MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b28653e85b97fd93c5d893839290ff17e6a6eb748eba11c9ee11ec9884e35410. 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: 12


Intelligence 12 IOCs YARA 3 File information Comments
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SHA256 hash: b28653e85b97fd93c5d893839290ff17e6a6eb748eba11c9ee11ec9884e35410
SHA3-384 hash: e939b1ddf8288c1ed9bea651ac91041f0943d3a68cbcdce4f8117e60b12df43476522d5e283898ba91b97b742d29ee41
SHA1 hash: 76bbe4a539af008858f83ed095bd691a2e212369
MD5 hash: 79cde38f6cc052a5b22e3db9ba8d7aed
humanhash: crazy-uniform-diet-oscar
File name:Urgentn¡ objedn vka.pdf.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:791'040 bytes
First seen:2022-04-25 12:03:38 UTC
Last seen:2022-04-25 12:32:07 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'664 x AgentTesla, 19'478 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 12288:lrgxd3Z4Z+tcTOfP2Vj3MMRqSXjXPE0q5W/6qG9Ht1aLtpyVuM:wZkTOX0MMRvclq6qGD13
Threatray 12'712 similar samples on MalwareBazaar
TLSH T11FF4DF57B605EA4DC874B9F656505D9000A56ECF81B582F228B3377829FA2C3FE503EE
TrID 47.3% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13)
15.9% (.EXE) Win64 Executable (generic) (10523/12/4)
9.9% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
7.6% (.EXE) Win16 NE executable (generic) (5038/12/1)
6.8% (.EXE) Win32 Executable (generic) (4505/5/1)
File icon (PE):PE icon
dhash icon 0f3375cccc61338f (15 x AgentTesla, 11 x Formbook, 6 x SnakeKeylogger)
Reporter GovCERT_CH
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
247
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/266330/
Detection(s):
SecuriteInfo.com.Scr.Malcodegdn30.476.7118.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Launching a process
Creating a process with a hidden window
Launching cmd.exe command interpreter
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
control.exe obfuscated packed replace.exe update.exe
Link:
https://www.filescan.io/uploads/62668e52d0223acc86f0566d/reports/9b7e1b7e-899a-4ae2-bf89-8a79cb74f92b/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/8dd9fbc7-3103-4a0d-9479-11258e9960cc
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/982372
Signature
Adds a directory exclusion to Windows Defender
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent)
Found malware configuration
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
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 dropped file
Multi AV Scanner detection for submitted file
PE file contains section with special chars
PE file has nameless sections
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Sigma detected: Bad Opsec Defaults Sacrificial Processes With Improper Arguments
Sigma detected: Suspicious Add Scheduled Task From User AppData Temp
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
Uses an obfuscated file name to hide its real file extension (double extension)
Uses schtasks.exe or at.exe to add and modify task schedules
Writes to foreign memory regions
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 614859 Sample: Urgentn#U00a1 objedn#U00a0v... Startdate: 25/04/2022 Architecture: WINDOWS Score: 100 45 www.brnguatemala.com 2->45 47 brnguatemala.com 2->47 51 Found malware configuration 2->51 53 Malicious sample detected (through community Yara rule) 2->53 55 Antivirus detection for URL or domain 2->55 57 18 other signatures 2->57 11 Urgentn#U00a1 objedn#U00a0vka.pdf.exe 7 2->11         started        signatures3 process4 file5 37 C:\Users\user\AppData\...\tSlUIbmgxy.exe, PE32 11->37 dropped 39 C:\Users\...\tSlUIbmgxy.exe:Zone.Identifier, ASCII 11->39 dropped 41 C:\Users\user\AppData\Local\...