oski | 0c16b33ea06e3c929fdae5e8938d711779aa6a7b9a783edf40364c9cac06d003

General

Target

5cd0759c1e566b6e74ef3f29a49a34a08ded2dc44408fccd41b5a9845573a34c.exe
Size

680KB
MD5

bc7f80814ad63a035fbf8e0b67b02155
SHA1

a7d76dd02b12bb250f9f42101fda1fa235154710
SHA256

5cd0759c1e566b6e74ef3f29a49a34a08ded2dc44408fccd41b5a9845573a34c
SHA512

ac336b61ad93d51e68784350d59d56d08ac947426c3570ed7f0dfbbbdfce24bd0c495c6f626d3edeb8de47a0f0a3a09701b33b78dbb7a7a1e0b1cd32f8d0991a
SSDEEP

6144:nSiQrg69p5Ozn2zdCQ2I8EXAOteqM+Z4q6NHnfmDZET62KGUXtkJwov56hL:eBIzn2zd6EX6qM+Z4qufG6/PUyJw+A

Score

10^/10

oski credential_access discovery infostealer spyware stealer

Malware Config

Extracted

Family

oski

C2

himarkh.xyz

Signatures

Oski
Oski is an infostealer targeting browser data, crypto wallets.
infostealer oski
Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
credential_access stealer

Credentials from Web Browsers
T1555.003
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 1292 set thread context of 2156	1292	5cd0759c1e566b6e74ef3f29a49a34a08ded2dc44408fccd41b5a9845573a34c.exe	31

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2808	2156	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	5cd0759c1e566b6e74ef3f29a49a34a08ded2dc44408fccd41b5a9845573a34c.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	5cd0759c1e566b6e74ef3f29a49a34a08ded2dc44408fccd41b5a9845573a34c.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
1292	5cd0759c1e566b6e74ef3f29a49a34a08ded2dc44408fccd41b5a9845573a34c.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 1292 wrote to memory of 2156	1292	5cd0759c1e566b6e74ef3f29a49a34a08ded2dc44408fccd41b5a9845573a34c.exe	31
PID 1292 wrote to memory of 2156	1292	5cd0759c1e566b6e74ef3f29a49a34a08ded2dc44408fccd41b5a9845573a34c.exe	31
PID 1292 wrote to memory of 2156	1292	5cd0759c1e566b6e74ef3f29a49a34a08ded2dc44408fccd41b5a9845573a34c.exe	31
PID 1292 wrote to memory of 2156	1292	5cd0759c1e566b6e74ef3f29a49a34a08ded2dc44408fccd41b5a9845573a34c.exe	31
PID 1292 wrote to memory of 2156	1292	5cd0759c1e566b6e74ef3f29a49a34a08ded2dc44408fccd41b5a9845573a34c.exe	31
PID 2156 wrote to memory of 2808	2156	5cd0759c1e566b6e74ef3f29a49a34a08ded2dc44408fccd41b5a9845573a34c.exe	34
PID 2156 wrote to memory of 2808	2156	5cd0759c1e566b6e74ef3f29a49a34a08ded2dc44408fccd41b5a9845573a34c.exe	34
PID 2156 wrote to memory of 2808	2156	5cd0759c1e566b6e74ef3f29a49a34a08ded2dc44408fccd41b5a9845573a34c.exe	34
PID 2156 wrote to memory of 2808	2156	5cd0759c1e566b6e74ef3f29a49a34a08ded2dc44408fccd41b5a9845573a34c.exe	34

C:\Users\Admin\AppData\Local\Temp\5cd0759c1e566b6e74ef3f29a49a34a08ded2dc44408fccd41b5a9845573a34c.exe
"C:\Users\Admin\AppData\Local\Temp\5cd0759c1e566b6e74ef3f29a49a34a08ded2dc44408fccd41b5a9845573a34c.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:1292
- C:\Users\Admin\AppData\Local\Temp\5cd0759c1e566b6e74ef3f29a49a34a08ded2dc44408fccd41b5a9845573a34c.exe
  "C:\Users\Admin\AppData\Local\Temp\5cd0759c1e566b6e74ef3f29a49a34a08ded2dc44408fccd41b5a9845573a34c.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2156
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2156 -s 764
    3⤵
    - Program crash
    PID:2808

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1292-2-0x00000000001C0000-0x00000000001C2000-memory.dmp

Filesize
8KB

Download
memory/1292-1-0x0000000000090000-0x0000000000190000-memory.dmp

Filesize
1024KB

Download
memory/2156-3-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2156-5-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2156-6-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2156-7-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2156-9-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download

Analysis

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