tofsee | 2fa2e3c0368352f0cc46a5e42de6b156a172c45c8e95a39e80fecbb41dc2453b

General

Target

JaffaCakes118_2fa2e3c0368352f0cc46a5e42de6b156a172c45c8e95a39e80fecbb41dc2453b.exe
Size

147KB
MD5

9bc98020f65edd0e20f875752c4f7f2a
SHA1

b6d2e6452350b9024dc5c1b64f1c3c74bcbaad80
SHA256

2fa2e3c0368352f0cc46a5e42de6b156a172c45c8e95a39e80fecbb41dc2453b
SHA512

7d960a28ff1985404afbbe8aae97ac489c95a449ec8a2c30f0e870087269a2c6baaf63f32e008e0ca419626e0ec936a528905fa398e4eee4ff81cfacfcca9e63
SSDEEP

3072:CMh6zzNF8eQFYK7XstatZKObM/u86F2xZK2qfPhDXz:Cg6H38BFYKzsOkOQ/uIqfZ/

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

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
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
3088	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\mfutecoa\ImagePath = "C:\\Windows\\SysWOW64\\mfutecoa\\htfnnynv.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-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	JaffaCakes118_2fa2e3c0368352f0cc46a5e42de6b156a172c45c8e95a39e80fecbb41dc2453b.exe

Deletes itself 1 IoCs

pid	Process
1596	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2060	htfnnynv.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2060 set thread context of 1596	2060	htfnnynv.exe	100

Launches sc.exe 3 IoCs

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

pid	Process
3916	sc.exe
4192	sc.exe
4996	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	JaffaCakes118_2fa2e3c0368352f0cc46a5e42de6b156a172c45c8e95a39e80fecbb41dc2453b.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	htfnnynv.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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 748 wrote to memory of 1028	748	JaffaCakes118_2fa2e3c0368352f0cc46a5e42de6b156a172c45c8e95a39e80fecbb41dc2453b.exe	82
PID 748 wrote to memory of 1028	748	JaffaCakes118_2fa2e3c0368352f0cc46a5e42de6b156a172c45c8e95a39e80fecbb41dc2453b.exe	82
PID 748 wrote to memory of 1028	748	JaffaCakes118_2fa2e3c0368352f0cc46a5e42de6b156a172c45c8e95a39e80fecbb41dc2453b.exe	82
PID 748 wrote to memory of 4376	748	JaffaCakes118_2fa2e3c0368352f0cc46a5e42de6b156a172c45c8e95a39e80fecbb41dc2453b.exe	86
PID 748 wrote to memory of 4376	748	JaffaCakes118_2fa2e3c0368352f0cc46a5e42de6b156a172c45c8e95a39e80fecbb41dc2453b.exe	86
PID 748 wrote to memory of 4376	748	JaffaCakes118_2fa2e3c0368352f0cc46a5e42de6b156a172c45c8e95a39e80fecbb41dc2453b.exe	86
PID 748 wrote to memory of 3916	748	JaffaCakes118_2fa2e3c0368352f0cc46a5e42de6b156a172c45c8e95a39e80fecbb41dc2453b.exe	88
PID 748 wrote to memory of 3916	748	JaffaCakes118_2fa2e3c0368352f0cc46a5e42de6b156a172c45c8e95a39e80fecbb41dc2453b.exe	88
PID 748 wrote to memory of 3916	748	JaffaCakes118_2fa2e3c0368352f0cc46a5e42de6b156a172c45c8e95a39e80fecbb41dc2453b.exe	88
PID 748 wrote to memory of 4192	748	JaffaCakes118_2fa2e3c0368352f0cc46a5e42de6b156a172c45c8e95a39e80fecbb41dc2453b.exe	92
PID 748 wrote to memory of 4192	748	JaffaCakes118_2fa2e3c0368352f0cc46a5e42de6b156a172c45c8e95a39e80fecbb41dc2453b.exe	92
PID 748 wrote to memory of 4192	748	JaffaCakes118_2fa2e3c0368352f0cc46a5e42de6b156a172c45c8e95a39e80fecbb41dc2453b.exe	92
PID 748 wrote to memory of 4996	748	JaffaCakes118_2fa2e3c0368352f0cc46a5e42de6b156a172c45c8e95a39e80fecbb41dc2453b.exe	94
PID 748 wrote to memory of 4996	748	JaffaCakes118_2fa2e3c0368352f0cc46a5e42de6b156a172c45c8e95a39e80fecbb41dc2453b.exe	94
PID 748 wrote to memory of 4996	748	JaffaCakes118_2fa2e3c0368352f0cc46a5e42de6b156a172c45c8e95a39e80fecbb41dc2453b.exe	94
PID 748 wrote to memory of 3088	748	JaffaCakes118_2fa2e3c0368352f0cc46a5e42de6b156a172c45c8e95a39e80fecbb41dc2453b.exe	97
PID 748 wrote to memory of 3088	748	JaffaCakes118_2fa2e3c0368352f0cc46a5e42de6b156a172c45c8e95a39e80fecbb41dc2453b.exe	97
PID 748 wrote to memory of 3088	748	JaffaCakes118_2fa2e3c0368352f0cc46a5e42de6b156a172c45c8e95a39e80fecbb41dc2453b.exe	97
PID 2060 wrote to memory of 1596	2060	htfnnynv.exe	100
PID 2060 wrote to memory of 1596	2060	htfnnynv.exe	100
PID 2060 wrote to memory of 1596	2060	htfnnynv.exe	100
PID 2060 wrote to memory of 1596	2060	htfnnynv.exe	100
PID 2060 wrote to memory of 1596	2060	htfnnynv.exe	100

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_2fa2e3c0368352f0cc46a5e42de6b156a172c45c8e95a39e80fecbb41dc2453b.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_2fa2e3c0368352f0cc46a5e42de6b156a172c45c8e95a39e80fecbb41dc2453b.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:748
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\mfutecoa\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1028
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\htfnnynv.exe" C:\Windows\SysWOW64\mfutecoa\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4376
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create mfutecoa binPath= "C:\Windows\SysWOW64\mfutecoa\htfnnynv.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_2fa2e3c0368352f0cc46a5e42de6b156a172c45c8e95a39e80fecbb41dc2453b.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3916
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description mfutecoa "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4192
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start mfutecoa
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4996
- 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:3088

C:\Windows\SysWOW64\mfutecoa\htfnnynv.exe
C:\Windows\SysWOW64\mfutecoa\htfnnynv.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_2fa2e3c0368352f0cc46a5e42de6b156a172c45c8e95a39e80fecbb41dc2453b.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2060
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1596

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\htfnnynv.exe

Filesize
14.8MB

MD5
45f581a12a8e845acd31f71a8da5609c

SHA1
bf3d83d4faf49dbe7292631363044b826405371b

SHA256
ceeb9530737d0b63b3152d92a4f029eec0cf249365952780484786b77a8c54ef

SHA512
741f10f31a479206b6913992c2dc4cd4b943dcea84f6e175a16695b2829c4f804a2dd9d9bf8a74687c44ece7ca8d0a0e98927aac92312d8753088f1baaae7485

Download Submit
memory/748-8-0x0000000000400000-0x00000000004AB000-memory.dmp

Filesize
684KB

Download
memory/748-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/748-2-0x0000000000580000-0x0000000000593000-memory.dmp

Filesize
76KB

Download
memory/748-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/748-9-0x0000000000580000-0x0000000000593000-memory.dmp

Filesize
76KB

Download
memory/748-1-0x00000000005B0000-0x00000000006B0000-memory.dmp

Filesize
1024KB

Download
memory/1596-14-0x00000000008F0000-0x0000000000905000-memory.dmp

Filesize
84KB

Download
memory/1596-18-0x00000000008F0000-0x0000000000905000-memory.dmp

Filesize
84KB

Download
memory/1596-19-0x00000000008F0000-0x0000000000905000-memory.dmp

Filesize
84KB

Download
memory/2060-11-0x0000000000400000-0x00000000004AB000-memory.dmp

Filesize
684KB

Download
memory/2060-12-0x0000000000400000-0x00000000004AB000-memory.dmp

Filesize
684KB

Download
memory/2060-13-0x0000000000400000-0x00000000004AB000-memory.dmp

Filesize
684KB

Download
memory/2060-16-0x0000000000400000-0x00000000004AB000-memory.dmp

Filesize
684KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads