MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 ef0d4bf082291155c82f86ebda948f3fafed56b2d167463f6b59a1a964e7ccfb. 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: 9


Intelligence 9 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: ef0d4bf082291155c82f86ebda948f3fafed56b2d167463f6b59a1a964e7ccfb
SHA3-384 hash: 0f57592711a1d7ffce35b972e7810a5bb31a29886d3aeaf1fd4de077484b329e1e3a0fc4b6ee92aa211ff98b16e19af8
SHA1 hash: 133717a2ccb2f78e6d00fad15a4363e21c83b59a
MD5 hash: c43ac0b68ccb480102bd1806854f9398
humanhash: queen-lactose-jersey-missouri
File name:file.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:483'840 bytes
First seen:2020-11-05 08:15:02 UTC
Last seen:2020-11-05 09:35:19 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'744 x AgentTesla, 19'609 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 6144:eOaKNg0yUzYCo3eefEhpAe9jXsuDe1Mz1CHgQcuHURTLT:eOatJYYCKeeApX9zsRqz1CHgvui
Threatray 4'251 similar samples on MalwareBazaar
TLSH 5EA49DB2F8A5586EC95A0275056981C0B5F61FC67FAC8B0DB1BB73080E316D7A713E4B
Reporter abuse_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
89
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/83106/
Detection(s):
SecuriteInfo.com.Heur.Variadic.A.117.1.31264.30420.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Creating a file in the %temp% directory
Creating a file
Creating a process from a recently created file
Launching a process
Creating a file in the %AppData% subdirectories
Reading critical registry keys
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
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/521048
Signature
.NET source code contains very large array initializations
Allocates memory in foreign processes
Detected FormBook malware
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
Sigma detected: Steal Google chrome login data
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 virtualization through RDTSC time measurements
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file access)
Writes to foreign memory regions
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 309622 Sample: file.exe Startdate: 05/11/2020 Architecture: WINDOWS Score: 100 47 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->47 49 Malicious sample detected (through community Yara rule) 2->49 51 Multi AV Scanner detection for submitted file 2->51 53 5 other signatures 2->53 10 file.exe 6 2->10         started        process3 file4 37 C:\Users\user\AppData\Local\...\ngentask.exe, PE32 10->37 dropped 39 C:\Users\user\AppData\Local\...\file.exe.log, ASCII 10->39 dropped 41 C:\Users\user\AppData\...\AgileDotNetRT.dll, PE32 10->41 dropped 67 Writes to foreign memory regions 10->67 69 Allocates memory in foreign processes 10->69 71 Tries to detect virtualization through RDTSC time measurements 10->71 73 Injects a PE file into a foreign processes 10->73 14 ngentask.exe 10->14         started        signatures5 process6 signatures7 75 Modifies the context of a thread in another process (thread injection) 14->75 77 Maps a DLL or memory area into another process 14->77 79 Sample uses process hollowing technique 14->79 81 2 other signatures 14->81 17 explorer.exe 14->17 injected process8 dnsIp9 43 wywindhere.net 34.102.136.180, 49760, 49761, 49762 GOOGLEUS United States 17->43 45 www.wywindhere.net 17->45 55 System process connects to network (likely due to code injection or exploit) 17->55 21 msiexec.exe 18 17->21         started        signatures10 process11 file12 31 C:\Users\user\AppData\...\-L-logrv.ini, data 21->31 dropped 33 C:\Users\user\AppData\...\-L-logri.ini, data 21->33 dropped 57 Detected FormBook malware 21->57 59 Tries to steal Mail credentials (via file access) 21->59 61 Tries to harvest and steal browser information (history, passwords, etc) 21->61 63 3 other signatures 21->63 25 cmd.exe 2 21->25         started        signatures13 process14 file15 35 C:\Users\user\AppData\Local\Temp\DB1, SQLite 25->35 dropped 65 Tries to harvest and steal browser information (history, passwords, etc) 25->65 29 conhost.exe 25->29         started        signatures16 process17
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/ef0d4bf082291155c82f86ebda948f3fafed56b2d167463f6b59a1a964e7ccfb/
Threat name:
ByteCode-MSIL.Trojan.Variadic
Create hunting rule
Status:
Malicious
First seen:
2020-11-05 07:03:16 UTC
AV detection:
26 of 29 (89.66%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=54gux4ecfeivlsbpq3v5vfeph6x62vvs2ftump3llgq2szhhzt5q._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
333a258f45e7a8baaab72b1539859a00bca7309a8d641490329184977090b540
Formbook
3f98571de88f8e13c4197c46d74287d2f0aef827a196ea51cb4b934c6857e04b
Formbook
6841a00603c067163259e142990659c0217ded69e2895d187fa65f9439034c7f
Formbook
82ec33dd4f26eab172d8a0fc536751d12153a3f7175351da311a7059217c670e
Formbook
914712c702b94abb26e0d1edbd54712d62a2fdb6cfbc9bd41ac8bcb84296358f
Formbook
b7859dd4f12959b0c3b717089ddde8f623d288e27d092d93b06afaf9fc4a51d8
Formbook
bd959929f72ad78adfc193a1b6f3951a41cb2fd273e97680ca41030c7c4ad271
Formbook
d9600ffc9406d71c60b7eb036248230510c3b971a1de563ca7b8b57e822f7879
Formbook
d97aa63a43e409e490adc5b21a08313841565a76215278c37bcb411828a0a822
Formbook
e4d5d94ced6c3f57c4aa9c9d7b910ff1fa99d2befda7e8d2bd3749a687be8f3d
Formbook
+ 4'241 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
agilenet family:formbook rat spyware stealer trojan
Link:
https://tria.ge/reports/201105-pvgqmsdzqe/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Program crash
Suspicious use of SetThreadContext
Loads dropped DLL
Obfuscated with Agile.Net obfuscator
Executes dropped EXE
Formbook Payload
Formbook
Malware Config
C2 Extraction:
http://www.libertraxengineering.com/rte/
Unpacked files
SH256 hash:
ef0d4bf082291155c82f86ebda948f3fafed56b2d167463f6b59a1a964e7ccfb
MD5 hash:
c43ac0b68ccb480102bd1806854f9398
SHA1 hash:
133717a2ccb2f78e6d00fad15a4363e21c83b59a
Link:
https://www.unpac.me/results/706ff8c5-d7c9-4928-bfa1-d73b35cbf77b/
SH256 hash:
21f0cb5625ba519b16112be3c2f8458731b32dbf1e56efcf48ac9d234f1e8448
MD5 hash:
f1220039fced3e32ca13725edc57700b
SHA1 hash:
25ffe8fc04868d8fb2bbef9addef5fef8d0f420d
Link:
https://www.unpac.me/results/706ff8c5-d7c9-4928-bfa1-d73b35cbf77b/
SH256 hash:
30140c3bf5874d7d184b15513016f9de1524ae95a5efe9a1cb15bad6d6936d64
MD5 hash:
03847d82611bc6461cbb99ca768828f1
SHA1 hash:
39859a3fd3326520dfd1ed10456bb227933a8871
Link:
https://www.unpac.me/results/706ff8c5-d7c9-4928-bfa1-d73b35cbf77b/
SH256 hash:
6d84568ecf808c260b873f591e1632d30bf7f14d0c5f9027802f96dcdc375960
MD5 hash:
150a5f8947e62823f735f1d6a841de5c
SHA1 hash:
61b06931e434e0eee08528d47cfc34bbd5ac3d18
Link:
https://www.unpac.me/results/706ff8c5-d7c9-4928-bfa1-d73b35cbf77b/
SH256 hash:
19d9922060be89a70b76e5c0056e751f1baa5d41819235c92cf4f5d7668e1267
MD5 hash:
811864a0b06c529af894a7fec6ddbf47
SHA1 hash:
d35b82933eb06a6ec60e8cbbdb65eb6cdcaeb6d2
Link:
https://www.unpac.me/results/706ff8c5-d7c9-4928-bfa1-d73b35cbf77b/
Parent samples :
afa2f55e149097f9b250142bbfd94d9d56d10649c96adb079fdb0dfdac7c6660
69e2ae11e1b5cbe120bf02301191a1cf05e87fc09b09d63bd782abbf3615d05d
0b778873c94f6bc89a40294c0e85a38ab82509260cd2a2e8b73d00c5c90e8757
7ddfa6f44a60f4b894321f6977f8121cfb371c3c61ac872c58ba61fd5ee13deb
SH256 hash:
816c69acac9b9246d80f7fb8ed80147cbc98809da7aa06c116c2321f298910ba
MD5 hash:
3eaac3af5282f16553de27d89969f72d
SHA1 hash:
26783dec319315cffbadc302268d12c4365a15f0
Link:
https://www.unpac.me/results/706ff8c5-d7c9-4928-bfa1-d73b35cbf77b/
SH256 hash:
d9441785516cf74e6f3c86fa0cecf56b0b69cc361516da974be9cb01f1921df2
MD5 hash:
0345ee3daa51cfc4444366c0e1e1ace7
SHA1 hash:
71f1d93c996ba65f162e963ef7da68ea3221459a
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/706ff8c5-d7c9-4928-bfa1-d73b35cbf77b/
Parent samples :
ef0d4bf082291155c82f86ebda948f3fafed56b2d167463f6b59a1a964e7ccfb
19a8a4216e0f95f9c4ad7d8318599a9e91791867e3b757b16eae9b2f1e38a143
bf149d9178e1dfee8846b6c29664fd04e8b079121706b208dc9389f3ce1d36ac
fd65de40662072e139fcfab07423a32a918e5cd51c42544681835e7fb5f835a6
ef84b1824587f465b36bafcbfbe6a14953e6de0a9420904662ba207984782c80
SH256 hash:
cd4c4a1f87b6e1cdfe5a60dfec2294c42e595b8a2384bef58a817def9c86716b
MD5 hash:
2de809ce8a332139992a04973d675023
SHA1 hash:
bdb570b36411f6dca2a26e3e1317e00663214c96
Link:
https://www.unpac.me/results/706ff8c5-d7c9-4928-bfa1-d73b35cbf77b/
SH256 hash:
ef7df021f330d93299944e458ddc5ea1936182583725c7f4ded94b4e3095737e
MD5 hash:
735f0fd7b6446b4af403b44b1056a1aa
SHA1 hash:
cb74a3729b1370720f3581cfda4c3b6e47af3184
Link:
https://www.unpac.me/results/706ff8c5-d7c9-4928-bfa1-d73b35cbf77b/
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: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
Rule name:win_formbook_g0
Create hunting rule
Author:Slavo Greminger, SWITCH-CERT

File information

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

Malspam

Formbook

Executable exe ef0d4bf082291155c82f86ebda948f3fafed56b2d167463f6b59a1a964e7ccfb

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/83106/

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