oski | 0de7c8162475fd23b09cdf728f0e90cf25250d0173befbfc4f8f3e59da9d4ef6

Analysis

max time kernel
132s
max time network
94s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
15-09-2024 02:11

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General

Target

e1808a961fe59c96882ce11133d4b8d1_JaffaCakes118.exe
Size

457KB
MD5

e1808a961fe59c96882ce11133d4b8d1
SHA1

041e2777f1ea56ef08554185ca592d81a7f3241f
SHA256

0de7c8162475fd23b09cdf728f0e90cf25250d0173befbfc4f8f3e59da9d4ef6
SHA512

d727f8abdfeb938e5627e6d37879d01af623624ebfe39106b48e808619431011f8e7feab3f70bef0035e6dc5847a1a874a00150414f380a7b07828a54f47f137
SSDEEP

12288:3s0ha9d1cQ15S/vOZYnuPyCNbrMUF8GxfK:3s0hqcdUhmCC

Score

10^/10

oski discovery infostealer

Malware Config

Extracted

Family

oski

195.133.147.113

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 3600 set thread context of 556	3600	e1808a961fe59c96882ce11133d4b8d1_JaffaCakes118.exe	96

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3640	556	WerFault.exe	96

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	RegAsm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	e1808a961fe59c96882ce11133d4b8d1_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 3600 wrote to memory of 556	3600	e1808a961fe59c96882ce11133d4b8d1_JaffaCakes118.exe	96
PID 3600 wrote to memory of 556	3600	e1808a961fe59c96882ce11133d4b8d1_JaffaCakes118.exe	96
PID 3600 wrote to memory of 556	3600	e1808a961fe59c96882ce11133d4b8d1_JaffaCakes118.exe	96
PID 3600 wrote to memory of 556	3600	e1808a961fe59c96882ce11133d4b8d1_JaffaCakes118.exe	96
PID 3600 wrote to memory of 556	3600	e1808a961fe59c96882ce11133d4b8d1_JaffaCakes118.exe	96
PID 3600 wrote to memory of 556	3600	e1808a961fe59c96882ce11133d4b8d1_JaffaCakes118.exe	96
PID 3600 wrote to memory of 556	3600	e1808a961fe59c96882ce11133d4b8d1_JaffaCakes118.exe	96
PID 3600 wrote to memory of 556	3600	e1808a961fe59c96882ce11133d4b8d1_JaffaCakes118.exe	96
PID 3600 wrote to memory of 556	3600	e1808a961fe59c96882ce11133d4b8d1_JaffaCakes118.exe	96

C:\Users\Admin\AppData\Local\Temp\e1808a961fe59c96882ce11133d4b8d1_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\e1808a961fe59c96882ce11133d4b8d1_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3600
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:556
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 556 -s 552
    3⤵
    - Program crash
    PID:3640

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 556 -ip 556
1⤵
PID:1164

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

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Downloads

memory/556-10-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/556-14-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/556-16-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/556-13-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/3600-6-0x0000000009910000-0x0000000009EB4000-memory.dmp

Filesize
5.6MB

Download
memory/3600-5-0x0000000074530000-0x0000000074CE0000-memory.dmp

Filesize
7.7MB

Download
memory/3600-0-0x000000007453E000-0x000000007453F000-memory.dmp

Filesize
4KB

Download
memory/3600-7-0x0000000000AA0000-0x0000000000AD2000-memory.dmp

Filesize
200KB

Download
memory/3600-8-0x0000000004E80000-0x0000000004F12000-memory.dmp

Filesize
584KB

Download
memory/3600-9-0x0000000000B30000-0x0000000000B44000-memory.dmp

Filesize
80KB

Download
memory/3600-4-0x000000007453E000-0x000000007453F000-memory.dmp

Filesize
4KB

Download
memory/3600-12-0x0000000074530000-0x0000000074CE0000-memory.dmp

Filesize
7.7MB

Download
memory/3600-3-0x0000000074530000-0x0000000074CE0000-memory.dmp

Filesize
7.7MB

Download
memory/3600-2-0x0000000004A50000-0x0000000004A56000-memory.dmp

Filesize
24KB

Download
memory/3600-1-0x00000000000F0000-0x0000000000166000-memory.dmp

Filesize
472KB

Download