oski | 608e74643884b5e54701cf0e7a15dbf18ff2a86676f94b118ff1dafa3b4e03dd

General

Target

JaffaCakes118_5249cba6e9ad2cc38bb1dd7fa259e854.exe
Size

418KB
MD5

5249cba6e9ad2cc38bb1dd7fa259e854
SHA1

518e393a330d5edbb88c4d059df35ecfb634ccb7
SHA256

608e74643884b5e54701cf0e7a15dbf18ff2a86676f94b118ff1dafa3b4e03dd
SHA512

cf1b31bd9cb9358de9b3acbe03222ff90fd0f9ecaca6c4a7bea3f5b97ceae5f60ab06833d6f7dca2fd69798260d9a328145c08aa4189f2fbac5db041b1b9aa16
SSDEEP

6144:Yz3ogwdGRIHLeJs3dfn2Vjcn/Vgth59QFCMSiBtX3Y42Tv25aoZ1Y:YroNdpCJEf2VIn/Vs3SCgrYFkNS

Score

10^/10

oski discovery infostealer spyware stealer

Malware Config

Extracted

Family

oski

C2

samkoproducts.xyz

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 1652 set thread context of 3420	1652	JaffaCakes118_5249cba6e9ad2cc38bb1dd7fa259e854.exe	100

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4296	3420	WerFault.exe	100

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	JaffaCakes118_5249cba6e9ad2cc38bb1dd7fa259e854.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_5249cba6e9ad2cc38bb1dd7fa259e854.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1652	JaffaCakes118_5249cba6e9ad2cc38bb1dd7fa259e854.exe
1652	JaffaCakes118_5249cba6e9ad2cc38bb1dd7fa259e854.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1652	JaffaCakes118_5249cba6e9ad2cc38bb1dd7fa259e854.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1652 wrote to memory of 2944	1652	JaffaCakes118_5249cba6e9ad2cc38bb1dd7fa259e854.exe	99
PID 1652 wrote to memory of 2944	1652	JaffaCakes118_5249cba6e9ad2cc38bb1dd7fa259e854.exe	99
PID 1652 wrote to memory of 2944	1652	JaffaCakes118_5249cba6e9ad2cc38bb1dd7fa259e854.exe	99
PID 1652 wrote to memory of 3420	1652	JaffaCakes118_5249cba6e9ad2cc38bb1dd7fa259e854.exe	100
PID 1652 wrote to memory of 3420	1652	JaffaCakes118_5249cba6e9ad2cc38bb1dd7fa259e854.exe	100
PID 1652 wrote to memory of 3420	1652	JaffaCakes118_5249cba6e9ad2cc38bb1dd7fa259e854.exe	100
PID 1652 wrote to memory of 3420	1652	JaffaCakes118_5249cba6e9ad2cc38bb1dd7fa259e854.exe	100
PID 1652 wrote to memory of 3420	1652	JaffaCakes118_5249cba6e9ad2cc38bb1dd7fa259e854.exe	100
PID 1652 wrote to memory of 3420	1652	JaffaCakes118_5249cba6e9ad2cc38bb1dd7fa259e854.exe	100
PID 1652 wrote to memory of 3420	1652	JaffaCakes118_5249cba6e9ad2cc38bb1dd7fa259e854.exe	100
PID 1652 wrote to memory of 3420	1652	JaffaCakes118_5249cba6e9ad2cc38bb1dd7fa259e854.exe	100
PID 1652 wrote to memory of 3420	1652	JaffaCakes118_5249cba6e9ad2cc38bb1dd7fa259e854.exe	100

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_5249cba6e9ad2cc38bb1dd7fa259e854.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_5249cba6e9ad2cc38bb1dd7fa259e854.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1652
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_5249cba6e9ad2cc38bb1dd7fa259e854.exe
  "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_5249cba6e9ad2cc38bb1dd7fa259e854.exe"
  2⤵
  PID:2944
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_5249cba6e9ad2cc38bb1dd7fa259e854.exe
  "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_5249cba6e9ad2cc38bb1dd7fa259e854.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3420
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 3420 -s 1328
    3⤵
    - Program crash
    PID:4296

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3420 -ip 3420
1⤵
PID:3664

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 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/1652-8-0x000000007506E000-0x000000007506F000-memory.dmp

Filesize
4KB

Download
memory/1652-4-0x0000000005280000-0x000000000528A000-memory.dmp

Filesize
40KB

Download
memory/1652-0-0x000000007506E000-0x000000007506F000-memory.dmp

Filesize
4KB

Download
memory/1652-3-0x0000000005310000-0x00000000053A2000-memory.dmp

Filesize
584KB

Download
memory/1652-9-0x0000000075060000-0x0000000075810000-memory.dmp

Filesize
7.7MB

Download
memory/1652-5-0x0000000075060000-0x0000000075810000-memory.dmp

Filesize
7.7MB

Download
memory/1652-6-0x0000000006650000-0x00000000066EC000-memory.dmp

Filesize
624KB

Download
memory/1652-10-0x00000000069F0000-0x0000000006A4C000-memory.dmp

Filesize
368KB

Download
memory/1652-2-0x0000000005820000-0x0000000005DC4000-memory.dmp

Filesize
5.6MB

Download
memory/1652-1-0x0000000000840000-0x00000000008AE000-memory.dmp

Filesize
440KB

Download
memory/1652-7-0x00000000057C0000-0x00000000057CE000-memory.dmp

Filesize
56KB

Download
memory/1652-16-0x0000000075060000-0x0000000075810000-memory.dmp

Filesize
7.7MB

Download
memory/3420-12-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3420-13-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3420-15-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3420-11-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3420-19-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download

Analysis

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