oski | 34df6d609cc20cb1740280603d5ab2011bfd664ba45783bfe2a2254d965f16a9

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

C2

maurizio.ug

Signatures

Oski
Oski is an infostealer targeting browser data, crypto wallets.
infostealer oski
Oski family
oski
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 1800 set thread context of 2812	1800	JaffaCakes118_89bc6b34e3333b5538b56661b4720a3b.exe	33

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
1464	2812	WerFault.exe	33

System Location Discovery: System Language Discovery 1 TTPs 3 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	JaffaCakes118_89bc6b34e3333b5538b56661b4720a3b.exe
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 3 IoCs

pid	Process
2588	powershell.exe
1800	JaffaCakes118_89bc6b34e3333b5538b56661b4720a3b.exe
1800	JaffaCakes118_89bc6b34e3333b5538b56661b4720a3b.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2588	powershell.exe
Token: SeDebugPrivilege	1800	JaffaCakes118_89bc6b34e3333b5538b56661b4720a3b.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 1800 wrote to memory of 2588	1800	JaffaCakes118_89bc6b34e3333b5538b56661b4720a3b.exe	31
PID 1800 wrote to memory of 2588	1800	JaffaCakes118_89bc6b34e3333b5538b56661b4720a3b.exe	31
PID 1800 wrote to memory of 2588	1800	JaffaCakes118_89bc6b34e3333b5538b56661b4720a3b.exe	31
PID 1800 wrote to memory of 2588	1800	JaffaCakes118_89bc6b34e3333b5538b56661b4720a3b.exe	31
PID 1800 wrote to memory of 2812	1800	JaffaCakes118_89bc6b34e3333b5538b56661b4720a3b.exe	33
PID 1800 wrote to memory of 2812	1800	JaffaCakes118_89bc6b34e3333b5538b56661b4720a3b.exe	33
PID 1800 wrote to memory of 2812	1800	JaffaCakes118_89bc6b34e3333b5538b56661b4720a3b.exe	33
PID 1800 wrote to memory of 2812	1800	JaffaCakes118_89bc6b34e3333b5538b56661b4720a3b.exe	33
PID 1800 wrote to memory of 2812	1800	JaffaCakes118_89bc6b34e3333b5538b56661b4720a3b.exe	33
PID 1800 wrote to memory of 2812	1800	JaffaCakes118_89bc6b34e3333b5538b56661b4720a3b.exe	33
PID 1800 wrote to memory of 2812	1800	JaffaCakes118_89bc6b34e3333b5538b56661b4720a3b.exe	33
PID 1800 wrote to memory of 2812	1800	JaffaCakes118_89bc6b34e3333b5538b56661b4720a3b.exe	33
PID 1800 wrote to memory of 2812	1800	JaffaCakes118_89bc6b34e3333b5538b56661b4720a3b.exe	33
PID 1800 wrote to memory of 2812	1800	JaffaCakes118_89bc6b34e3333b5538b56661b4720a3b.exe	33
PID 2812 wrote to memory of 1464	2812	JaffaCakes118_89bc6b34e3333b5538b56661b4720a3b.exe	37
PID 2812 wrote to memory of 1464	2812	JaffaCakes118_89bc6b34e3333b5538b56661b4720a3b.exe	37
PID 2812 wrote to memory of 1464	2812	JaffaCakes118_89bc6b34e3333b5538b56661b4720a3b.exe	37
PID 2812 wrote to memory of 1464	2812	JaffaCakes118_89bc6b34e3333b5538b56661b4720a3b.exe	37

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_89bc6b34e3333b5538b56661b4720a3b.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_89bc6b34e3333b5538b56661b4720a3b.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1800
- 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:2588
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_89bc6b34e3333b5538b56661b4720a3b.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_89bc6b34e3333b5538b56661b4720a3b.exe
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2812
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2812 -s 764
    3⤵
    - Program crash
    PID:1464

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1800-8-0x0000000000730000-0x0000000000758000-memory.dmp

Filesize
160KB

Download
memory/1800-0-0x00000000746FE000-0x00000000746FF000-memory.dmp

Filesize
4KB

Download
memory/1800-5-0x00000000746FE000-0x00000000746FF000-memory.dmp

Filesize
4KB

Download
memory/1800-6-0x00000000048F0000-0x0000000004936000-memory.dmp

Filesize
280KB

Download
memory/1800-7-0x0000000004B00000-0x0000000004B40000-memory.dmp

Filesize
256KB

Download
memory/1800-1-0x0000000000380000-0x00000000003EC000-memory.dmp

Filesize
432KB

Download
memory/2588-4-0x0000000002940000-0x0000000002980000-memory.dmp

Filesize
256KB

Download
memory/2812-17-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/2812-9-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/2812-15-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/2812-13-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/2812-11-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/2812-20-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/2812-19-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2812-21-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download

Analysis

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