0895d21d420681cdb684ae9f23298c55cf112b76ac0a93ca2ac972dc34a3d89b

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240730-en
resource tags

arch:x64arch:x86image:win10v2004-20240730-enlocale:en-usos:windows10-2004-x64system
submitted
02/08/2024, 06:25

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General

Target

835abf994bf0040e41a551b7b658dcfb_JaffaCakes118.exe
Size

273KB
MD5

835abf994bf0040e41a551b7b658dcfb
SHA1

b9514d4983b74e605feab10f37318b44725388f2
SHA256

0895d21d420681cdb684ae9f23298c55cf112b76ac0a93ca2ac972dc34a3d89b
SHA512

b1f96ddaa6a2f5d8614c0788e64ed60f06f2861a393d58f9882bd12df8f53d1bff8ec7ed57e77295b58dc0e566810cd2471229022f4982592fe4c251e75ec8ee
SSDEEP

6144:zME1nmg1tDbJ5621YNxQzSll5CjKn/6By/zEs9hrIWOeUUu5v4:wgnJJU5CjKn/YyrZ9Z1UUo4

Score

7^/10

discovery

Malware Config

Signatures

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-1-5-21-1266786182-1874524688-71015548-1000\Control Panel\International\Geo\Nation	835abf994bf0040e41a551b7b658dcfb_JaffaCakes118.exe

Executes dropped EXE 1 IoCs

pid	Process
216	STR01.exe

Loads dropped DLL 1 IoCs

pid	Process
2076	regsvr32.exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
File opened for modification	C:\WINDOWS\SysWOW64\STR01.exe	835abf994bf0040e41a551b7b658dcfb_JaffaCakes118.exe
File created	C:\WINDOWS\SysWOW64\StRos.dll	835abf994bf0040e41a551b7b658dcfb_JaffaCakes118.exe
File opened for modification	C:\WINDOWS\SysWOW64\StRos.dll	835abf994bf0040e41a551b7b658dcfb_JaffaCakes118.exe
File created	C:\WINDOWS\SysWOW64\STR01.exe	835abf994bf0040e41a551b7b658dcfb_JaffaCakes118.exe

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 3 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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	regsvr32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	835abf994bf0040e41a551b7b658dcfb_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	STR01.exe

Modifies registry class 45 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{0EA868A0-7D32-4210-BDED-CB4AB3E9B4D1}\1.0\HELPDIR\ = "C:\\Windows\\System32"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{A6967235-026C-43EE-BA5A-98EFFAEF9E52}\ProxyStubClsid	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{0EA868A0-7D32-4210-BDED-CB4AB3E9B4D1}\1.0\0\win32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{A6967235-026C-43EE-BA5A-98EFFAEF9E52}\ProxyStubClsid32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{4094FBA8-338F-4FC9-A80C-EBEEB127F20B}\VERSION\ = "1.0"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{0EA868A0-7D32-4210-BDED-CB4AB3E9B4D1}\1.0\0	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{A6967235-026C-43EE-BA5A-98EFFAEF9E52}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{4094FBA8-338F-4FC9-A80C-EBEEB127F20B}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{4094FBA8-338F-4FC9-A80C-EBEEB127F20B}\InprocServer32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Core.StRos\Clsid	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{4094FBA8-338F-4FC9-A80C-EBEEB127F20B}\Programmable	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{0EA868A0-7D32-4210-BDED-CB4AB3E9B4D1}\1.0\FLAGS	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{A6967235-026C-43EE-BA5A-98EFFAEF9E52}\ProxyStubClsid32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{A6967235-026C-43EE-BA5A-98EFFAEF9E52}\TypeLib	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{A6967235-026C-43EE-BA5A-98EFFAEF9E52}\TypeLib\Version = "1.0"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{A6967235-026C-43EE-BA5A-98EFFAEF9E52}\TypeLib	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{4094FBA8-338F-4FC9-A80C-EBEEB127F20B}\ProgID\ = "Core.StRos"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{4094FBA8-338F-4FC9-A80C-EBEEB127F20B}\TypeLib	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Core.StRos\ = "Core.StRos"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{A6967235-026C-43EE-BA5A-98EFFAEF9E52}\ProxyStubClsid\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{0EA868A0-7D32-4210-BDED-CB4AB3E9B4D1}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{0EA868A0-7D32-4210-BDED-CB4AB3E9B4D1}\1.0	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{0EA868A0-7D32-4210-BDED-CB4AB3E9B4D1}\1.0\HELPDIR	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{A6967235-026C-43EE-BA5A-98EFFAEF9E52}\ = "_StRos"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{4094FBA8-338F-4FC9-A80C-EBEEB127F20B}\ = "Core.StRos"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{4094FBA8-338F-4FC9-A80C-EBEEB127F20B}\InprocServer32\ThreadingModel = "Apartment"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{A6967235-026C-43EE-BA5A-98EFFAEF9E52}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{4094FBA8-338F-4FC9-A80C-EBEEB127F20B}\ProgID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{4094FBA8-338F-4FC9-A80C-EBEEB127F20B}\VERSION	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{A6967235-026C-43EE-BA5A-98EFFAEF9E52}\ = "StRos"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{4094FBA8-338F-4FC9-A80C-EBEEB127F20B}\Implemented Categories	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{4094FBA8-338F-4FC9-A80C-EBEEB127F20B}\Implemented Categories\{40FC6ED5-2438-11CF-A3DB-080036F12502}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{0EA868A0-7D32-4210-BDED-CB4AB3E9B4D1}\1.0\ = "Core"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{A6967235-026C-43EE-BA5A-98EFFAEF9E52}\ = "_StRos"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{A6967235-026C-43EE-BA5A-98EFFAEF9E52}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{A6967235-026C-43EE-BA5A-98EFFAEF9E52}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{A6967235-026C-43EE-BA5A-98EFFAEF9E52}\TypeLib\ = "{0EA868A0-7D32-4210-BDED-CB4AB3E9B4D1}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{A6967235-026C-43EE-BA5A-98EFFAEF9E52}\TypeLib\Version = "1.0"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Core.StRos\Clsid\ = "{4094FBA8-338F-4FC9-A80C-EBEEB127F20B}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{0EA868A0-7D32-4210-BDED-CB4AB3E9B4D1}\1.0\FLAGS\ = "0"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{0EA868A0-7D32-4210-BDED-CB4AB3E9B4D1}\1.0\0\win32\ = "C:\\Windows\\SysWow64\\StRos.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{A6967235-026C-43EE-BA5A-98EFFAEF9E52}\TypeLib\ = "{0EA868A0-7D32-4210-BDED-CB4AB3E9B4D1}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{4094FBA8-338F-4FC9-A80C-EBEEB127F20B}\InprocServer32\ = "C:\\Windows\\SysWow64\\StRos.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{4094FBA8-338F-4FC9-A80C-EBEEB127F20B}\TypeLib\ = "{0EA868A0-7D32-4210-BDED-CB4AB3E9B4D1}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Core.StRos	regsvr32.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
216	STR01.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4584 wrote to memory of 216	4584	835abf994bf0040e41a551b7b658dcfb_JaffaCakes118.exe	86
PID 4584 wrote to memory of 216	4584	835abf994bf0040e41a551b7b658dcfb_JaffaCakes118.exe	86
PID 4584 wrote to memory of 216	4584	835abf994bf0040e41a551b7b658dcfb_JaffaCakes118.exe	86
PID 216 wrote to memory of 2076	216	STR01.exe	88
PID 216 wrote to memory of 2076	216	STR01.exe	88
PID 216 wrote to memory of 2076	216	STR01.exe	88

C:\Users\Admin\AppData\Local\Temp\835abf994bf0040e41a551b7b658dcfb_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\835abf994bf0040e41a551b7b658dcfb_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4584
- C:\WINDOWS\SysWOW64\STR01.exe
  "C:\WINDOWS\system32\STR01.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:216
- - C:\Windows\SysWOW64\regsvr32.exe
    C:\Windows\System32\regsvr32.exe /s C:\Windows\System32\StRos.dll
    3⤵
    - Loads dropped DLL
    - System Location Discovery: System Language Discovery
    - Modifies registry class
    PID:2076

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\SysWOW64\STR01.exe

Filesize
44KB

MD5
7e54a3c9ae3e6a966fb82fa58fadfd14

SHA1
87583bf4cd22c6874ce4110f0ebe220a8dd1f783

SHA256
334d7546fa06caccbac03fc6b58778638ec8992cdb6d7953fea6fc4367757db8

SHA512
8d9196e05d4056cd6178aa80f438467d6e567238ca82f2c0577792da29f08b81f985aa72cf15b6de6d3cfcb22299e7264d94634c36a646a50e8a5c601255a1d5

Download Submit
C:\Windows\SysWOW64\StRos.dll

Filesize
932KB

MD5
0663da658f40d0fec5e0f55a3f2c3140

SHA1
0ce1d032f7fd52468456465e09b01d9119c30a5d

SHA256
2a5ad12c31a560ac4c6c597cfde48250e17c1533a984af447222fd98f6bf8606

SHA512
be6282293b69ac92fc31c6af92f43db011e0f1abd184af278c1ca090d17a8262422ee3e86f9333117d517291f751289dccb127fa52a8fcd054d4fca861dcd41d

Download Submit
memory/4584-14-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download