tofsee | aab32afff9386da5026e13907bc9b3449ca79216b3bdf027a4f54a399dde7576

Analysis

max time kernel
149s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
10/09/2024, 20:30

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General

Target
d8fee716b4673dbe2860a3cefb3ccf03_JaffaCakes118.exe
Size 11.5MB
Sample240910-zaacqavfqa
SHA256 aab32afff9386da5026e13907bc9b3449ca79216b3bdf027a4f54a399dde7576
MD5 d8fee716b4673dbe2860a3cefb3ccf03
SHA1 1649c17a2b4c0d816aeba0b6759afa73b7b4a6d9
SHA512 c8d20e8b80ea466e7ebf3a4b8303f27d9566bacd3614f6b36bca683dc5e54d5aca97aa66897bb70f50072f5d97de27c4702d57764d344399f1bee5e3ba6359b9
SSDEEP 3072:/oiqjV0QCeV75zMwb2EfDXTBrt0c5f+Z7ApWt+0krytpObPUfAGM4H1M4CjiJNx4:/oiqjWHeV9zthDjBrmA+VkDbSAgQiTx
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
4960	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\oaqgfztf\ImagePath = "C:\\Windows\\SysWOW64\\oaqgfztf\\zxmysozp.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-1-5-21-2412658365-3084825385-3340777666-1000\Control Panel\International\Geo\Nation	d8fee716b4673dbe2860a3cefb3ccf03_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
976	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3652	zxmysozp.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3652 set thread context of 976	3652	zxmysozp.exe	110

Launches sc.exe 3 IoCs

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

pid	Process
2100	sc.exe
4840	sc.exe
5000	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 6 IoCs

pid	pid_target	Process	procid_target
2964	1104	WerFault.exe	82
876	1104	WerFault.exe	82
1720	1104	WerFault.exe	82
3944	3652	WerFault.exe	100
4836	3652	WerFault.exe	100
2680	3652	WerFault.exe	100

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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.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	zxmysozp.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	d8fee716b4673dbe2860a3cefb3ccf03_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1104 wrote to memory of 2612	1104	d8fee716b4673dbe2860a3cefb3ccf03_JaffaCakes118.exe	88
PID 1104 wrote to memory of 2612	1104	d8fee716b4673dbe2860a3cefb3ccf03_JaffaCakes118.exe	88
PID 1104 wrote to memory of 2612	1104	d8fee716b4673dbe2860a3cefb3ccf03_JaffaCakes118.exe	88
PID 1104 wrote to memory of 4592	1104	d8fee716b4673dbe2860a3cefb3ccf03_JaffaCakes118.exe	90
PID 1104 wrote to memory of 4592	1104	d8fee716b4673dbe2860a3cefb3ccf03_JaffaCakes118.exe	90
PID 1104 wrote to memory of 4592	1104	d8fee716b4673dbe2860a3cefb3ccf03_JaffaCakes118.exe	90
PID 1104 wrote to memory of 2100	1104	d8fee716b4673dbe2860a3cefb3ccf03_JaffaCakes118.exe	92
PID 1104 wrote to memory of 2100	1104	d8fee716b4673dbe2860a3cefb3ccf03_JaffaCakes118.exe	92
PID 1104 wrote to memory of 2100	1104	d8fee716b4673dbe2860a3cefb3ccf03_JaffaCakes118.exe	92
PID 1104 wrote to memory of 4840	1104	d8fee716b4673dbe2860a3cefb3ccf03_JaffaCakes118.exe	94
PID 1104 wrote to memory of 4840	1104	d8fee716b4673dbe2860a3cefb3ccf03_JaffaCakes118.exe	94
PID 1104 wrote to memory of 4840	1104	d8fee716b4673dbe2860a3cefb3ccf03_JaffaCakes118.exe	94
PID 1104 wrote to memory of 5000	1104	d8fee716b4673dbe2860a3cefb3ccf03_JaffaCakes118.exe	98
PID 1104 wrote to memory of 5000	1104	d8fee716b4673dbe2860a3cefb3ccf03_JaffaCakes118.exe	98
PID 1104 wrote to memory of 5000	1104	d8fee716b4673dbe2860a3cefb3ccf03_JaffaCakes118.exe	98
PID 1104 wrote to memory of 4960	1104	d8fee716b4673dbe2860a3cefb3ccf03_JaffaCakes118.exe	101
PID 1104 wrote to memory of 4960	1104	d8fee716b4673dbe2860a3cefb3ccf03_JaffaCakes118.exe	101
PID 1104 wrote to memory of 4960	1104	d8fee716b4673dbe2860a3cefb3ccf03_JaffaCakes118.exe	101
PID 3652 wrote to memory of 976	3652	zxmysozp.exe	110
PID 3652 wrote to memory of 976	3652	zxmysozp.exe	110
PID 3652 wrote to memory of 976	3652	zxmysozp.exe	110
PID 3652 wrote to memory of 976	3652	zxmysozp.exe	110
PID 3652 wrote to memory of 976	3652	zxmysozp.exe	110

