oski | dd01ca4b5bfbe8ef00d23fd0c1227d58e7d6169a89e3f1ae9bbb4fbae46bfe21

General

Target

b146860b83e4b59ffb07dbbdff9b8e6d.exe
Size

693KB
MD5

b146860b83e4b59ffb07dbbdff9b8e6d
SHA1

06031a3261528c023af96b026e3f24589a46038c
SHA256

dd01ca4b5bfbe8ef00d23fd0c1227d58e7d6169a89e3f1ae9bbb4fbae46bfe21
SHA512

8e1c3a529fe9aa5364c07e97f0e7853384a3b4b22e5ffe4c374aff78c1352c4e05197d16e41ee3aef96ac0a83879e3f2f8fe721458baa2b292ed3f7e9cb60f45
SSDEEP

12288:jVzd4RiawLwA2ligMb9pxEC5HsabLBd4bfTp6MQNSKUnqAUGobngxaRYP:jpqRiawLGiV9pxHGavbUfIxY

Score

10^/10

oski infostealer

Malware Config

Extracted

Family

oski

C2

zbd.divendesign.in

Signatures

Oski
Oski is an infostealer targeting browser data, crypto wallets.
infostealer oski
Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1300 set thread context of 2640	1300	b146860b83e4b59ffb07dbbdff9b8e6d.exe	30

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
2496	2640	WerFault.exe	30

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
2660	schtasks.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1300	b146860b83e4b59ffb07dbbdff9b8e6d.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1300	b146860b83e4b59ffb07dbbdff9b8e6d.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 1300 wrote to memory of 2660	1300	b146860b83e4b59ffb07dbbdff9b8e6d.exe	28
PID 1300 wrote to memory of 2660	1300	b146860b83e4b59ffb07dbbdff9b8e6d.exe	28
PID 1300 wrote to memory of 2660	1300	b146860b83e4b59ffb07dbbdff9b8e6d.exe	28
PID 1300 wrote to memory of 2660	1300	b146860b83e4b59ffb07dbbdff9b8e6d.exe	28
PID 1300 wrote to memory of 2640	1300	b146860b83e4b59ffb07dbbdff9b8e6d.exe	30
PID 1300 wrote to memory of 2640	1300	b146860b83e4b59ffb07dbbdff9b8e6d.exe	30
PID 1300 wrote to memory of 2640	1300	b146860b83e4b59ffb07dbbdff9b8e6d.exe	30
PID 1300 wrote to memory of 2640	1300	b146860b83e4b59ffb07dbbdff9b8e6d.exe	30
PID 1300 wrote to memory of 2640	1300	b146860b83e4b59ffb07dbbdff9b8e6d.exe	30
PID 1300 wrote to memory of 2640	1300	b146860b83e4b59ffb07dbbdff9b8e6d.exe	30
PID 1300 wrote to memory of 2640	1300	b146860b83e4b59ffb07dbbdff9b8e6d.exe	30
PID 1300 wrote to memory of 2640	1300	b146860b83e4b59ffb07dbbdff9b8e6d.exe	30
PID 1300 wrote to memory of 2640	1300	b146860b83e4b59ffb07dbbdff9b8e6d.exe	30
PID 1300 wrote to memory of 2640	1300	b146860b83e4b59ffb07dbbdff9b8e6d.exe	30
PID 2640 wrote to memory of 2496	2640	vbc.exe	31
PID 2640 wrote to memory of 2496	2640	vbc.exe	31
PID 2640 wrote to memory of 2496	2640	vbc.exe	31
PID 2640 wrote to memory of 2496	2640	vbc.exe	31

C:\Users\Admin\AppData\Local\Temp\b146860b83e4b59ffb07dbbdff9b8e6d.exe
"C:\Users\Admin\AppData\Local\Temp\b146860b83e4b59ffb07dbbdff9b8e6d.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1300
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\nCSSNRmkLpV" /XML "C:\Users\Admin\AppData\Local\Temp\tmpC227.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:2660
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
  "{path}"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2640
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2640 -s 112
    3⤵
    - Program crash
    PID:2496

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

Scripting

Persistence

Scheduled Task/Job

1

T1053

Privilege Escalation

Scheduled Task/Job

1

T1053

Defense Evasion

Scripting

1

T1064

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\tmpC227.tmp

Filesize
1KB

MD5
65c4aaf36fa740c55e0bce0c04de99bf

SHA1
4bef453638098bbdae111cd05a270c7b71ce384e

SHA256
5ea3661400375db99c4288fa22efbd217b525845f31c7552b4c940e86509f73a

SHA512
1d6b05e4947123bf4f95a1c2479ee013a45cba9b816c966a2028ee551ea1b033672b42ec225518e9384e34c42ef35928af07f7820293148dbef91b32f8bc0b15

Download Submit
memory/1300-4-0x0000000074D30000-0x000000007541E000-memory.dmp

Filesize
6.9MB

Download
memory/1300-5-0x0000000004CF0000-0x0000000004D30000-memory.dmp

Filesize
256KB

Download
memory/1300-20-0x0000000074D30000-0x000000007541E000-memory.dmp

Filesize
6.9MB

Download
memory/1300-0-0x0000000001070000-0x0000000001124000-memory.dmp

Filesize
720KB

Download
memory/1300-1-0x0000000074D30000-0x000000007541E000-memory.dmp

Filesize
6.9MB

Download
memory/1300-6-0x0000000005F00000-0x0000000005F86000-memory.dmp

Filesize
536KB

Download
memory/1300-7-0x0000000000AB0000-0x0000000000AEA000-memory.dmp

Filesize
232KB

Download
memory/1300-2-0x0000000004CF0000-0x0000000004D30000-memory.dmp

Filesize
256KB

Download
memory/1300-3-0x0000000000710000-0x0000000000718000-memory.dmp

Filesize
32KB

Download
memory/2640-13-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2640-12-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2640-14-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2640-16-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2640-17-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

Filesize
4KB

Download
memory/2640-18-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2640-11-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2640-21-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads