oski | 2d07cce707ba7637c75311e428b10c88534cc71023f2b1265c0de3af452ba996

Analysis

max time kernel
150s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
18-12-2023 20:52

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General

Target

2d07cce707ba7637c75311e428b10c88534cc71023f2b1265c0de3af452ba996.exe
Size

608KB
MD5

a513dcf625df4909a341fa22995ce99c
SHA1

6746281bfd98f359bb2ed40da4a7e5f78f25c0a2
SHA256

2d07cce707ba7637c75311e428b10c88534cc71023f2b1265c0de3af452ba996
SHA512

81c5b8fc6e3a93702f42d482348fe61e448b876f29869003f9d47606b8a08bdf572c9e1e8aaf4759430a940357cc1119bb86e2a81d407b145209fd5eaa0e416e
SSDEEP

12288:C8HN29FWOs+sxEVvib9ybSYQSXdNzUSGq0Ygsv:PHN7xl5yWydxUSGq0Ygs

Score

10^/10

oski infostealer spyware stealer

Malware Config

Extracted

Family

oski

cubicatransport.net

Signatures

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

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1815711207-1844170477-3539718864-1000\Control Panel\International\Geo\Nation	2d07cce707ba7637c75311e428b10c88534cc71023f2b1265c0de3af452ba996.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1788 set thread context of 4948	1788	2d07cce707ba7637c75311e428b10c88534cc71023f2b1265c0de3af452ba996.exe	98

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
2264	4948	WerFault.exe	98

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
5116	powershell.exe
5116	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	5116	powershell.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1788 wrote to memory of 5116	1788	2d07cce707ba7637c75311e428b10c88534cc71023f2b1265c0de3af452ba996.exe	96
PID 1788 wrote to memory of 5116	1788	2d07cce707ba7637c75311e428b10c88534cc71023f2b1265c0de3af452ba996.exe	96
PID 1788 wrote to memory of 5116	1788	2d07cce707ba7637c75311e428b10c88534cc71023f2b1265c0de3af452ba996.exe	96
PID 1788 wrote to memory of 4948	1788	2d07cce707ba7637c75311e428b10c88534cc71023f2b1265c0de3af452ba996.exe	98
PID 1788 wrote to memory of 4948	1788	2d07cce707ba7637c75311e428b10c88534cc71023f2b1265c0de3af452ba996.exe	98
PID 1788 wrote to memory of 4948	1788	2d07cce707ba7637c75311e428b10c88534cc71023f2b1265c0de3af452ba996.exe	98
PID 1788 wrote to memory of 4948	1788	2d07cce707ba7637c75311e428b10c88534cc71023f2b1265c0de3af452ba996.exe	98
PID 1788 wrote to memory of 4948	1788	2d07cce707ba7637c75311e428b10c88534cc71023f2b1265c0de3af452ba996.exe	98
PID 1788 wrote to memory of 4948	1788	2d07cce707ba7637c75311e428b10c88534cc71023f2b1265c0de3af452ba996.exe	98
PID 1788 wrote to memory of 4948	1788	2d07cce707ba7637c75311e428b10c88534cc71023f2b1265c0de3af452ba996.exe	98
PID 1788 wrote to memory of 4948	1788	2d07cce707ba7637c75311e428b10c88534cc71023f2b1265c0de3af452ba996.exe	98
PID 1788 wrote to memory of 4948	1788	2d07cce707ba7637c75311e428b10c88534cc71023f2b1265c0de3af452ba996.exe	98

C:\Users\Admin\AppData\Local\Temp\2d07cce707ba7637c75311e428b10c88534cc71023f2b1265c0de3af452ba996.exe
"C:\Users\Admin\AppData\Local\Temp\2d07cce707ba7637c75311e428b10c88534cc71023f2b1265c0de3af452ba996.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1788
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\2d07cce707ba7637c75311e428b10c88534cc71023f2b1265c0de3af452ba996.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:5116
- C:\Users\Admin\AppData\Local\Temp\2d07cce707ba7637c75311e428b10c88534cc71023f2b1265c0de3af452ba996.exe
  "C:\Users\Admin\AppData\Local\Temp\2d07cce707ba7637c75311e428b10c88534cc71023f2b1265c0de3af452ba996.exe"
  2⤵
  PID:4948
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4948 -s 1328
    3⤵
    - Program crash
    PID:2264

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 4948 -ip 4948
1⤵
PID:1476

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

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Downloads

C:\ProgramData\msvcp140.dll

Filesize
281B

MD5
bbdf4c3f124554d87abc177e9b6ae5fc

SHA1
2ebb03cb3e01af0120521e22bfa569334a676107

SHA256
142927159f905725e6107eb13399ad4617596712f32e61b5d3bfb00129f87705

SHA512
ed7d9f91d3df6e3116d537093908299e58c8e3c8d7644e0a323ddab07f8d62556ccd78bc7a2ebe19351f215040103ed10cdc2a5af9eb9b9d927750d6e844a049

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_hqkknedm.f00.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1788-8-0x0000000005890000-0x00000000058A0000-memory.dmp

Filesize
64KB

Download
memory/1788-17-0x0000000075000000-0x00000000757B0000-memory.dmp

Filesize
7.7MB

Download
memory/1788-4-0x0000000005890000-0x00000000058A0000-memory.dmp

Filesize
64KB

Download
memory/1788-5-0x00000000056C0000-0x00000000056CA000-memory.dmp

Filesize
40KB

Download
memory/1788-6-0x0000000005B10000-0x0000000005B1C000-memory.dmp

Filesize
48KB

Download
memory/1788-7-0x0000000075000000-0x00000000757B0000-memory.dmp

Filesize
7.7MB

Download
memory/1788-0-0x0000000075000000-0x00000000757B0000-memory.dmp

Filesize
7.7MB

Download
memory/1788-9-0x0000000006C40000-0x0000000006CDC000-memory.dmp

Filesize
624KB

Download
memory/1788-10-0x0000000006ED0000-0x0000000006F3C000-memory.dmp

Filesize
432KB

Download
memory/1788-3-0x00000000056E0000-0x0000000005772000-memory.dmp

Filesize
584KB

Download
memory/1788-1-0x0000000000C20000-0x0000000000CBC000-memory.dmp

Filesize
624KB

Download
memory/1788-2-0x0000000005BF0000-0x0000000006194000-memory.dmp

Filesize
5.6MB

Download
memory/4948-11-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4948-18-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4948-47-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4948-14-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4948-12-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/5116-27-0x0000000005E40000-0x0000000005EA6000-memory.dmp

Filesize
408KB

Download
memory/5116-50-0x00000000720A0000-0x00000000720EC000-memory.dmp

Filesize
304KB

Download
memory/5116-26-0x0000000005570000-0x0000000005592000-memory.dmp

Filesize
136KB

Download
memory/5116-23-0x00000000055E0000-0x0000000005C08000-memory.dmp

Filesize
6.2MB

Download
memory/5116-19-0x0000000004F60000-0x0000000004F96000-memory.dmp

Filesize
216KB

Download
memory/5116-33-0x0000000005F20000-0x0000000005F86000-memory.dmp

Filesize
408KB

Download
memory/5116-16-0x0000000004FA0000-0x0000000004FB0000-memory.dmp

Filesize
64KB

Download
memory/5116-40-0x0000000006090000-0x00000000063E4000-memory.dmp

Filesize
3.3MB

Download
memory/5116-42-0x0000000006560000-0x000000000657E000-memory.dmp

Filesize
120KB

Download
memory/5116-45-0x00000000065A0000-0x00000000065EC000-memory.dmp

Filesize
304KB

Download
memory/5116-15-0x0000000075000000-0x00000000757B0000-memory.dmp

Filesize
7.7MB

Download
memory/5116-48-0x0000000004FA0000-0x0000000004FB0000-memory.dmp

Filesize
64KB

Download
memory/5116-49-0x0000000006B20000-0x0000000006B52000-memory.dmp

Filesize
200KB

Download
memory/5116-22-0x0000000004FA0000-0x0000000004FB0000-memory.dmp

Filesize
64KB

Download
memory/5116-60-0x0000000006B00000-0x0000000006B1E000-memory.dmp

Filesize
120KB

Download
memory/5116-61-0x0000000007760000-0x0000000007803000-memory.dmp

Filesize
652KB

Download
memory/5116-62-0x0000000007EA0000-0x000000000851A000-memory.dmp

Filesize
6.5MB

Download
memory/5116-63-0x0000000007860000-0x000000000787A000-memory.dmp

Filesize
104KB

Download
memory/5116-64-0x00000000078D0000-0x00000000078DA000-memory.dmp

Filesize
40KB

Download
memory/5116-65-0x0000000007AE0000-0x0000000007B76000-memory.dmp

Filesize
600KB

Download
memory/5116-66-0x0000000007A60000-0x0000000007A71000-memory.dmp

Filesize
68KB

Download
memory/5116-67-0x0000000007AB0000-0x0000000007ABE000-memory.dmp

Filesize
56KB

Download
memory/5116-68-0x0000000007AC0000-0x0000000007AD4000-memory.dmp

Filesize
80KB

Download
memory/5116-69-0x0000000007BC0000-0x0000000007BDA000-memory.dmp

Filesize
104KB

Download
memory/5116-70-0x0000000007BA0000-0x0000000007BA8000-memory.dmp

Filesize
32KB

Download
memory/5116-73-0x0000000075000000-0x00000000757B0000-memory.dmp

Filesize
7.7MB

Download