d2223c516842dc36dac414b159ffe041d4d442e424fba9
SHA1 hash: cb806818e7eb79287bb4d58f5a17a6dc67250b5e
MD5 hash: 9a4e0647f309dc88e1f0c2e688c23372
humanhash: fillet-idaho-oregon-steak
File name:Ordem de compra #PO358.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:848'384 bytes
First seen:2023-10-11 19:20:27 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'666 x AgentTesla, 19'479 x Formbook, 12'209 x SnakeKeylogger)
ssdeep 12288:cLX9K7Y8k74Fj4uTzVkVFFLNnz5Lq9Yq4bq2rvOqTVFeH7I1GAQpE:cLtUY89vIFLVz5ZvOQ2zAQpE
Threatray 59 similar samples on MalwareBazaar
TLSH T12705077C11689A8DF3A482BEB5728CFF17923C1F40B7B5F7A12CB4970EA97D25402661
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 abuse_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
285
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
Ordem de compra #PO358.exe
Verdict:
Malicious activity
Analysis date:
2023-10-11 19:24:57 UTC
Tags:
formbook xloader
Link:
https://app.any.run/tasks/5269436b-7b4b-401c-a0f9-df016b1870e2

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/453435/
Detection(s):
Win.Dropper.Malaz-9939293-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Adding an access-denied ACE
Сreating synchronization primitives
Creating a process with a hidden window
Creating a file in the %temp% directory
Launching a process
Creating a file
Launching cmd.exe command interpreter
Forced shutdown of a system process
Adding an exclusion to Microsoft Defender
Enabling autorun by creating a file
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/6526f5a1422e14c65a8d6431/reports/166ab530-f0f1-4659-9521-4a9983db50b1/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/881bd1f6b3a38e6e6bf2c43c904b65beeba6a00a109319da26b360e12579ac30
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:
Generic Malware
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/1e1e7f0f-db23-4799-8266-b4cb3d63b5b4
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1324160
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code contains potential unpacker
Adds a directory exclusion to Windows Defender
Allocates memory in foreign processes
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Found malware configuration
Injects a PE file into a foreign processes
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)
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
Writes to foreign memory regions
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1324160 Sample: Ordem_de_compra_#PO358.exe Startdate: 11/10/2023 Architecture: WINDOWS Score: 100 51 www.ssongg446.cfd 2->51 53 www.slimshotonline.com 2->53 55 12 other IPs or domains 2->55 71 Snort IDS alert for network traffic 2->71 73 Found malware configuration 2->73 75 Malicious sample detected (through community Yara rule) 2->75 77 10 other signatures 2->77 11 Ordem_de_compra_#PO358.exe 7 2->11         started        15 BvikHRt.exe 5 2->15         started        signatures3 process4 file5 47 C:\Users\user\AppData\Roaming\BvikHRt.exe, PE32 11->47 dropped 49 C:\Users\user\AppData\Local\...\tmp47A7.tmp, XML 11->49 dropped 85 Uses schtasks.exe or at.exe to add and modify task schedules 11->85 87 Writes to foreign memory regions 11->87 89 Allocates memory in foreign processes 11->89 95 2 other signatures 11->95 17 RegSvcs.exe 11->17         started        20 powershell.exe 23 11->20         started        22 schtasks.exe 1 11->22         started        91 Antivirus detection for dropped file 15->91 93 Machine Learning detection for dropped file 15->93 24 RegSvcs.exe 15->24         started        26 schtasks.exe 1 15->26         started        signatures6 process7 signatures8 63 Modifies the context of a thread in another process (thread injection) 17->63 65 Maps a DLL or memory area into another process 17->65 67 Sample uses process hollowing technique 17->67 69 2 other signatures 17->69 28 explorer.exe 38 1 17->28 injected 32 conhost.exe 20->32         started        34 conhost.exe 22->34         started        36 conhost.exe 26->36         started        process9 dnsIp10 57 paover.com 72.10.173.130, 49723, 80 GTCOMMCA Canada 28->57 59 www.ssongg446.cfd 38.238.166.73, 49720, 80 COGENT-174US United States 28->59 61 5 other IPs or domains 28->61 97 System process connects to network (likely due to code injection or exploit) 28->97 38 WWAHost.exe 28->38         started        41 control.exe 28->41         started        signatures11 process12 signatures13 79 Modifies the context of a thread in another process (thread injection) 38->79 81 Maps a DLL or memory area into another process 38->81 83 Tries to detect virtualization through RDTSC time measurements 38->83 43 cmd.exe 1 38->43         started        process14 process15 45 conhost.exe 43->45         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/881bd1f6b3a38e6e6bf2c43c904b65beeba6a00a109319da26b360e12579ac30/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2023-10-11 19:21:08 UTC
File Type:
PE (.Net Exe)
Extracted files:
28
AV detection:
13 of 38 (34.21%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=ran5d5vtuohg427syq6jas3fx3v2niakccjrtwrgwnqocjlzvqya._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
15426243aa8d60c8592a759e72f42ee2b1d9f2cbf96018c565ce70fd6778ca33
Formbook
1be417c3be0fcbe972e13bd2d3e4494e08a94bd4f572b361cadae3b88be1cc5b
Formbook
3e1c698228509853ff20630c605525450e37d2741f7137b3784a21d4e5d7a998
Formbook
4af5374d05140e1ebf05625397c061e7e6e6396597399880f903cdda22466875
Formbook
64fdde31e18afd348c0727affafb347f0cd0203ec20268fbea9dcb4cc6d1caa9
Formbook
6ec844914b335f0e27b9f536da5691fcc06e6ecc80d0af8dd7bc3ed8b3ee0a60
Formbook
b8e44f4a0d92297c5bb5b217c121f0d032850b38749044face2b0014e789adfb
Formbook
d1fdb78142a09be2db38f3e704f9cc96649745d1055eef07a702ed674cb4b9ed
Formbook
f9a4e3002fdbcd93464f38fc49bebadbcc0417454c702e8298cf245fc751eee9
Formbook
+ 49 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:ey16 rat spyware stealer trojan
Link:
https://tria.ge/reports/231011-x2n9vaab95/
Behaviour
Creates scheduled task(s)
Gathers network information
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of UnmapMainImage
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Checks computer location settings
Formbook payload
Formbook
Unpacked files
SH256 hash:
5be1f28d9498131099c4989b821b1a289e9ee6475472309482db944fc99e2fab
MD5 hash:
c1d50dfc28e785fef6639c4619cea4af
SHA1 hash:
39ef93d0350a6edd0bbbeabf0ff361fbd913f8fe
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/5e48e3bb-3afa-4a94-bc95-c7211f51d903/
Parent samples :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 hash:
a040efb5ce92995b5d40fd2536c8ad6a93f2d8584a3dd52f07cdb0b34c9e6e29
MD5 hash:
a5a52675690de850e3de6c05a9bd885f
SHA1 hash:
fd953edf2e910fbb43c9e6d4c8d48632bb4e55c6
Link:
https://www.unpac.me/results/5e48e3bb-3afa-4a94-bc95-c7211f51d903/
SH256 hash:
b1270dc9ec3f22c6fd2296239426ac7c48589589580d4a1b3da8188920b22a63
MD5 hash:
5c904da8528cfb1b87b15a6aa7c059cd
SHA1 hash:
f0a192969485d1bc34bf52adf37d9c20176d6b85
Link:
https://www.unpac.me/results/5e48e3bb-3afa-4a94-bc95-c7211f51d903/
SH256 hash:
23c91169b260c34380e341e0544ac716daf5fc081712294e9a32785211b4c4fa
MD5 hash:
1b8d17af018d4dd1cde91cda3982a40c
SHA1 hash:
d8856b401002e4392bcfe17b232cd9a038ad0f5d
Link:
https://www.unpac.me/results/5e48e3bb-3afa-4a94-bc95-c7211f51d903/
SH256 hash:
881bd1f6b3a38e6e6bf2c43c904b65beeba6a00a109319da26b360e12579ac30
MD5 hash:
9a4e0647f309dc88e1f0c2e688c23372
SHA1 hash:
cb806818e7eb79287bb4d58f5a17a6dc67250b5e
Link:
https://www.unpac.me/results/5e48e3bb-3afa-4a94-bc95-c7211f51d903/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/881bd1f6b3a3/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/881bd1f6b3a38e6e6bf2c43c904b65beeba6a00a109319da26b360e12579ac30

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:NET
Create hunting rule
Author:malware-lu
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

Executable exe 881bd1f6b3a38e6e6bf2c43c904b65beeba6a00a109319da26b360e12579ac30

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/453435/

Comments