oski | c2a7f190f90a0517a791e5ad8bd8941f6639f84d7e45d6c3b3099adfae1b7e17

Analysis

max time kernel
141s
max time network
129s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
31/08/2024, 10:01

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
a7c9e0bba10b853dd183f2c6b732bd0e1001f1a7b455007dc3022ff465b7797f.exe
Size 396KB
Sample240831-l2f3payakk
SHA256 a7c9e0bba10b853dd183f2c6b732bd0e1001f1a7b455007dc3022ff465b7797f
MD5 8d97f71457a0a2977a82571583306c26
SHA1 936800c740c13a3fc2e05a1c1376007f58002a7d
SHA512 5708375538d7b9927784809912a0b0588e200aaf62668226b9b83c2c4879306d989bef3033807bd7bb8989a56b58b2369b42327968f23f2dddc6d9b2975c51f5
SSDEEP 12288:7ycqterR53JplKiFwgxtQ9LdQAGAHUq/uzK6UA8t9HHHHHHHHHIHHHHHHczJXNAG:7QtervJXzQ9L
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

oski credential_access discovery infostealer persistence spyware stealer

Malware Config

Extracted

Family

oski

forum.daffodil-bd.com

Signatures

Oski
Oski is an infostealer targeting browser data, crypto wallets.
infostealer oski
Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
credential_access stealer

Credentials from Web Browsers
T1555.003
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
T1552.001

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-656926755-4116854191-210765258-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\Windows Services = "C:\\Users\\Admin\\AppData\\Roaming\\Windows Update Folder\\Windows Update.exe"	a7c9e0bba10b853dd183f2c6b732bd0e1001f1a7b455007dc3022ff465b7797f.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 448 set thread context of 1940	448	a7c9e0bba10b853dd183f2c6b732bd0e1001f1a7b455007dc3022ff465b7797f.exe	91

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4804	1940	WerFault.exe	91

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a7c9e0bba10b853dd183f2c6b732bd0e1001f1a7b455007dc3022ff465b7797f.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a7c9e0bba10b853dd183f2c6b732bd0e1001f1a7b455007dc3022ff465b7797f.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
448	a7c9e0bba10b853dd183f2c6b732bd0e1001f1a7b455007dc3022ff465b7797f.exe
448	a7c9e0bba10b853dd183f2c6b732bd0e1001f1a7b455007dc3022ff465b7797f.exe
448	a7c9e0bba10b853dd183f2c6b732bd0e1001f1a7b455007dc3022ff465b7797f.exe
448	a7c9e0bba10b853dd183f2c6b732bd0e1001f1a7b455007dc3022ff465b7797f.exe
448	a7c9e0bba10b853dd183f2c6b732bd0e1001f1a7b455007dc3022ff465b7797f.exe
448	a7c9e0bba10b853dd183f2c6b732bd0e1001f1a7b455007dc3022ff465b7797f.exe
448	a7c9e0bba10b853dd183f2c6b732bd0e1001f1a7b455007dc3022ff465b7797f.exe
448	a7c9e0bba10b853dd183f2c6b732bd0e1001f1a7b455007dc3022ff465b7797f.exe
448	a7c9e0bba10b853dd183f2c6b732bd0e1001f1a7b455007dc3022ff465b7797f.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	448	a7c9e0bba10b853dd183f2c6b732bd0e1001f1a7b455007dc3022ff465b7797f.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 448 wrote to memory of 1704	448	a7c9e0bba10b853dd183f2c6b732bd0e1001f1a7b455007dc3022ff465b7797f.exe	88
PID 448 wrote to memory of 1704	448	a7c9e0bba10b853dd183f2c6b732bd0e1001f1a7b455007dc3022ff465b7797f.exe	88
PID 448 wrote to memory of 1704	448	a7c9e0bba10b853dd183f2c6b732bd0e1001f1a7b455007dc3022ff465b7797f.exe	88
PID 448 wrote to memory of 3328	448	a7c9e0bba10b853dd183f2c6b732bd0e1001f1a7b455007dc3022ff465b7797f.exe	89
PID 448 wrote to memory of 3328	448	a7c9e0bba10b853dd183f2c6b732bd0e1001f1a7b455007dc3022ff465b7797f.exe	89
PID 448 wrote to memory of 3328	448	a7c9e0bba10b853dd183f2c6b732bd0e1001f1a7b455007dc3022ff465b7797f.exe	89
PID 448 wrote to memory of 3244	448	a7c9e0bba10b853dd183f2c6b732bd0e1001f1a7b455007dc3022ff465b7797f.exe	90
PID 448 wrote to memory of 3244	448	a7c9e0bba10b853dd183f2c6b732bd0e1001f1a7b455007dc3022ff465b7797f.exe	90
PID 448 wrote to memory of 3244	448	a7c9e0bba10b853dd183f2c6b732bd0e1001f1a7b455007dc3022ff465b7797f.exe	90
PID 448 wrote to memory of 1940	448	a7c9e0bba10b853dd183f2c6b732bd0e1001f1a7b455007dc3022ff465b7797f.exe	91
PID 448 wrote to memory of 1940	448	a7c9e0bba10b853dd183f2c6b732bd0e1001f1a7b455007dc3022ff465b7797f.exe	91
PID 448 wrote to memory of 1940	448	a7c9e0bba10b853dd183f2c6b732bd0e1001f1a7b455007dc3022ff465b7797f.exe	91
PID 448 wrote to memory of 1940	448	a7c9e0bba10b853dd183f2c6b732bd0e1001f1a7b455007dc3022ff465b7797f.exe	91
PID 448 wrote to memory of 1940	448	a7c9e0bba10b853dd183f2c6b732bd0e1001f1a7b455007dc3022ff465b7797f.exe	91
PID 448 wrote to memory of 1940	448	a7c9e0bba10b853dd183f2c6b732bd0e1001f1a7b455007dc3022ff465b7797f.exe	91
PID 448 wrote to memory of 1940	448	a7c9e0bba10b853dd183f2c6b732bd0e1001f1a7b455007dc3022ff465b7797f.exe	91
PID 448 wrote to memory of 1940	448	a7c9e0bba10b853dd183f2c6b732bd0e1001f1a7b455007dc3022ff465b7797f.exe	91
PID 448 wrote to memory of 1940	448	a7c9e0bba10b853dd183f2c6b732bd0e1001f1a7b455007dc3022ff465b7797f.exe	91

C:\Users\Admin\AppData\Local\Temp\a7c9e0bba10b853dd183f2c6b732bd0e1001f1a7b455007dc3022ff465b7797f.exe
"C:\Users\Admin\AppData\Local\Temp\a7c9e0bba10b853dd183f2c6b732bd0e1001f1a7b455007dc3022ff465b7797f.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:448
- C:\Users\Admin\AppData\Local\Temp\a7c9e0bba10b853dd183f2c6b732bd0e1001f1a7b455007dc3022ff465b7797f.exe
  "C:\Users\Admin\AppData\Local\Temp\a7c9e0bba10b853dd183f2c6b732bd0e1001f1a7b455007dc3022ff465b7797f.exe"
  2⤵
  PID:1704
- C:\Users\Admin\AppData\Local\Temp\a7c9e0bba10b853dd183f2c6b732bd0e1001f1a7b455007dc3022ff465b7797f.exe
  "C:\Users\Admin\AppData\Local\Temp\a7c9e0bba10b853dd183f2c6b732bd0e1001f1a7b455007dc3022ff465b7797f.exe"
  2⤵
  PID:3328
- C:\Users\Admin\AppData\Local\Temp\a7c9e0bba10b853dd183f2c6b732bd0e1001f1a7b455007dc3022ff465b7797f.exe
  "C:\Users\Admin\AppData\Local\Temp\a7c9e0bba10b853dd183f2c6b732bd0e1001f1a7b455007dc3022ff465b7797f.exe"
  2⤵
  PID:3244
- C:\Users\Admin\AppData\Local\Temp\a7c9e0bba10b853dd183f2c6b732bd0e1001f1a7b455007dc3022ff465b7797f.exe
  "C:\Users\Admin\AppData\Local\Temp\a7c9e0bba10b853dd183f2c6b732bd0e1001f1a7b455007dc3022ff465b7797f.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1940
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1940 -s 1812
    3⤵
    - Program crash
    PID:4804

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 1940 -ip 1940
1⤵
PID:4756

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

msvcp140.dll

Path C:\ProgramData\msvcp140.dll
Size 9KB
SHA256 c892eebf96c4eb7444aa3116fa318bcdad68df616062357f196d8cb46a2afaf1
MD5 f3f655cbfc50fc8fffa3a8f0d902dfd5
SHA1 8e8f5d961a2a994a58c9c32dc9baf5f17c83b2af
SHA512 82b45485049cd0defec35b0680db504caea3d4916d1e3557f883cb2bfddcb0568cc56c4ab5d04df2f8eaac492321414527bfac3ad1df9987ae95502dc218dbc7
SSDEEP 192:rlYHC0HNXGZkHQU7ydPJq5S2KqQVX/uTK3w3DK+tMy47R/Ga0kVhFuPwf8Pn93Jh:FVGaRF8I8p+j+oJ+
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/448-6-0x0000000075220000-0x00000000759D0000-memory.dmp

Download

memory/448-8-0x00000000057F0000-0x00000000057FA000-memory.dmp

Download

memory/448-3-0x00000000060E0000-0x0000000006684000-memory.dmp

Download

memory/448-4-0x0000000005CD0000-0x0000000005D62000-memory.dmp

Download

memory/448-5-0x0000000005D70000-0x0000000005E0C000-memory.dmp

Download

memory/448-0-0x000000007522E000-0x000000007522F000-memory.dmp

Download

memory/448-1-0x0000000000DB0000-0x0000000000E1C000-memory.dmp

Download

memory/448-14-0x0000000075220000-0x00000000759D0000-memory.dmp

Download

memory/448-2-0x0000000005750000-0x0000000005756000-memory.dmp

Download

memory/1940-10-0x0000000000400000-0x0000000000438000-memory.dmp

Download

memory/1940-13-0x0000000000400000-0x0000000000438000-memory.dmp

Download

memory/1940-11-0x0000000000400000-0x0000000000438000-memory.dmp

Download

memory/1940-9-0x0000000000400000-0x0000000000438000-memory.dmp

Download

memory/1940-31-0x0000000000400000-0x0000000000438000-memory.dmp

Download