tofsee | a5c89dbcfcc30b80354c001e087b061544c1e1f64a40e2b02935a4a1e9138252

Analysis

max time kernel
148s
max time network
120s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
01-12-2024 23:08

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General

Target

b598c70600e96cd21f5ee80cac5041b1_JaffaCakes118.exe
Size

14.3MB
MD5

b598c70600e96cd21f5ee80cac5041b1
SHA1

b5054afd240d38b4a452fbc3da6c11c99cb47aac
SHA256

a5c89dbcfcc30b80354c001e087b061544c1e1f64a40e2b02935a4a1e9138252
SHA512

4bf972d79628153e5b4f37d2979caa60cbb4d6093ce9979ccadfc468b466c797dcaa9cff3e2839e48419fe224de14f2c18b88602f3f89d47e5cd68f00edd8db2
SSDEEP

196608:jXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXH:

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

43.231.4.6

lazystax.ru

Signatures

Tofsee
Backdoor/botnet which carries out malicious activities based on commands from a C2 server.
trojan tofsee
Tofsee family
tofsee

Windows security bypass 2 TTPs 1 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\SysWOW64\fpfsdxse = "0"	svchost.exe

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
2544	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\fpfsdxse\ImagePath = "C:\\Windows\\SysWOW64\\fpfsdxse\\tlznbaqk.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2700	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2664	tlznbaqk.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2664 set thread context of 2700	2664	tlznbaqk.exe	44

Launches sc.exe 3 IoCs

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

pid	Process
2820	sc.exe
2044	sc.exe
2680	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

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	cmd.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	tlznbaqk.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b598c70600e96cd21f5ee80cac5041b1_JaffaCakes118.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 30 IoCs

description	pid	Process	procid_target
PID 1800 wrote to memory of 2060	1800	b598c70600e96cd21f5ee80cac5041b1_JaffaCakes118.exe	31
PID 1800 wrote to memory of 2060	1800	b598c70600e96cd21f5ee80cac5041b1_JaffaCakes118.exe	31
PID 1800 wrote to memory of 2060	1800	b598c70600e96cd21f5ee80cac5041b1_JaffaCakes118.exe	31
PID 1800 wrote to memory of 2060	1800	b598c70600e96cd21f5ee80cac5041b1_JaffaCakes118.exe	31
PID 1800 wrote to memory of 2832	1800	b598c70600e96cd21f5ee80cac5041b1_JaffaCakes118.exe	33
PID 1800 wrote to memory of 2832	1800	b598c70600e96cd21f5ee80cac5041b1_JaffaCakes118.exe	33
PID 1800 wrote to memory of 2832	1800	b598c70600e96cd21f5ee80cac5041b1_JaffaCakes118.exe	33
PID 1800 wrote to memory of 2832	1800	b598c70600e96cd21f5ee80cac5041b1_JaffaCakes118.exe	33
PID 1800 wrote to memory of 2044	1800	b598c70600e96cd21f5ee80cac5041b1_JaffaCakes118.exe	35
PID 1800 wrote to memory of 2044	1800	b598c70600e96cd21f5ee80cac5041b1_JaffaCakes118.exe	35
PID 1800 wrote to memory of 2044	1800	b598c70600e96cd21f5ee80cac5041b1_JaffaCakes118.exe	35
PID 1800 wrote to memory of 2044	1800	b598c70600e96cd21f5ee80cac5041b1_JaffaCakes118.exe	35
PID 1800 wrote to memory of 2680	1800	b598c70600e96cd21f5ee80cac5041b1_JaffaCakes118.exe	37
PID 1800 wrote to memory of 2680	1800	b598c70600e96cd21f5ee80cac5041b1_JaffaCakes118.exe	37
PID 1800 wrote to memory of 2680	1800	b598c70600e96cd21f5ee80cac5041b1_JaffaCakes118.exe	37
PID 1800 wrote to memory of 2680	1800	b598c70600e96cd21f5ee80cac5041b1_JaffaCakes118.exe	37
PID 1800 wrote to memory of 2820	1800	b598c70600e96cd21f5ee80cac5041b1_JaffaCakes118.exe	39
PID 1800 wrote to memory of 2820	1800	b598c70600e96cd21f5ee80cac5041b1_JaffaCakes118.exe	39
PID 1800 wrote to memory of 2820	1800	b598c70600e96cd21f5ee80cac5041b1_JaffaCakes118.exe	39
PID 1800 wrote to memory of 2820	1800	b598c70600e96cd21f5ee80cac5041b1_JaffaCakes118.exe	39
PID 1800 wrote to memory of 2544	1800	b598c70600e96cd21f5ee80cac5041b1_JaffaCakes118.exe	42
PID 1800 wrote to memory of 2544	1800	b598c70600e96cd21f5ee80cac5041b1_JaffaCakes118.exe	42
PID 1800 wrote to memory of 2544	1800	b598c70600e96cd21f5ee80cac5041b1_JaffaCakes118.exe	42
PID 1800 wrote to memory of 2544	1800	b598c70600e96cd21f5ee80cac5041b1_JaffaCakes118.exe	42
PID 2664 wrote to memory of 2700	2664	tlznbaqk.exe	44
PID 2664 wrote to memory of 2700	2664	tlznbaqk.exe	44
PID 2664 wrote to memory of 2700	2664	tlznbaqk.exe	44
PID 2664 wrote to memory of 2700	2664	tlznbaqk.exe	44
PID 2664 wrote to memory of 2700	2664	tlznbaqk.exe	44
PID 2664 wrote to memory of 2700	2664	tlznbaqk.exe	44

C:\Users\Admin\AppData\Local\Temp\b598c70600e96cd21f5ee80cac5041b1_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\b598c70600e96cd21f5ee80cac5041b1_JaffaCakes118.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1800
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\fpfsdxse\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2060
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\tlznbaqk.exe" C:\Windows\SysWOW64\fpfsdxse\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2832
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create fpfsdxse binPath= "C:\Windows\SysWOW64\fpfsdxse\tlznbaqk.exe /d\"C:\Users\Admin\AppData\Local\Temp\b598c70600e96cd21f5ee80cac5041b1_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2044
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description fpfsdxse "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2680
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start fpfsdxse
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2820
- 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:2544

C:\Windows\SysWOW64\fpfsdxse\tlznbaqk.exe
C:\Windows\SysWOW64\fpfsdxse\tlznbaqk.exe /d"C:\Users\Admin\AppData\Local\Temp\b598c70600e96cd21f5ee80cac5041b1_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2664
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Windows security bypass
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2700

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

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Credential Access

Discovery

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

C:\Users\Admin\AppData\Local\Temp\tlznbaqk.exe

Filesize
14.8MB

MD5
c804da3c79974dbce8e4edc69212bf13

SHA1
d979f10b7b6cde88fa2350ae0c333251ab93e83a

SHA256
2afbeeb0bd800c8335c2dabf1aa56c1c9088bb99501f169ef3e9ade3156a9690

SHA512
b6885e99fc1421a3ea3c3b26056eca262ba85f78b5a4a671df66e701d1d16f7604d1a9b412354ff125f0af72df65d4b19dde32bbb0e44759779759870656eaa3

Download Submit
memory/1800-7-0x0000000000400000-0x00000000008EA000-memory.dmp

Filesize
4.9MB

Download
memory/1800-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1800-2-0x00000000001B0000-0x00000000001C3000-memory.dmp

Filesize
76KB

Download
memory/1800-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1800-8-0x00000000001B0000-0x00000000001C3000-memory.dmp

Filesize
76KB

Download
memory/1800-1-0x00000000002F0000-0x00000000003F0000-memory.dmp

Filesize
1024KB

Download
memory/2664-16-0x0000000000400000-0x00000000008EA000-memory.dmp

Filesize
4.9MB

Download
memory/2700-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2700-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2700-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2700-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2700-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads