MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 66b02d69d4eff510190fb38504be6dcf9f94d28f14b0569c7d1cd36bfb78983d. 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: 11


Intelligence 11 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 66b02d69d4eff510190fb38504be6dcf9f94d28f14b0569c7d1cd36bfb78983d
SHA3-384 hash: 0d71eedd4d9f447576c7f1bf99271e3a8759edc9b90f9e12ad8b0e309f32d6bac8838bf3b82ec9c8a1bdc11765f29d0e
SHA1 hash: a973eec6e0ead9558a5fba6193468a70bcdb1108
MD5 hash: d59f82dcd426fe19fa03336cbe13a6fe
humanhash: four-east-east-zulu
File name:INVOICE E-4137 REV.1 AND E-4136 REV.1.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:741'376 bytes
First seen:2021-06-21 05:02:54 UTC
Last seen:2021-06-21 05:52:16 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:qGYXQWFHmssO2eB56c3fBKuXguhioKIlkzM/XHPSo2ZnOElHhU:qjTHuU6cPBKuQuYoKI2zwXHPJ2
Threatray 6'085 similar samples on MalwareBazaar
TLSH 22F4BF3039AEA10DF577AF741AE436E29A6FBE637707D95C14D4234A8B23842CF41939
Reporter GovCERT_CH
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
94
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
INVOICE E-4137 REV.1 AND E-4136 REV.1.exe
Verdict:
Malicious activity
Analysis date:
2021-06-21 05:04:40 UTC
Tags:
trojan formbook stealer covid19
Link:
https://app.any.run/tasks/ec8de5e7-89b4-43c6-8a91-4dc579051655

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Trojan.YakbeexMSIL.ZZ4.27527.31241.UNOFFICIAL
Create hunting rule

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.
Malware family:
Formbook
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/9e0b10d8-7538-4bf9-a6d4-76edacab6694
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/805054
Signature
.NET source code contains potential unpacker
C2 URLs / IPs found in malware configuration
Found malware configuration
Initial sample is a PE file and has a suspicious name
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: 437465 Sample: INVOICE E-4137 REV.1 AND E-... Startdate: 21/06/2021 Architecture: WINDOWS Score: 100 27 www.taspate.com 2->27 29 HDRedirect-LB7-5a03e1c2772e1c9c.elb.us-east-1.amazonaws.com 2->29 47 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->47 49 Found malware configuration 2->49 51 Malicious sample detected (through community Yara rule) 2->51 53 8 other signatures 2->53 9 explorer.exe 2->9         started        13 INVOICE E-4137 REV.1 AND E-4136 REV.1.exe 3 2->13         started        signatures3 process4 dnsIp5 31 www.notimpersonating.com 212.32.237.92, 49744, 80 LEASEWEB-NL-AMS-01NetherlandsNL Netherlands 9->31 33 www.renetyson.com 172.252.104.51, 49753, 80 EGIHOSTINGUS United States 9->33 35 11 other IPs or domains 9->35 55 System process connects to network (likely due to code injection or exploit) 9->55 16 cmmon32.exe 9->16         started        25 INVOICE E-4137 REV...-4136 REV.1.exe.log, ASCII 13->25 dropped 19 INVOICE E-4137 REV.1 AND E-4136 REV.1.exe 13->19         started        file6 signatures7 process8 signatures9 37 Tries to detect virtualization through RDTSC time measurements 16->37 21 cmd.exe 1 16->21         started        39 Modifies the context of a thread in another process (thread injection) 19->39 41 Maps a DLL or memory area into another process 19->41 43 Sample uses process hollowing technique 19->43 45 Queues an APC in another process (thread injection) 19->45 process10 process11 23 conhost.exe 21->23         started       
Detection:
xloader
Create hunting rule
Link:
https://mwdb.cert.pl/sample/66b02d69d4eff510190fb38504be6dcf9f94d28f14b0569c7d1cd36bfb78983d/
Threat name:
ByteCode-MSIL.Trojan.Woreflint
Create hunting rule
Status:
Malicious
First seen:
2021-06-21 04:02:17 UTC
AV detection:
14 of 43 (32.56%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=m2yc22ou572ragipwocqjptnz6pzjuupcsyfnhd5dtjwx63yta6q._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
196b6069472a478c158cae56200e7d627d7e6b32ab1f361a36b75234bbf998de
Formbook
298b7204317915aa463fecd43ee99abbb9020e993dc0ffdcc5e382d0f590a7b8
Formbook
5397f0168be76c7e5efee936d341eb359b9015af5e77631129dc0664105e9259
Formbook
5b7770f02c562dffdbe0cd638e288adba8f340c7231ef30fa2860b7f4b9dfa80
Formbook
64c5f02d627f750a5b60a196ddd53fc03f6bf632e7643cf996effaed8981e05d
Formbook
780555ffbda34b2fe63790a38a7c3e4df0b437d17c22fe7c886fcd2ee72684d0
Formbook
9ce9e41c146be2b9aecbed6e14d9c4fa9d69d6b51038ba27782d08a432c8c95d
Formbook
c494dceddfa1c8c6944a93f902c641ab5f99352ba48b81849e576f7da353314c
Formbook
c58abe9cc2eda9f80841417a5e8dd7c75416cf0183a6fda6b616a2c312450ab5
Formbook
c9afe6904407e9b60e73edf93efbd932b6725f0f4f33306117ffc9854c21cae2
Formbook
+ 6'075 additional samples on MalwareBazaar
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:xloader loader rat
Link:
https://tria.ge/reports/210621-kw2yw28lyj/
Behaviour
Enumerates system info in registry
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 WriteProcessMemory
Suspicious use of SetThreadContext
Deletes itself
Xloader Payload
Xloader
Malware Config
C2 Extraction:
http://www.wwwgraciescottage.com/u9pi/
Unpacked files
SH256 hash:
66f738d9107d8d19daa99d684e5473285116537e0bb3f8089ca32b269eee22a2
MD5 hash:
046399038b945b76e72ba6bb1ccee8a1
SHA1 hash:
3f6ca561723b3d79f4373c60e6c5a17eccbbc947
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/6920fd1b-8127-4943-8a2f-4009c81a23b7/
Parent samples :
66b02d69d4eff510190fb38504be6dcf9f94d28f14b0569c7d1cd36bfb78983d
a29d5d9dae6f9937c1f0dcf733031f3478d74f326c1913727eb9e65e53c82ab9
e47843b7ef3c9825c787ff7fae69cfbd4759a21e81da4e800746af5b7937c45b
8a403d5866d98e6da02683d365c982c0089b338f92d2e2fe7b5ae099dbaa635b
19f2101d500dfa2ba71baf220497fe8888667bb7d9c8cf4996087ff67c11d156
SH256 hash:
5dab4a92b3915f5f1ee07b1af58f33476907d09f28659a11b93a9a813213969a
MD5 hash:
57504a485f21da636fc6682f5f236bdf
SHA1 hash:
e70c5bd4e6149468ab8cf050ae250b06fdd916ad
Link:
https://www.unpac.me/results/6920fd1b-8127-4943-8a2f-4009c81a23b7/
SH256 hash:
1c5e0a0d909d1da24af87967a1e154c8aa490a1f99c6624e7214d20eb84f4fec
MD5 hash:
81faf15c7e3c9446d906659f7c7a9f16
SHA1 hash:
d7e05a22b109ce608109dc509029a7fe22b4b8bf
Link:
https://www.unpac.me/results/6920fd1b-8127-4943-8a2f-4009c81a23b7/
SH256 hash:
66b02d69d4eff510190fb38504be6dcf9f94d28f14b0569c7d1cd36bfb78983d
MD5 hash:
d59f82dcd426fe19fa03336cbe13a6fe
SHA1 hash:
a973eec6e0ead9558a5fba6193468a70bcdb1108
Link:
https://www.unpac.me/results/6920fd1b-8127-4943-8a2f-4009c81a23b7/
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/66b02d69d4eff510190fb38504be6dcf9f94d28f14b0569c7d1cd36bfb78983d

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: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 66b02d69d4eff510190fb38504be6dcf9f94d28f14b0569c7d1cd36bfb78983d

(this sample)

  
Delivery method
Distributed via e-mail attachment

Comments