oski | 16915202866eb8e9d42298ec1e2a20c8694267b67e10dba3f6169d5c712ffe9e

Analysis

max time kernel
149s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
29-01-2023 21:29

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General

Target

16915202866eb8e9d42298ec1e2a20c8694267b67e10dba3f6169d5c712ffe9e.exe
Size

292KB
MD5

4e820624a50df38378d06063608a50a9
SHA1

33d46f4b8430e08f3e74f2cb0c14dd876c92e5c1
SHA256

16915202866eb8e9d42298ec1e2a20c8694267b67e10dba3f6169d5c712ffe9e
SHA512

f71cfd3c19bf591effa56c38243f19dd2649dc2305328dfe2b2a971e2a4165a174b5a78cf8cfebf98393e7d18b1066356b7158bc8f10b55d267db8e5e7d33bbd
SSDEEP

6144:iloykaNXjYQUDA79GTulOSdAeGr1eIu97mL6K9GIM62:i1kaNTaDA5OkWeP9C+K9GIM62

Score

10^/10

oski infostealer persistence spyware stealer

Malware Config

Extracted

Family

oski

timecforgoodnes.ml

Signatures

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

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\Windows Services = "C:\\Users\\Admin\\AppData\\Roaming\\Windows Update Folder\\Windows Update.exe"	16915202866eb8e9d42298ec1e2a20c8694267b67e10dba3f6169d5c712ffe9e.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1028 set thread context of 1640	1028	16915202866eb8e9d42298ec1e2a20c8694267b67e10dba3f6169d5c712ffe9e.exe	79

Program crash 1 IoCs

pid	pid_target	Process	procid_target
756	1640	WerFault.exe	79

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1028	16915202866eb8e9d42298ec1e2a20c8694267b67e10dba3f6169d5c712ffe9e.exe
1028	16915202866eb8e9d42298ec1e2a20c8694267b67e10dba3f6169d5c712ffe9e.exe
1028	16915202866eb8e9d42298ec1e2a20c8694267b67e10dba3f6169d5c712ffe9e.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1028	16915202866eb8e9d42298ec1e2a20c8694267b67e10dba3f6169d5c712ffe9e.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 1028 wrote to memory of 1640	1028	16915202866eb8e9d42298ec1e2a20c8694267b67e10dba3f6169d5c712ffe9e.exe	79
PID 1028 wrote to memory of 1640	1028	16915202866eb8e9d42298ec1e2a20c8694267b67e10dba3f6169d5c712ffe9e.exe	79
PID 1028 wrote to memory of 1640	1028	16915202866eb8e9d42298ec1e2a20c8694267b67e10dba3f6169d5c712ffe9e.exe	79
PID 1028 wrote to memory of 1640	1028	16915202866eb8e9d42298ec1e2a20c8694267b67e10dba3f6169d5c712ffe9e.exe	79
PID 1028 wrote to memory of 1640	1028	16915202866eb8e9d42298ec1e2a20c8694267b67e10dba3f6169d5c712ffe9e.exe	79
PID 1028 wrote to memory of 1640	1028	16915202866eb8e9d42298ec1e2a20c8694267b67e10dba3f6169d5c712ffe9e.exe	79
PID 1028 wrote to memory of 1640	1028	16915202866eb8e9d42298ec1e2a20c8694267b67e10dba3f6169d5c712ffe9e.exe	79
PID 1028 wrote to memory of 1640	1028	16915202866eb8e9d42298ec1e2a20c8694267b67e10dba3f6169d5c712ffe9e.exe	79
PID 1028 wrote to memory of 1640	1028	16915202866eb8e9d42298ec1e2a20c8694267b67e10dba3f6169d5c712ffe9e.exe	79

C:\Users\Admin\AppData\Local\Temp\16915202866eb8e9d42298ec1e2a20c8694267b67e10dba3f6169d5c712ffe9e.exe
"C:\Users\Admin\AppData\Local\Temp\16915202866eb8e9d42298ec1e2a20c8694267b67e10dba3f6169d5c712ffe9e.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1028
- C:\Users\Admin\AppData\Local\Temp\16915202866eb8e9d42298ec1e2a20c8694267b67e10dba3f6169d5c712ffe9e.exe
  "C:\Users\Admin\AppData\Local\Temp\16915202866eb8e9d42298ec1e2a20c8694267b67e10dba3f6169d5c712ffe9e.exe"
  2⤵
  PID:1640
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1640 -s 1308
    3⤵
    - Program crash
    PID:756

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 1640 -ip 1640
1⤵
PID:4420

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Credentials in Files

T1081

Discovery

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

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Downloads

memory/1028-132-0x0000000000820000-0x0000000000874000-memory.dmp

Filesize
336KB

Download
memory/1028-133-0x000000000AF40000-0x000000000B4E4000-memory.dmp

Filesize
5.6MB

Download
memory/1028-134-0x000000000ABB0000-0x000000000AC42000-memory.dmp

Filesize
584KB

Download
memory/1028-135-0x000000000ACF0000-0x000000000AD8C000-memory.dmp

Filesize
624KB

Download
memory/1640-137-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1640-138-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1640-139-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1640-140-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1640-141-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download