MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4b08ecf8154c2aec9f610d64a7f86adcd35c42211c0b30e1ded43f05b64a5bd2. 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: 11


Intelligence 11 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4b08ecf8154c2aec9f610d64a7f86adcd35c42211c0b30e1ded43f05b64a5bd2
SHA3-384 hash: 546adfd5cf33ae14d5c4093c11a37f97cafa3a1a425727df535083c4f4d4b93264b9ab7defc1d838d3ee7025f1b277c5
SHA1 hash: f76df4e2ebc9a520803fa262ba5e4a6208a66138
MD5 hash: 809f95f674b8c8de2d030a1bdda432ea
humanhash: six-low-colorado-finch
File name:AWB 80258723268766.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:39'936 bytes
First seen:2022-05-06 17:13:11 UTC
Last seen:2022-05-09 06:11:36 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 384:NxMSPbgVLS3tas1eQ6ulaiJMwCKTH2S3dd0hUADkadR:TMSaWLcml7MwCKt3deVDd
Threatray 15'435 similar samples on MalwareBazaar
TLSH T1FA03D72A7892961DC5D47BF869B1919366367CE10124C08FECFDBF29A933223DCC616D
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 174f4559191b1b13 (81 x AgentTesla, 68 x Formbook, 34 x SnakeKeylogger)
Reporter lowmal3
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
3
# of downloads :
267
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
AWB 80258723268766.exe
Verdict:
Malicious activity
Analysis date:
2022-05-06 17:17:28 UTC
Tags:
formbook trojan stealer
Link:
https://app.any.run/tasks/c9b661d1-9743-4f8f-969a-aa60494ae75b

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/269173/
Detection(s):
SecuriteInfo.com.W32.AIDetectNet.01.15019.28218.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Сreating synchronization primitives
DNS request
Sending a custom TCP request
Sending an HTTP GET request
Running batch commands
Creating a process with a hidden window
Launching a process
Unauthorized injection to a recently created process
Creating a file
Searching for synchronization primitives
Launching cmd.exe command interpreter
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
obfuscated packed
Link:
https://www.filescan.io/uploads/6275577036c061db6e545748/reports/c8aee11a-290e-4db7-ad34-a66049ba2538/overview
Result
Verdict:
UNKNOWN
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/0652f0cd-2735-43e0-bd2d-258c49352583
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/989244
Signature
.NET source code contains potential unpacker
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Found malware configuration
Icon mismatch, binary includes an icon from a different legit application in order to fool users
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)
Multi AV Scanner detection for submitted file
Tries to detect virtualization through RDTSC time measurements
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 621740 Sample: AWB 80258723268766.exe Startdate: 06/05/2022 Architecture: WINDOWS Score: 100 29 Found malware configuration 2->29 31 Malicious sample detected (through community Yara rule) 2->31 33 Antivirus detection for URL or domain 2->33 35 7 other signatures 2->35 7 AWB 80258723268766.exe 15 4 2->7         started        process3 dnsIp4 27 teemwokrf.cf 162.240.26.19, 443, 49736 UNIFIEDLAYER-AS-1US United States 7->27 25 C:\Users\user\...\AWB 80258723268766.exe.log, ASCII 7->25 dropped 37 Injects a PE file into a foreign processes 7->37 12 AWB 80258723268766.exe 7->12         started        15 cmd.exe 1 7->15         started        17 AWB 80258723268766.exe 7->17         started        file5 signatures6 process7 signatures8 39 Modifies the context of a thread in another process (thread injection) 12->39 41 Maps a DLL or memory area into another process 12->41 19 explorer.exe 12->19 injected 21 conhost.exe 15->21         started        23 timeout.exe 1 15->23         started        process9
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/4b08ecf8154c2aec9f610d64a7f86adcd35c42211c0b30e1ded43f05b64a5bd2/
Threat name:
ByteCode-MSIL.Trojan.XLoader
Create hunting rule
Status:
Malicious
First seen:
2022-05-06 17:14:05 UTC
File Type:
PE (.Net Exe)
Extracted files:
10
AV detection:
14 of 26 (53.85%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=jmeoz6avjqvozh3bbvskp6dk3tjvyqrbdqftbyo62q7qlnsklpja._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
00d8e033e68ffe5f290339a1e00193b0376814bc8a27c8978b9b5e0de6b2823f
Formbook
0b7b92e40a75e7c96676e65733f2babfdf0c37529c130619510b2b0b7879a697
Formbook
54d3a5ab9cf83b63a50a382b1f3fe4f2bdc03620744b9ecdee74723415fccd9d
Formbook
5d407049f81d3b75bf2d9eb7dc14662f533b1ca37d283e5ef50e001a7ac1f758
Formbook
61ee0cca6d45766ecfedcfafba7f2e57d8fc2f4ee9b42bce3e7ffe5848c071f9
Formbook
86df15ac78abc1d224a4249db72d29dcb2979fd0669a15c0d291e47648dc0c1c
Formbook
a871695c7312b67a4d3e5c3a41094a5c3824fcfa9f02ee67b2e0d21a0ba061d2
Formbook
e812adcd8f8470a1be64d92dafaebf717db1c45d58fe04a9160d88a468cf7e3c
Formbook
e8b9fa0dce20f3c8f27f9b47db399991d6c19be8b50bac6187d06f20cadd1353
Formbook
+ 15'425 additional samples on MalwareBazaar
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:xloader campaign:s59h loader rat suricata
Link:
https://tria.ge/reports/220506-vrzaysabh4/
Behaviour
Delays execution with timeout.exe
Modifies registry class
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Program crash
Suspicious use of SetThreadContext
Checks computer location settings
Xloader Payload
Xloader
suricata: ET MALWARE FormBook CnC Checkin (GET)
Unpacked files
SH256 hash:
4b08ecf8154c2aec9f610d64a7f86adcd35c42211c0b30e1ded43f05b64a5bd2
MD5 hash:
809f95f674b8c8de2d030a1bdda432ea
SHA1 hash:
f76df4e2ebc9a520803fa262ba5e4a6208a66138
Link:
https://www.unpac.me/results/c9230bb5-e8de-4343-9db5-fa99d3b84864/
Malware family:
XLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/4b08ecf8154c/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.35
Link:
https://yomi.yoroi.company/submissions/4b08ecf8154c2aec9f610d64a7f86adcd35c42211c0b30e1ded43f05b64a5bd2

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
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Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash

File information

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

Malspam

Formbook

Executable exe 4b08ecf8154c2aec9f610d64a7f86adcd35c42211c0b30e1ded43f05b64a5bd2

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/269173/

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