MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 dfa04d8d3ce15de46fb7556375eb5ec64fc97d71c2275b6a471c86563ba7be71. 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: 10


Intelligence 10 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: dfa04d8d3ce15de46fb7556375eb5ec64fc97d71c2275b6a471c86563ba7be71
SHA3-384 hash: 3bedb3cb349d575f7322e63a1e695f9b0058a72c274d6d4bb51f7527da74ffed39991cc988daf4f3e606ffca3d001520
SHA1 hash: ae8750199ab02846f125aed3551e52404e618bfd
MD5 hash: 6f9433489c234b56f12a5e807ad4bfcb
humanhash: tennessee-uranus-hot-table
File name:6f9433489c234b56f12a5e807ad4bfcb.exe
Download: download sample
Signature GuLoader
Create hunting rule
File size:413'904 bytes
First seen:2023-07-27 07:14:00 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash b78ecf47c0a3e24a6f4af114e2d1f5de (300 x GuLoader, 23 x Formbook, 21 x RemcosRAT)
ssdeep 6144:CBe337n8xkABZYQkqIqZ7zz7/3QVgJ9glpKRXhK0tuIAeaPmjJoFGCO:v7LABZYQk3qxIV/GX002WOFlO
Threatray 2'116 similar samples on MalwareBazaar
TLSH T11294D093EE8043B3D418483996D7B72125F69CB99B5ACF1353D830262FB2192257F36B
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 c2aab2c2c0f0f0f0 (5 x GuLoader, 1 x RemcosRAT)
Reporter abuse_ch
Tags:exe GuLoader signed

Code Signing Certificate

Organisation:
Issuer:
Algorithm:sha256WithRSAEncryption
Valid from:2022-12-11T11:30:44Z
Valid to:2025-12-10T11:30:44Z
Serial number: 2cee9602b2bc34a9e16aadd1fbcc15164011f6da
Thumbprint Algorithm:SHA256
Thumbprint: f23c5a058783e48080fabae3db1cfa44e9bc5eb7298ac13a0cb8975915371dc8
Source:This information was brought to you by ReversingLabs A1000 Malware Analysis Platform

Intelligence

File Origin
# of uploads :
1
# of downloads :
275
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Order_Specifications_IEM028.xls
Verdict:
Malicious activity
Analysis date:
2023-07-27 06:40:02 UTC
Tags:
exploit cve-2017-11882 loader
Link:
https://app.any.run/tasks/f5420ac1-6a3a-4b14-9aad-76f1def6202a

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/434694/
Detection(s):
SecuriteInfo.com.Mal.Generic-S.31020.16397.20236.UNOFFICIAL
Create hunting rule

Result
Verdict:
Clean
Maliciousness:

Behaviour
Searching for the window
Creating a window
Creating a file in the %AppData% subdirectories
Creating a file in the %temp% subdirectories
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
control lolbin overlay packed shell32
Link:
https://www.filescan.io/uploads/64c2193d1b48787a496f3bd9/reports/e566f2c3-7923-4d43-a59b-489a54f7e29b/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_90%
Link:
https://www.hybrid-analysis.com/sample/dfa04d8d3ce15de46fb7556375eb5ec64fc97d71c2275b6a471c86563ba7be71
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/efc8eec5-538b-41ca-918a-ea4e12cb6215
Result
Threat name:
GuLoader, FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1280918
Signature
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Found malware configuration
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
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 Any.run
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Yara detected FormBook
Yara detected GuLoader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1280918 Sample: CBaxoveJtw.exe Startdate: 27/07/2023 Architecture: WINDOWS Score: 100 32 www.ypasbfxplu.shop 2->32 34 www.wshaizapp.site 2->34 36 27 other IPs or domains 2->36 54 Snort IDS alert for network traffic 2->54 56 Found malware configuration 2->56 58 Malicious sample detected (through community Yara rule) 2->58 60 8 other signatures 2->60 11 CBaxoveJtw.exe 36 2->11         started        signatures3 process4 file5 30 C:\Users\user\AppData\Local\...\System.dll, PE32 11->30 dropped 68 Tries to detect Any.run 11->68 15 CBaxoveJtw.exe 6 11->15         started        signatures6 process7 dnsIp8 44 198.46.177.160, 49966, 80 AS-COLOCROSSINGUS United States 15->44 46 Modifies the context of a thread in another process (thread injection) 15->46 48 Tries to detect Any.run 15->48 50 Maps a DLL or memory area into another process 15->50 52 2 other signatures 15->52 19 explorer.exe 6 1 15->19 injected signatures9 process10 dnsIp11 38 buddhabazaar.online 162.241.225.93, 49975, 80 UNIFIEDLAYER-AS-1US United States 19->38 40 www.r74jsy.cfd 107.148.29.94, 49977, 80 PEGTECHINCUS United States 19->40 42 13 other IPs or domains 19->42 62 System process connects to network (likely due to code injection or exploit) 19->62 23 cmd.exe 19->23         started        signatures12 process13 signatures14 64 Modifies the context of a thread in another process (thread injection) 23->64 66 Maps a DLL or memory area into another process 23->66 26 cmd.exe 1 23->26         started        process15 process16 28 conhost.exe 26->28         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/dfa04d8d3ce15de46fb7556375eb5ec64fc97d71c2275b6a471c86563ba7be71/
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=36qe3dj44fo6i35xkvrxl226yzh4s7lryitvw2shdsdfmo5hxzyq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
cloudeye
Create hunting rule
Similar samples:
03a84155093ab32f570220991ff8f30d65fa048544c4e0fd95038c730be6cec4
GuLoader
0cffea5daeb941cc6235f4de2fe2ba348ff08742d196ffc68bc8d7f1109596fd
GuLoader
49b109625db665c82ae907c02b184a90b4388caa1f1ddd2800b944a3bcf9805b
GuLoader
4aea5f6079cedf9c5205a0939e9c05119d5df7d73dde0f3a19ab2fd09a6443da
GuLoader
61141d9453d13d203de8255903f1aec9fea4906616f000cca0b906a58d754cca
GuLoader
86d7bb37384646a755a03c2f6e743483ee40d5af6f018824e89c54a9308ceecf
GuLoader
992f3f674ce6a165ef8aa64d52920eafb0466d40ad2e1081b813f3e55ae1305e
GuLoader
aee5d1b7326545ff692b98743e04d035e01415300fea8a5bf445d3490d6776cc
GuLoader
b101cf0ec986e1879a51d9c395a8c48e35dbee7d2e48846260d52ed42e125764
GuLoader
b28c7e4510175a83aa87b5511c73319de27fc894ffc28d561d4689c3ca27d1f9
GuLoader
+ 2'106 additional samples on MalwareBazaar
Result
Malware family:
guloader
Create hunting rule
Score:
  10/10
Tags:
family:formbook family:guloader campaign:ms14 downloader rat spyware stealer trojan
Link:
https://tria.ge/reports/230727-h2m98aaf63/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of NtCreateThreadExHideFromDebugger
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Checks QEMU agent file
Loads dropped DLL
Formbook payload
Formbook
Guloader,Cloudeye
Unpacked files
SH256 hash:
fa4ab1d6f79fd677433a31ada7806373a789d34328da46ccb0449bbf347bd73e
MD5 hash:
3f176d1ee13b0d7d6bd92e1c7a0b9bae
SHA1 hash:
fe582246792774c2c9dd15639ffa0aca90d6fd0b
Link:
https://www.unpac.me/results/2d22ac0e-2f78-4f0f-8dec-4ec6cbcf6568/
SH256 hash:
dfa04d8d3ce15de46fb7556375eb5ec64fc97d71c2275b6a471c86563ba7be71
MD5 hash:
6f9433489c234b56f12a5e807ad4bfcb
SHA1 hash:
ae8750199ab02846f125aed3551e52404e618bfd
Link:
https://www.unpac.me/results/2d22ac0e-2f78-4f0f-8dec-4ec6cbcf6568/
Malware family:
GuLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/dfa04d8d3ce1/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: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

File information

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

Web download

GuLoader

Executable exe dfa04d8d3ce15de46fb7556375eb5ec64fc97d71c2275b6a471c86563ba7be71

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/2690800/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/434694/

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