oski | 2213c9b915e45237c418089f12469a32144e7bd18bb1a79ada1f45b861d56518

General

Target

Sample_price list_new order.exe
Size

643KB
MD5

d5ad3655ac02936e060e384f1078c7f5
SHA1

39448e2ba7f287ecf60f95589072ddcf7cdc0369
SHA256

2213c9b915e45237c418089f12469a32144e7bd18bb1a79ada1f45b861d56518
SHA512

c36d8376276a964ea818df17c9233fa75745de84d33ddd6d0e21260acd760980f106fa747f6d51d3623e1b4c329e10e48fabff8bcd97fbba57ad348bf3ccde93

Score

10^/10

oski infostealer spyware stealer

Malware Config

Extracted

Family

oski

C2

masterwork2.co.vu

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

Processes:

Sample_price list_new order.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Control Panel\International\Geo\Nation	Sample_price list_new order.exe

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
T1081
Suspicious use of SetThreadContext 1 IoCs

Processes:

Sample_price list_new order.exe

description pid process target process

PID 1600 set thread context of 684 1600 Sample_price list_new order.exe Sample_price list_new order.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

4008 684 WerFault.exe Sample_price list_new order.exe
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
T1053

Processes:

schtasks.exe

pid process

1516 schtasks.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

powershell.exe

pid process

1088 powershell.exe
1088 powershell.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

powershell.exe

description pid process

Token: SeDebugPrivilege 1088 powershell.exe

description	pid	process	target process
PID 1600 set thread context of 684	1600	Sample_price list_new order.exe	Sample_price list_new order.exe

pid	pid_target	process	target process
4008	684	WerFault.exe	Sample_price list_new order.exe

pid	process
1516	schtasks.exe

pid	process
1088	powershell.exe
1088	powershell.exe

description	pid	process
Token: SeDebugPrivilege	1088	powershell.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

Sample_price list_new order.exe

C:\Users\Admin\AppData\Local\Temp\Sample_price list_new order.exe
"C:\Users\Admin\AppData\Local\Temp\Sample_price list_new order.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1600

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\mloRUbz.exe"
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1088

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\mloRUbz" /XML "C:\Users\Admin\AppData\Local\Temp\tmp1C2E.tmp"
2⤵
- Creates scheduled task(s)
PID:1516

C:\Users\Admin\AppData\Local\Temp\Sample_price list_new order.exe
"C:\Users\Admin\AppData\Local\Temp\Sample_price list_new order.exe"
2⤵
PID:684

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 684 -s 1292
3⤵
- Program crash
PID:4008

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 684 -ip 684
1⤵
PID:3252

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Credential Access

Credentials in Files

1

T1081

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Data from Local System

1

T1005

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp1C2E.tmp
Filesize
1KB

MD5
7b07167e4c03c5d5c82f5186e842cc3e

SHA1
3c92799e1d8a2c1afd40a2dc5c71d726e6582ee2

SHA256
375db0ec936ea0f7073e62bbed8490d988f0fa0717fd44f695d2e089af71bb1c

SHA512
377e5368cf605a0d745b54b5603cda25d416110d1652c6686ff6ca0b8487256f9dc37cd6cbdd96c801bdf5c022e37a52aa02e7cf03739d4609bc0cb4d4dc490e

Download Submit
memory/684-157-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/684-148-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/684-146-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/684-144-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/684-142-0x0000000000000000-mapping.dmp

Download
memory/684-143-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1088-152-0x0000000006A90000-0x0000000006AAE000-memory.dmp

Filesize
120KB

Download
memory/1088-154-0x00000000077F0000-0x000000000780A000-memory.dmp

Filesize
104KB

Download
memory/1088-160-0x0000000007B10000-0x0000000007B18000-memory.dmp

Filesize
32KB

Download
memory/1088-141-0x0000000005880000-0x0000000005EA8000-memory.dmp

Filesize
6.2MB

Download
memory/1088-137-0x0000000000000000-mapping.dmp

Download
memory/1088-159-0x0000000007B30000-0x0000000007B4A000-memory.dmp

Filesize
104KB

Download
memory/1088-158-0x0000000007A20000-0x0000000007A2E000-memory.dmp

Filesize
56KB

Download
memory/1088-156-0x0000000007A70000-0x0000000007B06000-memory.dmp

Filesize
600KB

Download
memory/1088-147-0x0000000005550000-0x00000000055B6000-memory.dmp

Filesize
408KB

Download
memory/1088-145-0x00000000053A0000-0x00000000053C2000-memory.dmp

Filesize
136KB

Download
memory/1088-155-0x0000000007860000-0x000000000786A000-memory.dmp

Filesize
40KB

Download
memory/1088-149-0x00000000064F0000-0x000000000650E000-memory.dmp

Filesize
120KB

Download
memory/1088-150-0x0000000006AB0000-0x0000000006AE2000-memory.dmp

Filesize
200KB

Download
memory/1088-151-0x0000000070DE0000-0x0000000070E2C000-memory.dmp

Filesize
304KB

Download
memory/1088-139-0x0000000002B30000-0x0000000002B66000-memory.dmp

Filesize
216KB

Download
memory/1088-153-0x0000000007E40000-0x00000000084BA000-memory.dmp

Filesize
6.5MB

Download
memory/1516-138-0x0000000000000000-mapping.dmp

Download
memory/1600-131-0x0000000000350000-0x00000000003F8000-memory.dmp

Filesize
672KB

Download
memory/1600-133-0x0000000004D80000-0x0000000004E12000-memory.dmp

Filesize
584KB

Download
memory/1600-134-0x0000000004E40000-0x0000000004E4A000-memory.dmp

Filesize
40KB

Download
memory/1600-132-0x0000000005490000-0x0000000005A34000-memory.dmp

Filesize
5.6MB

Download
memory/1600-135-0x0000000007350000-0x00000000073EC000-memory.dmp

Filesize
624KB

Download
memory/1600-136-0x0000000007980000-0x00000000079E6000-memory.dmp

Filesize
408KB

Download

description	pid	process	target process
PID 1600 wrote to memory of 1088	1600	Sample_price list_new order.exe	powershell.exe
PID 1600 wrote to memory of 1088	1600	Sample_price list_new order.exe	powershell.exe
PID 1600 wrote to memory of 1088	1600	Sample_price list_new order.exe	powershell.exe
PID 1600 wrote to memory of 1516	1600	Sample_price list_new order.exe	schtasks.exe
PID 1600 wrote to memory of 1516	1600	Sample_price list_new order.exe	schtasks.exe
PID 1600 wrote to memory of 1516	1600	Sample_price list_new order.exe	schtasks.exe
PID 1600 wrote to memory of 684	1600	Sample_price list_new order.exe	Sample_price list_new order.exe
PID 1600 wrote to memory of 684	1600	Sample_price list_new order.exe	Sample_price list_new order.exe
PID 1600 wrote to memory of 684	1600	Sample_price list_new order.exe	Sample_price list_new order.exe
PID 1600 wrote to memory of 684	1600	Sample_price list_new order.exe	Sample_price list_new order.exe
PID 1600 wrote to memory of 684	1600	Sample_price list_new order.exe	Sample_price list_new order.exe
PID 1600 wrote to memory of 684	1600	Sample_price list_new order.exe	Sample_price list_new order.exe
PID 1600 wrote to memory of 684	1600	Sample_price list_new order.exe	Sample_price list_new order.exe
PID 1600 wrote to memory of 684	1600	Sample_price list_new order.exe	Sample_price list_new order.exe
PID 1600 wrote to memory of 684	1600	Sample_price list_new order.exe	Sample_price list_new order.exe

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads