MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 83aaf7c668092a95b9e6ba2b46a07f36ca76228675d5a188bbfa3659706e7135. 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 21 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 83aaf7c668092a95b9e6ba2b46a07f36ca76228675d5a188bbfa3659706e7135
SHA3-384 hash: 2fd74bb9554bbb668644f8bb44cd5415531bed0fb4dfa864f4dcb2a1ee4b2e124eab2ebe96dac7faa519f1fd84d3e629
SHA1 hash: cb306b11c72b1c713abb750342ba04f04a7dc3e7
MD5 hash: ded98c72f9a762a6a78fe39d4e432f6f
humanhash: single-idaho-monkey-lactose
File name:PO14624.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:1'243'648 bytes
First seen:2024-06-14 15:58:09 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash afcdf79be1557326c854b6e20cb900a7 (1'102 x FormBook, 936 x AgentTesla, 399 x RemcosRAT)
ssdeep 24576:CAHnh+eWsN3skA4RV1Hom2KXMmHaWjVXh1xhq5Y9ehSYWfppK5:Fh+ZkldoPK8YaWVTzPeypW
TLSH T18D45BE0277D1C036FFAB92739B6AF2455ABC78254123852F13982D79BD701B2273E663
TrID 63.7% (.CPL) Windows Control Panel Item (generic) (57583/11/19)
11.6% (.EXE) Win64 Executable (generic) (10523/12/4)
7.2% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
5.5% (.EXE) Win16 NE executable (generic) (5038/12/1)
4.9% (.EXE) Win32 Executable (generic) (4504/4/1)
File icon (PE):PE icon
dhash icon aae2f3e38383b629 (2'034 x Formbook, 1'183 x CredentialFlusher, 666 x AgentTesla)
Reporter lowmal3
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
445
Origin country :
DE DE
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
83aaf7c668092a95b9e6ba2b46a07f36ca76228675d5a188bbfa3659706e7135.exe
Verdict:
Malicious activity
Analysis date:
2024-06-14 15:59:13 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/65ad5106-4965-490c-a428-b51f3e98aa08

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Trojan.Inject5.5804.13270.29536.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
90.2%
Link:
https://cyber-fortress.com/docs/result/index.php?id=666c6a0b0f85a8479dc700c8win7simulatehigh_evasion
Tags:
Encryption Inject
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Creating a file in the %temp% directory
Creating a file
Creating a process from a recently created file
Launching a process
Сreating synchronization primitives
Enabling autorun by creating a file
Unauthorized injection to a system process
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
autoit epmicrosoft_visual_cc fingerprint keylogger lolbin microsoft_visual_cc packed shell32
Link:
https://www.filescan.io/uploads/666c68d3eae3878d8f39a6ca/reports/f971e38d-bc89-4090-afb0-f8f09b9a5ac6/overview
Verdict:
Malicious
Labled as:
Malware
Link:
https://www.hybrid-analysis.com/sample/83aaf7c668092a95b9e6ba2b46a07f36ca76228675d5a188bbfa3659706e7135
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/79b8299b-82c5-40de-9cc3-7bd5c6f64acc
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1457411
Signature
AI detected suspicious sample
Antivirus detection for URL or domain
Binary is likely a compiled AutoIt script file
Drops VBS files to the startup folder
Found direct / indirect Syscall (likely to bypass EDR)
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
Performs DNS queries to domains with low reputation
Queues an APC in another process (thread injection)
Sigma detected: Drops script at startup location
Sigma detected: WScript or CScript Dropper
Switches to a custom stack to bypass stack traces
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Windows Scripting host queries suspicious COM object (likely to drop second stage)
Writes to foreign memory regions
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1457411 Sample: PO14624.exe Startdate: 14/06/2024 Architecture: WINDOWS Score: 100 44 www.beescy.xyz 2->44 46 www.yetung.com 2->46 48 20 other IPs or domains 2->48 68 Malicious sample detected (through community Yara rule) 2->68 70 Antivirus detection for URL or domain 2->70 72 Multi AV Scanner detection for submitted file 2->72 76 6 other signatures 2->76 11 PO14624.exe 6 2->11         started        15 wscript.exe 1 2->15         started        signatures3 74 Performs DNS queries to domains with low reputation 44->74 process4 file5 42 C:\Users\user\AppData\Local\...\name.exe, PE32 11->42 dropped 82 Binary is likely a compiled AutoIt script file 11->82 17 name.exe 3 11->17         started        84 Windows Scripting host queries suspicious COM object (likely to drop second stage) 15->84 21 name.exe 2 15->21         started        signatures6 process7 file8 40 C:\Users\user\AppData\Roaming\...\name.vbs, data 17->40 dropped 56 Multi AV Scanner detection for dropped file 17->56 58 Binary is likely a compiled AutoIt script file 17->58 60 Machine Learning detection for dropped file 17->60 66 2 other signatures 17->66 23 svchost.exe 17->23         started        62 Writes to foreign memory regions 21->62 64 Maps a DLL or memory area into another process 21->64 26 svchost.exe 21->26         started        signatures9 process10 signatures11 80 Maps a DLL or memory area into another process 23->80 28 JLRoDkoIZkkd.exe 23->28 injected process12 signatures13 86 Found direct / indirect Syscall (likely to bypass EDR) 28->86 31 sethc.exe 13 28->31         started        process14 signatures15 88 Tries to steal Mail credentials (via file / registry access) 31->88 90 Tries to harvest and steal browser information (history, passwords, etc) 31->90 92 Modifies the context of a thread in another process (thread injection) 31->92 94 3 other signatures 31->94 34 JLRoDkoIZkkd.exe 31->34 injected 38 firefox.exe 31->38         started        process16 dnsIp17 50 www.beescy.xyz 162.0.213.72, 49767, 49768, 49769 ACPCA Canada 34->50 52 double2nllc.com 157.173.209.16, 49751, 49752, 49753 SSHENETUS United Kingdom 34->52 54 13 other IPs or domains 34->54 78 Found direct / indirect Syscall (likely to bypass EDR) 34->78 signatures18
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/83aaf7c668092a95b9e6ba2b46a07f36ca76228675d5a188bbfa3659706e7135
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/83aaf7c668092a95b9e6ba2b46a07f36ca76228675d5a188bbfa3659706e7135/
Threat name:
Win32.Trojan.Leonem
Create hunting rule
Status:
Malicious
First seen:
2024-06-14 15:59:10 UTC
File Type:
PE (Exe)
Extracted files:
28
AV detection:
16 of 24 (66.67%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=qovpprtibevjlopgxivunid7g3fhmiugoxk2dcf37i3fs4dooe2q._file
Verdict:
malicious
Result
Malware family:
n/a
Score:
  7/10
Tags:
n/a
Link:
https://tria.ge/reports/240614-te21msxdpb/
Behaviour
Modifies Internet Explorer settings
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Program crash
AutoIT Executable
Suspicious use of SetThreadContext
Drops startup file
Executes dropped EXE
Loads dropped DLL
Unpacked files
SH256 hash:
8c775ac2d73a23b498ba2df2737f6d9b5bd5baae059263bcdccc59723fded56e
MD5 hash:
1a589566393c0923763e9c4a21f8ed8a
SHA1 hash:
fe9c8d9b1ecb0f69554d68797d8cf066e9905a21
Detections:
win_formbook_w0
Create hunting rule
win_formbook_g0
Create hunting rule
Link:
https://www.unpac.me/results/29f09f67-173d-43ef-80c6-bf7eb428fcdb/
SH256 hash:
8309221b129494e58b531e1bb54e12b89d9d2914d893fe831dd19b099aba7331
MD5 hash:
b36c15e967699b292c6aec154f26ba7e
SHA1 hash:
a55f9f93e516b0edf9c69f94eb5df5984ee83a60
Link:
https://www.unpac.me/results/29f09f67-173d-43ef-80c6-bf7eb428fcdb/
SH256 hash:
06bddbb5f3b7263362bfee91884c9e4eecd3ba7fd39a1ce7161bc57f56d19f49
MD5 hash:
fed1d60a3b54423e7bb8004a85053e6f
SHA1 hash:
c7e5a0b80b5566426bfe392f9c38285d9f196f98
Link:
https://www.unpac.me/results/29f09f67-173d-43ef-80c6-bf7eb428fcdb/
SH256 hash:
9ef0fd8f3f040e0a0577acdd484c0f7f7d77fbb0f6156468ca98f622f79a6f10
MD5 hash:
bd7c43a0b46f08f5479d15e7894ecb1c
SHA1 hash:
ac5dbc9cb607e3d0518f0b402aeb431ae2c99c29
Link:
https://www.unpac.me/results/29f09f67-173d-43ef-80c6-bf7eb428fcdb/
SH256 hash:
3989c497b28c895a44d5855c2fabc8926357af95b6683777a627df2716551031
MD5 hash:
087cdee338f9a454724c59330d3c95f1
SHA1 hash:
9ead646987c3dd0e205cd105e030b51a687eb190
Link:
https://www.unpac.me/results/29f09f67-173d-43ef-80c6-bf7eb428fcdb/
SH256 hash:
9338037b49607e523d5aafbe5de8412c06bcbc8e3f5dccfdf7d5c8d4b78499d8
MD5 hash:
405fd1b4128a6655cef9492080d6941d
SHA1 hash:
6a78fc911afebf3be77d640a73debebe1d9925d6
Link:
https://www.unpac.me/results/29f09f67-173d-43ef-80c6-bf7eb428fcdb/
SH256 hash:
b6b795973c4b2b6a499b316eb649312ac487d78a8fd23414e12139d898ba47e4
MD5 hash:
0b93d922c52c13c8a74698862f7fee74
SHA1 hash:
6413ee57cd9f44adcd89496d642f48daa24dfb0b
Link:
https://www.unpac.me/results/29f09f67-173d-43ef-80c6-bf7eb428fcdb/
SH256 hash:
873d66c057d47d1bdf77ec55d4c66e11b5a561cbb39fca6ff91e013037edbd82
MD5 hash:
c7f73ae512f427e17cb854dc56f85889
SHA1 hash:
20895b077dd75622da068409daf2b2a3a12dd33f
Link:
https://www.unpac.me/results/29f09f67-173d-43ef-80c6-bf7eb428fcdb/
SH256 hash:
83aaf7c668092a95b9e6ba2b46a07f36ca76228675d5a188bbfa3659706e7135
MD5 hash:
ded98c72f9a762a6a78fe39d4e432f6f
SHA1 hash:
cb306b11c72b1c713abb750342ba04f04a7dc3e7
Detections:
AutoIT_Compiled
Create hunting rule
SUSP_Imphash_Mar23_3
Create hunting rule
Link:
https://www.unpac.me/results/29f09f67-173d-43ef-80c6-bf7eb428fcdb/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/83aaf7c66809/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/83aaf7c668092a95b9e6ba2b46a07f36ca76228675d5a188bbfa3659706e7135

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:AutoIT_Compiled
Create hunting rule
Author:@bartblaze
Description:Identifies compiled AutoIT script (as EXE). This rule by itself does NOT necessarily mean the detected file is malicious.
Rule name:DebuggerCheck__API
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerCheck__GlobalFlags
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerCheck__QueryInfo
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerHiding__Active
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerHiding__Thread
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:Formbook
Create hunting rule
Author:kevoreilly
Description:Formbook Payload
Rule name:maldoc_find_kernel32_base_method_1
Create hunting rule
Author:Didier Stevens (https://DidierStevens.com)
Rule name:maldoc_getEIP_method_1
Create hunting rule
Author:Didier Stevens (https://DidierStevens.com)
Rule name:MD5_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for MD5 constants
Rule name:meth_get_eip
Create hunting rule
Author:Willi Ballenthin
Rule name:meth_stackstrings
Create hunting rule
Author:Willi Ballenthin
Rule name:pe_no_import_table
Create hunting rule
Description:Detect pe file that no import table
Rule name:RIPEMD160_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for RIPEMD-160 constants
Rule name:SEH__vectored
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:SHA1_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA1 constants
Rule name:shellcode
Create hunting rule
Author:nex
Description:Matched shellcode byte patterns
Rule name:SUSP_Imphash_Mar23_3
Create hunting rule
Author:Arnim Rupp (https://github.com/ruppde)
Description:Detects imphash often found in malware samples (Maximum 0,25% hits with search for 'imphash:x p:0' on Virustotal) = 99,75% hits
Reference:Internal Research
Rule name:Windows_Trojan_Formbook
Create hunting rule
Author:@malgamy12
Rule name:Windows_Trojan_Formbook_1112e116
Create hunting rule
Author:Elastic Security
Reference:https://www.elastic.co/security-labs/formbook-adopts-cab-less-approach
Rule name:win_formbook_w0
Create hunting rule
Author:@malgamy12

File information

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

Malspam

Formbook

Executable exe 83aaf7c668092a95b9e6ba2b46a07f36ca76228675d5a188bbfa3659706e7135

(this sample)

  
Delivery method
Distributed via e-mail attachment

BLint

The following table provides more information about this file using BLint. BLint is a Binary Linter to check the security properties, and capabilities in executables.

Findings
IDTitleSeverity
CHECK_AUTHENTICODEMissing Authenticodehigh
CHECK_DLL_CHARACTERISTICSMissing dll Security Characteristics (HIGH_ENTROPY_VA)high
CHECK_NXMissing Non-Executable Memory Protectioncritical
Reviews
IDCapabilitiesEvidence
AUTH_APIManipulates User AuthorizationADVAPI32.dll::AllocateAndInitializeSid
ADVAPI32.dll::CopySid
ADVAPI32.dll::FreeSid
ADVAPI32.dll::GetLengthSid
ADVAPI32.dll::GetTokenInformation
ADVAPI32.dll::GetAce
COM_BASE_APICan Download & Execute componentsole32.dll::CLSIDFromProgID
ole32.dll::CoCreateInstance
ole32.dll::CoCreateInstanceEx
ole32.dll::CoInitializeSecurity
ole32.dll::CreateStreamOnHGlobal
MULTIMEDIA_APICan Play MultimediaWINMM.dll::mciSendStringW
WINMM.dll::timeGetTime
WINMM.dll::waveOutSetVolume
SECURITY_BASE_APIUses Security Base APIADVAPI32.dll::AddAce
ADVAPI32.dll::AdjustTokenPrivileges
ADVAPI32.dll::CheckTokenMembership
ADVAPI32.dll::DuplicateTokenEx
ADVAPI32.dll::GetAclInformation
ADVAPI32.dll::GetSecurityDescriptorDacl
SHELL_APIManipulates System ShellSHELL32.dll::ShellExecuteExW
SHELL32.dll::ShellExecuteW
SHELL32.dll::SHFileOperationW
WIN32_PROCESS_APICan Create Process and ThreadsADVAPI32.dll::CreateProcessAsUserW
KERNEL32.dll::CreateProcessW
ADVAPI32.dll::CreateProcessWithLogonW
KERNEL32.dll::OpenProcess
ADVAPI32.dll::OpenProcessToken
ADVAPI32.dll::OpenThreadToken
WIN_BASE_APIUses Win Base APIKERNEL32.dll::TerminateProcess
KERNEL32.dll::SetSystemPowerState
KERNEL32.dll::LoadLibraryA
KERNEL32.dll::LoadLibraryExW
KERNEL32.dll::LoadLibraryW
KERNEL32.dll::GetDriveTypeW
WIN_BASE_EXEC_APICan Execute other programsKERNEL32.dll::WriteConsoleW
KERNEL32.dll::ReadConsoleW
KERNEL32.dll::SetStdHandle
KERNEL32.dll::GetConsoleCP
KERNEL32.dll::GetConsoleMode
WIN_BASE_IO_APICan Create FilesKERNEL32.dll::CopyFileExW
KERNEL32.dll::CopyFileW
KERNEL32.dll::CreateDirectoryW
KERNEL32.dll::CreateHardLinkW
IPHLPAPI.DLL::IcmpCreateFile
KERNEL32.dll::CreateFileW
WIN_BASE_USER_APIRetrieves Account InformationKERNEL32.dll::GetComputerNameW
ADVAPI32.dll::GetUserNameW
ADVAPI32.dll::LogonUserW
ADVAPI32.dll::LookupPrivilegeValueW
WIN_NETWORK_APISupports Windows NetworkingMPR.dll::WNetAddConnection2W
MPR.dll::WNetUseConnectionW
WIN_REG_APICan Manipulate Windows RegistryADVAPI32.dll::RegConnectRegistryW
ADVAPI32.dll::RegCreateKeyExW
ADVAPI32.dll::RegDeleteKeyW
ADVAPI32.dll::RegOpenKeyExW
ADVAPI32.dll::RegQueryValueExW
ADVAPI32.dll::RegSetValueExW
WIN_USER_APIPerforms GUI ActionsUSER32.dll::BlockInput
USER32.dll::CloseDesktop
USER32.dll::CreateMenu
USER32.dll::EmptyClipboard
USER32.dll::FindWindowExW
USER32.dll::FindWindowW

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