MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 48d3a3e4c8e3ee8168d1f0b24f1d57ba7f7f66628f7f81ee9dab9f9f26aadfd7. 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: 13


Intelligence 13 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 48d3a3e4c8e3ee8168d1f0b24f1d57ba7f7f66628f7f81ee9dab9f9f26aadfd7
SHA3-384 hash: fcd765159ddfbb20398325f134b5794f7885c6b1971dad121f031d15c39023a6c2b450842c64d701b141e99570a0bd0b
SHA1 hash: b14ac77f076310f9303f56109a784db8b7c0930f
MD5 hash: 8aea7b16b9e7a784723ad4af7289d098
humanhash: neptune-fillet-nine-potato
File name:DOCUMENT doc.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:769'536 bytes
First seen:2021-02-07 07:39:39 UTC
Last seen:2021-02-07 09:53:58 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'742 x AgentTesla, 19'606 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 12288:VRj0cXOZi970pvsCdz47euXjuuPn6Cvia0MS403TW8wmQBoZ3Oaq1eNJK+mD9kfl:f5XOZ7Tdz47xXNnbia0FDWmQSPqw
Threatray 3'768 similar samples on MalwareBazaar
TLSH 40F47BAD326076DFC867CD36CEA85C64EBA5B4BB930BC2079063059C9A4D997DF101F2
Reporter abuse_ch
Tags:DHL exe FormBook


Avatar
abuse_ch
Malspam distributing Formbook:

HELO: mail.mailserver.vn
Sending IP: 123.30.249.122
From: DHL Express <support@dhl.com>
Subject: FYI…DOCUMENT
Attachment: DOCUMENT doc.7z (contains "DOCUMENT doc.exe")

Intelligence

File Origin
# of uploads :
2
# of downloads :
215
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
DOCUMENT doc.exe
Verdict:
Malicious activity
Analysis date:
2021-02-07 07:41:05 UTC
Tags:
trojan formbook stealer
Link:
https://app.any.run/tasks/991903c2-25a2-44e2-ba25-87c214af2a76

