tofsee | b979755ac86ec02de0068d1d873064ad9c6d73d5ae0ad5f70ebf48d56dfb3a59

Analysis

max time kernel
145s
max time network
145s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
23-12-2024 17:13

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General

Target

JaffaCakes118_b979755ac86ec02de0068d1d873064ad9c6d73d5ae0ad5f70ebf48d56dfb3a59.exe
Size

286KB
MD5

fb73d870e424a23443e73e0593b0ec46
SHA1

17f76ce7d91f19c6030a1d457c72c7aba219d89b
SHA256

b979755ac86ec02de0068d1d873064ad9c6d73d5ae0ad5f70ebf48d56dfb3a59
SHA512

1e28f84c5b9d3a577416194f0d7c7cdcd8915a686e882df1e5261cd11d041865a05b44fe6d3a3c4ea4fa285f548ab88bdf82039cd1c41d799b871414d768f755
SSDEEP

3072:5At7kEc9xTQyjv0TblKBF05HOu0ay/M3V9h2HxetxaA1j/dVcuBUA4VFrm5yUH:5s7wvQyjvelKbyH8UEHxEx53cuVQG

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\hejpwpvu = "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
2900	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\hejpwpvu\ImagePath = "C:\\Windows\\SysWOW64\\hejpwpvu\\bgcusvh.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2144	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2672	bgcusvh.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2672 set thread context of 2144	2672	bgcusvh.exe	44

Launches sc.exe 3 IoCs

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

pid	Process
2480	sc.exe
2660	sc.exe
2724	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	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	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	bgcusvh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_b979755ac86ec02de0068d1d873064ad9c6d73d5ae0ad5f70ebf48d56dfb3a59.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2324 wrote to memory of 1736	2324	JaffaCakes118_b979755ac86ec02de0068d1d873064ad9c6d73d5ae0ad5f70ebf48d56dfb3a59.exe	31
PID 2324 wrote to memory of 1736	2324	JaffaCakes118_b979755ac86ec02de0068d1d873064ad9c6d73d5ae0ad5f70ebf48d56dfb3a59.exe	31
PID 2324 wrote to memory of 1736	2324	JaffaCakes118_b979755ac86ec02de0068d1d873064ad9c6d73d5ae0ad5f70ebf48d56dfb3a59.exe	31
PID 2324 wrote to memory of 1736	2324	JaffaCakes118_b979755ac86ec02de0068d1d873064ad9c6d73d5ae0ad5f70ebf48d56dfb3a59.exe	31
PID 2324 wrote to memory of 1256	2324	JaffaCakes118_b979755ac86ec02de0068d1d873064ad9c6d73d5ae0ad5f70ebf48d56dfb3a59.exe	33
PID 2324 wrote to memory of 1256	2324	JaffaCakes118_b979755ac86ec02de0068d1d873064ad9c6d73d5ae0ad5f70ebf48d56dfb3a59.exe	33
PID 2324 wrote to memory of 1256	2324	JaffaCakes118_b979755ac86ec02de0068d1d873064ad9c6d73d5ae0ad5f70ebf48d56dfb3a59.exe	33
PID 2324 wrote to memory of 1256	2324	JaffaCakes118_b979755ac86ec02de0068d1d873064ad9c6d73d5ae0ad5f70ebf48d56dfb3a59.exe	33
PID 2324 wrote to memory of 2480	2324	JaffaCakes118_b979755ac86ec02de0068d1d873064ad9c6d73d5ae0ad5f70ebf48d56dfb3a59.exe	35
PID 2324 wrote to memory of 2480	2324	JaffaCakes118_b979755ac86ec02de0068d1d873064ad9c6d73d5ae0ad5f70ebf48d56dfb3a59.exe	35
PID 2324 wrote to memory of 2480	2324	JaffaCakes118_b979755ac86ec02de0068d1d873064ad9c6d73d5ae0ad5f70ebf48d56dfb3a59.exe	35
PID 2324 wrote to memory of 2480	2324	JaffaCakes118_b979755ac86ec02de0068d1d873064ad9c6d73d5ae0ad5f70ebf48d56dfb3a59.exe	35
PID 2324 wrote to memory of 2660	2324	JaffaCakes118_b979755ac86ec02de0068d1d873064ad9c6d73d5ae0ad5f70ebf48d56dfb3a59.exe	37
PID 2324 wrote to memory of 2660	2324	JaffaCakes118_b979755ac86ec02de0068d1d873064ad9c6d73d5ae0ad5f70ebf48d56dfb3a59.exe	37
PID 2324 wrote to memory of 2660	2324	JaffaCakes118_b979755ac86ec02de0068d1d873064ad9c6d73d5ae0ad5f70ebf48d56dfb3a59.exe	37
PID 2324 wrote to memory of 2660	2324	JaffaCakes118_b979755ac86ec02de0068d1d873064ad9c6d73d5ae0ad5f70ebf48d56dfb3a59.exe	37
PID 2324 wrote to memory of 2724	2324	JaffaCakes118_b979755ac86ec02de0068d1d873064ad9c6d73d5ae0ad5f70ebf48d56dfb3a59.exe	39
PID 2324 wrote to memory of 2724	2324	JaffaCakes118_b979755ac86ec02de0068d1d873064ad9c6d73d5ae0ad5f70ebf48d56dfb3a59.exe	39
PID 2324 wrote to memory of 2724	2324	JaffaCakes118_b979755ac86ec02de0068d1d873064ad9c6d73d5ae0ad5f70ebf48d56dfb3a59.exe	39
PID 2324 wrote to memory of 2724	2324	JaffaCakes118_b979755ac86ec02de0068d1d873064ad9c6d73d5ae0ad5f70ebf48d56dfb3a59.exe	39
PID 2324 wrote to memory of 2900	2324	JaffaCakes118_b979755ac86ec02de0068d1d873064ad9c6d73d5ae0ad5f70ebf48d56dfb3a59.exe	42
PID 2324 wrote to memory of 2900	2324	JaffaCakes118_b979755ac86ec02de0068d1d873064ad9c6d73d5ae0ad5f70ebf48d56dfb3a59.exe	42
PID 2324 wrote to memory of 2900	2324	JaffaCakes118_b979755ac86ec02de0068d1d873064ad9c6d73d5ae0ad5f70ebf48d56dfb3a59.exe	42
PID 2324 wrote to memory of 2900	2324	JaffaCakes118_b979755ac86ec02de0068d1d873064ad9c6d73d5ae0ad5f70ebf48d56dfb3a59.exe	42
PID 2672 wrote to memory of 2144	2672	bgcusvh.exe	44
PID 2672 wrote to memory of 2144	2672	bgcusvh.exe	44
PID 2672 wrote to memory of 2144	2672	bgcusvh.exe	44
PID 2672 wrote to memory of 2144	2672	bgcusvh.exe	44
PID 2672 wrote to memory of 2144	2672	bgcusvh.exe	44
PID 2672 wrote to memory of 2144	2672	bgcusvh.exe	44

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b979755ac86ec02de0068d1d873064ad9c6d73d5ae0ad5f70ebf48d56dfb3a59.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b979755ac86ec02de0068d1d873064ad9c6d73d5ae0ad5f70ebf48d56dfb3a59.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2324
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\hejpwpvu\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1736
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\bgcusvh.exe" C:\Windows\SysWOW64\hejpwpvu\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1256
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create hejpwpvu binPath= "C:\Windows\SysWOW64\hejpwpvu\bgcusvh.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b979755ac86ec02de0068d1d873064ad9c6d73d5ae0ad5f70ebf48d56dfb3a59.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2480
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description hejpwpvu "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2660
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start hejpwpvu
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2724
- 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:2900

C:\Windows\SysWOW64\hejpwpvu\bgcusvh.exe
C:\Windows\SysWOW64\hejpwpvu\bgcusvh.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b979755ac86ec02de0068d1d873064ad9c6d73d5ae0ad5f70ebf48d56dfb3a59.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2672
- 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:2144

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\bgcusvh.exe

Filesize
13.6MB

MD5
aabcbf77200c459ac72befaab4dca5a5

SHA1
3a2122bf3f9595e312a8a7e31da00173a4929bc2

SHA256
2da6f9f68f5c0ee128b18a8ee5b02e8d35117c623c3351cc9beb1781683f452d

SHA512
29d9b3174f9c222f560416e2f063c84b0939617acf6720a83c44ccfd46612c03a63df36316e3bdcefafa635a1ecae5367baa817ebb07f182eb074df1d0c1b483

Download Submit
memory/2144-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2144-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2144-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2144-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2144-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2324-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2324-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2324-8-0x0000000000400000-0x0000000002B90000-memory.dmp

Filesize
39.6MB

Download
memory/2324-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2324-9-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2324-1-0x0000000002D50000-0x0000000002E50000-memory.dmp

Filesize
1024KB

Download
memory/2672-16-0x0000000000400000-0x0000000002B90000-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