oski | 34df6d609cc20cb1740280603d5ab2011bfd664ba45783bfe2a2254d965f16a9

Analysis

max time kernel
94s
max time network
145s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
08-01-2025 03:53

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General

Target

JaffaCakes118_89bc6b34e3333b5538b56661b4720a3b.exe
Size

416KB
MD5

89bc6b34e3333b5538b56661b4720a3b
SHA1

8d45cbfc8defcd6b2ae70a154bfa896aea580a01
SHA256

34df6d609cc20cb1740280603d5ab2011bfd664ba45783bfe2a2254d965f16a9
SHA512

af3e4a286828def89d9a1240b9b87fc56953fe81c653ed465742eaf5b9b69baf41299e9ed84fe2fdfb049989b8135e375ba029c9093dab88cd58b42b85d5b003
SSDEEP

6144:pb+QWIhV2WPguI87PQOB3xbkuZanpNh2w75aqfyjL6KSgDoaC/MtStAr5ijt+g2a:AQnrw7AqfcLTSgEEVijNsE

Score

10^/10

oski discovery infostealer spyware stealer

Malware Config

Extracted

Family

oski

maurizio.ug

Signatures

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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	JaffaCakes118_89bc6b34e3333b5538b56661b4720a3b.exe

Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1276 set thread context of 4704	1276	JaffaCakes118_89bc6b34e3333b5538b56661b4720a3b.exe	103

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

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4384	4704	WerFault.exe	103

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_89bc6b34e3333b5538b56661b4720a3b.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4924	powershell.exe
4924	powershell.exe
1276	JaffaCakes118_89bc6b34e3333b5538b56661b4720a3b.exe
1276	JaffaCakes118_89bc6b34e3333b5538b56661b4720a3b.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	4924	powershell.exe
Token: SeIncreaseQuotaPrivilege	4924	powershell.exe
Token: SeSecurityPrivilege	4924	powershell.exe
Token: SeTakeOwnershipPrivilege	4924	powershell.exe
Token: SeLoadDriverPrivilege	4924	powershell.exe
Token: SeSystemProfilePrivilege	4924	powershell.exe
Token: SeSystemtimePrivilege	4924	powershell.exe
Token: SeProfSingleProcessPrivilege	4924	powershell.exe
Token: SeIncBasePriorityPrivilege	4924	powershell.exe
Token: SeCreatePagefilePrivilege	4924	powershell.exe
Token: SeBackupPrivilege	4924	powershell.exe
Token: SeRestorePrivilege	4924	powershell.exe
Token: SeShutdownPrivilege	4924	powershell.exe
Token: SeDebugPrivilege	4924	powershell.exe
Token: SeSystemEnvironmentPrivilege	4924	powershell.exe
Token: SeRemoteShutdownPrivilege	4924	powershell.exe
Token: SeUndockPrivilege	4924	powershell.exe
Token: SeManageVolumePrivilege	4924	powershell.exe
Token: 33	4924	powershell.exe
Token: 34	4924	powershell.exe
Token: 35	4924	powershell.exe
Token: 36	4924	powershell.exe
Token: SeIncreaseQuotaPrivilege	4924	powershell.exe
Token: SeSecurityPrivilege	4924	powershell.exe
Token: SeTakeOwnershipPrivilege	4924	powershell.exe
Token: SeLoadDriverPrivilege	4924	powershell.exe
Token: SeSystemProfilePrivilege	4924	powershell.exe
Token: SeSystemtimePrivilege	4924	powershell.exe
Token: SeProfSingleProcessPrivilege	4924	powershell.exe
Token: SeIncBasePriorityPrivilege	4924	powershell.exe
Token: SeCreatePagefilePrivilege	4924	powershell.exe
Token: SeBackupPrivilege	4924	powershell.exe
Token: SeRestorePrivilege	4924	powershell.exe
Token: SeShutdownPrivilege	4924	powershell.exe
Token: SeDebugPrivilege	4924	powershell.exe
Token: SeSystemEnvironmentPrivilege	4924	powershell.exe
Token: SeRemoteShutdownPrivilege	4924	powershell.exe
Token: SeUndockPrivilege	4924	powershell.exe
Token: SeManageVolumePrivilege	4924	powershell.exe
Token: 33	4924	powershell.exe
Token: 34	4924	powershell.exe
Token: 35	4924	powershell.exe
Token: 36	4924	powershell.exe
Token: SeIncreaseQuotaPrivilege	4924	powershell.exe
Token: SeSecurityPrivilege	4924	powershell.exe
Token: SeTakeOwnershipPrivilege	4924	powershell.exe
Token: SeLoadDriverPrivilege	4924	powershell.exe
Token: SeSystemProfilePrivilege	4924	powershell.exe
Token: SeSystemtimePrivilege	4924	powershell.exe
Token: SeProfSingleProcessPrivilege	4924	powershell.exe
Token: SeIncBasePriorityPrivilege	4924	powershell.exe
Token: SeCreatePagefilePrivilege	4924	powershell.exe
Token: SeBackupPrivilege	4924	powershell.exe
Token: SeRestorePrivilege	4924	powershell.exe
Token: SeShutdownPrivilege	4924	powershell.exe
Token: SeDebugPrivilege	4924	powershell.exe
Token: SeSystemEnvironmentPrivilege	4924	powershell.exe
Token: SeRemoteShutdownPrivilege	4924	powershell.exe
Token: SeUndockPrivilege	4924	powershell.exe
Token: SeManageVolumePrivilege	4924	powershell.exe
Token: 33	4924	powershell.exe
Token: 34	4924	powershell.exe
Token: 35	4924	powershell.exe
Token: 36	4924	powershell.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1276 wrote to memory of 4924	1276	JaffaCakes118_89bc6b34e3333b5538b56661b4720a3b.exe	84
PID 1276 wrote to memory of 4924	1276	JaffaCakes118_89bc6b34e3333b5538b56661b4720a3b.exe	84
PID 1276 wrote to memory of 4924	1276	JaffaCakes118_89bc6b34e3333b5538b56661b4720a3b.exe	84
PID 1276 wrote to memory of 4704	1276	JaffaCakes118_89bc6b34e3333b5538b56661b4720a3b.exe	103
PID 1276 wrote to memory of 4704	1276	JaffaCakes118_89bc6b34e3333b5538b56661b4720a3b.exe	103
PID 1276 wrote to memory of 4704	1276	JaffaCakes118_89bc6b34e3333b5538b56661b4720a3b.exe	103
PID 1276 wrote to memory of 4704	1276	JaffaCakes118_89bc6b34e3333b5538b56661b4720a3b.exe	103
PID 1276 wrote to memory of 4704	1276	JaffaCakes118_89bc6b34e3333b5538b56661b4720a3b.exe	103
PID 1276 wrote to memory of 4704	1276	JaffaCakes118_89bc6b34e3333b5538b56661b4720a3b.exe	103
PID 1276 wrote to memory of 4704	1276	JaffaCakes118_89bc6b34e3333b5538b56661b4720a3b.exe	103
PID 1276 wrote to memory of 4704	1276	JaffaCakes118_89bc6b34e3333b5538b56661b4720a3b.exe	103
PID 1276 wrote to memory of 4704	1276	JaffaCakes118_89bc6b34e3333b5538b56661b4720a3b.exe	103

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_89bc6b34e3333b5538b56661b4720a3b.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_89bc6b34e3333b5538b56661b4720a3b.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1276
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Test-NetConnection
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4924
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_89bc6b34e3333b5538b56661b4720a3b.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_89bc6b34e3333b5538b56661b4720a3b.exe
  2⤵
  PID:4704
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4704 -s 1312
    3⤵
    - Program crash
    PID:4384

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 4704 -ip 4704
1⤵
PID:1112

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_vxeaddiw.ud1.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1276-57-0x0000000005770000-0x0000000005798000-memory.dmp

Filesize
160KB

Download
memory/1276-64-0x0000000074F00000-0x00000000756B0000-memory.dmp

Filesize
7.7MB

Download
memory/1276-58-0x0000000074F00000-0x00000000756B0000-memory.dmp

Filesize
7.7MB

Download
memory/1276-0-0x0000000074F0E000-0x0000000074F0F000-memory.dmp

Filesize
4KB

Download
memory/1276-1-0x0000000000C60000-0x0000000000CCC000-memory.dmp

Filesize
432KB

Download
memory/1276-56-0x0000000005720000-0x0000000005766000-memory.dmp

Filesize
280KB

Download
memory/1276-47-0x0000000074F0E000-0x0000000074F0F000-memory.dmp

Filesize
4KB

Download
memory/4704-67-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/4704-63-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/4704-61-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/4704-60-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/4704-59-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/4924-39-0x00000000067D0000-0x00000000067EA000-memory.dmp

Filesize
104KB

Download
memory/4924-20-0x0000000006100000-0x000000000611E000-memory.dmp

Filesize
120KB

Download
memory/4924-24-0x00000000704B0000-0x00000000704FC000-memory.dmp

Filesize
304KB

Download
memory/4924-22-0x00000000066E0000-0x0000000006712000-memory.dmp

Filesize
200KB

Download
memory/4924-34-0x00000000066C0000-0x00000000066DE000-memory.dmp

Filesize
120KB

Download
memory/4924-35-0x00000000071A0000-0x0000000007243000-memory.dmp

Filesize
652KB

Download
memory/4924-36-0x0000000074F00000-0x00000000756B0000-memory.dmp

Filesize
7.7MB

Download
memory/4924-37-0x0000000074F00000-0x00000000756B0000-memory.dmp

Filesize
7.7MB

Download
memory/4924-38-0x0000000007AD0000-0x000000000814A000-memory.dmp

Filesize
6.5MB

Download
memory/4924-21-0x0000000006150000-0x000000000619C000-memory.dmp

Filesize
304KB

Download
memory/4924-40-0x00000000074A0000-0x00000000074AA000-memory.dmp

Filesize
40KB

Download
memory/4924-41-0x00000000076B0000-0x0000000007746000-memory.dmp

Filesize
600KB

Download
memory/4924-42-0x0000000007630000-0x0000000007641000-memory.dmp

Filesize
68KB

Download
memory/4924-43-0x00000000078D0000-0x00000000078E0000-memory.dmp

Filesize
64KB

Download
memory/4924-44-0x0000000007900000-0x000000000791A000-memory.dmp

Filesize
104KB

Download
memory/4924-45-0x0000000007960000-0x000000000798A000-memory.dmp

Filesize
168KB

Download
memory/4924-46-0x0000000007990000-0x00000000079B4000-memory.dmp

Filesize
144KB

Download
memory/4924-23-0x0000000074F00000-0x00000000756B0000-memory.dmp

Filesize
7.7MB

Download
memory/4924-48-0x0000000074F00000-0x00000000756B0000-memory.dmp

Filesize
7.7MB

Download
memory/4924-49-0x0000000074F00000-0x00000000756B0000-memory.dmp

Filesize
7.7MB

Download
memory/4924-50-0x0000000007940000-0x000000000794E000-memory.dmp

Filesize
56KB

Download
memory/4924-51-0x0000000074F00000-0x00000000756B0000-memory.dmp

Filesize
7.7MB

Download
memory/4924-52-0x0000000074F00000-0x00000000756B0000-memory.dmp

Filesize
7.7MB

Download
memory/4924-55-0x0000000074F00000-0x00000000756B0000-memory.dmp

Filesize
7.7MB

Download
memory/4924-19-0x0000000005BD0000-0x0000000005F24000-memory.dmp

Filesize
3.3MB

Download
memory/4924-9-0x0000000005260000-0x00000000052C6000-memory.dmp

Filesize
408KB

Download
memory/4924-8-0x00000000051F0000-0x0000000005256000-memory.dmp

Filesize
408KB

Download
memory/4924-7-0x0000000005150000-0x0000000005172000-memory.dmp

Filesize
136KB

Download
memory/4924-6-0x0000000074F00000-0x00000000756B0000-memory.dmp

Filesize
7.7MB

Download
memory/4924-5-0x0000000074F00000-0x00000000756B0000-memory.dmp

Filesize
7.7MB

Download
memory/4924-3-0x00000000054A0000-0x0000000005AC8000-memory.dmp

Filesize
6.2MB

Download
memory/4924-4-0x0000000074F00000-0x00000000756B0000-memory.dmp

Filesize
7.7MB

Download
memory/4924-2-0x0000000002830000-0x0000000002866000-memory.dmp

Filesize
216KB

Download