MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 13c7efc07da5177178e3ed9b89e4db5726c2839eccd316e504ab090bdbb1b4f6. 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
| SHA256 hash: | 13c7efc07da5177178e3ed9b89e4db5726c2839eccd316e504ab090bdbb1b4f6 |
|---|---|
| SHA3-384 hash: | 3b7128bd93c2b1cce25c6fde32673b5f713c91b5c38d9e6f342ce8e70221a285b7cb913e2d8ea74118c4ed3c317ec973 |
| SHA1 hash: | 32d9c959c8627215ed1c77e50604205e0d2a7eb3 |
| MD5 hash: | 101290402fc4f16441980e6eb0ec78a1 |
| humanhash: | finch-aspen-beryllium-maryland |
| File name: | Arccos.exe |
| Download: | download sample |
| Signature | GuLoader |
| File size: | 179'000 bytes |
| First seen: | 2022-10-28 06:44:06 UTC |
| Last seen: | 2022-10-28 08:21:10 UTC |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | e871f39e81b4aa977737b07cee050825 (15 x GuLoader, 3 x Formbook, 2 x RemcosRAT) |
| ssdeep | 3072:tk62PBHHXx4jxiXb0+UZeRzq2TF5h6rlLeigIeL+DWAUUMHtIMjBEyuIf+r:tk62PBH4u0feRzdB5h6rlLeihs+DaUUE |
| Threatray | 37 similar samples on MalwareBazaar |
| TLSH | T12E04015892B5C0E3E9E5057044366B1FFBB97B0591653B0BEBF06A677D32250A83F08B |
| 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): |  |
| dhash icon | b2a89c96a2cada72 (2'283 x Formbook, 981 x Loki, 803 x AgentTesla) |
| Reporter |  lowmal3 |
| Tags: | exe GuLoader signed |
Code Signing Certificate
| Organisation: | |
|---|---|
| Issuer: | |
| Algorithm: | sha256WithRSAEncryption |
| Valid from: | 2022-06-10T06:29:52Z |
| Valid to: | 2025-06-09T06:29:52Z |
| Serial number: | 4412d68a1b994fdc |
| Thumbprint Algorithm: | SHA256 |
| Thumbprint: | 04e3c0fc0ae2ea868eeb84e3c7c6005083b6780c1acdaba02e6aad20893c87b5 |
| Source: | This information was brought to you by ReversingLabs A1000 Malware Analysis Platform |
Intelligence
File Origin
# of uploads :
2
# of downloads :
254
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Arccos.exe
Verdict:
Malicious activity
Analysis date:
2022-10-28 09:41:18 UTC
Tags:
n/a
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Result
Verdict:
Suspicious
Maliciousness:
Behaviour
Creating a window
Creating a file
Сreating synchronization primitives
Delayed reading of the file
Creating a file in the %temp% subdirectories
Searching for the window
Searching for the Windows task manager window
Launching a process
Creating a process with a hidden window
Sending a custom TCP request
Result
Malware family:
n/a
Score:
5/10
Tags:
n/a
Behaviour
MalwareBazaar
Verdict:
Likely Malicious
Threat level:
7.5/10
Confidence:
100%
Tags:
overlay packed shell32.dll
Result
Verdict:
UNKNOWN
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
Result
Threat name:
AgentTesla, GuLoader
Detection:
malicious
Classification:
troj.evad.spyw
Score:
100 / 100
Signature
Mass process execution to delay analysis
May check the online IP address of the machine
Multi AV Scanner detection for submitted file
Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines)
Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines)
Snort IDS alert for network traffic
Tries to detect Any.run
Tries to harvest and steal browser information (history, passwords, etc)
Tries to harvest and steal ftp login credentials
Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Uses the Telegram API (likely for C&C communication)
Writes to foreign memory regions
Yara detected AgentTesla
Yara detected GuLoader
Yara detected Telegram RAT
Behaviour
Behavior Graph:
Threat name:
Win32.Trojan.Guloader
Status:
Malicious
First seen:
2022-10-27 10:59:57 UTC
File Type:
PE (Exe)
Extracted files:
6
AV detection:
22 of 40 (55.00%)
Threat level:
5/5
Detection(s):
Suspicious file
Verdict:
malicious
Similar samples:
+ 27 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
7/10
Tags:
discovery
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Drops file in Windows directory
Checks installed software on the system
Loads dropped DLL
Gathering data
Unpacked files
SH256 hash:
9bf2482d0cdd486e1ec6d21eec00ac95538a7513a7f3c3ba117f7bf21a2b8f2d
MD5 hash:
520d07e4bdab538c87b797d687717639
SHA1 hash:
569e5afdeee3cd6b2a77f715828ccb97b470f5fa
SH256 hash:
739eaaa1a5a9e1d31c0059bb3eab796fa0b704a090529719232195e7adc938c4
MD5 hash:
f578ae804bd2ff5a6139f3dd72d3501e
SHA1 hash:
13059176e097c38c094364f82f9676458bf19844
SH256 hash:
13c7efc07da5177178e3ed9b89e4db5726c2839eccd316e504ab090bdbb1b4f6
MD5 hash:
101290402fc4f16441980e6eb0ec78a1
SHA1 hash:
32d9c959c8627215ed1c77e50604205e0d2a7eb3
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
File information
The table below shows additional information about this malware sample such as delivery method and external references.
Malspam
Delivery method
Distributed via e-mail attachment
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