tofsee | de17973ae83b8d093085f6288d74a8dcbccac465f0201030ea223b1b38cb29ff

General

Target

JaffaCakes118_de17973ae83b8d093085f6288d74a8dcbccac465f0201030ea223b1b38cb29ff.exe
Size

304KB
MD5

22a413c15a4a559e00bb46a7ea9c8328
SHA1

75e0330c2ddced4d2f752709e2f2733f2557f922
SHA256

de17973ae83b8d093085f6288d74a8dcbccac465f0201030ea223b1b38cb29ff
SHA512

fca580091b1b058c3602a92d4645d206a323300e10664ec7085ef4270c269d88d5442770cafa6886aedc8ee6472959f3f27090e5ac6d8a0759bc1d9e5de3c7bf
SSDEEP

6144:VTjfugLvStP73OTkf87CjHIWRLIIL6MCOhxxFeTr/ekI:VrrStakfKGHP/L6+zxF6L

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
3324	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\pqjavyre\ImagePath = "C:\\Windows\\SysWOW64\\pqjavyre\\ybucacku.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-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation	JaffaCakes118_de17973ae83b8d093085f6288d74a8dcbccac465f0201030ea223b1b38cb29ff.exe

Deletes itself 1 IoCs

pid	Process
4372	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4448	ybucacku.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\pqjavyre\ybucacku.exe	ybucacku.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4448 set thread context of 4372	4448	ybucacku.exe	100

Launches sc.exe 3 IoCs

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

pid	Process
1552	sc.exe
4084	sc.exe
1936	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 value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2164	2332	WerFault.exe	82

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	ybucacku.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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_de17973ae83b8d093085f6288d74a8dcbccac465f0201030ea223b1b38cb29ff.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2332 wrote to memory of 2424	2332	JaffaCakes118_de17973ae83b8d093085f6288d74a8dcbccac465f0201030ea223b1b38cb29ff.exe	83
PID 2332 wrote to memory of 2424	2332	JaffaCakes118_de17973ae83b8d093085f6288d74a8dcbccac465f0201030ea223b1b38cb29ff.exe	83
PID 2332 wrote to memory of 2424	2332	JaffaCakes118_de17973ae83b8d093085f6288d74a8dcbccac465f0201030ea223b1b38cb29ff.exe	83
PID 2332 wrote to memory of 3644	2332	JaffaCakes118_de17973ae83b8d093085f6288d74a8dcbccac465f0201030ea223b1b38cb29ff.exe	85
PID 2332 wrote to memory of 3644	2332	JaffaCakes118_de17973ae83b8d093085f6288d74a8dcbccac465f0201030ea223b1b38cb29ff.exe	85
PID 2332 wrote to memory of 3644	2332	JaffaCakes118_de17973ae83b8d093085f6288d74a8dcbccac465f0201030ea223b1b38cb29ff.exe	85
PID 2332 wrote to memory of 1552	2332	JaffaCakes118_de17973ae83b8d093085f6288d74a8dcbccac465f0201030ea223b1b38cb29ff.exe	87
PID 2332 wrote to memory of 1552	2332	JaffaCakes118_de17973ae83b8d093085f6288d74a8dcbccac465f0201030ea223b1b38cb29ff.exe	87
PID 2332 wrote to memory of 1552	2332	JaffaCakes118_de17973ae83b8d093085f6288d74a8dcbccac465f0201030ea223b1b38cb29ff.exe	87
PID 2332 wrote to memory of 4084	2332	JaffaCakes118_de17973ae83b8d093085f6288d74a8dcbccac465f0201030ea223b1b38cb29ff.exe	89
PID 2332 wrote to memory of 4084	2332	JaffaCakes118_de17973ae83b8d093085f6288d74a8dcbccac465f0201030ea223b1b38cb29ff.exe	89
PID 2332 wrote to memory of 4084	2332	JaffaCakes118_de17973ae83b8d093085f6288d74a8dcbccac465f0201030ea223b1b38cb29ff.exe	89
PID 2332 wrote to memory of 1936	2332	JaffaCakes118_de17973ae83b8d093085f6288d74a8dcbccac465f0201030ea223b1b38cb29ff.exe	91
PID 2332 wrote to memory of 1936	2332	JaffaCakes118_de17973ae83b8d093085f6288d74a8dcbccac465f0201030ea223b1b38cb29ff.exe	91
PID 2332 wrote to memory of 1936	2332	JaffaCakes118_de17973ae83b8d093085f6288d74a8dcbccac465f0201030ea223b1b38cb29ff.exe	91
PID 2332 wrote to memory of 3324	2332	JaffaCakes118_de17973ae83b8d093085f6288d74a8dcbccac465f0201030ea223b1b38cb29ff.exe	94
PID 2332 wrote to memory of 3324	2332	JaffaCakes118_de17973ae83b8d093085f6288d74a8dcbccac465f0201030ea223b1b38cb29ff.exe	94
PID 2332 wrote to memory of 3324	2332	JaffaCakes118_de17973ae83b8d093085f6288d74a8dcbccac465f0201030ea223b1b38cb29ff.exe	94
PID 4448 wrote to memory of 4372	4448	ybucacku.exe	100
PID 4448 wrote to memory of 4372	4448	ybucacku.exe	100
PID 4448 wrote to memory of 4372	4448	ybucacku.exe	100
PID 4448 wrote to memory of 4372	4448	ybucacku.exe	100
PID 4448 wrote to memory of 4372	4448	ybucacku.exe	100

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_de17973ae83b8d093085f6288d74a8dcbccac465f0201030ea223b1b38cb29ff.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_de17973ae83b8d093085f6288d74a8dcbccac465f0201030ea223b1b38cb29ff.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2332
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\pqjavyre\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2424
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ybucacku.exe" C:\Windows\SysWOW64\pqjavyre\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3644
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create pqjavyre binPath= "C:\Windows\SysWOW64\pqjavyre\ybucacku.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_de17973ae83b8d093085f6288d74a8dcbccac465f0201030ea223b1b38cb29ff.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1552
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description pqjavyre "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4084
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start pqjavyre
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1936
- 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:3324
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2332 -s 1044
  2⤵
  - Program crash
  PID:2164

C:\Windows\SysWOW64\pqjavyre\ybucacku.exe
C:\Windows\SysWOW64\pqjavyre\ybucacku.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_de17973ae83b8d093085f6288d74a8dcbccac465f0201030ea223b1b38cb29ff.exe"
1⤵
- Executes dropped EXE
- Drops file in System32 directory
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4448
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4372

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 2332 -ip 2332
1⤵
PID:2372

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\ybucacku.exe

Filesize
10.8MB

MD5
c2ae335f859d8be9d9dc5369f2d38ce3

SHA1
fdb750fe8461bb372c761bc3ab057899080b48f8

SHA256
78904dbff2e618d5a3024d50cfc6b1c4ecace0ad65a9c6674b931459e052fe44

SHA512
28ab43bc75525a6e2bb5d86f3e9e1caad9db3ece2b0a793c9a5c971cfb7549b5fdf1077045143b3b6fd91f20bef24af749748906798600ef719fccc0db84f0e6

Download Submit
memory/2332-8-0x0000000000400000-0x0000000000459000-memory.dmp

Filesize
356KB

Download
memory/2332-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2332-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/2332-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2332-9-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/2332-1-0x0000000000760000-0x0000000000860000-memory.dmp

Filesize
1024KB

Download
memory/4372-14-0x0000000001270000-0x0000000001285000-memory.dmp

Filesize
84KB

Download
memory/4372-18-0x0000000001270000-0x0000000001285000-memory.dmp

Filesize
84KB

Download
memory/4372-19-0x0000000001270000-0x0000000001285000-memory.dmp

Filesize
84KB

Download
memory/4448-11-0x0000000000400000-0x0000000000459000-memory.dmp

Filesize
356KB

Download
memory/4448-12-0x0000000000400000-0x0000000000459000-memory.dmp

Filesize
356KB

Download
memory/4448-13-0x0000000000400000-0x0000000000459000-memory.dmp

Filesize
356KB

Download
memory/4448-16-0x0000000000400000-0x0000000000459000-memory.dmp

Filesize
356KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads