MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 13690a4d7ae3acd542c99ab687383cc2d5b8b20346c2035a8f6381b03efbf7cb. 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: 8


Intelligence 8 IOCs YARA File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 13690a4d7ae3acd542c99ab687383cc2d5b8b20346c2035a8f6381b03efbf7cb
SHA3-384 hash: a1fc2995a50b16442f211003888af63a9a0fe06342c1893172fa70e1ba412028a6ea57474a0de87116f776d616b4409e
SHA1 hash: 7ba4f49edfb86f3ff66707699d8c27a66b4c0c43
MD5 hash: 8aa2aa4a74438a02e9b795bb5b7de5be
humanhash: texas-undress-alabama-ceiling
File name:New Additional Agreement - Commercial and Technical Proposal for Supply.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:594'944 bytes
First seen:2020-11-07 10:26:12 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'658 x AgentTesla, 19'469 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 12288:9SUIdjNMqHMtTsw+MOJNX+SV10G5RYc2UAw05viCrs9uZJ3L:HIBMV+MOG01j5ec2Fx5vUK3
Threatray 2'751 similar samples on MalwareBazaar
TLSH EBC4E05C9E806D22FC1FB1FCD1B5826C17334F1927B1D5DA5AA20EFA633AB940C1AE51
Reporter abuse_ch
Tags:exe FormBook


Avatar
abuse_ch
Malspam distributing unidentified malware:

HELO: norinco.cn
Sending IP: 37.49.225.167
From: ryao <ryao@norinco.cn>
Subject: Commercial and Technical Proposal for Supply
Attachment: Commercial and Technical Proposal for Supply.iso (contains "New Additional Agreement - Commercial and Technical Proposal for Supply.exe")

