oski | a2ae38d4b467bc8ab66ae53b28bd01365e9240b83f7f5e952d42c2aee0eae3ca

Analysis

max time kernel
136s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
22-12-2023 14:49

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General

Target

cc4bdd8e7f88763262c4634434b1dd77.exe
Size

1.1MB
MD5

cc4bdd8e7f88763262c4634434b1dd77
SHA1

f79dafab3b401354ee39c1e212cbd2f7b578971a
SHA256

a2ae38d4b467bc8ab66ae53b28bd01365e9240b83f7f5e952d42c2aee0eae3ca
SHA512

dbf2a96ad199051dd7466c164024dca35b08b09d6a5384a1f5aea0ca6f3474f1e1dd9a8d329676bfd4e4271494c2de0a276c59e1f677ce4696c34292bc2e8b36
SSDEEP

24576:4MXD6D+Xq6Hy1Tl99QQdt7eq7XrN7xoeizky+Vr8x:zXD6D+6Z1Tri4r7o9aVox

Score

10^/10

oski infostealer spyware stealer

Malware Config

Extracted

Family

oski

176.113.82.180

Signatures

Oski
Oski is an infostealer targeting browser data, crypto wallets.
infostealer oski
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 4580 set thread context of 3516	4580	cc4bdd8e7f88763262c4634434b1dd77.exe	97

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2844	3516	WerFault.exe	97

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
4580	cc4bdd8e7f88763262c4634434b1dd77.exe
4580	cc4bdd8e7f88763262c4634434b1dd77.exe
4580	cc4bdd8e7f88763262c4634434b1dd77.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4580	cc4bdd8e7f88763262c4634434b1dd77.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 4580 wrote to memory of 3516	4580	cc4bdd8e7f88763262c4634434b1dd77.exe	97
PID 4580 wrote to memory of 3516	4580	cc4bdd8e7f88763262c4634434b1dd77.exe	97
PID 4580 wrote to memory of 3516	4580	cc4bdd8e7f88763262c4634434b1dd77.exe	97
PID 4580 wrote to memory of 3516	4580	cc4bdd8e7f88763262c4634434b1dd77.exe	97
PID 4580 wrote to memory of 3516	4580	cc4bdd8e7f88763262c4634434b1dd77.exe	97
PID 4580 wrote to memory of 3516	4580	cc4bdd8e7f88763262c4634434b1dd77.exe	97
PID 4580 wrote to memory of 3516	4580	cc4bdd8e7f88763262c4634434b1dd77.exe	97
PID 4580 wrote to memory of 3516	4580	cc4bdd8e7f88763262c4634434b1dd77.exe	97
PID 4580 wrote to memory of 3516	4580	cc4bdd8e7f88763262c4634434b1dd77.exe	97

C:\Users\Admin\AppData\Local\Temp\cc4bdd8e7f88763262c4634434b1dd77.exe
"C:\Users\Admin\AppData\Local\Temp\cc4bdd8e7f88763262c4634434b1dd77.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4580
- C:\Users\Admin\AppData\Local\Temp\cc4bdd8e7f88763262c4634434b1dd77.exe
  "{path}"
  2⤵
  PID:3516
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 3516 -s 1280
    3⤵
    - Program crash
    PID:2844

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 200 -p 3516 -ip 3516
1⤵
PID:2460

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

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\ProgramData\msvcp140.dll

Filesize
458B

MD5
0a3e69b8b37a6df0acd7e7f5d9d3b854

SHA1
680de96cfe2aff1b030bfbd4a7cfa2529993ea61

SHA256
0f3a07f36d6bddee418f7d7548bc165b09817e10764a359d2773388cdec9ff8a

SHA512
9c5c0679e082a5776536835110b90436cd6531e3b2c4fc7a15bdce7f550d6647447c904e68d660faf81e39c108e17198830e8b133e86d8559180fa6fb5ce25c7

Download Submit
memory/3516-14-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3516-30-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3516-18-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3516-15-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3516-17-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4580-4-0x0000000005860000-0x0000000005E04000-memory.dmp

Filesize
5.6MB

Download
memory/4580-13-0x0000000008F30000-0x0000000008F68000-memory.dmp

Filesize
224KB

Download
memory/4580-8-0x0000000006900000-0x000000000695C000-memory.dmp

Filesize
368KB

Download
memory/4580-9-0x0000000005290000-0x00000000052A0000-memory.dmp

Filesize
64KB

Download
memory/4580-10-0x00000000750E0000-0x0000000075890000-memory.dmp

Filesize
7.7MB

Download
memory/4580-11-0x00000000052A0000-0x00000000052B0000-memory.dmp

Filesize
64KB

Download
memory/4580-12-0x0000000006960000-0x00000000069BA000-memory.dmp

Filesize
360KB

Download
memory/4580-7-0x0000000006820000-0x00000000068BC000-memory.dmp

Filesize
624KB

Download
memory/4580-6-0x0000000005170000-0x000000000517A000-memory.dmp

Filesize
40KB

Download
memory/4580-1-0x00000000750E0000-0x0000000075890000-memory.dmp

Filesize
7.7MB

Download
memory/4580-5-0x00000000051D0000-0x0000000005262000-memory.dmp

Filesize
584KB

Download
memory/4580-2-0x00000000052A0000-0x00000000052B0000-memory.dmp

Filesize
64KB

Download
memory/4580-19-0x00000000750E0000-0x0000000075890000-memory.dmp

Filesize
7.7MB

Download
memory/4580-3-0x00000000029F0000-0x00000000029F1000-memory.dmp

Filesize
4KB

Download
memory/4580-0-0x00000000005F0000-0x0000000000716000-memory.dmp

Filesize
1.1MB

Download