tofsee | 0f9ab2429ef2e90dc55a1b537175c2e5c4be200de90cec04e5c66c68513b3d5a

Analysis

max time kernel
146s
max time network
143s
platform
windows10-2004_x64
resource
win10v2004-20240709-en
resource tags

arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
submitted
17/07/2024, 23:58

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General

Target
555a84e13bf2fc3192ed64aa2fe51316_JaffaCakes118.exe
Size 11.4MB
Sample240717-3z6c8syfrc
SHA256 0f9ab2429ef2e90dc55a1b537175c2e5c4be200de90cec04e5c66c68513b3d5a
MD5 555a84e13bf2fc3192ed64aa2fe51316
SHA1 d3edbb5d9ab41f575430e7f6e6bad604bce847d0
SHA512 514ab8a31137bc584a9183d750db08e69befcf9aac2ac74c72444e2650d3eb3618f127c24039a6a40d16c4af94ee1052974736481ecdd0df75d92be3d115b1e3
SSDEEP 6144:pxU32BT0jz22222222222222222222222222222222222222222222222222222/:bUmK
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

tofsee 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
4240	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\gibrhive\ImagePath = "C:\\Windows\\SysWOW64\\gibrhive\\kavhbnrj.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-1-5-21-464762018-485119342-1613148473-1000\Control Panel\International\Geo\Nation	555a84e13bf2fc3192ed64aa2fe51316_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
2728	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
5044	kavhbnrj.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 5044 set thread context of 2728	5044	kavhbnrj.exe	110

Launches sc.exe 3 IoCs

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

pid	Process
4588	sc.exe
3560	sc.exe
2088	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 opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
448	580	WerFault.exe	83
1612	5044	WerFault.exe	102

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 580 wrote to memory of 4400	580	555a84e13bf2fc3192ed64aa2fe51316_JaffaCakes118.exe	92
PID 580 wrote to memory of 4400	580	555a84e13bf2fc3192ed64aa2fe51316_JaffaCakes118.exe	92
PID 580 wrote to memory of 4400	580	555a84e13bf2fc3192ed64aa2fe51316_JaffaCakes118.exe	92
PID 580 wrote to memory of 4952	580	555a84e13bf2fc3192ed64aa2fe51316_JaffaCakes118.exe	94
PID 580 wrote to memory of 4952	580	555a84e13bf2fc3192ed64aa2fe51316_JaffaCakes118.exe	94
PID 580 wrote to memory of 4952	580	555a84e13bf2fc3192ed64aa2fe51316_JaffaCakes118.exe	94
PID 580 wrote to memory of 4588	580	555a84e13bf2fc3192ed64aa2fe51316_JaffaCakes118.exe	96
PID 580 wrote to memory of 4588	580	555a84e13bf2fc3192ed64aa2fe51316_JaffaCakes118.exe	96
PID 580 wrote to memory of 4588	580	555a84e13bf2fc3192ed64aa2fe51316_JaffaCakes118.exe	96
PID 580 wrote to memory of 3560	580	555a84e13bf2fc3192ed64aa2fe51316_JaffaCakes118.exe	98
PID 580 wrote to memory of 3560	580	555a84e13bf2fc3192ed64aa2fe51316_JaffaCakes118.exe	98
PID 580 wrote to memory of 3560	580	555a84e13bf2fc3192ed64aa2fe51316_JaffaCakes118.exe	98
PID 580 wrote to memory of 2088	580	555a84e13bf2fc3192ed64aa2fe51316_JaffaCakes118.exe	100
PID 580 wrote to memory of 2088	580	555a84e13bf2fc3192ed64aa2fe51316_JaffaCakes118.exe	100
PID 580 wrote to memory of 2088	580	555a84e13bf2fc3192ed64aa2fe51316_JaffaCakes118.exe	100
PID 580 wrote to memory of 4240	580	555a84e13bf2fc3192ed64aa2fe51316_JaffaCakes118.exe	103
PID 580 wrote to memory of 4240	580	555a84e13bf2fc3192ed64aa2fe51316_JaffaCakes118.exe	103
PID 580 wrote to memory of 4240	580	555a84e13bf2fc3192ed64aa2fe51316_JaffaCakes118.exe	103
PID 5044 wrote to memory of 2728	5044	kavhbnrj.exe	110
PID 5044 wrote to memory of 2728	5044	kavhbnrj.exe	110
PID 5044 wrote to memory of 2728	5044	kavhbnrj.exe	110
PID 5044 wrote to memory of 2728	5044	kavhbnrj.exe	110
PID 5044 wrote to memory of 2728	5044	kavhbnrj.exe	110

C:\Users\Admin\AppData\Local\Temp\555a84e13bf2fc3192ed64aa2fe51316_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\555a84e13bf2fc3192ed64aa2fe51316_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:580
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\gibrhive\
  2⤵
  PID:4400
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\kavhbnrj.exe" C:\Windows\SysWOW64\gibrhive\
  2⤵
  PID:4952
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create gibrhive binPath= "C:\Windows\SysWOW64\gibrhive\kavhbnrj.exe /d\"C:\Users\Admin\AppData\Local\Temp\555a84e13bf2fc3192ed64aa2fe51316_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  PID:4588
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description gibrhive "wifi internet conection"
  2⤵
  - Launches sc.exe
  PID:3560
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start gibrhive
  2⤵
  - Launches sc.exe
  PID:2088
- 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
  PID:4240
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 580 -s 1036
  2⤵
  - Program crash
  PID:448

C:\Windows\SysWOW64\gibrhive\kavhbnrj.exe
C:\Windows\SysWOW64\gibrhive\kavhbnrj.exe /d"C:\Users\Admin\AppData\Local\Temp\555a84e13bf2fc3192ed64aa2fe51316_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:5044
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  PID:2728
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5044 -s 532
  2⤵
  - Program crash
  PID:1612

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 580 -ip 580
1⤵
PID:1748

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 5044 -ip 5044
1⤵
PID:1060

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

kavhbnrj.exe

Path C:\Users\Admin\AppData\Local\Temp\kavhbnrj.exe
Size 14.3MB
SHA256 f8b0ea691b301fde2263fb97bfb0a3ae681434a499f2b9c2c0dc024dd4a0ef41
MD5 15ef8fd29255a5fde43cc9a520164a50
SHA1 e82abcd0645188cfddefa72a10d4f24c3722232f
SHA512 d2971da27e6b180cd3e6c3d858294b752ca80433487eda4494f1d5356497626ae3cd2f6e2dff4669161d44f3457274875856df8e0c6cb1e2a8f05261e11a7915
SSDEEP 6144:1xU32BT0jz22222222222222222222222222222222222222222222222222222S:/UmK
MD5 SHA1 SHA512 SSDEEP

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memory/580-9-0x0000000002220000-0x0000000002233000-memory.dmp

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memory/580-4-0x0000000000400000-0x0000000000415000-memory.dmp

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memory/580-1-0x00000000005E0000-0x00000000006E0000-memory.dmp

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memory/580-8-0x0000000000400000-0x00000000004B0000-memory.dmp

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memory/580-10-0x0000000000400000-0x0000000000415000-memory.dmp

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memory/580-2-0x0000000002220000-0x0000000002233000-memory.dmp

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memory/2728-14-0x0000000001200000-0x0000000001215000-memory.dmp

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memory/2728-16-0x0000000001200000-0x0000000001215000-memory.dmp

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memory/2728-17-0x0000000001200000-0x0000000001215000-memory.dmp

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memory/5044-12-0x0000000000400000-0x00000000004B0000-memory.dmp

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memory/5044-11-0x0000000000400000-0x00000000004B0000-memory.dmp

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memory/5044-13-0x0000000000400000-0x00000000004B0000-memory.dmp

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memory/5044-18-0x0000000000400000-0x00000000004B0000-memory.dmp

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Analysis

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General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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