tofsee | 7e2bf8eb0fd9b0d9b7c4d6ace2338eeea63c86dab7af88bafd8125d5975c1a32

General

Target

3df1d170c4b3e888a2fcb1b85d3b3b32_JaffaCakes118.exe
Size

10.3MB
MD5

3df1d170c4b3e888a2fcb1b85d3b3b32
SHA1

9be13fee01057b0a10dc141afd9f0a5f2137b986
SHA256

7e2bf8eb0fd9b0d9b7c4d6ace2338eeea63c86dab7af88bafd8125d5975c1a32
SHA512

793aa2a5230759cf02b6c84b01f9d278748afa9bd9666573eb6a88ec683a154967afa1efebe2c4af842bf0c82c4ec6a6546aab8921b995a4e80be4c2bceda51a
SSDEEP

49152:8T81MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMw:8T8

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
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
4440	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\oaapvajn\ImagePath = "C:\\Windows\\SysWOW64\\oaapvajn\\pctcuhjd.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-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	3df1d170c4b3e888a2fcb1b85d3b3b32_JaffaCakes118.exe

Executes dropped EXE 1 IoCs

pid	Process
1804	pctcuhjd.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1804 set thread context of 4612	1804	pctcuhjd.exe	99

Launches sc.exe 3 IoCs

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

pid	Process
2268	sc.exe
856	sc.exe
1416	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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	pctcuhjd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	3df1d170c4b3e888a2fcb1b85d3b3b32_JaffaCakes118.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

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4480 wrote to memory of 4664	4480	3df1d170c4b3e888a2fcb1b85d3b3b32_JaffaCakes118.exe	86
PID 4480 wrote to memory of 4664	4480	3df1d170c4b3e888a2fcb1b85d3b3b32_JaffaCakes118.exe	86
PID 4480 wrote to memory of 4664	4480	3df1d170c4b3e888a2fcb1b85d3b3b32_JaffaCakes118.exe	86
PID 4480 wrote to memory of 4164	4480	3df1d170c4b3e888a2fcb1b85d3b3b32_JaffaCakes118.exe	88
PID 4480 wrote to memory of 4164	4480	3df1d170c4b3e888a2fcb1b85d3b3b32_JaffaCakes118.exe	88
PID 4480 wrote to memory of 4164	4480	3df1d170c4b3e888a2fcb1b85d3b3b32_JaffaCakes118.exe	88
PID 4480 wrote to memory of 1416	4480	3df1d170c4b3e888a2fcb1b85d3b3b32_JaffaCakes118.exe	90
PID 4480 wrote to memory of 1416	4480	3df1d170c4b3e888a2fcb1b85d3b3b32_JaffaCakes118.exe	90
PID 4480 wrote to memory of 1416	4480	3df1d170c4b3e888a2fcb1b85d3b3b32_JaffaCakes118.exe	90
PID 4480 wrote to memory of 2268	4480	3df1d170c4b3e888a2fcb1b85d3b3b32_JaffaCakes118.exe	92
PID 4480 wrote to memory of 2268	4480	3df1d170c4b3e888a2fcb1b85d3b3b32_JaffaCakes118.exe	92
PID 4480 wrote to memory of 2268	4480	3df1d170c4b3e888a2fcb1b85d3b3b32_JaffaCakes118.exe	92
PID 4480 wrote to memory of 856	4480	3df1d170c4b3e888a2fcb1b85d3b3b32_JaffaCakes118.exe	94
PID 4480 wrote to memory of 856	4480	3df1d170c4b3e888a2fcb1b85d3b3b32_JaffaCakes118.exe	94
PID 4480 wrote to memory of 856	4480	3df1d170c4b3e888a2fcb1b85d3b3b32_JaffaCakes118.exe	94
PID 4480 wrote to memory of 4440	4480	3df1d170c4b3e888a2fcb1b85d3b3b32_JaffaCakes118.exe	97
PID 4480 wrote to memory of 4440	4480	3df1d170c4b3e888a2fcb1b85d3b3b32_JaffaCakes118.exe	97
PID 4480 wrote to memory of 4440	4480	3df1d170c4b3e888a2fcb1b85d3b3b32_JaffaCakes118.exe	97
PID 1804 wrote to memory of 4612	1804	pctcuhjd.exe	99
PID 1804 wrote to memory of 4612	1804	pctcuhjd.exe	99
PID 1804 wrote to memory of 4612	1804	pctcuhjd.exe	99
PID 1804 wrote to memory of 4612	1804	pctcuhjd.exe	99
PID 1804 wrote to memory of 4612	1804	pctcuhjd.exe	99

C:\Users\Admin\AppData\Local\Temp\3df1d170c4b3e888a2fcb1b85d3b3b32_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\3df1d170c4b3e888a2fcb1b85d3b3b32_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4480
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\oaapvajn\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4664
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\pctcuhjd.exe" C:\Windows\SysWOW64\oaapvajn\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4164
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create oaapvajn binPath= "C:\Windows\SysWOW64\oaapvajn\pctcuhjd.exe /d\"C:\Users\Admin\AppData\Local\Temp\3df1d170c4b3e888a2fcb1b85d3b3b32_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1416
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description oaapvajn "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2268
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start oaapvajn
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:856
- 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:4440

C:\Windows\SysWOW64\oaapvajn\pctcuhjd.exe
C:\Windows\SysWOW64\oaapvajn\pctcuhjd.exe /d"C:\Users\Admin\AppData\Local\Temp\3df1d170c4b3e888a2fcb1b85d3b3b32_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1804
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - System Location Discovery: System Language Discovery
  PID:4612

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\pctcuhjd.exe

Filesize
13.2MB

MD5
1fb9c38b279515f6024ffded8f60282a

SHA1
01c880d12188ed9b78963e1f65890b4c8253d6a2

SHA256
774a3b9c0836d1d2a21af3ac418c7b7b3c17ae05ec5056981f4c5bb540e134a0

SHA512
9c2041720e12eb82fa8418323a5a8525cd1bdc973388a35c216cd825ec19a33a7badba1c494d94909ac67b39c2ba70b521358540b776fee2b56b1ccff5c86669

Download Submit
memory/1804-16-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/1804-8-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/4480-11-0x0000000000720000-0x0000000000820000-memory.dmp

Filesize
1024KB

Download
memory/4480-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4480-1-0x0000000000720000-0x0000000000820000-memory.dmp

Filesize
1024KB

Download
memory/4480-12-0x00000000021C0000-0x00000000021D3000-memory.dmp

Filesize
76KB

Download
memory/4480-14-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4480-13-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/4480-2-0x00000000021C0000-0x00000000021D3000-memory.dmp

Filesize
76KB

Download
memory/4612-9-0x0000000000CC0000-0x0000000000CD5000-memory.dmp

Filesize
84KB

Download
memory/4612-17-0x0000000000CC0000-0x0000000000CD5000-memory.dmp

Filesize
84KB

Download
memory/4612-18-0x0000000000CC0000-0x0000000000CD5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads