tofsee | c4870e799d9e991f54e556edb68a33fe3b134084ca1964be1f82f008627587c3

General

Target

JaffaCakes118_c4870e799d9e991f54e556edb68a33fe3b134084ca1964be1f82f008627587c3.exe
Size

306KB
MD5

1d30a5438b113d6d62bee2d8bfc32f38
SHA1

bb31fba8bffd977b24d0435a8b64c9a990069358
SHA256

c4870e799d9e991f54e556edb68a33fe3b134084ca1964be1f82f008627587c3
SHA512

eb056fcf5f23a1e08719b910361615313b5f35eef7b579a2862b534edf617d2b60f676c98e17200ea3ef9c619b5815d4a5346c13316dff394b70528d1d0c0352
SSDEEP

6144:9bjv5PFwxvAeFDJa98J9+UWMoE+aJamHFraqT41:xv5PFwxvxF39+4oBaX0qT4

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
4776	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\azhrfudr\ImagePath = "C:\\Windows\\SysWOW64\\azhrfudr\\adwecemw.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-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation	JaffaCakes118_c4870e799d9e991f54e556edb68a33fe3b134084ca1964be1f82f008627587c3.exe

Deletes itself 1 IoCs

pid	Process
4168	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3332	adwecemw.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3332 set thread context of 4168	3332	adwecemw.exe	103

Launches sc.exe 3 IoCs

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

pid	Process
2440	sc.exe
5040	sc.exe
32	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

Program crash 2 IoCs

pid	pid_target	Process	procid_target
3440	4980	WerFault.exe	84
4204	3332	WerFault.exe	96

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_c4870e799d9e991f54e556edb68a33fe3b134084ca1964be1f82f008627587c3.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	adwecemw.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	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4980 wrote to memory of 4708	4980	JaffaCakes118_c4870e799d9e991f54e556edb68a33fe3b134084ca1964be1f82f008627587c3.exe	85
PID 4980 wrote to memory of 4708	4980	JaffaCakes118_c4870e799d9e991f54e556edb68a33fe3b134084ca1964be1f82f008627587c3.exe	85
PID 4980 wrote to memory of 4708	4980	JaffaCakes118_c4870e799d9e991f54e556edb68a33fe3b134084ca1964be1f82f008627587c3.exe	85
PID 4980 wrote to memory of 3940	4980	JaffaCakes118_c4870e799d9e991f54e556edb68a33fe3b134084ca1964be1f82f008627587c3.exe	87
PID 4980 wrote to memory of 3940	4980	JaffaCakes118_c4870e799d9e991f54e556edb68a33fe3b134084ca1964be1f82f008627587c3.exe	87
PID 4980 wrote to memory of 3940	4980	JaffaCakes118_c4870e799d9e991f54e556edb68a33fe3b134084ca1964be1f82f008627587c3.exe	87
PID 4980 wrote to memory of 2440	4980	JaffaCakes118_c4870e799d9e991f54e556edb68a33fe3b134084ca1964be1f82f008627587c3.exe	89
PID 4980 wrote to memory of 2440	4980	JaffaCakes118_c4870e799d9e991f54e556edb68a33fe3b134084ca1964be1f82f008627587c3.exe	89
PID 4980 wrote to memory of 2440	4980	JaffaCakes118_c4870e799d9e991f54e556edb68a33fe3b134084ca1964be1f82f008627587c3.exe	89
PID 4980 wrote to memory of 5040	4980	JaffaCakes118_c4870e799d9e991f54e556edb68a33fe3b134084ca1964be1f82f008627587c3.exe	92
PID 4980 wrote to memory of 5040	4980	JaffaCakes118_c4870e799d9e991f54e556edb68a33fe3b134084ca1964be1f82f008627587c3.exe	92
PID 4980 wrote to memory of 5040	4980	JaffaCakes118_c4870e799d9e991f54e556edb68a33fe3b134084ca1964be1f82f008627587c3.exe	92
PID 4980 wrote to memory of 32	4980	JaffaCakes118_c4870e799d9e991f54e556edb68a33fe3b134084ca1964be1f82f008627587c3.exe	94
PID 4980 wrote to memory of 32	4980	JaffaCakes118_c4870e799d9e991f54e556edb68a33fe3b134084ca1964be1f82f008627587c3.exe	94
PID 4980 wrote to memory of 32	4980	JaffaCakes118_c4870e799d9e991f54e556edb68a33fe3b134084ca1964be1f82f008627587c3.exe	94
PID 4980 wrote to memory of 4776	4980	JaffaCakes118_c4870e799d9e991f54e556edb68a33fe3b134084ca1964be1f82f008627587c3.exe	97
PID 4980 wrote to memory of 4776	4980	JaffaCakes118_c4870e799d9e991f54e556edb68a33fe3b134084ca1964be1f82f008627587c3.exe	97
PID 4980 wrote to memory of 4776	4980	JaffaCakes118_c4870e799d9e991f54e556edb68a33fe3b134084ca1964be1f82f008627587c3.exe	97
PID 3332 wrote to memory of 4168	3332	adwecemw.exe	103
PID 3332 wrote to memory of 4168	3332	adwecemw.exe	103
PID 3332 wrote to memory of 4168	3332	adwecemw.exe	103
PID 3332 wrote to memory of 4168	3332	adwecemw.exe	103
PID 3332 wrote to memory of 4168	3332	adwecemw.exe	103

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c4870e799d9e991f54e556edb68a33fe3b134084ca1964be1f82f008627587c3.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c4870e799d9e991f54e556edb68a33fe3b134084ca1964be1f82f008627587c3.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4980
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\azhrfudr\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4708
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\adwecemw.exe" C:\Windows\SysWOW64\azhrfudr\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3940
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create azhrfudr binPath= "C:\Windows\SysWOW64\azhrfudr\adwecemw.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c4870e799d9e991f54e556edb68a33fe3b134084ca1964be1f82f008627587c3.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2440
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description azhrfudr "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:5040
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start azhrfudr
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:32
- 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:4776
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4980 -s 1036
  2⤵
  - Program crash
  PID:3440

C:\Windows\SysWOW64\azhrfudr\adwecemw.exe
C:\Windows\SysWOW64\azhrfudr\adwecemw.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c4870e799d9e991f54e556edb68a33fe3b134084ca1964be1f82f008627587c3.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3332
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4168
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3332 -s 516
  2⤵
  - Program crash
  PID:4204

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 4980 -ip 4980
1⤵
PID:2668

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 184 -p 3332 -ip 3332
1⤵
PID:4716

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\adwecemw.exe

Filesize
14.1MB

MD5
2479c70b96516b3d9596ca15f10799c1

SHA1
90e4787e265b629ed39b96e116c172ff01b7e93a

SHA256
59175b7e0bf65ef78909e0731619c5a705428a0e8ef27306a3dc817f7ead91f0

SHA512
91a5b13fc9b2968524a33c854600809d305d5728361e9cf68ed7ae99c8d9801bdee11077bbcbd57114f5fcba154192f401d2120ed9e4b6274b0008ca56ddb279

Download Submit
memory/3332-15-0x0000000000400000-0x0000000002B94000-memory.dmp

Filesize
39.6MB

Download
memory/4168-11-0x00000000010A0000-0x00000000010B5000-memory.dmp

Filesize
84KB

Download
memory/4168-13-0x00000000010A0000-0x00000000010B5000-memory.dmp

Filesize
84KB

Download
memory/4168-14-0x00000000010A0000-0x00000000010B5000-memory.dmp

Filesize
84KB

Download
memory/4980-1-0x0000000002BD0000-0x0000000002CD0000-memory.dmp

Filesize
1024KB

Download
memory/4980-2-0x0000000002BA0000-0x0000000002BB3000-memory.dmp

Filesize
76KB

Download
memory/4980-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4980-9-0x0000000002BA0000-0x0000000002BB3000-memory.dmp

Filesize
76KB

Download
memory/4980-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4980-8-0x0000000000400000-0x0000000002B94000-memory.dmp

Filesize
39.6MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads