oski | 28d5e4dcaadfbd31a3c06048031bf9070d8a6f81abeef808cdf4a6d5c19d783c

General

Target

28D5E4DCAADFBD31A3C06048031BF9070D8A6F81ABEEF.exe
Size

322KB
MD5

f61ed5198e5dd131980bbd500c0aa319
SHA1

b777cb080166f9268067981e963455e084c5dfe2
SHA256

28d5e4dcaadfbd31a3c06048031bf9070d8a6f81abeef808cdf4a6d5c19d783c
SHA512

67ca7388607ffeaa980222f9cab550c2f8bd7c2099eeb41059ae1415dc3aa8e36c4feaf892e617819249bd34f9c3ede4eb554e9ae3bae83ea8ef67fe5fe31ae9

Score

10^/10

oski infostealer persistence spyware stealer suricata

Malware Config

Extracted

Family

oski

C2

gemsbundle.com

Signatures

Oski
Oski is an infostealer targeting browser data, crypto wallets.
infostealer oski
suricata: ET MALWARE Vidar/Arkei/Megumin/Oski Stealer HTTP POST Pattern
suricata: ET MALWARE Vidar/Arkei/Megumin/Oski Stealer HTTP POST Pattern
suricata
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 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

28D5E4DCAADFBD31A3C06048031BF9070D8A6F81ABEEF.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce\MbSAXaLzRE = "C:\\Users\\Admin\\AppData\\Roaming\\TpPsESMjAC\\YbZNCwDeSR.exe"	28D5E4DCAADFBD31A3C06048031BF9070D8A6F81ABEEF.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

28D5E4DCAADFBD31A3C06048031BF9070D8A6F81ABEEF.exe

description	pid	process	target process
PID 316 set thread context of 1480	316	28D5E4DCAADFBD31A3C06048031BF9070D8A6F81ABEEF.exe	28D5E4DCAADFBD31A3C06048031BF9070D8A6F81ABEEF.exe

Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

1548 1480 WerFault.exe 28D5E4DCAADFBD31A3C06048031BF9070D8A6F81ABEEF.exe

pid	pid_target	process	target process
1548	1480	WerFault.exe	28D5E4DCAADFBD31A3C06048031BF9070D8A6F81ABEEF.exe

Suspicious use of WriteProcessMemory 14 IoCs

Processes:

28D5E4DCAADFBD31A3C06048031BF9070D8A6F81ABEEF.exe28D5E4DCAADFBD31A3C06048031BF9070D8A6F81ABEEF.exe

description	pid	process	target process
PID 316 wrote to memory of 1480	316	28D5E4DCAADFBD31A3C06048031BF9070D8A6F81ABEEF.exe	28D5E4DCAADFBD31A3C06048031BF9070D8A6F81ABEEF.exe
PID 316 wrote to memory of 1480	316	28D5E4DCAADFBD31A3C06048031BF9070D8A6F81ABEEF.exe	28D5E4DCAADFBD31A3C06048031BF9070D8A6F81ABEEF.exe
PID 316 wrote to memory of 1480	316	28D5E4DCAADFBD31A3C06048031BF9070D8A6F81ABEEF.exe	28D5E4DCAADFBD31A3C06048031BF9070D8A6F81ABEEF.exe
PID 316 wrote to memory of 1480	316	28D5E4DCAADFBD31A3C06048031BF9070D8A6F81ABEEF.exe	28D5E4DCAADFBD31A3C06048031BF9070D8A6F81ABEEF.exe
PID 316 wrote to memory of 1480	316	28D5E4DCAADFBD31A3C06048031BF9070D8A6F81ABEEF.exe	28D5E4DCAADFBD31A3C06048031BF9070D8A6F81ABEEF.exe
PID 316 wrote to memory of 1480	316	28D5E4DCAADFBD31A3C06048031BF9070D8A6F81ABEEF.exe	28D5E4DCAADFBD31A3C06048031BF9070D8A6F81ABEEF.exe
PID 316 wrote to memory of 1480	316	28D5E4DCAADFBD31A3C06048031BF9070D8A6F81ABEEF.exe	28D5E4DCAADFBD31A3C06048031BF9070D8A6F81ABEEF.exe
PID 316 wrote to memory of 1480	316	28D5E4DCAADFBD31A3C06048031BF9070D8A6F81ABEEF.exe	28D5E4DCAADFBD31A3C06048031BF9070D8A6F81ABEEF.exe
PID 316 wrote to memory of 1480	316	28D5E4DCAADFBD31A3C06048031BF9070D8A6F81ABEEF.exe	28D5E4DCAADFBD31A3C06048031BF9070D8A6F81ABEEF.exe
PID 316 wrote to memory of 1480	316	28D5E4DCAADFBD31A3C06048031BF9070D8A6F81ABEEF.exe	28D5E4DCAADFBD31A3C06048031BF9070D8A6F81ABEEF.exe
PID 1480 wrote to memory of 1548	1480	28D5E4DCAADFBD31A3C06048031BF9070D8A6F81ABEEF.exe	WerFault.exe
PID 1480 wrote to memory of 1548	1480	28D5E4DCAADFBD31A3C06048031BF9070D8A6F81ABEEF.exe	WerFault.exe
PID 1480 wrote to memory of 1548	1480	28D5E4DCAADFBD31A3C06048031BF9070D8A6F81ABEEF.exe	WerFault.exe
PID 1480 wrote to memory of 1548	1480	28D5E4DCAADFBD31A3C06048031BF9070D8A6F81ABEEF.exe	WerFault.exe

C:\Users\Admin\AppData\Local\Temp\28D5E4DCAADFBD31A3C06048031BF9070D8A6F81ABEEF.exe
"C:\Users\Admin\AppData\Local\Temp\28D5E4DCAADFBD31A3C06048031BF9070D8A6F81ABEEF.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:316

C:\Users\Admin\AppData\Local\Temp\28D5E4DCAADFBD31A3C06048031BF9070D8A6F81ABEEF.exe
"C:\Users\Admin\AppData\Local\Temp\28D5E4DCAADFBD31A3C06048031BF9070D8A6F81ABEEF.exe"
2⤵
- Suspicious use of WriteProcessMemory
PID:1480

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1480 -s 772
3⤵
- Program crash
PID:1548

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

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Downloads

memory/316-54-0x0000000000370000-0x00000000003C6000-memory.dmp

Filesize
344KB

Download
memory/316-55-0x0000000076431000-0x0000000076433000-memory.dmp

Filesize
8KB

Download
memory/316-56-0x0000000001DF0000-0x0000000001DFA000-memory.dmp

Filesize
40KB

Download
memory/1480-62-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1480-57-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1480-60-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1480-58-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1480-64-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1480-67-0x000000000040717B-mapping.dmp

Download
memory/1480-66-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1480-69-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1480-71-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1480-73-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1548-72-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads