MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 2728b4a373b5fe9349f007facb3e2194f41b80ec41aa0eb87864bf81e7da0b8e. 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: 15


Intelligence 15 IOCs YARA File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 2728b4a373b5fe9349f007facb3e2194f41b80ec41aa0eb87864bf81e7da0b8e
SHA3-384 hash: 8f00800b65d39a141ad4c3b89d099110cb602997c53f62cbf712e9dfc154822ffba65a579dea9b4e3fb3abd8cd1f0ccb
SHA1 hash: 0c33d30e0fe0deb22bc7bb9ebb149d2fb547210b
MD5 hash: e128315b2d2ffd6e1875157e2f73cf0f
humanhash: princess-alpha-thirteen-nevada
File name:e128315b2d2ffd6e1875157e2f73cf0f.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:545'847 bytes
First seen:2022-11-25 07:40:52 UTC
Last seen:2022-11-25 09:41:08 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash ab6770b0a8635b9d92a5838920cfe770 (84 x Formbook, 30 x AgentTesla, 15 x Loki)
ssdeep 12288:3AU8NBDoAfPPrhbNzuOhI7iXGbLulrTcsS:wU8wAfn1pN4ulrPS
TLSH T1F7C4CFF33620A5BED55845B7C1438EDA9778FA7187C016063078BA3F29722C6D61BED2
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 c0e0fcfcfcf0f808 (3 x Formbook, 1 x AveMariaRAT)
Reporter abuse_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
383
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
e128315b2d2ffd6e1875157e2f73cf0f.exe
Verdict:
Malicious activity
Analysis date:
2022-11-25 07:53:39 UTC
Tags:
formbook trojan stealer
Link:
https://app.any.run/tasks/18a78133-ac6a-4582-a6f8-054cf31429d1

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/338366/
Detection(s):
SecuriteInfo.com.Trojan.Siggen19.12473.7499.15740.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file in the %temp% directory
Creating a process from a recently created file
Searching for the window
Launching a process
Сreating synchronization primitives
Launching cmd.exe command interpreter
Searching for synchronization primitives
Sending a custom TCP request
Setting browser functions hooks
Unauthorized injection to a recently created process
Unauthorized injection to a recently created process by context flags manipulation
Unauthorized injection to a system process
Unauthorized injection to a browser process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
overlay packed shell32.dll
Link:
https://www.filescan.io/uploads/638071915be128ac718ec1ce/reports/26cd7cdb-e057-4778-8abb-767164b6e866/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/ad03f3e4-0b8e-49d5-a4a9-3217ec191b50
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1120950
Signature
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 dropped file
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 virtualization through RDTSC time measurements
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 753667 Sample: CYSxFNFXEP.exe Startdate: 25/11/2022 Architecture: WINDOWS Score: 100 51 Malicious sample detected (through community Yara rule) 2->51 53 Multi AV Scanner detection for submitted file 2->53 55 Yara detected FormBook 2->55 57 3 other signatures 2->57 11 CYSxFNFXEP.exe 19 2->11         started        process3 file4 35 C:\Users\user\AppData\Local\Temp\mqmizy.exe, PE32 11->35 dropped 14 mqmizy.exe 1 11->14         started        process5 signatures6 67 Multi AV Scanner detection for dropped file 14->67 69 Maps a DLL or memory area into another process 14->69 71 Tries to detect virtualization through RDTSC time measurements 14->71 17 mqmizy.exe 14->17         started        20 conhost.exe 14->20         started        process7 signatures8 43 Modifies the context of a thread in another process (thread injection) 17->43 45 Maps a DLL or memory area into another process 17->45 47 Sample uses process hollowing technique 17->47 49 Queues an APC in another process (thread injection) 17->49 22 explorer.exe 17->22 injected process9 dnsIp10 37 irkwood138.site 31.31.198.105, 49707, 80 AS-REGRU Russian Federation 22->37 39 www.lenvera.com 22->39 41 www.irkwood138.site 22->41 59 System process connects to network (likely due to code injection or exploit) 22->59 26 WWAHost.exe 22->26         started        29 autoconv.exe 22->29         started        signatures11 process12 signatures13 61 Modifies the context of a thread in another process (thread injection) 26->61 63 Maps a DLL or memory area into another process 26->63 65 Tries to detect virtualization through RDTSC time measurements 26->65 31 cmd.exe 1 26->31         started        process14 process15 33 conhost.exe 31->33         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/2728b4a373b5fe9349f007facb3e2194f41b80ec41aa0eb87864bf81e7da0b8e/
Threat name:
Win32.Trojan.FormBook
Create hunting rule
Status:
Malicious
First seen:
2022-11-24 06:58:12 UTC
File Type:
PE (Exe)
Extracted files:
4
AV detection:
24 of 41 (58.54%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=e4ulji3twx7jgspqa75mwprbst2bxahmigva5odyms7ydz62boha._file
Verdict:
malicious
Label(s):
formbook
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cobaltstrike
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Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:sk19 rat spyware stealer trojan
Link:
https://tria.ge/reports/221125-jh4zasfa7w/
Behaviour
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
Loads dropped DLL
Executes dropped EXE
Formbook payload
Formbook
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/6c59bf0d-79aa-48ab-b74d-a21d240923db
Unpacked files
SH256 hash:
de732771e75023f249690f69881001b419aa82e0798bf74b2a4e93aa6f3269a6
MD5 hash:
8ab7de5fecc18e22d49b574f7be64592
SHA1 hash:
be04ac5fa8f1dbb6a0aafc30a28a37d0cea2a9ef
Detections:
FormBook
Create hunting rule
win_formbook_auto
Create hunting rule
win_formbook_g0
Create hunting rule
Link:
https://www.unpac.me/results/05861dfd-69e7-46ed-a819-0c875f59ce5d/
Parent samples :
53495ecf8b97a44f42431f7a069d6d993728788af54c20ce7ece289640c3e1c9
d8958a368d1b240ea4aeec66e287dc6ff1047f6e322276c8b7234a2d64aca3b1
2728b4a373b5fe9349f007facb3e2194f41b80ec41aa0eb87864bf81e7da0b8e
c9cf9f0fa6980019aa3a93b9b25ca2cf14cfad4b4afef12d43a20ece34d2093b
037d18a0489c63d5d9ba87f8ea9652c511df0787eb9d8fe361cfab7f93e03582
469162ec601c979d1e51ad44ea01fa8a4520d650773e7280918128b43691f2e4
SH256 hash:
9ab3df410b51387e6ef2d4135934b6b8a5d496bbee1686c0a800527b7dbb90e7
MD5 hash:
b9a30f1dba15fe54ed321d5d2407ddea
SHA1 hash:
9c262c900e534f0fbf108a242b4cb74ad88af9ff
Link:
https://www.unpac.me/results/05861dfd-69e7-46ed-a819-0c875f59ce5d/
SH256 hash:
2728b4a373b5fe9349f007facb3e2194f41b80ec41aa0eb87864bf81e7da0b8e
MD5 hash:
e128315b2d2ffd6e1875157e2f73cf0f
SHA1 hash:
0c33d30e0fe0deb22bc7bb9ebb149d2fb547210b
Link:
https://www.unpac.me/results/05861dfd-69e7-46ed-a819-0c875f59ce5d/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Legit
Score:
0.18
Link:
https://yomi.yoroi.company/submissions/2728b4a373b5fe9349f007facb3e2194f41b80ec41aa0eb87864bf81e7da0b8e

File information

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

Web download

Formbook

Executable exe 2728b4a373b5fe9349f007facb3e2194f41b80ec41aa0eb87864bf81e7da0b8e

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/2431515/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/338366/

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