oski | a34e7c63da647c394b8becde55d6e87bc34e2c934c89b7f23484747a3598fb4c

General

Target

4d838fd7586e75e908483b1807bc29a6_JaffaCakes118.exe
Size

732KB
MD5

4d838fd7586e75e908483b1807bc29a6
SHA1

ab5e4e82d68462daec9ff1dc0fa81380d8991df0
SHA256

a34e7c63da647c394b8becde55d6e87bc34e2c934c89b7f23484747a3598fb4c
SHA512

df7980b4b9d058ef368c7c93069dcb5a8c689f755d0ca15a355bee5860cd167dcda1a3afbbf7ec9ab46f96690d6d7ee161f660219f049cc88c7841daef88c5fa
SSDEEP

12288:qQE4Ud4N5tA2P9qRLOhdKeE2gawV77yQ0wc0HK7zVRAtep79CqX8QXTfFteLSgQ3:T0Khd9g10wy51xCqXn3eWn+kGk85Upvj

Score

10^/10

oski discovery infostealer

Malware Config

Extracted

Family

oski

C2

cabvui.xyz

Signatures

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

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2788 set thread context of 1836	2788	4d838fd7586e75e908483b1807bc29a6_JaffaCakes118.exe	33

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2256	1836	WerFault.exe	33

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	4d838fd7586e75e908483b1807bc29a6_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4d838fd7586e75e908483b1807bc29a6_JaffaCakes118.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2788	4d838fd7586e75e908483b1807bc29a6_JaffaCakes118.exe
2788	4d838fd7586e75e908483b1807bc29a6_JaffaCakes118.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2788	4d838fd7586e75e908483b1807bc29a6_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 22 IoCs

description	pid	Process	procid_target
PID 2788 wrote to memory of 2180	2788	4d838fd7586e75e908483b1807bc29a6_JaffaCakes118.exe	31
PID 2788 wrote to memory of 2180	2788	4d838fd7586e75e908483b1807bc29a6_JaffaCakes118.exe	31
PID 2788 wrote to memory of 2180	2788	4d838fd7586e75e908483b1807bc29a6_JaffaCakes118.exe	31
PID 2788 wrote to memory of 2180	2788	4d838fd7586e75e908483b1807bc29a6_JaffaCakes118.exe	31
PID 2788 wrote to memory of 2196	2788	4d838fd7586e75e908483b1807bc29a6_JaffaCakes118.exe	32
PID 2788 wrote to memory of 2196	2788	4d838fd7586e75e908483b1807bc29a6_JaffaCakes118.exe	32
PID 2788 wrote to memory of 2196	2788	4d838fd7586e75e908483b1807bc29a6_JaffaCakes118.exe	32
PID 2788 wrote to memory of 2196	2788	4d838fd7586e75e908483b1807bc29a6_JaffaCakes118.exe	32
PID 2788 wrote to memory of 1836	2788	4d838fd7586e75e908483b1807bc29a6_JaffaCakes118.exe	33
PID 2788 wrote to memory of 1836	2788	4d838fd7586e75e908483b1807bc29a6_JaffaCakes118.exe	33
PID 2788 wrote to memory of 1836	2788	4d838fd7586e75e908483b1807bc29a6_JaffaCakes118.exe	33
PID 2788 wrote to memory of 1836	2788	4d838fd7586e75e908483b1807bc29a6_JaffaCakes118.exe	33
PID 2788 wrote to memory of 1836	2788	4d838fd7586e75e908483b1807bc29a6_JaffaCakes118.exe	33
PID 2788 wrote to memory of 1836	2788	4d838fd7586e75e908483b1807bc29a6_JaffaCakes118.exe	33
PID 2788 wrote to memory of 1836	2788	4d838fd7586e75e908483b1807bc29a6_JaffaCakes118.exe	33
PID 2788 wrote to memory of 1836	2788	4d838fd7586e75e908483b1807bc29a6_JaffaCakes118.exe	33
PID 2788 wrote to memory of 1836	2788	4d838fd7586e75e908483b1807bc29a6_JaffaCakes118.exe	33
PID 2788 wrote to memory of 1836	2788	4d838fd7586e75e908483b1807bc29a6_JaffaCakes118.exe	33
PID 1836 wrote to memory of 2256	1836	4d838fd7586e75e908483b1807bc29a6_JaffaCakes118.exe	34
PID 1836 wrote to memory of 2256	1836	4d838fd7586e75e908483b1807bc29a6_JaffaCakes118.exe	34
PID 1836 wrote to memory of 2256	1836	4d838fd7586e75e908483b1807bc29a6_JaffaCakes118.exe	34
PID 1836 wrote to memory of 2256	1836	4d838fd7586e75e908483b1807bc29a6_JaffaCakes118.exe	34

C:\Users\Admin\AppData\Local\Temp\4d838fd7586e75e908483b1807bc29a6_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\4d838fd7586e75e908483b1807bc29a6_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2788
- C:\Users\Admin\AppData\Local\Temp\4d838fd7586e75e908483b1807bc29a6_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\4d838fd7586e75e908483b1807bc29a6_JaffaCakes118.exe"
  2⤵
  PID:2180
- C:\Users\Admin\AppData\Local\Temp\4d838fd7586e75e908483b1807bc29a6_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\4d838fd7586e75e908483b1807bc29a6_JaffaCakes118.exe"
  2⤵
  PID:2196
- C:\Users\Admin\AppData\Local\Temp\4d838fd7586e75e908483b1807bc29a6_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\4d838fd7586e75e908483b1807bc29a6_JaffaCakes118.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1836
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1836 -s 112
    3⤵
    - Program crash
    PID:2256

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1836-16-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1836-11-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1836-8-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1836-18-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1836-9-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1836-14-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1836-13-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1836-10-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2788-5-0x0000000074910000-0x0000000074FFE000-memory.dmp

Filesize
6.9MB

Download
memory/2788-4-0x000000007491E000-0x000000007491F000-memory.dmp

Filesize
4KB

Download
memory/2788-7-0x0000000002070000-0x00000000020A8000-memory.dmp

Filesize
224KB

Download
memory/2788-2-0x0000000074910000-0x0000000074FFE000-memory.dmp

Filesize
6.9MB

Download
memory/2788-0-0x000000007491E000-0x000000007491F000-memory.dmp

Filesize
4KB

Download
memory/2788-6-0x0000000008170000-0x0000000008212000-memory.dmp

Filesize
648KB

Download
memory/2788-1-0x0000000000A20000-0x0000000000ADC000-memory.dmp

Filesize
752KB

Download
memory/2788-3-0x0000000000940000-0x0000000000956000-memory.dmp

Filesize
88KB

Download
memory/2788-19-0x0000000074910000-0x0000000074FFE000-memory.dmp

Filesize
6.9MB

Download

Analysis

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