MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 890b8392c6add902841f3da3e66d6d82eb571b41c5abbc7df0685935e0d9d730. 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 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 890b8392c6add902841f3da3e66d6d82eb571b41c5abbc7df0685935e0d9d730
SHA3-384 hash: d8b26e7237e4860b15c8dee86c55da0d7ad1adfe26faacf6fefbd9dca04fea2ff919c131bfb67953110e5e7f7efe166e
SHA1 hash: afd2ca3ae2f1c429e32b1718cdaba38c187e66f0
MD5 hash: 7e04c5ed79d1de3328419ff897502f4a
humanhash: cat-idaho-floor-colorado
File name:Complete Certificate.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:505'856 bytes
First seen:2021-04-08 13:52:24 UTC
Last seen:2021-04-08 15:10:27 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 6144:nqWKNu55RIuGDQS2RPP7k1ZQsYiArAndNSoKwPoD9v:/KNu55RIPDQRPo1lAUdNVvY9v
TLSH 06B49B56AD348158FDDE4EB186A942D71AD2EC532A61906FD3507F26C23239CFCCA2F4
Reporter cocaman
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
110
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Complete Certificate.exe
Verdict:
Malicious activity
Analysis date:
2021-04-08 16:13:28 UTC
Tags:
trojan formbook stealer
Link:
https://app.any.run/tasks/f8c81de6-63f0-4368-ac50-a52779648b43

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/133220/
Detection(s):
SecuriteInfo.com.Artemis7E04C5ED79D1.6822.2775.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending a UDP request
Creating a file in the %temp% directory
Creating a process from a recently created file
Creating a file
Launching the process to change network settings
Launching cmd.exe command interpreter
Setting browser functions hooks
Unauthorized injection to a recently created process
Unauthorized injection to a recently created process by context flags manipulation
Unauthorized injection to a system process
Unauthorized injection to a browser 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/670271
Signature
.NET source code contains potential unpacker
Allocates memory in foreign processes
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Found malware configuration
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
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 dropped file
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
Writes to foreign memory regions
Yara detected Costura Assembly Loader
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 384080 Sample: Complete Certificate.exe Startdate: 08/04/2021 Architecture: WINDOWS Score: 100 35 www.thejosephnashvilletn.com 2->35 43 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->43 45 Found malware configuration 2->45 47 Malicious sample detected (through community Yara rule) 2->47 49 12 other signatures 2->49 11 Complete Certificate.exe 3 2->11         started        signatures3 process4 file5 29 C:\Users\user\...\Complete Certificate.exe, PE32 11->29 dropped 31 Complete Certificate.exe:Zone.Identifier, ASCII 11->31 dropped 33 C:\Users\...\Complete Certificate.exe.log, ASCII 11->33 dropped 59 Writes to foreign memory regions 11->59 61 Allocates memory in foreign processes 11->61 63 Injects a PE file into a foreign processes 11->63 15 Complete Certificate.exe 11->15         started        signatures6 process7 signatures8 65 Modifies the context of a thread in another process (thread injection) 15->65 67 Maps a DLL or memory area into another process 15->67 69 Sample uses process hollowing technique 15->69 71 Queues an APC in another process (thread injection) 15->71 18 explorer.exe 15->18 injected process9 dnsIp10 37 www.the-techs.info 18->37 39 www.impressivebackyard.com 18->39 41 3 other IPs or domains 18->41 51 System process connects to network (likely due to code injection or exploit) 18->51 22 explorer.exe 18->22         started        signatures11 process12 signatures13 53 Modifies the context of a thread in another process (thread injection) 22->53 55 Maps a DLL or memory area into another process 22->55 57 Tries to detect virtualization through RDTSC time measurements 22->57 25 cmd.exe 1 22->25         started        process14 process15 27 conhost.exe 25->27         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/890b8392c6add902841f3da3e66d6d82eb571b41c5abbc7df0685935e0d9d730/
Threat name:
ByteCode-MSIL.Trojan.FormBook
Create hunting rule
Status:
Malicious
First seen:
2021-04-08 12:13:00 UTC
File Type:
PE (.Net Exe)
Extracted files:
43
AV detection:
15 of 29 (51.72%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=refyhewgvxmqfba7hwr6m3lnqlvvog2bywv3y7pqnbmtlygz24ya._file
Verdict:
suspicious
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook rat spyware stealer trojan
Link:
https://tria.ge/reports/210408-sg72e8j27j/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of UnmapMainImage
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Deletes itself
Formbook Payload
Formbook
Malware Config
C2 Extraction:
http://www.the-techs.info/chue/
Unpacked files
SH256 hash:
c65c8788dc0fc6e300b0126c6ea11895c6edccda66a0ad724053b4bb9c0b423a
MD5 hash:
28510a0f9d0af28d6dea10f55e0d5a44
SHA1 hash:
4c0960348c36f92fb52157f3f4335664a0648918
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/93b4b46d-c066-4220-93b3-f27514f263bf/
Parent samples :
002ec09931d23f0e66d86eda11ce72113d3e29a1cd0bd296b83ee567981610d8
0aaa10495fff6567ec8ecb5fa1ea118ad1b1230c77db540c0dd7cb6f1d26f6fb
2e10edfbe7c4a7c9220db55d3c6f921262366908277a5483ff0faf5579e194f4
4f450fcf02d7006fd4fbea8c2cad999397672d44864f1e8c504633ce53c3d53d
890b8392c6add902841f3da3e66d6d82eb571b41c5abbc7df0685935e0d9d730
9dbdef7d88f84edb9e7e45115e8186915f6c37b0fd7b29b5db64689b14f28b9c
SH256 hash:
2a01d70a2a1bffaa83a65cac80085e27663d531d1753d37b1da0828ce454c7e0
MD5 hash:
02b30480acd88b714d813273054a4dd0
SHA1 hash:
f27e7bbd5fd52d380fe58ea7cffb16bf5f09de6f
Link:
https://www.unpac.me/results/93b4b46d-c066-4220-93b3-f27514f263bf/
SH256 hash:
cbf24a4b96186ebdd15d8feabd9bd1d5b0fe36c759e1a804af3cbe212b7b1b34
MD5 hash:
2d6322ab08990e1efdbdf2f311ac2042
SHA1 hash:
41e33d8af5d2ec5982427653fe86b6e1def9fe61
Link:
https://www.unpac.me/results/93b4b46d-c066-4220-93b3-f27514f263bf/
SH256 hash:
890b8392c6add902841f3da3e66d6d82eb571b41c5abbc7df0685935e0d9d730
MD5 hash:
7e04c5ed79d1de3328419ff897502f4a
SHA1 hash:
afd2ca3ae2f1c429e32b1718cdaba38c187e66f0
Link:
https://www.unpac.me/results/93b4b46d-c066-4220-93b3-f27514f263bf/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/890b8392c6add902841f3da3e66d6d82eb571b41c5abbc7df0685935e0d9d730

File information

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

Malspam

Formbook

rar e0fcd83ffe9c39aebfa2e17d6bc7f76c3f8d06dcfed3bc3b753e8d436e09296f

Formbook

Executable exe 890b8392c6add902841f3da3e66d6d82eb571b41c5abbc7df0685935e0d9d730

(this sample)

  
Delivery method
Other
  
Dropped by
SHA256 e0fcd83ffe9c39aebfa2e17d6bc7f76c3f8d06dcfed3bc3b753e8d436e09296f
Cape
Cape
https://www.capesandbox.com/analysis/133220/

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