MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b2834803a56b0fcfa98844491234dff7ffb74afd7e3adf821446f8c18955b585. 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: 17


Intelligence 17 IOCs YARA 2 File information Comments 1
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b2834803a56b0fcfa98844491234dff7ffb74afd7e3adf821446f8c18955b585
SHA3-384 hash: 0b00ef81880b5833dfb3deea9ebfd6a4495ad78b9bc8fb882bb112740f974fc8c4379b19a69f0433d23432f56b13978f
SHA1 hash: c40de11c87845d927de91cca08544abb2e65453f
MD5 hash: 164ae6a2069313f98ed44eae9bb7582f
humanhash: lactose-carpet-undress-may
File name:164ae6a2069313f98ed44eae9bb7582f
Download: download sample
Signature Formbook
Create hunting rule
File size:690'176 bytes
First seen:2022-06-28 06:18:25 UTC
Last seen:2022-06-28 13:09:26 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:t9G5xNS0DS35cZb/pZq0MKgT2RGbtzae8pndHKElOGQITW2rd1UL2xSN+zl:3G5PS0+QbpzMdqkeLZ1BltQITrrM4
TLSH T176E4D1193AE84F46E17DF3B961780110577AA916391BE3694DC064FE0EF73908A0BF5B
TrID 64.2% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
11.5% (.SCR) Windows screen saver (13101/52/3)
9.2% (.EXE) Win64 Executable (generic) (10523/12/4)
5.7% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
3.9% (.EXE) Win32 Executable (generic) (4505/5/1)
Reporter zbetcheckin
Tags:32 exe FormBook

Intelligence

File Origin
# of uploads :
3
# of downloads :
224
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
FWD_ Re_ HANDU CLIENT ORDER_ MARCH ORDER
Verdict:
Malicious activity
Analysis date:
2022-06-28 06:09:27 UTC
Tags:
exploit CVE-2017-11882 loader formbook trojan stealer
Link:
https://app.any.run/tasks/42fec7b0-0f38-4c07-bc00-059b0a14ee0a

