MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 eca9be257354d26e49e1b03d1b8d42228cf66b5ee1b1236afad3c348da43c48b. 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: 11


Intelligence 11 IOCs YARA 3 File information Comments
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SHA256 hash: eca9be257354d26e49e1b03d1b8d42228cf66b5ee1b1236afad3c348da43c48b
SHA3-384 hash: 85c696d5eede7b3206c0d9a0dbf86dabc9a3cd25d3980555ce08103aa658ddbce8e6e1557365ec7852ca1e44e08f62d3
SHA1 hash: aba682dc409e12bff3662b62acedda55cf2e8ef6
MD5 hash: 66d2c4da32eb268aecaca139ef591adb
humanhash: finch-stairway-green-lactose
File name:66d2c4da32eb268aecaca139ef591adb.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:627'712 bytes
First seen:2021-09-28 06:28:29 UTC
Last seen:2021-09-30 14:06:47 UTC
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:hz7z3Ni+hBr7IUAwE3t35eevCCiPdIVJ66wcCG8:hTNi+hBr8UAV3t3uC+dlAs
Threatray 9'679 similar samples on MalwareBazaar
TLSH T16FD49DDA1EB453DBFB5E01F8F9782B8813BA9028E59BF3C2CA45B0B351367644910DD6
Reporter abuse_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
3
# of downloads :
151
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
66d2c4da32eb268aecaca139ef591adb.exe
Verdict:
Suspicious activity
Analysis date:
2021-09-28 06:35:51 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/b9963dd0-0375-48ec-9741-7694c8ae0f00

