oski | ba9e8e95489f6de5529ccd9577a65ac5decaf52900d206ca72d715e8fa4bb918

General

Target

ba9e8e95489f6de5529ccd9577a65ac5decaf52900d206ca72d715e8fa4bb918.exe
Size

4.0MB
MD5

40e6a0021744f9d32a8522aef538c47a
SHA1

0096c40005e4f19a12f8588357bb512a2cae38a6
SHA256

ba9e8e95489f6de5529ccd9577a65ac5decaf52900d206ca72d715e8fa4bb918
SHA512

5ef067b26eded45b914f0786622224d95c1e22db45dd998b376356e5e981f4d190a0f5a49365ca9ac8b8fcf45edd68350cc10a08fd1cd317d6d295cbfb986377

Score

10^/10

oski evasion infostealer spyware stealer themida trojan

Malware Config

Extracted

Family

oski

C2

ratienoinino.pw

Signatures

Oski
Oski is an infostealer targeting browser data, crypto wallets.
infostealer oski
Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497

Processes:

ba9e8e95489f6de5529ccd9577a65ac5decaf52900d206ca72d715e8fa4bb918.exe

description ioc process

Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ ba9e8e95489f6de5529ccd9577a65ac5decaf52900d206ca72d715e8fa4bb918.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	ba9e8e95489f6de5529ccd9577a65ac5decaf52900d206ca72d715e8fa4bb918.exe

Checks BIOS information in registry 2 TTPs 2 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

ba9e8e95489f6de5529ccd9577a65ac5decaf52900d206ca72d715e8fa4bb918.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	ba9e8e95489f6de5529ccd9577a65ac5decaf52900d206ca72d715e8fa4bb918.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	ba9e8e95489f6de5529ccd9577a65ac5decaf52900d206ca72d715e8fa4bb918.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081

Themida packer 7 IoCs

Detects Themida, an advanced Windows software protection system.

themida

Processes:

resource	yara_rule
behavioral1/memory/824-55-0x00000000011B0000-0x00000000016F7000-memory.dmp	themida
behavioral1/memory/824-56-0x00000000011B0000-0x00000000016F7000-memory.dmp	themida
behavioral1/memory/824-57-0x00000000011B0000-0x00000000016F7000-memory.dmp	themida
behavioral1/memory/824-58-0x00000000011B0000-0x00000000016F7000-memory.dmp	themida
behavioral1/memory/824-59-0x00000000011B0000-0x00000000016F7000-memory.dmp	themida
behavioral1/memory/824-61-0x00000000011B0000-0x00000000016F7000-memory.dmp	themida
behavioral1/memory/824-63-0x00000000011B0000-0x00000000016F7000-memory.dmp	themida

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

Processes:

ba9e8e95489f6de5529ccd9577a65ac5decaf52900d206ca72d715e8fa4bb918.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	ba9e8e95489f6de5529ccd9577a65ac5decaf52900d206ca72d715e8fa4bb918.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

Processes:

ba9e8e95489f6de5529ccd9577a65ac5decaf52900d206ca72d715e8fa4bb918.exe

pid process

824 ba9e8e95489f6de5529ccd9577a65ac5decaf52900d206ca72d715e8fa4bb918.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

ba9e8e95489f6de5529ccd9577a65ac5decaf52900d206ca72d715e8fa4bb918.exe

description pid process

Token: SeTakeOwnershipPrivilege 824 ba9e8e95489f6de5529ccd9577a65ac5decaf52900d206ca72d715e8fa4bb918.exe

pid	process
824	ba9e8e95489f6de5529ccd9577a65ac5decaf52900d206ca72d715e8fa4bb918.exe

description	pid	process
Token: SeTakeOwnershipPrivilege	824	ba9e8e95489f6de5529ccd9577a65ac5decaf52900d206ca72d715e8fa4bb918.exe

C:\Users\Admin\AppData\Local\Temp\ba9e8e95489f6de5529ccd9577a65ac5decaf52900d206ca72d715e8fa4bb918.exe
"C:\Users\Admin\AppData\Local\Temp\ba9e8e95489f6de5529ccd9577a65ac5decaf52900d206ca72d715e8fa4bb918.exe"
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of AdjustPrivilegeToken
PID:824

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

1

T1497

Credential Access

Credentials in Files

1

T1081

Discovery

Query Registry

2

T1012

Virtualization/Sandbox Evasion

1

T1497

System Information Discovery

2

T1082

Lateral Movement

Collection

Data from Local System

1

T1005

Exfiltration

Command and Control

Impact

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Downloads

memory/824-54-0x00000000762C1000-0x00000000762C3000-memory.dmp

Filesize
8KB

Download
memory/824-55-0x00000000011B0000-0x00000000016F7000-memory.dmp

Filesize
5.3MB

Download
memory/824-56-0x00000000011B0000-0x00000000016F7000-memory.dmp

Filesize
5.3MB

Download
memory/824-57-0x00000000011B0000-0x00000000016F7000-memory.dmp

Filesize
5.3MB

Download
memory/824-58-0x00000000011B0000-0x00000000016F7000-memory.dmp

Filesize
5.3MB

Download
memory/824-59-0x00000000011B0000-0x00000000016F7000-memory.dmp

Filesize
5.3MB

Download
memory/824-61-0x00000000011B0000-0x00000000016F7000-memory.dmp

Filesize
5.3MB

Download
memory/824-62-0x0000000077A70000-0x0000000077BF0000-memory.dmp

Filesize
1.5MB

Download
memory/824-63-0x00000000011B0000-0x00000000016F7000-memory.dmp

Filesize
5.3MB

Download
memory/824-64-0x00000000011B0000-0x00000000016F7000-memory.dmp

Filesize
5.3MB

Download
memory/824-66-0x00000000011B1000-0x00000000011E6000-memory.dmp

Filesize
212KB

Download
memory/824-67-0x00000000002D0000-0x0000000000304000-memory.dmp

Filesize
208KB

Download
memory/824-68-0x00000000011B0000-0x00000000016F7000-memory.dmp

Filesize
5.3MB

Download
memory/824-69-0x00000000011B0000-0x00000000016F7000-memory.dmp

Filesize
5.3MB

Download
memory/824-70-0x0000000077A70000-0x0000000077BF0000-memory.dmp

Filesize
1.5MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads