tofsee | aa5b8ec889dd4d8364e6f0e2b851e0a4c9100db76c2b8e3b593625d0dac2b3aa

General

Target

3a8519e4f55bc93a4ffe59460d70499f_JaffaCakes118.exe
Size

10.3MB
MD5

3a8519e4f55bc93a4ffe59460d70499f
SHA1

85b43b33f7ca5f18b1e54da091a29a51680eb273
SHA256

aa5b8ec889dd4d8364e6f0e2b851e0a4c9100db76c2b8e3b593625d0dac2b3aa
SHA512

0360bb359c66cba72e18898900e81bf9586b6cc166fe00465e7f3edc01d74ec00cda31d24dbde8332c4b67b23a6cd68d314ac19217bd795bd8dacac887510a8e
SSDEEP

49152:S88888888888888888888888888888888888888888888888888888888888888I:

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
3232	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\gvsnaavu\ImagePath = "C:\\Windows\\SysWOW64\\gvsnaavu\\ffcxaria.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-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	3a8519e4f55bc93a4ffe59460d70499f_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
1388	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2968	ffcxaria.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2968 set thread context of 1388	2968	ffcxaria.exe	103

Launches sc.exe 3 IoCs

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

pid	Process
2264	sc.exe
4748	sc.exe
4064	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
876	1492	WerFault.exe	82
2664	2968	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	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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	3a8519e4f55bc93a4ffe59460d70499f_JaffaCakes118.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	ffcxaria.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1492 wrote to memory of 4136	1492	3a8519e4f55bc93a4ffe59460d70499f_JaffaCakes118.exe	86
PID 1492 wrote to memory of 4136	1492	3a8519e4f55bc93a4ffe59460d70499f_JaffaCakes118.exe	86
PID 1492 wrote to memory of 4136	1492	3a8519e4f55bc93a4ffe59460d70499f_JaffaCakes118.exe	86
PID 1492 wrote to memory of 3400	1492	3a8519e4f55bc93a4ffe59460d70499f_JaffaCakes118.exe	88
PID 1492 wrote to memory of 3400	1492	3a8519e4f55bc93a4ffe59460d70499f_JaffaCakes118.exe	88
PID 1492 wrote to memory of 3400	1492	3a8519e4f55bc93a4ffe59460d70499f_JaffaCakes118.exe	88
PID 1492 wrote to memory of 2264	1492	3a8519e4f55bc93a4ffe59460d70499f_JaffaCakes118.exe	90
PID 1492 wrote to memory of 2264	1492	3a8519e4f55bc93a4ffe59460d70499f_JaffaCakes118.exe	90
PID 1492 wrote to memory of 2264	1492	3a8519e4f55bc93a4ffe59460d70499f_JaffaCakes118.exe	90
PID 1492 wrote to memory of 4748	1492	3a8519e4f55bc93a4ffe59460d70499f_JaffaCakes118.exe	92
PID 1492 wrote to memory of 4748	1492	3a8519e4f55bc93a4ffe59460d70499f_JaffaCakes118.exe	92
PID 1492 wrote to memory of 4748	1492	3a8519e4f55bc93a4ffe59460d70499f_JaffaCakes118.exe	92
PID 1492 wrote to memory of 4064	1492	3a8519e4f55bc93a4ffe59460d70499f_JaffaCakes118.exe	94
PID 1492 wrote to memory of 4064	1492	3a8519e4f55bc93a4ffe59460d70499f_JaffaCakes118.exe	94
PID 1492 wrote to memory of 4064	1492	3a8519e4f55bc93a4ffe59460d70499f_JaffaCakes118.exe	94
PID 1492 wrote to memory of 3232	1492	3a8519e4f55bc93a4ffe59460d70499f_JaffaCakes118.exe	97
PID 1492 wrote to memory of 3232	1492	3a8519e4f55bc93a4ffe59460d70499f_JaffaCakes118.exe	97
PID 1492 wrote to memory of 3232	1492	3a8519e4f55bc93a4ffe59460d70499f_JaffaCakes118.exe	97
PID 2968 wrote to memory of 1388	2968	ffcxaria.exe	103
PID 2968 wrote to memory of 1388	2968	ffcxaria.exe	103
PID 2968 wrote to memory of 1388	2968	ffcxaria.exe	103
PID 2968 wrote to memory of 1388	2968	ffcxaria.exe	103
PID 2968 wrote to memory of 1388	2968	ffcxaria.exe	103

C:\Users\Admin\AppData\Local\Temp\3a8519e4f55bc93a4ffe59460d70499f_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\3a8519e4f55bc93a4ffe59460d70499f_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1492
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\gvsnaavu\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4136
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ffcxaria.exe" C:\Windows\SysWOW64\gvsnaavu\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3400
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create gvsnaavu binPath= "C:\Windows\SysWOW64\gvsnaavu\ffcxaria.exe /d\"C:\Users\Admin\AppData\Local\Temp\3a8519e4f55bc93a4ffe59460d70499f_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2264
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description gvsnaavu "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4748
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start gvsnaavu
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4064
- 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:3232
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1492 -s 892
  2⤵
  - Program crash
  PID:876

C:\Windows\SysWOW64\gvsnaavu\ffcxaria.exe
C:\Windows\SysWOW64\gvsnaavu\ffcxaria.exe /d"C:\Users\Admin\AppData\Local\Temp\3a8519e4f55bc93a4ffe59460d70499f_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2968
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1388
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2968 -s 540
  2⤵
  - Program crash
  PID:2664

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 1492 -ip 1492
1⤵
PID:1056

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 2968 -ip 2968
1⤵
PID:4548

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\ffcxaria.exe

Filesize
10.7MB

MD5
1e2a258d6c0f2418ca39a171d38a4d3a

SHA1
b90ab0e371c3d150d072a174d8ab21369cd7ceb5

SHA256
4839321098011e8fcf8a2c730e0ca90ea7d40192bcb306d80dbcb3a74020cbf8

SHA512
6b110032480f704ffbc7a72045446b54d5de0791c4f8e3efad4e7ca99462cb386770c6cb976247d0c46f4037a00b50e024e828129f490a38f83f93d794f30d50

Download Submit
memory/1388-11-0x00000000001C0000-0x00000000001D5000-memory.dmp

Filesize
84KB

Download
memory/1388-13-0x00000000001C0000-0x00000000001D5000-memory.dmp

Filesize
84KB

Download
memory/1388-14-0x00000000001C0000-0x00000000001D5000-memory.dmp

Filesize
84KB

Download
memory/1492-1-0x0000000002D00000-0x0000000002E00000-memory.dmp

Filesize
1024KB

Download
memory/1492-2-0x0000000002E30000-0x0000000002E43000-memory.dmp

Filesize
76KB

Download
memory/1492-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1492-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1492-9-0x0000000002E30000-0x0000000002E43000-memory.dmp

Filesize
76KB

Download
memory/1492-8-0x0000000000400000-0x0000000002C68000-memory.dmp

Filesize
40.4MB

Download
memory/2968-15-0x0000000000400000-0x0000000002C68000-memory.dmp

Filesize
40.4MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads