oski | 42c682af79cf1b73127ebf00349a8c4cabccdf42d2e14f77cda67121f870d8bf

General

Target

03972c7f3b0df942d4e0a1e11956e523.exe
Size

884KB
MD5

03972c7f3b0df942d4e0a1e11956e523
SHA1

55675cc5594b4731ab268fa2e1ff35df892de7df
SHA256

42c682af79cf1b73127ebf00349a8c4cabccdf42d2e14f77cda67121f870d8bf
SHA512

2d3b1865a41cbf9d6d909d481e7275ff0adda1b8a404b1015e9ff74c943509cdd490ebb5252301609f12f75c392275bc382b21d9044c86d0aef394c937b43ca1
SSDEEP

12288:PdjGXt2ghPHK7zt4QKvq7Mlax3UAXynyGPl+U8av4ORx:VGXt2g4R3Kvsl3XOd8LC

Score

10^/10

oski infostealer spyware stealer

Malware Config

Extracted

Family

oski

C2

soitaab.co/make/

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-1-5-21-996941297-2279405024-2328152752-1000\Control Panel\International\Geo\Nation	03972c7f3b0df942d4e0a1e11956e523.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
T1552.001

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4324 set thread context of 1884	4324	03972c7f3b0df942d4e0a1e11956e523.exe	109

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
1576	1884	WerFault.exe	109

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
1184	schtasks.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 4324 wrote to memory of 1184	4324	03972c7f3b0df942d4e0a1e11956e523.exe	107
PID 4324 wrote to memory of 1184	4324	03972c7f3b0df942d4e0a1e11956e523.exe	107
PID 4324 wrote to memory of 1184	4324	03972c7f3b0df942d4e0a1e11956e523.exe	107
PID 4324 wrote to memory of 1884	4324	03972c7f3b0df942d4e0a1e11956e523.exe	109
PID 4324 wrote to memory of 1884	4324	03972c7f3b0df942d4e0a1e11956e523.exe	109
PID 4324 wrote to memory of 1884	4324	03972c7f3b0df942d4e0a1e11956e523.exe	109
PID 4324 wrote to memory of 1884	4324	03972c7f3b0df942d4e0a1e11956e523.exe	109
PID 4324 wrote to memory of 1884	4324	03972c7f3b0df942d4e0a1e11956e523.exe	109
PID 4324 wrote to memory of 1884	4324	03972c7f3b0df942d4e0a1e11956e523.exe	109
PID 4324 wrote to memory of 1884	4324	03972c7f3b0df942d4e0a1e11956e523.exe	109
PID 4324 wrote to memory of 1884	4324	03972c7f3b0df942d4e0a1e11956e523.exe	109
PID 4324 wrote to memory of 1884	4324	03972c7f3b0df942d4e0a1e11956e523.exe	109

C:\Users\Admin\AppData\Local\Temp\03972c7f3b0df942d4e0a1e11956e523.exe
"C:\Users\Admin\AppData\Local\Temp\03972c7f3b0df942d4e0a1e11956e523.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4324
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\pxOIUAzyZ" /XML "C:\Users\Admin\AppData\Local\Temp\tmpE1.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:1184
- C:\Users\Admin\AppData\Local\Temp\03972c7f3b0df942d4e0a1e11956e523.exe
  "C:\Users\Admin\AppData\Local\Temp\03972c7f3b0df942d4e0a1e11956e523.exe"
  2⤵
  PID:1884
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1884 -s 1264
    3⤵
    - Program crash
    PID:1576

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 1884 -ip 1884
1⤵
PID:1308

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

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpE1.tmp

Filesize
1KB

MD5
09ee1754cae590126d8f4bd12a8fc777

SHA1
a3b299fd9b9632b2a36ae128d5de0d96e8e6c8c6

SHA256
9b29532156d4900b31a02af0dda053c682c9f15963609253f763d466c38b9e63

SHA512
9412a5a9a0b11d3acd98d8fdfd3c7985731dd163206b1e052219f7f70e5288d837626e39a9e870639b6b22f97ebb8b45abda43054a4e4a1c2d0a1b454213b60c

Download Submit
memory/1884-26-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1884-23-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1884-21-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1884-19-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1884-18-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4324-5-0x0000000005450000-0x0000000005460000-memory.dmp

Filesize
64KB

Download
memory/4324-6-0x0000000005240000-0x000000000524A000-memory.dmp

Filesize
40KB

Download
memory/4324-8-0x0000000006630000-0x0000000006646000-memory.dmp

Filesize
88KB

Download
memory/4324-9-0x00000000746A0000-0x0000000074E50000-memory.dmp

Filesize
7.7MB

Download
memory/4324-10-0x0000000005450000-0x0000000005460000-memory.dmp

Filesize
64KB

Download
memory/4324-11-0x0000000000FB0000-0x0000000001054000-memory.dmp

Filesize
656KB

Download
memory/4324-12-0x0000000000DA0000-0x0000000000DD8000-memory.dmp

Filesize
224KB

Download
memory/4324-7-0x0000000005570000-0x00000000055C6000-memory.dmp

Filesize
344KB

Download
memory/4324-0-0x00000000746A0000-0x0000000074E50000-memory.dmp

Filesize
7.7MB

Download
memory/4324-4-0x0000000005310000-0x00000000053A2000-memory.dmp

Filesize
584KB

Download
memory/4324-3-0x00000000058C0000-0x0000000005E64000-memory.dmp

Filesize
5.6MB

Download
memory/4324-22-0x00000000746A0000-0x0000000074E50000-memory.dmp

Filesize
7.7MB

Download
memory/4324-2-0x0000000005270000-0x000000000530C000-memory.dmp

Filesize
624KB

Download
memory/4324-1-0x0000000000760000-0x0000000000844000-memory.dmp

Filesize
912KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads