MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 16a4855bceb4df02e0478cd72972a6e7f144f2278fedb239c2cb696cf6bf7199. 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: 16a4855bceb4df02e0478cd72972a6e7f144f2278fedb239c2cb696cf6bf7199
SHA3-384 hash: 9f8162a950a71a243d9ad028c714644402254a5f98f6dc8825b0d4b2174b63f3c164a6612a01392dc7330d45e23d0d6d
SHA1 hash: 16eb06d1cdc43cbda6ea9fe537a17c1cc3e164e2
MD5 hash: 2e96c1ec66b1455de6246641ed3c4b15
humanhash: snake-undress-michigan-pasta
File name:Quotation.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:594'944 bytes
First seen:2020-10-23 06:25:37 UTC
Last seen:2020-10-23 07:13:11 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'662 x AgentTesla, 19'476 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 6144:U5LGM4cDvQ/ts9gCGBo2XN1gXCZjtZSSGOrqAtOE8pyzbnR6akBOr2QTJhGHi4M7:UwM4WQ/c2V5qAAfpyzthr2QOgMFS/SV
Threatray 4'030 similar samples on MalwareBazaar
TLSH E9C4AEB63D92AA7ECABA0A75156580D0F9762DD73B50C71CB2EA730D1D1091EE332293
Reporter abuse_ch
Tags:exe FormBook


Avatar
abuse_ch
Malspam distributing unidentified malware:

HELO: eximex.com.mx
Sending IP: 41.138.90.67
From: AMERICAN IMPORT AND EXPORT COMPANY<eizquierdo09@eximex.com.mx>
Subject: RE: AMERICA || Quote and Price List Request
Attachment: Quotation.rar (contains "Quotation.exe")

