tofsee | e8642c02dea577bb9c4db1d767f1028aa52e25b86c90369ada17a32c9b8c9974

General

Target

JaffaCakes118_85c64a1eb4c5c0cd9a5d2a53bbec5616.exe
Size

12.2MB
MD5

85c64a1eb4c5c0cd9a5d2a53bbec5616
SHA1

fddc3bfdb09fa48de605b9607671c0ecc5ea6a3a
SHA256

e8642c02dea577bb9c4db1d767f1028aa52e25b86c90369ada17a32c9b8c9974
SHA512

16297cf27f2cfed4eb203ad12bb409a1a1c45e03d9bd6c539d7a15f102d3c1fd2cc5c8e263db97c6dbf5d2d240c81889cd8092d40495da6eb0822552f4e8b5fe
SSDEEP

6144:8M0Em6Qk5N3ScccccccccccccccccccccccccccccccccccccccccccccccccccM:yEma

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
Tofsee family
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

pid	Process
2620	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\iikrobfa\ImagePath = "C:\\Windows\\SysWOW64\\iikrobfa\\tnpmgcmr.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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	JaffaCakes118_85c64a1eb4c5c0cd9a5d2a53bbec5616.exe

Deletes itself 1 IoCs

pid	Process
1840	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4336	tnpmgcmr.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4336 set thread context of 1840	4336	tnpmgcmr.exe	97

Launches sc.exe 3 IoCs

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

pid	Process
3928	sc.exe
5016	sc.exe
4796	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	tnpmgcmr.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	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	JaffaCakes118_85c64a1eb4c5c0cd9a5d2a53bbec5616.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2256 wrote to memory of 2940	2256	JaffaCakes118_85c64a1eb4c5c0cd9a5d2a53bbec5616.exe	83
PID 2256 wrote to memory of 2940	2256	JaffaCakes118_85c64a1eb4c5c0cd9a5d2a53bbec5616.exe	83
PID 2256 wrote to memory of 2940	2256	JaffaCakes118_85c64a1eb4c5c0cd9a5d2a53bbec5616.exe	83
PID 2256 wrote to memory of 232	2256	JaffaCakes118_85c64a1eb4c5c0cd9a5d2a53bbec5616.exe	85
PID 2256 wrote to memory of 232	2256	JaffaCakes118_85c64a1eb4c5c0cd9a5d2a53bbec5616.exe	85
PID 2256 wrote to memory of 232	2256	JaffaCakes118_85c64a1eb4c5c0cd9a5d2a53bbec5616.exe	85
PID 2256 wrote to memory of 5016	2256	JaffaCakes118_85c64a1eb4c5c0cd9a5d2a53bbec5616.exe	87
PID 2256 wrote to memory of 5016	2256	JaffaCakes118_85c64a1eb4c5c0cd9a5d2a53bbec5616.exe	87
PID 2256 wrote to memory of 5016	2256	JaffaCakes118_85c64a1eb4c5c0cd9a5d2a53bbec5616.exe	87
PID 2256 wrote to memory of 4796	2256	JaffaCakes118_85c64a1eb4c5c0cd9a5d2a53bbec5616.exe	89
PID 2256 wrote to memory of 4796	2256	JaffaCakes118_85c64a1eb4c5c0cd9a5d2a53bbec5616.exe	89
PID 2256 wrote to memory of 4796	2256	JaffaCakes118_85c64a1eb4c5c0cd9a5d2a53bbec5616.exe	89
PID 2256 wrote to memory of 3928	2256	JaffaCakes118_85c64a1eb4c5c0cd9a5d2a53bbec5616.exe	91
PID 2256 wrote to memory of 3928	2256	JaffaCakes118_85c64a1eb4c5c0cd9a5d2a53bbec5616.exe	91
PID 2256 wrote to memory of 3928	2256	JaffaCakes118_85c64a1eb4c5c0cd9a5d2a53bbec5616.exe	91
PID 2256 wrote to memory of 2620	2256	JaffaCakes118_85c64a1eb4c5c0cd9a5d2a53bbec5616.exe	95
PID 2256 wrote to memory of 2620	2256	JaffaCakes118_85c64a1eb4c5c0cd9a5d2a53bbec5616.exe	95
PID 2256 wrote to memory of 2620	2256	JaffaCakes118_85c64a1eb4c5c0cd9a5d2a53bbec5616.exe	95
PID 4336 wrote to memory of 1840	4336	tnpmgcmr.exe	97
PID 4336 wrote to memory of 1840	4336	tnpmgcmr.exe	97
PID 4336 wrote to memory of 1840	4336	tnpmgcmr.exe	97
PID 4336 wrote to memory of 1840	4336	tnpmgcmr.exe	97
PID 4336 wrote to memory of 1840	4336	tnpmgcmr.exe	97

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_85c64a1eb4c5c0cd9a5d2a53bbec5616.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_85c64a1eb4c5c0cd9a5d2a53bbec5616.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2256
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\iikrobfa\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2940
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\tnpmgcmr.exe" C:\Windows\SysWOW64\iikrobfa\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:232
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create iikrobfa binPath= "C:\Windows\SysWOW64\iikrobfa\tnpmgcmr.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_85c64a1eb4c5c0cd9a5d2a53bbec5616.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:5016
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description iikrobfa "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4796
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start iikrobfa
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3928
- 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:2620

C:\Windows\SysWOW64\iikrobfa\tnpmgcmr.exe
C:\Windows\SysWOW64\iikrobfa\tnpmgcmr.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_85c64a1eb4c5c0cd9a5d2a53bbec5616.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4336
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1840

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

Replay Monitor

Loading Replay Monitor...

Downloads

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

Filesize
10.2MB

MD5
ff41a9f7bbc2fcb2424dcd5ba50e4192

SHA1
a6fd2b12dfb0b41e08ba3b4f274e0d75870fe638

SHA256
8659ef307fa2b2c2d0c1814aadae4245c450af988cf942f064831db753f36610

SHA512
ea2d4b57e3264fdf807bb50a323dd7a9c76c8a7be185c86b002a070d205f68724fd571b0a1d198c9a42ff530040d987c56291fad4c4a89556b4c5dfa32641951

Download Submit
memory/1840-8-0x00000000010A0000-0x00000000010B5000-memory.dmp

Filesize
84KB

Download
memory/1840-13-0x00000000010A0000-0x00000000010B5000-memory.dmp

Filesize
84KB

Download
memory/1840-14-0x00000000010A0000-0x00000000010B5000-memory.dmp

Filesize
84KB

Download
memory/1840-15-0x00000000010A0000-0x00000000010B5000-memory.dmp

Filesize
84KB

Download
memory/1840-16-0x00000000010A0000-0x00000000010B5000-memory.dmp

Filesize
84KB

Download
memory/2256-0-0x00000000009C0000-0x00000000009C1000-memory.dmp

Filesize
4KB

Download
memory/2256-1-0x00000000009D0000-0x00000000009D1000-memory.dmp

Filesize
4KB

Download
memory/2256-2-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2256-9-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/4336-7-0x00000000004B0000-0x00000000004B1000-memory.dmp

Filesize
4KB

Download
memory/4336-12-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads