MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 23458977440cccb8ac7d0d05c238d087d90f5bf1c42157fb3a161d41b741c39d. 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: 13


Intelligence 13 IOCs YARA 1 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 23458977440cccb8ac7d0d05c238d087d90f5bf1c42157fb3a161d41b741c39d
SHA3-384 hash: b2127f741cdc11b2fad2ff185bcabf05f5483840fea6a0df2b39f9e22ffcf4bb1f5299010ba85faff7bf0dc1d3d5a71c
SHA1 hash: a8a874599e968eaa2b1c5934bda3916042432a46
MD5 hash: 89d8cd57b597ac3e19d5662306e35772
humanhash: one-lactose-double-table
File name:Socialdirektrers.exe
Download: download sample
Signature GuLoader
Create hunting rule
File size:274'336 bytes
First seen:2023-04-19 11:43:29 UTC
Last seen:2023-04-20 06:46:25 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 7ed0d71376e55d58ab36dc7d3ffda898 (133 x GuLoader, 28 x RemcosRAT, 23 x AgentTesla)
ssdeep 6144:lkyacCTf7FsB6VwW+dExEXeFelJiHmYuAaE0Zje8AWr:lkNTT+QEDLir4Lje8Ay
Threatray 627 similar samples on MalwareBazaar
TLSH T15E440211B1F8C52BD46606718C73D7FE86B8BF28094803473BA1AF6F1936B57C91A399
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 e8d4d8cce8686869 (5 x GuLoader, 1 x AgentTesla, 1 x Formbook)
Reporter lowmal3
Tags:exe GuLoader signed

Code Signing Certificate

Organisation:
Issuer:
Algorithm:sha256WithRSAEncryption
Valid from:2022-08-22T07:20:33Z
Valid to:2025-08-21T07:20:33Z
Serial number: 0fa8715f7819a57f47f4df9b69b606efbc32d907
Thumbprint Algorithm:SHA256
Thumbprint: 5160f50637c5554164219256c756ccff4aec9c592fdca7266cac3c729b7a72e1
Source:This information was brought to you by ReversingLabs A1000 Malware Analysis Platform

Intelligence

File Origin
# of uploads :
2
# of downloads :
242
Origin country :
DE DE
Vendor Threat Intelligence
Malware family:
guloader
Create hunting rule
ID:
1
File name:
85dff1d3-c91e-558e-82a0-f296a5dd924b.eml
Verdict:
Malicious activity
Analysis date:
2023-04-19 10:40:53 UTC
Tags:
guloader
Link:
https://app.any.run/tasks/f9a52658-e9a0-4d01-840c-7d9042aff633

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/383280/
Detection(s):
SecuriteInfo.com.FileRepMalware.12099.26559.UNOFFICIAL
Create hunting rule

Result
Verdict:
Clean
Maliciousness:

Behaviour
Creating a window
Creating a file
Delayed reading of the file
Creating a file in the %temp% subdirectories
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
overlay packed shell32.dll
Link:
https://www.filescan.io/uploads/643fd404000396b4e9997555/reports/07c8e64d-a89c-4bf5-ad7b-b111ca714b48/overview
Verdict:
Suspicious
Labled as:
Malware
Link:
https://www.hybrid-analysis.com/sample/23458977440cccb8ac7d0d05c238d087d90f5bf1c42157fb3a161d41b741c39d
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/278bbb40-b206-4d9a-8066-1962b8253dfe
Result
Threat name:
GuLoader
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
60 / 100
Link:
https://www.joesandbox.com/analysis/1216806
Signature
Multi AV Scanner detection for submitted file
Tries to detect virtualization through RDTSC time measurements
Yara detected GuLoader
Behaviour
Behavior Graph:
Download SVG
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/23458977440cccb8ac7d0d05c238d087d90f5bf1c42157fb3a161d41b741c39d/
Threat name:
Win32.Trojan.GuLoader
Create hunting rule
Status:
Malicious
First seen:
2023-04-19 10:28:30 UTC
File Type:
PE (Exe)
Extracted files:
8
AV detection:
17 of 24 (70.83%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=encys52ebtglrld5buc4eogqq7mq6w7ryqqvp6z2cyoudn2byooq._file
Verdict:
malicious
Label(s):
cloudeye
Create hunting rule
Similar samples:
094dc63a99e7f4978723577fdbbbadc74ffa4b907368c0cd48b3d0b5f14e3fbc
GuLoader
306e86d6c586c3a6a52ed61b426b1e2520671b95b54510fb3faede2f499801d0
GuLoader
3f6b1b62fd63112b0626567e8cd6a9179499109f1aee6fe0627d9b429add64d1
GuLoader
569aa6697083993d9c387426b827414a7ed225a3dd2e1e3eba1b49667573fdcb
GuLoader
63e437a647e0cd76c38f1e73b5f1d5aa54c8e6a7f26cd31bd0fae9b1994751e9
GuLoader
9dea7f3e39bd54422856d3a625d94e844ac4f37ddf0ef15163a92f6aafb5c803
GuLoader
c3a3c6015ffc1bc98b5a21f89e78049900e5796e67e098bead011a20a99e7b0d
GuLoader
d989ab685c59463a2ae115503881d520032409525de9846d458583e4ad75fc15
GuLoader
e5353ff27ed098df305583595a130e36ed68a127202de30ef963d2a78da20481
GuLoader
ff3949d2a8e0d6b08d2b8b643cdfc6a26f44352da217b4a537e9c16d96ed7198
GuLoader
+ 617 additional samples on MalwareBazaar
Result
Malware family:
guloader
Create hunting rule
Score:
  10/10
Tags:
family:guloader downloader
Link:
https://tria.ge/reports/230419-nv55caca71/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of NtCreateThreadExHideFromDebugger
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Legitimate hosting services abused for malware hosting/C2
Checks QEMU agent file
Checks computer location settings
Loads dropped DLL
Guloader,Cloudeye
Unpacked files
SH256 hash:
1188fbf20b7df9e51ec6cba5f1dbff81955a5d0c0b669d9435121c65114e5e01
MD5 hash:
c78acbfe4dfb94888d5620c507a283f6
SHA1 hash:
118e6a02ba6d3670e51d5f9982c159bb6504cd43
Link:
https://www.unpac.me/results/bf770b79-b95c-40e9-9150-f3196030930f/
SH256 hash:
23458977440cccb8ac7d0d05c238d087d90f5bf1c42157fb3a161d41b741c39d
MD5 hash:
89d8cd57b597ac3e19d5662306e35772
SHA1 hash:
a8a874599e968eaa2b1c5934bda3916042432a46
Link:
https://www.unpac.me/results/bf770b79-b95c-40e9-9150-f3196030930f/
Malware family:
XLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/23458977440c/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/23458977440cccb8ac7d0d05c238d087d90f5bf1c42157fb3a161d41b741c39d

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: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.

Malspam

GuLoader

Executable exe 23458977440cccb8ac7d0d05c238d087d90f5bf1c42157fb3a161d41b741c39d

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/383280/

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