tofsee | a53984677b2902d3935ac26b6f742969a2c686d4f98d7246eade0aa6e0ed14c5

General

Target

38c2e6e7c809096dcb36e8ea89d9009c_JaffaCakes118.exe
Size

13.5MB
MD5

38c2e6e7c809096dcb36e8ea89d9009c
SHA1

42344f575410699204c587a55a9b05f604e54275
SHA256

a53984677b2902d3935ac26b6f742969a2c686d4f98d7246eade0aa6e0ed14c5
SHA512

aee6c803d1cf73370eb66c109e5b359d6cf0aa0fade0b76243537d7e711ae2b6b6028855b7b675524670c9c9ce6280d26c08055d48a6bb82896fbf062cc07a21
SSDEEP

98304:3G1QbQkIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIn:22b

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

43.231.4.7

lazystax.ru

Signatures

Tofsee
Backdoor/botnet which carries out malicious activities based on commands from a C2 server.
trojan tofsee
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

Processes:

netsh.exe

pid process

4864 netsh.exe

pid	process
4864	netsh.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\mnxtvmcd\ImagePath = "C:\\Windows\\SysWOW64\\mnxtvmcd\\ihxtawb.exe"	svchost.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

38c2e6e7c809096dcb36e8ea89d9009c_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	38c2e6e7c809096dcb36e8ea89d9009c_JaffaCakes118.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

1072 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

ihxtawb.exe

pid process

652 ihxtawb.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

ihxtawb.exe

description pid process target process

PID 652 set thread context of 1072 652 ihxtawb.exe svchost.exe
Launches sc.exe 3 IoCs
Sc.exe is a Windows utlilty to control services on the system.

Processes:

sc.exesc.exesc.exe

pid process

1844 sc.exe
2372 sc.exe
1668 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
1072	svchost.exe

pid	process
652	ihxtawb.exe

description	pid	process	target process
PID 652 set thread context of 1072	652	ihxtawb.exe	svchost.exe

pid	process
1844	sc.exe
2372	sc.exe
1668	sc.exe

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

Processes:

netsh.exe

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

Program crash 2 IoCs

Processes:

WerFault.exeWerFault.exe

pid pid_target process target process

2716 464 WerFault.exe 38c2e6e7c809096dcb36e8ea89d9009c_JaffaCakes118.exe
4836 652 WerFault.exe ihxtawb.exe

pid	pid_target	process	target process
2716	464	WerFault.exe	38c2e6e7c809096dcb36e8ea89d9009c_JaffaCakes118.exe
4836	652	WerFault.exe	ihxtawb.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

Processes:

ihxtawb.exesc.exesc.execmd.exesc.exenetsh.exesvchost.exe38c2e6e7c809096dcb36e8ea89d9009c_JaffaCakes118.execmd.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ihxtawb.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	cmd.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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	38c2e6e7c809096dcb36e8ea89d9009c_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

38c2e6e7c809096dcb36e8ea89d9009c_JaffaCakes118.exeihxtawb.exe

description	pid	process	target process
PID 464 wrote to memory of 1948	464	38c2e6e7c809096dcb36e8ea89d9009c_JaffaCakes118.exe	cmd.exe
PID 464 wrote to memory of 1948	464	38c2e6e7c809096dcb36e8ea89d9009c_JaffaCakes118.exe	cmd.exe
PID 464 wrote to memory of 1948	464	38c2e6e7c809096dcb36e8ea89d9009c_JaffaCakes118.exe	cmd.exe
PID 464 wrote to memory of 2156	464	38c2e6e7c809096dcb36e8ea89d9009c_JaffaCakes118.exe	cmd.exe
PID 464 wrote to memory of 2156	464	38c2e6e7c809096dcb36e8ea89d9009c_JaffaCakes118.exe	cmd.exe
PID 464 wrote to memory of 2156	464	38c2e6e7c809096dcb36e8ea89d9009c_JaffaCakes118.exe	cmd.exe
PID 464 wrote to memory of 2372	464	38c2e6e7c809096dcb36e8ea89d9009c_JaffaCakes118.exe	sc.exe
PID 464 wrote to memory of 2372	464	38c2e6e7c809096dcb36e8ea89d9009c_JaffaCakes118.exe	sc.exe
PID 464 wrote to memory of 2372	464	38c2e6e7c809096dcb36e8ea89d9009c_JaffaCakes118.exe	sc.exe
PID 464 wrote to memory of 1668	464	38c2e6e7c809096dcb36e8ea89d9009c_JaffaCakes118.exe	sc.exe
PID 464 wrote to memory of 1668	464	38c2e6e7c809096dcb36e8ea89d9009c_JaffaCakes118.exe	sc.exe
PID 464 wrote to memory of 1668	464	38c2e6e7c809096dcb36e8ea89d9009c_JaffaCakes118.exe	sc.exe
PID 464 wrote to memory of 1844	464	38c2e6e7c809096dcb36e8ea89d9009c_JaffaCakes118.exe	sc.exe
PID 464 wrote to memory of 1844	464	38c2e6e7c809096dcb36e8ea89d9009c_JaffaCakes118.exe	sc.exe
PID 464 wrote to memory of 1844	464	38c2e6e7c809096dcb36e8ea89d9009c_JaffaCakes118.exe	sc.exe
PID 464 wrote to memory of 4864	464	38c2e6e7c809096dcb36e8ea89d9009c_JaffaCakes118.exe	netsh.exe
PID 464 wrote to memory of 4864	464	38c2e6e7c809096dcb36e8ea89d9009c_JaffaCakes118.exe	netsh.exe
PID 464 wrote to memory of 4864	464	38c2e6e7c809096dcb36e8ea89d9009c_JaffaCakes118.exe	netsh.exe
PID 652 wrote to memory of 1072	652	ihxtawb.exe	svchost.exe
PID 652 wrote to memory of 1072	652	ihxtawb.exe	svchost.exe
PID 652 wrote to memory of 1072	652	ihxtawb.exe	svchost.exe
PID 652 wrote to memory of 1072	652	ihxtawb.exe	svchost.exe
PID 652 wrote to memory of 1072	652	ihxtawb.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\38c2e6e7c809096dcb36e8ea89d9009c_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\38c2e6e7c809096dcb36e8ea89d9009c_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:464

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\mnxtvmcd\
2⤵
- System Location Discovery: System Language Discovery
PID:1948

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ihxtawb.exe" C:\Windows\SysWOW64\mnxtvmcd\
2⤵
- System Location Discovery: System Language Discovery
PID:2156

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create mnxtvmcd binPath= "C:\Windows\SysWOW64\mnxtvmcd\ihxtawb.exe /d\"C:\Users\Admin\AppData\Local\Temp\38c2e6e7c809096dcb36e8ea89d9009c_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
- System Location Discovery: System Language Discovery
PID:2372

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description mnxtvmcd "wifi internet conection"
2⤵
- Launches sc.exe
- System Location Discovery: System Language Discovery
PID:1668

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start mnxtvmcd
2⤵
- Launches sc.exe
- System Location Discovery: System Language Discovery
PID:1844

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:4864

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 464 -s 1040
2⤵
- Program crash
PID:2716

C:\Windows\SysWOW64\mnxtvmcd\ihxtawb.exe
C:\Windows\SysWOW64\mnxtvmcd\ihxtawb.exe /d"C:\Users\Admin\AppData\Local\Temp\38c2e6e7c809096dcb36e8ea89d9009c_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:652

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Sets service image path in registry
- Deletes itself
- System Location Discovery: System Language Discovery
PID:1072

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 652 -s 312
2⤵
- Program crash
PID:4836

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 464 -ip 464
1⤵
PID:4724

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 652 -ip 652
1⤵
PID:640

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

1

T1569

Service Execution

1

T1569.002

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Defense Evasion

Impair Defenses

1

T1562

Disable or Modify System Firewall

Modify Registry

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\ihxtawb.exe

Filesize
14.2MB

MD5
99b72f06d7e525096c539d28140de906

SHA1
5da67978af9690b205680125385ce336901b9c7d

SHA256
809c448ce61533ec79e0d51d1b9b699e8429db13e9d3861dbd47579c5845f0ae

SHA512
50cfb7b4e83310e9e703ffaa691e8f77d686927c18b51bb9c0afc2536682f4a2efcd0f89c074cc64ed4c11aadcff117708519e2aa2746d21f3a420e58dfc4011

Download Submit
memory/464-8-0x00000000020E0000-0x00000000020F3000-memory.dmp

Filesize
76KB

Download
memory/464-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/464-2-0x00000000020E0000-0x00000000020F3000-memory.dmp

Filesize
76KB

Download
memory/464-7-0x0000000000400000-0x00000000004E9000-memory.dmp

Filesize
932KB

Download
memory/464-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/464-1-0x0000000000640000-0x0000000000740000-memory.dmp

Filesize
1024KB

Download
memory/652-11-0x0000000000400000-0x00000000004E9000-memory.dmp

Filesize
932KB

Download
memory/652-13-0x0000000000400000-0x00000000004E9000-memory.dmp

Filesize
932KB

Download
memory/652-12-0x0000000000400000-0x00000000004E9000-memory.dmp

Filesize
932KB

Download
memory/652-18-0x0000000000400000-0x00000000004E9000-memory.dmp

Filesize
932KB

Download
memory/1072-14-0x0000000001250000-0x0000000001265000-memory.dmp

Filesize
84KB

Download
memory/1072-16-0x0000000001250000-0x0000000001265000-memory.dmp

Filesize
84KB

Download
memory/1072-17-0x0000000001250000-0x0000000001265000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads