tofsee | b8c7e8989b4fb3b7624a69e30f9c629e5bc4f09687f1a254d157684ce2d7c501

Analysis

max time kernel
147s
max time network
147s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
26-11-2024 15:10

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General

Target

a29fc6aeae4e6f1b7adaea5606e9b839_JaffaCakes118.exe
Size

11.0MB
MD5

a29fc6aeae4e6f1b7adaea5606e9b839
SHA1

14ff72f09589a7319189e0d6aac5f8338cf2f382
SHA256

b8c7e8989b4fb3b7624a69e30f9c629e5bc4f09687f1a254d157684ce2d7c501
SHA512

93cb8fe859e86de40681cc6205a05b6569e131fe21e2798a9aab29103c1450115a1c7323675f76ee2c18c5418e3fa9b6ea46b4a36fd24a6fc2e6c361baaa2819
SSDEEP

12288:+6oEnffffffffffffffffffffffffffffffffffffffffffffffffffffffffff/:+6

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\deexplwr = "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
2780	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\deexplwr\ImagePath = "C:\\Windows\\SysWOW64\\deexplwr\\otphfiu.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2656	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2820	otphfiu.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2820 set thread context of 2656	2820	otphfiu.exe	44

Launches sc.exe 3 IoCs

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

pid	Process
2752	sc.exe
2228	sc.exe
2356	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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a29fc6aeae4e6f1b7adaea5606e9b839_JaffaCakes118.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	otphfiu.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1940 wrote to memory of 2624	1940	a29fc6aeae4e6f1b7adaea5606e9b839_JaffaCakes118.exe	31
PID 1940 wrote to memory of 2624	1940	a29fc6aeae4e6f1b7adaea5606e9b839_JaffaCakes118.exe	31
PID 1940 wrote to memory of 2624	1940	a29fc6aeae4e6f1b7adaea5606e9b839_JaffaCakes118.exe	31
PID 1940 wrote to memory of 2624	1940	a29fc6aeae4e6f1b7adaea5606e9b839_JaffaCakes118.exe	31
PID 1940 wrote to memory of 2996	1940	a29fc6aeae4e6f1b7adaea5606e9b839_JaffaCakes118.exe	33
PID 1940 wrote to memory of 2996	1940	a29fc6aeae4e6f1b7adaea5606e9b839_JaffaCakes118.exe	33
PID 1940 wrote to memory of 2996	1940	a29fc6aeae4e6f1b7adaea5606e9b839_JaffaCakes118.exe	33
PID 1940 wrote to memory of 2996	1940	a29fc6aeae4e6f1b7adaea5606e9b839_JaffaCakes118.exe	33
PID 1940 wrote to memory of 2356	1940	a29fc6aeae4e6f1b7adaea5606e9b839_JaffaCakes118.exe	35
PID 1940 wrote to memory of 2356	1940	a29fc6aeae4e6f1b7adaea5606e9b839_JaffaCakes118.exe	35
PID 1940 wrote to memory of 2356	1940	a29fc6aeae4e6f1b7adaea5606e9b839_JaffaCakes118.exe	35
PID 1940 wrote to memory of 2356	1940	a29fc6aeae4e6f1b7adaea5606e9b839_JaffaCakes118.exe	35
PID 1940 wrote to memory of 2752	1940	a29fc6aeae4e6f1b7adaea5606e9b839_JaffaCakes118.exe	37
PID 1940 wrote to memory of 2752	1940	a29fc6aeae4e6f1b7adaea5606e9b839_JaffaCakes118.exe	37
PID 1940 wrote to memory of 2752	1940	a29fc6aeae4e6f1b7adaea5606e9b839_JaffaCakes118.exe	37
PID 1940 wrote to memory of 2752	1940	a29fc6aeae4e6f1b7adaea5606e9b839_JaffaCakes118.exe	37
PID 1940 wrote to memory of 2228	1940	a29fc6aeae4e6f1b7adaea5606e9b839_JaffaCakes118.exe	39
PID 1940 wrote to memory of 2228	1940	a29fc6aeae4e6f1b7adaea5606e9b839_JaffaCakes118.exe	39
PID 1940 wrote to memory of 2228	1940	a29fc6aeae4e6f1b7adaea5606e9b839_JaffaCakes118.exe	39
PID 1940 wrote to memory of 2228	1940	a29fc6aeae4e6f1b7adaea5606e9b839_JaffaCakes118.exe	39
PID 1940 wrote to memory of 2780	1940	a29fc6aeae4e6f1b7adaea5606e9b839_JaffaCakes118.exe	42
PID 1940 wrote to memory of 2780	1940	a29fc6aeae4e6f1b7adaea5606e9b839_JaffaCakes118.exe	42
PID 1940 wrote to memory of 2780	1940	a29fc6aeae4e6f1b7adaea5606e9b839_JaffaCakes118.exe	42
PID 1940 wrote to memory of 2780	1940	a29fc6aeae4e6f1b7adaea5606e9b839_JaffaCakes118.exe	42
PID 2820 wrote to memory of 2656	2820	otphfiu.exe	44
PID 2820 wrote to memory of 2656	2820	otphfiu.exe	44
PID 2820 wrote to memory of 2656	2820	otphfiu.exe	44
PID 2820 wrote to memory of 2656	2820	otphfiu.exe	44
PID 2820 wrote to memory of 2656	2820	otphfiu.exe	44
PID 2820 wrote to memory of 2656	2820	otphfiu.exe	44

C:\Users\Admin\AppData\Local\Temp\a29fc6aeae4e6f1b7adaea5606e9b839_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\a29fc6aeae4e6f1b7adaea5606e9b839_JaffaCakes118.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1940
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\deexplwr\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2624
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\otphfiu.exe" C:\Windows\SysWOW64\deexplwr\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2996
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create deexplwr binPath= "C:\Windows\SysWOW64\deexplwr\otphfiu.exe /d\"C:\Users\Admin\AppData\Local\Temp\a29fc6aeae4e6f1b7adaea5606e9b839_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2356
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description deexplwr "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2752
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start deexplwr
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2228
- 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:2780

C:\Windows\SysWOW64\deexplwr\otphfiu.exe
C:\Windows\SysWOW64\deexplwr\otphfiu.exe /d"C:\Users\Admin\AppData\Local\Temp\a29fc6aeae4e6f1b7adaea5606e9b839_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2820
- 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:2656

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\otphfiu.exe

Filesize
14.9MB

MD5
268b9e7bc03017ed9366da02b032a051

SHA1
75bd712a31d2797ef572a73cbf29e81da100cd79

SHA256
8565d66d0317b9ff1f4e166e2c084acaad1c13a87e67e533c50cb53cd0623cf0

SHA512
d76da9405b770082bc6e98af84172bd02c8363ac525e321dfa72d776d6532df3f857a8b29c3bf4a7ec2b0f4fc006b38d580a3d940a5b4efd40e1f396d82e2f76

Download Submit
memory/1940-8-0x0000000000400000-0x00000000004AD000-memory.dmp

Filesize
692KB

Download
memory/1940-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1940-2-0x00000000003C0000-0x00000000003D3000-memory.dmp

Filesize
76KB

Download
memory/1940-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1940-9-0x00000000003C0000-0x00000000003D3000-memory.dmp

Filesize
76KB

Download
memory/1940-1-0x0000000000250000-0x0000000000350000-memory.dmp

Filesize
1024KB

Download
memory/2656-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2656-16-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2656-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2656-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2656-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2820-17-0x0000000000400000-0x00000000004AD000-memory.dmp

Filesize
692KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads