oski | 403a06f12a91f00f5834250436d0050c6387fee2c74101d0aa9697940a294b56

General

Target

403a06f12a91f00f5834250436d0050c6387fee2c74101d0aa9697940a294b56.exe
Size

491KB
MD5

6800f4c8b2d1326dab120a6ad2b99ff6
SHA1

d45ad1d4567dd41b9676885c1d7c5e5ef8fe5fc0
SHA256

403a06f12a91f00f5834250436d0050c6387fee2c74101d0aa9697940a294b56
SHA512

7bc232c8e430b21a962bc37e094df0a0400a04353f3f776dd851b4c8141caf949076c7537ad995cef536df768225103bb88cb437a9cd14f9218a2572c3f6a54b

Score

10^/10

oski infostealer spyware stealer

Malware Config

Extracted

Family

oski

C2

a343345.me

Signatures

Oski
Oski is an infostealer targeting browser data, crypto wallets.
infostealer oski
Executes dropped EXE 1 IoCs

Processes:

svchost.exe

pid process

1328 svchost.exe
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

pid	process
1328	svchost.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

403a06f12a91f00f5834250436d0050c6387fee2c74101d0aa9697940a294b56.exe

description	pid	process	target process
PID 2408 set thread context of 1328	2408	403a06f12a91f00f5834250436d0050c6387fee2c74101d0aa9697940a294b56.exe	svchost.exe

Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

4792 1328 WerFault.exe svchost.exe

pid	pid_target	process	target process
4792	1328	WerFault.exe	svchost.exe

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

403a06f12a91f00f5834250436d0050c6387fee2c74101d0aa9697940a294b56.exe

description	pid	process	target process
PID 2408 wrote to memory of 1328	2408	403a06f12a91f00f5834250436d0050c6387fee2c74101d0aa9697940a294b56.exe	svchost.exe
PID 2408 wrote to memory of 1328	2408	403a06f12a91f00f5834250436d0050c6387fee2c74101d0aa9697940a294b56.exe	svchost.exe
PID 2408 wrote to memory of 1328	2408	403a06f12a91f00f5834250436d0050c6387fee2c74101d0aa9697940a294b56.exe	svchost.exe
PID 2408 wrote to memory of 1328	2408	403a06f12a91f00f5834250436d0050c6387fee2c74101d0aa9697940a294b56.exe	svchost.exe
PID 2408 wrote to memory of 1328	2408	403a06f12a91f00f5834250436d0050c6387fee2c74101d0aa9697940a294b56.exe	svchost.exe
PID 2408 wrote to memory of 1328	2408	403a06f12a91f00f5834250436d0050c6387fee2c74101d0aa9697940a294b56.exe	svchost.exe
PID 2408 wrote to memory of 1328	2408	403a06f12a91f00f5834250436d0050c6387fee2c74101d0aa9697940a294b56.exe	svchost.exe
PID 2408 wrote to memory of 1328	2408	403a06f12a91f00f5834250436d0050c6387fee2c74101d0aa9697940a294b56.exe	svchost.exe
PID 2408 wrote to memory of 1328	2408	403a06f12a91f00f5834250436d0050c6387fee2c74101d0aa9697940a294b56.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\403a06f12a91f00f5834250436d0050c6387fee2c74101d0aa9697940a294b56.exe
"C:\Users\Admin\AppData\Local\Temp\403a06f12a91f00f5834250436d0050c6387fee2c74101d0aa9697940a294b56.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2408

C:\Users\Admin\AppData\Local\Temp\svchost.exe
C:\Users\Admin\AppData\Local\Temp\svchost.exe
2⤵
- Executes dropped EXE
PID:1328

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1328 -s 1340
3⤵
- Program crash
PID:4792

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1328 -ip 1328
1⤵
PID:3868

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

1

T1081

Discovery

Lateral Movement

Collection

Data from Local System

1

T1005

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\svchost.exe
Filesize
1.1MB

MD5
d881de17aa8f2e2c08cbb7b265f928f9

SHA1
08936aebc87decf0af6e8eada191062b5e65ac2a

SHA256
b3a37093609f9a20ad60b85a9fa9de2ba674cba9b5bd687729440c70ba619ca0

SHA512
5f23bfb1b8740247b36ed0ab741738c7d4c949736129e767213e321607d1ccd3e3a8428e4ba44bd28a275b5e3f6206285b1a522514b7ef7ea5e698d90a713d34

Download Submit
C:\Users\Admin\AppData\Local\Temp\svchost.exe
Filesize
1.1MB

MD5
d881de17aa8f2e2c08cbb7b265f928f9

SHA1
08936aebc87decf0af6e8eada191062b5e65ac2a

SHA256
b3a37093609f9a20ad60b85a9fa9de2ba674cba9b5bd687729440c70ba619ca0

SHA512
5f23bfb1b8740247b36ed0ab741738c7d4c949736129e767213e321607d1ccd3e3a8428e4ba44bd28a275b5e3f6206285b1a522514b7ef7ea5e698d90a713d34

Download Submit
memory/1328-130-0x0000000000000000-mapping.dmp

Download
memory/1328-131-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1328-135-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1328-134-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1328-136-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1328-138-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2408-137-0x00000000746F0000-0x0000000074CA1000-memory.dmp

Filesize
5.7MB

Download

Analysis

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