tofsee | ca2ce6433e4e6bd1587a16aabf7c4fd49d45e3aa36acf99bda30a07c81966500

General

Target

45bd4a3c341ab81c70f1fdc136bc77e4_JaffaCakes118.exe
Size

11.4MB
MD5

45bd4a3c341ab81c70f1fdc136bc77e4
SHA1

fe6c5d998a976a2b37204a02aba4933fc5e349e9
SHA256

ca2ce6433e4e6bd1587a16aabf7c4fd49d45e3aa36acf99bda30a07c81966500
SHA512

77f9b9a77f35b8fc686a60fb53acfa642555d085dbbad107481a82e1d4d16044ab485923c0d9d6020dbccd8d67dbd836620d6395632ad5b993b6987e02ecd002
SSDEEP

3072:bHZQIswULGiBqwZyNvXT/u22H/PaAf209fB7epgDnESzN57I6ZibkFah/NleJm/6:bHZQItUDBJiPT/u22H3s0DhcHU4l

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

Processes:

netsh.exe

pid	Process
3436	netsh.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\nmpbzvum\ImagePath = "C:\\Windows\\SysWOW64\\nmpbzvum\\bzjhhxgw.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

Processes:

45bd4a3c341ab81c70f1fdc136bc77e4_JaffaCakes118.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation	45bd4a3c341ab81c70f1fdc136bc77e4_JaffaCakes118.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid	Process
4256	svchost.exe

Executes dropped EXE 1 IoCs

Processes:

bzjhhxgw.exe

pid	Process
3060	bzjhhxgw.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

bzjhhxgw.exe

description	pid	Process	procid_target
PID 3060 set thread context of 4256	3060	bzjhhxgw.exe	107

Launches sc.exe 3 IoCs

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

Processes:

sc.exesc.exesc.exe

pid	Process
3148	sc.exe
672	sc.exe
4136	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

Processes:

netsh.exe

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

Processes:

WerFault.exeWerFault.exe

pid	pid_target	Process	procid_target
4832	1492	WerFault.exe	83
916	3060	WerFault.exe	99

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

Processes:

45bd4a3c341ab81c70f1fdc136bc77e4_JaffaCakes118.execmd.execmd.exenetsh.exebzjhhxgw.exesc.exesc.exesc.exesvchost.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	45bd4a3c341ab81c70f1fdc136bc77e4_JaffaCakes118.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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	bzjhhxgw.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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

