MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 37aa05adb1f5408e886287c8b1ea074315a42ece0d47cbfe6678c26b6c396deb. 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: 15
| SHA256 hash: | 37aa05adb1f5408e886287c8b1ea074315a42ece0d47cbfe6678c26b6c396deb |
|---|---|
| SHA3-384 hash: | 5f0f14b7869310571af69c24bc555d2cb05d6e9ecbe5b8762ba13e18f9f8c50ecf9e0f426387e01215d8c1911a2032db |
| SHA1 hash: | d6ddeb437483e8e4efe73bb6d6aca345b351406c |
| MD5 hash: | eceaa017d7c45b81dbfe192b71de63ed |
| humanhash: | salami-robert-cup-indigo |
| File name: | 37aa05adb1f5408e886287c8b1ea074315a42ece0d47cbfe6678c26b6c396deb |
| Download: | download sample |
| Signature | GuLoader |
| File size: | 427'648 bytes |
| First seen: | 2026-03-06 14:59:05 UTC |
| Last seen: | Never |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | 7eae418c7423834ffc3d79b4300bd6fb (66 x GuLoader, 23 x RemcosRAT, 21 x AgentTesla) |
| ssdeep | 6144:dNDlOLZLClTgEN/HqnXYPXBNSBsiGAgynWxGiQBhTqwwM8Lt:dk8TgEN/HOExESAhkjg+wwM8R |
| TLSH | T19394E147EB1BA820C24544B3D8F589FAE7709D62A556047E3382FF1E98365CF8E1827D |
| TrID | 50.3% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13) 10.6% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2) 10.5% (.EXE) Win64 Executable (generic) (6522/11/2) 8.1% (.EXE) Win16 NE executable (generic) (5038/12/1) 7.2% (.EXE) Win32 Executable (generic) (4504/4/1) |
| Magika | pebin |
| dhash icon | c0c0d2c6c0eca680 (4 x RemcosRAT, 4 x GuLoader, 2 x AgentTesla) |
| Reporter |  adrian__luca |
| Tags: | exe GuLoader signed |
Code Signing Certificate
| Organisation: | procedaar |
|---|---|
| Issuer: | procedaar |
| Algorithm: | sha256WithRSAEncryption |
| Valid from: | 2026-01-10T01:54:32Z |
| Valid to: | 2027-01-10T01:54:32Z |
| Serial number: | 5bcc202a60a9db5d81096b359bc7b5fe463fb1a9 |
| Thumbprint Algorithm: | SHA256 |
| Thumbprint: | cf2eadb0644ddb55de607fcc55e55a8fe6b06592a7b896e87c4395e1faf9b578 |
| Source: | This information was brought to you by ReversingLabs A1000 Malware Analysis Platform |
Intelligence
File Origin
# of uploads :
1
# of downloads :
132
Origin country :
HUVendor Threat Intelligence
Malware configuration found for:
GuLoader
NSIS
Details
GuLoader
a c2 URL, a useragent string, and a string XOR key
GuLoader
an XOR decryption key and an extracted component
NSIS
extracted archive contents
Malware family:
remcos
ID:
1
File name:
37aa05adb1f5408e886287c8b1ea074315a42ece0d47cbfe6678c26b6c396deb
Verdict:
Malicious activity
Analysis date:
2026-03-06 15:47:35 UTC
Tags:
rat remcos guloader
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Guloader
Verdict:
Malicious
Score:
95.7%
Tags:
injection obfusc virus nsis
Verdict:
Unknown
Threat level:
2.5/10
Confidence:
100%
Tags:
adaptive-context anti-debug blackhole installer installer installer-heuristic microsoft_visual_cc nsis signed soft-404
Verdict:
Malicious
Labled as:
Trojan.Generic
Verdict:
Malicious
File Type:
exe x32
Malware family:
Unlabeled
Verdict:
Unknown
Score:
96%
Verdict:
Malware
File Type:
PE
Gathering data
Threat name:
Win32.Trojan.GuLoader
Status:
Malicious
First seen:
2026-03-06 15:02:38 UTC
File Type:
PE (Exe)
Extracted files:
8
AV detection:
13 of 24 (54.17%)
Threat level:
5/5
Detection(s):
Suspicious file
Result
Malware family:
guloader
Score:
10/10
Tags:
family:guloader discovery downloader
Behaviour
Suspicious behavior: MapViewOfSection
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Drops file in Program Files directory
Suspicious use of NtSetInformationThreadHideFromDebugger
Loads dropped DLL
Guloader family
Guloader,Cloudeye
Unpacked files
SH256 hash:
37aa05adb1f5408e886287c8b1ea074315a42ece0d47cbfe6678c26b6c396deb
MD5 hash:
eceaa017d7c45b81dbfe192b71de63ed
SHA1 hash:
d6ddeb437483e8e4efe73bb6d6aca345b351406c
SH256 hash:
c5ba017732597a82f695b084d1aa7fe3b356168cc66105b9392a9c5b06be5188
MD5 hash:
ec9640b70e07141febbe2cd4cc42510f
SHA1 hash:
64a5e4b90e5fe62aa40e7ac9e16342ed066f0306
SH256 hash:
6950991102462d84fdc0e3b0ae30c95af8c192f77ce3d78e8d54e6b22f7c09ba
MD5 hash:
8cf2ac271d7679b1d68eefc1ae0c5618
SHA1 hash:
7cc1caaa747ee16dc894a600a4256f64fa65a9b8
Malware family:
GuLoader
Verdict:
Malicious
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
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: | Detect_NSIS_Nullsoft_Installer |
|---|---|
| Author: | Obscurity Labs LLC |
| Description: | Detects NSIS installers by .ndata section + NSIS header string |
| Rule name: | PE_Digital_Certificate |
|---|---|
| Author: | albertzsigovits |
File information
The table below shows additional information about this malware sample such as delivery method and external references.
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