\tmp7156.tmp, XML 11->41 dropped 43 Urgentn#U00a1 obje...00a0vka.pdf.exe.log, ASCII 11->43 dropped 61 Writes to foreign memory regions 11->61 63 Adds a directory exclusion to Windows Defender 11->63 65 Injects a PE file into a foreign processes 11->65 15 RegSvcs.exe 11->15         started        18 powershell.exe 25 11->18         started        20 schtasks.exe 1 11->20         started        signatures6 process7 signatures8 73 Modifies the context of a thread in another process (thread injection) 15->73 75 Maps a DLL or memory area into another process 15->75 77 Sample uses process hollowing technique 15->77 79 2 other signatures 15->79 22 explorer.exe 15->22 injected 26 conhost.exe 18->26         started        28 conhost.exe 20->28         started        process9 dnsIp10 49 www.cardealsherein.com 185.53.179.91, 49771, 80 TEAMINTERNET-ASDE Germany 22->49 59 System process connects to network (likely due to code injection or exploit) 22->59 30 msdt.exe 22->30         started        signatures11 process12 signatures13 67 Modifies the context of a thread in another process (thread injection) 30->67 69 Maps a DLL or memory area into another process 30->69 71 Tries to detect virtualization through RDTSC time measurements 30->71 33 cmd.exe 1 30->33         started        process14 process15 35 conhost.exe 33->35         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/b28653e85b97fd93c5d893839290ff17e6a6eb748eba11c9ee11ec9884e35410/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2022-04-25 10:14:44 UTC
File Type:
PE (.Net Exe)
Extracted files:
18
AV detection:
20 of 25 (80.00%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=wkdfh2c3s76zhroysobzfeh7c7tkn23ur25bdspochwjrbhdkqia._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
0119c8252290ab1c092ee4ab1d9cd18502909207bf3368491b1448a8f7e14513
Formbook
0b547b6fbd2328c64aab9806e3617ec953098db3af45a2546697d9ca7ee838c9
Formbook
499fb85e548a134abdf18b6a9d149b9c4f2bf9b0f534dd4c86e600180fb19bf9
Formbook
4d5d803e91d5a07b32a19a06a8f722d3d4aead462bb2cab23470f2c2ad79b71a
Formbook
5b8124423be6af37ad74816af0d1df049bc6d740117e934947b067d5fa61eb0b
Formbook
7b3be400d99b473afc9f2bdf46477b61736a71db20cd9d1137b0cab4d4aaeff9
Formbook
90c16547e527be04c7fbea515f8dcea9f00353bf4394ecd45f891ab07085b575
Formbook
e51d07f5a5a73b65e0ddd7f2b94fa87a3fede71fbb4e4b35c57b9fc56dd198ee
Formbook
ffb2ebccfae79f8c1d5911d41e549a8f876a10708053a4f3a3dbc2ec0e04be48
Formbook
+ 12'702 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:d2g7 rat spyware stealer trojan
Link:
https://tria.ge/reports/220425-n8kqkacaa6/
Behaviour
Creates scheduled task(s)
Modifies registry class
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Checks computer location settings
Formbook Payload
Formbook
Unpacked files
SH256 hash:
55387d8366303a794ee0f3d71a04617f0f1ee9c67a55c913f9b6b870efa123b8
MD5 hash:
c7a79737aa6d4fadfac3b251d48773c4
SHA1 hash:
1afbe9593ed76bd2edb0e0dba4512eb3c8d43fb3
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/c50af26d-43e1-4ec9-94de-be937de18707/
Parent samples :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 hash:
09cd3bc420c8982190990a9673b58c3ab01e933dff0881f1e521d3316f1b9a6b
MD5 hash:
6933707e111286a128ad0f7fa298153f
SHA1 hash:
d1121c8bed634e9684727e8c0aad3f597b0749ad
Link:
https://www.unpac.me/results/c50af26d-43e1-4ec9-94de-be937de18707/
SH256 hash:
fbf05cc14b7bba9afc78a8269c696e9a5b1631f50d5c05a6e2cfa7adbcb26356
MD5 hash:
2fd9ea241e3892053bfa8207192a3095
SHA1 hash:
d0a6218bd839ee220626feb6e9954c4b3b6da3aa
Link:
https://www.unpac.me/results/c50af26d-43e1-4ec9-94de-be937de18707/
SH256 hash:
9a29b0288bb73ea746fa5445c2906b4b68bb1658e66f63ce4b6ceaa33dfbc4bd
MD5 hash:
fa4b1103443adf8932fe9417d0e8a15f
SHA1 hash:
cf7a5d9cb0fcb259050c128367e55a4c639c45a8
Link:
https://www.unpac.me/results/c50af26d-43e1-4ec9-94de-be937de18707/
SH256 hash:
b28653e85b97fd93c5d893839290ff17e6a6eb748eba11c9ee11ec9884e35410
MD5 hash:
79cde38f6cc052a5b22e3db9ba8d7aed
SHA1 hash:
76bbe4a539af008858f83ed095bd691a2e212369
Link:
https://www.unpac.me/results/c50af26d-43e1-4ec9-94de-be937de18707/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/b28653e85b97/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/b28653e85b97fd93c5d893839290ff17e6a6eb748eba11c9ee11ec9884e35410

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:pdb2
Create hunting rule
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.

Malspam

Formbook

Executable exe b28653e85b97fd93c5d893839290ff17e6a6eb748eba11c9ee11ec9884e35410

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/266330/

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