tofsee | eb4f398465dd5dac1636447a265f692a73e3be0bc91f94df72ddd123cae98d84

Analysis

max time kernel
145s
max time network
146s
platform
windows7_x64
resource
win7-20241023-en
resource tags

arch:x64arch:x86image:win7-20241023-enlocale:en-usos:windows7-x64system
submitted
05-12-2024 14:54

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General

Target

c83d89624f4b413b33a8535e942fb543_JaffaCakes118.exe
Size

12.8MB
MD5

c83d89624f4b413b33a8535e942fb543
SHA1

2644db3a8706369e8cadbde5480f9252d25ddbbe
SHA256

eb4f398465dd5dac1636447a265f692a73e3be0bc91f94df72ddd123cae98d84
SHA512

8f1c620a475f490ce2257cab8d2f411c6d28546f310ba9a20fe1351d2a8085eea79cf9839809332070731695a7bd6de206ef2b456b3cc8268b243647fe66c7b3
SSDEEP

49152:V2mNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNd:Q

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\rrkfyavh = "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
2848	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\rrkfyavh\ImagePath = "C:\\Windows\\SysWOW64\\rrkfyavh\\dtttizfx.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2796	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2580	dtttizfx.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2580 set thread context of 2796	2580	dtttizfx.exe	44

Launches sc.exe 3 IoCs

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

pid	Process
2056	sc.exe
2464	sc.exe
572	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 value enumerated	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key queried	\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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	c83d89624f4b413b33a8535e942fb543_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	dtttizfx.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 692 wrote to memory of 2040	692	c83d89624f4b413b33a8535e942fb543_JaffaCakes118.exe	30
PID 692 wrote to memory of 2040	692	c83d89624f4b413b33a8535e942fb543_JaffaCakes118.exe	30
PID 692 wrote to memory of 2040	692	c83d89624f4b413b33a8535e942fb543_JaffaCakes118.exe	30
PID 692 wrote to memory of 2040	692	c83d89624f4b413b33a8535e942fb543_JaffaCakes118.exe	30
PID 692 wrote to memory of 1944	692	c83d89624f4b413b33a8535e942fb543_JaffaCakes118.exe	32
PID 692 wrote to memory of 1944	692	c83d89624f4b413b33a8535e942fb543_JaffaCakes118.exe	32
PID 692 wrote to memory of 1944	692	c83d89624f4b413b33a8535e942fb543_JaffaCakes118.exe	32
PID 692 wrote to memory of 1944	692	c83d89624f4b413b33a8535e942fb543_JaffaCakes118.exe	32
PID 692 wrote to memory of 2056	692	c83d89624f4b413b33a8535e942fb543_JaffaCakes118.exe	34
PID 692 wrote to memory of 2056	692	c83d89624f4b413b33a8535e942fb543_JaffaCakes118.exe	34
PID 692 wrote to memory of 2056	692	c83d89624f4b413b33a8535e942fb543_JaffaCakes118.exe	34
PID 692 wrote to memory of 2056	692	c83d89624f4b413b33a8535e942fb543_JaffaCakes118.exe	34
PID 692 wrote to memory of 2464	692	c83d89624f4b413b33a8535e942fb543_JaffaCakes118.exe	36
PID 692 wrote to memory of 2464	692	c83d89624f4b413b33a8535e942fb543_JaffaCakes118.exe	36
PID 692 wrote to memory of 2464	692	c83d89624f4b413b33a8535e942fb543_JaffaCakes118.exe	36
PID 692 wrote to memory of 2464	692	c83d89624f4b413b33a8535e942fb543_JaffaCakes118.exe	36
PID 692 wrote to memory of 572	692	c83d89624f4b413b33a8535e942fb543_JaffaCakes118.exe	39
PID 692 wrote to memory of 572	692	c83d89624f4b413b33a8535e942fb543_JaffaCakes118.exe	39
PID 692 wrote to memory of 572	692	c83d89624f4b413b33a8535e942fb543_JaffaCakes118.exe	39
PID 692 wrote to memory of 572	692	c83d89624f4b413b33a8535e942fb543_JaffaCakes118.exe	39
PID 692 wrote to memory of 2848	692	c83d89624f4b413b33a8535e942fb543_JaffaCakes118.exe	42
PID 692 wrote to memory of 2848	692	c83d89624f4b413b33a8535e942fb543_JaffaCakes118.exe	42
PID 692 wrote to memory of 2848	692	c83d89624f4b413b33a8535e942fb543_JaffaCakes118.exe	42
PID 692 wrote to memory of 2848	692	c83d89624f4b413b33a8535e942fb543_JaffaCakes118.exe	42
PID 2580 wrote to memory of 2796	2580	dtttizfx.exe	44
PID 2580 wrote to memory of 2796	2580	dtttizfx.exe	44
PID 2580 wrote to memory of 2796	2580	dtttizfx.exe	44
PID 2580 wrote to memory of 2796	2580	dtttizfx.exe	44
PID 2580 wrote to memory of 2796	2580	dtttizfx.exe	44
PID 2580 wrote to memory of 2796	2580	dtttizfx.exe	44

C:\Users\Admin\AppData\Local\Temp\c83d89624f4b413b33a8535e942fb543_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\c83d89624f4b413b33a8535e942fb543_JaffaCakes118.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:692
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\rrkfyavh\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2040
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\dtttizfx.exe" C:\Windows\SysWOW64\rrkfyavh\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1944
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create rrkfyavh binPath= "C:\Windows\SysWOW64\rrkfyavh\dtttizfx.exe /d\"C:\Users\Admin\AppData\Local\Temp\c83d89624f4b413b33a8535e942fb543_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2056
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description rrkfyavh "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2464
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start rrkfyavh
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:572
- 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:2848

C:\Windows\SysWOW64\rrkfyavh\dtttizfx.exe
C:\Windows\SysWOW64\rrkfyavh\dtttizfx.exe /d"C:\Users\Admin\AppData\Local\Temp\c83d89624f4b413b33a8535e942fb543_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:2796

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\dtttizfx.exe

Filesize
10.7MB

MD5
02d1cb0dfe2d6393944af3eb692da403

SHA1
577151dc4ca2fd642675fa0aef23eba42102d7a4

SHA256
f7e489e3120d169b70f78f5dd50356a68ca4f94dbad714ff671a17687312454b

SHA512
36010ac0639d51da2bc81f160d80f4fc25736e0dfa037040015cdf209db21eb4b3183379fee2b9704bb79462136cc31cd941af7713b5e9304872a4819b2be8b3

Download Submit
memory/692-8-0x0000000000400000-0x000000000086B000-memory.dmp

Filesize
4.4MB

Download
memory/692-4-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/692-2-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/692-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/692-9-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/692-1-0x0000000000A10000-0x0000000000B10000-memory.dmp

Filesize
1024KB

Download
memory/2580-16-0x0000000000400000-0x000000000086B000-memory.dmp

Filesize
4.4MB

Download
memory/2796-11-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/2796-14-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/2796-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2796-17-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/2796-18-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads