MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a142861cbfa6ccbce12de18b16812883dddd698d858353e985f9a29350652e31. 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: 17


Intelligence 17 IOCs YARA 1 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a142861cbfa6ccbce12de18b16812883dddd698d858353e985f9a29350652e31
SHA3-384 hash: 22ed1e5aac37dee5ed1deb9bf45a152fe885e7c082b83d28f65e36de941bfbacfd7c8f4cd9fe01be5b3806dd9ae60194
SHA1 hash: d238d61266e8b70c285063b1f505157a94323fe8
MD5 hash: ecad8b17e61695eb5cfca4cb57c4f8b1
humanhash: bacon-nevada-hamper-island
File name:PO. 4300000894.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:278'837 bytes
First seen:2023-08-18 09:01:48 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 61259b55b8912888e90f516ca08dc514 (1'059 x Formbook, 741 x AgentTesla, 427 x GuLoader)
ssdeep 3072:3fY/TU9fE9PEtuQVbAqH+1Vm4f9O89PUt6aZ4Gn6CI2XWzKyeLq3wLcVUB0T/PSE:vYa6Y3HoJfJUtzZ4IbyXUiTCqn/5
Threatray 3'777 similar samples on MalwareBazaar
TLSH T15F54120573A4C07FEB825B325EBB1E275BE5D81110AAA70F1764AA0E3C77B86D11B713
TrID 47.3% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13)
15.9% (.EXE) Win64 Executable (generic) (10523/12/4)
9.9% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
7.6% (.EXE) Win16 NE executable (generic) (5038/12/1)
6.8% (.EXE) Win32 Executable (generic) (4505/5/1)
File icon (PE):PE icon
dhash icon b2a89c96a2cada72 (2'283 x Formbook, 981 x Loki, 803 x AgentTesla)
Reporter cocaman
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
285
Origin country :
CH CH
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
PO. 4300000894.exe
Verdict:
Malicious activity
Analysis date:
2023-08-18 09:03:55 UTC
Tags:
formbook xloader stealer spyware
Link:
https://app.any.run/tasks/a39bc6f3-b7f9-46a5-891b-27b3f412f57b

