MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 e8b4e90cb7a9233231088d027c2c090aafc143c77e1f46d34d6b206c2c797419. 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: 11
| SHA256 hash: | e8b4e90cb7a9233231088d027c2c090aafc143c77e1f46d34d6b206c2c797419 |
|---|---|
| SHA3-384 hash: | bd607e4aeca6333d98204df5bec52351b91d25c454962b0674e0fc6fb2e40d18427048a85d46352b33e9af6ae289d0e8 |
| SHA1 hash: | ea718bc482d968f9db9577b8d9edb08e4f24abbd |
| MD5 hash: | e2e01c7a8e323e117cfc9c4cdf0ad1c2 |
| humanhash: | queen-uncle-california-gee |
| File name: | SCAN_Wells Fargo bank payment.exe |
| Download: | download sample |
| Signature | OskiStealer |
| File size: | 934'400 bytes |
| First seen: | 2021-07-27 18:47:23 UTC |
| Last seen: | Never |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | f34d5f2d4577ed6d9ceec516c1f5a744 (48'744 x AgentTesla, 19'608 x Formbook, 12'242 x SnakeKeylogger) |
| ssdeep | 12288:BGUVpyvUIZbVlBPI2VBPaBP5SaSv1Ty11If+zUIFxicJfqP6QG:YLvDBlBPIOBPaYau1Ty11QCigfqy |
| Threatray | 471 similar samples on MalwareBazaar |
| TLSH | T1C615E12622179204DC3883F44C25D5F12BFAAC2A663DC27D2AC4BD7F7D736B85AD1581 |
| dhash icon | b0b0b0b0a0b0b08e (10 x SnakeKeylogger, 1 x OskiStealer, 1 x AgentTesla) |
| Reporter |  GovCERT_CH |
| Tags: | exe OskiStealer |
Intelligence
File Origin
# of uploads :
1
# of downloads :
116
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
SCAN_Wells Fargo bank payment.exe
Verdict:
Malicious activity
Analysis date:
2021-07-27 18:49:36 UTC
Tags:
n/a
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
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:
Oski Vidar
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Signature
Antivirus detection for URL or domain
Found malware configuration
Found many strings related to Crypto-Wallets (likely being stolen)
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Posts data to a JPG file (protocol mismatch)
Tries to harvest and steal browser information (history, passwords, etc)
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected Oski Stealer
Yara detected Vidar stealer
Behaviour
Behavior Graph:
Gathering data
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Status:
Malicious
First seen:
2021-07-19 09:15:14 UTC
AV detection:
23 of 28 (82.14%)
Threat level:
5/5
Detection(s):
Suspicious file
Verdict:
malicious
Similar samples:
+ 461 additional samples on MalwareBazaar
Result
Malware family:
oski
Score:
10/10
Tags:
family:oski infostealer spyware stealer
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Program crash
Suspicious use of SetThreadContext
Accesses cryptocurrency files/wallets, possible credential harvesting
Reads user/profile data of web browsers
Oski
Malware Config
C2 Extraction:
mmcjo.com/crown/
Unpacked files
SH256 hash:
b78520fd0bfc19c1277ffe0de68f53eda25a8f76ab32985798d512d9ac6b32e8
MD5 hash:
be48ad322171c4de34c222ec41b1f5c9
SHA1 hash:
c08a83e9bfeb9bddb1982f1528bf490052b1d5b8
Detections:
win_oski_g0
win_oski_auto
SH256 hash:
bb684696d41e736cd130a445c194c2482e5edfde959cbeafbe8bd91b29d5cd36
MD5 hash:
4f5095327540d89705b1e682eb26fb01
SHA1 hash:
969b05a613cdf38722ce8deb5a17667ff41aac20
SH256 hash:
908835c460a71a64a533df4d8082ca856180b5107dd4a58be16c6d3567c32183
MD5 hash:
e0615c8ebfc04bff75864400d96275a6
SHA1 hash:
1ddec327243ce9389edaf554c43e217c1fa14d0d
SH256 hash:
83d9e44d9a311ea6fdbcbd09fdc816a2067806dcacf24beb5ee786191b1a3ea1
MD5 hash:
b1a7b752b6638ee03cffe5a1dde9213e
SHA1 hash:
52d215a173d2f293990f8c12fc7f4a86330a29cb
SH256 hash:
e8b4e90cb7a9233231088d027c2c090aafc143c77e1f46d34d6b206c2c797419
MD5 hash:
e2e01c7a8e323e117cfc9c4cdf0ad1c2
SHA1 hash:
ea718bc482d968f9db9577b8d9edb08e4f24abbd
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: | pe_imphash |
|---|
| Rule name: | Skystars_Malware_Imphash |
|---|---|
| Author: | Skystars LightDefender |
| Description: | imphash |
File information
The table below shows additional information about this malware sample such as delivery method and external references.
Malspam
Delivery method
Distributed via e-mail attachment
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