MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 31f4fb510284867a677746d14d04d8479471b58684031a7b0f85cfdfd7e78dec. 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: 18
| SHA256 hash: | 31f4fb510284867a677746d14d04d8479471b58684031a7b0f85cfdfd7e78dec |
|---|---|
| SHA3-384 hash: | 26962b372e69eac2390491c14aefdfe147e54199fdd233106ed236208b31b4650154b2e31538479ee2dd6c951d0b924d |
| SHA1 hash: | 9183421db985f58a25fc3b2fa44f2b15281b9f3a |
| MD5 hash: | 7253605609db2e88c191a34fb7d0e6e6 |
| humanhash: | beryllium-fruit-december-snake |
| File name: | file |
| Download: | download sample |
| Signature | Vidar |
| File size: | 614'400 bytes |
| First seen: | 2025-12-12 09:37:27 UTC |
| Last seen: | 2025-12-15 12:01:17 UTC |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | 31e06ec6723bcc3b75c69a4521e4b8f5 (53 x Vidar) |
| ssdeep | 12288:XMyf1QJm2Nuvr0j4wzvue5aNE7DgPfNUFJMwNEwmsI4:8y9pvQj4wz5aCUNUFlEwmsI |
| TLSH | T190D423CDF142E34BC02782B1520F5C6E9593E59A0244B08A7EB858F66F5BFD98DBE407 |
| 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) : | 614'400 bytes |
|---|---|
| File size (de-compressed) : | 1'353'216 bytes |
| Format: | win64/pe |
| Unpacked file: | f69936cb3fe33041ba7515ca5e1ca3be189eb4563ae7a9921f6b52e745761615 |
Intelligence
File Origin
# of uploads :
14
# of downloads :
132
Origin country :
USVendor Threat Intelligence
Malware configuration found for:
PEPacker
Details
PEPacker
a UPX version number and an unpacked binary
Malware family:
vidar
ID:
1
File name:
_31f4fb510284867a677746d14d04d8479471b58684031a7b0f85cfdfd7e78dec.exe
Verdict:
Malicious activity
Analysis date:
2025-12-12 09:38:59 UTC
Tags:
stealer stealc vidar 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:
97.4%
Tags:
ransomware obfuscated emotet remo
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_90%
Verdict:
Malicious
File Type:
exe x64
First seen:
2025-12-12T07:30:00Z UTC
Last seen:
2025-12-14T07:27:00Z UTC
Hits:
~100
Detections:
Trojan-PSW.Stealerc.TCP.C&C Trojan-PSW.Stealerc.HTTP.C&C PDM:Trojan.Win32.Generic VHO:Trojan-PSW.Win32.Vidar.gen Trojan-PSW.Win32.Stealerc.tdr Trojan-PSW.Vidar.HTTP.C&C
Verdict:
Suspicious
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.VidarStealer
Status:
Malicious
First seen:
2025-12-12 09:38:21 UTC
File Type:
PE+ (Exe)
Extracted files:
3
AV detection:
25 of 38 (65.79%)
Threat level:
5/5
Detection(s):
Suspicious file
Result
Malware family:
vidar
Score:
10/10
Tags:
family:vidar botnet:d8d80f93ce3f43a11b8ca3e05946fd0d discovery spyware stealer upx
Behaviour
Checks processor information in registry
Enumerates system info in registry
Runs ping.exe
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
System Network Configuration Discovery: Internet Connection Discovery
Drops file in Windows directory
UPX packed file
Checks installed software on the system
Checks computer location settings
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/76561198761022496
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Unpacked files
SH256 hash:
31f4fb510284867a677746d14d04d8479471b58684031a7b0f85cfdfd7e78dec
MD5 hash:
7253605609db2e88c191a34fb7d0e6e6
SHA1 hash:
9183421db985f58a25fc3b2fa44f2b15281b9f3a
SH256 hash:
f69936cb3fe33041ba7515ca5e1ca3be189eb4563ae7a9921f6b52e745761615
MD5 hash:
f82c601a4712949fc0e79cdaf2b2359a
SHA1 hash:
c960d5b5fac9d8907c25b719e11694fd6e5ca98e
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: | 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: | DetectEncryptedVariants |
|---|---|
| Author: | Zinyth |
| Description: | Detects 'encrypted' in ASCII, Unicode, base64, or hex-encoded |
| Rule name: | dgaagas |
|---|---|
| Author: | Harshit |
| Description: | Uses certutil.exe to download a file named test.txt |
| Rule name: | RANSOMWARE |
|---|---|
| Author: | ToroGuitar |
| 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: | Sus_CMD_Powershell_Usage |
|---|---|
| Author: | XiAnzheng |
| Description: | May Contain(Obfuscated or no) Powershell or CMD Command that can be abused by threat actor(can create FP) |
| Rule name: | ThreadControl__Context |
|---|---|
| Reference: | https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara |
| Rule name: | upx_largefile |
|---|---|
| Author: | k3nr9 |
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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