oski | 65d44c4290e2bab8287d1a51f22a5ce6b72e989126975bd9e99692a693008b0f

Analysis

max time kernel
117s
max time network
118s
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

$PLUGINSDIR/bjvymjgfvgw.dll
Size

21KB
MD5

c82d0e41e34f602a656c7b2383b461c3
SHA1

5d6cda3477276064e3f68c5e46819b7c59439667
SHA256

10a63a0ce01a0ee1af0fea454eba728754e4c8baf040965bc49cc850556436d7
SHA512

8ad0f3038d13b0efaca3a19fdce1d6b77ff5b78f1dc994bd8bbcfe909752e66abfc5550e494b6aaae0bbe043500c9bcd1f4e8d055eb2c41432cbf62316ca709b
SSDEEP

384:OKQcFRDe82Eods0/9GGCIZKR7dYJS2N7vV:xQcFR6rfgj+RJ

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

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1664	2324	WerFault.exe	31

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	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 592 wrote to memory of 2212	592	rundll32.exe	30
PID 592 wrote to memory of 2212	592	rundll32.exe	30
PID 592 wrote to memory of 2212	592	rundll32.exe	30
PID 592 wrote to memory of 2212	592	rundll32.exe	30
PID 592 wrote to memory of 2212	592	rundll32.exe	30
PID 592 wrote to memory of 2212	592	rundll32.exe	30
PID 592 wrote to memory of 2212	592	rundll32.exe	30
PID 2212 wrote to memory of 2324	2212	rundll32.exe	31
PID 2212 wrote to memory of 2324	2212	rundll32.exe	31
PID 2212 wrote to memory of 2324	2212	rundll32.exe	31
PID 2212 wrote to memory of 2324	2212	rundll32.exe	31
PID 2212 wrote to memory of 2324	2212	rundll32.exe	31
PID 2212 wrote to memory of 2324	2212	rundll32.exe	31
PID 2212 wrote to memory of 2324	2212	rundll32.exe	31
PID 2212 wrote to memory of 2324	2212	rundll32.exe	31
PID 2212 wrote to memory of 2324	2212	rundll32.exe	31
PID 2212 wrote to memory of 2324	2212	rundll32.exe	31
PID 2212 wrote to memory of 2324	2212	rundll32.exe	31
PID 2212 wrote to memory of 2324	2212	rundll32.exe	31
PID 2212 wrote to memory of 2324	2212	rundll32.exe	31
PID 2324 wrote to memory of 1664	2324	rundll32.exe	32
PID 2324 wrote to memory of 1664	2324	rundll32.exe	32
PID 2324 wrote to memory of 1664	2324	rundll32.exe	32
PID 2324 wrote to memory of 1664	2324	rundll32.exe	32

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\bjvymjgfvgw.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:592
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\bjvymjgfvgw.dll,#1
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2212
- - C:\Windows\SysWOW64\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\bjvymjgfvgw.dll,#1
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2324
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2324 -s 220
      4⤵
      Program crash
      PID:1664

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/2212-0-0x00000000746F5000-0x00000000746F7000-memory.dmp

Filesize
8KB

Download
memory/2324-1-0x0000000000090000-0x00000000000C8000-memory.dmp

Filesize
224KB

Download
memory/2324-5-0x0000000000090000-0x00000000000C8000-memory.dmp

Filesize
224KB

Download
memory/2324-9-0x0000000000090000-0x00000000000C8000-memory.dmp

Filesize
224KB

Download
memory/2324-8-0x0000000000090000-0x00000000000C8000-memory.dmp

Filesize
224KB

Download