MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 81dc4e840be63ced06cf2949a358127e2f9e7bbf917aeea7181a46ab58353f75. 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
MarsStealer
Vendor detections: 17
| SHA256 hash: | 81dc4e840be63ced06cf2949a358127e2f9e7bbf917aeea7181a46ab58353f75 |
|---|---|
| SHA3-384 hash: | c9963875ef69c965cce5acc1d3744a35e66cc3635ed87ecf2b7fd3f299f6785e6892fbb8f742a5ba71f66230769f72f0 |
| SHA1 hash: | 7b33234bf595976d925e287fabef6a148c611331 |
| MD5 hash: | 36c3a21e15e4baa4b7397b83de69b4e6 |
| humanhash: | papa-emma-sweet-six |
| File name: | SecuriteInfo.com.Trojan.PWS.Stealer.37990.26117.18224 |
| Download: | download sample |
| Signature | MarsStealer |
| File size: | 1'433'088 bytes |
| First seen: | 2023-10-23 17:31:14 UTC |
| Last seen: | Never |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | f5fcef2eacb86c1adad598b65c67a3ca (5 x MarsStealer, 1 x Stealc) |
| ssdeep | 12288:bRgcdrhCHwfbv7rHMUtXe44Lzyne0txn+9WXH3ML:bmqewfbv7IwOlLzyne0txmWXH8 |
| Threatray | 821 similar samples on MalwareBazaar |
| TLSH | T1D8650613A1CE8D36E33E35386AF711B448983D80B664A8467FD87ECB0721A7965DD34E |
| TrID | 55.4% (.SCR) Windows screen saver (13097/50/3) 19.0% (.EXE) Win32 Executable (generic) (4505/5/1) 8.5% (.EXE) OS/2 Executable (generic) (2029/13) 8.4% (.EXE) Generic Win/DOS Executable (2002/3) 8.4% (.EXE) DOS Executable Generic (2000/1) |
| Reporter |  SecuriteInfoCom |
| Tags: | exe MarsStealer |
Intelligence
File Origin
# of uploads :
1
# of downloads :
306
Origin country :
FRVendor Threat Intelligence
Malware family:
oski
ID:
1
File name:
SecuriteInfo.com.Trojan.PWS.Stealer.37990.26117.18224
Verdict:
Malicious activity
Analysis date:
2023-10-23 17:33:35 UTC
Tags:
oski stealc stealer
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Result
Verdict:
Malware
Maliciousness:
Gathering data
Verdict:
Malicious
Threat level:
10/10
Confidence:
100%
Tags:
control keylogger lolbin shell32
Verdict:
Malicious
Labled as:
Malware
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:
Oski Stealer
Verdict:
Malicious
Result
Threat name:
CryptOne, Stealc
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Signature
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Detected unpacking (changes PE section rights)
Detected unpacking (overwrites its own PE header)
Found evasive API chain (may stop execution after checking locale)
Found malware configuration
Machine Learning detection for sample
Sample uses string decryption to hide its real strings
Yara detected CryptOne packer
Yara detected Stealc
Behaviour
Behavior Graph:
Score:
73%
Verdict:
Malware
File Type:
PE
Threat name:
Win32.Spyware.Stealc
Status:
Malicious
First seen:
2023-10-23 17:32:07 UTC
File Type:
PE (Exe)
Extracted files:
36
AV detection:
17 of 23 (73.91%)
Threat level:
2/5
Detection(s):
Suspicious file
Verdict:
malicious
Similar samples:
+ 811 additional samples on MalwareBazaar
Result
Malware family:
stealc
Score:
10/10
Tags:
family:stealc discovery stealer
Behaviour
Checks processor information in registry
Suspicious behavior: EnumeratesProcesses
Suspicious use of UnmapMainImage
Program crash
Checks installed software on the system
Stealc
Malware Config
C2 Extraction:
http://tetromask.site
Unpacked files
SH256 hash:
4514dc2fd487de020a07d20fa24c442c5c230e6e4bf668c50022878d75536979
MD5 hash:
6ab4eb0ab579fed49cebd98ba32feb3e
SHA1 hash:
04fab28654315ee6dd5789058fb8cad0ba5d140b
Detections:
stealc
SH256 hash:
81dc4e840be63ced06cf2949a358127e2f9e7bbf917aeea7181a46ab58353f75
MD5 hash:
36c3a21e15e4baa4b7397b83de69b4e6
SHA1 hash:
7b33234bf595976d925e287fabef6a148c611331
Malware family:
Stealc
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: | Borland |
|---|---|
| Author: | malware-lu |
| Rule name: | detect_Mars_Stealer |
|---|---|
| Author: | @malgamy12 |
| Description: | detect_Mars_Stealer |
| Rule name: | infostealer_win_stealc_standalone |
|---|---|
| Description: | Find standalone Stealc sample based on decryption routine or characteristic strings |
| Reference: | https://blog.sekoia.io/stealc-a-copycat-of-vidar-and-raccoon-infostealers-gaining-in-popularity-part-1/ |
| Rule name: | maldoc_find_kernel32_base_method_1 |
|---|---|
| Author: | Didier Stevens (https://DidierStevens.com) |
| Rule name: | maldoc_getEIP_method_1 |
|---|---|
| Author: | Didier Stevens (https://DidierStevens.com) |
| Rule name: | meth_get_eip |
|---|---|
| Author: | Willi Ballenthin |
| Rule name: | meth_stackstrings |
|---|---|
| Author: | Willi Ballenthin |
| Rule name: | shellcode |
|---|---|
| Author: | nex |
| Description: | Matched shellcode byte patterns |
| Rule name: | win_stealc_w0 |
|---|---|
| Author: | crep1x |
| Description: | Find standalone Stealc sample based on decryption routine or characteristic strings |
| Reference: | https://blog.sekoia.io/stealc-a-copycat-of-vidar-and-raccoon-infostealers-gaining-in-popularity-part-1/ |
| Rule name: | yarahub_win_stealc_bytecodes_oct_2023 |
|---|---|
| Author: | Matthew @ Embee_Research |
File information
The table below shows additional information about this malware sample such as delivery method and external references.
No further information available
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