MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 83a00cced5b83593db2ff0ce7f23937ba5b836b28969c1a0d481a6e9fbea5f53. 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 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 83a00cced5b83593db2ff0ce7f23937ba5b836b28969c1a0d481a6e9fbea5f53
SHA3-384 hash: 63cf3218c63ca603f63678ee09f0aa2435e46f74cd6864022ef93965d8d840f983c1df78ffc19bd197f9fb9a555fb574
SHA1 hash: 1f2725827018e55f163430fb8fdbdd1bda20decb
MD5 hash: 9a0b8c8933909401f03fdaa1cf15da67
humanhash: colorado-low-blue-april
File name:001-22.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:470'016 bytes
First seen:2020-10-23 06:42:33 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'661 x AgentTesla, 19'474 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 6144:+t5LGM4cDvQ/ts9gCGBo2XN1gXCZjtZSS/Lu/gV0JHwNdZQxBnNXh7T9DP:gwM4WQ/c2VBS/g66mNXh7T9
Threatray 2'949 similar samples on MalwareBazaar
TLSH 0EA4C0B27D92596ECAAB0775516980C0FABA16C73FA0CB0D715F430C0E14A2BFB5725B
Reporter abuse_ch
Tags:exe FormBook


Avatar
abuse_ch
Malspam distributing unidentified malware:

HELO: newserver1.nexusmediaworks.com
Sending IP: 43.252.214.38
From: sharon@merryprice.com
Subject: BANCO EN COPIA
Attachment: 001-22.zip (contains "001-22.exe")