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/115953/
Detection(s):
SecuriteInfo.com.Trojan.GenericKD.45691966.6655.29335.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Adding an access-denied ACE
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
Enabling autorun by creating a file
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.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/601218
Signature
Initial sample is a PE file and has a suspicious name
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: Scheduled temp file as task from temp location
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
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: 349628 Sample: DOCUMENT  doc.exe Startdate: 07/02/2021 Architecture: WINDOWS Score: 100 26 Malicious sample detected (through community Yara rule) 2->26 28 Multi AV Scanner detection for dropped file 2->28 30 Sigma detected: Scheduled temp file as task from temp location 2->30 32 8 other signatures 2->32 7 DOCUMENT  doc.exe 6 2->7         started        process3 file4 20 C:\Users\user\AppData\Roaming\yKQjhI.exe, PE32 7->20 dropped 22 C:\Users\user\...\yKQjhI.exe:Zone.Identifier, ASCII 7->22 dropped 24 C:\Users\user\AppData\Local\...\tmpD8BD.tmp, XML 7->24 dropped 10 schtasks.exe 1 7->10         started        12 DOCUMENT  doc.exe 7->12         started        14 DOCUMENT  doc.exe 7->14         started        16 3 other processes 7->16 process5 process6 18 conhost.exe 10->18         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/48d3a3e4c8e3ee8168d1f0b24f1d57ba7f7f66628f7f81ee9dab9f9f26aadfd7/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2021-02-07 00:09:51 UTC
AV detection:
23 of 29 (79.31%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=jdj2hzgi4pxic2gr6cze6hkxxj7x6ztcr57yd3u5vopz6jvk37lq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
110c39365be1d4d0307080c7a264654fa63725b7e99dbc271d8dedaa10300217
Formbook
25cd952df9c74033229ec91a5da330e392390ca6120db46d9ab21d3120c9011c
Formbook
546e873e9e746eeee9cbed391ff7463ce192091ee0ff51c076291da5d836f64f
Formbook
72c822dc6059af0f57f65a9e52a509e30caefe4225367c3eec186f013134d54f
Formbook
743f890d93b9f2974c3770efbd0c9f07e0a866542d45572ccf47946673b60874
Formbook
7c8c0bb9a552f62aa1ef1e5c037ef17b2064055d15025eea8c6b2b5ccd54f10e
Formbook
970aa1ea39079684830789ad8c5c9cbf9777b65fdb44130aa8bbe4b88245e6fc
Formbook
9b9d8f51a8cf586b0380629f644676e0dce350466b06224523e01db393522339
Formbook
9e98384954932a0a9e5f921f257029bf45f721b0d279c8432c4eb5f1bf507795
Formbook
df6c946f647e06d231277e8ede37119cdfcff0ff2d519f215c14cab316b32221
Formbook
+ 3'758 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook ransomware rat spyware stealer trojan
Link:
https://tria.ge/reports/210207-zmv54k3xl2/
Behaviour
Creates scheduled task(s)
Enumerates system info in registry
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Deletes itself
Formbook Payload
Formbook
Malware Config
C2 Extraction:
http://www.brasilseo.com/bft/
Unpacked files
SH256 hash:
d24e66e58c2c85b4f7ed37422e189f85fc64cfdc4acecfca8324c6d0c57eaba7
MD5 hash:
1d3bee0d88895bc916980c8e277e950e
SHA1 hash:
912db89d8fde5a72e286810dfa5177a6f8e202e9
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/60ac0a76-65bf-47d7-95ff-952b7d91ae3a/
Parent samples :
7c8c0bb9a552f62aa1ef1e5c037ef17b2064055d15025eea8c6b2b5ccd54f10e
cddf575d340c695e513d03330965f716f8ddf17f5d2fb0929fbb78875653d8b7
72c822dc6059af0f57f65a9e52a509e30caefe4225367c3eec186f013134d54f
48d3a3e4c8e3ee8168d1f0b24f1d57ba7f7f66628f7f81ee9dab9f9f26aadfd7
c8c864915e84ba7ec98eed5ed70893bcb5b328e59751694595a71b303ea587aa
3550ff88757875f1e8566d7855eacb36fa3213a1537d4125555bc71a88d55018
726a32ca7c910d88e59d2d2364def087b00b9c869ef29926016884def6457b6b
cc768b0d5c345d446eacb21922c6561e763015cc6782fdde5a051e1d4fe56acf
2a5b157dc8c983424ebc3a69962649236e17001585de6280cf11f4d94742d28e
2dce266f65b63c927ddf95e71bb0d226eb1c8b260ba8a6965ba1352e9fa837af
SH256 hash:
40d45c73ca310afb8a4c74bde14aceb866ca4331dee1125b7f63e062834c361d
MD5 hash:
f4993f70420104bd669c90f38a0b5dc8
SHA1 hash:
dda79092be8c5d801f3c0b30c18337bf6edf6825
Link:
https://www.unpac.me/results/60ac0a76-65bf-47d7-95ff-952b7d91ae3a/
SH256 hash:
2b2bcf851c2b87033fd24c890c2a1de3642564f7cec7282982d96b8280baa849
MD5 hash:
befb0470c71d676cc891cba16088975d
SHA1 hash:
5b7143f97d1d656fd1cacf70949048c1951b639a
Link:
https://www.unpac.me/results/60ac0a76-65bf-47d7-95ff-952b7d91ae3a/
SH256 hash:
48d3a3e4c8e3ee8168d1f0b24f1d57ba7f7f66628f7f81ee9dab9f9f26aadfd7
MD5 hash:
8aea7b16b9e7a784723ad4af7289d098
SHA1 hash:
b14ac77f076310f9303f56109a784db8b7c0930f
Link:
https://www.unpac.me/results/60ac0a76-65bf-47d7-95ff-952b7d91ae3a/
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/48d3a3e4c8e3ee8168d1f0b24f1d57ba7f7f66628f7f81ee9dab9f9f26aadfd7

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_InTheFu
Create hunting rule
Author:ditekSHen
Description:Detect executables with stomped PE compilation timestamp that is greater than local current time
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

7z 27d50c1bc10eb7496ba8a41bc9f606007dd1c3e987b13dbcac74e44beba19684

Formbook

Executable exe 48d3a3e4c8e3ee8168d1f0b24f1d57ba7f7f66628f7f81ee9dab9f9f26aadfd7

(this sample)

  
Dropped by
MD5 6aecb2a6cb94154c562cad04604abbcc
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/115953/
  
Dropped by
SHA256 27d50c1bc10eb7496ba8a41bc9f606007dd1c3e987b13dbcac74e44beba19684

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