oski | 6b869d8825516d0b977d48043d1d56d233de7b128074b068566dc33e0ff9fdb7

General

Target

6b869d8825516d0b977d48043d1d56d233de7b128074b068566dc33e0ff9fdb7.exe
Size

745KB
MD5

dd6f97becdd24e1c2c1b7662bb3760aa
SHA1

a2894d09e5fc6f0a5ee5ec27119b02ecbc2d9a79
SHA256

6b869d8825516d0b977d48043d1d56d233de7b128074b068566dc33e0ff9fdb7
SHA512

f352c4cfc3d878287e0f6a783ab803eccba5aee872321e18f2c6c15bca9aad6a47c441e52cb03b88f77cc853ee33988198703cdfbbc0bff0097163125c7e3cda

Score

10^/10

oski discovery infostealer spyware stealer

Malware Config

Extracted

Family

oski

C2

swsaseguranca.com.br

Signatures

Oski
Oski is an infostealer targeting browser data, crypto wallets.
infostealer oski
Downloads MZ/PE file

Loads dropped DLL 3 IoCs

Processes:

6b869d8825516d0b977d48043d1d56d233de7b128074b068566dc33e0ff9fdb7.exe

pid	process
2156	6b869d8825516d0b977d48043d1d56d233de7b128074b068566dc33e0ff9fdb7.exe
2156	6b869d8825516d0b977d48043d1d56d233de7b128074b068566dc33e0ff9fdb7.exe
2156	6b869d8825516d0b977d48043d1d56d233de7b128074b068566dc33e0ff9fdb7.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
Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

Data from Local System
T1005

Credentials in Files
T1081
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Suspicious use of SetThreadContext 1 IoCs

Processes:

6b869d8825516d0b977d48043d1d56d233de7b128074b068566dc33e0ff9fdb7.exe

description	pid	process	target process
PID 3472 set thread context of 2156	3472	6b869d8825516d0b977d48043d1d56d233de7b128074b068566dc33e0ff9fdb7.exe	6b869d8825516d0b977d48043d1d56d233de7b128074b068566dc33e0ff9fdb7.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Checks processor information in registry 2 TTPs 1 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

6b869d8825516d0b977d48043d1d56d233de7b128074b068566dc33e0ff9fdb7.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	6b869d8825516d0b977d48043d1d56d233de7b128074b068566dc33e0ff9fdb7.exe

Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task
T1053

Processes:

schtasks.exe

pid process

684 schtasks.exe
Kills process with taskkill 1 IoCs
evasion

Processes:

taskkill.exe

pid process

2076 taskkill.exe

pid	process
684	schtasks.exe

pid	process
2076	taskkill.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

Processes:

6b869d8825516d0b977d48043d1d56d233de7b128074b068566dc33e0ff9fdb7.exepowershell.exepowershell.exe

pid	process
3472	6b869d8825516d0b977d48043d1d56d233de7b128074b068566dc33e0ff9fdb7.exe
856	powershell.exe
504	powershell.exe
3472	6b869d8825516d0b977d48043d1d56d233de7b128074b068566dc33e0ff9fdb7.exe
504	powershell.exe
856	powershell.exe
504	powershell.exe
856	powershell.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

6b869d8825516d0b977d48043d1d56d233de7b128074b068566dc33e0ff9fdb7.exepowershell.exepowershell.exetaskkill.exe

description	pid	process
Token: SeDebugPrivilege	3472	6b869d8825516d0b977d48043d1d56d233de7b128074b068566dc33e0ff9fdb7.exe
Token: SeDebugPrivilege	504	powershell.exe
Token: SeDebugPrivilege	856	powershell.exe
Token: SeDebugPrivilege	2076	taskkill.exe

Suspicious use of WriteProcessMemory 24 IoCs

Processes:

6b869d8825516d0b977d48043d1d56d233de7b128074b068566dc33e0ff9fdb7.exe6b869d8825516d0b977d48043d1d56d233de7b128074b068566dc33e0ff9fdb7.execmd.exe

description	pid	process	target process
PID 3472 wrote to memory of 504	3472	6b869d8825516d0b977d48043d1d56d233de7b128074b068566dc33e0ff9fdb7.exe	powershell.exe
PID 3472 wrote to memory of 504	3472	6b869d8825516d0b977d48043d1d56d233de7b128074b068566dc33e0ff9fdb7.exe	powershell.exe
PID 3472 wrote to memory of 504	3472	6b869d8825516d0b977d48043d1d56d233de7b128074b068566dc33e0ff9fdb7.exe	powershell.exe
PID 3472 wrote to memory of 856	3472	6b869d8825516d0b977d48043d1d56d233de7b128074b068566dc33e0ff9fdb7.exe	powershell.exe
PID 3472 wrote to memory of 856	3472	6b869d8825516d0b977d48043d1d56d233de7b128074b068566dc33e0ff9fdb7.exe	powershell.exe
PID 3472 wrote to memory of 856	3472	6b869d8825516d0b977d48043d1d56d233de7b128074b068566dc33e0ff9fdb7.exe	powershell.exe
PID 3472 wrote to memory of 684	3472	6b869d8825516d0b977d48043d1d56d233de7b128074b068566dc33e0ff9fdb7.exe	schtasks.exe
PID 3472 wrote to memory of 684	3472	6b869d8825516d0b977d48043d1d56d233de7b128074b068566dc33e0ff9fdb7.exe	schtasks.exe
PID 3472 wrote to memory of 684	3472	6b869d8825516d0b977d48043d1d56d233de7b128074b068566dc33e0ff9fdb7.exe	schtasks.exe
PID 3472 wrote to memory of 2156	3472	6b869d8825516d0b977d48043d1d56d233de7b128074b068566dc33e0ff9fdb7.exe	6b869d8825516d0b977d48043d1d56d233de7b128074b068566dc33e0ff9fdb7.exe
PID 3472 wrote to memory of 2156	3472	6b869d8825516d0b977d48043d1d56d233de7b128074b068566dc33e0ff9fdb7.exe	6b869d8825516d0b977d48043d1d56d233de7b128074b068566dc33e0ff9fdb7.exe
PID 3472 wrote to memory of 2156	3472	6b869d8825516d0b977d48043d1d56d233de7b128074b068566dc33e0ff9fdb7.exe	6b869d8825516d0b977d48043d1d56d233de7b128074b068566dc33e0ff9fdb7.exe
PID 3472 wrote to memory of 2156	3472	6b869d8825516d0b977d48043d1d56d233de7b128074b068566dc33e0ff9fdb7.exe	6b869d8825516d0b977d48043d1d56d233de7b128074b068566dc33e0ff9fdb7.exe
PID 3472 wrote to memory of 2156	3472	6b869d8825516d0b977d48043d1d56d233de7b128074b068566dc33e0ff9fdb7.exe	6b869d8825516d0b977d48043d1d56d233de7b128074b068566dc33e0ff9fdb7.exe
PID 3472 wrote to memory of 2156	3472	6b869d8825516d0b977d48043d1d56d233de7b128074b068566dc33e0ff9fdb7.exe	6b869d8825516d0b977d48043d1d56d233de7b128074b068566dc33e0ff9fdb7.exe
PID 3472 wrote to memory of 2156	3472	6b869d8825516d0b977d48043d1d56d233de7b128074b068566dc33e0ff9fdb7.exe	6b869d8825516d0b977d48043d1d56d233de7b128074b068566dc33e0ff9fdb7.exe
PID 3472 wrote to memory of 2156	3472	6b869d8825516d0b977d48043d1d56d233de7b128074b068566dc33e0ff9fdb7.exe	6b869d8825516d0b977d48043d1d56d233de7b128074b068566dc33e0ff9fdb7.exe
PID 3472 wrote to memory of 2156	3472	6b869d8825516d0b977d48043d1d56d233de7b128074b068566dc33e0ff9fdb7.exe	6b869d8825516d0b977d48043d1d56d233de7b128074b068566dc33e0ff9fdb7.exe
PID 2156 wrote to memory of 2356	2156	6b869d8825516d0b977d48043d1d56d233de7b128074b068566dc33e0ff9fdb7.exe	cmd.exe
PID 2156 wrote to memory of 2356	2156	6b869d8825516d0b977d48043d1d56d233de7b128074b068566dc33e0ff9fdb7.exe	cmd.exe
PID 2156 wrote to memory of 2356	2156	6b869d8825516d0b977d48043d1d56d233de7b128074b068566dc33e0ff9fdb7.exe	cmd.exe
PID 2356 wrote to memory of 2076	2356	cmd.exe	taskkill.exe
PID 2356 wrote to memory of 2076	2356	cmd.exe	taskkill.exe
PID 2356 wrote to memory of 2076	2356	cmd.exe	taskkill.exe

C:\Users\Admin\AppData\Local\Temp\6b869d8825516d0b977d48043d1d56d233de7b128074b068566dc33e0ff9fdb7.exe
"C:\Users\Admin\AppData\Local\Temp\6b869d8825516d0b977d48043d1d56d233de7b128074b068566dc33e0ff9fdb7.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3472

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\6b869d8825516d0b977d48043d1d56d233de7b128074b068566dc33e0ff9fdb7.exe"
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:504

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\PssjBtDrVeeF.exe"
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:856

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\PssjBtDrVeeF" /XML "C:\Users\Admin\AppData\Local\Temp\tmp369C.tmp"
2⤵
- Creates scheduled task(s)
PID:684

C:\Users\Admin\AppData\Local\Temp\6b869d8825516d0b977d48043d1d56d233de7b128074b068566dc33e0ff9fdb7.exe
"C:\Users\Admin\AppData\Local\Temp\6b869d8825516d0b977d48043d1d56d233de7b128074b068566dc33e0ff9fdb7.exe"
2⤵
- Loads dropped DLL
- Checks processor information in registry
- Suspicious use of WriteProcessMemory
PID:2156

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c taskkill /pid 2156 & erase C:\Users\Admin\AppData\Local\Temp\6b869d8825516d0b977d48043d1d56d233de7b128074b0' & RD /S /Q C:\\ProgramData\\968642370685961\\* & exit
3⤵
- Suspicious use of WriteProcessMemory
PID:2356

C:\Windows\SysWOW64\taskkill.exe
taskkill /pid 2156
4⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:2076

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Credential Access

Credentials in Files

2

T1081

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Data from Local System

2

T1005

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
MD5
dea5fce862a0308864ee7f695908072d

SHA1
54fd30684f46edd55a68e537ae33cc7c7e913966

SHA256
ab30310578b73f4129e4f9a269cf0acbb3a7cf10f0df639a3cc785f1599f885e

SHA512
186937bf712ff6f5952083058a345e13d594996d645b9c7e315a40cd448e6323afc2ceea1ca190d24bcaf557826e8a198e3a9b1ea9fb00572b063f922f39aba8

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp369C.tmp
MD5
9cc6f61a4256a18057aea9782e2317af

SHA1
83d20a1be90bf0632f0d844d543d5523dc60cf0f

SHA256
fe72bac90c7c9e19fd47a0f3b1eee6c4d293d23fd99fcb50c959dce0d822570c

SHA512
047c6e8039d2dd1698a488843a97b573b1540c64aef07d2ba5f693e002b3175bfd3a32c4bc12e9301b04ea233cc765d42e6c20d4b219dc5ff08edc6965e5a2bf

Download Submit
\ProgramData\mozglue.dll
MD5
8f73c08a9660691143661bf7332c3c27

SHA1
37fa65dd737c50fda710fdbde89e51374d0c204a

SHA256
3fe6b1c54b8cf28f571e0c5d6636b4069a8ab00b4f11dd842cfec00691d0c9cd

SHA512
0042ecf9b3571bb5eba2de893e8b2371df18f7c5a589f52ee66e4bfbaa15a5b8b7cc6a155792aaa8988528c27196896d5e82e1751c998bacea0d92395f66ad89

Download Submit
\ProgramData\nss3.dll
MD5
bfac4e3c5908856ba17d41edcd455a51

SHA1
8eec7e888767aa9e4cca8ff246eb2aacb9170428

SHA256
e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78

SHA512
2565bab776c4d732ffb1f9b415992a4c65b81bcd644a9a1df1333a269e322925fc1df4f76913463296efd7c88ef194c3056de2f1ca1357d7b5fe5ff0da877a66

Download Submit
\ProgramData\sqlite3.dll
MD5
e477a96c8f2b18d6b5c27bde49c990bf

SHA1
e980c9bf41330d1e5bd04556db4646a0210f7409

SHA256
16574f51785b0e2fc29c2c61477eb47bb39f714829999511dc8952b43ab17660

SHA512
335a86268e7c0e568b1c30981ec644e6cd332e66f96d2551b58a82515316693c1859d87b4f4b7310cf1ac386cee671580fdd999c3bcb23acf2c2282c01c8798c

Download Submit
memory/504-162-0x0000000003350000-0x0000000003351000-memory.dmp

Filesize
4KB

Download
memory/504-200-0x000000007E430000-0x000000007E431000-memory.dmp

Filesize
4KB

Download
memory/504-256-0x00000000073A3000-0x00000000073A4000-memory.dmp

Filesize
4KB

Download
memory/504-127-0x0000000000000000-mapping.dmp

Download
memory/504-188-0x0000000009710000-0x0000000009711000-memory.dmp

Filesize
4KB

Download
memory/504-175-0x0000000009730000-0x0000000009763000-memory.dmp

Filesize
204KB

Download
memory/504-130-0x0000000003350000-0x0000000003351000-memory.dmp

Filesize
4KB

Download
memory/504-131-0x0000000003350000-0x0000000003351000-memory.dmp

Filesize
4KB

Download
memory/504-152-0x0000000008230000-0x0000000008231000-memory.dmp

Filesize
4KB

Download
memory/504-133-0x0000000004E70000-0x0000000004E71000-memory.dmp

Filesize
4KB

Download
memory/504-146-0x0000000007910000-0x0000000007911000-memory.dmp

Filesize
4KB

Download
memory/504-135-0x00000000079E0000-0x00000000079E1000-memory.dmp

Filesize
4KB

Download
memory/504-142-0x00000000073A2000-0x00000000073A3000-memory.dmp

Filesize
4KB

Download
memory/504-141-0x00000000073A0000-0x00000000073A1000-memory.dmp

Filesize
4KB

Download
memory/684-129-0x0000000000000000-mapping.dmp

Download
memory/856-158-0x0000000008170000-0x0000000008171000-memory.dmp

Filesize
4KB

Download
memory/856-144-0x0000000004802000-0x0000000004803000-memory.dmp

Filesize
4KB

Download
memory/856-160-0x0000000002D10000-0x0000000002D11000-memory.dmp

Filesize
4KB

Download
memory/856-253-0x0000000004803000-0x0000000004804000-memory.dmp

Filesize
4KB

Download
memory/856-201-0x000000007E8C0000-0x000000007E8C1000-memory.dmp

Filesize
4KB

Download
memory/856-134-0x0000000002D10000-0x0000000002D11000-memory.dmp

Filesize
4KB

Download
memory/856-148-0x0000000007A80000-0x0000000007A81000-memory.dmp

Filesize
4KB

Download
memory/856-150-0x0000000007AF0000-0x0000000007AF1000-memory.dmp

Filesize
4KB

Download
memory/856-132-0x0000000002D10000-0x0000000002D11000-memory.dmp

Filesize
4KB

Download
memory/856-154-0x0000000007400000-0x0000000007401000-memory.dmp

Filesize
4KB

Download
memory/856-156-0x0000000008480000-0x0000000008481000-memory.dmp

Filesize
4KB

Download
memory/856-128-0x0000000000000000-mapping.dmp

Download
memory/856-143-0x0000000004800000-0x0000000004801000-memory.dmp

Filesize
4KB

Download
memory/2076-346-0x0000000000000000-mapping.dmp

Download
memory/2156-139-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2156-140-0x000000000040717B-mapping.dmp

Download
memory/2156-145-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2356-341-0x0000000000000000-mapping.dmp

Download
memory/3472-123-0x0000000002D10000-0x0000000002D11000-memory.dmp

Filesize
4KB

Download
memory/3472-122-0x0000000002D00000-0x0000000002D01000-memory.dmp

Filesize
4KB

Download
memory/3472-126-0x000000000AFC0000-0x000000000B04A000-memory.dmp

Filesize
552KB

Download
memory/3472-124-0x0000000007770000-0x0000000007776000-memory.dmp

Filesize
24KB

Download
memory/3472-121-0x0000000002D60000-0x0000000002D61000-memory.dmp

Filesize
4KB

Download
memory/3472-125-0x000000000AD90000-0x000000000AD91000-memory.dmp

Filesize
4KB

Download
memory/3472-120-0x0000000007AF0000-0x0000000007AF1000-memory.dmp

Filesize
4KB

Download
memory/3472-118-0x0000000000710000-0x0000000000711000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads