oski | 8e07cf5e12ed70918b410fdb95fdf6905c191df169df5fdf994daac99c8bd359

General

Target

406171ecbe8c3d96852acef91ec2e6db.exe
Size

571KB
MD5

406171ecbe8c3d96852acef91ec2e6db
SHA1

5fb7a4fc46659b510fbcbb51d9e08bdf08490b62
SHA256

8e07cf5e12ed70918b410fdb95fdf6905c191df169df5fdf994daac99c8bd359
SHA512

d0c472148ded74e627d33f1f1124b9275ba8ab9d2cb1443a88ebfecce57755b7e88d39e77819bbba75dad6cf905ba85e5372ca9341790f56e121263ababf10a3
SSDEEP

12288:B5tM+E02iNv4sxxrMAbU3Sg9r28R1g9lHQI0uS:vbE01usjMMuSg96WIjV

Score

10^/10

oski infostealer

Malware Config

Extracted

Family

oski

C2

fair.le-pearl.com

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 1484 set thread context of 2976	1484	406171ecbe8c3d96852acef91ec2e6db.exe	32

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
1876	2976	WerFault.exe	32

Creates scheduled task(s) 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task/Job

T1053

pid	Process
2652	schtasks.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1484	406171ecbe8c3d96852acef91ec2e6db.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1484	406171ecbe8c3d96852acef91ec2e6db.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 1484 wrote to memory of 2652	1484	406171ecbe8c3d96852acef91ec2e6db.exe	30
PID 1484 wrote to memory of 2652	1484	406171ecbe8c3d96852acef91ec2e6db.exe	30
PID 1484 wrote to memory of 2652	1484	406171ecbe8c3d96852acef91ec2e6db.exe	30
PID 1484 wrote to memory of 2652	1484	406171ecbe8c3d96852acef91ec2e6db.exe	30
PID 1484 wrote to memory of 2976	1484	406171ecbe8c3d96852acef91ec2e6db.exe	32
PID 1484 wrote to memory of 2976	1484	406171ecbe8c3d96852acef91ec2e6db.exe	32
PID 1484 wrote to memory of 2976	1484	406171ecbe8c3d96852acef91ec2e6db.exe	32
PID 1484 wrote to memory of 2976	1484	406171ecbe8c3d96852acef91ec2e6db.exe	32
PID 1484 wrote to memory of 2976	1484	406171ecbe8c3d96852acef91ec2e6db.exe	32
PID 1484 wrote to memory of 2976	1484	406171ecbe8c3d96852acef91ec2e6db.exe	32
PID 1484 wrote to memory of 2976	1484	406171ecbe8c3d96852acef91ec2e6db.exe	32
PID 1484 wrote to memory of 2976	1484	406171ecbe8c3d96852acef91ec2e6db.exe	32
PID 1484 wrote to memory of 2976	1484	406171ecbe8c3d96852acef91ec2e6db.exe	32
PID 1484 wrote to memory of 2976	1484	406171ecbe8c3d96852acef91ec2e6db.exe	32

C:\Users\Admin\AppData\Local\Temp\406171ecbe8c3d96852acef91ec2e6db.exe
"C:\Users\Admin\AppData\Local\Temp\406171ecbe8c3d96852acef91ec2e6db.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1484
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\YmTlkQcO" /XML "C:\Users\Admin\AppData\Local\Temp\tmp401C.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:2652
- C:\Users\Admin\AppData\Local\Temp\406171ecbe8c3d96852acef91ec2e6db.exe
  "{path}"
  2⤵
  PID:2976
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2976 -s 112
    3⤵
    - Program crash
    PID:1876

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Persistence

Scheduled Task/Job

1

T1053

Privilege Escalation

Scheduled Task/Job

1

T1053

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp401C.tmp

Filesize
1KB

MD5
c374d8f7c21ab111d99d766c52df40b9

SHA1
d4969daf82dee523d284cd18b58ffe3a8bdcc036

SHA256
e9c552ea1a6a830b82ad0987f0004d88b636138a6cfc9b3b151afc618c538844

SHA512
3149cbb975e1aab1ead2387bd56de64e3b8db8722f749050e9aa307ec3207d1416e6a2f1fccaa49d82fd741385d55b025c3067c0e9eaf94d04f47889c750e8b3

Download Submit
memory/1484-4-0x0000000074D10000-0x00000000753FE000-memory.dmp

Filesize
6.9MB

Download
memory/1484-5-0x0000000004C50000-0x0000000004C90000-memory.dmp

Filesize
256KB

Download
memory/1484-22-0x0000000074D10000-0x00000000753FE000-memory.dmp

Filesize
6.9MB

Download
memory/1484-0-0x0000000000820000-0x00000000008B6000-memory.dmp

Filesize
600KB

Download
memory/1484-1-0x0000000074D10000-0x00000000753FE000-memory.dmp

Filesize
6.9MB

Download
memory/1484-6-0x0000000005BC0000-0x0000000005C3A000-memory.dmp

Filesize
488KB

Download
memory/1484-7-0x0000000001FA0000-0x0000000001FD8000-memory.dmp

Filesize
224KB

Download
memory/1484-2-0x0000000004C50000-0x0000000004C90000-memory.dmp

Filesize
256KB

Download
memory/1484-3-0x00000000004E0000-0x00000000004E8000-memory.dmp

Filesize
32KB

Download
memory/2976-17-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2976-19-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2976-16-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2976-12-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2976-21-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2976-14-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2976-13-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2976-11-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads