tofsee | f6b4b4a24b69fc750012d93068cfe4ac74b720bcb010d4df213b9e953890380d

Analysis

max time kernel
146s
max time network
146s
platform
windows7_x64
resource
win7-20240705-en
resource tags

arch:x64arch:x86image:win7-20240705-enlocale:en-usos:windows7-x64system
submitted
18-08-2024 11:23

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General

Target

a696a05e6c1632ede1c088bc58246036_JaffaCakes118.exe
Size

11.6MB
MD5

a696a05e6c1632ede1c088bc58246036
SHA1

7decb949c9d6bb81d5a9fb961111c1ddc9c1d658
SHA256

f6b4b4a24b69fc750012d93068cfe4ac74b720bcb010d4df213b9e953890380d
SHA512

1b21477b67e42bdfe40a8a2b6df83764ba1643f745b58f02c6d417e7e91c117afe9cbbb98c6551ac2508d20080712c101ed7efd54e8bb2ab647d128b35704be8
SSDEEP

3072:nHZQIswULGiBqwZyNvXT/u22H/PaAf209fB7epgDnESzN57I6ZibkFah/NleJm/F:nHZQItUDBJiPT/u22H3s0DhcHU4l

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

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\sthueski = "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
2640	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\sthueski\ImagePath = "C:\\Windows\\SysWOW64\\sthueski\\ugnhmsfn.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
1784	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2580	ugnhmsfn.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2580 set thread context of 1784	2580	ugnhmsfn.exe	44

Launches sc.exe 3 IoCs

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

pid	Process
2964	sc.exe
2700	sc.exe
2620	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 queried	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key opened	\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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ugnhmsfn.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a696a05e6c1632ede1c088bc58246036_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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2668 wrote to memory of 2720	2668	a696a05e6c1632ede1c088bc58246036_JaffaCakes118.exe	31
PID 2668 wrote to memory of 2720	2668	a696a05e6c1632ede1c088bc58246036_JaffaCakes118.exe	31
PID 2668 wrote to memory of 2720	2668	a696a05e6c1632ede1c088bc58246036_JaffaCakes118.exe	31
PID 2668 wrote to memory of 2720	2668	a696a05e6c1632ede1c088bc58246036_JaffaCakes118.exe	31
PID 2668 wrote to memory of 2320	2668	a696a05e6c1632ede1c088bc58246036_JaffaCakes118.exe	33
PID 2668 wrote to memory of 2320	2668	a696a05e6c1632ede1c088bc58246036_JaffaCakes118.exe	33
PID 2668 wrote to memory of 2320	2668	a696a05e6c1632ede1c088bc58246036_JaffaCakes118.exe	33
PID 2668 wrote to memory of 2320	2668	a696a05e6c1632ede1c088bc58246036_JaffaCakes118.exe	33
PID 2668 wrote to memory of 2964	2668	a696a05e6c1632ede1c088bc58246036_JaffaCakes118.exe	35
PID 2668 wrote to memory of 2964	2668	a696a05e6c1632ede1c088bc58246036_JaffaCakes118.exe	35
PID 2668 wrote to memory of 2964	2668	a696a05e6c1632ede1c088bc58246036_JaffaCakes118.exe	35
PID 2668 wrote to memory of 2964	2668	a696a05e6c1632ede1c088bc58246036_JaffaCakes118.exe	35
PID 2668 wrote to memory of 2700	2668	a696a05e6c1632ede1c088bc58246036_JaffaCakes118.exe	37
PID 2668 wrote to memory of 2700	2668	a696a05e6c1632ede1c088bc58246036_JaffaCakes118.exe	37
PID 2668 wrote to memory of 2700	2668	a696a05e6c1632ede1c088bc58246036_JaffaCakes118.exe	37
PID 2668 wrote to memory of 2700	2668	a696a05e6c1632ede1c088bc58246036_JaffaCakes118.exe	37
PID 2668 wrote to memory of 2620	2668	a696a05e6c1632ede1c088bc58246036_JaffaCakes118.exe	39
PID 2668 wrote to memory of 2620	2668	a696a05e6c1632ede1c088bc58246036_JaffaCakes118.exe	39
PID 2668 wrote to memory of 2620	2668	a696a05e6c1632ede1c088bc58246036_JaffaCakes118.exe	39
PID 2668 wrote to memory of 2620	2668	a696a05e6c1632ede1c088bc58246036_JaffaCakes118.exe	39
PID 2668 wrote to memory of 2640	2668	a696a05e6c1632ede1c088bc58246036_JaffaCakes118.exe	42
PID 2668 wrote to memory of 2640	2668	a696a05e6c1632ede1c088bc58246036_JaffaCakes118.exe	42
PID 2668 wrote to memory of 2640	2668	a696a05e6c1632ede1c088bc58246036_JaffaCakes118.exe	42
PID 2668 wrote to memory of 2640	2668	a696a05e6c1632ede1c088bc58246036_JaffaCakes118.exe	42
PID 2580 wrote to memory of 1784	2580	ugnhmsfn.exe	44
PID 2580 wrote to memory of 1784	2580	ugnhmsfn.exe	44
PID 2580 wrote to memory of 1784	2580	ugnhmsfn.exe	44
PID 2580 wrote to memory of 1784	2580	ugnhmsfn.exe	44
PID 2580 wrote to memory of 1784	2580	ugnhmsfn.exe	44
PID 2580 wrote to memory of 1784	2580	ugnhmsfn.exe	44

C:\Users\Admin\AppData\Local\Temp\a696a05e6c1632ede1c088bc58246036_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\a696a05e6c1632ede1c088bc58246036_JaffaCakes118.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2668
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\sthueski\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2720
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ugnhmsfn.exe" C:\Windows\SysWOW64\sthueski\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2320
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create sthueski binPath= "C:\Windows\SysWOW64\sthueski\ugnhmsfn.exe /d\"C:\Users\Admin\AppData\Local\Temp\a696a05e6c1632ede1c088bc58246036_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2964
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description sthueski "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2700
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start sthueski
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2620
- 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:2640

C:\Windows\SysWOW64\sthueski\ugnhmsfn.exe
C:\Windows\SysWOW64\sthueski\ugnhmsfn.exe /d"C:\Users\Admin\AppData\Local\Temp\a696a05e6c1632ede1c088bc58246036_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2580
- 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:1784

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\ugnhmsfn.exe

Filesize
12.1MB

MD5
4d09fd47295f08a2be9f9240ae1ebdc9

SHA1
157502bf8e9a9fe1703ab37063fdd39b8be0fe97

SHA256
608f244959da0a9043b1684acd118e959df9da444a5c8a6b6c8f25c6bbe2118c

SHA512
fb193338c6fb79bc66093c7277ae64babb4c3579fd6df3d52b0836cd60af7fd23ba82f451ebc4b76ef28e11a057f4895598b3e5578a28432d5e2ef893b9e39f8

Download Submit
memory/1784-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1784-16-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1784-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1784-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1784-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2580-17-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/2668-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2668-1-0x0000000000570000-0x0000000000670000-memory.dmp

Filesize
1024KB

Download
memory/2668-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2668-9-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2668-8-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/2668-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads