MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 50a055c22972c8fc0ab0a5f26afb453e630be88e9eb9c3592a137a2a7dd6a10c. 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


GuLoader


Vendor detections: 12


Intelligence 12 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 50a055c22972c8fc0ab0a5f26afb453e630be88e9eb9c3592a137a2a7dd6a10c
SHA3-384 hash: 7981ae33cbaaa93e742e17849ca40b25760dca3ca425bde086702a1e788cfffd5921596cc0869b0422587f131cf918c8
SHA1 hash: 16105f192c3e78b562a8ed211aaf632c743d896b
MD5 hash: 5a748796698a5c76d231512b2426a231
humanhash: arizona-april-princess-kansas
File name:Pago fra.exe
Download: download sample
Signature GuLoader
Create hunting rule
File size:497'560 bytes
First seen:2023-08-23 12:46:26 UTC
Last seen:2023-08-24 05:47:32 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash b78ecf47c0a3e24a6f4af114e2d1f5de (295 x GuLoader, 23 x Formbook, 21 x RemcosRAT)
ssdeep 6144:eC2OPZVheNA+ff0nehDE/13A9z3GIKW3+UGPypnnxpof0sQXFdNcW/eBsF4RslKK:Vnhe2eoCDDaK+U2Snnxuc/unNsMy
Threatray 54 similar samples on MalwareBazaar
TLSH T1A6B48C9238CA21AFDD1F4A35035FEAB61A796CD07392496E5F40371D0C3664A90EEDCB
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 c88604b919c6c6c0 (77 x GuLoader, 10 x Formbook, 8 x AgentTesla)
Reporter malwarelabnet
Tags:exe GuLoader signed

Code Signing Certificate

Organisation:
Issuer:
Algorithm:sha256WithRSAEncryption
Valid from:2023-07-26T04:23:11Z
Valid to:2026-07-25T04:23:11Z
Serial number: 4f415945743858a40d99ec677261f02a4387973b
Thumbprint Algorithm:SHA256
Thumbprint: fb9a79e328163d1a625c25197016e1aee4aabd597ae62c0b6dda227e737aaddf
Source:This information was brought to you by ReversingLabs A1000 Malware Analysis Platform

Intelligence

File Origin
# of uploads :
3
# of downloads :
295
Origin country :
CA CA
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Pago fra.exe
Verdict:
Suspicious activity
Analysis date:
2023-08-23 12:47:30 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/c9b47edb-f3db-4929-b244-f6abcb858881

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/444304/
Detection(s):
SecuriteInfo.com.Win32.Evo-gen.5209.18573.UNOFFICIAL
Create hunting rule

Result
Verdict:
Clean
Maliciousness:

Behaviour
Creating a window
Creating a file in the %AppData% subdirectories
Creating a file in the %temp% subdirectories
Searching for the window
Sending a custom TCP request
Delayed reading of the file
Result
Malware family:
n/a
Score:
  5/10
Tags:
n/a
Link:
https://dragonfly.certego.net/analysis/108367/overview
Behaviour
MalwareBazaar
Gathering data
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/50a055c22972c8fc0ab0a5f26afb453e630be88e9eb9c3592a137a2a7dd6a10c
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:
Unknown
Link:
https://analyze.intezer.com/analyses/8eefa923-b64f-4952-af54-04973c844232
Result
Threat name:
GuLoader, FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad.spyw
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1295862
Signature
Antivirus / Scanner detection for submitted sample
Antivirus detection for URL or domain
Injects a PE file into a foreign processes
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 submitted file
Performs DNS queries to domains with low reputation
Queues an APC in another process (thread injection)
Snort IDS alert for network traffic
System process connects to network (likely due to code injection or exploit)
Tries to detect Any.run
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
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: 1295862 Sample: Pago_fra.exe Startdate: 23/08/2023 Architecture: WINDOWS Score: 100 33 www.zhongtaiyi-e-commerce.com 2->33 35 www.shenzhoucui.com 2->35 37 23 other IPs or domains 2->37 49 Snort IDS alert for network traffic 2->49 51 Malicious sample detected (through community Yara rule) 2->51 53 Antivirus detection for URL or domain 2->53 55 5 other signatures 2->55 10 Pago_fra.exe 6 50 2->10         started        signatures3 process4 file5 31 C:\Users\user\AppData\Local\...\System.dll, PE32 10->31 dropped 67 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 10->67 69 Tries to detect Any.run 10->69 14 Pago_fra.exe 6 10->14         started        signatures6 process7 dnsIp8 45 googlehosted.l.googleusercontent.com 142.250.185.129, 443, 49961 GOOGLEUS United States 14->45 47 drive.google.com 142.250.185.238, 443, 49960 GOOGLEUS United States 14->47 71 Tries to detect Any.run 14->71 73 Maps a DLL or memory area into another process 14->73 75 Queues an APC in another process (thread injection) 14->75 18 mRBNHubFBRUIjpxwCbcZNtrSqms.exe 14->18 injected signatures9 process10 process11 20 cmd.exe 13 18->20         started        signatures12 57 Tries to steal Mail credentials (via file / registry access) 20->57 59 Tries to harvest and steal browser information (history, passwords, etc) 20->59 61 Writes to foreign memory regions 20->61 63 3 other signatures 20->63 23 explorer.exe 3 1 20->23 injected 27 firefox.exe 20->27         started        29 mRBNHubFBRUIjpxwCbcZNtrSqms.exe 20->29 injected process13 dnsIp14 39 www.foxxbro.com 91.195.240.123, 49971, 49972, 49973 SEDO-ASDE Germany 23->39 41 empowermedeco.com 84.32.84.32, 49999, 50000, 50001 NTT-LT-ASLT Lithuania 23->41 43 11 other IPs or domains 23->43 65 System process connects to network (likely due to code injection or exploit) 23->65 signatures15
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/50a055c22972c8fc0ab0a5f26afb453e630be88e9eb9c3592a137a2a7dd6a10c/
Threat name:
Win32.Trojan.Guloader
Create hunting rule
Status:
Malicious
First seen:
2023-08-23 07:00:35 UTC
File Type:
PE (Exe)
Extracted files:
7
AV detection:
16 of 37 (43.24%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=kcqflqrjolepycvquxzgv62fhzrqx2eot244gwjkcn5cu7owuega._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
0be1cd04cb84003839d5438dda8e2c40e89857f5c48300e59cac9db26ae7ebed
GuLoader
5762d46e91e94d731bb4f1047a3d080b27be1b34d05236e8c8f24b24238545fd
GuLoader
66e9b5aad3bc2d59cdabefdfeecff99d0e60fd9d65ae7cd60d8a8db80adf48cc
GuLoader
8c305a8516089a9e811fbc9cf560b0e36a2494debe59c5677376638c7155a452
GuLoader
ccc8ed7866ebf89380c45861e50f095db3acf900fa4cf797e1a5de78cf6051aa
GuLoader
d27e8bd86eba4c9e7ffe5d6116d43fe73c3ff4656dbbd4f63a813d68da755d49
GuLoader
e7c6065d235655ee2fa7871ee73a8d14b4f88b87351de7752a4c9569739b667d
GuLoader
fc563ce0d3583e88222493534f0f02d94ca9dab17c906c5deacf7132852b51b4
GuLoader
fd82749104473f4be5f7498f2a751f4090f999c50ae63e114ea49067c2b16185
GuLoader
+ 44 additional samples on MalwareBazaar
Result
Malware family:
guloader
Create hunting rule
Score:
  10/10
Tags:
family:guloader downloader
Link:
https://tria.ge/reports/230823-pz7peadg51/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Drops file in Program Files directory
Drops file in Windows directory
Suspicious use of NtCreateThreadExHideFromDebugger
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Legitimate hosting services abused for malware hosting/C2
Checks QEMU agent file
Loads dropped DLL
Guloader,Cloudeye
Unpacked files
SH256 hash:
681382f3134de5c6272a49dd13651c8c201b89c247b471191496e7335702fa59
MD5 hash:
2ae993a2ffec0c137eb51c8832691bcb
SHA1 hash:
98e0b37b7c14890f8a599f35678af5e9435906e1
Link:
https://www.unpac.me/results/ad8848f3-4bb9-480c-b36a-102f34d56980/
SH256 hash:
50a055c22972c8fc0ab0a5f26afb453e630be88e9eb9c3592a137a2a7dd6a10c
MD5 hash:
5a748796698a5c76d231512b2426a231
SHA1 hash:
16105f192c3e78b562a8ed211aaf632c743d896b
Link:
https://www.unpac.me/results/ad8848f3-4bb9-480c-b36a-102f34d56980/
Malware family:
GuLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/50a055c22972/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/50a055c22972c8fc0ab0a5f26afb453e630be88e9eb9c3592a137a2a7dd6a10c

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:Ins_NSIS_Buer_Nov_2020_1
Create hunting rule
Author:Arkbird_SOLG
Description:Detect NSIS installer used for Buer loader
Rule name:PE_Digital_Certificate
Create hunting rule
Author:albertzsigovits
Rule name:PE_Potentially_Signed_Digital_Certificate
Create hunting rule
Author:albertzsigovits

File information

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

Cape
Cape
https://www.capesandbox.com/analysis/444304/

Comments