Intelligence

File Origin
# of uploads :
1
# of downloads :
94
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/74925/
Detection(s):
SecuriteInfo.com.BehavesLike.Win32.Generic.gc.16908.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file in the %temp% subdirectories
Sending a UDP request
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/507791
Signature
.NET source code contains potential unpacker
.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
System process connects to network (likely due to code injection or exploit)
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: 303018 Sample: 001-22.exe Startdate: 23/10/2020 Architecture: WINDOWS Score: 100 38 Malicious sample detected (through community Yara rule) 2->38 40 Antivirus / Scanner detection for submitted sample 2->40 42 Multi AV Scanner detection for submitted file 2->42 44 5 other signatures 2->44 10 001-22.exe 8 2->10         started        process3 file4 28 C:\Users\user\AppData\...\AddInProcess32.exe, PE32 10->28 dropped 30 C:\Users\user\AppData\...\001-22.exe.log, ASCII 10->30 dropped 32 C:\Users\user\AppData\...\AgileDotNetRT.dll, PE32 10->32 dropped 34 C:\Users\user\AppData\...\AgileDotNetRT.dll, PE32 10->34 dropped 54 Writes to foreign memory regions 10->54 56 Allocates memory in foreign processes 10->56 58 Tries to detect virtualization through RDTSC time measurements 10->58 60 Injects a PE file into a foreign processes 10->60 14 AddInProcess32.exe 10->14         started        signatures5 process6 signatures7 62 Modifies the context of a thread in another process (thread injection) 14->62 64 Maps a DLL or memory area into another process 14->64 66 Sample uses process hollowing technique 14->66 68 2 other signatures 14->68 17 explorer.exe 14->17 injected process8 dnsIp9 36 www.universitynude.com 213.247.47.190, 49734, 80 WEBAIR-INTERNETUS Netherlands 17->36 46 System process connects to network (likely due to code injection or exploit) 17->46 21 WWAHost.exe 17->21         started        signatures10 process11 signatures12 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/83a00cced5b83593db2ff0ce7f23937ba5b836b28969c1a0d481a6e9fbea5f53/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2020-10-22 16:11:42 UTC
AV detection:
22 of 27 (81.48%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=qoqaztwvxa2zhwzp6dhh6i4tpos3qnvsrfu4diguqgtot67kl5jq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
0982a348bad7e99222ac6ec6c6dc2c113eb8adff8785bd1f371c5bc90b0025b3
Formbook
0f97d2c99964370b019145742e1d9322e9248fea3e149f00c10ca99807bcafa4
Formbook
273e14710bfe15975737d9e213b6007a29cc795c993b6b121c745581ec1c4b96
Formbook
4e712f5df51bc5970b962b170cfde7a6cd20622ac67164a6f2101655a8a7d7f3
Formbook
a4d4e093896e53df94a4ffb14632be70329334ac705925a975fa499ac7ee0a89
Formbook
a6fd278a82dad870444a8d93e3c05accdfaef779460c2f3777d9ef2441620a41
Formbook
d796f6805d3b2379a57954f070415cabded6cf360544f1ba36acb75d558449db
Formbook
dbdd8dc5bf8c5f81b9cbead4224bade6cd697f6f00cbab59bf084f6e39578a8d
Formbook
e30d5f240c8600e531832e61f6abddde973ba724b55e8c8bb455a151607b40a3
Formbook
e812ca08bf2f1a1ea83facfaab349a8fa9d9fd88607d2b61a81423bb3f992175
Formbook
+ 2'939 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
rat trojan spyware stealer family:formbook
Link:
https://tria.ge/reports/201023-ny3nfdtn2n/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Gathers network information
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:
83a00cced5b83593db2ff0ce7f23937ba5b836b28969c1a0d481a6e9fbea5f53
MD5 hash:
9a0b8c8933909401f03fdaa1cf15da67
SHA1 hash:
1f2725827018e55f163430fb8fdbdd1bda20decb
Link:
https://www.unpac.me/results/f87785ce-2606-433d-a2e2-b9c572fb9cc5/
SH256 hash:
30140c3bf5874d7d184b15513016f9de1524ae95a5efe9a1cb15bad6d6936d64
MD5 hash:
03847d82611bc6461cbb99ca768828f1
SHA1 hash:
39859a3fd3326520dfd1ed10456bb227933a8871
Link:
https://www.unpac.me/results/f87785ce-2606-433d-a2e2-b9c572fb9cc5/
SH256 hash:
0fc854e82e40c12de91a8618ce9bc7b57c8863977ad16de5027791805cce4b7f
MD5 hash:
59a00b6fcaea45a3b59d98337f47f06a
SHA1 hash:
427c147a0b90413c92e7029e5009beacf256bf6b
Link:
https://www.unpac.me/results/f87785ce-2606-433d-a2e2-b9c572fb9cc5/
SH256 hash:
19d9922060be89a70b76e5c0056e751f1baa5d41819235c92cf4f5d7668e1267
MD5 hash:
811864a0b06c529af894a7fec6ddbf47
SHA1 hash:
d35b82933eb06a6ec60e8cbbdb65eb6cdcaeb6d2
Link:
https://www.unpac.me/results/f87785ce-2606-433d-a2e2-b9c572fb9cc5/
Parent samples :
afa2f55e149097f9b250142bbfd94d9d56d10649c96adb079fdb0dfdac7c6660
69e2ae11e1b5cbe120bf02301191a1cf05e87fc09b09d63bd782abbf3615d05d
0b778873c94f6bc89a40294c0e85a38ab82509260cd2a2e8b73d00c5c90e8757
7ddfa6f44a60f4b894321f6977f8121cfb371c3c61ac872c58ba61fd5ee13deb
SH256 hash:
781994d6612b5b3584dcfea57b5d43aa9c031be01f07b806b0327bf21ff1af20
MD5 hash:
283269313189552af311946622d1a1a9
SHA1 hash:
2106f0e40ab09fd5925f149d637cd2cfe3d6e58d
Link:
https://www.unpac.me/results/f87785ce-2606-433d-a2e2-b9c572fb9cc5/
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/f87785ce-2606-433d-a2e2-b9c572fb9cc5/
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.

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 cffa30dbc9a0bb80987e430619357cca1e32561dce09fa125342af51003ee58d

Formbook

Executable exe 83a00cced5b83593db2ff0ce7f23937ba5b836b28969c1a0d481a6e9fbea5f53

(this sample)

  
Dropped by
MD5 f8ebca745b4020db4d6a6e4c8fcd57dc
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/74925/
  
Dropped by
SHA256 cffa30dbc9a0bb80987e430619357cca1e32561dce09fa125342af51003ee58d

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