MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f6a2d28af9b92a8c15d4afeef24e99d1c908787e68602c8bb944b50b3485e31f. 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: 11


Intelligence 11 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: f6a2d28af9b92a8c15d4afeef24e99d1c908787e68602c8bb944b50b3485e31f
SHA3-384 hash: dfa9acaaec75657206a40175114fa9b05ce40df979842b244b77e3b66208ce898042c8cfffe84a669486bcb202939eb8
SHA1 hash: a494146eb403a23fc41cad4bf88c4bc4d600fd20
MD5 hash: 7f8f46c40b2fe1e636a9c1627328f2e1
humanhash: vegan-lactose-item-autumn
File name:SPEC02781.exe
Download: download sample
Signature GuLoader
Create hunting rule
File size:278'752 bytes
First seen:2023-05-03 10:56:15 UTC
Last seen:2023-05-03 11:41:23 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash e9c0657252137ac61c1eeeba4c021000 (53 x GuLoader, 26 x RedLineStealer, 17 x AgentTesla)
ssdeep 6144:o6dLyT7K5sKtRVDLJINxC2koT4VskSFqutDpPN4rhs0Cl:wTqt/LyxTwJSFquN4rW0U
Threatray 744 similar samples on MalwareBazaar
TLSH T1245412633A905417D8978AF11EADB628D2F0AD1C44E6220F27217F37BA76793EF05487
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 dc9c98d991285458 (17 x GuLoader, 6 x Formbook, 6 x SnakeKeylogger)
Reporter abuse_ch
Tags:exe GuLoader signed

Code Signing Certificate

Organisation:
Issuer:
Algorithm:sha256WithRSAEncryption
Valid from:2022-08-08T07:10:39Z
Valid to:2025-08-07T07:10:39Z
Serial number: 2ba74e1217434c1893a815e5a303ae931ec80c4e
Thumbprint Algorithm:SHA256
Thumbprint: 862f2f8606d63daae8b6eb0021291fa39dd4d4d105d14d874e1614fe9ec74408
Source:This information was brought to you by ReversingLabs A1000 Malware Analysis Platform

Intelligence

File Origin
# of uploads :
2
# of downloads :
250
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
SPEC02781.exe
Verdict:
Suspicious activity
Analysis date:
2023-05-03 11:00:41 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/beb48813-81bf-4157-a31d-ef9f6914bcaf

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/386246/
Detection(s):
SecuriteInfo.com.Trojan.GenericKD.66048944.21685.11205.UNOFFICIAL
Create hunting rule

Result
Verdict:
Clean
Maliciousness:

Behaviour
Creating a window
Sending a custom TCP request
Creating a file
Delayed reading of the file
Creating a file in the %temp% subdirectories
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
buer comodo guloader overlay packed shell32.dll
Link:
https://www.filescan.io/uploads/64523e0283c50e4c7d292bbb/reports/87936154-964d-4fb9-b943-de3a960d84cc/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/f6a2d28af9b92a8c15d4afeef24e99d1c908787e68602c8bb944b50b3485e31f
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/7be755b9-f99d-45ab-9503-cb2c12204e93
Result
Threat name:
GuLoader
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
72 / 100
Link:
https://www.joesandbox.com/analysis/1225517
Signature
Antivirus / Scanner detection for submitted sample
Multi AV Scanner detection for submitted file
Tries to detect Any.run
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Yara detected GuLoader
Behaviour
Behavior Graph:
Download SVG
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/f6a2d28af9b92a8c15d4afeef24e99d1c908787e68602c8bb944b50b3485e31f/
Threat name:
Win32.Trojan.FormBook
Create hunting rule
Status:
Malicious
First seen:
2023-03-21 23:53:18 UTC
File Type:
PE (Exe)
Extracted files:
13
AV detection:
24 of 37 (64.86%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=62rnfcxzxeviyfouv7xpetuz2heqq6d6nbqczc5zis2qwnef4mpq._file
Verdict:
malicious
Similar samples:
07fa172e1404c76738226cefc6e5d45559430c9946e419ed089d9ae5690783f9
GuLoader
18b1abba90cf4a74b7216b91f02febb1c8694113f5ddc3507fd35b66253bcb83
GuLoader
3f6b1b62fd63112b0626567e8cd6a9179499109f1aee6fe0627d9b429add64d1
GuLoader
494d5735144af171cc15708b37b491b74be1522494958e605ac348dd4897dcf9
GuLoader
601068d38fe3988fac053f5be6fcd8f364ac199fcd278ebe10cd7ee74e9b2726
GuLoader
b534709b0de0c4392af03fea261580b08915ae1e5a55496f85dc21500c6a8338
GuLoader
d989ab685c59463a2ae115503881d520032409525de9846d458583e4ad75fc15
GuLoader
f13b318caba7938d24d18b32e16a1f111ec694b313590a4023f5e277d70ef7db
GuLoader
+ 734 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  7/10
Tags:
discovery
Link:
https://tria.ge/reports/230503-m19jaaed67/
Behaviour
Suspicious behavior: MapViewOfSection
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Drops file in Windows directory
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Checks installed software on the system
Checks QEMU agent file
Loads dropped DLL
Unpacked files
SH256 hash:
ac9dfe3b35ea4b8932536ed7406c29a432976b685cc5322f94ef93df920fede7
MD5 hash:
0063d48afe5a0cdc02833145667b6641
SHA1 hash:
e7eb614805d183ecb1127c62decb1a6be1b4f7a8
Link:
https://www.unpac.me/results/48726e64-0a08-4b6b-9a1a-437400a8c022/
Parent samples :
5312214b15330113f6eab71565e1e3c7d1ee3b59daa6703c271aaf3b192e6809
02fca6ef5d9d8b1eb29f7ac8ea0573b504ea7f06c215e091791653b40fe1329a
cc53accc69b32c2507210ea70d1d56aa84dbe354a7f79577df180179ea797427
045a7318a9e2e550208c0c7e9fc805068df19fa73823ac3acaa049a46c4045ee
f2a883a0e4b01c72b0f063df3be5a0102e5c8fbaedc39c8d35c632b200599283
dffefbde27442b9095388b1871ffdc101c430b9a814138be4f962328a5b73fde
e0fb60da371912c158861c9660632d58e45cfcff12351cc9e03f497f319eb5de
904f69a4bed3844273cce1676e8920794815af4c1527e560bbc1bc44b5b8457a
SH256 hash:
f6a2d28af9b92a8c15d4afeef24e99d1c908787e68602c8bb944b50b3485e31f
MD5 hash:
7f8f46c40b2fe1e636a9c1627328f2e1
SHA1 hash:
a494146eb403a23fc41cad4bf88c4bc4d600fd20
Link:
https://www.unpac.me/results/48726e64-0a08-4b6b-9a1a-437400a8c022/
Malware family:
GuLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/f6a2d28af9b9/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/f6a2d28af9b92a8c15d4afeef24e99d1c908787e68602c8bb944b50b3485e31f

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/386246/

Comments