MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 e66a524df69a19ea2fc31787e557c8738473af8e4dc7e5ca87619910b3f0a121. 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: 7


Intelligence 7 IOCs YARA 1 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: e66a524df69a19ea2fc31787e557c8738473af8e4dc7e5ca87619910b3f0a121
SHA3-384 hash: cd70847b5cf60f8f2f263690082a59cca2ee98f741c8e6b42d0b1d2715b47f18a71249b4f7de7cd335882d8572eebbd3
SHA1 hash: 6b5c404b8735b27af99b9965994dd03ab3c060eb
MD5 hash: 12c9772f20e4ce33669d49cd0a3f7d05
humanhash: aspen-lake-kitten-paris
File name:12c9772f20e4ce33669d49cd0a3f7d05.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:582'705 bytes
First seen:2020-11-05 15:37:27 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 7c2c71dfce9a27650634dc8b1ca03bf0 (160 x Loki, 58 x Formbook, 55 x Adware.Generic)
ssdeep 12288:van1eBiGoEHeVczi7c+cv8DK6ihH9kXjqrEpQf0VXaMTBww+jhwdbf9+:KAiKswT8D4dQqrEp80cMTBww+dw/+
Threatray 3'076 similar samples on MalwareBazaar
TLSH D7C4235333A99097E93082F8257FB5BBEF961D191811C4A38BB0BF59B8B15937D0F082
Reporter abuse_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
71
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/83307/
Detection(s):
PUA.Win.Downloader.Soft32downloader-6691270-0
Create hunting rule

PUA.Win.Adware.Browserio-6725861-0
Create hunting rule

SecuriteInfo.com.Artemis162931E90DCF.4593.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file in the %temp% directory
Creating a file in the %AppData% subdirectories
Creating a file
Launching a process
Launching cmd.exe command interpreter
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/521722
Signature
Hijacks the control flow in another process
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
Overwrites code with unconditional jumps - possibly settings hooks in foreign process
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
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 309966 Sample: Lyh84tCfgI.exe Startdate: 05/11/2020 Architecture: WINDOWS Score: 100 55 Malicious sample detected (through community Yara rule) 2->55 57 Multi AV Scanner detection for dropped file 2->57 59 Multi AV Scanner detection for submitted file 2->59 61 2 other signatures 2->61 11 Lyh84tCfgI.exe 62 2->11         started        process3 file4 33 C:\Users\user\AppData\...\PuppetBedouin.dll, PE32 11->33 dropped 35 C:\Users\user\AppData\...\vdtflavuil.dll, PE32 11->35 dropped 37 C:\Users\user\AppData\...\spcustom.dll, PE32 11->37 dropped 39 9 other files (none is malicious) 11->39 dropped 14 rundll32.exe 11->14         started        process5 signatures6 71 Overwrites code with unconditional jumps - possibly settings hooks in foreign process 14->71 73 Hijacks the control flow in another process 14->73 75 Maps a DLL or memory area into another process 14->75 17 cmd.exe 14->17         started        20 cmd.exe 14->20         started        process7 signatures8 45 Overwrites code with unconditional jumps - possibly settings hooks in foreign process 17->45 47 Modifies the context of a thread in another process (thread injection) 17->47 49 Maps a DLL or memory area into another process 17->49 53 2 other signatures 17->53 22 explorer.exe 17->22 injected 51 Tries to detect virtualization through RDTSC time measurements 20->51 process9 dnsIp10 41 www.drillingclient.com 52.58.78.16, 49768, 80 AMAZON-02US United States 22->41 43 www.6644253.com 22->43 63 System process connects to network (likely due to code injection or exploit) 22->63 26 mstsc.exe 22->26         started        signatures11 process12 signatures13 65 Modifies the context of a thread in another process (thread injection) 26->65 67 Maps a DLL or memory area into another process 26->67 69 Tries to detect virtualization through RDTSC time measurements 26->69 29 cmd.exe 1 26->29         started        process14 process15 31 conhost.exe 29->31         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/e66a524df69a19ea2fc31787e557c8738473af8e4dc7e5ca87619910b3f0a121/
Threat name:
Win32.Trojan.Ymacco
Create hunting rule
Status:
Malicious
First seen:
2020-11-05 05:14:02 UTC
AV detection:
22 of 29 (75.86%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=4zvfetpwtim6ul6dc6d6kv6ioochhl4ojxd6lsuhmgmrbm7queqq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
07b296fafcefb5dbbf7148a96fc968664011aca0070b72732fb00886fbea9741
Formbook
106f9f66c54be3c20be8f04ce63f5d6183d6eb9e79a6b243b5c820cc01ee24cb
Formbook
353e4fd91fe618f5c22c9cae00e7575e9b1914576ff7e332d03ca3e9f7dbbbbc
Formbook
546ca9154ddc425843391ba45da25d60e4c89d85d34dfc5028fb56ed94861bbf
Formbook
5806ff817e0b0c3c57e727b04c77411487179c3676150f3f1cf536d3fac33fa5
Formbook
9feae92d12fa03fc35f79af2670703aa18a2dcb39d65c6415f81239eb5af011c
Formbook
c63da2dca25d6d1c17fcfd8041424f2232878b734072ab55f1c31a6fa083a9fa
Formbook
da8c31096f9e2ffc9a1fea4a63d6440cfda55349845300b4f333a02317c73dde
Formbook
deee3ad263c3947b20580cce3310c53219217e21588479e7152eda86b9f6f08e
Formbook
e38e6ac839b8009c1c6d467ed4206f912c39a15af7a1fa7ba4a2a854e441fe50
Formbook
+ 3'066 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook rat spyware stealer trojan
Link:
https://tria.ge/reports/201105-aksat5l4aj/
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
Loads dropped DLL
Formbook Payload
Formbook
Malware Config
C2 Extraction:
http://www.6644253.com/vdi/
Unpacked files
SH256 hash:
e66a524df69a19ea2fc31787e557c8738473af8e4dc7e5ca87619910b3f0a121
MD5 hash:
12c9772f20e4ce33669d49cd0a3f7d05
SHA1 hash:
6b5c404b8735b27af99b9965994dd03ab3c060eb
Link:
https://www.unpac.me/results/96480913-296c-4a3c-9b9d-f7bf6b019d81/
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:INDICATOR_SUSPICIOUS_Stomped_PECompilation_Timestamp_InTheFuture
Create hunting rule
Author:ditekSHen
Description:Detect executables with stomped PE compilation timestamp that is greater than local current time

File information

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

Cape
Cape
https://www.capesandbox.com/analysis/83307/

Comments