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/443432/
Detection(s):
Sanesecurity.Rogue.0hr.20230818-0240.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file in the %temp% directory
Creating a window
Creating a file
Unauthorized injection to a recently created process
Restart of the analyzed sample
Searching for synchronization primitives
Launching a process
Сreating synchronization primitives
Launching cmd.exe command interpreter
Setting browser functions hooks
Unauthorized injection to a system process
Unauthorized injection to a browser process
Result
Malware family:
n/a
Score:
  5/10
Tags:
n/a
Link:
https://dragonfly.certego.net/analysis/103116/overview
Behaviour
MalwareBazaar
Gathering data
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/a142861cbfa6ccbce12de18b16812883dddd698d858353e985f9a29350652e31
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/c4fea243-5260-4432-b496-b719ded4c7b7
Result
Threat name:
FormBook, NSISDropper
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1293310
Signature
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Detected unpacking (changes PE section rights)
Found evasive API chain (may stop execution after reading information in the PEB, e.g. number of processors)
Found malware configuration
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
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
Yara detected FormBook
Yara detected NSISDropper
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1293310 Sample: PO._4300000894.exe Startdate: 18/08/2023 Architecture: WINDOWS Score: 100 36 Snort IDS alert for network traffic 2->36 38 Found malware configuration 2->38 40 Malicious sample detected (through community Yara rule) 2->40 42 8 other signatures 2->42 10 PO._4300000894.exe 18 2->10         started        process3 file4 28 C:\Users\user\AppData\Local\...\ksihggss.dll, PE32 10->28 dropped 52 Detected unpacking (changes PE section rights) 10->52 54 Found evasive API chain (may stop execution after reading information in the PEB, e.g. number of processors) 10->54 56 Maps a DLL or memory area into another process 10->56 58 Tries to detect virtualization through RDTSC time measurements 10->58 14 PO._4300000894.exe 10->14         started        signatures5 process6 signatures7 60 Modifies the context of a thread in another process (thread injection) 14->60 62 Maps a DLL or memory area into another process 14->62 64 Sample uses process hollowing technique 14->64 66 Queues an APC in another process (thread injection) 14->66 17 explorer.exe 2 6 14->17 injected process8 dnsIp9 30 saspresence.perf1.com 81.92.80.55, 49739, 80 NAMESHIELDFR France 17->30 32 tiktokviewer.com 86.38.202.98, 49754, 80 LRTC-ASLT Lithuania 17->32 34 15 other IPs or domains 17->34 44 System process connects to network (likely due to code injection or exploit) 17->44 21 cscript.exe 17->21         started        signatures10 process11 signatures12 46 Modifies the context of a thread in another process (thread injection) 21->46 48 Maps a DLL or memory area into another process 21->48 50 Tries to detect virtualization through RDTSC time measurements 21->50 24 cmd.exe 1 21->24         started        process13 process14 26 conhost.exe 24->26         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/a142861cbfa6ccbce12de18b16812883dddd698d858353e985f9a29350652e31/
Threat name:
Win32.Trojan.Leonem
Create hunting rule
Status:
Malicious
First seen:
2023-08-17 23:16:04 UTC
File Type:
PE (Exe)
Extracted files:
3
AV detection:
24 of 38 (63.16%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=ufbimhf7u3glzyjn4gfrnajiqpo522mnqwbvh2mf7grjgudffyyq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
190090b95e7c9b2410ceb2149bb1c4369550963e56693e331bda3d020a0018e2
Formbook
369de2afba1e4a4807ac66f57dfb436ec13cd46a5c09f6a4d7faedc788d04be7
Formbook
57b5c0581d2170ca86ffe5ec13269dc3b7813d46476d82ade07c7f49bd95eae6
Formbook
5f4316e6d654f612b1aa557b15eae6502979697bcd4cdc101b49c2297a6dca14
Formbook
63d353bf92bb9d4fa31656308d30a39b91b8dd4005d6254502b1e829b74ae79a
Formbook
69b78313535ef2b6dc89c71b8c389907e8a02cccb5d9fdee05833d69aac84c0f
Formbook
7a123e291c6c3bca48da92da78abd1157469dd5885f7af234e9114bcc5c8f061
Formbook
a318197c6b7d13969ec28187327e1005ac7d39f969ef27b81f7967870e896378
Formbook
+ 3'767 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/230818-kzfhpsaa3z/
Behaviour
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Enumerates physical storage devices
Suspicious use of SetThreadContext
Deletes itself
Loads dropped DLL
Formbook payload
Formbook
Unpacked files
SH256 hash:
c25cba2a05f8afe3f64fb242fad0e1c7feae6d22f2b23dd5c6b706db348934d2
MD5 hash:
14e22ae4ed199d82ca68becea69c82d3
SHA1 hash:
343d91b80f41dc3ee9cf462bf0b871f7ecdc8b10
Link:
https://www.unpac.me/results/e70904c3-ad22-48ea-89e0-e3fdc9931b09/
SH256 hash:
a142861cbfa6ccbce12de18b16812883dddd698d858353e985f9a29350652e31
MD5 hash:
ecad8b17e61695eb5cfca4cb57c4f8b1
SHA1 hash:
d238d61266e8b70c285063b1f505157a94323fe8
Link:
https://www.unpac.me/results/e70904c3-ad22-48ea-89e0-e3fdc9931b09/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/a142861cbfa6/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/a142861cbfa6ccbce12de18b16812883dddd698d858353e985f9a29350652e31

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:shellcode
Create hunting rule
Author:nex
Description:Matched shellcode byte patterns

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Malspam

Formbook

zip db66372c6b7aa0cf62904fd282fb32790cd3070dbef43420169e6687d150cd9e

Formbook

Executable exe a142861cbfa6ccbce12de18b16812883dddd698d858353e985f9a29350652e31

(this sample)

  
Delivery method
Other
  
Dropped by
SHA256 db66372c6b7aa0cf62904fd282fb32790cd3070dbef43420169e6687d150cd9e
Cape
Cape
https://www.capesandbox.com/analysis/443432/
  
Dropped by
MD5 02288e5cf0757a9ed7c4039738ad0c93

Comments