MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 1a3ec21661224b7896a73c5ea2873d62c82750d1b1c8790d16b8a66fd9448247. 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: 8


Intelligence 8 IOCs YARA File information Comments 1
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 1a3ec21661224b7896a73c5ea2873d62c82750d1b1c8790d16b8a66fd9448247
SHA3-384 hash: d93fccfc62ea5249ae4c1f3e10a948d48e7368667cf54b40dfe6e5737a2b2423e2cd576da2b590cb216be42938f13ac9
SHA1 hash: fd3f96bfd7590534047d91848b5904d4e49308f3
MD5 hash: 5bc069f8644f6e6ad5a1df00def3ae51
humanhash: magnesium-cold-india-enemy
File name:5bc069f8644f6e6ad5a1df00def3ae51
Download: download sample
Signature GuLoader
Create hunting rule
File size:428'320 bytes
First seen:2022-04-26 16:56:16 UTC
Last seen:2022-04-26 21:01:45 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 61259b55b8912888e90f516ca08dc514 (1'059 x Formbook, 741 x AgentTesla, 427 x GuLoader)
ssdeep 6144:xYa6M9IMKMLlGcsFSFOXC01qGhwevhsq6pCeT8kDkqXGSwN1btnN2uprg1n7UbKy:xYWE62wS1qGLvaq6AeAkDksGSq1pVu34
TLSH T17B9413816560C181E8D00A36EAA8936A17F6DD296865AF0F5330FF9DB5BF746D30D313
TrID 48.8% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13)
16.4% (.EXE) Win64 Executable (generic) (10523/12/4)
10.2% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
7.8% (.EXE) Win16 NE executable (generic) (5038/12/1)
7.0% (.EXE) Win32 Executable (generic) (4505/5/1)
File icon (PE):PE icon
dhash icon 31f0ccceccecf071 (5 x GuLoader)
Reporter zbetcheckin
Tags:32 exe GuLoader signed

Code Signing Certificate

Organisation:Gastroskopier7
Issuer:Gastroskopier7
Algorithm:sha256WithRSAEncryption
Valid from:2022-04-26T13:53:22Z
Valid to:2023-04-26T13:53:22Z
Serial number: 00
Intelligence: 325 malware samples on MalwareBazaar are signed with this code signing certificate
Cert Central Blocklist:This certificate is on the Cert Central blocklist
Thumbprint Algorithm:SHA256
Thumbprint: 8e03e163e36cc54e6868d112324c845fd6a08243cad4ac813002c77bf950543e
Source:This information was brought to you by ReversingLabs A1000 Malware Analysis Platform

Intelligence

File Origin
# of uploads :
3
# of downloads :
280
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
DHL RECEIPT AWB2036472836.xlsx
Verdict:
Malicious activity
Analysis date:
2022-04-26 21:26:54 UTC
Tags:
encrypted exploit CVE-2017-11882 loader
Link:
https://app.any.run/tasks/62a52a5a-e053-4b34-b170-14ebbc31a576

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/266863/
Detection(s):
PUA.Win.Packed.ConfuserEx-6391397-0
Create hunting rule

Result
Verdict:
Clean
Maliciousness:

Behaviour
Searching for synchronization primitives
Sending a custom TCP request
Creating a file in the %temp% directory
Creating a window
Creating a file
Сreating synchronization primitives
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
control.exe nemesis overlay packed shell32.dll
Link:
https://www.filescan.io/uploads/6268245f801e66012b0edb4b/reports/573d9c1a-89d7-4513-8001-29d2b4600277/overview
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.
Malware family:
GuLoader
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/125e41b5-98e7-45de-a634-86128fa67b73
Result
Threat name:
FormBook GuLoader
Create hunting rule
Detection:
malicious
Classification:
troj.evad.spyw
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/983442
Signature
C2 URLs / IPs found in malware configuration
Detected FormBook malware
Found malware configuration
Hides threads from debuggers
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)
Modifies the prolog of user mode functions (user mode inline hooks)
Multi AV Scanner detection for submitted file
PE file contains section with special chars
PE file has nameless sections
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
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: 615935 Sample: 72rPHMzujO.exe Startdate: 26/04/2022 Architecture: WINDOWS Score: 100 51 www.ventures.ru.com 2->51 53 www.trial.ru.com 2->53 55 29 other IPs or domains 2->55 75 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->75 77 Found malware configuration 2->77 79 Malicious sample detected (through community Yara rule) 2->79 81 9 other signatures 2->81 11 72rPHMzujO.exe 1 28 2->11         started        signatures3 process4 file5 43 C:\Users\user\AppData\Local\...\System.dll, PE32 11->43 dropped 45 C:\...\api-ms-win-crt-environment-l1-1-0.dll, PE32 11->45 dropped 47 C:\Users\user\AppData\...\HPSUPD-Win32Exe.exe, PE32+ 11->47 dropped 49 C:\Users\user\AppData\Local\Temp\Common.dll, PE32 11->49 dropped 93 Tries to detect Any.run 11->93 95 Hides threads from debuggers 11->95 15 72rPHMzujO.exe 6 11->15         started        signatures6 process7 dnsIp8 63 drive.google.com 142.250.185.174, 443, 49725 GOOGLEUS United States 15->63 65 googlehosted.l.googleusercontent.com 172.217.23.97, 443, 49726 GOOGLEUS United States 15->65 67 Modifies the context of a thread in another process (thread injection) 15->67 69 Tries to detect Any.run 15->69 71 Maps a DLL or memory area into another process 15->71 73 3 other signatures 15->73 19 explorer.exe 15->19 injected signatures9 process10 dnsIp11 57 huntinton.info 208.109.25.83, 49781, 49782, 80 SUCURI-SECUS United States 19->57 59 www.espace-sama.fr 146.59.209.152, 49791, 49793, 80 OVHFR Norway 19->59 61 12 other IPs or domains 19->61 83 System process connects to network (likely due to code injection or exploit) 19->83 23 wscript.exe 18 19->23         started        27 autochk.exe 19->27         started        signatures12 process13 file14 39 C:\Users\user\AppData\...\KL8logrv.ini, data 23->39 dropped 41 C:\Users\user\AppData\...\KL8logri.ini, data 23->41 dropped 85 Detected FormBook malware 23->85 87 Tries to steal Mail credentials (via file / registry access) 23->87 89 Tries to harvest and steal browser information (history, passwords, etc) 23->89 91 4 other signatures 23->91 29 cmd.exe 2 23->29         started        32 firefox.exe 1 23->32         started        signatures15 process16 file17 97 Tries to harvest and steal browser information (history, passwords, etc) 29->97 35 conhost.exe 29->35         started        37 C:\Users\user\AppData\...\KL8logrf.ini, data 32->37 dropped signatures18 process19
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/1a3ec21661224b7896a73c5ea2873d62c82750d1b1c8790d16b8a66fd9448247/
Threat name:
Win32.Trojan.GuLoader
Create hunting rule
Status:
Malicious
First seen:
2022-04-26 16:57:08 UTC
File Type:
PE (Exe)
Extracted files:
16
AV detection:
17 of 26 (65.38%)
Threat level:
  5/5
Result
Malware family:
guloader
Create hunting rule
Score:
  10/10
Tags:
family:guloader downloader
Link:
https://tria.ge/reports/220426-vf811shbgn/
Behaviour
Enumerates physical storage devices
Loads dropped DLL
Guloader,Cloudeye
Unpacked files
SH256 hash:
241152d5a697ffede9bc45a78a1b342bc8b5d5039d17707fedf24dc5722fce7f
MD5 hash:
bc8dafab5718166aef9467cf1d574a8d
SHA1 hash:
1321731b79580eae96812fb831d71a7e4a14ce0c
Link:
https://www.unpac.me/results/3a9a9fa3-81d0-49c4-8774-e16ca340f965/
SH256 hash:
5b4ddb099b8ee71e053e934257c137d641f9c9e44ffa1df3f999370819f91d81
MD5 hash:
fb369e7a71e1618405923cf9b8ee2412
SHA1 hash:
2671966146d19f32d6ff328c3e105af295c57199
Link:
https://www.unpac.me/results/3a9a9fa3-81d0-49c4-8774-e16ca340f965/
SH256 hash:
8dc562cda7217a3a52db898243de3e2ed68b80e62ddcb8619545ed0b4e7f65a8
MD5 hash:
cff85c549d536f651d4fb8387f1976f2
SHA1 hash:
d41ce3a5ff609df9cf5c7e207d3b59bf8a48530e
Link:
https://www.unpac.me/results/3a9a9fa3-81d0-49c4-8774-e16ca340f965/
SH256 hash:
1a3ec21661224b7896a73c5ea2873d62c82750d1b1c8790d16b8a66fd9448247
MD5 hash:
5bc069f8644f6e6ad5a1df00def3ae51
SHA1 hash:
fd3f96bfd7590534047d91848b5904d4e49308f3
Link:
https://www.unpac.me/results/3a9a9fa3-81d0-49c4-8774-e16ca340f965/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.33
Link:
https://yomi.yoroi.company/submissions/1a3ec21661224b7896a73c5ea2873d62c82750d1b1c8790d16b8a66fd9448247

File information

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

Web download

GuLoader

Executable exe 1a3ec21661224b7896a73c5ea2873d62c82750d1b1c8790d16b8a66fd9448247

(this sample)

  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/2166192/
Cape
Cape
https://www.capesandbox.com/analysis/266863/

Comments


Avatar
zbet commented on 2022-04-26 16:56:22 UTC

url : hxxp://192.3.239.64/vgp.exe