45bd4a3c341ab81c70f1fdc136bc77e4_JaffaCakes118.exebzjhhxgw.exe

description	pid	Process	procid_target
PID 1492 wrote to memory of 1540	1492	45bd4a3c341ab81c70f1fdc136bc77e4_JaffaCakes118.exe	87
PID 1492 wrote to memory of 1540	1492	45bd4a3c341ab81c70f1fdc136bc77e4_JaffaCakes118.exe	87
PID 1492 wrote to memory of 1540	1492	45bd4a3c341ab81c70f1fdc136bc77e4_JaffaCakes118.exe	87
PID 1492 wrote to memory of 1204	1492	45bd4a3c341ab81c70f1fdc136bc77e4_JaffaCakes118.exe	89
PID 1492 wrote to memory of 1204	1492	45bd4a3c341ab81c70f1fdc136bc77e4_JaffaCakes118.exe	89
PID 1492 wrote to memory of 1204	1492	45bd4a3c341ab81c70f1fdc136bc77e4_JaffaCakes118.exe	89
PID 1492 wrote to memory of 672	1492	45bd4a3c341ab81c70f1fdc136bc77e4_JaffaCakes118.exe	91
PID 1492 wrote to memory of 672	1492	45bd4a3c341ab81c70f1fdc136bc77e4_JaffaCakes118.exe	91
PID 1492 wrote to memory of 672	1492	45bd4a3c341ab81c70f1fdc136bc77e4_JaffaCakes118.exe	91
PID 1492 wrote to memory of 4136	1492	45bd4a3c341ab81c70f1fdc136bc77e4_JaffaCakes118.exe	95
PID 1492 wrote to memory of 4136	1492	45bd4a3c341ab81c70f1fdc136bc77e4_JaffaCakes118.exe	95
PID 1492 wrote to memory of 4136	1492	45bd4a3c341ab81c70f1fdc136bc77e4_JaffaCakes118.exe	95
PID 1492 wrote to memory of 3148	1492	45bd4a3c341ab81c70f1fdc136bc77e4_JaffaCakes118.exe	97
PID 1492 wrote to memory of 3148	1492	45bd4a3c341ab81c70f1fdc136bc77e4_JaffaCakes118.exe	97
PID 1492 wrote to memory of 3148	1492	45bd4a3c341ab81c70f1fdc136bc77e4_JaffaCakes118.exe	97
PID 1492 wrote to memory of 3436	1492	45bd4a3c341ab81c70f1fdc136bc77e4_JaffaCakes118.exe	101
PID 1492 wrote to memory of 3436	1492	45bd4a3c341ab81c70f1fdc136bc77e4_JaffaCakes118.exe	101
PID 1492 wrote to memory of 3436	1492	45bd4a3c341ab81c70f1fdc136bc77e4_JaffaCakes118.exe	101
PID 3060 wrote to memory of 4256	3060	bzjhhxgw.exe	107
PID 3060 wrote to memory of 4256	3060	bzjhhxgw.exe	107
PID 3060 wrote to memory of 4256	3060	bzjhhxgw.exe	107
PID 3060 wrote to memory of 4256	3060	bzjhhxgw.exe	107
PID 3060 wrote to memory of 4256	3060	bzjhhxgw.exe	107

C:\Users\Admin\AppData\Local\Temp\45bd4a3c341ab81c70f1fdc136bc77e4_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\45bd4a3c341ab81c70f1fdc136bc77e4_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\nmpbzvum\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1540
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\bzjhhxgw.exe" C:\Windows\SysWOW64\nmpbzvum\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1204
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create nmpbzvum binPath= "C:\Windows\SysWOW64\nmpbzvum\bzjhhxgw.exe /d\"C:\Users\Admin\AppData\Local\Temp\45bd4a3c341ab81c70f1fdc136bc77e4_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:672
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description nmpbzvum "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4136
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start nmpbzvum
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3148
- 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:3436
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1492 -s 668
  2⤵
  - Program crash
  PID:4832

C:\Windows\SysWOW64\nmpbzvum\bzjhhxgw.exe
C:\Windows\SysWOW64\nmpbzvum\bzjhhxgw.exe /d"C:\Users\Admin\AppData\Local\Temp\45bd4a3c341ab81c70f1fdc136bc77e4_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3060
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4256
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3060 -s 512
  2⤵
  - Program crash
  PID:916

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 1492 -ip 1492
1⤵
PID:1764

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 196 -p 3060 -ip 3060
1⤵
PID:2752

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\bzjhhxgw.exe

Filesize
12.5MB

MD5
f251f9c6df486bc601f419deac13827a

SHA1
c94e2c916e5895bb5b724910e153b5981a7e5455

SHA256
7a5ae32e74b7fededd288d2a9983d8b84064596df9c03ded43c59f3778fd28d3

SHA512
8f272eb75d6338ddb0bf70fcf1648a5536720168707d4fbf95a74a7958de016583361038d4cf4b2846129057d4d1f36eb394ade0832a82d6bc2943910c4b5575

Download Submit
memory/1492-8-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

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

Filesize
84KB

Download
memory/1492-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

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

Filesize
84KB

Download
memory/1492-9-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/1492-1-0x0000000000560000-0x0000000000660000-memory.dmp

Filesize
1024KB

Download
memory/3060-11-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/3060-12-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/3060-18-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/4256-13-0x0000000000F00000-0x0000000000F15000-memory.dmp

Filesize
84KB

Download
memory/4256-15-0x0000000000F00000-0x0000000000F15000-memory.dmp

Filesize
84KB

Download
memory/4256-16-0x0000000000F00000-0x0000000000F15000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads