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

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-1-5-21-513485977-2495024337-1260977654-1000\Control Panel\International\Geo\Nation	b146860b83e4b59ffb07dbbdff9b8e6d.exe

Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3612 set thread context of 2196	3612	b146860b83e4b59ffb07dbbdff9b8e6d.exe	99

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
2620	2196	WerFault.exe	99

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
1904	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
3612	b146860b83e4b59ffb07dbbdff9b8e6d.exe
3612	b146860b83e4b59ffb07dbbdff9b8e6d.exe
3612	b146860b83e4b59ffb07dbbdff9b8e6d.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3612	b146860b83e4b59ffb07dbbdff9b8e6d.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 3612 wrote to memory of 1904	3612	b146860b83e4b59ffb07dbbdff9b8e6d.exe	96
PID 3612 wrote to memory of 1904	3612	b146860b83e4b59ffb07dbbdff9b8e6d.exe	96
PID 3612 wrote to memory of 1904	3612	b146860b83e4b59ffb07dbbdff9b8e6d.exe	96
PID 3612 wrote to memory of 3164	3612	b146860b83e4b59ffb07dbbdff9b8e6d.exe	98
PID 3612 wrote to memory of 3164	3612	b146860b83e4b59ffb07dbbdff9b8e6d.exe	98
PID 3612 wrote to memory of 3164	3612	b146860b83e4b59ffb07dbbdff9b8e6d.exe	98
PID 3612 wrote to memory of 2196	3612	b146860b83e4b59ffb07dbbdff9b8e6d.exe	99
PID 3612 wrote to memory of 2196	3612	b146860b83e4b59ffb07dbbdff9b8e6d.exe	99
PID 3612 wrote to memory of 2196	3612	b146860b83e4b59ffb07dbbdff9b8e6d.exe	99
PID 3612 wrote to memory of 2196	3612	b146860b83e4b59ffb07dbbdff9b8e6d.exe	99
PID 3612 wrote to memory of 2196	3612	b146860b83e4b59ffb07dbbdff9b8e6d.exe	99
PID 3612 wrote to memory of 2196	3612	b146860b83e4b59ffb07dbbdff9b8e6d.exe	99
PID 3612 wrote to memory of 2196	3612	b146860b83e4b59ffb07dbbdff9b8e6d.exe	99
PID 3612 wrote to memory of 2196	3612	b146860b83e4b59ffb07dbbdff9b8e6d.exe	99
PID 3612 wrote to memory of 2196	3612	b146860b83e4b59ffb07dbbdff9b8e6d.exe	99

C:\Users\Admin\AppData\Local\Temp\b146860b83e4b59ffb07dbbdff9b8e6d.exe
"C:\Users\Admin\AppData\Local\Temp\b146860b83e4b59ffb07dbbdff9b8e6d.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3612
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\nCSSNRmkLpV" /XML "C:\Users\Admin\AppData\Local\Temp\tmpF9C1.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:1904
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
  "{path}"
  2⤵
  PID:3164
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
  "{path}"
  2⤵
  PID:2196
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2196 -s 1300
    3⤵
    - Program crash
    PID:2620

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 2196 -ip 2196
1⤵
PID:4880

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

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpF9C1.tmp

Filesize
1KB

MD5
5974e67cb41ddc1d31aa9fb051d5755c

SHA1
0e507cc82d88b9590cec645c52e65ef9329c3a4d

SHA256
15e75ffbd3a9891ca88a1c6308f01ec9d52e5280e29035eee81c2f750a0e11c2

SHA512
41d70a24c1afe788d189bb56718e5dbc15f8e562af4cbaccba89cfbc55cbe99f2a73e3e44cfba9079c716b120cc34fcd14946570dcf68abd2c2ed558df326ecd

Download Submit
memory/2196-23-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2196-20-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2196-18-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2196-17-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2196-15-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3612-4-0x00000000056B0000-0x00000000056C0000-memory.dmp

Filesize
64KB

Download
memory/3612-7-0x00000000069D0000-0x0000000006A6C000-memory.dmp

Filesize
624KB

Download
memory/3612-8-0x0000000074BE0000-0x0000000075390000-memory.dmp

Filesize
7.7MB

Download
memory/3612-9-0x00000000056B0000-0x00000000056C0000-memory.dmp

Filesize
64KB

Download
memory/3612-10-0x0000000009780000-0x0000000009806000-memory.dmp

Filesize
536KB

Download
memory/3612-11-0x000000000BE60000-0x000000000BE9A000-memory.dmp

Filesize
232KB

Download
memory/3612-6-0x0000000005AE0000-0x0000000005AE8000-memory.dmp

Filesize
32KB

Download
memory/3612-5-0x0000000005660000-0x000000000566A000-memory.dmp

Filesize
40KB

Download
memory/3612-0-0x0000000074BE0000-0x0000000075390000-memory.dmp

Filesize
7.7MB

Download
memory/3612-3-0x00000000056D0000-0x0000000005762000-memory.dmp

Filesize
584KB

Download
memory/3612-19-0x0000000074BE0000-0x0000000075390000-memory.dmp

Filesize
7.7MB

Download
memory/3612-2-0x0000000005C80000-0x0000000006224000-memory.dmp

Filesize
5.6MB

Download
memory/3612-1-0x0000000000BA0000-0x0000000000C54000-memory.dmp

Filesize
720KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads