MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f755a2e09db3f63b7e9c035a488652b00ccb0678eca144db82e84e9e34345deb. 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: f755a2e09db3f63b7e9c035a488652b00ccb0678eca144db82e84e9e34345deb
SHA3-384 hash: 5563f30b0ccf93a3c0089c48d1f35fad8a48b94617d931f2fc4c09777836d093936647a88ab5a2d2296eb600d293baa0
SHA1 hash: 0622358fabfea0f02433c95880985b3ed1f2f224
MD5 hash: f34019df66e0cdc84771f64542276568
humanhash: alaska-nebraska-johnny-aspen
File name:e8NS1CJtIRhReBU.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:711'168 bytes
First seen:2020-10-21 09:47:52 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'649 x AgentTesla, 19'461 x Formbook, 12'202 x SnakeKeylogger)
ssdeep 12288:4HlBpZw0DEEYOfoGSqtmwv5yQqZvTf2YkqJx5DlIJ8HVHmRIBEKTD8jdVI6KfzKs:4HlB0vwSgQQqZvTf5kqJxGsQYI5
TLSH 8BE401C5BF193DEFC8EBD4328B449C28BB2021B7572B43165C27D4A8BA4D256CB14DE6
Reporter abuse_ch
Tags:exe FormBook Outlook


Avatar
abuse_ch
Malspam distributing unidentified malware:

HELO: NAM11-BN8-obe.outbound.protection.outlook.com
Sending IP: 40.92.20.97
From: xinhle@hotmail.com
Reply-To: chukwudifrank56@yahoo.com
Subject: RE: RE: URGENTLY CONFIRM QUOTE FOR PAYMENT
Attachment: QUOTE_USD108,500-INV.rar (contains "e8NS1CJtIRhReBU.exe")

Intelligence

File Origin
# of uploads :
1
# of downloads :
76
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/73946/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending a UDP request
Creating a window
Creating a file in the %AppData% directory
Creating a file in the %temp% directory
Launching a process
Creating a process with a hidden window
Deleting a recently created file
Unauthorized injection to a recently created process
Creating a file
Launching cmd.exe command interpreter
Setting browser functions hooks
Enabling autorun by creating a file
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/505587
Signature
Detected unpacking (changes PE section rights)
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
PE file contains section with special chars
PE file has nameless sections
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Sigma detected: Scheduled temp file as task from temp location
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
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected AntiVM_3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 301843 Sample: e8NS1CJtIRhReBU.exe Startdate: 21/10/2020 Architecture: WINDOWS Score: 100 42 Malicious sample detected (through community Yara rule) 2->42 44 Multi AV Scanner detection for dropped file 2->44 46 Sigma detected: Scheduled temp file as task from temp location 2->46 48 10 other signatures 2->48 10 e8NS1CJtIRhReBU.exe 6 2->10         started        process3 file4 32 C:\Users\user\AppData\Roaming\dDmJmpd.exe, PE32 10->32 dropped 34 C:\Users\user\AppData\Local\...\tmpC97B.tmp, XML 10->34 dropped 36 C:\Users\user\...\e8NS1CJtIRhReBU.exe.log, ASCII 10->36 dropped 58 Detected unpacking (changes PE section rights) 10->58 60 Tries to detect virtualization through RDTSC time measurements 10->60 62 Injects a PE file into a foreign processes 10->62 14 e8NS1CJtIRhReBU.exe 10->14         started        17 schtasks.exe 1 10->17         started        signatures5 process6 signatures7 64 Modifies the context of a thread in another process (thread injection) 14->64 66 Maps a DLL or memory area into another process 14->66 68 Sample uses process hollowing technique 14->68 70 Queues an APC in another process (thread injection) 14->70 19 explorer.exe 14->19 injected 23 conhost.exe 17->23         started        process8 dnsIp9 38 www.shannonballcoach.com 35.197.119.180, 49762, 80 GOOGLEUS United States 19->38 40 www.gloryofeden.com 19->40 50 System process connects to network (likely due to code injection or exploit) 19->50 25 cscript.exe 19->25         started        signatures10 process11 signatures12 52 Modifies the context of a thread in another process (thread injection) 25->52 54 Maps a DLL or memory area into another process 25->54 56 Tries to detect virtualization through RDTSC time measurements 25->56 28 cmd.exe 1 25->28         started        process13 process14 30 conhost.exe 28->30         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/f755a2e09db3f63b7e9c035a488652b00ccb0678eca144db82e84e9e34345deb/
Threat name:
ByteCode-MSIL.Ransomware.TeslaCrypt
Create hunting rule
Status:
Malicious
First seen:
2020-10-21 03:32:56 UTC
AV detection:
24 of 28 (85.71%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=65k2fye5wp3dw7u4annerbsswagmwbty5squjw4c5bhj4nbulxvq._file
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
rat trojan spyware stealer family:formbook
Link:
https://tria.ge/reports/201021-zd7d52hrqx/
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Deletes itself
Formbook Payload
Formbook
Malware Config
C2 Extraction:
http://www.bfboke.com/cpi/
Unpacked files
SH256 hash:
31ce938626ccfb399fe1696710caf46d7ae9eb598b9d7d2aad719b594658469b
MD5 hash:
0aebe46040ceb011e78506d4985fe3de
SHA1 hash:
218ac1e7b14a66c604ec3042f8486bed9cd4c2c1
Link:
https://www.unpac.me/results/c09a0782-565d-458e-84d0-04fd2ea8eb5a/
SH256 hash:
245f56654472652692949449105b1a09cdcaf547254e75121e312ab1a900c35d
MD5 hash:
cc20e31de2f617d582da2b6dd914c333
SHA1 hash:
3372a8e0b7094029501fe8697662f187e85b8724
Link:
https://www.unpac.me/results/c09a0782-565d-458e-84d0-04fd2ea8eb5a/
SH256 hash:
d4fb0a8b9c22ac62d496e373a84ecfd4ff995ac7f42fd5a182c99d28b1ee8b23
MD5 hash:
088043172ff6b0898cb70ad48aebc204
SHA1 hash:
3c56969b1f938dda6d326e1d58e9f42f7266eaa0
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/c09a0782-565d-458e-84d0-04fd2ea8eb5a/
Parent samples :
680e6e46c8bed6c48e63f6dab3409bb9cd05f6642084ef8b0d03898dacc500a7
fd5aa67ff2ae6837aaf729665b08947c23a7b5cbb1f0c9fba82ebb95ddafcf24
0bfa5712201676e9439c4624fd99b8ec2bba95ccd53fb67f0a289b0a8347fc7c
f755a2e09db3f63b7e9c035a488652b00ccb0678eca144db82e84e9e34345deb
b9fa08af8ceadc9af473f443a5b8c8d0f3e40324df53c81a5da4f97ef946e160
ade5a7d8aab5f80cf5b8b97c2bdf22922ef7fafa749b2eb7f1655b0349886196
SH256 hash:
f755a2e09db3f63b7e9c035a488652b00ccb0678eca144db82e84e9e34345deb
MD5 hash:
f34019df66e0cdc84771f64542276568
SHA1 hash:
0622358fabfea0f02433c95880985b3ed1f2f224
Link:
https://www.unpac.me/results/c09a0782-565d-458e-84d0-04fd2ea8eb5a/
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.

Malspam

Formbook

rar 19b8cd5d1d53c518b2f7d3370105a8e176f17f736c43bd58a183faf7f212f082

Formbook

Executable exe f755a2e09db3f63b7e9c035a488652b00ccb0678eca144db82e84e9e34345deb

(this sample)

  
Dropped by
MD5 266d42cbc050adaf155625ee26336f16
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/73946/
  
Dropped by
SHA256 19b8cd5d1d53c518b2f7d3370105a8e176f17f736c43bd58a183faf7f212f082

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