tofsee | f58398f5c6ac87ce8bce4f21bda2ef0a74007d18a9f630703071504503166f0e

Analysis

max time kernel
146s
max time network
146s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
31-12-2024 09:15

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General

Target

JaffaCakes118_10b4687aa42e274c8cf61d57d9933fb7.exe
Size

13.7MB
MD5

10b4687aa42e274c8cf61d57d9933fb7
SHA1

b263e17a45590b21cc53599d4d6838222d266b44
SHA256

f58398f5c6ac87ce8bce4f21bda2ef0a74007d18a9f630703071504503166f0e
SHA512

b3b2c3bd3e0c9917fb928bbb4600ebe677543c38b2961618f4c8f67908e649a03fbda4a06164697a8a7f18d197cceaef54cec6517e3bddfec7a9b44e9eb63bfa
SSDEEP

98304:4EEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE0:

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\ttbzrvzk = "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
1276	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\ttbzrvzk\ImagePath = "C:\\Windows\\SysWOW64\\ttbzrvzk\\dknlmmcq.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2340	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2416	dknlmmcq.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2416 set thread context of 2340	2416	dknlmmcq.exe	41

Launches sc.exe 3 IoCs

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

pid	Process
2932	sc.exe
1660	sc.exe
2964	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	JaffaCakes118_10b4687aa42e274c8cf61d57d9933fb7.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	dknlmmcq.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	svchost.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1860 wrote to memory of 2188	1860	JaffaCakes118_10b4687aa42e274c8cf61d57d9933fb7.exe	28
PID 1860 wrote to memory of 2188	1860	JaffaCakes118_10b4687aa42e274c8cf61d57d9933fb7.exe	28
PID 1860 wrote to memory of 2188	1860	JaffaCakes118_10b4687aa42e274c8cf61d57d9933fb7.exe	28
PID 1860 wrote to memory of 2188	1860	JaffaCakes118_10b4687aa42e274c8cf61d57d9933fb7.exe	28
PID 1860 wrote to memory of 1988	1860	JaffaCakes118_10b4687aa42e274c8cf61d57d9933fb7.exe	30
PID 1860 wrote to memory of 1988	1860	JaffaCakes118_10b4687aa42e274c8cf61d57d9933fb7.exe	30
PID 1860 wrote to memory of 1988	1860	JaffaCakes118_10b4687aa42e274c8cf61d57d9933fb7.exe	30
PID 1860 wrote to memory of 1988	1860	JaffaCakes118_10b4687aa42e274c8cf61d57d9933fb7.exe	30
PID 1860 wrote to memory of 1660	1860	JaffaCakes118_10b4687aa42e274c8cf61d57d9933fb7.exe	32
PID 1860 wrote to memory of 1660	1860	JaffaCakes118_10b4687aa42e274c8cf61d57d9933fb7.exe	32
PID 1860 wrote to memory of 1660	1860	JaffaCakes118_10b4687aa42e274c8cf61d57d9933fb7.exe	32
PID 1860 wrote to memory of 1660	1860	JaffaCakes118_10b4687aa42e274c8cf61d57d9933fb7.exe	32
PID 1860 wrote to memory of 2964	1860	JaffaCakes118_10b4687aa42e274c8cf61d57d9933fb7.exe	34
PID 1860 wrote to memory of 2964	1860	JaffaCakes118_10b4687aa42e274c8cf61d57d9933fb7.exe	34
PID 1860 wrote to memory of 2964	1860	JaffaCakes118_10b4687aa42e274c8cf61d57d9933fb7.exe	34
PID 1860 wrote to memory of 2964	1860	JaffaCakes118_10b4687aa42e274c8cf61d57d9933fb7.exe	34
PID 1860 wrote to memory of 2932	1860	JaffaCakes118_10b4687aa42e274c8cf61d57d9933fb7.exe	36
PID 1860 wrote to memory of 2932	1860	JaffaCakes118_10b4687aa42e274c8cf61d57d9933fb7.exe	36
PID 1860 wrote to memory of 2932	1860	JaffaCakes118_10b4687aa42e274c8cf61d57d9933fb7.exe	36
PID 1860 wrote to memory of 2932	1860	JaffaCakes118_10b4687aa42e274c8cf61d57d9933fb7.exe	36
PID 1860 wrote to memory of 1276	1860	JaffaCakes118_10b4687aa42e274c8cf61d57d9933fb7.exe	39
PID 1860 wrote to memory of 1276	1860	JaffaCakes118_10b4687aa42e274c8cf61d57d9933fb7.exe	39
PID 1860 wrote to memory of 1276	1860	JaffaCakes118_10b4687aa42e274c8cf61d57d9933fb7.exe	39
PID 1860 wrote to memory of 1276	1860	JaffaCakes118_10b4687aa42e274c8cf61d57d9933fb7.exe	39
PID 2416 wrote to memory of 2340	2416	dknlmmcq.exe	41
PID 2416 wrote to memory of 2340	2416	dknlmmcq.exe	41
PID 2416 wrote to memory of 2340	2416	dknlmmcq.exe	41
PID 2416 wrote to memory of 2340	2416	dknlmmcq.exe	41
PID 2416 wrote to memory of 2340	2416	dknlmmcq.exe	41
PID 2416 wrote to memory of 2340	2416	dknlmmcq.exe	41

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_10b4687aa42e274c8cf61d57d9933fb7.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_10b4687aa42e274c8cf61d57d9933fb7.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1860
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ttbzrvzk\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2188
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\dknlmmcq.exe" C:\Windows\SysWOW64\ttbzrvzk\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1988
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create ttbzrvzk binPath= "C:\Windows\SysWOW64\ttbzrvzk\dknlmmcq.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_10b4687aa42e274c8cf61d57d9933fb7.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1660
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description ttbzrvzk "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2964
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start ttbzrvzk
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2932
- 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:1276

C:\Windows\SysWOW64\ttbzrvzk\dknlmmcq.exe
C:\Windows\SysWOW64\ttbzrvzk\dknlmmcq.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_10b4687aa42e274c8cf61d57d9933fb7.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2416
- 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:2340

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\dknlmmcq.exe

Filesize
14.4MB

MD5
4b73b59e79a1d374dd4a76dadb9c3ece

SHA1
ae13c5ad70bde80541877420d90459183f13ff7d

SHA256
65135225b1664d2a4ee216c794d42621135943cb74dc911e5c2b84d88380fdee

SHA512
63edb10e75adc35202d948afd16632afc27dfcf9f796f38b1966a673ed8494de39849ce48ed1c70397a1d2512278dca5529c44446eb9964fef93e50c869893ff

Download Submit
memory/1860-8-0x0000000000400000-0x0000000000448000-memory.dmp

Filesize
288KB

Download
memory/1860-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1860-2-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/1860-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1860-9-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/1860-1-0x00000000005C0000-0x00000000006C0000-memory.dmp

Filesize
1024KB

Download
memory/2340-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2340-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2340-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2340-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2340-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2416-16-0x0000000000400000-0x0000000000448000-memory.dmp

Filesize
288KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads