tofsee | 52d959c6afd889d69fe66d351a34769888c62ce16a140cac88b1303bd772dc5e

General

Target

JaffaCakes118_6e734800376974cd4fbe0fbc91e0a138.exe
Size

14.6MB
MD5

6e734800376974cd4fbe0fbc91e0a138
SHA1

7711d0bc3c0e82526029b67473cc5ee222933497
SHA256

52d959c6afd889d69fe66d351a34769888c62ce16a140cac88b1303bd772dc5e
SHA512

911b78fc44b16cd3e3337a320513081dd65f0dd671b1847c35187e3b7ea9603f0f16d869fb355cecffc6f22d02b4b1212a9fa3151bdc361b790cd648cd374c86
SSDEEP

98304:8wfDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDr:8w

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
2396	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\xuzejmer\ImagePath = "C:\\Windows\\SysWOW64\\xuzejmer\\zgjhiiym.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_6e734800376974cd4fbe0fbc91e0a138.exe

Deletes itself 1 IoCs

pid	Process
1596	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3288	zgjhiiym.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3288 set thread context of 1596	3288	zgjhiiym.exe	102

Launches sc.exe 3 IoCs

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

pid	Process
4532	sc.exe
1504	sc.exe
1676	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
3080	3780	WerFault.exe	84
1424	3288	WerFault.exe	95

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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	zgjhiiym.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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_6e734800376974cd4fbe0fbc91e0a138.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3780 wrote to memory of 1132	3780	JaffaCakes118_6e734800376974cd4fbe0fbc91e0a138.exe	85
PID 3780 wrote to memory of 1132	3780	JaffaCakes118_6e734800376974cd4fbe0fbc91e0a138.exe	85
PID 3780 wrote to memory of 1132	3780	JaffaCakes118_6e734800376974cd4fbe0fbc91e0a138.exe	85
PID 3780 wrote to memory of 3320	3780	JaffaCakes118_6e734800376974cd4fbe0fbc91e0a138.exe	87
PID 3780 wrote to memory of 3320	3780	JaffaCakes118_6e734800376974cd4fbe0fbc91e0a138.exe	87
PID 3780 wrote to memory of 3320	3780	JaffaCakes118_6e734800376974cd4fbe0fbc91e0a138.exe	87
PID 3780 wrote to memory of 4532	3780	JaffaCakes118_6e734800376974cd4fbe0fbc91e0a138.exe	89
PID 3780 wrote to memory of 4532	3780	JaffaCakes118_6e734800376974cd4fbe0fbc91e0a138.exe	89
PID 3780 wrote to memory of 4532	3780	JaffaCakes118_6e734800376974cd4fbe0fbc91e0a138.exe	89
PID 3780 wrote to memory of 1504	3780	JaffaCakes118_6e734800376974cd4fbe0fbc91e0a138.exe	91
PID 3780 wrote to memory of 1504	3780	JaffaCakes118_6e734800376974cd4fbe0fbc91e0a138.exe	91
PID 3780 wrote to memory of 1504	3780	JaffaCakes118_6e734800376974cd4fbe0fbc91e0a138.exe	91
PID 3780 wrote to memory of 1676	3780	JaffaCakes118_6e734800376974cd4fbe0fbc91e0a138.exe	93
PID 3780 wrote to memory of 1676	3780	JaffaCakes118_6e734800376974cd4fbe0fbc91e0a138.exe	93
PID 3780 wrote to memory of 1676	3780	JaffaCakes118_6e734800376974cd4fbe0fbc91e0a138.exe	93
PID 3780 wrote to memory of 2396	3780	JaffaCakes118_6e734800376974cd4fbe0fbc91e0a138.exe	96
PID 3780 wrote to memory of 2396	3780	JaffaCakes118_6e734800376974cd4fbe0fbc91e0a138.exe	96
PID 3780 wrote to memory of 2396	3780	JaffaCakes118_6e734800376974cd4fbe0fbc91e0a138.exe	96
PID 3288 wrote to memory of 1596	3288	zgjhiiym.exe	102
PID 3288 wrote to memory of 1596	3288	zgjhiiym.exe	102
PID 3288 wrote to memory of 1596	3288	zgjhiiym.exe	102
PID 3288 wrote to memory of 1596	3288	zgjhiiym.exe	102
PID 3288 wrote to memory of 1596	3288	zgjhiiym.exe	102

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6e734800376974cd4fbe0fbc91e0a138.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6e734800376974cd4fbe0fbc91e0a138.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3780
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\xuzejmer\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1132
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\zgjhiiym.exe" C:\Windows\SysWOW64\xuzejmer\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3320
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create xuzejmer binPath= "C:\Windows\SysWOW64\xuzejmer\zgjhiiym.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6e734800376974cd4fbe0fbc91e0a138.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4532
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description xuzejmer "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1504
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start xuzejmer
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1676
- 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:2396
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3780 -s 672
  2⤵
  - Program crash
  PID:3080

C:\Windows\SysWOW64\xuzejmer\zgjhiiym.exe
C:\Windows\SysWOW64\xuzejmer\zgjhiiym.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6e734800376974cd4fbe0fbc91e0a138.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3288
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1596
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3288 -s 556
  2⤵
  - Program crash
  PID:1424

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 3780 -ip 3780
1⤵
PID:4688

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 3288 -ip 3288
1⤵
PID:1460

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\zgjhiiym.exe

Filesize
13.4MB

MD5
fc186ed3e0eff98ad73d572a8284b130

SHA1
e7081e89aced95e24b09b9022af0a53a1bea51ef

SHA256
e874208fcf4365b5b465d1455841fb707a4aafc0c6ef96b38f959b210b6bbad7

SHA512
42a3c2065650ac05141845861e7bdb8d2fa836c5871f823864f7fefc12e0ad17f25e4571c13a79ce73cf25fa18014211e66e21028d71bcc9764dcd61e0896316

Download Submit
memory/1596-14-0x0000000001270000-0x0000000001285000-memory.dmp

Filesize
84KB

Download
memory/1596-17-0x0000000001270000-0x0000000001285000-memory.dmp

Filesize
84KB

Download
memory/1596-16-0x0000000001270000-0x0000000001285000-memory.dmp

Filesize
84KB

Download
memory/3288-13-0x0000000000400000-0x0000000000446000-memory.dmp

Filesize
280KB

Download
memory/3288-12-0x0000000000400000-0x0000000000446000-memory.dmp

Filesize
280KB

Download
memory/3288-11-0x0000000000400000-0x0000000000446000-memory.dmp

Filesize
280KB

Download
memory/3288-18-0x0000000000400000-0x0000000000446000-memory.dmp

Filesize
280KB

Download
memory/3780-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3780-9-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/3780-1-0x0000000000450000-0x0000000000550000-memory.dmp

Filesize
1024KB

Download
memory/3780-8-0x0000000000400000-0x0000000000446000-memory.dmp

Filesize
280KB

Download
memory/3780-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3780-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads