MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 59537f07eaef89b19794f6c71c2e58a1d55a778804fdd614301d184495efa33f. 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: 4


Intelligence 4 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 59537f07eaef89b19794f6c71c2e58a1d55a778804fdd614301d184495efa33f
SHA3-384 hash: 736fdb4e19b7862aaf0c6802113024a34941eb04a2e73a69c4d35c71c97363c1c51626b2c92140065fbdee7853c32a00
SHA1 hash: 69d7226b1ddf3b70b56de50460f401560ffb93eb
MD5 hash: bbbd8ed0d34580cc28879a55634c13f1
humanhash: freddie-wolfram-football-nebraska
File name:bb.exe
Download: download sample
Signature GuLoader
Create hunting rule
File size:110'592 bytes
First seen:2020-05-05 12:10:06 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash cd3152519c69eedcdb831aeaf776d7c0 (1 x GuLoader, 1 x FormBook)
ssdeep 1536:yHc/OMXDe0uQHv+8stHh1J9ZuDhD8baws6pHzvFDSqN3t7:ycOMsDJ9ZuDh1wlNBDScd7
Threatray 513 similar samples on MalwareBazaar
TLSH E6B332415EA6EC1AD9A97AF2D735F09DC7806C35B871721BAAC0715E1F384809F3076B
Reporter abuse_ch
Tags:exe GuLoader


Avatar
abuse_ch
Malspam distributing GuLoader:

HELO: gxjjyy.cn
Sending IP: 202.103.212.141
From: Jane Roh<zz@gxjjyy.cn>
Subject: RE: Technical drawing
Attachment: Drawing.img (contains "bb.exe")

GuLoader pushing Neurevt

Neurevt payload URL:
http://castmart.ga/~zadmin/xcloud/hermbb_mabSWy214.bin

Neurevt C2:
http://castmart.ga/~zadmin/beta/herm/logout.php

Intelligence

File Origin
# of uploads :
1
# of downloads :
99
Origin country :
n/a
Vendor Threat Intelligence
Detection(s):
Win.Trojan.Fareitvb-7760051-0
Create hunting rule

Gathering data
Threat name:
Win32.Trojan.Injector
Create hunting rule
Status:
Malicious
First seen:
2020-05-05 12:36:13 UTC
File Type:
PE (Exe)
Extracted files:
6
AV detection:
24 of 31 (77.42%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=lfjx6b7k56e3df4u63drylsyuhkvu54iat65mfbqdumejfppum7q._file
Verdict:
malicious
Label(s):
guloader
Create hunting rule
Similar samples:
4e53ab173ae73594fa1cceefcc3f911b889b2796169bf1c5d2e3c23bb26de2e3
GuLoader
68a4315ec90aded56b0e8fcda244e5b1cad8993a1785c0c6d70ce3d073ef6826
GuLoader
860d534c7f01866a377138352f2abdb9cd72bc0e7011204611e754f9ce41e11b
GuLoader
872c6f0c21cc04decb1b21636a3c5bf3f128dff7d4c43500cd56dd8f24d8a54a
GuLoader
b022be4adc35569368e23da7b344c4f9a4ce9efffaf1013d1fc778cb2b58f67f
GuLoader
b715ce2fa69bc8384df1a4137b50bc30e05c0f3f557fe8608635744543b9976d
GuLoader
c81ab1ade819ca91b950ecc7dda7cb9796f62e74fd160ad6ea6e5e68c636b16c
GuLoader
cb506273e06bdf86fc982d0856e21042aca6208abd36584bf15c82cede8dedca
GuLoader
e781a2162de7ea85b85a82cb16bbe8bfbff33cfa368e096ee63d6108e18b0e79
GuLoader
e9665d327618201f7c4997ca0e594b0c428093a623a66bd38eaa7483921b809d
GuLoader
+ 503 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  7/10
Tags:
n/a
Link:
https://tria.ge/reports/201109-8ke1ta5wbj/
Behaviour
Suspicious behavior: MapViewOfSection
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Checks QEMU agent state file
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:win_betabot_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:autogenerated rule brought to you by yara-signator
Rule name:win_betabot_w0
Create hunting rule
Author:Venom23
Description:Neurevt Malware Sig

File information

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

b72e8702b592132b8daeb1ed25d888f4

GuLoader

Executable exe 59537f07eaef89b19794f6c71c2e58a1d55a778804fdd614301d184495efa33f

(this sample)

  
Dropped by
MD5 b72e8702b592132b8daeb1ed25d888f4
  
Delivery method
Distributed via e-mail attachment

Comments