Intelligence

File Origin
# of uploads :
2
# of downloads :
81
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/74903/
Detection(s):
SecuriteInfo.com.Trojan.Siggen9.48175.26159.10085.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 the default Windows debugger (dwwin.exe)
Unauthorized injection to a recently created process
Unauthorized injection to a recently created process by context flags manipulation
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
92 / 100
Link:
https://www.joesandbox.com/analysis/507730
Signature
.NET source code contains potential unpacker
.NET source code contains very large array initializations
Allocates memory in foreign processes
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Tries to detect virtualization through RDTSC time measurements
Writes to foreign memory regions
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/16a4855bceb4df02e0478cd72972a6e7f144f2278fedb239c2cb696cf6bf7199/
Threat name:
ByteCode-MSIL.Infostealer.Stelega
Create hunting rule
Status:
Malicious
First seen:
2020-10-22 23:23:39 UTC
AV detection:
25 of 29 (86.21%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=c2sikw6owtpqfychrtlss4vg47yuj4rhr7w3eoocznuwz5v7ogmq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
1d9958a0a083b0f134bf5c777e6cee112d30f6059e3f7d301cf78e3777b7a637
Formbook
333a258f45e7a8baaab72b1539859a00bca7309a8d641490329184977090b540
Formbook
3f98571de88f8e13c4197c46d74287d2f0aef827a196ea51cb4b934c6857e04b
Formbook
6841a00603c067163259e142990659c0217ded69e2895d187fa65f9439034c7f
Formbook
7a990daaeb236dac7f6245626e92a4624c798b89e96d573abfd78d2b546af659
Formbook
82ec33dd4f26eab172d8a0fc536751d12153a3f7175351da311a7059217c670e
Formbook
914712c702b94abb26e0d1edbd54712d62a2fdb6cfbc9bd41ac8bcb84296358f
Formbook
b7859dd4f12959b0c3b717089ddde8f623d288e27d092d93b06afaf9fc4a51d8
Formbook
bd959929f72ad78adfc193a1b6f3951a41cb2fd273e97680ca41030c7c4ad271
Formbook
bfae046475f1458c460cf4eed534a48c8e769fbfc622138170c3945a4ad61a90
Formbook
+ 4'020 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/201023-pp7vj25c8j/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of WriteProcessMemory
Program crash
Drops file in Windows directory
Suspicious use of SetThreadContext
Loads dropped DLL
Executes dropped EXE
Formbook Payload
Formbook
Malware Config
C2 Extraction:
http://www.xqxsm.com/mc5/
Unpacked files
SH256 hash:
16a4855bceb4df02e0478cd72972a6e7f144f2278fedb239c2cb696cf6bf7199
MD5 hash:
2e96c1ec66b1455de6246641ed3c4b15
SHA1 hash:
16eb06d1cdc43cbda6ea9fe537a17c1cc3e164e2
Link:
https://www.unpac.me/results/3f3f1f40-6102-438d-9ee1-257d82a1f8d8/
SH256 hash:
30140c3bf5874d7d184b15513016f9de1524ae95a5efe9a1cb15bad6d6936d64
MD5 hash:
03847d82611bc6461cbb99ca768828f1
SHA1 hash:
39859a3fd3326520dfd1ed10456bb227933a8871
Link:
https://www.unpac.me/results/3f3f1f40-6102-438d-9ee1-257d82a1f8d8/
SH256 hash:
0fc854e82e40c12de91a8618ce9bc7b57c8863977ad16de5027791805cce4b7f
MD5 hash:
59a00b6fcaea45a3b59d98337f47f06a
SHA1 hash:
427c147a0b90413c92e7029e5009beacf256bf6b
Link:
https://www.unpac.me/results/3f3f1f40-6102-438d-9ee1-257d82a1f8d8/
SH256 hash:
19d9922060be89a70b76e5c0056e751f1baa5d41819235c92cf4f5d7668e1267
MD5 hash:
811864a0b06c529af894a7fec6ddbf47
SHA1 hash:
d35b82933eb06a6ec60e8cbbdb65eb6cdcaeb6d2
Link:
https://www.unpac.me/results/3f3f1f40-6102-438d-9ee1-257d82a1f8d8/
Parent samples :
afa2f55e149097f9b250142bbfd94d9d56d10649c96adb079fdb0dfdac7c6660
69e2ae11e1b5cbe120bf02301191a1cf05e87fc09b09d63bd782abbf3615d05d
0b778873c94f6bc89a40294c0e85a38ab82509260cd2a2e8b73d00c5c90e8757
7ddfa6f44a60f4b894321f6977f8121cfb371c3c61ac872c58ba61fd5ee13deb
SH256 hash:
1fd52a5183e1ef1f66b4d29f85738d5b729cf33ffa45369ff7b39551bd7e7d26
MD5 hash:
d28761c25a189606c4e354bf0795c43e
SHA1 hash:
21bcf332c6897b19443ca79dcb51ec2b96151580
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/3f3f1f40-6102-438d-9ee1-257d82a1f8d8/
Parent samples :
82ec33dd4f26eab172d8a0fc536751d12153a3f7175351da311a7059217c670e
333a258f45e7a8baaab72b1539859a00bca7309a8d641490329184977090b540
f89ea3eb5f2720e6194642d92ef8de19d90dcb0cf12c64bc42dd9aba0edfeb85
16a4855bceb4df02e0478cd72972a6e7f144f2278fedb239c2cb696cf6bf7199
SH256 hash:
ea6034bef7571dd818b594561455df8145ee0dd584466597c4d48d7b635340c2
MD5 hash:
8e6989e941a78ff5fb38a93452f32137
SHA1 hash:
36cde580f0ba9c0e0c665a4ac98301304658d93d
Link:
https://www.unpac.me/results/3f3f1f40-6102-438d-9ee1-257d82a1f8d8/
SH256 hash:
86b4c02c5beb3b3953e0dba7bca14f1123780b92668fd0de54abe9ab32e108d8
MD5 hash:
c6ea2fe99ff19d8449cb980bbf660420
SHA1 hash:
bf53b94fcc51e7a10ed85e7c738eef2299b34a6a
Link:
https://www.unpac.me/results/3f3f1f40-6102-438d-9ee1-257d82a1f8d8/
SH256 hash:
850fe7b1316b7b1ed45183850e3d51e1750914703fa9916ecf807d55aab67b1c
MD5 hash:
4b8644eba89d929297102867ae299efb
SHA1 hash:
ebfd537393a6d2fd5ef28bacfa7a9b0c6978e000
Link:
https://www.unpac.me/results/3f3f1f40-6102-438d-9ee1-257d82a1f8d8/
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

rar 6d9a26accac36403b9efe31f5a1a91361a83f0637e22d936a5696f5507af80b7

Formbook

Executable exe 16a4855bceb4df02e0478cd72972a6e7f144f2278fedb239c2cb696cf6bf7199

(this sample)

  
Dropped by
MD5 55c8fa6d0a5827ec91af6652bb35c8a9
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/74903/
  
Dropped by
SHA256 6d9a26accac36403b9efe31f5a1a91361a83f0637e22d936a5696f5507af80b7

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