oski | 164f21bf23b1214e81fcc42730e7b34bc42027252c27933142bec228f0614a21

Analysis

max time kernel
182s
max time network
190s
platform
windows10-2004_x64
resource
win10v2004-20220414-en
submitted
09-06-2022 00:48

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General

Target

164f21bf23b1214e81fcc42730e7b34bc42027252c27933142bec228f0614a21.exe
Size

512KB
MD5

9d2524dded18db4cd5c0a66748fbfafa
SHA1

026c0ec9d95888fc5d082390780f2cb2d5ccf6b2
SHA256

164f21bf23b1214e81fcc42730e7b34bc42027252c27933142bec228f0614a21
SHA512

f64e3f54dd08ac82982271f92b568f694f01567303679afb4f738ac3309067617aec6846af19978581d90f2b0819b54599be4f3b15c7bb65f453c981daa380df

Score

10^/10

oski infostealer spyware stealer upx

Malware Config

Signatures

Oski
Oski is an infostealer targeting browser data, crypto wallets.
infostealer oski

UPX packed file 1 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/3816-130-0x0000000000400000-0x00000000004D3000-memory.dmp	upx

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
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4828	3816	WerFault.exe	76

C:\Users\Admin\AppData\Local\Temp\164f21bf23b1214e81fcc42730e7b34bc42027252c27933142bec228f0614a21.exe
"C:\Users\Admin\AppData\Local\Temp\164f21bf23b1214e81fcc42730e7b34bc42027252c27933142bec228f0614a21.exe"
1⤵
PID:3816
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3816 -s 132
  2⤵
  - Program crash
  PID:4828

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3816 -ip 3816
1⤵
PID:1028

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 476 -p 3816 -ip 3816
1⤵
PID:4568

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

T1081

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/3816-130-0x0000000000400000-0x00000000004D3000-memory.dmp

Filesize
844KB

Download
memory/3816-131-0x0000000000400000-0x00000000004D3000-memory.dmp

Filesize
844KB

Download
memory/3816-133-0x0000000003420000-0x0000000003453000-memory.dmp

Filesize
204KB

Download
memory/3816-134-0x0000000000400000-0x00000000004D3000-memory.dmp

Filesize
844KB

Download
memory/3816-135-0x0000000000400000-0x00000000004D3000-memory.dmp

Filesize
844KB

Download