MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 98b28d84bb0b1479d10646a5d34d02f9e25718adc285634fb11d407188089e1d. 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 1
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 98b28d84bb0b1479d10646a5d34d02f9e25718adc285634fb11d407188089e1d
SHA3-384 hash: e7a91178c7c3d124f1d47d848b34daeeda3169304516b87a0bc9b1cc497418a94b093672d467ddca0801924395c80b17
SHA1 hash: fe276014aaa8631e6ffdd75de71baffeb316dfda
MD5 hash: 9efbf31695e3cd8c265a34be65cae09b
humanhash: zebra-fruit-johnny-north
File name:9efbf31695e3cd8c265a34be65cae09b
Download: download sample
Signature Formbook
Create hunting rule
File size:620'032 bytes
First seen:2022-05-25 14:42:52 UTC
Last seen:2022-05-25 15:47:13 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:CuEurem0GZFFOsUl9PXK7lYf0b17W/R9LA+wtl8meEWpvNW754aZtGG:CuEu+90J29Tu8meRpZIGG
Threatray 16'325 similar samples on MalwareBazaar
TLSH T11DD423485778432AD66A8BF070B4EA3507F1B605A532E35EDF0A14C72CF23459EB2B5B
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 b3b3333969693b3b (69 x Formbook, 63 x AgentTesla, 26 x Loki)
Reporter zbetcheckin
Tags:32 exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
545
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
9efbf31695e3cd8c265a34be65cae09b
Verdict:
Malicious activity
Analysis date:
2022-05-25 16:27:03 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/54b072d5-4f57-4711-a3cf-0a19046211d1

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/274548/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a custom TCP request
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
fareit formbook obfuscated packed update.exe
Link:
https://www.filescan.io/uploads/628e407a054dcf0ecaecf41c/reports/5bc117c0-7a8d-4544-95d0-253a05874b93/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.
Malware family:
Formbook
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/c27f0a5d-1e66-484b-a3ff-c5bf7bc80d89
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1001645
Signature
.NET source code contains potential unpacker
C2 URLs / IPs found in malware configuration
Found malware configuration
Injects a PE file into a foreign processes
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
Self deletion via cmd delete
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
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 634143 Sample: sBojf93cul Startdate: 25/05/2022 Architecture: WINDOWS Score: 100 31 www.matiany.com 2->31 33 matiany.com 2->33 37 Found malware configuration 2->37 39 Malicious sample detected (through community Yara rule) 2->39 41 Multi AV Scanner detection for submitted file 2->41 43 6 other signatures 2->43 11 sBojf93cul.exe 3 2->11         started        signatures3 process4 file5 29 C:\Users\user\AppData\...\sBojf93cul.exe.log, ASCII 11->29 dropped 55 Tries to detect virtualization through RDTSC time measurements 11->55 57 Injects a PE file into a foreign processes 11->57 15 sBojf93cul.exe 11->15         started        signatures6 process7 signatures8 59 Modifies the context of a thread in another process (thread injection) 15->59 61 Maps a DLL or memory area into another process 15->61 63 Sample uses process hollowing technique 15->63 65 Queues an APC in another process (thread injection) 15->65 18 explorer.exe 15->18 injected process9 dnsIp10 35 www.szzhxzs.com 172.120.91.234, 49795, 80 EGIHOSTINGUS United States 18->35 45 System process connects to network (likely due to code injection or exploit) 18->45 22 cscript.exe 18->22         started        signatures11 process12 signatures13 47 Self deletion via cmd delete 22->47 49 Modifies the context of a thread in another process (thread injection) 22->49 51 Maps a DLL or memory area into another process 22->51 53 Tries to detect virtualization through RDTSC time measurements 22->53 25 cmd.exe 1 22->25         started        process14 process15 27 conhost.exe 25->27         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/98b28d84bb0b1479d10646a5d34d02f9e25718adc285634fb11d407188089e1d/
Threat name:
ByteCode-MSIL.Trojan.FormBook
Create hunting rule
Status:
Malicious
First seen:
2022-05-25 13:20:50 UTC
File Type:
PE (.Net Exe)
Extracted files:
8
AV detection:
16 of 26 (61.54%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=tczi3bf3bmkhtuigi2s5gtic7hrfogfnykcwgt5rdvahdcaityoq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
05a096d0b32ba6a4ef81bdf3794aaaffbae69c71c7bbe9506db9ebe30e168e4e
Formbook
222ad93c9537bc72a00d01aaeab70acaea61210fb0de3967d671920848c87b04
Formbook
38417f3b43b2e2dbc8cd0ddd685198a5b2db8f268a36fdf30322c7acea5b057b
Formbook
44fcbf4b6194a2835b5193606c9ad3ac9aa62b3fe6f724201f8b8edfd3b24076
Formbook
5d0afd545a7691aa9db609487e20297ce8b7e9c5428599fb323f53ad28fba089
Formbook
5e6a07d2d47e34283f9467d1b4a03e8021a6d5225b93d88096b269fd6f7790da
Formbook
ce7d3bdad0d089583e735635f3d475e11dde86d0ad1c76d8735085a9ec031d96
Formbook
d34ad18fe8d593f0cf5cba1fc1727d59ff6ecbf07d9537be57c2d9e78e854c8c
Formbook
db1a111df60b02e8045e9ddd1a0134346f59c66148e2e00ed93ae8033eac5a9a
Formbook
e677af4720b0b6402c8b677265968541dfa6b57f12578f7701ac840bd1f0889f
Formbook
+ 16'315 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:e63z rat spyware stealer trojan
Link:
https://tria.ge/reports/220525-r3kedsfcar/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Formbook Payload
Formbook
Unpacked files
SH256 hash:
0ffc3a887eb8ede09eb9a2e2c785bf31373d46649e24d84a362bd9b145cba6c0
MD5 hash:
59dffdfca42bc5e89f2fa2bea4655075
SHA1 hash:
d165c575d025f27bbd617acee66d3023da68e6b2
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/3bdaa50b-95a6-4d27-89fe-bb33049c1e7d/
Parent samples :
98b28d84bb0b1479d10646a5d34d02f9e25718adc285634fb11d407188089e1d
3d4f0f70fc18a3b464a938ffb32fb693329993738991b2fa2e2f1a3faf84e7b8
6a1304d1c9897938d2217e62aee0f4a79af9535dce964f0661e67139948a380e
cec1e3475be480dcec7b887edfab3389da89c696c99fc99927682f3bc99e208b
09c88bcf7ebad851bf96be9d453e25447ce6136b25ccc69f908c436f3e3cfed0
bef4d2b112f31aa4e400f8a578eb87817ea1acda68d219f7c5d4387ceaf432cf
01b796e6344f0aed01a755666640702444b02776a00bba9797d208730f948ac8
SH256 hash:
c720d8d87e5744ef459c160ae3ae85984519c5cee89d4acd3d4156f929ebcca2
MD5 hash:
86f922d84e1b89f646bc23cb3d878a9c
SHA1 hash:
b61f4401c1a144d704988cf4e55dd9a71f8d8263
Link:
https://www.unpac.me/results/3bdaa50b-95a6-4d27-89fe-bb33049c1e7d/
SH256 hash:
0283941f1f7ae72f88bb3044addc3f4274549c3fd771612ec3df95c80b708c9e
MD5 hash:
abcf7824b477074db7ac154a80d1e329
SHA1 hash:
9c6982829bff318776560846de7bcc39d3c16f7f
Link:
https://www.unpac.me/results/3bdaa50b-95a6-4d27-89fe-bb33049c1e7d/
SH256 hash:
eb781c6c22336ce612d97e0c95e19eaae279d820ceb353d6c3fec92c1dbe6630
MD5 hash:
66729714e4ebf022ffb3ead487553043
SHA1 hash:
57990cc50188d6002df52f8d2e13c09e1f2e4233
Link:
https://www.unpac.me/results/3bdaa50b-95a6-4d27-89fe-bb33049c1e7d/
SH256 hash:
56cfac726d8d95d8eef9adf77ff39e25b0c90a619286daeee30c12092113b1b9
MD5 hash:
9a90bae88b392fb90649ee48e9c1bc88
SHA1 hash:
0e49e39460173e31eff302c0653327a8c9569770
Link:
https://www.unpac.me/results/3bdaa50b-95a6-4d27-89fe-bb33049c1e7d/
SH256 hash:
98b28d84bb0b1479d10646a5d34d02f9e25718adc285634fb11d407188089e1d
MD5 hash:
9efbf31695e3cd8c265a34be65cae09b
SHA1 hash:
fe276014aaa8631e6ffdd75de71baffeb316dfda
Link:
https://www.unpac.me/results/3bdaa50b-95a6-4d27-89fe-bb33049c1e7d/
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/98b28d84bb0b1479d10646a5d34d02f9e25718adc285634fb11d407188089e1d

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 98b28d84bb0b1479d10646a5d34d02f9e25718adc285634fb11d407188089e1d

(this sample)

  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/2210854/
Cape
Cape
https://www.capesandbox.com/analysis/274548/

Comments


Avatar
zbet commented on 2022-05-25 14:43:02 UTC

url : hxxp://37.0.11.227/files/emezx.exe