oski | 9b26547086a1489e5534452021694af3a565fe76926e671112be4852947a5d27

Analysis

max time kernel
91s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20220414-en
submitted
22-05-2022 05:31

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General

Target

IMG_106_680_74_80.exe
Size

381KB
MD5

e05e738dcb98a9f8c125138b492f82e5
SHA1

02f9a41a35cc4794456fbc48b8e0245e622eab69
SHA256

9b26547086a1489e5534452021694af3a565fe76926e671112be4852947a5d27
SHA512

4728be50ea680648b8dc2b739e54d2d4b4bc5a901dbd75cb8092175c5516d78696580e7804de2326fa839570e61906ccd533b140431a3ad413fde050ed5bbbd0

Score

10^/10

oski infostealer spyware stealer suricata

Malware Config

Extracted

Family

oski

osiq.icu

Signatures

Oski
Oski is an infostealer targeting browser data, crypto wallets.
infostealer oski
suricata: ET MALWARE Vidar/Arkei/Megumin/Oski Stealer HTTP POST Pattern
suricata: ET MALWARE Vidar/Arkei/Megumin/Oski Stealer HTTP POST Pattern
suricata
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

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3932 set thread context of 560	3932	IMG_106_680_74_80.exe	86

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3984	560	WerFault.exe	86

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3932	IMG_106_680_74_80.exe
3932	IMG_106_680_74_80.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3932	IMG_106_680_74_80.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 3932 wrote to memory of 560	3932	IMG_106_680_74_80.exe	86
PID 3932 wrote to memory of 560	3932	IMG_106_680_74_80.exe	86
PID 3932 wrote to memory of 560	3932	IMG_106_680_74_80.exe	86
PID 3932 wrote to memory of 560	3932	IMG_106_680_74_80.exe	86
PID 3932 wrote to memory of 560	3932	IMG_106_680_74_80.exe	86
PID 3932 wrote to memory of 560	3932	IMG_106_680_74_80.exe	86
PID 3932 wrote to memory of 560	3932	IMG_106_680_74_80.exe	86
PID 3932 wrote to memory of 560	3932	IMG_106_680_74_80.exe	86
PID 3932 wrote to memory of 560	3932	IMG_106_680_74_80.exe	86

C:\Users\Admin\AppData\Local\Temp\IMG_106_680_74_80.exe
"C:\Users\Admin\AppData\Local\Temp\IMG_106_680_74_80.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3932
- C:\Users\Admin\AppData\Local\Temp\IMG_106_680_74_80.exe
  C:\Users\Admin\AppData\Local\Temp\IMG_106_680_74_80.exe
  2⤵
  PID:560
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 560 -s 1324
    3⤵
    - Program crash
    PID:3984

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 360 -p 560 -ip 560
1⤵
PID:1472

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

T1081

Discovery

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/560-134-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/560-135-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/560-136-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/560-137-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3932-130-0x0000000000EA0000-0x0000000000F02000-memory.dmp

Filesize
392KB

Download
memory/3932-131-0x00000000058D0000-0x0000000005946000-memory.dmp

Filesize
472KB

Download
memory/3932-132-0x00000000058A0000-0x00000000058BE000-memory.dmp

Filesize
120KB

Download