MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 e812ca08bf2f1a1ea83facfaab349a8fa9d9fd88607d2b61a81423bb3f992175. 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: 10


Intelligence 10 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: e812ca08bf2f1a1ea83facfaab349a8fa9d9fd88607d2b61a81423bb3f992175
SHA3-384 hash: 87345723d5dc9bd3282d30395ca3ec8597d02e85efa2877ce574b9c102eeb8cb117a3d347b2abdde4055740d7acf9874
SHA1 hash: 977e551ff58cab2b14ac1f70a1392910499ccc02
MD5 hash: c28682488291906ff4835430c88e5b05
humanhash: paris-football-gee-summer
File name:0020-10.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:491'008 bytes
First seen:2020-10-20 08:22:49 UTC
Last seen:2020-10-25 21:42:29 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'740 x AgentTesla, 19'600 x Formbook, 12'241 x SnakeKeylogger)
ssdeep 12288:/9EJ9wt2L2C1Iz0i1h4L9f/HrG0oFB2h2wM4:/4YC1Iz0ik5HrG0oFB
TLSH D5A4C0B57C92586EC96E077550B981C1FAB616C73FA4CB0E716B430C0E11A2BFB6325B
Reporter abuse_ch
Tags:exe FormBook


Avatar
abuse_ch
Malspam distributing unidentified malware:

HELO: chezserver.gq
Sending IP: 104.168.219.143
From: Ampang Sdn bhd <no-reply@chezserver.gq>
Reply-To: Ampang Sdn bhd <mailreply01@mail.com>
Subject: Fwd: Bank in slip
Attachment: 0020-10.zip (contains "0020-10.exe")