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/192397/
Detection(s):
SecuriteInfo.com.Scr.Malcodegdn30.14006.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Launching a process
Creating a file in the %temp% directory
Delayed writing of the file
Malware family:
Formbook
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Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/bdcaf401-c29a-4a0f-a588-1a7f5e9a921e
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/859544
Signature
.NET source code contains potential unpacker
.NET source code contains very large strings
C2 URLs / IPs found in malware configuration
Found malware configuration
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
Sigma detected: Bad Opsec Defaults Sacrificial Processes With Improper Arguments
Sigma detected: Suspicious Rundll32 Without Any CommandLine Params
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
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 491975 Sample: 69TOt7FlXE.exe Startdate: 28/09/2021 Architecture: WINDOWS Score: 100 36 Found malware configuration 2->36 38 Malicious sample detected (through community Yara rule) 2->38 40 Multi AV Scanner detection for submitted file 2->40 42 9 other signatures 2->42 10 69TOt7FlXE.exe 3 2->10         started        process3 file4 28 C:\Users\user\AppData\...\69TOt7FlXE.exe.log, ASCII 10->28 dropped 54 Tries to detect virtualization through RDTSC time measurements 10->54 14 69TOt7FlXE.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.spdrum.com 17->30 32 www.eastwestasia-thailand.com 17->32 34 spdrum.com 34.102.136.180, 49785, 80 GOOGLEUS United States 17->34 44 System process connects to network (likely due to code injection or exploit) 17->44 21 rundll32.exe 17->21         started        signatures10 process11 signatures12 46 Self deletion via cmd delete 21->46 48 Modifies the context of a thread in another process (thread injection) 21->48 50 Maps a DLL or memory area into another process 21->50 52 Tries to detect virtualization through RDTSC time measurements 21->52 24 cmd.exe 1 21->24         started        process13 process14 26 conhost.exe 24->26         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/eca9be257354d26e49e1b03d1b8d42228cf66b5ee1b1236afad3c348da43c48b/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
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Status:
Malicious
First seen:
2021-09-28 04:52:06 UTC
AV detection:
7 of 45 (15.56%)
Threat level:
  5/5
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
4c5887639c1dfcc0349690d98e9c8034029a6fa2f2e6bdbba96371bf23ce3301
Formbook
644b959318e7825454d8cdd4af75ddeb489c94a7754da360d4cd155bccc3a669
Formbook
67cb5ce28fc7e9a5dae6c7be6da453844762fdea43d985cfc761c1ded66487f0
Formbook
7024147e75938acd54b804df172c63b57c794e1980632c5f8190ae1e9d0da82a
Formbook
972f5e016ffc306524d7083a5a5058ba8b5fc60f3db9f3c0915db59c0523a487
Formbook
9d503fba930fcf9724778a17659948875302b2fc7148c82779c29dfc18fb8cc3
Formbook
a2d7a6453efd6b8c31af2e225ae7f93064d44fe328b5bb2e530d820e5e6ca5f8
Formbook
c63cb761da677849b8382eb1d926569f00a04d57f2c789b63e7f2eb2e368a00c
Formbook
d2d6a8c31acdd92eb9a005e2fac8838a382ab0425fc01bc88616bda185ab7b4c
Formbook
daac858e9ca5b0c8044385c2d94cbef17c41b0bd5c569ad7e03f0a51b4caab7a
Formbook
+ 9'669 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:hht8 rat spyware stealer trojan
Link:
https://tria.ge/reports/210928-g8yh4aaha8/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Formbook Payload
Formbook
Malware Config
C2 Extraction:
http://www.eastwestasia-thailand.com/hht8/
Unpacked files
SH256 hash:
48459634eba659519338b240508855de6d6b628519562908f3454431b3605ffd
MD5 hash:
f3145d5fda984015011f010059147475
SHA1 hash:
82ec929841462ffcd0f05d1a114952fa08aacc96
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/0e7fe916-bf35-4ab0-a89a-2c76c0bf9158/
Parent samples :
230b56b1d072725eff3a0e100515ba924377c9f0a79308bbfa3123269ee23d56
eca9be257354d26e49e1b03d1b8d42228cf66b5ee1b1236afad3c348da43c48b
30e473eded24bbe01ab4c65608793d380d5daa0a1cb3dfc9af5033ffee43c989
22a5161a4d95e737100936f93042049719d13a8437d751c22ad485ed51ee7c96
f2a5c2addef1471e98841eb5f2abbc5cd27c360f8850a69ef0a233d07744a9b8
f9bd74fdfb667569270dfaa42017873aed84149a633cf3fa97e8db1142bd5edd
SH256 hash:
1bbc4347112c5c630ebd66cd31d2d6ec432286124444c4864200cda259ee9ff2
MD5 hash:
e9dab0ffea1f82067450a42d40998770
SHA1 hash:
9cafaaef36b141ce311ad2e722cde7bac5ed6721
Link:
https://www.unpac.me/results/0e7fe916-bf35-4ab0-a89a-2c76c0bf9158/
SH256 hash:
7f7725237803ab6ffe591df556f4800f6822c2fe0ee32a5368aac95686c6fb58
MD5 hash:
1efd22e1b58de7da895b97fd5aa4fcf4
SHA1 hash:
301b121a989d5f305d3fa4e675493da9eb0f11a5
Link:
https://www.unpac.me/results/0e7fe916-bf35-4ab0-a89a-2c76c0bf9158/
SH256 hash:
6a671abf66304301602b4afd0902840bc3915455cffc58d8916eaa693abe33ec
MD5 hash:
681eca96e4e7b513317178dc7065ef39
SHA1 hash:
24af82015bc57d125f1ccb759840118b2283d1dc
Link:
https://www.unpac.me/results/0e7fe916-bf35-4ab0-a89a-2c76c0bf9158/
SH256 hash:
eca9be257354d26e49e1b03d1b8d42228cf66b5ee1b1236afad3c348da43c48b
MD5 hash:
66d2c4da32eb268aecaca139ef591adb
SHA1 hash:
aba682dc409e12bff3662b62acedda55cf2e8ef6
Link:
https://www.unpac.me/results/0e7fe916-bf35-4ab0-a89a-2c76c0bf9158/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.65
Link:
https://yomi.yoroi.company/submissions/eca9be257354d26e49e1b03d1b8d42228cf66b5ee1b1236afad3c348da43c48b

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
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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.

Web download

Formbook

Executable exe eca9be257354d26e49e1b03d1b8d42228cf66b5ee1b1236afad3c348da43c48b

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/1645278/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/192397/

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