MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4de8bd2b215ae3de7dd2af33a00b438abdb097722dbcb7b9771a495361554222. 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
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SHA256 hash: 4de8bd2b215ae3de7dd2af33a00b438abdb097722dbcb7b9771a495361554222
SHA3-384 hash: 1d83efc98cdb760dc1fc4695e598b273ade4f06348953d4613aafd2a9a5a270ac776502fddcb091853418bb31137117a
SHA1 hash: bab1c44e5da3eccd4b9f792472cbdc9d9a47b448
MD5 hash: b447cd08e50d64d8dfca252b98e4b99a
humanhash: lake-fruit-lemon-cat
File name:Revise Invoice.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:578'560 bytes
First seen:2022-08-17 21:32:36 UTC
Last seen:2022-09-06 03:57:44 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'752 x AgentTesla, 19'658 x Formbook, 12'248 x SnakeKeylogger)
ssdeep 12288:8a11R/5PL+/SkwMQKk2TSWKLc8s0EkzvEZOyToeLWHIPSoZgzxm0TE56PdYlOwgt:xP5kwbKk2GWsEcuOU6YrgzxHEgOu
TLSH T1C4C41232376D2B2BDBAE68F901281A0857FC712654A5E7ED6DC276C525FEBC006132C7
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)
Reporter GovCERT_CH
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
278
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Revise Invoice.exe
Verdict:
Malicious activity
Analysis date:
2022-08-17 21:34:46 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/9532bd06-d39a-4d12-9820-060df1877096

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/299398/
Detection(s):
SecuriteInfo.com.W32.AIDetectNet.01.12627.30770.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a custom TCP request
Сreating synchronization primitives
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Adding an access-denied ACE
Creating a process from a recently created file
Creating a process with a hidden window
Launching a process
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/62fd5e918adad7d7739c5e5c/reports/82f60167-9f7f-4871-b3d4-db36bb4b3b94/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/f25c0726-a77b-408b-9067-ce8bbedb34d5
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1053380
Signature
.NET source code contains potential unpacker
Adds a directory exclusion to Windows Defender
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
C2 URLs / IPs found in 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)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
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
Writes to foreign memory regions
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 685897 Sample: Revise Invoice.exe Startdate: 17/08/2022 Architecture: WINDOWS Score: 100 35 Malicious sample detected (through community Yara rule) 2->35 37 Antivirus detection for dropped file 2->37 39 Antivirus / Scanner detection for submitted sample 2->39 41 12 other signatures 2->41 8 Revise Invoice.exe 7 2->8         started        process3 file4 27 C:\Users\user\AppData\Roaming\ZwQlYeQl.exe, PE32 8->27 dropped 29 C:\Users\...\ZwQlYeQl.exe:Zone.Identifier, ASCII 8->29 dropped 31 C:\Users\user\AppData\Local\...\tmp3DC7.tmp, XML 8->31 dropped 33 C:\Users\user\...\Revise Invoice.exe.log, ASCII 8->33 dropped 43 Writes to foreign memory regions 8->43 45 Adds a directory exclusion to Windows Defender 8->45 47 Injects a PE file into a foreign processes 8->47 12 RegSvcs.exe 8->12         started        15 powershell.exe 21 8->15         started        17 schtasks.exe 1 8->17         started        signatures5 process6 signatures7 49 Modifies the context of a thread in another process (thread injection) 12->49 51 Maps a DLL or memory area into another process 12->51 53 Sample uses process hollowing technique 12->53 55 Queues an APC in another process (thread injection) 12->55 19 explorer.exe 12->19 injected 21 conhost.exe 15->21         started        23 conhost.exe 17->23         started        process8 process9 25 cmmon32.exe 19->25         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/4de8bd2b215ae3de7dd2af33a00b438abdb097722dbcb7b9771a495361554222/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2022-08-17 13:22:06 UTC
File Type:
PE (.Net Exe)
Extracted files:
9
AV detection:
23 of 26 (88.46%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=jxul2kzbllr547osv4z2ac2drk63bf3sfw6lpolxdjevgykviira._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Result
Malware family:
n/a
Score:
  7/10
Tags:
n/a
Link:
https://tria.ge/reports/220817-1d6e1agab2/
Behaviour
Creates scheduled task(s)
Enumerates system info in registry
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Checks computer location settings
Unpacked files
SH256 hash:
8bf695133d102ff2bacbbeeb096a68f018399cea580173cf2d5fc2b1cafee833
MD5 hash:
71207e5078ee1432740dd3020941125e
SHA1 hash:
316eec4f3c7ba270c16f7ea871f2137488193a51
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/1a7f6d4f-91fe-4523-87b6-e2122cd5b5f3/
Parent samples :
a7f2e03d77484fcb0bc2796afcca6f80ef371a80589a7f8b5713edbd03460e35
4de8bd2b215ae3de7dd2af33a00b438abdb097722dbcb7b9771a495361554222
65365eacd51c7064c0845a99df19605965607c70324e993d0f886ccbf3fe3635
a30502cad1cb62fe2961ca0d91d5bac2c35a0b942fa3094142068c78e307291b
250ae9c16a36aa8da79addebcfdb5a1b5d3ff7a24086fd558c58214e4270bc04
012686b058f5eb3ce0c150b8509e6594323f6bfaee67efcdb8bc4a10283ce2ee
SH256 hash:
9466854bd4b3c9126ba2bbd4d5668f7a72800f962f6cf960b58cb769de22821e
MD5 hash:
5cf312d28231ce377bc6505296c9497b
SHA1 hash:
fa1a8052366d2919225304e38b4630158a9e4c34
Link:
https://www.unpac.me/results/1a7f6d4f-91fe-4523-87b6-e2122cd5b5f3/
SH256 hash:
551ef0181260a5ab5728a618c2e86443753aaeb425e6c3b1346dfb0a661c73af
MD5 hash:
3c7205139e6aabd7de040b15021c24ed
SHA1 hash:
e4c66e4ca1bb3b5488d7c4ba7fddc8cac118955f
Link:
https://www.unpac.me/results/1a7f6d4f-91fe-4523-87b6-e2122cd5b5f3/
SH256 hash:
cb1c390e3f31ed00c942a420a9abf4206dbbcdb644def8f00493f269de78be92
MD5 hash:
8db6400d5ce2c49b23f7ce0ce622d485
SHA1 hash:
a11ed21bf958d9c927b861c5154432fa42add22b
Link:
https://www.unpac.me/results/1a7f6d4f-91fe-4523-87b6-e2122cd5b5f3/
SH256 hash:
9b4aee132a0228378d66a57fda3a2030952309ef74cf2db724ac916b04d8c034
MD5 hash:
93c6391d23c1aa1ed66fb13f82f2ee31
SHA1 hash:
220098c3047c32b51ae13a5cc1e9beeef3da6e18
Link:
https://www.unpac.me/results/1a7f6d4f-91fe-4523-87b6-e2122cd5b5f3/
SH256 hash:
4de8bd2b215ae3de7dd2af33a00b438abdb097722dbcb7b9771a495361554222
MD5 hash:
b447cd08e50d64d8dfca252b98e4b99a
SHA1 hash:
bab1c44e5da3eccd4b9f792472cbdc9d9a47b448
Link:
https://www.unpac.me/results/1a7f6d4f-91fe-4523-87b6-e2122cd5b5f3/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/4de8bd2b215a/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/4de8bd2b215ae3de7dd2af33a00b438abdb097722dbcb7b9771a495361554222

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.

Malspam

Formbook

Executable exe 4de8bd2b215ae3de7dd2af33a00b438abdb097722dbcb7b9771a495361554222

(this sample)

  
Dropped by
Formbook
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/299398/

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