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/283776/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Unauthorized injection to a recently created process
Creating a file
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/62ba9d66197c837506caa0b2/reports/3bdf5314-91f5-4a92-8df5-3a8a9e2daf91/overview
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.
Malware family:
Formbook
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/2fe25e3c-30a2-4483-a78b-287f68cf4906
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1020918
Signature
.NET source code contains potential unpacker
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
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 submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
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
Yara detected AntiVM3
Yara detected FormBook
Yara detected Generic Downloader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 653410 Sample: XfWRwWMvlB Startdate: 28/06/2022 Architecture: WINDOWS Score: 100 31 www.chiswickstudios.com 2->31 35 Malicious sample detected (through community Yara rule) 2->35 37 Antivirus detection for URL or domain 2->37 39 Multi AV Scanner detection for submitted file 2->39 41 8 other signatures 2->41 11 XfWRwWMvlB.exe 3 2->11         started        signatures3 process4 file5 29 C:\Users\user\AppData\...\XfWRwWMvlB.exe.log, ASCII 11->29 dropped 51 Tries to detect virtualization through RDTSC time measurements 11->51 15 XfWRwWMvlB.exe 11->15         started        signatures6 process7 signatures8 53 Modifies the context of a thread in another process (thread injection) 15->53 55 Maps a DLL or memory area into another process 15->55 57 Sample uses process hollowing technique 15->57 59 Queues an APC in another process (thread injection) 15->59 18 explorer.exe 15->18 injected process9 dnsIp10 33 www.massimusdescanso.com 18->33 43 System process connects to network (likely due to code injection or exploit) 18->43 22 control.exe 18->22         started        signatures11 process12 signatures13 45 Modifies the context of a thread in another process (thread injection) 22->45 47 Maps a DLL or memory area into another process 22->47 49 Tries to detect virtualization through RDTSC time measurements 22->49 25 cmd.exe 1 22->25         started        process14 process15 27 conhost.exe 25->27         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/b2834803a56b0fcfa98844491234dff7ffb74afd7e3adf821446f8c18955b585/
Threat name:
ByteCode-MSIL.Trojan.FormBook
Create hunting rule
Status:
Malicious
First seen:
2022-06-27 22:58:04 UTC
File Type:
PE (.Net Exe)
Extracted files:
13
AV detection:
22 of 26 (84.62%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=wkbuqa5fnmh47kmiirereng76773osx5py5n7aqui34mdckvwwcq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:m56u rat spyware stealer trojan
Link:
https://tria.ge/reports/220628-g26k5afeek/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Formbook Payload
Formbook
Unpacked files
SH256 hash:
7ff037f525d6d0dd25c1c78529dd5da8c0e847f1d234d34911de2e88015386e0
MD5 hash:
a1e77401be14590790a9523f9c71f522
SHA1 hash:
07c90c592b106c9a1adcc4d205da072bc4ff0a9c
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
FormBook
Create hunting rule
Link:
https://www.unpac.me/results/f9759093-f8db-4e1e-907f-c76d072934e9/
Parent samples :
8b44615acd4fd89243a9ec2bd8eaeef1c13eac7b28136874d02614d8c7e68a57
85a10f9329744d8c7ed58797d3a38beea00541b6fd45a51fe1e6887d4caf411f
8a3206a8bbf5056d7cb774be843c2a067aa8643e44c58c63e3e9cb65ce0f3fc4
2620668118d8ade45d0de6c49ea4c2af6213ff0e7d0b312b8ce8e080eba6c32b
b2834803a56b0fcfa98844491234dff7ffb74afd7e3adf821446f8c18955b585
7952c76d1d86927893a2ef8ca0a23bb1b45af38565f2ad9cea09a942bd5059f8
712d9e2373914cd9231c6c55a5d919efa6df53194b2c06b03695501dde071760
696ea6f69112d4d80b34a8dc589c16db71217fc6aa75567cb081bd02c56612b2
SH256 hash:
0aa8ea56f670ef5041fe87ee1a27b6623c2cf7996ed489214aa076996ca40cac
MD5 hash:
faf84cab64260654988db2f9157f8f89
SHA1 hash:
e1e6ebeaf252c78e74c1355cdefc6a2c52cfab70
Link:
https://www.unpac.me/results/f9759093-f8db-4e1e-907f-c76d072934e9/
SH256 hash:
0cb6aef1fa57d11408e47ae071485ef8f48c2982997b8d74b47a4151d85b978c
MD5 hash:
843aa6edf83bff7b61c6a5369ef41e95
SHA1 hash:
d1bfeec8eaac9a1dacf2f7062ce964d8e7d77085
Link:
https://www.unpac.me/results/f9759093-f8db-4e1e-907f-c76d072934e9/
SH256 hash:
5039a3eafd502cdfa7289293e4cafa49cec5231fc7ba017912ce7cf74c0ee88a
MD5 hash:
e258fea296472455579093b4f561914c
SHA1 hash:
b8c13b37a34eaaa675d089d4ad88e16cafa3b51d
Link:
https://www.unpac.me/results/f9759093-f8db-4e1e-907f-c76d072934e9/
SH256 hash:
a8d84f955413935122d69a9b02e2e52543409d5f07ba1c5400d8c8907580faf2
MD5 hash:
a4c62cc62986b36f099678e6f56ec316
SHA1 hash:
44351395047063ae2cbdf7eddaff9f24498639b8
Link:
https://www.unpac.me/results/f9759093-f8db-4e1e-907f-c76d072934e9/
SH256 hash:
b2834803a56b0fcfa98844491234dff7ffb74afd7e3adf821446f8c18955b585
MD5 hash:
164ae6a2069313f98ed44eae9bb7582f
SHA1 hash:
c40de11c87845d927de91cca08544abb2e65453f
Link:
https://www.unpac.me/results/f9759093-f8db-4e1e-907f-c76d072934e9/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/b2834803a56b/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.65
Link:
https://yomi.yoroi.company/submissions/b2834803a56b0fcfa98844491234dff7ffb74afd7e3adf821446f8c18955b585

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
Create hunting rule
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.

Web download

Formbook

Executable exe b2834803a56b0fcfa98844491234dff7ffb74afd7e3adf821446f8c18955b585

(this sample)

  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/2251461/
Cape
Cape
https://www.capesandbox.com/analysis/283776/

Comments


Avatar
zbet commented on 2022-06-28 06:18:28 UTC

url : hxxp://85.202.169.21/obizx.exe