oski | bbe006688e5f74473a5e248bc83651cbb7e9efbe8410abb8d8b84b4a59ed7750

Analysis

max time kernel
90s
max time network
158s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
01-02-2024 08:18

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General

Target

8663ed0caec9adcb980a4a7ea23e7984.exe
Size

1.3MB
MD5

8663ed0caec9adcb980a4a7ea23e7984
SHA1

e6dcb19362e88b50ab1990e7032437072f104e98
SHA256

bbe006688e5f74473a5e248bc83651cbb7e9efbe8410abb8d8b84b4a59ed7750
SHA512

fd75e6bde035e103e84322411ca7b4107f1673d03170b940af3066f9f4eb58b063ec244302c8dccab87f5816e2b55a177dc1c1d7f498742fd8e0f24fb64317a9
SSDEEP

24576:0+Mt76DOkfx8Dgyfx8DgYd6ph9Jxg6AQ9l3zIiLsLznD9IzlTwDZYLL:Ot76B58Dgy58DgYd6XbxglkDIiLsLzng

Score

10^/10

oski infostealer spyware stealer

Malware Config

Extracted

Family

oski

fine.le-pearl.com

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-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation	8663ed0caec9adcb980a4a7ea23e7984.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 2368 set thread context of 3808	2368	8663ed0caec9adcb980a4a7ea23e7984.exe	100

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
608	3808	WerFault.exe	100

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
4192	schtasks.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
3612	powershell.exe
388	powershell.exe
2368	8663ed0caec9adcb980a4a7ea23e7984.exe
2368	8663ed0caec9adcb980a4a7ea23e7984.exe
2368	8663ed0caec9adcb980a4a7ea23e7984.exe
4524	powershell.exe
3612	powershell.exe
388	powershell.exe
4524	powershell.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	3612	powershell.exe
Token: SeDebugPrivilege	388	powershell.exe
Token: SeDebugPrivilege	2368	8663ed0caec9adcb980a4a7ea23e7984.exe
Token: SeDebugPrivilege	4524	powershell.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 2368 wrote to memory of 3612	2368	8663ed0caec9adcb980a4a7ea23e7984.exe	92
PID 2368 wrote to memory of 3612	2368	8663ed0caec9adcb980a4a7ea23e7984.exe	92
PID 2368 wrote to memory of 3612	2368	8663ed0caec9adcb980a4a7ea23e7984.exe	92
PID 2368 wrote to memory of 388	2368	8663ed0caec9adcb980a4a7ea23e7984.exe	94
PID 2368 wrote to memory of 388	2368	8663ed0caec9adcb980a4a7ea23e7984.exe	94
PID 2368 wrote to memory of 388	2368	8663ed0caec9adcb980a4a7ea23e7984.exe	94
PID 2368 wrote to memory of 4192	2368	8663ed0caec9adcb980a4a7ea23e7984.exe	96
PID 2368 wrote to memory of 4192	2368	8663ed0caec9adcb980a4a7ea23e7984.exe	96
PID 2368 wrote to memory of 4192	2368	8663ed0caec9adcb980a4a7ea23e7984.exe	96
PID 2368 wrote to memory of 4524	2368	8663ed0caec9adcb980a4a7ea23e7984.exe	101
PID 2368 wrote to memory of 4524	2368	8663ed0caec9adcb980a4a7ea23e7984.exe	101
PID 2368 wrote to memory of 4524	2368	8663ed0caec9adcb980a4a7ea23e7984.exe	101
PID 2368 wrote to memory of 3576	2368	8663ed0caec9adcb980a4a7ea23e7984.exe	99
PID 2368 wrote to memory of 3576	2368	8663ed0caec9adcb980a4a7ea23e7984.exe	99
PID 2368 wrote to memory of 3576	2368	8663ed0caec9adcb980a4a7ea23e7984.exe	99
PID 2368 wrote to memory of 3808	2368	8663ed0caec9adcb980a4a7ea23e7984.exe	100
PID 2368 wrote to memory of 3808	2368	8663ed0caec9adcb980a4a7ea23e7984.exe	100
PID 2368 wrote to memory of 3808	2368	8663ed0caec9adcb980a4a7ea23e7984.exe	100
PID 2368 wrote to memory of 3808	2368	8663ed0caec9adcb980a4a7ea23e7984.exe	100
PID 2368 wrote to memory of 3808	2368	8663ed0caec9adcb980a4a7ea23e7984.exe	100
PID 2368 wrote to memory of 3808	2368	8663ed0caec9adcb980a4a7ea23e7984.exe	100
PID 2368 wrote to memory of 3808	2368	8663ed0caec9adcb980a4a7ea23e7984.exe	100
PID 2368 wrote to memory of 3808	2368	8663ed0caec9adcb980a4a7ea23e7984.exe	100
PID 2368 wrote to memory of 3808	2368	8663ed0caec9adcb980a4a7ea23e7984.exe	100

C:\Users\Admin\AppData\Local\Temp\8663ed0caec9adcb980a4a7ea23e7984.exe
"C:\Users\Admin\AppData\Local\Temp\8663ed0caec9adcb980a4a7ea23e7984.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2368
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\8663ed0caec9adcb980a4a7ea23e7984.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3612
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\ImauUieIe.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:388
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\ImauUieIe" /XML "C:\Users\Admin\AppData\Local\Temp\tmpF48.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:4192
- C:\Users\Admin\AppData\Local\Temp\8663ed0caec9adcb980a4a7ea23e7984.exe
  "C:\Users\Admin\AppData\Local\Temp\8663ed0caec9adcb980a4a7ea23e7984.exe"
  2⤵
  PID:3576
- C:\Users\Admin\AppData\Local\Temp\8663ed0caec9adcb980a4a7ea23e7984.exe
  "C:\Users\Admin\AppData\Local\Temp\8663ed0caec9adcb980a4a7ea23e7984.exe"
  2⤵
  PID:3808
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 3808 -s 1328
    3⤵
    - Program crash
    PID:608
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\ImauUieIe.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4524

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3808 -ip 3808
1⤵
PID:2452

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Persistence

Scheduled Task/Job

T1053

Privilege Escalation

Scheduled Task/Job

T1053

Defense Evasion

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log

Filesize
2KB

MD5
968cb9309758126772781b83adb8a28f

SHA1
8da30e71accf186b2ba11da1797cf67f8f78b47c

SHA256
92099c10776bb7e3f2a8d1b82d4d40d0c4627e4f1bf754a6e58dfd2c2e97042a

SHA512
4bd50732f8af4d688d95999bddfd296115d7033ddc38f86c9fb1f47fde202bffa27e9088bebcaa3064ca946af2f5c1ca6cbde49d0907f0005c7ab42874515dd3

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\Z0UNWU5J\suspendedpage[1].htm

Filesize
496B

MD5
1842eed13fddc700a50adada08a0f84d

SHA1
5e7b6997ffaf89afdb803de2e9231cd8886621ae

SHA256
47ac9eef48022403111f9cef6871af594079acdd88da83e7d2b2a92fa47f7368

SHA512
0d0086367e60782f81324abc5a79ae4c19aaa96aeb7aead23d4ca2dde0af5cc7cf3cc9b6e391b95405ed97a136fcd99af3f868a6027b89b5fcc47cff52272b1d

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
18KB

MD5
7b3838f4190c655faff2b16381db2da0

SHA1
07ef36fbf036addeb4e3efe56d9d31d68250da2a

SHA256
bd6ff03e889eb9055996414672e89cd161a76d929bcf8344c80307319c19cf67

SHA512
7a0196559971e9338c18931742ddb844313edc9550fc1e30fc17f6f851ed10008658b94d9c6e26423aa622fdbfd7c68917c65ce11d5750a7534a85f0c9f94e36

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_1jx5o5fh.fct.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpF48.tmp

Filesize
1KB

MD5
bfef3e0f4a9459d614280e57d66331fd

SHA1
82db44dbeb70eedbc3fad4a6b5b1a7aa45067f07

SHA256
aecc57f67936fe509d09e8c82743e056a3d2b0d20d3ab5cd39d9e654b525f4de

SHA512
6f2b0edce0c944760721e5cb6e636babf6ceed54cfa220e8afcebde01fb2c2c9ead37df97eaa102af7324b939a7a22dc4a5073903b4adbad2696aa211bebf55e

Download Submit
memory/388-132-0x0000000007070000-0x0000000007078000-memory.dmp

Filesize
32KB

Download
memory/388-23-0x0000000004530000-0x0000000004540000-memory.dmp

Filesize
64KB

Download
memory/388-142-0x0000000074B40000-0x00000000752F0000-memory.dmp

Filesize
7.7MB

Download
memory/388-87-0x000000007FD60000-0x000000007FD70000-memory.dmp

Filesize
64KB

Download
memory/388-90-0x0000000071330000-0x000000007137C000-memory.dmp

Filesize
304KB

Download
memory/388-27-0x0000000005380000-0x00000000053E6000-memory.dmp

Filesize
408KB

Download
memory/388-126-0x0000000006FD0000-0x0000000007066000-memory.dmp

Filesize
600KB

Download
memory/388-124-0x0000000006D50000-0x0000000006D6A000-memory.dmp

Filesize
104KB

Download
memory/388-131-0x0000000007090000-0x00000000070AA000-memory.dmp

Filesize
104KB

Download
memory/388-122-0x0000000006C60000-0x0000000006D03000-memory.dmp

Filesize
652KB

Download
memory/388-66-0x0000000005A60000-0x0000000005AAC000-memory.dmp

Filesize
304KB

Download
memory/388-21-0x0000000074B40000-0x00000000752F0000-memory.dmp

Filesize
7.7MB

Download
memory/388-22-0x0000000004530000-0x0000000004540000-memory.dmp

Filesize
64KB

Download
memory/388-26-0x00000000051A0000-0x0000000005206000-memory.dmp

Filesize
408KB

Download
memory/388-25-0x0000000004A30000-0x0000000004A52000-memory.dmp

Filesize
136KB

Download
memory/2368-10-0x0000000007BE0000-0x0000000007C80000-memory.dmp

Filesize
640KB

Download
memory/2368-7-0x00000000027F0000-0x0000000002802000-memory.dmp

Filesize
72KB

Download
memory/2368-11-0x0000000000830000-0x0000000000868000-memory.dmp

Filesize
224KB

Download
memory/2368-5-0x0000000004D70000-0x0000000004D7A000-memory.dmp

Filesize
40KB

Download
memory/2368-4-0x0000000005060000-0x0000000005070000-memory.dmp

Filesize
64KB

Download
memory/2368-3-0x0000000004D90000-0x0000000004E22000-memory.dmp

Filesize
584KB

Download
memory/2368-6-0x0000000005110000-0x00000000051AC000-memory.dmp

Filesize
624KB

Download
memory/2368-9-0x0000000005060000-0x0000000005070000-memory.dmp

Filesize
64KB

Download
memory/2368-2-0x0000000005430000-0x00000000059D4000-memory.dmp

Filesize
5.6MB

Download
memory/2368-52-0x0000000074B40000-0x00000000752F0000-memory.dmp

Filesize
7.7MB

Download
memory/2368-1-0x0000000000230000-0x0000000000382000-memory.dmp

Filesize
1.3MB

Download
memory/2368-0-0x0000000074B40000-0x00000000752F0000-memory.dmp

Filesize
7.7MB

Download
memory/2368-8-0x0000000074B40000-0x00000000752F0000-memory.dmp

Filesize
7.7MB

Download
memory/3612-16-0x0000000074B40000-0x00000000752F0000-memory.dmp

Filesize
7.7MB

Download
memory/3612-111-0x00000000065A0000-0x00000000065BE000-memory.dmp

Filesize
120KB

Download
memory/3612-141-0x0000000074B40000-0x00000000752F0000-memory.dmp

Filesize
7.7MB

Download
memory/3612-81-0x0000000004B50000-0x0000000004B60000-memory.dmp

Filesize
64KB

Download
memory/3612-51-0x00000000059B0000-0x0000000005D04000-memory.dmp

Filesize
3.3MB

Download
memory/3612-86-0x0000000074B40000-0x00000000752F0000-memory.dmp

Filesize
7.7MB

Download
memory/3612-14-0x00000000049F0000-0x0000000004A26000-memory.dmp

Filesize
216KB

Download
memory/3612-129-0x0000000007530000-0x000000000753E000-memory.dmp

Filesize
56KB

Download
memory/3612-110-0x000000007FA30000-0x000000007FA40000-memory.dmp

Filesize
64KB

Download
memory/3612-65-0x0000000004D40000-0x0000000004D5E000-memory.dmp

Filesize
120KB

Download
memory/3612-17-0x0000000004B50000-0x0000000004B60000-memory.dmp

Filesize
64KB

Download
memory/3612-19-0x0000000004B50000-0x0000000004B60000-memory.dmp

Filesize
64KB

Download
memory/3612-89-0x0000000071330000-0x000000007137C000-memory.dmp

Filesize
304KB

Download
memory/3612-20-0x0000000005190000-0x00000000057B8000-memory.dmp

Filesize
6.2MB

Download
memory/3808-28-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3808-29-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3808-128-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3808-41-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3808-42-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4524-54-0x00000000055D0000-0x00000000055E0000-memory.dmp

Filesize
64KB

Download
memory/4524-127-0x0000000007E20000-0x0000000007E31000-memory.dmp

Filesize
68KB

Download
memory/4524-125-0x0000000007C90000-0x0000000007C9A000-memory.dmp

Filesize
40KB

Download
memory/4524-130-0x0000000007E60000-0x0000000007E74000-memory.dmp

Filesize
80KB

Download
memory/4524-123-0x0000000008270000-0x00000000088EA000-memory.dmp

Filesize
6.5MB

Download
memory/4524-88-0x0000000006ED0000-0x0000000006F02000-memory.dmp

Filesize
200KB

Download
memory/4524-91-0x000000007F8B0000-0x000000007F8C0000-memory.dmp

Filesize
64KB

Download
memory/4524-92-0x0000000071330000-0x000000007137C000-memory.dmp

Filesize
304KB

Download
memory/4524-84-0x00000000055D0000-0x00000000055E0000-memory.dmp

Filesize
64KB

Download
memory/4524-140-0x0000000074B40000-0x00000000752F0000-memory.dmp

Filesize
7.7MB

Download
memory/4524-55-0x00000000055D0000-0x00000000055E0000-memory.dmp

Filesize
64KB

Download
memory/4524-53-0x0000000074B40000-0x00000000752F0000-memory.dmp

Filesize
7.7MB

Download