tofsee | abb02d0e5622d63642e0ddbfcc1788078a8618a6a7c8094956d877704cb86cac

Analysis

max time kernel
147s
max time network
146s
platform
windows7_x64
resource
win7-20241023-en
resource tags

arch:x64arch:x86image:win7-20241023-enlocale:en-usos:windows7-x64system
submitted
22-12-2024 12:08

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General

Target

JaffaCakes118_abb02d0e5622d63642e0ddbfcc1788078a8618a6a7c8094956d877704cb86cac.exe
Size

157KB
MD5

cd6e5ac889b0cc1a71bd010f1b58ec00
SHA1

ef8533ce236484acce96615d8b1dd99a387212fc
SHA256

abb02d0e5622d63642e0ddbfcc1788078a8618a6a7c8094956d877704cb86cac
SHA512

74f48a093c96c087bdde32c81cadaedd457acfa36fc17f64ff23ce0c303e83c489cce3e7610d565d2feba415638c00f451b6662cee5e2045c53d9bbed148e51b
SSDEEP

3072:GPEYIsfqkdK0Y4EdFN5uMum0X1Zy//S9H6:GsnsiJ0GKDZy//Ea

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
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\usbbsnws = "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
2884	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\usbbsnws\ImagePath = "C:\\Windows\\SysWOW64\\usbbsnws\\ykweepem.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2988	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2972	ykweepem.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2972 set thread context of 2988	2972	ykweepem.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
2568	sc.exe
2556	sc.exe
2796	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	ykweepem.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_abb02d0e5622d63642e0ddbfcc1788078a8618a6a7c8094956d877704cb86cac.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	netsh.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 2156 wrote to memory of 2660	2156	JaffaCakes118_abb02d0e5622d63642e0ddbfcc1788078a8618a6a7c8094956d877704cb86cac.exe	30
PID 2156 wrote to memory of 2660	2156	JaffaCakes118_abb02d0e5622d63642e0ddbfcc1788078a8618a6a7c8094956d877704cb86cac.exe	30
PID 2156 wrote to memory of 2660	2156	JaffaCakes118_abb02d0e5622d63642e0ddbfcc1788078a8618a6a7c8094956d877704cb86cac.exe	30
PID 2156 wrote to memory of 2660	2156	JaffaCakes118_abb02d0e5622d63642e0ddbfcc1788078a8618a6a7c8094956d877704cb86cac.exe	30
PID 2156 wrote to memory of 2056	2156	JaffaCakes118_abb02d0e5622d63642e0ddbfcc1788078a8618a6a7c8094956d877704cb86cac.exe	32
PID 2156 wrote to memory of 2056	2156	JaffaCakes118_abb02d0e5622d63642e0ddbfcc1788078a8618a6a7c8094956d877704cb86cac.exe	32
PID 2156 wrote to memory of 2056	2156	JaffaCakes118_abb02d0e5622d63642e0ddbfcc1788078a8618a6a7c8094956d877704cb86cac.exe	32
PID 2156 wrote to memory of 2056	2156	JaffaCakes118_abb02d0e5622d63642e0ddbfcc1788078a8618a6a7c8094956d877704cb86cac.exe	32
PID 2156 wrote to memory of 2568	2156	JaffaCakes118_abb02d0e5622d63642e0ddbfcc1788078a8618a6a7c8094956d877704cb86cac.exe	34
PID 2156 wrote to memory of 2568	2156	JaffaCakes118_abb02d0e5622d63642e0ddbfcc1788078a8618a6a7c8094956d877704cb86cac.exe	34
PID 2156 wrote to memory of 2568	2156	JaffaCakes118_abb02d0e5622d63642e0ddbfcc1788078a8618a6a7c8094956d877704cb86cac.exe	34
PID 2156 wrote to memory of 2568	2156	JaffaCakes118_abb02d0e5622d63642e0ddbfcc1788078a8618a6a7c8094956d877704cb86cac.exe	34
PID 2156 wrote to memory of 2556	2156	JaffaCakes118_abb02d0e5622d63642e0ddbfcc1788078a8618a6a7c8094956d877704cb86cac.exe	36
PID 2156 wrote to memory of 2556	2156	JaffaCakes118_abb02d0e5622d63642e0ddbfcc1788078a8618a6a7c8094956d877704cb86cac.exe	36
PID 2156 wrote to memory of 2556	2156	JaffaCakes118_abb02d0e5622d63642e0ddbfcc1788078a8618a6a7c8094956d877704cb86cac.exe	36
PID 2156 wrote to memory of 2556	2156	JaffaCakes118_abb02d0e5622d63642e0ddbfcc1788078a8618a6a7c8094956d877704cb86cac.exe	36
PID 2156 wrote to memory of 2796	2156	JaffaCakes118_abb02d0e5622d63642e0ddbfcc1788078a8618a6a7c8094956d877704cb86cac.exe	38
PID 2156 wrote to memory of 2796	2156	JaffaCakes118_abb02d0e5622d63642e0ddbfcc1788078a8618a6a7c8094956d877704cb86cac.exe	38
PID 2156 wrote to memory of 2796	2156	JaffaCakes118_abb02d0e5622d63642e0ddbfcc1788078a8618a6a7c8094956d877704cb86cac.exe	38
PID 2156 wrote to memory of 2796	2156	JaffaCakes118_abb02d0e5622d63642e0ddbfcc1788078a8618a6a7c8094956d877704cb86cac.exe	38
PID 2156 wrote to memory of 2884	2156	JaffaCakes118_abb02d0e5622d63642e0ddbfcc1788078a8618a6a7c8094956d877704cb86cac.exe	41
PID 2156 wrote to memory of 2884	2156	JaffaCakes118_abb02d0e5622d63642e0ddbfcc1788078a8618a6a7c8094956d877704cb86cac.exe	41
PID 2156 wrote to memory of 2884	2156	JaffaCakes118_abb02d0e5622d63642e0ddbfcc1788078a8618a6a7c8094956d877704cb86cac.exe	41
PID 2156 wrote to memory of 2884	2156	JaffaCakes118_abb02d0e5622d63642e0ddbfcc1788078a8618a6a7c8094956d877704cb86cac.exe	41
PID 2972 wrote to memory of 2988	2972	ykweepem.exe	43
PID 2972 wrote to memory of 2988	2972	ykweepem.exe	43
PID 2972 wrote to memory of 2988	2972	ykweepem.exe	43
PID 2972 wrote to memory of 2988	2972	ykweepem.exe	43
PID 2972 wrote to memory of 2988	2972	ykweepem.exe	43
PID 2972 wrote to memory of 2988	2972	ykweepem.exe	43

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_abb02d0e5622d63642e0ddbfcc1788078a8618a6a7c8094956d877704cb86cac.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_abb02d0e5622d63642e0ddbfcc1788078a8618a6a7c8094956d877704cb86cac.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2156
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\usbbsnws\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2660
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ykweepem.exe" C:\Windows\SysWOW64\usbbsnws\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2056
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create usbbsnws binPath= "C:\Windows\SysWOW64\usbbsnws\ykweepem.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_abb02d0e5622d63642e0ddbfcc1788078a8618a6a7c8094956d877704cb86cac.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2568
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description usbbsnws "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2556
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start usbbsnws
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2796
- 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:2884

C:\Windows\SysWOW64\usbbsnws\ykweepem.exe
C:\Windows\SysWOW64\usbbsnws\ykweepem.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_abb02d0e5622d63642e0ddbfcc1788078a8618a6a7c8094956d877704cb86cac.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2972
- 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:2988

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\ykweepem.exe

Filesize
12.3MB

MD5
189431921f0c34b981dc02a8ed4da4a0

SHA1
4c6d70dcc3d6e94375636db3e8587882dfb94ae1

SHA256
1a4d6bdfc64cbd7e3db1c2095ca57ea0f459de7efdad7b26368fe5dc9ba27d12

SHA512
273fccf7a61218d03f0df52282b18dcc04ec2e690b4769e96e402c0f8de83f03cee1cb202185da9d3cef66e36cce1b34cb0162721e194e6a86e986647561d3d5

Download Submit
memory/2156-1-0x00000000008F0000-0x00000000009F0000-memory.dmp

Filesize
1024KB

Download
memory/2156-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2156-2-0x0000000000240000-0x0000000000253000-memory.dmp

Filesize
76KB

Download
memory/2156-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2156-8-0x0000000000400000-0x00000000004AE000-memory.dmp

Filesize
696KB

Download
memory/2972-16-0x0000000000400000-0x00000000004AE000-memory.dmp

Filesize
696KB

Download
memory/2988-15-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2988-13-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2988-12-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2988-10-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2988-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads