MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 2a8783a8fa5d2994fdce8d2bce2aeb59434d13534e9f13ccae8de38f72f0798f. 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: 18


Intelligence 18 IOCs YARA 1 File information Comments
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SHA256 hash: 2a8783a8fa5d2994fdce8d2bce2aeb59434d13534e9f13ccae8de38f72f0798f
SHA3-384 hash: 3ee0ea4f5b3aad5a0dca0c66a0c947223f8a258618809775b59c0e8e816f0ce40564ab9d25c7ca56505bd36f0c7e43bb
SHA1 hash: f4ba9fd0270bcd4ce6090e950cdeae5bd9880432
MD5 hash: fe7fb44408912cfcc134fece3697776b
humanhash: nineteen-seventeen-equal-eight
File name:shegro2.1.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:242'647 bytes
First seen:2023-06-28 14:08:39 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 61259b55b8912888e90f516ca08dc514 (1'059 x Formbook, 741 x AgentTesla, 427 x GuLoader)
ssdeep 6144:PYa6erNOk21nYN/GQT/J/gUNF8vx+SdJmdMmitT:PYIJEYN/GiJ4GF8vx3dJmdZG
Threatray 2'647 similar samples on MalwareBazaar
TLSH T1E734123067B4C873D15347B12A7977272FD6C8222099AB0B47514A6DBD26AA3F70F323
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 96e8e0d4d4ccb2a4 (9 x Formbook, 6 x AveMariaRAT, 4 x AgentTesla)
Reporter James_inthe_box
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
287
Origin country :
US US
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
shegro2.1.exe
Verdict:
Malicious activity
Analysis date:
2023-06-28 14:11:57 UTC
Tags:
formbook xloader trojan stealer
Link:
https://app.any.run/tasks/a712c6b2-d208-4cbf-8250-37425fedc98b

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/403472/
Detection(s):
SecuriteInfo.com.FileRepMalware.22043.26175.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file in the %temp% directory
Creating a window
Creating a file
Unauthorized injection to a recently created process
Restart of the analyzed sample
Launching a process
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
Result
Malware family:
n/a
Score:
  5/10
Tags:
n/a
Link:
https://dragonfly.certego.net/analysis/93981/overview
Behaviour
MalwareBazaar
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
control lolbin masquerade overlay packed shell32
Link:
https://www.filescan.io/uploads/649c3efef4ab9b52f3dc2295/reports/4c137139-a092-42b1-8769-73c909cd08c1/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/2a8783a8fa5d2994fdce8d2bce2aeb59434d13534e9f13ccae8de38f72f0798f
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/d27ea32a-40ee-409a-b9aa-0943acd6fd5d
Result
Threat name:
FormBook, NSISDropper
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1262695
Signature
Antivirus detection for dropped file
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Detected unpacking (changes PE section rights)
Found evasive API chain (may stop execution after reading information in the PEB, e.g. number of processors)
Found 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
Performs DNS queries to domains with low reputation
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Snort IDS alert for network traffic
System process connects to network (likely due to code injection or exploit)
Tries to detect virtualization through RDTSC time measurements
Yara detected FormBook
Yara detected NSISDropper
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 895725 Sample: shegro2.1.exe Startdate: 28/06/2023 Architecture: WINDOWS Score: 100 36 Snort IDS alert for network traffic 2->36 38 Found malware configuration 2->38 40 Malicious sample detected (through community Yara rule) 2->40 42 9 other signatures 2->42 10 shegro2.1.exe 19 2->10         started        process3 file4 28 C:\Users\user\AppData\...\jnvtgbomfe.dll, PE32 10->28 dropped 54 Detected unpacking (changes PE section rights) 10->54 56 Found evasive API chain (may stop execution after reading information in the PEB, e.g. number of processors) 10->56 58 Maps a DLL or memory area into another process 10->58 60 Tries to detect virtualization through RDTSC time measurements 10->60 14 shegro2.1.exe 10->14         started        signatures5 process6 signatures7 62 Modifies the context of a thread in another process (thread injection) 14->62 64 Maps a DLL or memory area into another process 14->64 66 Sample uses process hollowing technique 14->66 68 Queues an APC in another process (thread injection) 14->68 17 explorer.exe 2 1 14->17 injected process8 dnsIp9 30 www.xvngitnsfbtjregw.xyz 43.229.153.229, 49684, 80 TELECOM-HKHongKongTelecomGlobalDataCentreHK Hong Kong 17->30 32 www.klnaigptapp67.com 188.114.96.7, 49683, 80 CLOUDFLARENETUS European Union 17->32 34 2 other IPs or domains 17->34 44 System process connects to network (likely due to code injection or exploit) 17->44 46 Performs DNS queries to domains with low reputation 17->46 21 control.exe 17->21         started        signatures10 process11 signatures12 48 Modifies the context of a thread in another process (thread injection) 21->48 50 Maps a DLL or memory area into another process 21->50 52 Tries to detect virtualization through RDTSC time measurements 21->52 24 cmd.exe 1 21->24         started        process13 process14 26 conhost.exe 24->26         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/2a8783a8fa5d2994fdce8d2bce2aeb59434d13534e9f13ccae8de38f72f0798f/
Threat name:
Win32.Trojan.Swotter
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Status:
Malicious
First seen:
2023-06-28 10:24:05 UTC
File Type:
PE (Exe)
Extracted files:
4
AV detection:
26 of 37 (70.27%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=fkdyhkh2luuzj7ooruv44kxllfbu2e2tj2prhtforxry64xqpghq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
0128e78a9fc3a12e1f247dec90b1de6ed4176587febc5ab0a9dcc0fc3735db0d
Formbook
042a79fca496efba98589c7115c620c116af2ef1e1308a9ab91f21026a5ccd43
Formbook
3ecf38540014a3fe10b883b34592b8e5eefb11d0e4abf64fd98129d00bf4a682
Formbook
673d8cda7f0d526c493d98e45e1f517bd9b8ddf422054f481e650e95bff3a922
Formbook
d2f81e234482c1627b7e92601ef74dbc7f3726c64d963dc4655cf90ee54d63ed
Formbook
efd586fdc04eae13911a3f2638cb478edb6c952716e3279d854c4d855a9a70c1
Formbook
f31be72f929b86c056e683db26b8ec78a40f3d1156821fca58901189a8ee965e
Formbook
f3b8435e7359411cefb4d6c762550f4881195a2ec0cb035da5737c4b4891fb6f
Formbook
+ 2'637 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:sy18 rat spyware stealer trojan
Link:
https://tria.ge/reports/230628-rf4vhshg36/
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
Deletes itself
Loads dropped DLL
Formbook payload
Formbook
Unpacked files
SH256 hash:
cd8f85488967fd784f34554ce2598ff0c935818d5f81d7e9303e8985e3e58db0
MD5 hash:
236bddbd45b2ecabfca5a9e1aec6604e
SHA1 hash:
d04ab12768dd2401877c7e92bc6a89f5188b98fc
Link:
https://www.unpac.me/results/d1d1a01a-b14c-405e-8c4d-ec58d7dcff23/
SH256 hash:
2a8783a8fa5d2994fdce8d2bce2aeb59434d13534e9f13ccae8de38f72f0798f
MD5 hash:
fe7fb44408912cfcc134fece3697776b
SHA1 hash:
f4ba9fd0270bcd4ce6090e950cdeae5bd9880432
Link:
https://www.unpac.me/results/d1d1a01a-b14c-405e-8c4d-ec58d7dcff23/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/2a8783a8fa5d/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/2a8783a8fa5d2994fdce8d2bce2aeb59434d13534e9f13ccae8de38f72f0798f

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:shellcode
Create hunting rule
Author:nex
Description:Matched shellcode byte patterns

File information

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

  
Delivery method
Other
Cape
Cape
https://www.capesandbox.com/analysis/403472/

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