oski | 65d44c4290e2bab8287d1a51f22a5ce6b72e989126975bd9e99692a693008b0f

Analysis

max time kernel
121s
max time network
122s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
08-01-2025 20:33

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General

Target

JaffaCakes118_ab031839b4f841c3b709fdeb2f8d2889.exe
Size

375KB
MD5

ab031839b4f841c3b709fdeb2f8d2889
SHA1

6c9e7d0f2a212fda955802586713d8996ff5d11d
SHA256

65d44c4290e2bab8287d1a51f22a5ce6b72e989126975bd9e99692a693008b0f
SHA512

0c4cb8190b9bce977b3df9cc12b725967cd68e8bb689c587306496bb835216174f838785f45720f7721c7be3f55abaf552dd310c0bd9dd352a8143826d3f7755
SSDEEP

6144:1BlL/G4BUKkY3PBmgaklTZFbsIG5RQzq6IvpnwxByMmSo/mpC:jY4BNPBTaSZqIG5RQWd1HNOpC

Score

10^/10

oski discovery infostealer

Malware Config

Extracted

Family

oski

vegas1e.xyz

Signatures

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

Loads dropped DLL 1 IoCs

pid	Process
2868	JaffaCakes118_ab031839b4f841c3b709fdeb2f8d2889.exe

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
2880	1700	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_ab031839b4f841c3b709fdeb2f8d2889.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_ab031839b4f841c3b709fdeb2f8d2889.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 2868 wrote to memory of 1700	2868	JaffaCakes118_ab031839b4f841c3b709fdeb2f8d2889.exe	28
PID 2868 wrote to memory of 1700	2868	JaffaCakes118_ab031839b4f841c3b709fdeb2f8d2889.exe	28
PID 2868 wrote to memory of 1700	2868	JaffaCakes118_ab031839b4f841c3b709fdeb2f8d2889.exe	28
PID 2868 wrote to memory of 1700	2868	JaffaCakes118_ab031839b4f841c3b709fdeb2f8d2889.exe	28
PID 2868 wrote to memory of 1700	2868	JaffaCakes118_ab031839b4f841c3b709fdeb2f8d2889.exe	28
PID 2868 wrote to memory of 1700	2868	JaffaCakes118_ab031839b4f841c3b709fdeb2f8d2889.exe	28
PID 2868 wrote to memory of 1700	2868	JaffaCakes118_ab031839b4f841c3b709fdeb2f8d2889.exe	28
PID 2868 wrote to memory of 1700	2868	JaffaCakes118_ab031839b4f841c3b709fdeb2f8d2889.exe	28
PID 2868 wrote to memory of 1700	2868	JaffaCakes118_ab031839b4f841c3b709fdeb2f8d2889.exe	28
PID 2868 wrote to memory of 1700	2868	JaffaCakes118_ab031839b4f841c3b709fdeb2f8d2889.exe	28
PID 1700 wrote to memory of 2880	1700	JaffaCakes118_ab031839b4f841c3b709fdeb2f8d2889.exe	29
PID 1700 wrote to memory of 2880	1700	JaffaCakes118_ab031839b4f841c3b709fdeb2f8d2889.exe	29
PID 1700 wrote to memory of 2880	1700	JaffaCakes118_ab031839b4f841c3b709fdeb2f8d2889.exe	29
PID 1700 wrote to memory of 2880	1700	JaffaCakes118_ab031839b4f841c3b709fdeb2f8d2889.exe	29

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ab031839b4f841c3b709fdeb2f8d2889.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ab031839b4f841c3b709fdeb2f8d2889.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2868
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ab031839b4f841c3b709fdeb2f8d2889.exe
  "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ab031839b4f841c3b709fdeb2f8d2889.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1700
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1700 -s 112
    3⤵
    - Program crash
    PID:2880

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\nso88FF.tmp\bjvymjgfvgw.dll

Filesize
21KB

MD5
c82d0e41e34f602a656c7b2383b461c3

SHA1
5d6cda3477276064e3f68c5e46819b7c59439667

SHA256
10a63a0ce01a0ee1af0fea454eba728754e4c8baf040965bc49cc850556436d7

SHA512
8ad0f3038d13b0efaca3a19fdce1d6b77ff5b78f1dc994bd8bbcfe909752e66abfc5550e494b6aaae0bbe043500c9bcd1f4e8d055eb2c41432cbf62316ca709b

Download Submit
memory/1700-9-0x00000000001C0000-0x00000000001F8000-memory.dmp

Filesize
224KB

Download
memory/1700-13-0x00000000001C0000-0x00000000001F8000-memory.dmp

Filesize
224KB

Download
memory/1700-16-0x00000000001C0000-0x00000000001F8000-memory.dmp

Filesize
224KB

Download
memory/2868-7-0x0000000074AE5000-0x0000000074AE7000-memory.dmp

Filesize
8KB

Download