MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a9abf5bb4d461231fec3b318a772380e393aefd63c4dd049b701bd1e4b4f437c. 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 4 File information Comments
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SHA256 hash: a9abf5bb4d461231fec3b318a772380e393aefd63c4dd049b701bd1e4b4f437c
SHA3-384 hash: d0a8bda7b24d162d57166c644f56c4960338de734f7e72f6855576a5eb0a3fdf4549d36b5ea6f7b422147878542c9ca8
SHA1 hash: daec908192a880bb9390128a2333738cb9326c52
MD5 hash: baf48f38931999c44f50756f556d8a90
humanhash: indigo-lake-spring-cup
File name:202207 Teklif.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:534'016 bytes
First seen:2022-07-04 11:19:23 UTC
Last seen:2022-07-04 12:01:32 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'657 x AgentTesla, 19'468 x Formbook, 12'206 x SnakeKeylogger)
ssdeep 12288:1gi7hZMJCD1GXJJvC1HRJNDdV1mvBLLaftqIcRZp:1ZhfDwXjvoHRJN1mvt6tcRZp
TLSH T13EB42301E01612BBE9B265334D785BD989766B20D3ECBEE40889C15DCF913F2C29B726
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 b2a89c96a2cada72 (2'283 x Formbook, 981 x Loki, 803 x AgentTesla)
Reporter lowmal3
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
258
Origin country :
n/a
Vendor Threat Intelligence
Detection(s):
SecuriteInfo.com.Variant.Bulz.554061.27907.13843.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Launching a process
Creating a file
Searching for synchronization primitives
Сreating synchronization primitives
Launching cmd.exe command interpreter
Sending a custom TCP request
Setting browser functions hooks
Unauthorized injection to a system process
Unauthorized injection to a browser process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
formbook packed
Link:
https://www.filescan.io/uploads/62c2cd203298ebd78905bccb/reports/7d7f7ac4-48d2-4c1a-91c1-726586bc9bb2/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
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Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/587ea8ba-6269-4d93-bf7f-ea7e3abf2ea0
Result
Threat name:
FormBook
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Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1024124
Signature
.NET source code contains potential unpacker
.NET source code contains very large array initializations
Allocates memory in foreign processes
Antivirus / Scanner detection for submitted sample
C2 URLs / IPs found in malware configuration
Injects a PE file into a foreign processes
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 virtualization through RDTSC time measurements
Writes to foreign memory regions
Yara detected Costura Assembly Loader
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 656615 Sample: 202207 Teklif.exe Startdate: 04/07/2022 Architecture: WINDOWS Score: 100 38 Malicious sample detected (through community Yara rule) 2->38 40 Antivirus / Scanner detection for submitted sample 2->40 42 Multi AV Scanner detection for submitted file 2->42 44 7 other signatures 2->44 10 202207 Teklif.exe 1 2->10         started        process3 file4 32 C:\Users\user\...\202207 Teklif.exe.log, ASCII 10->32 dropped 54 Writes to foreign memory regions 10->54 56 Allocates memory in foreign processes 10->56 58 Injects a PE file into a foreign processes 10->58 14 InstallUtil.exe 10->14         started        17 InstallUtil.exe 10->17         started        19 InstallUtil.exe 10->19         started        signatures5 process6 signatures7 60 Modifies the context of a thread in another process (thread injection) 14->60 62 Maps a DLL or memory area into another process 14->62 64 Sample uses process hollowing technique 14->64 66 Queues an APC in another process (thread injection) 14->66 21 explorer.exe 14->21 injected 68 Tries to detect virtualization through RDTSC time measurements 17->68 process8 dnsIp9 34 www.jullianben.com 217.160.0.214, 49773, 80 ONEANDONE-ASBrauerstrasse48DE Germany 21->34 36 www.gohostio.com 21->36 46 System process connects to network (likely due to code injection or exploit) 21->46 25 cmstp.exe 21->25         started        signatures10 process11 signatures12 48 Modifies the context of a thread in another process (thread injection) 25->48 50 Maps a DLL or memory area into another process 25->50 52 Tries to detect virtualization through RDTSC time measurements 25->52 28 cmd.exe 1 25->28         started        process13 process14 30 conhost.exe 28->30         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/a9abf5bb4d461231fec3b318a772380e393aefd63c4dd049b701bd1e4b4f437c/
Threat name:
ByteCode-MSIL.Trojan.FormBook
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Status:
Malicious
First seen:
2022-07-04 10:24:24 UTC
File Type:
PE (.Net Exe)
Extracted files:
4
AV detection:
24 of 26 (92.31%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=vgv7lo2niyjdd7wdwmmko4ryby4tv36whrg5asnxag6r4s2pin6a._file
Verdict:
malicious
Label(s):
formbook
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Result
Malware family:
formbook
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Score:
  10/10
Tags:
family:formbook campaign:kn30 rat spyware stealer suricata trojan
Link:
https://tria.ge/reports/220704-nffadagghr/
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
Suspicious use of SetThreadContext
Formbook Payload
Formbook
suricata: ET MALWARE FormBook CnC Checkin (GET)
Unpacked files
SH256 hash:
77a9d6e1ab5edd372b5c39df66e9fb1654ea65ddc4839ce233549a5a085f9dbc
MD5 hash:
830079d893d342f5a1313815059c4ab3
SHA1 hash:
b2c6dbc2ffb9f06844b60255a6e91d87078adedd
Detections:
win_formbook_g0
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win_formbook_auto
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FormBook
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Link:
https://www.unpac.me/results/9b03f252-fa7a-4424-b672-5592e2a2e963/
SH256 hash:
a5e09635510edaebe649af5e4be65b9781787b09966ef3b8aee788c36446a4ac
MD5 hash:
f45a6ba997fa54f3a20ac6d92304f910
SHA1 hash:
dd501910ceb5dd559dc43ed7ec8593a2e4f15723
Link:
https://www.unpac.me/results/9b03f252-fa7a-4424-b672-5592e2a2e963/
SH256 hash:
405e4504b6656fd0fe6e0ce45de32795a83abbe17588f50b9cb5c322666de26d
MD5 hash:
61feba068253172f3d51d923956f869e
SHA1 hash:
d94afe53a7fd422e7040817ecb5073ba6373628a
Link:
https://www.unpac.me/results/9b03f252-fa7a-4424-b672-5592e2a2e963/
SH256 hash:
a9abf5bb4d461231fec3b318a772380e393aefd63c4dd049b701bd1e4b4f437c
MD5 hash:
baf48f38931999c44f50756f556d8a90
SHA1 hash:
daec908192a880bb9390128a2333738cb9326c52
Link:
https://www.unpac.me/results/9b03f252-fa7a-4424-b672-5592e2a2e963/
Malware family:
FormBook
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Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/a9abf5bb4d46/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.

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:malware_Formbook_strings
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect Formbook in memory
Reference:internal research
Rule name:meth_get_eip
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Author:Willi Ballenthin
Rule name:meth_stackstrings
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Author:Willi Ballenthin
Rule name:win_formbook_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:Detects win.formbook.

File information

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

Malspam

Formbook

Executable exe a9abf5bb4d461231fec3b318a772380e393aefd63c4dd049b701bd1e4b4f437c

(this sample)

  
Delivery method
Distributed via e-mail attachment

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