Intelligence

File Origin
# of uploads :
1
# of downloads :
103
Origin country :
n/a
Vendor Threat Intelligence
Detection(s):
SecuriteInfo.com.Trojan.PackedNET.453.11596.27942.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
Launching the default Windows debugger (dwwin.exe)
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/523808
Signature
Antivirus / Scanner detection for submitted 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)
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 virtualization through RDTSC time measurements
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 311000 Sample: New Additional Agreement - ... Startdate: 07/11/2020 Architecture: WINDOWS Score: 100 31 www.erraticer.com 2->31 33 erraticer.com 2->33 41 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->41 43 Malicious sample detected (through community Yara rule) 2->43 45 Antivirus / Scanner detection for submitted sample 2->45 47 3 other signatures 2->47 11 New Additional Agreement - Commercial and Technical Proposal for Supply.exe 1 2->11         started        signatures3 process4 file5 29 New Additional Agr... for Supply.exe.log, ASCII 11->29 dropped 57 Maps a DLL or memory area into another process 11->57 15 New Additional Agreement - Commercial and Technical Proposal for Supply.exe 11->15         started        signatures6 process7 signatures8 59 Modifies the context of a thread in another process (thread injection) 15->59 61 Maps a DLL or memory area into another process 15->61 63 Sample uses process hollowing technique 15->63 65 Queues an APC in another process (thread injection) 15->65 18 explorer.exe 15->18 injected process9 dnsIp10 35 sweetsasu.com 209.59.139.176, 49754, 80 LIQUIDWEBUS United States 18->35 37 www.free-outlet.com 217.31.49.20, 49756, 80 IGNUM-ASCzechRepublicCZ Czech Republic 18->37 39 20 other IPs or domains 18->39 49 System process connects to network (likely due to code injection or exploit) 18->49 22 explorer.exe 18->22         started        signatures11 process12 signatures13 51 Modifies the context of a thread in another process (thread injection) 22->51 53 Maps a DLL or memory area into another process 22->53 55 Tries to detect virtualization through RDTSC time measurements 22->55 25 cmd.exe 1 22->25         started        process14 process15 27 conhost.exe 25->27         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/13690a4d7ae3acd542c99ab687383cc2d5b8b20346c2035a8f6381b03efbf7cb/
Threat name:
ByteCode-MSIL.Ransomware.TeslaCrypt
Create hunting rule
Status:
Malicious
First seen:
2020-11-06 19:18:33 UTC
AV detection:
19 of 28 (67.86%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=cnuqutl24ownkqwjtk3ioob4ylk3rmqdi3bagwupmoa3apx367fq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
4173f8d221525a3414e606763b5a61b649ec421c145e7a9bc683d3e8ff5d5c96
Formbook
59be3e15ddff51758d23796f5528e93ff6c5164486bd0416ff25dc0ddc33f29c
Formbook
67b7e3da530df1ab1e868f9c0c1a5793f5b4a5b4fa69610e5e1d186a675c0c85
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7ac0888e83ebfc1401796d95250dcfae864d1db479bd741bd44847722a03555e
Formbook
8c0577ec4537880647e232dc1c3b0c722bb1efc0f8f4ea99729ed3607a1dace2
Formbook
a4aef07fffeb700f31df41a71994fbd7f2ab51c9b17f0dbf9900826528c30780
Formbook
ac320ccfb00631656e4ffddeb052255a8a52bbcdfd7559f943b62fd4aada1f42
Formbook
cc10bb6e07911b422b71a6f0ada6d7fed969c7c7bea26976b86f7ea70a43fa41
Formbook
ccc3f57b398f8d8c671c152004ec16ad6646480dd2edc32ff2da50b2c2251bb3
Formbook
dc647305de0ae67eff2e86276355bc83aa761b03693459df14d10ae6cd4a3102
Formbook
+ 2'741 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook rat spyware stealer trojan
Link:
https://tria.ge/reports/201107-gynj6v2dh6/
Behaviour
Gathers network information
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Suspicious use of UnmapMainImage
Suspicious use of SetThreadContext
Deletes itself
Formbook Payload
Formbook
Malware Config
C2 Extraction:
http://www.csgo-c4ses.com/bw82/
Unpacked files
SH256 hash:
ac455ad5b2708396783248dc6c9577b0d30484a216b0c3edba4c5c8bb458462f
MD5 hash:
21ea72c96ca68951d997fa91e13c1e29
SHA1 hash:
d38ab4e03953a83f5329e4b645606bb9c9b48518
Link:
https://www.unpac.me/results/81eaddd9-f677-475a-996f-64214ab0c01a/
SH256 hash:
b8bf31a1653fe5b35f132ab3b5870d2603ba2bf8c2adf5811cb546692b83fa8d
MD5 hash:
4e7e34d795ab07e21b9e7e08dd2cf1f7
SHA1 hash:
a1094d320a51133845623d7b3bf1c7c4bfbecdf2
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/81eaddd9-f677-475a-996f-64214ab0c01a/
Parent samples :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 hash:
13690a4d7ae3acd542c99ab687383cc2d5b8b20346c2035a8f6381b03efbf7cb
MD5 hash:
8aa2aa4a74438a02e9b795bb5b7de5be
SHA1 hash:
7ba4f49edfb86f3ff66707699d8c27a66b4c0c43
Link:
https://www.unpac.me/results/81eaddd9-f677-475a-996f-64214ab0c01a/
Please note that we are no longer able to provide a coverage score for Virus Total.

File information

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

Malspam

Formbook

iso 2e3a24c5603153e27f31dd6254a80d3a9a88495e1d1c202c07c92da9658e3aae

Formbook

Executable exe 13690a4d7ae3acd542c99ab687383cc2d5b8b20346c2035a8f6381b03efbf7cb

(this sample)

  
Dropped by
MD5 fb8f131344e63556b698b9de12f93fc3
  
Delivery method
Distributed via e-mail attachment
  
Dropped by
SHA256 2e3a24c5603153e27f31dd6254a80d3a9a88495e1d1c202c07c92da9658e3aae

Comments