tofsee | 746661a0c4d9e790a712434dcc19f56d843dc349241238a648f4eecdcc0ce5bb

Analysis

max time kernel
147s
max time network
120s
platform
windows7_x64
resource
win7-20241023-en
resource tags

arch:x64arch:x86image:win7-20241023-enlocale:en-usos:windows7-x64system
submitted
05-01-2025 18:25

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General

Target

JaffaCakes118_b67ceb75930409aee4720c48e97df8d5.exe
Size

10.0MB
MD5

b67ceb75930409aee4720c48e97df8d5
SHA1

d6451ff4938f1fe6c19c54ba7eae3427d82747f7
SHA256

746661a0c4d9e790a712434dcc19f56d843dc349241238a648f4eecdcc0ce5bb
SHA512

9947d81cda80366be304b74bb2fca52ef078fb5ca1d0606d7ddc9b86d7723d9511b3ef5453ef65aed22b07c2258465538847fd81581b2e324000099560561475
SSDEEP

49152:urk7w7w7w7w7w7w7w7w7w7w7w7w7w7w7w7w7w7w7w7w7w7w7w7w7w7w7w7w7w7w7:u

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

43.231.4.7

lazystax.ru

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\arrkiivs = "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
788	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\arrkiivs\ImagePath = "C:\\Windows\\SysWOW64\\arrkiivs\\riqoytao.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2716	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2944	riqoytao.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2944 set thread context of 2716	2944	riqoytao.exe	44

Launches sc.exe 3 IoCs

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

pid	Process
2104	sc.exe
2896	sc.exe
2172	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	riqoytao.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_b67ceb75930409aee4720c48e97df8d5.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	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 588 wrote to memory of 2512	588	JaffaCakes118_b67ceb75930409aee4720c48e97df8d5.exe	31
PID 588 wrote to memory of 2512	588	JaffaCakes118_b67ceb75930409aee4720c48e97df8d5.exe	31
PID 588 wrote to memory of 2512	588	JaffaCakes118_b67ceb75930409aee4720c48e97df8d5.exe	31
PID 588 wrote to memory of 2512	588	JaffaCakes118_b67ceb75930409aee4720c48e97df8d5.exe	31
PID 588 wrote to memory of 2416	588	JaffaCakes118_b67ceb75930409aee4720c48e97df8d5.exe	33
PID 588 wrote to memory of 2416	588	JaffaCakes118_b67ceb75930409aee4720c48e97df8d5.exe	33
PID 588 wrote to memory of 2416	588	JaffaCakes118_b67ceb75930409aee4720c48e97df8d5.exe	33
PID 588 wrote to memory of 2416	588	JaffaCakes118_b67ceb75930409aee4720c48e97df8d5.exe	33
PID 588 wrote to memory of 2172	588	JaffaCakes118_b67ceb75930409aee4720c48e97df8d5.exe	35
PID 588 wrote to memory of 2172	588	JaffaCakes118_b67ceb75930409aee4720c48e97df8d5.exe	35
PID 588 wrote to memory of 2172	588	JaffaCakes118_b67ceb75930409aee4720c48e97df8d5.exe	35
PID 588 wrote to memory of 2172	588	JaffaCakes118_b67ceb75930409aee4720c48e97df8d5.exe	35
PID 588 wrote to memory of 2104	588	JaffaCakes118_b67ceb75930409aee4720c48e97df8d5.exe	37
PID 588 wrote to memory of 2104	588	JaffaCakes118_b67ceb75930409aee4720c48e97df8d5.exe	37
PID 588 wrote to memory of 2104	588	JaffaCakes118_b67ceb75930409aee4720c48e97df8d5.exe	37
PID 588 wrote to memory of 2104	588	JaffaCakes118_b67ceb75930409aee4720c48e97df8d5.exe	37
PID 588 wrote to memory of 2896	588	JaffaCakes118_b67ceb75930409aee4720c48e97df8d5.exe	39
PID 588 wrote to memory of 2896	588	JaffaCakes118_b67ceb75930409aee4720c48e97df8d5.exe	39
PID 588 wrote to memory of 2896	588	JaffaCakes118_b67ceb75930409aee4720c48e97df8d5.exe	39
PID 588 wrote to memory of 2896	588	JaffaCakes118_b67ceb75930409aee4720c48e97df8d5.exe	39
PID 588 wrote to memory of 788	588	JaffaCakes118_b67ceb75930409aee4720c48e97df8d5.exe	42
PID 588 wrote to memory of 788	588	JaffaCakes118_b67ceb75930409aee4720c48e97df8d5.exe	42
PID 588 wrote to memory of 788	588	JaffaCakes118_b67ceb75930409aee4720c48e97df8d5.exe	42
PID 588 wrote to memory of 788	588	JaffaCakes118_b67ceb75930409aee4720c48e97df8d5.exe	42
PID 2944 wrote to memory of 2716	2944	riqoytao.exe	44
PID 2944 wrote to memory of 2716	2944	riqoytao.exe	44
PID 2944 wrote to memory of 2716	2944	riqoytao.exe	44
PID 2944 wrote to memory of 2716	2944	riqoytao.exe	44
PID 2944 wrote to memory of 2716	2944	riqoytao.exe	44
PID 2944 wrote to memory of 2716	2944	riqoytao.exe	44

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b67ceb75930409aee4720c48e97df8d5.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b67ceb75930409aee4720c48e97df8d5.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:588
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\arrkiivs\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2512
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\riqoytao.exe" C:\Windows\SysWOW64\arrkiivs\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2416
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create arrkiivs binPath= "C:\Windows\SysWOW64\arrkiivs\riqoytao.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b67ceb75930409aee4720c48e97df8d5.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2172
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description arrkiivs "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2104
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start arrkiivs
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2896
- 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:788

C:\Windows\SysWOW64\arrkiivs\riqoytao.exe
C:\Windows\SysWOW64\arrkiivs\riqoytao.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b67ceb75930409aee4720c48e97df8d5.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2944
- 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:2716

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\riqoytao.exe

Filesize
13.3MB

MD5
713982246f154c17b80ca6211948635f

SHA1
caa9baa6acf9b8de8d6bdb1f8d04fbbf807f7c2f

SHA256
b24c2a8148aba08c84816316dd3b788f86e85cef608506987cf1eb2d7162c946

SHA512
c1eac79b99d9e3a0c6c016d2636944f6c34daec13e2f995fd68b25a8160f973b9621c26690d892f9b260c1a615328720d0c4174c22b05522eaeb29bdf34c8c79

Download Submit
memory/588-7-0x0000000000400000-0x0000000000522000-memory.dmp

Filesize
1.1MB

Download
memory/588-4-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/588-2-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/588-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/588-8-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/588-1-0x00000000005C0000-0x00000000006C0000-memory.dmp

Filesize
1024KB

Download
memory/2716-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2716-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2716-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2716-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2716-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2944-16-0x0000000000400000-0x0000000000522000-memory.dmp

Filesize
1.1MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads