oski | 92e2cc7980fc342c59860a0e6a16c73f10ee3b0caac53530121e89448933d305

General

Target

JaffaCakes118_960586bdf44ca1fcb8e80cd5846a77b6.exe
Size

311KB
MD5

960586bdf44ca1fcb8e80cd5846a77b6
SHA1

50d76e219c07a9dc6d7fd827c9fe9f3ef050cfcb
SHA256

92e2cc7980fc342c59860a0e6a16c73f10ee3b0caac53530121e89448933d305
SHA512

1e2676c0357d3d1c1177d36816c84c5157956afc2d0ef30aa4fd0ea3aef3150cec31e3a9cdcd31a6d71b8cd2429973e27584e7a9b8003be475c935e31e1a283b
SSDEEP

6144:su9GzKRez4NQntICmsEkmnzmlkyW0RE/GpQt3m8w2QJIsgozaFLF:dGzTz4NayXixEOpsmXJ/giU

Score

10^/10

oski discovery infostealer spyware stealer

Malware Config

Extracted

Family

oski

C2

scarsa.ac.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 2828 set thread context of 2840	2828	JaffaCakes118_960586bdf44ca1fcb8e80cd5846a77b6.exe	28

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2520	2840	WerFault.exe	28

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_960586bdf44ca1fcb8e80cd5846a77b6.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_960586bdf44ca1fcb8e80cd5846a77b6.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2828	JaffaCakes118_960586bdf44ca1fcb8e80cd5846a77b6.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2828	JaffaCakes118_960586bdf44ca1fcb8e80cd5846a77b6.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 2828 wrote to memory of 2840	2828	JaffaCakes118_960586bdf44ca1fcb8e80cd5846a77b6.exe	28
PID 2828 wrote to memory of 2840	2828	JaffaCakes118_960586bdf44ca1fcb8e80cd5846a77b6.exe	28
PID 2828 wrote to memory of 2840	2828	JaffaCakes118_960586bdf44ca1fcb8e80cd5846a77b6.exe	28
PID 2828 wrote to memory of 2840	2828	JaffaCakes118_960586bdf44ca1fcb8e80cd5846a77b6.exe	28
PID 2828 wrote to memory of 2840	2828	JaffaCakes118_960586bdf44ca1fcb8e80cd5846a77b6.exe	28
PID 2828 wrote to memory of 2840	2828	JaffaCakes118_960586bdf44ca1fcb8e80cd5846a77b6.exe	28
PID 2828 wrote to memory of 2840	2828	JaffaCakes118_960586bdf44ca1fcb8e80cd5846a77b6.exe	28
PID 2828 wrote to memory of 2840	2828	JaffaCakes118_960586bdf44ca1fcb8e80cd5846a77b6.exe	28
PID 2828 wrote to memory of 2840	2828	JaffaCakes118_960586bdf44ca1fcb8e80cd5846a77b6.exe	28
PID 2828 wrote to memory of 2840	2828	JaffaCakes118_960586bdf44ca1fcb8e80cd5846a77b6.exe	28
PID 2840 wrote to memory of 2520	2840	JaffaCakes118_960586bdf44ca1fcb8e80cd5846a77b6.exe	33
PID 2840 wrote to memory of 2520	2840	JaffaCakes118_960586bdf44ca1fcb8e80cd5846a77b6.exe	33
PID 2840 wrote to memory of 2520	2840	JaffaCakes118_960586bdf44ca1fcb8e80cd5846a77b6.exe	33
PID 2840 wrote to memory of 2520	2840	JaffaCakes118_960586bdf44ca1fcb8e80cd5846a77b6.exe	33

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_960586bdf44ca1fcb8e80cd5846a77b6.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_960586bdf44ca1fcb8e80cd5846a77b6.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2828
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_960586bdf44ca1fcb8e80cd5846a77b6.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_960586bdf44ca1fcb8e80cd5846a77b6.exe
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2840
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2840 -s 768
    3⤵
    - Program crash
    PID:2520

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

Loading Replay Monitor...

Downloads

memory/2828-0-0x00000000740DE000-0x00000000740DF000-memory.dmp

Filesize
4KB

Download
memory/2828-1-0x0000000000020000-0x0000000000074000-memory.dmp

Filesize
336KB

Download
memory/2828-2-0x00000000003C0000-0x0000000000408000-memory.dmp

Filesize
288KB

Download
memory/2828-3-0x00000000007A0000-0x00000000007C8000-memory.dmp

Filesize
160KB

Download
memory/2828-4-0x00000000740D0000-0x00000000747BE000-memory.dmp

Filesize
6.9MB

Download
memory/2828-18-0x00000000740D0000-0x00000000747BE000-memory.dmp

Filesize
6.9MB

Download
memory/2840-7-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/2840-11-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/2840-12-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2840-9-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/2840-10-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/2840-5-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/2840-16-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/2840-17-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/2840-14-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/2840-20-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download

Analysis

Sharing