MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 ac67dec533d5b06a41145ba39ea674e30ed03bd09dabee9e0417bef18943edd7. 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: 13


Intelligence 13 IOCs YARA 3 File information Comments
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SHA256 hash: ac67dec533d5b06a41145ba39ea674e30ed03bd09dabee9e0417bef18943edd7
SHA3-384 hash: fa3cba2f179474939f75aeb6b2daf865ea71581146febc719f151550ea0d1f66a09443c0260da2dd9ffc1c19f3f13c90
SHA1 hash: fc38af3749e0d33b38d2c1aa317c39918c494f76
MD5 hash: 3235ee16bb12ac83bd145a7d87b09618
humanhash: vermont-alanine-kitten-paris
File name:PO 4100066995.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:766'976 bytes
First seen:2021-08-28 16:20:41 UTC
Last seen:2021-08-28 17:18:12 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:pbeFZlNhJdLEHgjM+fK8I4nVfcphY/+A:+Z5JdLzu4VfcQ
Threatray 8'687 similar samples on MalwareBazaar
TLSH T1FAF4C97E19BDA12BD165C6FA8BE38427F0108F6E3110692466D27716433297AF4F336E
dhash icon 732f5b6d6d677361 (11 x Formbook)
Reporter GovCERT_CH
Tags:exe FormBook xloader

Intelligence

File Origin
# of uploads :
2
# of downloads :
304
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
PO 4100066995.exe
Verdict:
Malicious activity
Analysis date:
2021-08-28 16:21:28 UTC
Tags:
trojan formbook stealer
Link:
https://app.any.run/tasks/be6d24d5-38ba-45d8-9929-08dda2b01e80

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/183067/
Detection(s):
SecuriteInfo.com.Trojan.Packed2.43380.24127.7763.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
DNS request
Sending a UDP request
Unauthorized injection to a recently created process
Creating a file
Launching a process
Launching cmd.exe command interpreter
Unauthorized injection to a system process
Malware family:
Formbook
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/15e56684-4cc9-428e-b777-aee7eb75fb58
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/840779
Signature
.NET source code contains potential unpacker
.NET source code contains very large strings
Injects a PE file into a foreign processes
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)
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 (e.g. based on Emerging Threat rules)
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 dnsIp2 2 Behavior Graph ID: 473210 Sample: PO 4100066995.exe Startdate: 28/08/2021 Architecture: WINDOWS Score: 100 35 www.successfullsolutionworks.com 2->35 43 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->43 45 Malicious sample detected (through community Yara rule) 2->45 47 Multi AV Scanner detection for submitted file 2->47 49 6 other signatures 2->49 11 PO 4100066995.exe 3 2->11         started        signatures3 process4 file5 33 C:\Users\user\...\PO 4100066995.exe.log, ASCII 11->33 dropped 59 Injects a PE file into a foreign processes 11->59 15 PO 4100066995.exe 11->15         started        18 PO 4100066995.exe 11->18         started        20 PO 4100066995.exe 11->20         started        signatures6 process7 signatures8 61 Modifies the context of a thread in another process (thread injection) 15->61 63 Maps a DLL or memory area into another process 15->63 65 Sample uses process hollowing technique 15->65 67 Queues an APC in another process (thread injection) 15->67 22 explorer.exe 15->22 injected process9 dnsIp10 37 www.vaca.travel 91.195.240.94, 49734, 80 SEDO-ASDE Germany 22->37 39 www.adjud.net 77.111.240.231, 49732, 80 ONECOMDK Denmark 22->39 41 10 other IPs or domains 22->41 51 System process connects to network (likely due to code injection or exploit) 22->51 26 help.exe 22->26         started        signatures11 process12 signatures13 53 Modifies the context of a thread in another process (thread injection) 26->53 55 Maps a DLL or memory area into another process 26->55 57 Tries to detect virtualization through RDTSC time measurements 26->57 29 cmd.exe 1 26->29         started        process14 process15 31 conhost.exe 29->31         started       
Detection:
xloader
Create hunting rule
Link:
https://mwdb.cert.pl/sample/ac67dec533d5b06a41145ba39ea674e30ed03bd09dabee9e0417bef18943edd7/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2021-08-28 09:43:09 UTC
AV detection:
14 of 26 (53.85%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=vrt55rjt2wyguqiulorz5jtu4mhnao6qtwv65hqec67pdckd5xlq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
4d7e4cedde9a2c613ef907b1fd8c9790e349ae738350d90cfb6c129ef689c159
Formbook
84fc1635313dd47492ef1841d82c4cf286b38ba772240e587ee0f7ebdeae1986
Formbook
898e39ebe6bdfed0d216a54673ae93fe5349b1addd89e2891b969ff3745536f3
Formbook
b7fc471e982d86cd36e4704bb9e5ee9496c06de4d1a2c2c3c3dad7862a3a5392
Formbook
db33772c98a3b201320bf4b88830aa7ec9e2c85797cf4460ab67f8d4d93964f4
Formbook
dcecd1b58a58ae82c43536488a6e46a5535b71d49d21c909e2488d0f102388a7
Formbook
+ 8'677 additional samples on MalwareBazaar
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:xloader campaign:bp39 loader rat suricata
Link:
https://tria.ge/reports/210828-wr5jyvb1fj/
Behaviour
Gathers network information
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of UnmapMainImage
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Deletes itself
Xloader Payload
Xloader
suricata: ET MALWARE FormBook CnC Checkin (GET)
Malware Config
C2 Extraction:
http://www.piadineriae45.com/bp39/
Unpacked files
SH256 hash:
43e17cf28e166e617e193d2374f0b186363c494236ff53ea598d1adad91a56c7
MD5 hash:
802a63480adc220977c8b7260d143128
SHA1 hash:
e3c58087d36e834cc66f65498184b5f94df1d112
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/5848b817-f1c9-43a8-b428-abd9b00a1f53/
Parent samples :
84fc1635313dd47492ef1841d82c4cf286b38ba772240e587ee0f7ebdeae1986
dcecd1b58a58ae82c43536488a6e46a5535b71d49d21c909e2488d0f102388a7
b7fc471e982d86cd36e4704bb9e5ee9496c06de4d1a2c2c3c3dad7862a3a5392
73c9e89d51022a4059395c2849313595439ca715a36d7383e9708bc6421aa628
4d7e4cedde9a2c613ef907b1fd8c9790e349ae738350d90cfb6c129ef689c159
f7f840a7d6ed87875a6376dedef3386e491cfafd01011f27f21b0b2b73a0d6ba
898e39ebe6bdfed0d216a54673ae93fe5349b1addd89e2891b969ff3745536f3
4e86e4c898bee9c454d8bdef33a2ece96c8da7c2605ec31560ed5006e1b9d83e
db33772c98a3b201320bf4b88830aa7ec9e2c85797cf4460ab67f8d4d93964f4
ac67dec533d5b06a41145ba39ea674e30ed03bd09dabee9e0417bef18943edd7
80df303ae126ce28b9d4161060f164c1636c4b63dc02f7d2befdf6f45737ff12
ecbd46c265b67d75964db9233ccd1f26710d56ab7f649845e44f59d55db4251b
d634969bc2a0130a49885595394a5543e8a21458db2474dc909431b3ca9d0df4
SH256 hash:
c0ee1071e444f415f8b62856a0896f3b22e563f1bb4f03d14142583efe49a565
MD5 hash:
29db2e114b88ae1f6a00c9aa71690043
SHA1 hash:
ec82db71443556a5b320357b0b8b09e70ec1db9c
Link:
https://www.unpac.me/results/5848b817-f1c9-43a8-b428-abd9b00a1f53/
SH256 hash:
f5a4614efe9d9c0bbef2cdff1ce94e70f16a5f3995c3424fedd8962d42907ded
MD5 hash:
55baa200507c59dfbcac71210c4d36dd
SHA1 hash:
ca5f6a5f9222818b914e16c67cb7d3d08c49af91
Link:
https://www.unpac.me/results/5848b817-f1c9-43a8-b428-abd9b00a1f53/
SH256 hash:
ac67dec533d5b06a41145ba39ea674e30ed03bd09dabee9e0417bef18943edd7
MD5 hash:
3235ee16bb12ac83bd145a7d87b09618
SHA1 hash:
fc38af3749e0d33b38d2c1aa317c39918c494f76
Link:
https://www.unpac.me/results/5848b817-f1c9-43a8-b428-abd9b00a1f53/
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/ac67dec533d5b06a41145ba39ea674e30ed03bd09dabee9e0417bef18943edd7

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: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 ac67dec533d5b06a41145ba39ea674e30ed03bd09dabee9e0417bef18943edd7

(this sample)

  
Dropped by
xloader
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/183067/

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