oski | 488482565caeb316c3182e323a178f0357878a3b564bb22abff6ffb01feb051a

Analysis

max time kernel
122s
max time network
123s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
31-12-2023 11:52

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General

Target

3519d9884a37f6e79b9e5f19b97a3d99.exe
Size

1.3MB
MD5

3519d9884a37f6e79b9e5f19b97a3d99
SHA1

49d06c39e5664977651d4e16d00ebcad6659917c
SHA256

488482565caeb316c3182e323a178f0357878a3b564bb22abff6ffb01feb051a
SHA512

a5f8fbd4197a4962f75d30fab5c6c7de0f5e0b137dc5de8cad10a25bdaf9ff60a78fd35bdb9fbb2402762e0332a445974d92284ee39169505282be17051d0060
SSDEEP

24576:TsV676DOVfx8Dgyfx8Dg1TQU8vYB7r+UCmDW0t5xSNwDZZGL:W676c58Dgy58DgNQU8+dk0dSCZU

Score

10^/10

oski infostealer spyware stealer

Malware Config

Extracted

Family

oski

http://2.56.59.226/www/

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
T1552.001

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1940 set thread context of 2812	1940	3519d9884a37f6e79b9e5f19b97a3d99.exe	29

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1664	2812	WerFault.exe	29

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 1940 wrote to memory of 2812	1940	3519d9884a37f6e79b9e5f19b97a3d99.exe	29
PID 1940 wrote to memory of 2812	1940	3519d9884a37f6e79b9e5f19b97a3d99.exe	29
PID 1940 wrote to memory of 2812	1940	3519d9884a37f6e79b9e5f19b97a3d99.exe	29
PID 1940 wrote to memory of 2812	1940	3519d9884a37f6e79b9e5f19b97a3d99.exe	29
PID 1940 wrote to memory of 2812	1940	3519d9884a37f6e79b9e5f19b97a3d99.exe	29
PID 1940 wrote to memory of 2812	1940	3519d9884a37f6e79b9e5f19b97a3d99.exe	29
PID 1940 wrote to memory of 2812	1940	3519d9884a37f6e79b9e5f19b97a3d99.exe	29
PID 1940 wrote to memory of 2812	1940	3519d9884a37f6e79b9e5f19b97a3d99.exe	29
PID 1940 wrote to memory of 2812	1940	3519d9884a37f6e79b9e5f19b97a3d99.exe	29
PID 1940 wrote to memory of 2812	1940	3519d9884a37f6e79b9e5f19b97a3d99.exe	29
PID 1940 wrote to memory of 2812	1940	3519d9884a37f6e79b9e5f19b97a3d99.exe	29
PID 2812 wrote to memory of 1664	2812	3519d9884a37f6e79b9e5f19b97a3d99.exe	33
PID 2812 wrote to memory of 1664	2812	3519d9884a37f6e79b9e5f19b97a3d99.exe	33
PID 2812 wrote to memory of 1664	2812	3519d9884a37f6e79b9e5f19b97a3d99.exe	33
PID 2812 wrote to memory of 1664	2812	3519d9884a37f6e79b9e5f19b97a3d99.exe	33

C:\Users\Admin\AppData\Local\Temp\3519d9884a37f6e79b9e5f19b97a3d99.exe
"C:\Users\Admin\AppData\Local\Temp\3519d9884a37f6e79b9e5f19b97a3d99.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1940
- C:\Users\Admin\AppData\Local\Temp\3519d9884a37f6e79b9e5f19b97a3d99.exe
  "C:\Users\Admin\AppData\Local\Temp\3519d9884a37f6e79b9e5f19b97a3d99.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2812
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2812 -s 620
    3⤵
    - Program crash
    PID:1664

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1940-21-0x0000000074A40000-0x000000007512E000-memory.dmp

Filesize
6.9MB

Download
memory/1940-1-0x0000000074A40000-0x000000007512E000-memory.dmp

Filesize
6.9MB

Download
memory/1940-2-0x0000000004E00000-0x0000000004E40000-memory.dmp

Filesize
256KB

Download
memory/1940-3-0x0000000000300000-0x0000000000312000-memory.dmp

Filesize
72KB

Download
memory/1940-4-0x0000000074A40000-0x000000007512E000-memory.dmp

Filesize
6.9MB

Download
memory/1940-5-0x0000000004E00000-0x0000000004E40000-memory.dmp

Filesize
256KB

Download
memory/1940-6-0x000000000A550000-0x000000000A5FE000-memory.dmp

Filesize
696KB

Download
memory/1940-7-0x0000000000790000-0x00000000007F4000-memory.dmp

Filesize
400KB

Download
memory/1940-0-0x0000000001390000-0x00000000014EC000-memory.dmp

Filesize
1.4MB

Download
memory/2812-22-0x0000000000400000-0x0000000000464000-memory.dmp

Filesize
400KB

Download
memory/2812-20-0x0000000000400000-0x0000000000464000-memory.dmp

Filesize
400KB

Download
memory/2812-18-0x0000000000400000-0x0000000000464000-memory.dmp

Filesize
400KB

Download
memory/2812-16-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2812-15-0x0000000000400000-0x0000000000464000-memory.dmp

Filesize
400KB

Download
memory/2812-14-0x0000000000400000-0x0000000000464000-memory.dmp

Filesize
400KB

Download
memory/2812-13-0x0000000000400000-0x0000000000464000-memory.dmp

Filesize
400KB

Download
memory/2812-12-0x0000000000400000-0x0000000000464000-memory.dmp

Filesize
400KB

Download
memory/2812-8-0x0000000000400000-0x0000000000464000-memory.dmp

Filesize
400KB

Download
memory/2812-10-0x0000000000400000-0x0000000000464000-memory.dmp

Filesize
400KB

Download