oski | 0d680dba51deffe04686d1df8c87de9c6c0310f7060bf4cfb0079a2f25caef10

General

Target

379ab7eebd100778e2605df3c32da046.exe
Size

595KB
MD5

379ab7eebd100778e2605df3c32da046
SHA1

cba7f97fb75338262c97549608a653c155150813
SHA256

0d680dba51deffe04686d1df8c87de9c6c0310f7060bf4cfb0079a2f25caef10
SHA512

f95a923b84b7594a464bcf981e01af94d4e4d1d3bc98e52c022aac12c9393106fe1fda97a66b15cfdae867e2272585a1a99e6e7237f823fde6c0183c6676a7a3

Score

10^/10

oski infostealer persistence

Malware Config

Extracted

Family

oski

C2

quisha.axwebsite.com

Signatures

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

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

379ab7eebd100778e2605df3c32da046.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-4084403625-2215941253-1760665084-1000\Software\Microsoft\Windows\CurrentVersion\Run\Hacsuj = "\"C:\\Users\\Admin\\AppData\\Roaming\\Xjirlvjna\\Hacsuj.exe\""	379ab7eebd100778e2605df3c32da046.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

379ab7eebd100778e2605df3c32da046.exe

description pid process target process

PID 1668 set thread context of 2028 1668 379ab7eebd100778e2605df3c32da046.exe InstallUtil.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

1076 2028 WerFault.exe InstallUtil.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

powershell.exe379ab7eebd100778e2605df3c32da046.exe

pid process

2020 powershell.exe
1668 379ab7eebd100778e2605df3c32da046.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

powershell.exe379ab7eebd100778e2605df3c32da046.exe

description pid process

Token: SeDebugPrivilege 2020 powershell.exe
Token: SeDebugPrivilege 1668 379ab7eebd100778e2605df3c32da046.exe

description	pid	process	target process
PID 1668 set thread context of 2028	1668	379ab7eebd100778e2605df3c32da046.exe	InstallUtil.exe

pid	pid_target	process	target process
1076	2028	WerFault.exe	InstallUtil.exe

pid	process
2020	powershell.exe
1668	379ab7eebd100778e2605df3c32da046.exe

description	pid	process
Token: SeDebugPrivilege	2020	powershell.exe
Token: SeDebugPrivilege	1668	379ab7eebd100778e2605df3c32da046.exe

Suspicious use of WriteProcessMemory 21 IoCs

Processes:

379ab7eebd100778e2605df3c32da046.exeInstallUtil.exe

description	pid	process	target process
PID 1668 wrote to memory of 2020	1668	379ab7eebd100778e2605df3c32da046.exe	powershell.exe
PID 1668 wrote to memory of 2020	1668	379ab7eebd100778e2605df3c32da046.exe	powershell.exe
PID 1668 wrote to memory of 2020	1668	379ab7eebd100778e2605df3c32da046.exe	powershell.exe
PID 1668 wrote to memory of 2020	1668	379ab7eebd100778e2605df3c32da046.exe	powershell.exe
PID 1668 wrote to memory of 2028	1668	379ab7eebd100778e2605df3c32da046.exe	InstallUtil.exe
PID 1668 wrote to memory of 2028	1668	379ab7eebd100778e2605df3c32da046.exe	InstallUtil.exe
PID 1668 wrote to memory of 2028	1668	379ab7eebd100778e2605df3c32da046.exe	InstallUtil.exe
PID 1668 wrote to memory of 2028	1668	379ab7eebd100778e2605df3c32da046.exe	InstallUtil.exe
PID 1668 wrote to memory of 2028	1668	379ab7eebd100778e2605df3c32da046.exe	InstallUtil.exe
PID 1668 wrote to memory of 2028	1668	379ab7eebd100778e2605df3c32da046.exe	InstallUtil.exe
PID 1668 wrote to memory of 2028	1668	379ab7eebd100778e2605df3c32da046.exe	InstallUtil.exe
PID 1668 wrote to memory of 2028	1668	379ab7eebd100778e2605df3c32da046.exe	InstallUtil.exe
PID 1668 wrote to memory of 2028	1668	379ab7eebd100778e2605df3c32da046.exe	InstallUtil.exe
PID 1668 wrote to memory of 2028	1668	379ab7eebd100778e2605df3c32da046.exe	InstallUtil.exe
PID 1668 wrote to memory of 2028	1668	379ab7eebd100778e2605df3c32da046.exe	InstallUtil.exe
PID 1668 wrote to memory of 2028	1668	379ab7eebd100778e2605df3c32da046.exe	InstallUtil.exe
PID 1668 wrote to memory of 2028	1668	379ab7eebd100778e2605df3c32da046.exe	InstallUtil.exe
PID 2028 wrote to memory of 1076	2028	InstallUtil.exe	WerFault.exe
PID 2028 wrote to memory of 1076	2028	InstallUtil.exe	WerFault.exe
PID 2028 wrote to memory of 1076	2028	InstallUtil.exe	WerFault.exe
PID 2028 wrote to memory of 1076	2028	InstallUtil.exe	WerFault.exe

C:\Users\Admin\AppData\Local\Temp\379ab7eebd100778e2605df3c32da046.exe
"C:\Users\Admin\AppData\Local\Temp\379ab7eebd100778e2605df3c32da046.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1668

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc UwB0AGEAcgB0AC0AUwBsAGUAZQBwACAALQBTAGUAYwBvAG4AZABzACAAMQAwAA==
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2020

C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
2⤵
- Suspicious use of WriteProcessMemory
PID:2028

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2028 -s 732
3⤵
- Program crash
PID:1076

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

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/1076-77-0x0000000000000000-mapping.dmp

Download
memory/1668-54-0x0000000000ED0000-0x0000000000F6A000-memory.dmp

Filesize
616KB

Download
memory/1668-55-0x0000000000C20000-0x0000000000C8E000-memory.dmp

Filesize
440KB

Download
memory/1668-56-0x0000000000E40000-0x0000000000ED2000-memory.dmp

Filesize
584KB

Download
memory/1668-57-0x0000000075B61000-0x0000000075B63000-memory.dmp

Filesize
8KB

Download
memory/2020-58-0x0000000000000000-mapping.dmp

Download
memory/2020-60-0x000000006F380000-0x000000006F92B000-memory.dmp

Filesize
5.7MB

Download
memory/2020-61-0x000000006F380000-0x000000006F92B000-memory.dmp

Filesize
5.7MB

Download
memory/2028-63-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2028-65-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2028-67-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2028-69-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2028-71-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2028-72-0x000000000040717B-mapping.dmp

Download
memory/2028-74-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2028-76-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2028-62-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2028-78-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download

Analysis

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