Malware Analysis Report

2025-01-03 04:59

Sample ID 241128-sr21qs1pcx
Target acc4fdc0e6c701455ee76253ebf158b1_JaffaCakes118
SHA256 8b0ac881b039733c573ab30cf037e0ce3d6f2981c0eb2342902b91ecf891adff
Tags
oski discovery infostealer spyware stealer
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

8b0ac881b039733c573ab30cf037e0ce3d6f2981c0eb2342902b91ecf891adff

Threat Level: Known bad

The file acc4fdc0e6c701455ee76253ebf158b1_JaffaCakes118 was found to be: Known bad.

Malicious Activity Summary

oski discovery infostealer spyware stealer

Oski family

Oski

Reads user/profile data of web browsers

Checks computer location settings

Suspicious use of SetThreadContext

Program crash

System Location Discovery: System Language Discovery

Unsigned PE

Enumerates physical storage devices

Suspicious behavior: EnumeratesProcesses

Scheduled Task/Job: Scheduled Task

Suspicious use of WriteProcessMemory

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-28 15:22

Signatures

Unsigned PE

Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-11-28 15:22

Reported

2024-11-28 15:24

Platform

win7-20240903-en

Max time kernel

117s

Max time network

118s

Command Line

"C:\Users\Admin\AppData\Local\Temp\SKBM-120821.exe"

Signatures

Oski

infostealer oski

Oski family

oski

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 2736 set thread context of 2492 N/A C:\Users\Admin\AppData\Local\Temp\SKBM-120821.exe C:\Users\Admin\AppData\Local\Temp\SKBM-120821.exe

Enumerates physical storage devices

Program crash

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Users\Admin\AppData\Local\Temp\SKBM-120821.exe

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\SKBM-120821.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\schtasks.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\SKBM-120821.exe N/A

Scheduled Task/Job: Scheduled Task

persistence execution
Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\schtasks.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\SKBM-120821.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\SKBM-120821.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2736 wrote to memory of 2412 N/A C:\Users\Admin\AppData\Local\Temp\SKBM-120821.exe C:\Windows\SysWOW64\schtasks.exe
PID 2736 wrote to memory of 2412 N/A C:\Users\Admin\AppData\Local\Temp\SKBM-120821.exe C:\Windows\SysWOW64\schtasks.exe
PID 2736 wrote to memory of 2412 N/A C:\Users\Admin\AppData\Local\Temp\SKBM-120821.exe C:\Windows\SysWOW64\schtasks.exe
PID 2736 wrote to memory of 2412 N/A C:\Users\Admin\AppData\Local\Temp\SKBM-120821.exe C:\Windows\SysWOW64\schtasks.exe
PID 2736 wrote to memory of 2492 N/A C:\Users\Admin\AppData\Local\Temp\SKBM-120821.exe C:\Users\Admin\AppData\Local\Temp\SKBM-120821.exe
PID 2736 wrote to memory of 2492 N/A C:\Users\Admin\AppData\Local\Temp\SKBM-120821.exe C:\Users\Admin\AppData\Local\Temp\SKBM-120821.exe
PID 2736 wrote to memory of 2492 N/A C:\Users\Admin\AppData\Local\Temp\SKBM-120821.exe C:\Users\Admin\AppData\Local\Temp\SKBM-120821.exe
PID 2736 wrote to memory of 2492 N/A C:\Users\Admin\AppData\Local\Temp\SKBM-120821.exe C:\Users\Admin\AppData\Local\Temp\SKBM-120821.exe
PID 2736 wrote to memory of 2492 N/A C:\Users\Admin\AppData\Local\Temp\SKBM-120821.exe C:\Users\Admin\AppData\Local\Temp\SKBM-120821.exe
PID 2736 wrote to memory of 2492 N/A C:\Users\Admin\AppData\Local\Temp\SKBM-120821.exe C:\Users\Admin\AppData\Local\Temp\SKBM-120821.exe
PID 2736 wrote to memory of 2492 N/A C:\Users\Admin\AppData\Local\Temp\SKBM-120821.exe C:\Users\Admin\AppData\Local\Temp\SKBM-120821.exe
PID 2736 wrote to memory of 2492 N/A C:\Users\Admin\AppData\Local\Temp\SKBM-120821.exe C:\Users\Admin\AppData\Local\Temp\SKBM-120821.exe
PID 2736 wrote to memory of 2492 N/A C:\Users\Admin\AppData\Local\Temp\SKBM-120821.exe C:\Users\Admin\AppData\Local\Temp\SKBM-120821.exe
PID 2736 wrote to memory of 2492 N/A C:\Users\Admin\AppData\Local\Temp\SKBM-120821.exe C:\Users\Admin\AppData\Local\Temp\SKBM-120821.exe
PID 2492 wrote to memory of 536 N/A C:\Users\Admin\AppData\Local\Temp\SKBM-120821.exe C:\Windows\SysWOW64\WerFault.exe
PID 2492 wrote to memory of 536 N/A C:\Users\Admin\AppData\Local\Temp\SKBM-120821.exe C:\Windows\SysWOW64\WerFault.exe
PID 2492 wrote to memory of 536 N/A C:\Users\Admin\AppData\Local\Temp\SKBM-120821.exe C:\Windows\SysWOW64\WerFault.exe
PID 2492 wrote to memory of 536 N/A C:\Users\Admin\AppData\Local\Temp\SKBM-120821.exe C:\Windows\SysWOW64\WerFault.exe

Processes

C:\Users\Admin\AppData\Local\Temp\SKBM-120821.exe

"C:\Users\Admin\AppData\Local\Temp\SKBM-120821.exe"

C:\Windows\SysWOW64\schtasks.exe

"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\rFmqUFUNsPfqc" /XML "C:\Users\Admin\AppData\Local\Temp\tmpDAD5.tmp"

C:\Users\Admin\AppData\Local\Temp\SKBM-120821.exe

"{path}"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2492 -s 112

Network

N/A

Files

memory/2736-0-0x00000000741CE000-0x00000000741CF000-memory.dmp

memory/2736-1-0x0000000000A40000-0x0000000000AFC000-memory.dmp

memory/2736-2-0x00000000741C0000-0x00000000748AE000-memory.dmp

memory/2736-3-0x00000000003D0000-0x00000000003D8000-memory.dmp

memory/2736-4-0x00000000741CE000-0x00000000741CF000-memory.dmp

memory/2736-5-0x00000000741C0000-0x00000000748AE000-memory.dmp

memory/2736-6-0x0000000005790000-0x0000000005812000-memory.dmp

memory/2736-7-0x0000000000520000-0x000000000055C000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\tmpDAD5.tmp

MD5 4fa0957fe479ec906cb12f1be356af07
SHA1 196eabaad288eba17b05ba4fd51ac91bdd26f2a3
SHA256 f7f951cdf85f9082b81f6a095a3154491d39a5e828a1d88603d7c2e95d80d16e
SHA512 1257fd9aa82cd5e813a41bf94d8d6069585ed2af36ba3ae318f0ddbc630ca1b5107d21207e95ba88f16ba9170bd3cca3811d84e6e5c73baf82fc1b3bb35b86e6

memory/2492-11-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2492-19-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2492-17-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

memory/2492-16-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2492-15-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2492-13-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2492-14-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2492-21-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2736-22-0x00000000741C0000-0x00000000748AE000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-28 15:22

Reported

2024-11-28 15:25

Platform

win10v2004-20241007-en

Max time kernel

148s

Max time network

155s

Command Line

"C:\Users\Admin\AppData\Local\Temp\SKBM-120821.exe"

Signatures

Oski

infostealer oski

Oski family

oski

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\SKBM-120821.exe N/A

Reads user/profile data of web browsers

spyware stealer

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 2700 set thread context of 1504 N/A C:\Users\Admin\AppData\Local\Temp\SKBM-120821.exe C:\Users\Admin\AppData\Local\Temp\SKBM-120821.exe

Enumerates physical storage devices

Program crash

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Users\Admin\AppData\Local\Temp\SKBM-120821.exe

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\SKBM-120821.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\schtasks.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\SKBM-120821.exe N/A

Scheduled Task/Job: Scheduled Task

persistence execution
Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\schtasks.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\SKBM-120821.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\SKBM-120821.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2700 wrote to memory of 4392 N/A C:\Users\Admin\AppData\Local\Temp\SKBM-120821.exe C:\Windows\SysWOW64\schtasks.exe
PID 2700 wrote to memory of 4392 N/A C:\Users\Admin\AppData\Local\Temp\SKBM-120821.exe C:\Windows\SysWOW64\schtasks.exe
PID 2700 wrote to memory of 4392 N/A C:\Users\Admin\AppData\Local\Temp\SKBM-120821.exe C:\Windows\SysWOW64\schtasks.exe
PID 2700 wrote to memory of 1504 N/A C:\Users\Admin\AppData\Local\Temp\SKBM-120821.exe C:\Users\Admin\AppData\Local\Temp\SKBM-120821.exe
PID 2700 wrote to memory of 1504 N/A C:\Users\Admin\AppData\Local\Temp\SKBM-120821.exe C:\Users\Admin\AppData\Local\Temp\SKBM-120821.exe
PID 2700 wrote to memory of 1504 N/A C:\Users\Admin\AppData\Local\Temp\SKBM-120821.exe C:\Users\Admin\AppData\Local\Temp\SKBM-120821.exe
PID 2700 wrote to memory of 1504 N/A C:\Users\Admin\AppData\Local\Temp\SKBM-120821.exe C:\Users\Admin\AppData\Local\Temp\SKBM-120821.exe
PID 2700 wrote to memory of 1504 N/A C:\Users\Admin\AppData\Local\Temp\SKBM-120821.exe C:\Users\Admin\AppData\Local\Temp\SKBM-120821.exe
PID 2700 wrote to memory of 1504 N/A C:\Users\Admin\AppData\Local\Temp\SKBM-120821.exe C:\Users\Admin\AppData\Local\Temp\SKBM-120821.exe
PID 2700 wrote to memory of 1504 N/A C:\Users\Admin\AppData\Local\Temp\SKBM-120821.exe C:\Users\Admin\AppData\Local\Temp\SKBM-120821.exe
PID 2700 wrote to memory of 1504 N/A C:\Users\Admin\AppData\Local\Temp\SKBM-120821.exe C:\Users\Admin\AppData\Local\Temp\SKBM-120821.exe
PID 2700 wrote to memory of 1504 N/A C:\Users\Admin\AppData\Local\Temp\SKBM-120821.exe C:\Users\Admin\AppData\Local\Temp\SKBM-120821.exe

Processes

C:\Users\Admin\AppData\Local\Temp\SKBM-120821.exe

"C:\Users\Admin\AppData\Local\Temp\SKBM-120821.exe"

C:\Windows\SysWOW64\schtasks.exe

"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\rFmqUFUNsPfqc" /XML "C:\Users\Admin\AppData\Local\Temp\tmp7FA.tmp"

C:\Users\Admin\AppData\Local\Temp\SKBM-120821.exe

"{path}"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 1504 -ip 1504

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1504 -s 1328

Network

Country Destination Domain Proto
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 8.8.8.8:53 149.220.183.52.in-addr.arpa udp
US 8.8.8.8:53 200.163.202.172.in-addr.arpa udp
US 8.8.8.8:53 241.42.69.40.in-addr.arpa udp
US 8.8.8.8:53 82.190.18.2.in-addr.arpa udp
US 8.8.8.8:53 zau.divendesign.in udp
US 107.178.223.183:80 zau.divendesign.in tcp
US 107.178.223.183:80 zau.divendesign.in tcp
US 107.178.223.183:80 zau.divendesign.in tcp
US 107.178.223.183:80 zau.divendesign.in tcp
US 107.178.223.183:80 zau.divendesign.in tcp
US 107.178.223.183:80 zau.divendesign.in tcp
US 8.8.8.8:53 183.223.178.107.in-addr.arpa udp
US 104.155.138.21:80 zau.divendesign.in tcp
US 104.155.138.21:80 zau.divendesign.in tcp
US 8.8.8.8:53 21.138.155.104.in-addr.arpa udp

Files

memory/2700-0-0x000000007518E000-0x000000007518F000-memory.dmp

memory/2700-1-0x0000000000160000-0x000000000021C000-memory.dmp

memory/2700-2-0x0000000075180000-0x0000000075930000-memory.dmp

memory/2700-3-0x0000000004CE0000-0x0000000004CE8000-memory.dmp

memory/2700-4-0x0000000004D90000-0x0000000004E2C000-memory.dmp

memory/2700-5-0x0000000004E30000-0x0000000004EC2000-memory.dmp

memory/2700-6-0x000000007518E000-0x000000007518F000-memory.dmp

memory/2700-7-0x0000000075180000-0x0000000075930000-memory.dmp

memory/2700-8-0x0000000005610000-0x0000000005692000-memory.dmp

memory/2700-9-0x00000000052C0000-0x00000000052FC000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\tmp7FA.tmp

MD5 5570235f4229a460596fb8522d0adce5
SHA1 ab78fe5341aa53352db310512b484bdfaeb634da
SHA256 9e6b61ad05d6dba0d9b04227b1b0d8e2487c071f3ac3bf077f6f42c8a730df5e
SHA512 122930eff6b89a1f168e1080fa1f31377124246cc3299d23de5746c04734b0b34ba76ac7c7e604a78cf5d2cd2e332f98df45ebf399c94d7c9e70d6e316f49be0

memory/1504-14-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1504-13-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1504-15-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1504-17-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2700-18-0x0000000075180000-0x0000000075930000-memory.dmp

memory/1504-19-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1504-22-0x0000000000400000-0x0000000000438000-memory.dmp