oski | a03b45dabcaf812402454befd876b2eafbdf9e967f3bb01e66f33f3cabbdebd5

General

Target

807a927252237ee6436724cbbcd05fa0_JaffaCakes118.exe
Size

732KB
MD5

807a927252237ee6436724cbbcd05fa0
SHA1

2344ad154e7d098704278cd5e28fccd29a9dec15
SHA256

a03b45dabcaf812402454befd876b2eafbdf9e967f3bb01e66f33f3cabbdebd5
SHA512

7f0bba03bd838900569e63bdab43e7caa3a1ab2d6744fcb9c38e7ca8914fcf31323b3db5d1ed2efdef1b5b5326f980c8712faef53ca6966c42318b20fd4bd541
SSDEEP

12288:SPqqPtYaerpyXOSs1vJhzl7txF3gSEyI32u6Yaer:wMrpW6vfl7hpE7mmr

Score

10^/10

oski discovery infostealer spyware stealer

Malware Config

Extracted

Family

oski

C2

zau.divendesign.in

Signatures

Oski
Oski is an infostealer targeting browser data, crypto wallets.
infostealer oski
Oski family
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:

807a927252237ee6436724cbbcd05fa0_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation	807a927252237ee6436724cbbcd05fa0_JaffaCakes118.exe

Reads user/profile data of web browsers 3 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

Credentials from Web Browsers
T1555.003

Suspicious use of SetThreadContext 1 IoCs

Processes:

807a927252237ee6436724cbbcd05fa0_JaffaCakes118.exe

description	pid	process	target process
PID 4360 set thread context of 2584	4360	807a927252237ee6436724cbbcd05fa0_JaffaCakes118.exe	807a927252237ee6436724cbbcd05fa0_JaffaCakes118.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

972 2584 WerFault.exe 807a927252237ee6436724cbbcd05fa0_JaffaCakes118.exe

pid	pid_target	process	target process
972	2584	WerFault.exe	807a927252237ee6436724cbbcd05fa0_JaffaCakes118.exe

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

Processes:

807a927252237ee6436724cbbcd05fa0_JaffaCakes118.exeschtasks.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	807a927252237ee6436724cbbcd05fa0_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence execution

Scheduled Task
T1053.005

Processes:

schtasks.exe

pid process

756 schtasks.exe
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

807a927252237ee6436724cbbcd05fa0_JaffaCakes118.exe

pid process

4360 807a927252237ee6436724cbbcd05fa0_JaffaCakes118.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

807a927252237ee6436724cbbcd05fa0_JaffaCakes118.exe

description pid process

Token: SeDebugPrivilege 4360 807a927252237ee6436724cbbcd05fa0_JaffaCakes118.exe

pid	process
756	schtasks.exe

pid	process
4360	807a927252237ee6436724cbbcd05fa0_JaffaCakes118.exe

description	pid	process
Token: SeDebugPrivilege	4360	807a927252237ee6436724cbbcd05fa0_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

807a927252237ee6436724cbbcd05fa0_JaffaCakes118.exe

description	pid	process	target process
PID 4360 wrote to memory of 756	4360	807a927252237ee6436724cbbcd05fa0_JaffaCakes118.exe	schtasks.exe
PID 4360 wrote to memory of 756	4360	807a927252237ee6436724cbbcd05fa0_JaffaCakes118.exe	schtasks.exe
PID 4360 wrote to memory of 756	4360	807a927252237ee6436724cbbcd05fa0_JaffaCakes118.exe	schtasks.exe
PID 4360 wrote to memory of 2584	4360	807a927252237ee6436724cbbcd05fa0_JaffaCakes118.exe	807a927252237ee6436724cbbcd05fa0_JaffaCakes118.exe
PID 4360 wrote to memory of 2584	4360	807a927252237ee6436724cbbcd05fa0_JaffaCakes118.exe	807a927252237ee6436724cbbcd05fa0_JaffaCakes118.exe
PID 4360 wrote to memory of 2584	4360	807a927252237ee6436724cbbcd05fa0_JaffaCakes118.exe	807a927252237ee6436724cbbcd05fa0_JaffaCakes118.exe
PID 4360 wrote to memory of 2584	4360	807a927252237ee6436724cbbcd05fa0_JaffaCakes118.exe	807a927252237ee6436724cbbcd05fa0_JaffaCakes118.exe
PID 4360 wrote to memory of 2584	4360	807a927252237ee6436724cbbcd05fa0_JaffaCakes118.exe	807a927252237ee6436724cbbcd05fa0_JaffaCakes118.exe
PID 4360 wrote to memory of 2584	4360	807a927252237ee6436724cbbcd05fa0_JaffaCakes118.exe	807a927252237ee6436724cbbcd05fa0_JaffaCakes118.exe
PID 4360 wrote to memory of 2584	4360	807a927252237ee6436724cbbcd05fa0_JaffaCakes118.exe	807a927252237ee6436724cbbcd05fa0_JaffaCakes118.exe
PID 4360 wrote to memory of 2584	4360	807a927252237ee6436724cbbcd05fa0_JaffaCakes118.exe	807a927252237ee6436724cbbcd05fa0_JaffaCakes118.exe
PID 4360 wrote to memory of 2584	4360	807a927252237ee6436724cbbcd05fa0_JaffaCakes118.exe	807a927252237ee6436724cbbcd05fa0_JaffaCakes118.exe

C:\Users\Admin\AppData\Local\Temp\807a927252237ee6436724cbbcd05fa0_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\807a927252237ee6436724cbbcd05fa0_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4360
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\rFmqUFUNsPfqc" /XML "C:\Users\Admin\AppData\Local\Temp\tmp3C58.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:756
- C:\Users\Admin\AppData\Local\Temp\807a927252237ee6436724cbbcd05fa0_JaffaCakes118.exe
  "{path}"
  2⤵
  PID:2584
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2584 -s 1304
    3⤵
    - Program crash
    PID:972

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2584 -ip 2584
1⤵
PID:5084

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

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\tmp3C58.tmp

Filesize
1KB

MD5
37dbe899b2025e1800aef37fc4fd89b1

SHA1
dc892e90f0de9fe89582b0e33336e567d163a542

SHA256
88fdab6e7c38e053c1054f07f3959ca5d57eb7e989f99dceae97e429381bc622

SHA512
4eca1ce8b462fb5e896594fef49b1635201dec21121b0aa6ae15126093e245cb082e97c634af4eff5758f72eaec3368bcf5558528ebb4b43a31ff93c3aa3aab1

Download Submit
memory/2584-21-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2584-17-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2584-15-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2584-14-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2584-13-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4360-4-0x00000000052B0000-0x000000000534C000-memory.dmp

Filesize
624KB

Download
memory/4360-7-0x0000000074940000-0x00000000750F0000-memory.dmp

Filesize
7.7MB

Download
memory/4360-8-0x0000000005B20000-0x0000000005BA2000-memory.dmp

Filesize
520KB

Download
memory/4360-9-0x00000000059F0000-0x0000000005A2C000-memory.dmp

Filesize
240KB

Download
memory/4360-6-0x000000007494E000-0x000000007494F000-memory.dmp

Filesize
4KB

Download
memory/4360-5-0x0000000005350000-0x00000000053E2000-memory.dmp

Filesize
584KB

Download
memory/4360-0-0x000000007494E000-0x000000007494F000-memory.dmp

Filesize
4KB

Download
memory/4360-3-0x0000000005200000-0x0000000005208000-memory.dmp

Filesize
32KB

Download
memory/4360-2-0x0000000074940000-0x00000000750F0000-memory.dmp

Filesize
7.7MB

Download
memory/4360-18-0x0000000074940000-0x00000000750F0000-memory.dmp

Filesize
7.7MB

Download
memory/4360-1-0x00000000006C0000-0x000000000077C000-memory.dmp

Filesize
752KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads