MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 ae73e8799690e6e7efe2222fe8a471af2c7f7f0f82dff259434626eac35a2721. 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: 9


Intelligence 9 IOCs YARA File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: ae73e8799690e6e7efe2222fe8a471af2c7f7f0f82dff259434626eac35a2721
SHA3-384 hash: c6e000d42bd73dfc7e9f865e0a58c63185afffe00bf22a1b6d709c93c9ab125ca579b19b9ddb88db19ecde0aeed91886
SHA1 hash: 37a8d89122bd0555e3a83e4940ff1871892f55f6
MD5 hash: 5a3dfc0ef78aab90422df535e97cbe9c
humanhash: football-montana-stream-green
File name:13012021.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:1'085'440 bytes
First seen:2021-01-13 07:40:29 UTC
Last seen:2021-01-13 09:38:45 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'664 x AgentTesla, 19'478 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 12288:qVYNpCE9znWcLBEthx4+I00z6Q58umB9G0gQcMoj9:qKXznWc1EthBB0eQ8u03gQch
TLSH FC353B10ABD81700F3BD27BC697040655BF5FB55E6B8E31CF86C50AA1FA2E5084BE762
Reporter abuse_ch
Tags:exe FormBook geo KOR


Avatar
abuse_ch
Malspam distributing Formbook:

HELO: mail-smail-vm44.hanmail.net
Sending IP: 203.133.180.232
From: 감사합니다. <ripton@hanmail.net>
Subject: 견적을 긴급으로 부탁드려요.
Attachment: A-SEONG CO.,LTD.pdf.cab (contains "13012021.exe")

Intelligence

File Origin
# of uploads :
2
# of downloads :
165
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
13012021.exe
Verdict:
Suspicious activity
Analysis date:
2021-01-13 05:42:24 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/27e23a01-7b55-459a-acba-07628a4a21d5

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/111744/
Detection(s):
SecuriteInfo.com.Artemis5A3DFC0EF78A.8677.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
Unauthorized injection to a recently created process
Creating a file
Launching a process
Launching cmd.exe command interpreter
Setting browser functions hooks
Unauthorized injection to a system process
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.
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/579724
Signature
.NET source code contains potential unpacker
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)
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
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 AntiVM_3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 338906 Sample: 13012021.exe Startdate: 13/01/2021 Architecture: WINDOWS Score: 100 31 www.iotajinn.com 2->31 39 Found malware configuration 2->39 41 Malicious sample detected (through community Yara rule) 2->41 43 Yara detected AntiVM_3 2->43 45 5 other signatures 2->45 11 13012021.exe 3 2->11         started        signatures3 process4 file5 29 C:\Users\user\AppData\...\13012021.exe.log, ASCII 11->29 dropped 55 Tries to detect virtualization through RDTSC time measurements 11->55 15 13012021.exe 11->15         started        signatures6 process7 signatures8 57 Modifies the context of a thread in another process (thread injection) 15->57 59 Maps a DLL or memory area into another process 15->59 61 Sample uses process hollowing technique 15->61 63 Queues an APC in another process (thread injection) 15->63 18 explorer.exe 15->18 injected process9 dnsIp10 33 anotherheadache.com 46.23.71.2, 49741, 80 UK2NET-ASGB United Kingdom 18->33 35 whatilikeabouttoday.com 34.102.136.180, 49744, 49745, 80 GOOGLEUS United States 18->35 37 6 other IPs or domains 18->37 47 System process connects to network (likely due to code injection or exploit) 18->47 22 raserver.exe 18->22         started        signatures11 process12 signatures13 49 Modifies the context of a thread in another process (thread injection) 22->49 51 Maps a DLL or memory area into another process 22->51 53 Tries to detect virtualization through RDTSC time measurements 22->53 25 cmd.exe 1 22->25         started        process14 process15 27 conhost.exe 25->27         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/ae73e8799690e6e7efe2222fe8a471af2c7f7f0f82dff259434626eac35a2721/
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=vzz6q6mwsdtop37ceix6rjdrv4wh67ypqlp7ewkdiytovq22e4qq._file
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook rat spyware stealer trojan
Link:
https://tria.ge/reports/210113-hyn52828dn/
Behaviour
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.timoniks.com/rbg/
Unpacked files
SH256 hash:
ae73e8799690e6e7efe2222fe8a471af2c7f7f0f82dff259434626eac35a2721
MD5 hash:
5a3dfc0ef78aab90422df535e97cbe9c
SHA1 hash:
37a8d89122bd0555e3a83e4940ff1871892f55f6
Link:
https://www.unpac.me/results/a937e060-066f-4017-a177-02001311b360/
SH256 hash:
296620e9308a1069ca98d27c426f25f5c1f87d9240bb371c657571034b0261b5
MD5 hash:
4cf24d41a7882216740280e3294cb853
SHA1 hash:
6bcb31d3dc0a7d71da1067a628168664202769a4
Link:
https://www.unpac.me/results/a937e060-066f-4017-a177-02001311b360/
SH256 hash:
b7af1abde71a7fc7b7aee1bd359cd3779b985541dd69cc8acbb3f051ab6903a2
MD5 hash:
d2444c72914b42b2d520c152f37608ef
SHA1 hash:
7bb0044584dfd91973ecdd9550cdbb9b03c8ffbd
Link:
https://www.unpac.me/results/a937e060-066f-4017-a177-02001311b360/
SH256 hash:
c347153fdef49fe1c7937bfe439e51c771923677a4b7a5578bd8b88a5e2fc9b2
MD5 hash:
92e611e075c477df421bb505f311dce5
SHA1 hash:
28a969df0932dec813ac1f61184d1e5d98d2014e
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/a937e060-066f-4017-a177-02001311b360/
Parent samples :
fa1e4180024c1bb17610a4c0d6d3fd40b863c34016b131f1ce08fbcc140ce257
ae73e8799690e6e7efe2222fe8a471af2c7f7f0f82dff259434626eac35a2721
931f6aeff35cea88af521bc2cdca24164113c47ab3153e148e33d5bce66313f4
2449800b54909498a549817cc5bd9b8fc610a0d7ef6fd2bfda0d370783da8d32
9a9ac9671ba6e6954776498cf28264d6c1742bc52fb070d7736d83a3582a14c8
e10a18344876f44eea40708f80322df6ec17eea4fec0b7de74c97aab23421600
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Kryptik
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/ae73e8799690e6e7efe2222fe8a471af2c7f7f0f82dff259434626eac35a2721

File information

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

Malspam

Formbook

cab 20e68f25ef07e539817738d2ed2afb8f02d04795af999d5e2c9d40fabcdf04a7

Formbook

Executable exe ae73e8799690e6e7efe2222fe8a471af2c7f7f0f82dff259434626eac35a2721

(this sample)

  
Dropped by
MD5 dbc4a2d454c41f46b6020c353f0b3f1b
  
Delivery method
Distributed via e-mail attachment
  
Dropped by
SHA256 20e68f25ef07e539817738d2ed2afb8f02d04795af999d5e2c9d40fabcdf04a7
Cape
Cape
https://www.capesandbox.com/analysis/111744/

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