MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b7859dd4f12959b0c3b717089ddde8f623d288e27d092d93b06afaf9fc4a51d8. 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: b7859dd4f12959b0c3b717089ddde8f623d288e27d092d93b06afaf9fc4a51d8
SHA3-384 hash: 88895e1684170a1b077466167efba81837816daa759d20be577480b0835d5144cc5ce7d13aaf2ccc42d21408683a918b
SHA1 hash: 2fcb1c1383a440f4c5042f22d98184e129161775
MD5 hash: ba89aebee75fc99d101749cfb8ed00cc
humanhash: florida-double-fruit-undress
File name:ba89aebee75fc99d101749cfb8ed00cc.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:489'984 bytes
First seen:2020-10-13 08:16:44 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 6144:wfP65HsW7kFuG97mwIxeKg0xb5+aYVfpX+ATNnEYq91CDrxrcmOmCcmnQVS9yD8h:wOHVywgE5+aCMAtb4mOmQniDb
Threatray 3'689 similar samples on MalwareBazaar
TLSH 05A4AEE5368E5829F5198375D0A9B2C3F13D27C63F1C8E0EBD8A430D5D23A0BA766617
Reporter abuse_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
105
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/70346/
Detection(s):
SecuriteInfo.com.BehavesLike.Win32.Generic.gc.4445.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending a UDP request
Creating a file in the %temp% subdirectories
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/489408
Signature
.NET source code contains very large array initializations
Allocates memory in foreign processes
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
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: 297154 Sample: ZxGxgwV830.exe Startdate: 13/10/2020 Architecture: WINDOWS Score: 100 34 Malicious sample detected (through community Yara rule) 2->34 36 Multi AV Scanner detection for submitted file 2->36 38 Yara detected FormBook 2->38 40 3 other signatures 2->40 10 ZxGxgwV830.exe 8 2->10         started        process3 file4 26 C:\Users\user\AppData\...\InstallUtil.exe, PE32 10->26 dropped 28 C:\Users\user\AppData\...\ZxGxgwV830.exe.log, ASCII 10->28 dropped 30 C:\Users\user\AppData\...\AgileDotNetRT.dll, PE32 10->30 dropped 32 C:\Users\user\AppData\Local\Temp\...\D.dll, PE32 10->32 dropped 46 Writes to foreign memory regions 10->46 48 Allocates memory in foreign processes 10->48 50 Tries to detect virtualization through RDTSC time measurements 10->50 52 Injects a PE file into a foreign processes 10->52 14 InstallUtil.exe 10->14         started        signatures5 process6 signatures7 54 Modifies the context of a thread in another process (thread injection) 14->54 56 Maps a DLL or memory area into another process 14->56 58 Sample uses process hollowing technique 14->58 60 2 other signatures 14->60 17 explorer.exe 14->17 injected process8 process9 19 WWAHost.exe 17->19         started        signatures10 42 Maps a DLL or memory area into another process 19->42 44 Tries to detect virtualization through RDTSC time measurements 19->44 22 cmd.exe 1 19->22         started        process11 process12 24 conhost.exe 22->24         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/b7859dd4f12959b0c3b717089ddde8f623d288e27d092d93b06afaf9fc4a51d8/
Threat name:
ByteCode-MSIL.Trojan.Wacatac
Create hunting rule
Status:
Malicious
First seen:
2020-10-13 07:17:03 UTC
AV detection:
24 of 29 (82.76%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=w6cz3vhrffm3bq5xc4ej3xpi6yr5fchcpues3e5qnl5pt7ckkhma._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
0538ad6e3f92ea13a5a3dadb18e807ce26097bbfd2f473e873a514b6dbbe8f5d
Formbook
145880ed94e0db3cab65cb54db4728520f1ac5f95ff2b0dda2650233542dd706
Formbook
6841a00603c067163259e142990659c0217ded69e2895d187fa65f9439034c7f
Formbook
82ec33dd4f26eab172d8a0fc536751d12153a3f7175351da311a7059217c670e
Formbook
914712c702b94abb26e0d1edbd54712d62a2fdb6cfbc9bd41ac8bcb84296358f
Formbook
bd959929f72ad78adfc193a1b6f3951a41cb2fd273e97680ca41030c7c4ad271
Formbook
bfae046475f1458c460cf4eed534a48c8e769fbfc622138170c3945a4ad61a90
Formbook
d9600ffc9406d71c60b7eb036248230510c3b971a1de563ca7b8b57e822f7879
Formbook
dbdd8dc5bf8c5f81b9cbead4224bade6cd697f6f00cbab59bf084f6e39578a8d
Formbook
e85f434810652692f3e0a0738d9156899afcbd2bed42a6f328f0092d72a1db34
Formbook
+ 3'679 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/201013-ps8lwjjv2a/
Behaviour
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SetThreadContext
Loads dropped DLL
Executes dropped EXE
Formbook Payload
Formbook
Malware Config
C2 Extraction:
http://www.elevatedqueensnc.com/ajr/
Unpacked files
SH256 hash:
b7859dd4f12959b0c3b717089ddde8f623d288e27d092d93b06afaf9fc4a51d8
MD5 hash:
ba89aebee75fc99d101749cfb8ed00cc
SHA1 hash:
2fcb1c1383a440f4c5042f22d98184e129161775
Link:
https://www.unpac.me/results/4e5e48e4-5572-4542-9d48-6863ec3b68f0/
SH256 hash:
89aa143c91d8cace96581d1ad1e4a67060238498168d9e412227019a838574a3
MD5 hash:
beadcc53a3524ce380a7b07b4da47d57
SHA1 hash:
7014b2381ef1ca0f0c8f1b0884315260dc73932f
Link:
https://www.unpac.me/results/4e5e48e4-5572-4542-9d48-6863ec3b68f0/
SH256 hash:
19d9922060be89a70b76e5c0056e751f1baa5d41819235c92cf4f5d7668e1267
MD5 hash:
811864a0b06c529af894a7fec6ddbf47
SHA1 hash:
d35b82933eb06a6ec60e8cbbdb65eb6cdcaeb6d2
Link:
https://www.unpac.me/results/4e5e48e4-5572-4542-9d48-6863ec3b68f0/
Parent samples :
afa2f55e149097f9b250142bbfd94d9d56d10649c96adb079fdb0dfdac7c6660
69e2ae11e1b5cbe120bf02301191a1cf05e87fc09b09d63bd782abbf3615d05d
0b778873c94f6bc89a40294c0e85a38ab82509260cd2a2e8b73d00c5c90e8757
7ddfa6f44a60f4b894321f6977f8121cfb371c3c61ac872c58ba61fd5ee13deb
SH256 hash:
f8bee4108a324df32ad5a2ebafa6b7f411402a21e2598cf9db66486970f80fdd
MD5 hash:
a92da98ff6f5ae608503d074617bcc2a
SHA1 hash:
d3eafcccca011bb3a7a5ae52dd9704ceafcde472
Link:
https://www.unpac.me/results/4e5e48e4-5572-4542-9d48-6863ec3b68f0/
SH256 hash:
2722ef944acd7e6e9e8b7c30a99cc9b48ff426af06dcbb423daaa19536424de8
MD5 hash:
4efe7181fa62da14a7f93804154e7354
SHA1 hash:
43f6f15a8918d5148a814655a0323c5b3cc2ba86
Link:
https://www.unpac.me/results/4e5e48e4-5572-4542-9d48-6863ec3b68f0/
SH256 hash:
2e62cdc2bcfb40cfadfaaf8f15c5b2cb18d293240c40137506e593b309a2ad00
MD5 hash:
e9b4d866a5fce473853ebe67d7b44344
SHA1 hash:
5a90e25d4b630026faeb4df52f18b4d7ed0e32d7
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/4e5e48e4-5572-4542-9d48-6863ec3b68f0/
Parent samples :
0538ad6e3f92ea13a5a3dadb18e807ce26097bbfd2f473e873a514b6dbbe8f5d
145880ed94e0db3cab65cb54db4728520f1ac5f95ff2b0dda2650233542dd706
bfae046475f1458c460cf4eed534a48c8e769fbfc622138170c3945a4ad61a90
b7859dd4f12959b0c3b717089ddde8f623d288e27d092d93b06afaf9fc4a51d8
1d9958a0a083b0f134bf5c777e6cee112d30f6059e3f7d301cf78e3777b7a637
5c5f5e9cd06c7c7da03edfc2cd3dd6d45cfdcb5fe1b8e1fbb26fa63c264eb3b6
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Kryptik
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/b7859dd4f12959b0c3b717089ddde8f623d288e27d092d93b06afaf9fc4a51d8

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

File information

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

Web download

Formbook

Executable exe b7859dd4f12959b0c3b717089ddde8f623d288e27d092d93b06afaf9fc4a51d8

(this sample)

Cape
Cape
https://www.capesandbox.com/analysis/70346/
  
URLhaus
https://urlhaus.abuse.ch/url/684818/
  
Delivery method
Distributed via web download

Comments