MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 2c81b04d9509cf29e05309b84972fa9bf47b34bdf64032ade464fcc55a54a1b8. 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
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SHA256 hash: 2c81b04d9509cf29e05309b84972fa9bf47b34bdf64032ade464fcc55a54a1b8
SHA3-384 hash: fab977a33eaa495971fd1fd7c56808f23a0fef0322033a3423e5dab6dba55ff9a2c36ebd730bda8f17e5408b4deeae59
SHA1 hash: 05edd6c8ac9fa48b730d17fee7968da8045ae5b9
MD5 hash: 9dcd69d5183d9ecc880c393364171ee7
humanhash: colorado-hamper-dakota-pennsylvania
File name:triage_dropped_file
Download: download sample
Signature Formbook
Create hunting rule
File size:1'187'840 bytes
First seen:2022-03-22 12:39:53 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'660 x AgentTesla, 19'470 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 24576:299YGbW0lSVe9v/hhLlHfUDpiiIjq+iJvAI08TZut3bOdF:S6GbW0lSVe9v3Ll/U0tuJZ08x
Threatray 14'302 similar samples on MalwareBazaar
TLSH T11945E0A121FF5EB6C13B97F1F491FABA0EE17F08D601D1BA497368C591E2728743410A
Reporter malwarelabnet
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
200
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
http://103.149.13.56/cloud__to_drive/.svchost.exe
Verdict:
Malicious activity
Analysis date:
2022-03-22 05:50:02 UTC
Tags:
opendir loader trojan formbook stealer
Link:
https://app.any.run/tasks/f5c6094c-eca8-421d-9450-48b1bd03c7df

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/254118/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Сreating synchronization primitives
Unauthorized injection to a recently created process
Creating a file
Searching for synchronization primitives
Launching a process
Launching cmd.exe command interpreter
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
fareit obfuscated packed
Link:
https://www.filescan.io/uploads/6239c3abb94fb38cb4ce4ecd/reports/ca09684d-aabe-4257-94d6-1d34934745f3/overview
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.
Malware family:
Formbook
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/e9345314-a75e-4bb6-8515-8e301e012ebc
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/961627
Signature
.NET source code contains potential unpacker
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 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 submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Self deletion via cmd delete
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
Uses netstat to query active network connections and open ports
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 594108 Sample: triage_dropped_file Startdate: 22/03/2022 Architecture: WINDOWS Score: 100 32 Found malware configuration 2->32 34 Malicious sample detected (through community Yara rule) 2->34 36 Antivirus detection for URL or domain 2->36 38 8 other signatures 2->38 10 triage_dropped_file.exe 3 2->10         started        process3 file4 28 C:\Users\user\...\triage_dropped_file.exe.log, ASCII 10->28 dropped 52 Tries to detect virtualization through RDTSC time measurements 10->52 54 Injects a PE file into a foreign processes 10->54 14 triage_dropped_file.exe 10->14         started        signatures5 process6 signatures7 56 Modifies the context of a thread in another process (thread injection) 14->56 58 Maps a DLL or memory area into another process 14->58 60 Sample uses process hollowing technique 14->60 62 Queues an APC in another process (thread injection) 14->62 17 explorer.exe 14->17 injected process8 dnsIp9 30 www.ngfdistribution.com 17->30 40 System process connects to network (likely due to code injection or exploit) 17->40 42 Uses netstat to query active network connections and open ports 17->42 21 NETSTAT.EXE 17->21         started        signatures10 process11 signatures12 44 Self deletion via cmd delete 21->44 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/2c81b04d9509cf29e05309b84972fa9bf47b34bdf64032ade464fcc55a54a1b8/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2022-03-22 04:55:06 UTC
File Type:
PE (.Net Exe)
Extracted files:
9
AV detection:
20 of 26 (76.92%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=fsa3atmvbhhstyctbg4es4x2tp2hwnf56zadflpemt6mkwsuug4a._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
1c1c755e4827a8d1918edff4c58f088ba57fdea5358ba3d627645836703a499f
Formbook
909570efc48341a6ae00ae8dcbb8d751f912569a4756f7526bc7d0cf1cda81ed
Formbook
9621e6459dc138fb11bc279b6583fc68eed0db7b284e198c74dda8385db8ce0d
Formbook
a6525de47e9c194acea3d0048b4633a9bb0f0bab0bfe2eb5e1ec3aa126909e32
Formbook
b0b6191866c81bd822102f7f74d1df215f5f3a38552665d7e1e69628e7859f1d
Formbook
c6a3fd36f07d97fb287fbac946ae8b8d12d1fcde36fa87395de79d59f0c3fb77
Formbook
eb6a3606545277e3af8270d85b4940be7a710dcaf11c7351755675d81ce82d02
Formbook
ff3e94ded64b43f620ba549db99baa31abdd763209b60f7c9fc884b82cfac6d3
Formbook
+ 14'292 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:w26e rat spyware stealer trojan
Link:
https://tria.ge/reports/220322-pv9cfafah7/
Behaviour
Modifies data under HKEY_USERS
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Program crash
Suspicious use of SetThreadContext
Formbook Payload
Formbook
Unpacked files
SH256 hash:
f6acc7a3be7cd6ce48cb46b5eedc3ee00322f3b6b4b602751420e9f6fd13a77a
MD5 hash:
981369f1ffdbccbfc64768cb39c9c305
SHA1 hash:
b53ccfbbbf0a49fc81685b8204d7d9334031566d
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/b7b8e169-3705-4cfc-87a8-7c49a03aa988/
Parent samples :
b0b6191866c81bd822102f7f74d1df215f5f3a38552665d7e1e69628e7859f1d
a6525de47e9c194acea3d0048b4633a9bb0f0bab0bfe2eb5e1ec3aa126909e32
1c1c755e4827a8d1918edff4c58f088ba57fdea5358ba3d627645836703a499f
9621e6459dc138fb11bc279b6583fc68eed0db7b284e198c74dda8385db8ce0d
2c81b04d9509cf29e05309b84972fa9bf47b34bdf64032ade464fcc55a54a1b8
e4d0ebfd2e92b3848aa302ff71782e2bb7b55b1340f340c89e263e9d1a2a6987
SH256 hash:
6ff21c090296e9fd3ec2b17e03e184e2396adf4013b2a4f4c9dea5bd7aff38f7
MD5 hash:
7c3fb3e3d91e338ae917c4cb46895e71
SHA1 hash:
ba577b8ccb3c6bbc5e9e3a838aec98859cd4dbaa
Link:
https://www.unpac.me/results/b7b8e169-3705-4cfc-87a8-7c49a03aa988/
SH256 hash:
6a8978d488c0a04ff636c99ce1cbe87bdd7d34dea5d30f2afaf7e436138512d5
MD5 hash:
ea3ac92494d372a8c7a6988eae3e20e1
SHA1 hash:
5943818348785fd88598e21bd9ff29ab1054e361
Link:
https://www.unpac.me/results/b7b8e169-3705-4cfc-87a8-7c49a03aa988/
SH256 hash:
0b7acc3b03b4ccd5872fb0719de8aafbb557f82664ab4f7f37b525f73347702c
MD5 hash:
ea9715ad6e454d6f4f9bfb91f67e6410
SHA1 hash:
233aca1a45b5054ad0387d8bb296890c7351569f
Link:
https://www.unpac.me/results/b7b8e169-3705-4cfc-87a8-7c49a03aa988/
SH256 hash:
2c81b04d9509cf29e05309b84972fa9bf47b34bdf64032ade464fcc55a54a1b8
MD5 hash:
9dcd69d5183d9ecc880c393364171ee7
SHA1 hash:
05edd6c8ac9fa48b730d17fee7968da8045ae5b9
Link:
https://www.unpac.me/results/b7b8e169-3705-4cfc-87a8-7c49a03aa988/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.54
Link:
https://yomi.yoroi.company/submissions/2c81b04d9509cf29e05309b84972fa9bf47b34bdf64032ade464fcc55a54a1b8

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.

Cape
Cape
https://www.capesandbox.com/analysis/254118/

Comments