tofsee | ac3310b8260fc47ddf03699e3efcb700099b2daa4b751f5c0fcaa1abb69643a3

General

Target

e5411982e48ac4e1458b3671a97177fe_JaffaCakes118.exe
Size

12.9MB
MD5

e5411982e48ac4e1458b3671a97177fe
SHA1

1d8b356af353be5708d53527b5c9a09d4f442e94
SHA256

ac3310b8260fc47ddf03699e3efcb700099b2daa4b751f5c0fcaa1abb69643a3
SHA512

fe220b6c34fce251f80ae93d00a6d72f2afa9bd7e078dc76df5eee22102e2dc01cb41cf68fd0b9dabafeb58ea24521e3c80d76082e7a73b5c9d680426d058be2
SSDEEP

24576:ME2llllllllllllllllllllllllllllllllllllllllllllllllllllllllllll/:ME

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
5096	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\czsdbwdb\ImagePath = "C:\\Windows\\SysWOW64\\czsdbwdb\\nzlttetb.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-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	e5411982e48ac4e1458b3671a97177fe_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
448	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1304	nzlttetb.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1304 set thread context of 448	1304	nzlttetb.exe	100

Launches sc.exe 3 IoCs

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

pid	Process
5008	sc.exe
3732	sc.exe
1968	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

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	e5411982e48ac4e1458b3671a97177fe_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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	nzlttetb.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3696 wrote to memory of 4288	3696	e5411982e48ac4e1458b3671a97177fe_JaffaCakes118.exe	82
PID 3696 wrote to memory of 4288	3696	e5411982e48ac4e1458b3671a97177fe_JaffaCakes118.exe	82
PID 3696 wrote to memory of 4288	3696	e5411982e48ac4e1458b3671a97177fe_JaffaCakes118.exe	82
PID 3696 wrote to memory of 4724	3696	e5411982e48ac4e1458b3671a97177fe_JaffaCakes118.exe	84
PID 3696 wrote to memory of 4724	3696	e5411982e48ac4e1458b3671a97177fe_JaffaCakes118.exe	84
PID 3696 wrote to memory of 4724	3696	e5411982e48ac4e1458b3671a97177fe_JaffaCakes118.exe	84
PID 3696 wrote to memory of 5008	3696	e5411982e48ac4e1458b3671a97177fe_JaffaCakes118.exe	86
PID 3696 wrote to memory of 5008	3696	e5411982e48ac4e1458b3671a97177fe_JaffaCakes118.exe	86
PID 3696 wrote to memory of 5008	3696	e5411982e48ac4e1458b3671a97177fe_JaffaCakes118.exe	86
PID 3696 wrote to memory of 3732	3696	e5411982e48ac4e1458b3671a97177fe_JaffaCakes118.exe	88
PID 3696 wrote to memory of 3732	3696	e5411982e48ac4e1458b3671a97177fe_JaffaCakes118.exe	88
PID 3696 wrote to memory of 3732	3696	e5411982e48ac4e1458b3671a97177fe_JaffaCakes118.exe	88
PID 3696 wrote to memory of 1968	3696	e5411982e48ac4e1458b3671a97177fe_JaffaCakes118.exe	92
PID 3696 wrote to memory of 1968	3696	e5411982e48ac4e1458b3671a97177fe_JaffaCakes118.exe	92
PID 3696 wrote to memory of 1968	3696	e5411982e48ac4e1458b3671a97177fe_JaffaCakes118.exe	92
PID 3696 wrote to memory of 5096	3696	e5411982e48ac4e1458b3671a97177fe_JaffaCakes118.exe	95
PID 3696 wrote to memory of 5096	3696	e5411982e48ac4e1458b3671a97177fe_JaffaCakes118.exe	95
PID 3696 wrote to memory of 5096	3696	e5411982e48ac4e1458b3671a97177fe_JaffaCakes118.exe	95
PID 1304 wrote to memory of 448	1304	nzlttetb.exe	100
PID 1304 wrote to memory of 448	1304	nzlttetb.exe	100
PID 1304 wrote to memory of 448	1304	nzlttetb.exe	100
PID 1304 wrote to memory of 448	1304	nzlttetb.exe	100
PID 1304 wrote to memory of 448	1304	nzlttetb.exe	100

C:\Users\Admin\AppData\Local\Temp\e5411982e48ac4e1458b3671a97177fe_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\e5411982e48ac4e1458b3671a97177fe_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3696
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\czsdbwdb\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4288
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\nzlttetb.exe" C:\Windows\SysWOW64\czsdbwdb\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4724
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create czsdbwdb binPath= "C:\Windows\SysWOW64\czsdbwdb\nzlttetb.exe /d\"C:\Users\Admin\AppData\Local\Temp\e5411982e48ac4e1458b3671a97177fe_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:5008
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description czsdbwdb "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3732
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start czsdbwdb
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1968
- 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:5096

C:\Windows\SysWOW64\czsdbwdb\nzlttetb.exe
C:\Windows\SysWOW64\czsdbwdb\nzlttetb.exe /d"C:\Users\Admin\AppData\Local\Temp\e5411982e48ac4e1458b3671a97177fe_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1304
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:448

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\nzlttetb.exe

Filesize
12.0MB

MD5
a92927e3712c3a4e9f09aa72ce8a8913

SHA1
dfc9a2ecf4915a6e52bdabebebee65b93231d527

SHA256
dca0db2f1726aaef150c3cd4af6872ffa39efd609bac24613965afd124358d27

SHA512
e6e78a07ce37b73ad2b26171c1de6e395bd86e8f578b9233318e751b75ff83bc4dc184b69636245630092bda90999b7b17024462512988c221812c75908a0fd4

Download Submit
memory/448-14-0x0000000000570000-0x0000000000585000-memory.dmp

Filesize
84KB

Download
memory/448-19-0x0000000000570000-0x0000000000585000-memory.dmp

Filesize
84KB

Download
memory/448-18-0x0000000000570000-0x0000000000585000-memory.dmp

Filesize
84KB

Download
memory/1304-11-0x0000000000400000-0x00000000004A9000-memory.dmp

Filesize
676KB

Download
memory/1304-12-0x0000000000400000-0x00000000004A9000-memory.dmp

Filesize
676KB

Download
memory/1304-13-0x0000000000400000-0x00000000004A9000-memory.dmp

Filesize
676KB

Download
memory/1304-17-0x0000000000400000-0x00000000004A9000-memory.dmp

Filesize
676KB

Download
memory/3696-9-0x0000000000650000-0x0000000000663000-memory.dmp

Filesize
76KB

Download
memory/3696-8-0x0000000000400000-0x00000000004A9000-memory.dmp

Filesize
676KB

Download
memory/3696-1-0x0000000000690000-0x0000000000790000-memory.dmp

Filesize
1024KB

Download
memory/3696-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3696-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3696-2-0x0000000000650000-0x0000000000663000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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