C:\Users\Admin\AppData\Local\Temp\d8fee716b4673dbe2860a3cefb3ccf03_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\d8fee716b4673dbe2860a3cefb3ccf03_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1104
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\oaqgfztf\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2612
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\zxmysozp.exe" C:\Windows\SysWOW64\oaqgfztf\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4592
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create oaqgfztf binPath= "C:\Windows\SysWOW64\oaqgfztf\zxmysozp.exe /d\"C:\Users\Admin\AppData\Local\Temp\d8fee716b4673dbe2860a3cefb3ccf03_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2100
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description oaqgfztf "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4840
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start oaqgfztf
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:5000
- 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:4960
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1104 -s 596
  2⤵
  - Program crash
  PID:2964
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1104 -s 756
  2⤵
  - Program crash
  PID:876
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1104 -s 1044
  2⤵
  - Program crash
  PID:1720

C:\Windows\SysWOW64\oaqgfztf\zxmysozp.exe
C:\Windows\SysWOW64\oaqgfztf\zxmysozp.exe /d"C:\Users\Admin\AppData\Local\Temp\d8fee716b4673dbe2860a3cefb3ccf03_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3652
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:976
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3652 -s 516
  2⤵
  - Program crash
  PID:3944
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3652 -s 536
  2⤵
  - Program crash
  PID:4836
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3652 -s 552
  2⤵
  - Program crash
  PID:2680

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1104 -ip 1104
1⤵
PID:3868

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 1104 -ip 1104
1⤵
PID:1224

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 1104 -ip 1104
1⤵
PID:712

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 184 -p 3652 -ip 3652
1⤵
PID:5024

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 3652 -ip 3652
1⤵
PID:4172

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 184 -p 3652 -ip 3652
1⤵
PID:4648

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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zxmysozp.exe

Path C:\Users\Admin\AppData\Local\Temp\zxmysozp.exe
Size 11.1MB
SHA256 63415c3a63d97bf0a155cc2f7598ed25e13d55ac9975b56ef5a56a68fd3339ee
MD5 6a6ad765ee6b385b39c7a3cd50510704
SHA1 855dddd4c7fdbdb0249210b2a66f3216acf640da
SHA512 a3631475028c862bf1c94131ff14549371dd8473a096f1a5f8e3b4a5d63dff973bfa52f9d0e08a834a13241b6de3739df1486d9aa55f43f0bd320c4edf609673
SSDEEP 3072:poiqjV0QCeV75zMwb2EfDXTBrt0c5f+Z7ApWt+0krytpObPUfAGM4H1M4CjiJNx4:poiqjWHeV9zthDjBrmA+VkDbSAgQiTx
MD5 SHA1 SHA512 SSDEEP

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memory/976-12-0x0000000000360000-0x0000000000375000-memory.dmp

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memory/976-17-0x0000000000360000-0x0000000000375000-memory.dmp

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memory/976-15-0x0000000000360000-0x0000000000375000-memory.dmp

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memory/1104-9-0x00000000009B0000-0x00000000009C3000-memory.dmp

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memory/1104-10-0x0000000000400000-0x0000000000415000-memory.dmp

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memory/1104-1-0x0000000000A70000-0x0000000000B70000-memory.dmp

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memory/1104-8-0x0000000000400000-0x000000000086B000-memory.dmp

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memory/1104-3-0x0000000000400000-0x0000000000415000-memory.dmp

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memory/1104-2-0x00000000009B0000-0x00000000009C3000-memory.dmp

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memory/3652-13-0x0000000000400000-0x000000000086B000-memory.dmp

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memory/3652-16-0x0000000000400000-0x000000000086B000-memory.dmp

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memory/3652-11-0x0000000000400000-0x000000000086B000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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