Intelligence

File Origin
# of uploads :
2
# of downloads :
72
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/73331/
Detection(s):
SecuriteInfo.com.BehavesLike.Win32.Generic.gc.12735.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending a UDP request
Creating a file in the %temp% subdirectories
Creating a window
Creating a file
Creating a process from a recently created file
Launching a process
Launching cmd.exe command interpreter
Unauthorized injection to a recently created process
Unauthorized injection to a recently created process by context flags manipulation
Unauthorized injection to a system process
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/497313
Signature
.NET source code contains very large array initializations
Allocates memory in foreign processes
Antivirus / Scanner detection for submitted sample
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
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
Tries to detect virtualization through RDTSC time measurements
Writes to foreign memory regions
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 300849 Sample: 0020-10.exe Startdate: 20/10/2020 Architecture: WINDOWS Score: 100 34 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->34 36 Malicious sample detected (through community Yara rule) 2->36 38 Antivirus / Scanner detection for submitted sample 2->38 40 5 other signatures 2->40 10 0020-10.exe 8 2->10         started        process3 file4 26 C:\Users\user\AppData\...\AddInProcess32.exe, PE32 10->26 dropped 28 C:\Users\user\AppData\...\0020-10.exe.log, ASCII 10->28 dropped 30 C:\Users\user\AppData\Local\Temp\...\Xxl.dll, PE32 10->30 dropped 32 C:\Users\user\AppData\...\AgileDotNetRT.dll, PE32 10->32 dropped 48 Writes to foreign memory regions 10->48 50 Allocates memory in foreign processes 10->50 52 Tries to detect virtualization through RDTSC time measurements 10->52 54 Injects a PE file into a foreign processes 10->54 14 AddInProcess32.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 2 other signatures 14->62 17 explorer.exe 14->17 injected process8 process9 19 systray.exe 17->19         started        signatures10 42 Modifies the context of a thread in another process (thread injection) 19->42 44 Maps a DLL or memory area into another process 19->44 46 Tries to detect virtualization through RDTSC time measurements 19->46 22 cmd.exe 1 19->22         started        process11 process12 24 conhost.exe 22->24         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/e812ca08bf2f1a1ea83facfaab349a8fa9d9fd88607d2b61a81423bb3f992175/
Threat name:
ByteCode-MSIL.Trojan.Injuke
Create hunting rule
Status:
Malicious
First seen:
2020-10-20 04:14:37 UTC
AV detection:
25 of 28 (89.29%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=5ajmucf7f4nb5kb7vt5kwne2r6u5t7mimb6swynicqr3wp4zef2q._file
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
rat trojan spyware stealer family:formbook
Link:
https://tria.ge/reports/201020-vbt29a9q8n/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Loads dropped DLL
Executes dropped EXE
Formbook Payload
Formbook
Malware Config
C2 Extraction:
http://www.crazyenergyguy.com/dmr/
Unpacked files
SH256 hash:
e812ca08bf2f1a1ea83facfaab349a8fa9d9fd88607d2b61a81423bb3f992175
MD5 hash:
c28682488291906ff4835430c88e5b05
SHA1 hash:
977e551ff58cab2b14ac1f70a1392910499ccc02
Link:
https://www.unpac.me/results/df14c18f-e2db-49b7-8ccc-3bb9371d4f92/
SH256 hash:
9bec550624b5ebe019ea8952f9df0694a62a0fe02d6da901d0778bfbeb0ac219
MD5 hash:
292808395f593509fb3169d5dfba0749
SHA1 hash:
b3778f6c62472df1b896ff92e823409cdf87e225
Link:
https://www.unpac.me/results/df14c18f-e2db-49b7-8ccc-3bb9371d4f92/
SH256 hash:
19d9922060be89a70b76e5c0056e751f1baa5d41819235c92cf4f5d7668e1267
MD5 hash:
811864a0b06c529af894a7fec6ddbf47
SHA1 hash:
d35b82933eb06a6ec60e8cbbdb65eb6cdcaeb6d2
Link:
https://www.unpac.me/results/df14c18f-e2db-49b7-8ccc-3bb9371d4f92/
Parent samples :
afa2f55e149097f9b250142bbfd94d9d56d10649c96adb079fdb0dfdac7c6660
69e2ae11e1b5cbe120bf02301191a1cf05e87fc09b09d63bd782abbf3615d05d
0b778873c94f6bc89a40294c0e85a38ab82509260cd2a2e8b73d00c5c90e8757
7ddfa6f44a60f4b894321f6977f8121cfb371c3c61ac872c58ba61fd5ee13deb
SH256 hash:
f8bee4108a324df32ad5a2ebafa6b7f411402a21e2598cf9db66486970f80fdd
MD5 hash:
a92da98ff6f5ae608503d074617bcc2a
SHA1 hash:
d3eafcccca011bb3a7a5ae52dd9704ceafcde472
Link:
https://www.unpac.me/results/df14c18f-e2db-49b7-8ccc-3bb9371d4f92/
SH256 hash:
45cebff66bfc33e7c397fdc3a540791717ad2021d21549f4daa6eadd40ad4015
MD5 hash:
044de68d712fa2c2283a057eb20e9622
SHA1 hash:
853c7b7553539e0cce3c337b221d0726a7879b5d
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/df14c18f-e2db-49b7-8ccc-3bb9371d4f92/
Parent samples :
a6fd278a82dad870444a8d93e3c05accdfaef779460c2f3777d9ef2441620a41
4323dbb489f82a5a4906fbc6e0dc37a6589dc7b073f2fa0a569b7d3409314e15
0982a348bad7e99222ac6ec6c6dc2c113eb8adff8785bd1f371c5bc90b0025b3
73c740cf8efc312c3fed42aceee4f4513b8ce620aaf31793676f8de2810fdadb
b791ce91936d65f90d9ca761c1999ea8330b66d3c3aede92564395d4778b5955
273e14710bfe15975737d9e213b6007a29cc795c993b6b121c745581ec1c4b96
540254a20d7d4aec2508a9db7e1fdb484ebc5bcec6ff72c919b17b5f0dbabdd7
a4d4e093896e53df94a4ffb14632be70329334ac705925a975fa499ac7ee0a89
e812ca08bf2f1a1ea83facfaab349a8fa9d9fd88607d2b61a81423bb3f992175
1c8686106ff3eebb3b99082e117bf8b3bcf5a54b733c2a5eb8ede2b89ee7c4fb
3864dd603fd4616753b80ec6146bccaac77ee9ec7590d088d121dc15db1dc98a
83a00cced5b83593db2ff0ce7f23937ba5b836b28969c1a0d481a6e9fbea5f53
f24849d70670b5448e96f02fe8bc12328bee2922be60f70ec8121531778f0d05
1e510326528933cca881fd142e4840c5256a25384310c77ab7dc9f38e390430c
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/e812ca08bf2f1a1ea83facfaab349a8fa9d9fd88607d2b61a81423bb3f992175

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:Formbook
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect Formbook in memory
Reference:internal research
Rule name:win_formbook_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:autogenerated rule brought to you by yara-signator
Rule name:win_formbook_g0
Create hunting rule
Author:Slavo Greminger, SWITCH-CERT

File information

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

Malspam

Formbook

zip 3ec253aa662f48bea94553f8a04fe6e8f9919f4fe9329bd8baca5de80d7557d9

Formbook

Executable exe e812ca08bf2f1a1ea83facfaab349a8fa9d9fd88607d2b61a81423bb3f992175

(this sample)

  
Dropped by
MD5 a586ea2b8b77fcd9fd711978125a22a6
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/73331/
  
Dropped by
SHA256 3ec253aa662f48bea94553f8a04fe6e8f9919f4fe9329bd8baca5de80d7557d9

Comments