tofsee | de6664189711f6d55dd4337ae37167a3feaef197a2a5149d17da8a0a8335f584

Analysis

max time kernel
149s
max time network
155s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
11-01-2025 03:35

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General

Target

JaffaCakes118_f5e82122b54d4d41824619e647ac946d.exe
Size

14.2MB
MD5

f5e82122b54d4d41824619e647ac946d
SHA1

2e5246a6a5053243e05fb0ec57c53c5f5af4e139
SHA256

de6664189711f6d55dd4337ae37167a3feaef197a2a5149d17da8a0a8335f584
SHA512

59606a4b3babd11a4b927f0a0e470cdb42d2b784be7f75c8a3f9f23376972aa1b98c47ff2cf7c5c30216298e59ab9fcf9681f259bb39fa931fa9c87cf0cade30
SSDEEP

98304:3RoooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooY:

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

quadoil.ru

lakeflex.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\tjbkogpk = "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
2912	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\tjbkogpk\ImagePath = "C:\\Windows\\SysWOW64\\tjbkogpk\\gcrrwdja.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2452	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
864	gcrrwdja.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 864 set thread context of 2452	864	gcrrwdja.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
2328	sc.exe
1648	sc.exe
3068	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	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	gcrrwdja.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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_f5e82122b54d4d41824619e647ac946d.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2240 wrote to memory of 2880	2240	JaffaCakes118_f5e82122b54d4d41824619e647ac946d.exe	30
PID 2240 wrote to memory of 2880	2240	JaffaCakes118_f5e82122b54d4d41824619e647ac946d.exe	30
PID 2240 wrote to memory of 2880	2240	JaffaCakes118_f5e82122b54d4d41824619e647ac946d.exe	30
PID 2240 wrote to memory of 2880	2240	JaffaCakes118_f5e82122b54d4d41824619e647ac946d.exe	30
PID 2240 wrote to memory of 2968	2240	JaffaCakes118_f5e82122b54d4d41824619e647ac946d.exe	32
PID 2240 wrote to memory of 2968	2240	JaffaCakes118_f5e82122b54d4d41824619e647ac946d.exe	32
PID 2240 wrote to memory of 2968	2240	JaffaCakes118_f5e82122b54d4d41824619e647ac946d.exe	32
PID 2240 wrote to memory of 2968	2240	JaffaCakes118_f5e82122b54d4d41824619e647ac946d.exe	32
PID 2240 wrote to memory of 2328	2240	JaffaCakes118_f5e82122b54d4d41824619e647ac946d.exe	34
PID 2240 wrote to memory of 2328	2240	JaffaCakes118_f5e82122b54d4d41824619e647ac946d.exe	34
PID 2240 wrote to memory of 2328	2240	JaffaCakes118_f5e82122b54d4d41824619e647ac946d.exe	34
PID 2240 wrote to memory of 2328	2240	JaffaCakes118_f5e82122b54d4d41824619e647ac946d.exe	34
PID 2240 wrote to memory of 1648	2240	JaffaCakes118_f5e82122b54d4d41824619e647ac946d.exe	36
PID 2240 wrote to memory of 1648	2240	JaffaCakes118_f5e82122b54d4d41824619e647ac946d.exe	36
PID 2240 wrote to memory of 1648	2240	JaffaCakes118_f5e82122b54d4d41824619e647ac946d.exe	36
PID 2240 wrote to memory of 1648	2240	JaffaCakes118_f5e82122b54d4d41824619e647ac946d.exe	36
PID 2240 wrote to memory of 3068	2240	JaffaCakes118_f5e82122b54d4d41824619e647ac946d.exe	38
PID 2240 wrote to memory of 3068	2240	JaffaCakes118_f5e82122b54d4d41824619e647ac946d.exe	38
PID 2240 wrote to memory of 3068	2240	JaffaCakes118_f5e82122b54d4d41824619e647ac946d.exe	38
PID 2240 wrote to memory of 3068	2240	JaffaCakes118_f5e82122b54d4d41824619e647ac946d.exe	38
PID 2240 wrote to memory of 2912	2240	JaffaCakes118_f5e82122b54d4d41824619e647ac946d.exe	41
PID 2240 wrote to memory of 2912	2240	JaffaCakes118_f5e82122b54d4d41824619e647ac946d.exe	41
PID 2240 wrote to memory of 2912	2240	JaffaCakes118_f5e82122b54d4d41824619e647ac946d.exe	41
PID 2240 wrote to memory of 2912	2240	JaffaCakes118_f5e82122b54d4d41824619e647ac946d.exe	41
PID 864 wrote to memory of 2452	864	gcrrwdja.exe	43
PID 864 wrote to memory of 2452	864	gcrrwdja.exe	43
PID 864 wrote to memory of 2452	864	gcrrwdja.exe	43
PID 864 wrote to memory of 2452	864	gcrrwdja.exe	43
PID 864 wrote to memory of 2452	864	gcrrwdja.exe	43
PID 864 wrote to memory of 2452	864	gcrrwdja.exe	43

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_f5e82122b54d4d41824619e647ac946d.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_f5e82122b54d4d41824619e647ac946d.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2240
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\tjbkogpk\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2880
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\gcrrwdja.exe" C:\Windows\SysWOW64\tjbkogpk\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2968
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create tjbkogpk binPath= "C:\Windows\SysWOW64\tjbkogpk\gcrrwdja.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_f5e82122b54d4d41824619e647ac946d.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2328
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description tjbkogpk "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1648
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start tjbkogpk
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3068
- 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:2912

C:\Windows\SysWOW64\tjbkogpk\gcrrwdja.exe
C:\Windows\SysWOW64\tjbkogpk\gcrrwdja.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_f5e82122b54d4d41824619e647ac946d.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:864
- 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:2452

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\gcrrwdja.exe

Filesize
11.3MB

MD5
5a07226e4e7815f4c1fe2a68165729b0

SHA1
f74a50990f2f6d6152d76b5ee013f6f050f71c89

SHA256
9c667bbfd137177199bd73e474049408d67865ad8136fda631db76f432062274

SHA512
259e1105e3caff13f92436d74afc35a7100ae28ea3dcd1e82ee1ed91ecd90353d6f9aa765d15420c837ece952b1c166b4aafd31885c7d91666386e311034287b

Download Submit
memory/864-17-0x0000000000400000-0x00000000004AC000-memory.dmp

Filesize
688KB

Download
memory/2240-8-0x0000000000400000-0x00000000004AC000-memory.dmp

Filesize
688KB

Download
memory/2240-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2240-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2240-9-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2240-1-0x00000000005E0000-0x00000000006E0000-memory.dmp

Filesize
1024KB

Download
memory/2240-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2452-14-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2452-16-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2452-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2452-11-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2452-18-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads