tofsee | 48e0ce9cfa0bd0951aaf6cff66593631c06472384d593641fe76854c7d0b3f82

Analysis

max time kernel
148s
max time network
149s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
11-01-2025 11:22

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General

Target

JaffaCakes118_ffdceebfd66c68c128cd5c7e349881b5.exe
Size

11.2MB
MD5

ffdceebfd66c68c128cd5c7e349881b5
SHA1

19e173e67dea7a78b95bce015cf4a58dc2f976c7
SHA256

48e0ce9cfa0bd0951aaf6cff66593631c06472384d593641fe76854c7d0b3f82
SHA512

be958ffd1343a1e1c06ea68a29fa6861c6a1762a74f227190c7d2597a0a64f9926527491b8a11835975d6bf7743359423c9dbf090523d9585c7d1afb623acbd8
SSDEEP

49152:wNbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb7:w

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\bibavygr = "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
2708	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\bibavygr\ImagePath = "C:\\Windows\\SysWOW64\\bibavygr\\amyggrgo.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2372	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2836	amyggrgo.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2836 set thread context of 2372	2836	amyggrgo.exe	44

Launches sc.exe 3 IoCs

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

pid	Process
924	sc.exe
1820	sc.exe
2780	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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_ffdceebfd66c68c128cd5c7e349881b5.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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	amyggrgo.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2348 wrote to memory of 2256	2348	JaffaCakes118_ffdceebfd66c68c128cd5c7e349881b5.exe	31
PID 2348 wrote to memory of 2256	2348	JaffaCakes118_ffdceebfd66c68c128cd5c7e349881b5.exe	31
PID 2348 wrote to memory of 2256	2348	JaffaCakes118_ffdceebfd66c68c128cd5c7e349881b5.exe	31
PID 2348 wrote to memory of 2256	2348	JaffaCakes118_ffdceebfd66c68c128cd5c7e349881b5.exe	31
PID 2348 wrote to memory of 2340	2348	JaffaCakes118_ffdceebfd66c68c128cd5c7e349881b5.exe	33
PID 2348 wrote to memory of 2340	2348	JaffaCakes118_ffdceebfd66c68c128cd5c7e349881b5.exe	33
PID 2348 wrote to memory of 2340	2348	JaffaCakes118_ffdceebfd66c68c128cd5c7e349881b5.exe	33
PID 2348 wrote to memory of 2340	2348	JaffaCakes118_ffdceebfd66c68c128cd5c7e349881b5.exe	33
PID 2348 wrote to memory of 924	2348	JaffaCakes118_ffdceebfd66c68c128cd5c7e349881b5.exe	35
PID 2348 wrote to memory of 924	2348	JaffaCakes118_ffdceebfd66c68c128cd5c7e349881b5.exe	35
PID 2348 wrote to memory of 924	2348	JaffaCakes118_ffdceebfd66c68c128cd5c7e349881b5.exe	35
PID 2348 wrote to memory of 924	2348	JaffaCakes118_ffdceebfd66c68c128cd5c7e349881b5.exe	35
PID 2348 wrote to memory of 1820	2348	JaffaCakes118_ffdceebfd66c68c128cd5c7e349881b5.exe	37
PID 2348 wrote to memory of 1820	2348	JaffaCakes118_ffdceebfd66c68c128cd5c7e349881b5.exe	37
PID 2348 wrote to memory of 1820	2348	JaffaCakes118_ffdceebfd66c68c128cd5c7e349881b5.exe	37
PID 2348 wrote to memory of 1820	2348	JaffaCakes118_ffdceebfd66c68c128cd5c7e349881b5.exe	37
PID 2348 wrote to memory of 2780	2348	JaffaCakes118_ffdceebfd66c68c128cd5c7e349881b5.exe	39
PID 2348 wrote to memory of 2780	2348	JaffaCakes118_ffdceebfd66c68c128cd5c7e349881b5.exe	39
PID 2348 wrote to memory of 2780	2348	JaffaCakes118_ffdceebfd66c68c128cd5c7e349881b5.exe	39
PID 2348 wrote to memory of 2780	2348	JaffaCakes118_ffdceebfd66c68c128cd5c7e349881b5.exe	39
PID 2348 wrote to memory of 2708	2348	JaffaCakes118_ffdceebfd66c68c128cd5c7e349881b5.exe	42
PID 2348 wrote to memory of 2708	2348	JaffaCakes118_ffdceebfd66c68c128cd5c7e349881b5.exe	42
PID 2348 wrote to memory of 2708	2348	JaffaCakes118_ffdceebfd66c68c128cd5c7e349881b5.exe	42
PID 2348 wrote to memory of 2708	2348	JaffaCakes118_ffdceebfd66c68c128cd5c7e349881b5.exe	42
PID 2836 wrote to memory of 2372	2836	amyggrgo.exe	44
PID 2836 wrote to memory of 2372	2836	amyggrgo.exe	44
PID 2836 wrote to memory of 2372	2836	amyggrgo.exe	44
PID 2836 wrote to memory of 2372	2836	amyggrgo.exe	44
PID 2836 wrote to memory of 2372	2836	amyggrgo.exe	44
PID 2836 wrote to memory of 2372	2836	amyggrgo.exe	44

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ffdceebfd66c68c128cd5c7e349881b5.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ffdceebfd66c68c128cd5c7e349881b5.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2348
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\bibavygr\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2256
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\amyggrgo.exe" C:\Windows\SysWOW64\bibavygr\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2340
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create bibavygr binPath= "C:\Windows\SysWOW64\bibavygr\amyggrgo.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ffdceebfd66c68c128cd5c7e349881b5.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:924
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description bibavygr "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1820
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start bibavygr
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2780
- 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:2708

C:\Windows\SysWOW64\bibavygr\amyggrgo.exe
C:\Windows\SysWOW64\bibavygr\amyggrgo.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ffdceebfd66c68c128cd5c7e349881b5.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2836
- 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:2372

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\amyggrgo.exe

Filesize
10.4MB

MD5
8d82ac7e9c5e7fa8e2ea88788b1f5273

SHA1
b7d44c1ac1de0cb67b7b4de638edc7c9dabd4e75

SHA256
dc20efd635a4a177ca34b98a927a7c9d24fd8854fda4d570d9176d29f6ef8228

SHA512
d6e4d8fe58a4f649cb6988d721841e6a980672ec4cf702182f217dbe6f7f2c685163cb9fbd855884172b77f67a3405fea1c13fe62324c2dccf131a0fa36edc6b

Download Submit
memory/2348-2-0x0000000000400000-0x0000000002B90000-memory.dmp

Filesize
39.6MB

Download
memory/2348-3-0x0000000000400000-0x0000000002B90000-memory.dmp

Filesize
39.6MB

Download
memory/2348-7-0x0000000000400000-0x0000000002B90000-memory.dmp

Filesize
39.6MB

Download
memory/2372-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2372-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2372-8-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2372-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2372-15-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2836-12-0x0000000000400000-0x0000000002B90000-memory.dmp

Filesize
39.6MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads