oski | b6fd01dfdc4bf70cafeba291f6195eb1eb74589ebbbaf8d66f32efbc079d4caf

Analysis

max time kernel
51s
max time network
49s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
29-01-2023 19:43

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General

Target

b6fd01dfdc4bf70cafeba291f6195eb1eb74589ebbbaf8d66f32efbc079d4caf.exe
Size

310KB
MD5

f2ad6ac9e0bc7297c13a28f6d6af85a5
SHA1

af31c785efd47081181f8d030b97dca8f372700a
SHA256

b6fd01dfdc4bf70cafeba291f6195eb1eb74589ebbbaf8d66f32efbc079d4caf
SHA512

22dba23872534504680cfc78631be8aa5bb7462b293078758aa77663fd09c74ed871b5f230235c7092c2ecc67bc14fe98984d9c80f115f05623797dd1b62f645
SSDEEP

6144:W5kNQIVGURZU/kb+K8FAZdKPznvNYTAOjjhLnWQvdFCEWPQczgZyKxxlH:W5TQRZUG+KAqdKrvOTnZtVjWPQczsnp

Score

10^/10

oski infostealer spyware stealer

Malware Config

Extracted

Family

oski

timecforgoodnes.ml

Signatures

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

Executes dropped EXE 1 IoCs

pid	Process
612	b6fd01dfdc4bf70cafeba291f6195eb1eb74589ebbbaf8d66f32efbc079d4caf.exe

Drops startup file 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\system.js	b6fd01dfdc4bf70cafeba291f6195eb1eb74589ebbbaf8d66f32efbc079d4caf.exe

Loads dropped DLL 9 IoCs

pid	Process
1884	b6fd01dfdc4bf70cafeba291f6195eb1eb74589ebbbaf8d66f32efbc079d4caf.exe
612	b6fd01dfdc4bf70cafeba291f6195eb1eb74589ebbbaf8d66f32efbc079d4caf.exe
612	b6fd01dfdc4bf70cafeba291f6195eb1eb74589ebbbaf8d66f32efbc079d4caf.exe
612	b6fd01dfdc4bf70cafeba291f6195eb1eb74589ebbbaf8d66f32efbc079d4caf.exe
1248	WerFault.exe
1248	WerFault.exe
1248	WerFault.exe
1248	WerFault.exe
1248	WerFault.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

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1884 set thread context of 612	1884	b6fd01dfdc4bf70cafeba291f6195eb1eb74589ebbbaf8d66f32efbc079d4caf.exe	27

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1248	612	WerFault.exe	27

Suspicious behavior: EnumeratesProcesses 7 IoCs

pid	Process
1884	b6fd01dfdc4bf70cafeba291f6195eb1eb74589ebbbaf8d66f32efbc079d4caf.exe
1884	b6fd01dfdc4bf70cafeba291f6195eb1eb74589ebbbaf8d66f32efbc079d4caf.exe
1884	b6fd01dfdc4bf70cafeba291f6195eb1eb74589ebbbaf8d66f32efbc079d4caf.exe
1884	b6fd01dfdc4bf70cafeba291f6195eb1eb74589ebbbaf8d66f32efbc079d4caf.exe
1884	b6fd01dfdc4bf70cafeba291f6195eb1eb74589ebbbaf8d66f32efbc079d4caf.exe
1884	b6fd01dfdc4bf70cafeba291f6195eb1eb74589ebbbaf8d66f32efbc079d4caf.exe
1884	b6fd01dfdc4bf70cafeba291f6195eb1eb74589ebbbaf8d66f32efbc079d4caf.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1884	b6fd01dfdc4bf70cafeba291f6195eb1eb74589ebbbaf8d66f32efbc079d4caf.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 1884 wrote to memory of 612	1884	b6fd01dfdc4bf70cafeba291f6195eb1eb74589ebbbaf8d66f32efbc079d4caf.exe	27
PID 1884 wrote to memory of 612	1884	b6fd01dfdc4bf70cafeba291f6195eb1eb74589ebbbaf8d66f32efbc079d4caf.exe	27
PID 1884 wrote to memory of 612	1884	b6fd01dfdc4bf70cafeba291f6195eb1eb74589ebbbaf8d66f32efbc079d4caf.exe	27
PID 1884 wrote to memory of 612	1884	b6fd01dfdc4bf70cafeba291f6195eb1eb74589ebbbaf8d66f32efbc079d4caf.exe	27
PID 1884 wrote to memory of 612	1884	b6fd01dfdc4bf70cafeba291f6195eb1eb74589ebbbaf8d66f32efbc079d4caf.exe	27
PID 1884 wrote to memory of 612	1884	b6fd01dfdc4bf70cafeba291f6195eb1eb74589ebbbaf8d66f32efbc079d4caf.exe	27
PID 1884 wrote to memory of 612	1884	b6fd01dfdc4bf70cafeba291f6195eb1eb74589ebbbaf8d66f32efbc079d4caf.exe	27
PID 1884 wrote to memory of 612	1884	b6fd01dfdc4bf70cafeba291f6195eb1eb74589ebbbaf8d66f32efbc079d4caf.exe	27
PID 1884 wrote to memory of 612	1884	b6fd01dfdc4bf70cafeba291f6195eb1eb74589ebbbaf8d66f32efbc079d4caf.exe	27
PID 1884 wrote to memory of 612	1884	b6fd01dfdc4bf70cafeba291f6195eb1eb74589ebbbaf8d66f32efbc079d4caf.exe	27
PID 1884 wrote to memory of 612	1884	b6fd01dfdc4bf70cafeba291f6195eb1eb74589ebbbaf8d66f32efbc079d4caf.exe	27
PID 1884 wrote to memory of 612	1884	b6fd01dfdc4bf70cafeba291f6195eb1eb74589ebbbaf8d66f32efbc079d4caf.exe	27
PID 1884 wrote to memory of 612	1884	b6fd01dfdc4bf70cafeba291f6195eb1eb74589ebbbaf8d66f32efbc079d4caf.exe	27
PID 612 wrote to memory of 1248	612	b6fd01dfdc4bf70cafeba291f6195eb1eb74589ebbbaf8d66f32efbc079d4caf.exe	30
PID 612 wrote to memory of 1248	612	b6fd01dfdc4bf70cafeba291f6195eb1eb74589ebbbaf8d66f32efbc079d4caf.exe	30
PID 612 wrote to memory of 1248	612	b6fd01dfdc4bf70cafeba291f6195eb1eb74589ebbbaf8d66f32efbc079d4caf.exe	30
PID 612 wrote to memory of 1248	612	b6fd01dfdc4bf70cafeba291f6195eb1eb74589ebbbaf8d66f32efbc079d4caf.exe	30
PID 612 wrote to memory of 1248	612	b6fd01dfdc4bf70cafeba291f6195eb1eb74589ebbbaf8d66f32efbc079d4caf.exe	30
PID 612 wrote to memory of 1248	612	b6fd01dfdc4bf70cafeba291f6195eb1eb74589ebbbaf8d66f32efbc079d4caf.exe	30
PID 612 wrote to memory of 1248	612	b6fd01dfdc4bf70cafeba291f6195eb1eb74589ebbbaf8d66f32efbc079d4caf.exe	30

C:\Users\Admin\AppData\Local\Temp\b6fd01dfdc4bf70cafeba291f6195eb1eb74589ebbbaf8d66f32efbc079d4caf.exe
"C:\Users\Admin\AppData\Local\Temp\b6fd01dfdc4bf70cafeba291f6195eb1eb74589ebbbaf8d66f32efbc079d4caf.exe"
1⤵
- Drops startup file
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1884
- C:\Users\Admin\AppData\Local\Temp\b6fd01dfdc4bf70cafeba291f6195eb1eb74589ebbbaf8d66f32efbc079d4caf.exe
  "C:\Users\Admin\AppData\Local\Temp\b6fd01dfdc4bf70cafeba291f6195eb1eb74589ebbbaf8d66f32efbc079d4caf.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of WriteProcessMemory
  PID:612
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 612 -s 908
    3⤵
    - Loads dropped DLL
    - Program crash
    PID:1248

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

T1081

Discovery

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\b6fd01dfdc4bf70cafeba291f6195eb1eb74589ebbbaf8d66f32efbc079d4caf.exe

Filesize
310KB

MD5
f2ad6ac9e0bc7297c13a28f6d6af85a5

SHA1
af31c785efd47081181f8d030b97dca8f372700a

SHA256
b6fd01dfdc4bf70cafeba291f6195eb1eb74589ebbbaf8d66f32efbc079d4caf

SHA512
22dba23872534504680cfc78631be8aa5bb7462b293078758aa77663fd09c74ed871b5f230235c7092c2ecc67bc14fe98984d9c80f115f05623797dd1b62f645

Download Submit
\Users\Admin\AppData\Local\Temp\b6fd01dfdc4bf70cafeba291f6195eb1eb74589ebbbaf8d66f32efbc079d4caf.exe

Filesize
310KB

MD5
f2ad6ac9e0bc7297c13a28f6d6af85a5

SHA1
af31c785efd47081181f8d030b97dca8f372700a

SHA256
b6fd01dfdc4bf70cafeba291f6195eb1eb74589ebbbaf8d66f32efbc079d4caf

SHA512
22dba23872534504680cfc78631be8aa5bb7462b293078758aa77663fd09c74ed871b5f230235c7092c2ecc67bc14fe98984d9c80f115f05623797dd1b62f645

Download Submit
\Users\Admin\AppData\Local\Temp\b6fd01dfdc4bf70cafeba291f6195eb1eb74589ebbbaf8d66f32efbc079d4caf.exe

Filesize
310KB

MD5
f2ad6ac9e0bc7297c13a28f6d6af85a5

SHA1
af31c785efd47081181f8d030b97dca8f372700a

SHA256
b6fd01dfdc4bf70cafeba291f6195eb1eb74589ebbbaf8d66f32efbc079d4caf

SHA512
22dba23872534504680cfc78631be8aa5bb7462b293078758aa77663fd09c74ed871b5f230235c7092c2ecc67bc14fe98984d9c80f115f05623797dd1b62f645

Download Submit
\Users\Admin\AppData\Local\Temp\b6fd01dfdc4bf70cafeba291f6195eb1eb74589ebbbaf8d66f32efbc079d4caf.exe

Filesize
310KB

MD5
f2ad6ac9e0bc7297c13a28f6d6af85a5

SHA1
af31c785efd47081181f8d030b97dca8f372700a

SHA256
b6fd01dfdc4bf70cafeba291f6195eb1eb74589ebbbaf8d66f32efbc079d4caf

SHA512
22dba23872534504680cfc78631be8aa5bb7462b293078758aa77663fd09c74ed871b5f230235c7092c2ecc67bc14fe98984d9c80f115f05623797dd1b62f645

Download Submit
\Users\Admin\AppData\Local\Temp\b6fd01dfdc4bf70cafeba291f6195eb1eb74589ebbbaf8d66f32efbc079d4caf.exe

Filesize
310KB

MD5
f2ad6ac9e0bc7297c13a28f6d6af85a5

SHA1
af31c785efd47081181f8d030b97dca8f372700a

SHA256
b6fd01dfdc4bf70cafeba291f6195eb1eb74589ebbbaf8d66f32efbc079d4caf

SHA512
22dba23872534504680cfc78631be8aa5bb7462b293078758aa77663fd09c74ed871b5f230235c7092c2ecc67bc14fe98984d9c80f115f05623797dd1b62f645

Download Submit
\Users\Admin\AppData\Local\Temp\b6fd01dfdc4bf70cafeba291f6195eb1eb74589ebbbaf8d66f32efbc079d4caf.exe

Filesize
310KB

MD5
f2ad6ac9e0bc7297c13a28f6d6af85a5

SHA1
af31c785efd47081181f8d030b97dca8f372700a

SHA256
b6fd01dfdc4bf70cafeba291f6195eb1eb74589ebbbaf8d66f32efbc079d4caf

SHA512
22dba23872534504680cfc78631be8aa5bb7462b293078758aa77663fd09c74ed871b5f230235c7092c2ecc67bc14fe98984d9c80f115f05623797dd1b62f645

Download Submit
\Users\Admin\AppData\Local\Temp\b6fd01dfdc4bf70cafeba291f6195eb1eb74589ebbbaf8d66f32efbc079d4caf.exe

Filesize
310KB

MD5
f2ad6ac9e0bc7297c13a28f6d6af85a5

SHA1
af31c785efd47081181f8d030b97dca8f372700a

SHA256
b6fd01dfdc4bf70cafeba291f6195eb1eb74589ebbbaf8d66f32efbc079d4caf

SHA512
22dba23872534504680cfc78631be8aa5bb7462b293078758aa77663fd09c74ed871b5f230235c7092c2ecc67bc14fe98984d9c80f115f05623797dd1b62f645

Download Submit
\Users\Admin\AppData\Local\Temp\b6fd01dfdc4bf70cafeba291f6195eb1eb74589ebbbaf8d66f32efbc079d4caf.exe

Filesize
310KB

MD5
f2ad6ac9e0bc7297c13a28f6d6af85a5

SHA1
af31c785efd47081181f8d030b97dca8f372700a

SHA256
b6fd01dfdc4bf70cafeba291f6195eb1eb74589ebbbaf8d66f32efbc079d4caf

SHA512
22dba23872534504680cfc78631be8aa5bb7462b293078758aa77663fd09c74ed871b5f230235c7092c2ecc67bc14fe98984d9c80f115f05623797dd1b62f645

Download Submit
\Users\Admin\AppData\Local\Temp\b6fd01dfdc4bf70cafeba291f6195eb1eb74589ebbbaf8d66f32efbc079d4caf.exe

Filesize
310KB

MD5
f2ad6ac9e0bc7297c13a28f6d6af85a5

SHA1
af31c785efd47081181f8d030b97dca8f372700a

SHA256
b6fd01dfdc4bf70cafeba291f6195eb1eb74589ebbbaf8d66f32efbc079d4caf

SHA512
22dba23872534504680cfc78631be8aa5bb7462b293078758aa77663fd09c74ed871b5f230235c7092c2ecc67bc14fe98984d9c80f115f05623797dd1b62f645

Download Submit
\Users\Admin\AppData\Local\Temp\b6fd01dfdc4bf70cafeba291f6195eb1eb74589ebbbaf8d66f32efbc079d4caf.exe

Filesize
310KB

MD5
f2ad6ac9e0bc7297c13a28f6d6af85a5

SHA1
af31c785efd47081181f8d030b97dca8f372700a

SHA256
b6fd01dfdc4bf70cafeba291f6195eb1eb74589ebbbaf8d66f32efbc079d4caf

SHA512
22dba23872534504680cfc78631be8aa5bb7462b293078758aa77663fd09c74ed871b5f230235c7092c2ecc67bc14fe98984d9c80f115f05623797dd1b62f645

Download Submit
memory/612-65-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/612-67-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/612-58-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/612-72-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/612-85-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/612-63-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/612-61-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/612-78-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/612-59-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1884-54-0x0000000076171000-0x0000000076173000-memory.dmp

Filesize
8KB

Download
memory/1884-71-0x00000000749B0000-0x0000000074F5B000-memory.dmp

Filesize
5.7MB

Download
memory/1884-56-0x00000000749B0000-0x0000000074F5B000-memory.dmp

Filesize
5.7MB

Download
memory/1884-55-0x00000000749B0000-0x0000000074F5B000-memory.dmp

Filesize
5.7MB

Download