MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a1726f588e0d03a3522f60d177448bfd7a5355133cfd725be8198c1cca68b51c. 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: 15


Intelligence 15 IOCs YARA 2 File information Comments 1

SHA256 hash: a1726f588e0d03a3522f60d177448bfd7a5355133cfd725be8198c1cca68b51c
SHA3-384 hash: e1c91fb5802f6504a104b8d6cb8d3d8171ed5b1d461e7e4af1b70a5be1fcf3a55e5899acf14e7f88c4a2963d6e222c91
SHA1 hash: 107313d5452e9aec34059572663130b6c01e8ff7
MD5 hash: 4ef6c0f9a237f7aed67b79b6e5d3e1cc
humanhash: sink-michigan-may-jig
File name:4ef6c0f9a237f7aed67b79b6e5d3e1cc
Download: download sample
Signature Formbook
File size:606'208 bytes
First seen:2022-05-24 07:27:28 UTC
Last seen:2022-05-24 09:54:36 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'742 x AgentTesla, 19'607 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 12288:3z+8+4Jb08Wvi8hcI3sBXBuiGyuxPpio9Lypitk8bxj:Dk4Jg8P8KZBIcuxBQiF
Threatray 12'428 similar samples on MalwareBazaar
TLSH T14FD402346E588D7BCA4C49BCCE9522CE02F59E119DC1E387EDA075EE1EB23B2441719B
TrID 72.5% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.4% (.EXE) Win64 Executable (generic) (10523/12/4)
6.5% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.4% (.EXE) Win32 Executable (generic) (4505/5/1)
2.0% (.EXE) OS/2 Executable (generic) (2029/13)
File icon (PE):PE icon
dhash icon 688e33f0e8e071b2 (10 x AgentTesla, 8 x Formbook, 7 x SnakeKeylogger)
Reporter zbetcheckin
Tags:32 exe FormBook

Intelligence


File Origin
# of uploads :
2
# of downloads :
301
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
formbook
ID:
1
File name:
OSERV-2543-2022-G.xlsx
Verdict:
Malicious activity
Analysis date:
2022-05-24 02:40:14 UTC
Tags:
encrypted opendir exploit CVE-2017-11882 loader formbook trojan stealer

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a custom TCP request
Launching a process
Creating a process with a hidden window
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
obfuscated packed
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:
Unknown
Detection:
malicious
Classification:
evad
Score:
88 / 100
Signature
.NET source code contains potential unpacker
Adds a directory exclusion to Windows Defender
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
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 AntiVM3
Behaviour
Behavior Graph:
behaviorgraph top1 signatures2 2 Behavior Graph ID: 632919 Sample: yux5tEO4Lr Startdate: 24/05/2022 Architecture: WINDOWS Score: 88 23 Malicious sample detected (through community Yara rule) 2->23 25 Multi AV Scanner detection for dropped file 2->25 27 Multi AV Scanner detection for submitted file 2->27 29 3 other signatures 2->29 7 yux5tEO4Lr.exe 6 2->7         started        process3 file4 19 C:\Users\user\AppData\RoamingrDoyXHpq.exe, PE32 7->19 dropped 21 C:\Users\user\AppData\Local\...\tmpAF00.tmp, XML 7->21 dropped 31 Uses schtasks.exe or at.exe to add and modify task schedules 7->31 33 Adds a directory exclusion to Windows Defender 7->33 11 powershell.exe 25 7->11         started        13 schtasks.exe 1 7->13         started        signatures5 process6 process7 15 conhost.exe 11->15         started        17 conhost.exe 13->17         started       
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Status:
Malicious
First seen:
2022-05-23 12:17:56 UTC
File Type:
PE (.Net Exe)
Extracted files:
8
AV detection:
20 of 26 (76.92%)
Threat level:
  5/5
Result
Malware family:
xloader
Score:
  10/10
Tags:
family:xloader campaign:orte loader rat
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Checks computer location settings
Xloader Payload
Xloader
Unpacked files
SH256 hash:
425290f5bab40f29549ad09434e1210df7c61ff5de2da3a65e2b43edc7a867b1
MD5 hash:
690c78ee26650a65dbc93d3fa23a59f3
SHA1 hash:
7f44b05190c723497c342424fa7872d534abc8ba
Detections:
win_formbook_g0 win_formbook_auto
SH256 hash:
fdd10fb67e6276b3d848c92d4686f56b2ecbea1d629795a241ca6306a2f62d55
MD5 hash:
f20fd214bbda1a459a3eb415eec86017
SHA1 hash:
c658f61e4f308a69a4509649439814166c655e84
SH256 hash:
260b5fd8c93db7bf86e36b587079483233020e755074798ddbc40821a4afe0eb
MD5 hash:
13346af03b105b0b8f593724d6dc0c1d
SHA1 hash:
85c3722ba3a0cbe36b4a8997a9476bc498b7b3e7
SH256 hash:
f9075506ca2999402a0ae270df4e8a7df53d21ec1e3b189ac17b66219c2d7af2
MD5 hash:
f5f8d4b4f4306c13dee54bc69c2e4606
SHA1 hash:
32d88e4a151afff46ca45e11edc54b7f90bc2e04
SH256 hash:
635cd3bda2505a12e21a3c9617e5f0eaef35e20165ed269c56f1dd5c2603cce7
MD5 hash:
d7a75de0e32051847f0d890dd934913d
SHA1 hash:
064b6837ee72d1375f492e50f05a4f6ace131bc9
SH256 hash:
a1726f588e0d03a3522f60d177448bfd7a5355133cfd725be8198c1cca68b51c
MD5 hash:
4ef6c0f9a237f7aed67b79b6e5d3e1cc
SHA1 hash:
107313d5452e9aec34059572663130b6c01e8ff7
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:pe_imphash
Rule name:Skystars_Malware_Imphash
Author:Skystars LightDefender
Description:imphash

File information


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

Web download

Formbook

Executable exe a1726f588e0d03a3522f60d177448bfd7a5355133cfd725be8198c1cca68b51c

(this sample)

  
Delivery method
Distributed via web download

Comments



Avatar
zbet commented on 2022-05-24 07:27:38 UTC

url : hxxp://13.55.233.37/data2cloud/csrss.exe