oski | 43460a1724b2521dd5e97c68c16edfce9caf22d49452efd956a64db91b5935a7

General

Target

5f0969cdd00801051ff7f2afd2343ff3_JaffaCakes118.exe
Size

789KB
MD5

5f0969cdd00801051ff7f2afd2343ff3
SHA1

6bbf42e0b05b025e8162404435eb1b25cc07d5f8
SHA256

43460a1724b2521dd5e97c68c16edfce9caf22d49452efd956a64db91b5935a7
SHA512

0b89a31ae863641dd0b87a7cedb566241e0df84a685f7df73e04c14580b16f80d3042eeaae65a2a09f2772187ff73d0d833f2cfad0663ba4b4a1e8a66c23a9dd
SSDEEP

24576:seV+CQ38aT1m7NKsDTxe1/6hTMLevYWhzDcUjMFA:DV+CQ33T1m70sDTkhYM

Score

10^/10

oski discovery infostealer

Malware Config

Extracted

Family

oski

C2

tunqyuindia.com/mar3/

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 2380 set thread context of 2352	2380	5f0969cdd00801051ff7f2afd2343ff3_JaffaCakes118.exe	32

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
2748	2352	WerFault.exe	32

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	5f0969cdd00801051ff7f2afd2343ff3_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	5f0969cdd00801051ff7f2afd2343ff3_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
2784	schtasks.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 2380 wrote to memory of 2784	2380	5f0969cdd00801051ff7f2afd2343ff3_JaffaCakes118.exe	30
PID 2380 wrote to memory of 2784	2380	5f0969cdd00801051ff7f2afd2343ff3_JaffaCakes118.exe	30
PID 2380 wrote to memory of 2784	2380	5f0969cdd00801051ff7f2afd2343ff3_JaffaCakes118.exe	30
PID 2380 wrote to memory of 2784	2380	5f0969cdd00801051ff7f2afd2343ff3_JaffaCakes118.exe	30
PID 2380 wrote to memory of 2352	2380	5f0969cdd00801051ff7f2afd2343ff3_JaffaCakes118.exe	32
PID 2380 wrote to memory of 2352	2380	5f0969cdd00801051ff7f2afd2343ff3_JaffaCakes118.exe	32
PID 2380 wrote to memory of 2352	2380	5f0969cdd00801051ff7f2afd2343ff3_JaffaCakes118.exe	32
PID 2380 wrote to memory of 2352	2380	5f0969cdd00801051ff7f2afd2343ff3_JaffaCakes118.exe	32
PID 2380 wrote to memory of 2352	2380	5f0969cdd00801051ff7f2afd2343ff3_JaffaCakes118.exe	32
PID 2380 wrote to memory of 2352	2380	5f0969cdd00801051ff7f2afd2343ff3_JaffaCakes118.exe	32
PID 2380 wrote to memory of 2352	2380	5f0969cdd00801051ff7f2afd2343ff3_JaffaCakes118.exe	32
PID 2380 wrote to memory of 2352	2380	5f0969cdd00801051ff7f2afd2343ff3_JaffaCakes118.exe	32
PID 2380 wrote to memory of 2352	2380	5f0969cdd00801051ff7f2afd2343ff3_JaffaCakes118.exe	32
PID 2380 wrote to memory of 2352	2380	5f0969cdd00801051ff7f2afd2343ff3_JaffaCakes118.exe	32
PID 2352 wrote to memory of 2748	2352	5f0969cdd00801051ff7f2afd2343ff3_JaffaCakes118.exe	33
PID 2352 wrote to memory of 2748	2352	5f0969cdd00801051ff7f2afd2343ff3_JaffaCakes118.exe	33
PID 2352 wrote to memory of 2748	2352	5f0969cdd00801051ff7f2afd2343ff3_JaffaCakes118.exe	33
PID 2352 wrote to memory of 2748	2352	5f0969cdd00801051ff7f2afd2343ff3_JaffaCakes118.exe	33

C:\Users\Admin\AppData\Local\Temp\5f0969cdd00801051ff7f2afd2343ff3_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\5f0969cdd00801051ff7f2afd2343ff3_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2380
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\vTKyEeK" /XML "C:\Users\Admin\AppData\Local\Temp\tmp5F6F.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2784
- C:\Users\Admin\AppData\Local\Temp\5f0969cdd00801051ff7f2afd2343ff3_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\5f0969cdd00801051ff7f2afd2343ff3_JaffaCakes118.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2352
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2352 -s 112
    3⤵
    - Program crash
    PID:2748

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp5F6F.tmp

Filesize
1KB

MD5
64b83747daff85e1ec3f049fc6a9bfc6

SHA1
50dc42145c59d651df6e88cd050a02ab369a2e0e

SHA256
1f01f807c89249f1c9026da9ab0c3b119227c2adfa5e811f81274ba65ba1f023

SHA512
3bc0b9b71d465f9a7a4642d7ef5d4b3915fdf802aadd57a6d50e4694aa2710ed2f968ec65af3f8face2c2e431e3e33abe84cd93838747a82385b4aed9aa35ab2

Download Submit
memory/2352-26-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2352-15-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2352-16-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2352-18-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2352-21-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2352-22-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2352-24-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2352-14-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2380-4-0x00000000005C0000-0x00000000005D6000-memory.dmp

Filesize
88KB

Download
memory/2380-8-0x0000000004CA0000-0x0000000004CD8000-memory.dmp

Filesize
224KB

Download
memory/2380-7-0x000000000AFF0000-0x000000000B08C000-memory.dmp

Filesize
624KB

Download
memory/2380-6-0x0000000074DE0000-0x00000000754CE000-memory.dmp

Filesize
6.9MB

Download
memory/2380-5-0x0000000074DEE000-0x0000000074DEF000-memory.dmp

Filesize
4KB

Download
memory/2380-0-0x0000000074DEE000-0x0000000074DEF000-memory.dmp

Filesize
4KB

Download
memory/2380-3-0x0000000074DE0000-0x00000000754CE000-memory.dmp

Filesize
6.9MB

Download
memory/2380-2-0x0000000001F30000-0x0000000001FC0000-memory.dmp

Filesize
576KB

Download
memory/2380-1-0x00000000000C0000-0x000000000018A000-memory.dmp

Filesize
808KB

Download
memory/2380-27-0x0000000074DE0000-0x00000000754CE000-memory.dmp

Filesize
6.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads