tofsee | eabd0136260217d765ae216349093ae50a185532fce327fce9454d7d9a3ab0b4

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240730-en
resource tags

arch:x64arch:x86image:win10v2004-20240730-enlocale:en-usos:windows10-2004-x64system
submitted
30/07/2024, 23:24

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General

Target
7a7342222f97183ec5ccb6a70ff57f74_JaffaCakes118.exe
Size 11.4MB
Sample240730-3dvdvaygnc
SHA256 eabd0136260217d765ae216349093ae50a185532fce327fce9454d7d9a3ab0b4
MD5 7a7342222f97183ec5ccb6a70ff57f74
SHA1 82c4f25aca3367b175cdc6aa27d6c53e7817d9f5
SHA512 427e05be5451a915a8c36d42c50c616655575a04097b30c584af9cdaef4a95f4f98e59d1960f9f4ef94fe71e74a63b6adb2d806e613f481847ad0c97775f0353
SSDEEP 49152:/wAKFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFl:/w
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

defeatwax.ru
refabyd.info

Signatures

Tofsee
Backdoor/botnet which carries out malicious activities based on commands from a C2 server.
trojan tofsee
Creates new service(s) 2 TTPs
persistence execution

Windows Service
T1543.003

Service Execution
T1569.002

Modifies Windows Firewall 2 TTPs 1 IoCs

evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
2716	netsh.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\wklkeyq\ImagePath = "C:\\Windows\\SysWOW64\\wklkeyq\\uoxhuxco.exe"	svchost.exe

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-1-5-21-2927035347-1736702767-189270196-1000\Control Panel\International\Geo\Nation	7a7342222f97183ec5ccb6a70ff57f74_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
1620	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3972	uoxhuxco.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3972 set thread context of 1620	3972	uoxhuxco.exe	100

Launches sc.exe 3 IoCs

Sc.exe is a Windows utlilty to control services on the system.

pid	Process
4976	sc.exe
4548	sc.exe
888	sc.exe

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

System Information Discovery
T1082

Event Triggered Execution: Netsh Helper DLL 1 TTPs 3 IoCs

Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.

persistence privilege_escalation

Netsh Helper DLL

T1546.007

description	ioc	Process
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
4412	5116	WerFault.exe	80
4444	3972	WerFault.exe	94

System Location Discovery: System Language Discovery 1 TTPs 9 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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	uoxhuxco.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	7a7342222f97183ec5ccb6a70ff57f74_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 5116 wrote to memory of 2728	5116	7a7342222f97183ec5ccb6a70ff57f74_JaffaCakes118.exe	84
PID 5116 wrote to memory of 2728	5116	7a7342222f97183ec5ccb6a70ff57f74_JaffaCakes118.exe	84
PID 5116 wrote to memory of 2728	5116	7a7342222f97183ec5ccb6a70ff57f74_JaffaCakes118.exe	84
PID 5116 wrote to memory of 1224	5116	7a7342222f97183ec5ccb6a70ff57f74_JaffaCakes118.exe	86
PID 5116 wrote to memory of 1224	5116	7a7342222f97183ec5ccb6a70ff57f74_JaffaCakes118.exe	86
PID 5116 wrote to memory of 1224	5116	7a7342222f97183ec5ccb6a70ff57f74_JaffaCakes118.exe	86
PID 5116 wrote to memory of 4976	5116	7a7342222f97183ec5ccb6a70ff57f74_JaffaCakes118.exe	88
PID 5116 wrote to memory of 4976	5116	7a7342222f97183ec5ccb6a70ff57f74_JaffaCakes118.exe	88
PID 5116 wrote to memory of 4976	5116	7a7342222f97183ec5ccb6a70ff57f74_JaffaCakes118.exe	88
PID 5116 wrote to memory of 4548	5116	7a7342222f97183ec5ccb6a70ff57f74_JaffaCakes118.exe	90
PID 5116 wrote to memory of 4548	5116	7a7342222f97183ec5ccb6a70ff57f74_JaffaCakes118.exe	90
PID 5116 wrote to memory of 4548	5116	7a7342222f97183ec5ccb6a70ff57f74_JaffaCakes118.exe	90
PID 5116 wrote to memory of 888	5116	7a7342222f97183ec5ccb6a70ff57f74_JaffaCakes118.exe	92
PID 5116 wrote to memory of 888	5116	7a7342222f97183ec5ccb6a70ff57f74_JaffaCakes118.exe	92
PID 5116 wrote to memory of 888	5116	7a7342222f97183ec5ccb6a70ff57f74_JaffaCakes118.exe	92
PID 5116 wrote to memory of 2716	5116	7a7342222f97183ec5ccb6a70ff57f74_JaffaCakes118.exe	95
PID 5116 wrote to memory of 2716	5116	7a7342222f97183ec5ccb6a70ff57f74_JaffaCakes118.exe	95
PID 5116 wrote to memory of 2716	5116	7a7342222f97183ec5ccb6a70ff57f74_JaffaCakes118.exe	95
PID 3972 wrote to memory of 1620	3972	uoxhuxco.exe	100
PID 3972 wrote to memory of 1620	3972	uoxhuxco.exe	100
PID 3972 wrote to memory of 1620	3972	uoxhuxco.exe	100
PID 3972 wrote to memory of 1620	3972	uoxhuxco.exe	100
PID 3972 wrote to memory of 1620	3972	uoxhuxco.exe	100

C:\Users\Admin\AppData\Local\Temp\7a7342222f97183ec5ccb6a70ff57f74_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\7a7342222f97183ec5ccb6a70ff57f74_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5116
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\wklkeyq\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2728
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\uoxhuxco.exe" C:\Windows\SysWOW64\wklkeyq\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1224
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create wklkeyq binPath= "C:\Windows\SysWOW64\wklkeyq\uoxhuxco.exe /d\"C:\Users\Admin\AppData\Local\Temp\7a7342222f97183ec5ccb6a70ff57f74_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4976
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description wklkeyq "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4548
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start wklkeyq
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:888
- C:\Windows\SysWOW64\netsh.exe
  "C:\Windows\System32\netsh.exe" advfirewall firewall add rule name="Host-process for services of Windows" dir=in action=allow program="C:\Windows\SysWOW64\svchost.exe" enable=yes>nul
  2⤵
  - Modifies Windows Firewall
  - Event Triggered Execution: Netsh Helper DLL
  - System Location Discovery: System Language Discovery
  PID:2716
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5116 -s 1248
  2⤵
  - Program crash
  PID:4412

C:\Windows\SysWOW64\wklkeyq\uoxhuxco.exe
C:\Windows\SysWOW64\wklkeyq\uoxhuxco.exe /d"C:\Users\Admin\AppData\Local\Temp\7a7342222f97183ec5ccb6a70ff57f74_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3972
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1620
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3972 -s 512
  2⤵
  - Program crash
  PID:4444

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 5116 -ip 5116
1⤵
PID:3432

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 3972 -ip 3972
1⤵
PID:2684

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

T1569

Service Execution

T1569.002

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Defense Evasion

Impair Defenses

T1562

Disable or Modify System Firewall

T1562.004

Modify Registry

T1112

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

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Downloads

uoxhuxco.exe

Path C:\Users\Admin\AppData\Local\Temp\uoxhuxco.exe
Size 12.2MB
SHA256 7e9ea85e12d37a885efce1f52ad6c6c8564ba8c12f664c377bb9900ffeb2d11a
MD5 521d5a03ef574b89dddb0b430459fa8d
SHA1 047203e7242ddb3f406bb63570ebd8f05e0c948e
SHA512 e7ddf3b7529d531ac42b36bac988a2ca2d74018df33740a85f22ad7460299c986d278b97c78dec2c747b95d1175bb68b2b195c6e31e8a7e1e1b93764d4bd696c
SSDEEP 49152:QwAKFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF9:Qw
MD5 SHA1 SHA512 SSDEEP

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memory/1620-11-0x00000000006F0000-0x0000000000705000-memory.dmp

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memory/1620-13-0x00000000006F0000-0x0000000000705000-memory.dmp

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memory/1620-14-0x00000000006F0000-0x0000000000705000-memory.dmp

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memory/3972-15-0x0000000000400000-0x0000000002B90000-memory.dmp

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memory/5116-1-0x0000000002EE0000-0x0000000002FE0000-memory.dmp

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memory/5116-2-0x00000000001E0000-0x00000000001F3000-memory.dmp

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memory/5116-3-0x0000000000400000-0x0000000000415000-memory.dmp

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memory/5116-10-0x0000000000400000-0x0000000000415000-memory.dmp

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memory/5116-9-0x00000000001E0000-0x00000000001F3000-memory.dmp

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memory/5116-8-0x0000000000400000-0x0000000002B90000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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