MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 a3d738ac7f58dec46b30fa546987dafa8753b9324fa948cc84fb7ac51ef8ac7f. 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
Vidar
Vendor detections: 16
| SHA256 hash: | a3d738ac7f58dec46b30fa546987dafa8753b9324fa948cc84fb7ac51ef8ac7f |
|---|---|
| SHA3-384 hash: | aba9877cb2d5d6429e7528b3e4d96362d74e8ca430acc3deba2ffb20ba41d26b8b2f1db714cd13cbec924a23a77a5166 |
| SHA1 hash: | 9b9bfb7475ab8ee4874c7918ec03bfa8bc47cb8b |
| MD5 hash: | 82714b645e276dcdd4f4e69879ae0d21 |
| humanhash: | texas-eight-eleven-william |
| File name: | file |
| Download: | download sample |
| Signature | Vidar |
| File size: | 290'816 bytes |
| First seen: | 2025-11-19 21:41:26 UTC |
| Last seen: | 2025-11-19 23:04:31 UTC |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | 31e06ec6723bcc3b75c69a4521e4b8f5 (15 x Vidar) |
| ssdeep | 6144:tG1O4G85sO4nd81fZYoJHjPAFJhkxAhXFLuYzuQ/B4:tG4m5lEM9PAFJSs/xJ4 |
| TLSH | T1ED5422B7C39A9216C991C8382AF2B7BC037D3983050ACFF6E9B4817763501E55366399 |
| TrID | 63.5% (.EXE) UPX compressed Win64 Executable (70117/5/12) 24.5% (.EXE) UPX compressed Win32 Executable (27066/9/6) 4.5% (.EXE) Win16 NE executable (generic) (5038/12/1) 1.8% (.ICL) Windows Icons Library (generic) (2059/9) 1.8% (.EXE) OS/2 Executable (generic) (2029/13) |
| Magika | pebin |
| Reporter |  Bitsight |
| Tags: | dropped-by-amadey exe fbf543 UPX vidar |
UPX packed
This file is packed with UPX. We have therefore unpacked the file. Below is furhter information about the unpacked (de-compressed) file.
| File size (compressed) : | 290'816 bytes |
|---|---|
| File size (de-compressed) : | 644'608 bytes |
| Format: | win64/pe |
| Unpacked file: | 2d87241730f4bf1a6c4b6746ce2dcad3448e89e85d2eb54d5e86cb263d609a45 |
Intelligence
File Origin
# of uploads :
4
# of downloads :
104
Origin country :
USVendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
file
Verdict:
Malicious activity
Analysis date:
2025-11-19 21:44:13 UTC
Tags:
xor-url generic upx
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Detection(s):
Verdict:
Malicious
Score:
99.9%
Tags:
emotet cobalt
Result
Verdict:
Clean
Maliciousness:
Behaviour
Сreating synchronization primitives
DNS request
Connection attempt
Sending a custom TCP request
Sending an HTTP GET request
Behavior that indicates a threat
Verdict:
Likely Malicious
Threat level:
7.5/10
Confidence:
100%
Tags:
anti-debug crypto fingerprint hacktool obfuscated packed packed packed upx
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Verdict:
Malicious
File Type:
exe x64
First seen:
2025-11-19T19:02:00Z UTC
Last seen:
2025-11-21T14:34:00Z UTC
Hits:
~100
Detections:
Trojan-PSW.Vidar.HTTP.C&C Trojan-PSW.Stealerc.TCP.C&C Trojan-PSW.Stealerc.HTTP.C&C VHO:Trojan.Win32.GenericML.xnet UDS:DangerousObject.Multi.Generic Trojan-PSW.Win32.Stealerc.svm
Verdict:
Malicious
Score:
100%
Verdict:
Malware
File Type:
PE
Verdict:
inconclusive
YARA:
4 match(es)
Tags:
Executable PE (Portable Executable) PE File Layout Win 64 Exe x64
Verdict:
Malicious
Threat:
Family.STEALC
Threat name:
Win64.Trojan.Cerbu
Status:
Malicious
First seen:
2025-11-19 21:42:20 UTC
File Type:
PE+ (Exe)
Extracted files:
3
AV detection:
16 of 36 (44.44%)
Threat level:
5/5
Detection(s):
Suspicious file
Result
Malware family:
vidar
Score:
10/10
Tags:
family:vidar botnet:f1918d6396952119d8335f77407a7a35 discovery spyware stealer upx
Behaviour
Checks processor information in registry
Enumerates system info in registry
Modifies data under HKEY_USERS
Modifies registry class
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of WriteProcessMemory
Browser Information Discovery
Enumerates physical storage devices
Drops file in Windows directory
UPX packed file
Checks installed software on the system
Reads user/profile data of local email clients
Reads user/profile data of web browsers
Detects Vidar Stealer
Vidar
Vidar family
Malware Config
C2 Extraction:
https://steamcommunity.com/profiles/76561198767911792
Verdict:
Malicious
Tags:
Stealc
YARA:
n/a
Unpacked files
SH256 hash:
a3d738ac7f58dec46b30fa546987dafa8753b9324fa948cc84fb7ac51ef8ac7f
MD5 hash:
82714b645e276dcdd4f4e69879ae0d21
SHA1 hash:
9b9bfb7475ab8ee4874c7918ec03bfa8bc47cb8b
SH256 hash:
2d87241730f4bf1a6c4b6746ce2dcad3448e89e85d2eb54d5e86cb263d609a45
MD5 hash:
b00c65442e501656fc175c100d7add7d
SHA1 hash:
e684eef40f0f1a65b411e960956daee033513d21
Detections:
SUSP_XORed_URL_In_EXE
SUSP_XORed_Mozilla
Malware family:
Vidar
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: | BitcoinAddress |
|---|---|
| Author: | Didier Stevens (@DidierStevens) |
| Description: | Contains a valid Bitcoin address |
| Rule name: | CP_Script_Inject_Detector |
|---|---|
| Author: | DiegoAnalytics |
| Description: | Detects attempts to inject code into another process across PE, ELF, Mach-O binaries |
| Rule name: | DebuggerCheck__API |
|---|---|
| Reference: | https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara |
| Rule name: | DebuggerCheck__QueryInfo |
|---|---|
| Reference: | https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara |
| Rule name: | DebuggerCheck__RemoteAPI |
|---|---|
| Reference: | https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara |
| Rule name: | dgaagas |
|---|---|
| Author: | Harshit |
| Description: | Uses certutil.exe to download a file named test.txt |
| Rule name: | SUSP_XORed_Mozilla_Oct19 |
|---|---|
| Author: | Florian Roth |
| Description: | Detects suspicious single byte XORed keyword 'Mozilla/5.0' - it uses yara's XOR modifier and therefore cannot print the XOR key. You can use the CyberChef recipe linked in the reference field to brute force the used key. |
| Reference: | https://gchq.github.io/CyberChef/#recipe=XOR_Brute_Force() |
| Rule name: | SUSP_XORed_Mozilla_RID2DB4 |
|---|---|
| Author: | Florian Roth |
| Description: | Detects suspicious XORed keyword - Mozilla/5.0 |
| Reference: | Internal Research |
| Rule name: | SUSP_XORed_URL_In_EXE |
|---|---|
| Author: | Florian Roth (Nextron Systems) |
| Description: | Detects an XORed URL in an executable |
| Reference: | https://twitter.com/stvemillertime/status/1237035794973560834 |
| Rule name: | SUSP_XORed_URL_in_EXE_RID2E46 |
|---|---|
| Author: | Florian Roth |
| Description: | Detects an XORed URL in an executable |
| Reference: | https://twitter.com/stvemillertime/status/1237035794973560834 |
| Rule name: | ThreadControl__Context |
|---|---|
| Reference: | https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara |
| Rule name: | upx_largefile |
|---|---|
| Author: | k3nr9 |
| Rule name: | win_upx_packed |
|---|---|
| Author: | Reedus0 |
| Description: | Rule for detecting UPX packed malware |
File information
The table below shows additional information about this malware sample such as delivery method and external references.
Web download
Dropped by
Amadey
Delivery method
Distributed via web download
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