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

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

379ab7eebd100778e2605df3c32da046.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1101907861-274115917-2188613224-1000\Control Panel\International\Geo\Nation	379ab7eebd100778e2605df3c32da046.exe

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-1-5-21-1101907861-274115917-2188613224-1000\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 1264 set thread context of 4856 1264 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

4772 4856 WerFault.exe InstallUtil.exe

description	pid	process	target process
PID 1264 set thread context of 4856	1264	379ab7eebd100778e2605df3c32da046.exe	InstallUtil.exe

pid	pid_target	process	target process
4772	4856	WerFault.exe	InstallUtil.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

Processes:

powershell.exe379ab7eebd100778e2605df3c32da046.exe

pid	process
4328	powershell.exe
4328	powershell.exe
1264	379ab7eebd100778e2605df3c32da046.exe
1264	379ab7eebd100778e2605df3c32da046.exe
1264	379ab7eebd100778e2605df3c32da046.exe
1264	379ab7eebd100778e2605df3c32da046.exe
1264	379ab7eebd100778e2605df3c32da046.exe
1264	379ab7eebd100778e2605df3c32da046.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

powershell.exe379ab7eebd100778e2605df3c32da046.exe

description pid process

Token: SeDebugPrivilege 4328 powershell.exe
Token: SeDebugPrivilege 1264 379ab7eebd100778e2605df3c32da046.exe

description	pid	process
Token: SeDebugPrivilege	4328	powershell.exe
Token: SeDebugPrivilege	1264	379ab7eebd100778e2605df3c32da046.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

379ab7eebd100778e2605df3c32da046.exe

description	pid	process	target process
PID 1264 wrote to memory of 4328	1264	379ab7eebd100778e2605df3c32da046.exe	powershell.exe
PID 1264 wrote to memory of 4328	1264	379ab7eebd100778e2605df3c32da046.exe	powershell.exe
PID 1264 wrote to memory of 4328	1264	379ab7eebd100778e2605df3c32da046.exe	powershell.exe
PID 1264 wrote to memory of 4920	1264	379ab7eebd100778e2605df3c32da046.exe	InstallUtil.exe
PID 1264 wrote to memory of 4920	1264	379ab7eebd100778e2605df3c32da046.exe	InstallUtil.exe
PID 1264 wrote to memory of 4920	1264	379ab7eebd100778e2605df3c32da046.exe	InstallUtil.exe
PID 1264 wrote to memory of 4856	1264	379ab7eebd100778e2605df3c32da046.exe	InstallUtil.exe
PID 1264 wrote to memory of 4856	1264	379ab7eebd100778e2605df3c32da046.exe	InstallUtil.exe
PID 1264 wrote to memory of 4856	1264	379ab7eebd100778e2605df3c32da046.exe	InstallUtil.exe
PID 1264 wrote to memory of 4856	1264	379ab7eebd100778e2605df3c32da046.exe	InstallUtil.exe
PID 1264 wrote to memory of 4856	1264	379ab7eebd100778e2605df3c32da046.exe	InstallUtil.exe
PID 1264 wrote to memory of 4856	1264	379ab7eebd100778e2605df3c32da046.exe	InstallUtil.exe
PID 1264 wrote to memory of 4856	1264	379ab7eebd100778e2605df3c32da046.exe	InstallUtil.exe
PID 1264 wrote to memory of 4856	1264	379ab7eebd100778e2605df3c32da046.exe	InstallUtil.exe
PID 1264 wrote to memory of 4856	1264	379ab7eebd100778e2605df3c32da046.exe	InstallUtil.exe

C:\Users\Admin\AppData\Local\Temp\379ab7eebd100778e2605df3c32da046.exe
"C:\Users\Admin\AppData\Local\Temp\379ab7eebd100778e2605df3c32da046.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1264

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:4328

C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
2⤵
PID:4920

C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
2⤵
PID:4856

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 4856 -s 1288
3⤵
- Program crash
PID:4772

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 4856 -ip 4856
1⤵
PID:4816

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

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

memory/1264-130-0x0000000000460000-0x00000000004FA000-memory.dmp

Filesize
616KB

Download
memory/1264-131-0x0000000004EF0000-0x0000000004F12000-memory.dmp

Filesize
136KB

Download
memory/4328-138-0x0000000007560000-0x0000000007BDA000-memory.dmp

Filesize
6.5MB

Download
memory/4328-139-0x00000000063F0000-0x000000000640A000-memory.dmp

Filesize
104KB

Download
memory/4328-134-0x00000000053B0000-0x00000000059D8000-memory.dmp

Filesize
6.2MB

Download
memory/4328-135-0x00000000050D0000-0x0000000005136000-memory.dmp

Filesize
408KB

Download
memory/4328-136-0x00000000051F0000-0x0000000005256000-memory.dmp

Filesize
408KB

Download
memory/4328-137-0x0000000005EF0000-0x0000000005F0E000-memory.dmp

Filesize
120KB

Download
memory/4328-132-0x0000000000000000-mapping.dmp

Download
memory/4328-133-0x0000000002900000-0x0000000002936000-memory.dmp

Filesize
216KB

Download
memory/4856-141-0x0000000000000000-mapping.dmp

Download
memory/4856-142-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4856-143-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4856-144-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4856-145-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4856-146-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4920-140-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads