MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 db127ccf5ea69c0bc3888efe5ae2a532c5f5590a2f589f049139fcf63f5e8062. 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


OskiStealer


Vendor detections: 10


Intelligence 10 IOCs YARA 4 File information Comments 1
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: db127ccf5ea69c0bc3888efe5ae2a532c5f5590a2f589f049139fcf63f5e8062
SHA3-384 hash: 964cd8fe36fc314aec48056b4103bcc30a1bc57c5013a81503ea4853a9ddeacda5f708681cf9f4b8053e29b5617707e7
SHA1 hash: 6b6a45bf7a911bbc8552fd80bcc1cc05f30fae3d
MD5 hash: 766c4170ac23eac0c9123e2b8a67bfb9
humanhash: beryllium-berlin-mobile-carolina
File name:FBRO ORDER SHEET - YATSAL SUMMER 2021.exe
Download: download sample
Signature OskiStealer
Create hunting rule
File size:253'399 bytes
First seen:2021-04-27 08:32:44 UTC
Last seen:2021-04-27 10:13:44 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash ea4e67a31ace1a72683a99b80cf37830 (70 x Formbook, 64 x GuLoader, 54 x Loki)
ssdeep 6144:9PXkvfFBFUTsr2gpGXVLdGNKTl1Hfc297OOFAAqlPK:qvMsrJMVLdHPHZtFvqw
Threatray 996 similar samples on MalwareBazaar
TLSH 8744125629A0D8F3DBF102715E3EB25B57B7A601216A1783F731EB837A212A5F40F583
Reporter abuse_ch
Tags:exe OskiStealer

Intelligence

File Origin
# of uploads :
2
# of downloads :
129
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
FBRO ORDER SHEET - YATSAL SUMMER 2021.exe
Verdict:
Malicious activity
Analysis date:
2021-04-27 08:47:07 UTC
Tags:
trojan stealer vidar loader rat azorult
Link:
https://app.any.run/tasks/27242923-ed4a-4596-868e-955080a5195a

