MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c5e3dc39412f2f8efb97c3c6bcdc235727caf646ee2ac7c23e77c11ce0783e15. 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: 14


Intelligence 14 IOCs YARA 1 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: c5e3dc39412f2f8efb97c3c6bcdc235727caf646ee2ac7c23e77c11ce0783e15
SHA3-384 hash: c25998d6a50e4248cab8bcf7eec316cb21cb0e82cb98bf07758abb1a11d70d9a69131825e3c1295df01493270f6940f8
SHA1 hash: 84793fbd7b355eae708f3fbb654b6f67c468effb
MD5 hash: 2c430d35e36d912bda726e384615c0e7
humanhash: aspen-louisiana-nineteen-coffee
File name:2024041342836038.EXE
Download: download sample
Signature Formbook
Create hunting rule
File size:803'880 bytes
First seen:2024-04-16 07:17:38 UTC
Last seen:2024-04-16 08:28:56 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 076b06e6a65c9b7cca5a61be0cd82165 (51 x GuLoader, 4 x AgentTesla, 4 x Formbook)
ssdeep 12288:TOyBItc6c4ASOSjM0rp7Z3lYFNiooPsND1kz7FgCa2+mSP2iYZ367TCIhhDu:5W2zuOSjrrpxG9oETe7iCa2LUnCyh
TLSH T1B8052260F99194AFCD112DB204E3FB79F6BDED432D128D236B153B9FA93CA446909603
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) (4504/4/1)
Reporter cocaman
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
346
Origin country :
CH CH
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
c5e3dc39412f2f8efb97c3c6bcdc235727caf646ee2ac7c23e77c11ce0783e15.exe
Verdict:
Malicious activity
Analysis date:
2024-04-16 07:19:39 UTC
Tags:
formbook xloader stealer spyware
Link:
https://app.any.run/tasks/48db676d-e448-4cbc-8aff-d4e7523a1d24

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Creating a file
Creating a file in the %temp% subdirectories
Searching for the Windows task manager window
Launching a process
Creating a process with a hidden window
Running batch commands
Using the Windows Management Instrumentation requests
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
installer lolbin masquerade overlay packed shell32
Link:
https://www.filescan.io/uploads/661e262b54bafb7d21ce657f/reports/693e0ea2-e3be-423d-9a1c-f461d1b7459e/overview
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/c5e3dc39412f2f8efb97c3c6bcdc235727caf646ee2ac7c23e77c11ce0783e15
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.
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/e1c9f52f-27c6-4416-8ac0-723367ee598f
Result
Threat name:
FormBook, GuLoader
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1426516
Signature
Antivirus detection for URL or domain
Found direct / indirect Syscall (likely to bypass EDR)
Found suspicious powershell code related to unpacking or dynamic code loading
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
Obfuscated command line found
Powershell drops PE file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Suspicious powershell command line found
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Writes to foreign memory regions
Yara detected FormBook
Yara detected GuLoader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1426516 Sample: 2024041342836038.EXE.exe Startdate: 16/04/2024 Architecture: WINDOWS Score: 100 55 www.n-benriya002.com 2->55 57 www.ejbodyart.com 2->57 59 3 other IPs or domains 2->59 85 Malicious sample detected (through community Yara rule) 2->85 87 Antivirus detection for URL or domain 2->87 89 Multi AV Scanner detection for submitted file 2->89 91 3 other signatures 2->91 11 2024041342836038.EXE.exe 3 179 2->11         started        signatures3 process4 file5 45 C:\Users\user\AppData\Local\...\nsExec.dll, PE32 11->45 dropped 47 C:\Users\user\AppData\Local\...\UserInfo.dll, PE32 11->47 dropped 49 C:\Users\user\AppData\Local\...\AdvSplash.dll, PE32 11->49 dropped 51 C:\Users\user\AppData\...\Cadaverousness.Ove, ASCII 11->51 dropped 103 Suspicious powershell command line found 11->103 15 powershell.exe 20 11->15         started        signatures6 process7 file8 53 C:\Users\user\AppData\...\Sklmeriernes100.exe, PE32 15->53 dropped 69 Obfuscated command line found 15->69 71 Writes to foreign memory regions 15->71 73 Sample uses process hollowing technique 15->73 75 2 other signatures 15->75 19 Sklmeriernes100.exe 2 7 15->19         started        23 conhost.exe 15->23         started        25 cmd.exe 1 15->25         started        signatures9 process10 dnsIp11 61 103.14.155.180, 49709, 80 EASYHOST-HKEASYHOSTSOLUTIONLIMITEDHK unknown 19->61 93 Multi AV Scanner detection for dropped file 19->93 95 Machine Learning detection for dropped file 19->95 97 Maps a DLL or memory area into another process 19->97 27 SUjrBVHQzgZqzfPV.exe 19->27 injected 30 cmd.exe 1 19->30         started        signatures12 process13 signatures14 101 Found direct / indirect Syscall (likely to bypass EDR) 27->101 32 cmd.exe 13 27->32         started        35 conhost.exe 30->35         started        37 reg.exe 1 1 30->37         started        process15 signatures16 77 Tries to steal Mail credentials (via file / registry access) 32->77 79 Tries to harvest and steal browser information (history, passwords, etc) 32->79 81 Modifies the context of a thread in another process (thread injection) 32->81 83 2 other signatures 32->83 39 SUjrBVHQzgZqzfPV.exe 32->39 injected 43 firefox.exe 32->43         started        process17 dnsIp18 63 n-benriya002.com 219.94.128.41, 49715, 49716, 49717 SAKURA-CSAKURAInternetIncJP Japan 39->63 65 www.jt-berger.store 217.160.0.183, 49711, 49712, 49713 ONEANDONE-ASBrauerstrasse48DE Germany 39->65 67 ejbodyart.com 112.175.50.218, 49710, 80 KIXS-AS-KRKoreaTelecomKR Korea Republic of 39->67 99 Found direct / indirect Syscall (likely to bypass EDR) 39->99 signatures19
Score:
96%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/c5e3dc39412f2f8efb97c3c6bcdc235727caf646ee2ac7c23e77c11ce0783e15
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/c5e3dc39412f2f8efb97c3c6bcdc235727caf646ee2ac7c23e77c11ce0783e15/
Threat name:
Win32.Trojan.GuLoader
Create hunting rule
Status:
Malicious
First seen:
2024-04-15 15:08:41 UTC
File Type:
PE (Exe)
Extracted files:
96
AV detection:
15 of 24 (62.50%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=yxr5yokbf4xy564xypdlzxbdk4t4v5sg5yvmpqr6o7arzydyhykq._file
Verdict:
malicious
Result
Malware family:
n/a
Score:
  7/10
Tags:
n/a
Link:
https://tria.ge/reports/240416-h4x77sea3w/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Loads dropped DLL
Unpacked files
SH256 hash:
1c2f19e57dc72587aa00800a498c5f581b7d6761dc13b24bcf287ea7bd5ca2bf
MD5 hash:
3eb4cd50dcb9f5981f5408578cb7fb70
SHA1 hash:
13b38cc104ba6ee22dc4dfa6e480e36587f4bc71
Detections:
win_flawedammyy_auto
Create hunting rule
Link:
https://www.unpac.me/results/ef349d8f-94bb-4a93-9af1-2463360ab973/
Parent samples :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 hash:
f4b7bd6ffc472858b786635fc3d2c053025c6ef8e121894785a2f997ad76e16b
MD5 hash:
a5fd5bb479150881ed350f9fa758bb15
SHA1 hash:
ffa55bb6a77fca54eccfc1badc872ebde69b67be
Link:
https://www.unpac.me/results/ef349d8f-94bb-4a93-9af1-2463360ab973/
SH256 hash:
b665b4fd4c9de7a4ee54c720f5b607ca0744c9c69990a741428b469388862f29
MD5 hash:
5cf209df87b3c5e455b5b2b326438ad9
SHA1 hash:
47e8dc726c0a49c0b53a1fba4e03af4bccda003a
Link:
https://www.unpac.me/results/ef349d8f-94bb-4a93-9af1-2463360ab973/
SH256 hash:
ea60f14cbd764de7259f8f5a8f64093c8a4940c46a1a5153b6f42fe019a2297c
MD5 hash:
efec1affbb89c110ad32aa350437f5d7
SHA1 hash:
1dc7bf27ad34dc73813e27cbd63d5853fa196edf
Detections:
win_flawedammyy_auto
Create hunting rule
Link:
https://www.unpac.me/results/ef349d8f-94bb-4a93-9af1-2463360ab973/
Parent samples :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 hash:
c5e3dc39412f2f8efb97c3c6bcdc235727caf646ee2ac7c23e77c11ce0783e15
MD5 hash:
2c430d35e36d912bda726e384615c0e7
SHA1 hash:
84793fbd7b355eae708f3fbb654b6f67c468effb
Link:
https://www.unpac.me/results/ef349d8f-94bb-4a93-9af1-2463360ab973/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/c5e3dc39412f/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/c5e3dc39412f2f8efb97c3c6bcdc235727caf646ee2ac7c23e77c11ce0783e15

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:Detect_SliverFox_String
Create hunting rule
Author:huoji
Description:Detect files is `SliverFox` malware

File information

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

Malspam

Formbook

iso b28544713d74e229e251d11b415a48e118c75015a520f16c21005e4d78a22d5f

Formbook

Executable exe c5e3dc39412f2f8efb97c3c6bcdc235727caf646ee2ac7c23e77c11ce0783e15

(this sample)

  
Delivery method
Other
  
Dropped by
SHA256 b28544713d74e229e251d11b415a48e118c75015a520f16c21005e4d78a22d5f
  
Dropped by
MD5 53ff37a6a2c349401d844564e6c08681

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
Reviews
IDCapabilitiesEvidence
AUTH_APIManipulates User AuthorizationADVAPI32.dll::SetFileSecurityA
COM_BASE_APICan Download & Execute componentsole32.dll::CoCreateInstance
SECURITY_BASE_APIUses Security Base APIADVAPI32.dll::AdjustTokenPrivileges
SHELL_APIManipulates System ShellSHELL32.dll::ShellExecuteA
SHELL32.dll::SHFileOperationA
SHELL32.dll::SHGetFileInfoA
WIN32_PROCESS_APICan Create Process and ThreadsKERNEL32.dll::CreateProcessA
ADVAPI32.dll::OpenProcessToken
KERNEL32.dll::CloseHandle
KERNEL32.dll::CreateThread
WIN_BASE_APIUses Win Base APIKERNEL32.dll::LoadLibraryA
KERNEL32.dll::LoadLibraryExA
KERNEL32.dll::GetDiskFreeSpaceA
KERNEL32.dll::GetCommandLineA
WIN_BASE_IO_APICan Create FilesKERNEL32.dll::CopyFileA
KERNEL32.dll::CreateDirectoryA
KERNEL32.dll::CreateFileA
KERNEL32.dll::DeleteFileA
KERNEL32.dll::MoveFileExA
KERNEL32.dll::MoveFileA
WIN_BASE_USER_APIRetrieves Account InformationADVAPI32.dll::LookupPrivilegeValueA
WIN_REG_APICan Manipulate Windows RegistryADVAPI32.dll::RegCreateKeyExA
ADVAPI32.dll::RegDeleteKeyA
ADVAPI32.dll::RegOpenKeyExA
ADVAPI32.dll::RegQueryValueExA
ADVAPI32.dll::RegSetValueExA
WIN_USER_APIPerforms GUI ActionsUSER32.dll::AppendMenuA
USER32.dll::EmptyClipboard
USER32.dll::FindWindowExA
USER32.dll::OpenClipboard
USER32.dll::PeekMessageA
USER32.dll::CreateWindowExA

Comments