oski | e5c692ae3dc9c88bd07613f088686835c2e4ea2755c6abbdc01bac7bce5b924a

General

Target

3c7485ba08cb4cb5c9af2fd0e670efee.exe
Size

1.1MB
MD5

3c7485ba08cb4cb5c9af2fd0e670efee
SHA1

bb0a4d2f63e42b269f9d7b9b894fb731093cda9e
SHA256

e5c692ae3dc9c88bd07613f088686835c2e4ea2755c6abbdc01bac7bce5b924a
SHA512

8a8095eb685cbbf0cbed9c4cc11bd4b86d56c60922a6625dc86546f37dfe0c356a4066832e2e60083342c1a1e3749d6ca2f09c894779f055fac9e9c8c03b43c0
SSDEEP

12288:Hg5BQaiYOSaDV5bvh2days0tGLKe+ML+QrX/6GXVUJsSgWiE9Y:A5BQaT2DLNl90tGn+hQr/nsn9Y

Score

10^/10

oski infostealer spyware stealer

Malware Config

Extracted

Family

oski

C2

2tril.com

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 2708 set thread context of 1440	2708	3c7485ba08cb4cb5c9af2fd0e670efee.exe	29

Program crash 1 IoCs

pid	pid_target	Process	procid_target
856	1440	WerFault.exe	29

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 2708 wrote to memory of 1440	2708	3c7485ba08cb4cb5c9af2fd0e670efee.exe	29
PID 2708 wrote to memory of 1440	2708	3c7485ba08cb4cb5c9af2fd0e670efee.exe	29
PID 2708 wrote to memory of 1440	2708	3c7485ba08cb4cb5c9af2fd0e670efee.exe	29
PID 2708 wrote to memory of 1440	2708	3c7485ba08cb4cb5c9af2fd0e670efee.exe	29
PID 2708 wrote to memory of 1440	2708	3c7485ba08cb4cb5c9af2fd0e670efee.exe	29
PID 2708 wrote to memory of 1440	2708	3c7485ba08cb4cb5c9af2fd0e670efee.exe	29
PID 2708 wrote to memory of 1440	2708	3c7485ba08cb4cb5c9af2fd0e670efee.exe	29
PID 2708 wrote to memory of 1440	2708	3c7485ba08cb4cb5c9af2fd0e670efee.exe	29
PID 2708 wrote to memory of 1440	2708	3c7485ba08cb4cb5c9af2fd0e670efee.exe	29
PID 2708 wrote to memory of 1440	2708	3c7485ba08cb4cb5c9af2fd0e670efee.exe	29
PID 1440 wrote to memory of 856	1440	3c7485ba08cb4cb5c9af2fd0e670efee.exe	32
PID 1440 wrote to memory of 856	1440	3c7485ba08cb4cb5c9af2fd0e670efee.exe	32
PID 1440 wrote to memory of 856	1440	3c7485ba08cb4cb5c9af2fd0e670efee.exe	32
PID 1440 wrote to memory of 856	1440	3c7485ba08cb4cb5c9af2fd0e670efee.exe	32

C:\Users\Admin\AppData\Local\Temp\3c7485ba08cb4cb5c9af2fd0e670efee.exe
"C:\Users\Admin\AppData\Local\Temp\3c7485ba08cb4cb5c9af2fd0e670efee.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2708
- C:\Users\Admin\AppData\Local\Temp\3c7485ba08cb4cb5c9af2fd0e670efee.exe
  "C:\Users\Admin\AppData\Local\Temp\3c7485ba08cb4cb5c9af2fd0e670efee.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1440
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1440 -s 256
    3⤵
    - Program crash
    PID:856

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\ProgramData\msvcp140.dll

Filesize
150B

MD5
8b181bb6767bc5795dcf17341a387e5b

SHA1
b5e2a9fb1f8a4aad3c7127c769af4c780b47bef4

SHA256
32cbc376cd769a26d108ae31678f975b863b7066e110c59d9a212c7281bd8c81

SHA512
2550b61ffa1ef8dd2613704798e3a717321c8e3569849dcbfb3049f441b8bccf9287b7139f3cef3371c1bb0476da31523e5e83b6a81af3ebc4d91142e06c76c6

Download Submit
memory/1440-17-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1440-15-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1440-12-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1440-13-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1440-10-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1440-19-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1440-20-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1440-8-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1440-14-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2708-6-0x00000000055A0000-0x0000000005640000-memory.dmp

Filesize
640KB

Download
memory/2708-4-0x0000000074B90000-0x000000007527E000-memory.dmp

Filesize
6.9MB

Download
memory/2708-0-0x0000000074B90000-0x000000007527E000-memory.dmp

Filesize
6.9MB

Download
memory/2708-3-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download
memory/2708-1-0x00000000009C0000-0x0000000000ADA000-memory.dmp

Filesize
1.1MB

Download
memory/2708-21-0x0000000074B90000-0x000000007527E000-memory.dmp

Filesize
6.9MB

Download
memory/2708-7-0x0000000005740000-0x00000000057B6000-memory.dmp

Filesize
472KB

Download
memory/2708-2-0x0000000004E80000-0x0000000004EC0000-memory.dmp

Filesize
256KB

Download
memory/2708-5-0x0000000004E80000-0x0000000004EC0000-memory.dmp

Filesize
256KB

Download

Analysis

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