oski | 10ff4344f698547a27e67167438038e64b2b7ec9d0329b2848eac9d1eb1b420a

General

Target

28d5e4dcaadfbd31a3c06048031bf9070d8a6f81abeef808cdf4a6d5c19d783c.exe
Size

322KB
MD5

f61ed5198e5dd131980bbd500c0aa319
SHA1

b777cb080166f9268067981e963455e084c5dfe2
SHA256

28d5e4dcaadfbd31a3c06048031bf9070d8a6f81abeef808cdf4a6d5c19d783c
SHA512

67ca7388607ffeaa980222f9cab550c2f8bd7c2099eeb41059ae1415dc3aa8e36c4feaf892e617819249bd34f9c3ede4eb554e9ae3bae83ea8ef67fe5fe31ae9

Score

10^/10

oski infostealer persistence spyware stealer

Malware Config

Extracted

Family

oski

C2

gemsbundle.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
T1081

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

28d5e4dcaadfbd31a3c06048031bf9070d8a6f81abeef808cdf4a6d5c19d783c.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-1042495040-510797905-2613508344-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce	28d5e4dcaadfbd31a3c06048031bf9070d8a6f81abeef808cdf4a6d5c19d783c.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1042495040-510797905-2613508344-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce\MbSAXaLzRE = "C:\\Users\\Admin\\AppData\\Roaming\\TpPsESMjAC\\YbZNCwDeSR.exe"	28d5e4dcaadfbd31a3c06048031bf9070d8a6f81abeef808cdf4a6d5c19d783c.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

28d5e4dcaadfbd31a3c06048031bf9070d8a6f81abeef808cdf4a6d5c19d783c.exe

description	pid	process	target process
PID 3660 set thread context of 3996	3660	28d5e4dcaadfbd31a3c06048031bf9070d8a6f81abeef808cdf4a6d5c19d783c.exe	28d5e4dcaadfbd31a3c06048031bf9070d8a6f81abeef808cdf4a6d5c19d783c.exe

Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

4424 3996 WerFault.exe 28d5e4dcaadfbd31a3c06048031bf9070d8a6f81abeef808cdf4a6d5c19d783c.exe

pid	pid_target	process	target process
4424	3996	WerFault.exe	28d5e4dcaadfbd31a3c06048031bf9070d8a6f81abeef808cdf4a6d5c19d783c.exe

Suspicious behavior: EnumeratesProcesses 12 IoCs

Processes:

WerFault.exe

pid	process
4424	WerFault.exe
4424	WerFault.exe
4424	WerFault.exe
4424	WerFault.exe
4424	WerFault.exe
4424	WerFault.exe
4424	WerFault.exe
4424	WerFault.exe
4424	WerFault.exe
4424	WerFault.exe
4424	WerFault.exe
4424	WerFault.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

WerFault.exe

description pid process

Token: SeRestorePrivilege 4424 WerFault.exe
Token: SeBackupPrivilege 4424 WerFault.exe
Token: SeDebugPrivilege 4424 WerFault.exe

description	pid	process
Token: SeRestorePrivilege	4424	WerFault.exe
Token: SeBackupPrivilege	4424	WerFault.exe
Token: SeDebugPrivilege	4424	WerFault.exe

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

28d5e4dcaadfbd31a3c06048031bf9070d8a6f81abeef808cdf4a6d5c19d783c.exe

description	pid	process	target process
PID 3660 wrote to memory of 3996	3660	28d5e4dcaadfbd31a3c06048031bf9070d8a6f81abeef808cdf4a6d5c19d783c.exe	28d5e4dcaadfbd31a3c06048031bf9070d8a6f81abeef808cdf4a6d5c19d783c.exe
PID 3660 wrote to memory of 3996	3660	28d5e4dcaadfbd31a3c06048031bf9070d8a6f81abeef808cdf4a6d5c19d783c.exe	28d5e4dcaadfbd31a3c06048031bf9070d8a6f81abeef808cdf4a6d5c19d783c.exe
PID 3660 wrote to memory of 3996	3660	28d5e4dcaadfbd31a3c06048031bf9070d8a6f81abeef808cdf4a6d5c19d783c.exe	28d5e4dcaadfbd31a3c06048031bf9070d8a6f81abeef808cdf4a6d5c19d783c.exe
PID 3660 wrote to memory of 3996	3660	28d5e4dcaadfbd31a3c06048031bf9070d8a6f81abeef808cdf4a6d5c19d783c.exe	28d5e4dcaadfbd31a3c06048031bf9070d8a6f81abeef808cdf4a6d5c19d783c.exe
PID 3660 wrote to memory of 3996	3660	28d5e4dcaadfbd31a3c06048031bf9070d8a6f81abeef808cdf4a6d5c19d783c.exe	28d5e4dcaadfbd31a3c06048031bf9070d8a6f81abeef808cdf4a6d5c19d783c.exe
PID 3660 wrote to memory of 3996	3660	28d5e4dcaadfbd31a3c06048031bf9070d8a6f81abeef808cdf4a6d5c19d783c.exe	28d5e4dcaadfbd31a3c06048031bf9070d8a6f81abeef808cdf4a6d5c19d783c.exe
PID 3660 wrote to memory of 3996	3660	28d5e4dcaadfbd31a3c06048031bf9070d8a6f81abeef808cdf4a6d5c19d783c.exe	28d5e4dcaadfbd31a3c06048031bf9070d8a6f81abeef808cdf4a6d5c19d783c.exe
PID 3660 wrote to memory of 3996	3660	28d5e4dcaadfbd31a3c06048031bf9070d8a6f81abeef808cdf4a6d5c19d783c.exe	28d5e4dcaadfbd31a3c06048031bf9070d8a6f81abeef808cdf4a6d5c19d783c.exe
PID 3660 wrote to memory of 3996	3660	28d5e4dcaadfbd31a3c06048031bf9070d8a6f81abeef808cdf4a6d5c19d783c.exe	28d5e4dcaadfbd31a3c06048031bf9070d8a6f81abeef808cdf4a6d5c19d783c.exe

C:\Users\Admin\AppData\Local\Temp\28d5e4dcaadfbd31a3c06048031bf9070d8a6f81abeef808cdf4a6d5c19d783c.exe
"C:\Users\Admin\AppData\Local\Temp\28d5e4dcaadfbd31a3c06048031bf9070d8a6f81abeef808cdf4a6d5c19d783c.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3660

C:\Users\Admin\AppData\Local\Temp\28d5e4dcaadfbd31a3c06048031bf9070d8a6f81abeef808cdf4a6d5c19d783c.exe
"C:\Users\Admin\AppData\Local\Temp\28d5e4dcaadfbd31a3c06048031bf9070d8a6f81abeef808cdf4a6d5c19d783c.exe"
2⤵
PID:3996

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 3996 -s 1216
3⤵
- Program crash
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4424

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Credentials in Files

1

T1081

Discovery

Lateral Movement

Collection

Data from Local System

1

T1005

Exfiltration

Command and Control

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/3660-118-0x00000000008D0000-0x00000000008D1000-memory.dmp

Filesize
4KB

Download
memory/3660-120-0x0000000005690000-0x0000000005691000-memory.dmp

Filesize
4KB

Download
memory/3660-121-0x0000000005230000-0x0000000005231000-memory.dmp

Filesize
4KB

Download
memory/3660-122-0x00000000052D0000-0x00000000052D1000-memory.dmp

Filesize
4KB

Download
memory/3660-123-0x00000000050C0000-0x00000000050C1000-memory.dmp

Filesize
4KB

Download
memory/3660-124-0x0000000005140000-0x0000000005143000-memory.dmp

Filesize
12KB

Download
memory/3996-125-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3996-126-0x000000000040717B-mapping.dmp

Download
memory/3996-127-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

Loading Replay Monitor...

Downloads