MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f559645f8b05d3c7499f23fd4f6f8f74dad45c3b2501266db7c36b67c8e80e7a. 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: f559645f8b05d3c7499f23fd4f6f8f74dad45c3b2501266db7c36b67c8e80e7a
SHA3-384 hash: c505f36c93fb10254c44eb165533d59686d574c1882f9105b4d1431bb6dc8b444c14127ddb1006c85c08584a26d432a7
SHA1 hash: 7e3f1550b2d894ce3122c7cd9f1147091081eec1
MD5 hash: d95ccf4bb29685e51b73ba5cdbe1debc
humanhash: august-stairway-apart-connecticut
File name:d95ccf4bb29685e51b73ba5cdbe1debc.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:247'721 bytes
First seen:2021-05-26 06:01:11 UTC
Last seen:2021-05-26 07:07:15 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 099c0646ea7282d232219f8807883be0 (476 x Formbook, 210 x Loki, 107 x AgentTesla)
ssdeep 6144:8shiZNnaZAmPnEWZxBhuavEKaHYoiT2QGfSCv:F2aZnBhxEKa4oaWr
Threatray 5'382 similar samples on MalwareBazaar
TLSH E734138ADEC6D8D3FD8709711EB76353FBB696001D3247A76F214EE9301C2A796051D8
Reporter abuse_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
99
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Performa Invoice.msg
Verdict:
Malicious activity
Analysis date:
2021-05-25 15:08:08 UTC
Tags:
encrypted opendir exploit CVE-2017-11882 loader trojan formbook stealer
Link:
https://app.any.run/tasks/cb2fcf97-fbfc-4f1e-a8ba-0997c868c4a0

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/162218/
Detection(s):
SecuriteInfo.com.Mal.Generic-S.9143.27910.UNOFFICIAL
Create hunting rule

PUA.Win.Trojan.Casino-141
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file in the %temp% directory
Creating a file
Sending a UDP request
Creating a file in the %AppData% subdirectories
Unauthorized injection to a recently created process
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Result
Verdict:
MALICIOUS
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.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/792256
Signature
C2 URLs / IPs found in malware configuration
Detected FormBook malware
Detected unpacking (changes PE section rights)
Found malware configuration
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
System process connects to network (likely due to code injection or exploit)
Tries to detect virtualization through RDTSC time measurements
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file access)
Uses netstat to query active network connections and open ports
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 424655 Sample: MkV1zeHKw7.exe Startdate: 26/05/2021 Architecture: WINDOWS Score: 100 54 Found malware configuration 2->54 56 Malicious sample detected (through community Yara rule) 2->56 58 Multi AV Scanner detection for submitted file 2->58 60 4 other signatures 2->60 10 MkV1zeHKw7.exe 1 23 2->10         started        process3 file4 44 C:\Users\user\AppData\...\vvlqdyjreehkj.exe, PE32 10->44 dropped 46 C:\Users\user\AppData\Local\...\System.dll, PE32 10->46 dropped 82 Detected unpacking (changes PE section rights) 10->82 84 Maps a DLL or memory area into another process 10->84 86 Tries to detect virtualization through RDTSC time measurements 10->86 14 MkV1zeHKw7.exe 10->14         started        signatures5 process6 signatures7 88 Modifies the context of a thread in another process (thread injection) 14->88 90 Maps a DLL or memory area into another process 14->90 92 Sample uses process hollowing technique 14->92 94 Queues an APC in another process (thread injection) 14->94 17 explorer.exe 14->17 injected process8 dnsIp9 48 www.myworkaccident.com 74.220.199.6, 49735, 49736, 49737 UNIFIEDLAYER-AS-1US United States 17->48 50 sxkeyuanda.com.lo915.faipod.com 103.72.145.225, 49748, 49749, 49750 UHGL-AS-APUCloudHKHoldingsGroupLimitedHK China 17->50 52 4 other IPs or domains 17->52 62 System process connects to network (likely due to code injection or exploit) 17->62 64 Uses netstat to query active network connections and open ports 17->64 21 systray.exe 18 17->21         started        25 vvlqdyjreehkj.exe 18 17->25         started        27 NETSTAT.EXE 17->27         started        29 vvlqdyjreehkj.exe 16 17->29         started        signatures10 process11 file12 38 C:\Users\user\AppData\...\10Llogrv.ini, data 21->38 dropped 40 C:\Users\user\AppData\...\10Llogri.ini, data 21->40 dropped 66 Detected FormBook malware 21->66 68 Tries to steal Mail credentials (via file access) 21->68 70 Tries to harvest and steal browser information (history, passwords, etc) 21->70 80 2 other signatures 21->80 31 cmd.exe 2 21->31         started        42 C:\Users\user\AppData\Local\...\System.dll, PE32 25->42 dropped 72 Multi AV Scanner detection for dropped file 25->72 74 Detected unpacking (changes PE section rights) 25->74 76 Machine Learning detection for dropped file 25->76 34 vvlqdyjreehkj.exe 25->34         started        78 Tries to detect virtualization through RDTSC time measurements 27->78 signatures13 process14 signatures15 96 Tries to harvest and steal browser information (history, passwords, etc) 31->96 36 conhost.exe 31->36         started        98 Modifies the context of a thread in another process (thread injection) 34->98 100 Maps a DLL or memory area into another process 34->100 102 Sample uses process hollowing technique 34->102 process16
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/f559645f8b05d3c7499f23fd4f6f8f74dad45c3b2501266db7c36b67c8e80e7a/
Threat name:
Win32.Trojan.Zenpak
Create hunting rule
Status:
Malicious
First seen:
2021-05-25 15:43:41 UTC
AV detection:
17 of 47 (36.17%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=6vmwix4laxj4osm7ep6u634potnnixb3euasm3nxynvwpshibz5a._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
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Formbook
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e3ccade6f4b9accc6cffa813b88862d68f78f0f1c601a57d0573e60deea6a370
Formbook
+ 5'372 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook persistence rat spyware stealer trojan
Link:
https://tria.ge/reports/210526-fax2xbjyve/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Adds Run key to start application
Loads dropped DLL
Formbook Payload
Formbook
Malware Config
C2 Extraction:
http://www.personalizedyardsigns.com/xkcp/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.77
Link:
https://yomi.yoroi.company/submissions/f559645f8b05d3c7499f23fd4f6f8f74dad45c3b2501266db7c36b67c8e80e7a

File information

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

Web download

Formbook

Executable exe f559645f8b05d3c7499f23fd4f6f8f74dad45c3b2501266db7c36b67c8e80e7a

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/1284997/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/162218/

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