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/144494/
Detection(s):
SecuriteInfo.com.Mal.Generic-S.26508.14083.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file in the %temp% directory
Creating a file
Sending a UDP request
Deleting a recently created file
Reading critical registry keys
Replacing files
Creating a window
Delayed writing of the file
DNS request
Sending an HTTP GET request
Sending a custom TCP request
Changing the Zone.Identifier stream
Creating a process from a recently created file
Creating a process with a hidden window
Running batch commands
Using the Windows Management Instrumentation requests
Searching for the window
Unauthorized injection to a recently created process
Stealing user critical data
Unauthorized injection to a recently created process by context flags manipulation
Launching a tool to kill processes
Sending an HTTP POST request to an infection source
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.
Result
Threat name:
Azorult Vidar
Create hunting rule
Detection:
malicious
Classification:
phis.troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/698756
Signature
Antivirus detection for URL or domain
Creates files in alternative data streams (ADS)
Detected unpacking (changes PE section rights)
Detected unpacking (overwrites its own PE header)
Downloads files with wrong headers with respect to MIME Content-Type
Found many strings related to Crypto-Wallets (likely being stolen)
Initial sample is a PE file and has a suspicious name
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Posts data to a JPG file (protocol mismatch)
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
Tries to harvest and steal Bitcoin Wallet information
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 Crypto Currency Wallets
Tries to steal Instant Messenger accounts or passwords
Tries to steal Mail credentials (via file access)
Yara detected Azorult
Yara detected Azorult Info Stealer
Yara detected Vidar stealer
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 398297 Sample: FBRO ORDER SHEET - YATSAL S... Startdate: 27/04/2021 Architecture: WINDOWS Score: 100 58 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->58 60 Multi AV Scanner detection for domain / URL 2->60 62 Malicious sample detected (through community Yara rule) 2->62 64 13 other signatures 2->64 8 FBRO ORDER SHEET - YATSAL SUMMER 2021.exe 19 2->8         started        process3 file4 34 C:\Users\user\AppData\Local\...\hu0crhlmv.dll, PE32 8->34 dropped 74 Maps a DLL or memory area into another process 8->74 12 FBRO ORDER SHEET - YATSAL SUMMER 2021.exe 202 8->12         started        signatures5 process6 dnsIp7 54 45.144.225.118, 49726, 80 DEDIPATH-LLCUS Netherlands 12->54 56 cdn.discordapp.com 162.159.130.233, 443, 49727, 49728 CLOUDFLARENETUS United States 12->56 44 C:\ProgramData\287057279608.exe, PE32 12->44 dropped 46 C:\Users\user\AppData\Local\...\usd[1].exe, ASCII 12->46 dropped 48 C:\...\287057279608.exe:Zone.Identifier, ASCII 12->48 dropped 50 8 other files (none is malicious) 12->50 dropped 84 Creates files in alternative data streams (ADS) 12->84 86 Tries to steal Crypto Currency Wallets 12->86 17 287057279608.exe 19 12->17         started        21 cmd.exe 1 12->21         started        file8 signatures9 process10 file11 32 C:\Users\user\AppData\...\vo4cdhwe1w.dll, PE32 17->32 dropped 66 Multi AV Scanner detection for dropped file 17->66 68 Detected unpacking (changes PE section rights) 17->68 70 Machine Learning detection for dropped file 17->70 72 Maps a DLL or memory area into another process 17->72 23 287057279608.exe 66 17->23         started        28 taskkill.exe 1 21->28         started        30 conhost.exe 21->30         started        signatures12 process13 dnsIp14 52 lexusbiscuit.com 85.25.177.199, 49729, 49735, 80 GD-EMEA-DC-SXB1DE Germany 23->52 36 C:\Users\user\AppData\...\vcruntime140.dll, PE32 23->36 dropped 38 C:\Users\user\AppData\Local\...\ucrtbase.dll, PE32 23->38 dropped 40 C:\Users\user\AppData\Local\...\softokn3.dll, PE32 23->40 dropped 42 45 other files (none is malicious) 23->42 dropped 76 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 23->76 78 Tries to steal Instant Messenger accounts or passwords 23->78 80 Tries to steal Mail credentials (via file access) 23->80 82 4 other signatures 23->82 file15 signatures16
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/db127ccf5ea69c0bc3888efe5ae2a532c5f5590a2f589f049139fcf63f5e8062/
Threat name:
Win32.Trojan.Nemesis
Create hunting rule
Status:
Malicious
First seen:
2021-04-27 06:22:23 UTC
AV detection:
17 of 47 (36.17%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=3mjhzt26u2oaxq4ir37fvyvfglc7kwikf5mj6berhh6pmp26qbra._file
Verdict:
malicious
Similar samples:
286c2eb8755215619d8cb48cc884091251729d5925b74444fe3b62c2c1a5acb5
OskiStealer
2dae80e04d518be8a6e1659d53afd6aea2eecc35086db46b4dd0a701a4b6f812
OskiStealer
2f4dc31023ec39356b3aa220863cba0ac8b25770641423bccf79ee2b10d77278
OskiStealer
308c96557c6be5d4519ba4bac38c23e611c7b61683cfc1063a6009e216c24f5e
OskiStealer
4100f196d5289b085ea167afbec9aadbb5105bf46e48b5402f583db123878f96
OskiStealer
604e8bce3d31f5e04fe9622cedeb0696a69b9cb7f262a9bb33009ede20df100a
OskiStealer
69fe5bb4b975f9437b6c3bcf3f07dc807a8f2e848f1e0c5802012295b06a742c
OskiStealer
b699a2766f106ff77377780bad431b72ef1748bf989e09f2b82fb73cf30cbde3
OskiStealer
c9c5b4b76ac69632d5f5931198adb5d21d214c72d8524ffc60d7d6bbcd44cf03
OskiStealer
f09dc0b3275b4c1e3a616911805011c2871af1407599493dc980b6987cb313eb
OskiStealer
+ 986 additional samples on MalwareBazaar
Result
Malware family:
oski
Create hunting rule
Score:
  10/10
Tags:
family:azorult family:oski discovery infostealer spyware stealer trojan
Link:
https://tria.ge/reports/210427-k53pcjdahj/
Behaviour
Checks processor information in registry
Kills process with taskkill
NTFS ADS
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
NSIS installer
Enumerates physical storage devices
Suspicious use of SetThreadContext
Accesses cryptocurrency files/wallets, possible credential harvesting
Checks installed software on the system
Loads dropped DLL
Reads data files stored by FTP clients
Reads local data of messenger clients
Reads user/profile data of local email clients
Reads user/profile data of web browsers
Downloads MZ/PE file
Executes dropped EXE
Azorult
Oski
Malware Config
C2 Extraction:
http://lexusbiscuit.com/OiuBn/index.php
Unpacked files
SH256 hash:
061894ced88db97141cdaf824d15380778c5866d6a444bd35f79628039760dbd
MD5 hash:
73e79a2afddc1a61421eec3da34a9f89
SHA1 hash:
0ddb7bb2210dfea8ea348fed733bdfeabd3d4aac
Link:
https://www.unpac.me/results/5adf8570-c7c5-49dd-b89d-90dbdfc06f74/
SH256 hash:
295f80ec6b3e29ce09ff75520c02c32d6359fb8d6caf23186cfc13c60ae32bc0
MD5 hash:
a61ce7bebc90a136506b80d849c2221f
SHA1 hash:
08769339dc14f72242c718bd786d15892ec9ded1
Link:
https://www.unpac.me/results/5adf8570-c7c5-49dd-b89d-90dbdfc06f74/
SH256 hash:
db127ccf5ea69c0bc3888efe5ae2a532c5f5590a2f589f049139fcf63f5e8062
MD5 hash:
766c4170ac23eac0c9123e2b8a67bfb9
SHA1 hash:
6b6a45bf7a911bbc8552fd80bcc1cc05f30fae3d
Link:
https://www.unpac.me/results/5adf8570-c7c5-49dd-b89d-90dbdfc06f74/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Formbook
Score:
0.80
Link:
https://yomi.yoroi.company/submissions/db127ccf5ea69c0bc3888efe5ae2a532c5f5590a2f589f049139fcf63f5e8062

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:MALWARE_Win_Vidar
Create hunting rule
Author:ditekSHen
Description:Detects Vidar / ArkeiStealer
Rule name:Vidar
Create hunting rule
Author:kevoreilly
Description:Vidar Payload
Rule name:win_oski_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:autogenerated rule brought to you by yara-signator
Rule name:win_oski_g0
Create hunting rule
Author:Slavo Greminger, SWITCH-CERT

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Cape
Cape
https://www.capesandbox.com/analysis/144494/

Comments


Avatar
a̵c̵c̸i̵d̷e̵n̷t̴a̷l̴r̵e̷b̸e̴l̸ commented on 2021-04-27 09:07:06 UTC

============================================================
MBC behaviors list (github.com/accidentalrebel/mbcscan):
============================================================
0) [C0032.001] Data Micro-objective::CRC32::Checksum
1) [C0026.002] Data Micro-objective::XOR::Encode Data
4) [C0046] File System Micro-objective::Create Directory
5) [C0048] File System Micro-objective::Delete Directory
6) [C0047] File System Micro-objective::Delete File
7) [C0049] File System Micro-objective::Get File Attributes
8) [C0051] File System Micro-objective::Read File
9) [C0050] File System Micro-objective::Set File Attributes
10) [C0052] File System Micro-objective::Writes File
11) [E1510] Impact::Clipboard Modification
12) [C0036.004] Operating System Micro-objective::Create Registry Key::Registry
13) [C0036.002] Operating System Micro-objective::Delete Registry Key::Registry
14) [C0036.003] Operating System Micro-objective::Open Registry Key::Registry
15) [C0036.005] Operating System Micro-objective::Query Registry Key::Registry
16) [C0036.006] Operating System Micro-objective::Query Registry Value::Registry
17) [C0017] Process Micro-objective::Create Process
18) [C0038] Process Micro-objective::Create Thread