tofsee | 9364999d416a2de1c0b9b3bb46948e40be929418c06154cebee0602ca4e7b800

General

Target

12754fe20fd60bd57247b65d64d97e83_JaffaCakes118.exe
Size

13.4MB
MD5

12754fe20fd60bd57247b65d64d97e83
SHA1

bf98f755046fb4092788ee8821bd0c1fa0530efa
SHA256

9364999d416a2de1c0b9b3bb46948e40be929418c06154cebee0602ca4e7b800
SHA512

90a1f91c3c5cb12953781d502b1a3cc1b1dac3a0fc69a15e9c0abbbedf3fb05073ac64e6860002ba5d6ae9d089999bfa2a976a99b1a92e070773c81c2239e0ec
SSDEEP

393216:uLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLz:

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
3800	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\mivjsqq\ImagePath = "C:\\Windows\\SysWOW64\\mivjsqq\\rusnhoyi.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-1-5-21-4182098368-2521458979-3782681353-1000\Control Panel\International\Geo\Nation	12754fe20fd60bd57247b65d64d97e83_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
2572	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4744	rusnhoyi.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4744 set thread context of 2572	4744	rusnhoyi.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
2524	sc.exe
4928	sc.exe
2368	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
2908	4244	WerFault.exe	81
2248	4744	WerFault.exe	92

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	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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rusnhoyi.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	12754fe20fd60bd57247b65d64d97e83_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4244 wrote to memory of 4636	4244	12754fe20fd60bd57247b65d64d97e83_JaffaCakes118.exe	82
PID 4244 wrote to memory of 4636	4244	12754fe20fd60bd57247b65d64d97e83_JaffaCakes118.exe	82
PID 4244 wrote to memory of 4636	4244	12754fe20fd60bd57247b65d64d97e83_JaffaCakes118.exe	82
PID 4244 wrote to memory of 452	4244	12754fe20fd60bd57247b65d64d97e83_JaffaCakes118.exe	84
PID 4244 wrote to memory of 452	4244	12754fe20fd60bd57247b65d64d97e83_JaffaCakes118.exe	84
PID 4244 wrote to memory of 452	4244	12754fe20fd60bd57247b65d64d97e83_JaffaCakes118.exe	84
PID 4244 wrote to memory of 2524	4244	12754fe20fd60bd57247b65d64d97e83_JaffaCakes118.exe	86
PID 4244 wrote to memory of 2524	4244	12754fe20fd60bd57247b65d64d97e83_JaffaCakes118.exe	86
PID 4244 wrote to memory of 2524	4244	12754fe20fd60bd57247b65d64d97e83_JaffaCakes118.exe	86
PID 4244 wrote to memory of 4928	4244	12754fe20fd60bd57247b65d64d97e83_JaffaCakes118.exe	88
PID 4244 wrote to memory of 4928	4244	12754fe20fd60bd57247b65d64d97e83_JaffaCakes118.exe	88
PID 4244 wrote to memory of 4928	4244	12754fe20fd60bd57247b65d64d97e83_JaffaCakes118.exe	88
PID 4244 wrote to memory of 2368	4244	12754fe20fd60bd57247b65d64d97e83_JaffaCakes118.exe	90
PID 4244 wrote to memory of 2368	4244	12754fe20fd60bd57247b65d64d97e83_JaffaCakes118.exe	90
PID 4244 wrote to memory of 2368	4244	12754fe20fd60bd57247b65d64d97e83_JaffaCakes118.exe	90
PID 4244 wrote to memory of 3800	4244	12754fe20fd60bd57247b65d64d97e83_JaffaCakes118.exe	93
PID 4244 wrote to memory of 3800	4244	12754fe20fd60bd57247b65d64d97e83_JaffaCakes118.exe	93
PID 4244 wrote to memory of 3800	4244	12754fe20fd60bd57247b65d64d97e83_JaffaCakes118.exe	93
PID 4744 wrote to memory of 2572	4744	rusnhoyi.exe	98
PID 4744 wrote to memory of 2572	4744	rusnhoyi.exe	98
PID 4744 wrote to memory of 2572	4744	rusnhoyi.exe	98
PID 4744 wrote to memory of 2572	4744	rusnhoyi.exe	98
PID 4744 wrote to memory of 2572	4744	rusnhoyi.exe	98

C:\Users\Admin\AppData\Local\Temp\12754fe20fd60bd57247b65d64d97e83_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\12754fe20fd60bd57247b65d64d97e83_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4244
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\mivjsqq\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4636
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\rusnhoyi.exe" C:\Windows\SysWOW64\mivjsqq\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:452
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create mivjsqq binPath= "C:\Windows\SysWOW64\mivjsqq\rusnhoyi.exe /d\"C:\Users\Admin\AppData\Local\Temp\12754fe20fd60bd57247b65d64d97e83_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2524
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description mivjsqq "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4928
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start mivjsqq
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2368
- 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:3800
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4244 -s 1156
  2⤵
  - Program crash
  PID:2908

C:\Windows\SysWOW64\mivjsqq\rusnhoyi.exe
C:\Windows\SysWOW64\mivjsqq\rusnhoyi.exe /d"C:\Users\Admin\AppData\Local\Temp\12754fe20fd60bd57247b65d64d97e83_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4744
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2572
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4744 -s 512
  2⤵
  - Program crash
  PID:2248

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 4244 -ip 4244
1⤵
PID:3640

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 488 -p 4744 -ip 4744
1⤵
PID:1592

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\rusnhoyi.exe

Filesize
14.5MB

MD5
00f017148801cb8104fd62019645c429

SHA1
8e4877618787ab2223702e0c4c642f1722f7dbe7

SHA256
9a430e0c32000403bbb0507f283871cda05ca1fa7c763b68eea448456b5c8d63

SHA512
be111ddc5e20c78a5889bcc7eaf4b7ee207dcb4243c3b5806627ec456a0a00fbe4f4ff41d0efc9599f489903f85a7765ba67b006b98329ffd1db08d90d4b40a3

Download Submit
memory/2572-14-0x0000000001270000-0x0000000001285000-memory.dmp

Filesize
84KB

Download
memory/2572-17-0x0000000001270000-0x0000000001285000-memory.dmp

Filesize
84KB

Download
memory/2572-16-0x0000000001270000-0x0000000001285000-memory.dmp

Filesize
84KB

Download
memory/4244-8-0x0000000000400000-0x0000000000455000-memory.dmp

Filesize
340KB

Download
memory/4244-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4244-1-0x00000000006C0000-0x00000000007C0000-memory.dmp

Filesize
1024KB

Download
memory/4244-9-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/4244-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4244-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/4744-11-0x0000000000400000-0x0000000000455000-memory.dmp

Filesize
340KB

Download
memory/4744-12-0x0000000000400000-0x0000000000455000-memory.dmp

Filesize
340KB

Download
memory/4744-13-0x0000000000400000-0x0000000000455000-memory.dmp

Filesize
340KB

Download
memory/4744-18-0x0000000000400000-0x0000000000455000-memory.dmp

Filesize
340KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads