tofsee | 12ebfa7f053cf8a58825e9ebf857f56c64825bcb2f99e79d169bd536d7b4b112

General

Target

305372743bc24f803c3e16da163b3864_JaffaCakes118.exe
Size

12.8MB
MD5

305372743bc24f803c3e16da163b3864
SHA1

14bdf942d5a8d5f6e6ccbd6b11e8c9ea0ef41725
SHA256

12ebfa7f053cf8a58825e9ebf857f56c64825bcb2f99e79d169bd536d7b4b112
SHA512

e87336ba7fdad70a5ddb5360e0048bdd7d536fe8a7317e3ad6e2103e763cb560d2b8cd55e1b2c67116d4fc31a842dde5f47ddbd5fd33f9ee475da1fadf57fa33
SSDEEP

6144:zJuDszifRNFwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwww3:Nubf7

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

43.231.4.7

lazystax.ru

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

3076 netsh.exe

pid	process
3076	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\pkjknkd\ImagePath = "C:\\Windows\\SysWOW64\\pkjknkd\\ieyekmev.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:

305372743bc24f803c3e16da163b3864_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	305372743bc24f803c3e16da163b3864_JaffaCakes118.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

3784 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

ieyekmev.exe

pid process

5076 ieyekmev.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

ieyekmev.exe

description pid process target process

PID 5076 set thread context of 3784 5076 ieyekmev.exe svchost.exe
Launches sc.exe 3 IoCs
Sc.exe is a Windows utlilty to control services on the system.

Processes:

sc.exesc.exesc.exe

pid process

5096 sc.exe
3012 sc.exe
3520 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
3784	svchost.exe

pid	process
5076	ieyekmev.exe

description	pid	process	target process
PID 5076 set thread context of 3784	5076	ieyekmev.exe	svchost.exe

pid	process
5096	sc.exe
3012	sc.exe
3520	sc.exe

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 queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\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

Processes:

svchost.exe305372743bc24f803c3e16da163b3864_JaffaCakes118.execmd.exesc.exeieyekmev.exenetsh.execmd.exesc.exesc.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	305372743bc24f803c3e16da163b3864_JaffaCakes118.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	ieyekmev.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.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

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

305372743bc24f803c3e16da163b3864_JaffaCakes118.exeieyekmev.exe

description	pid	process	target process
PID 1256 wrote to memory of 316	1256	305372743bc24f803c3e16da163b3864_JaffaCakes118.exe	cmd.exe
PID 1256 wrote to memory of 316	1256	305372743bc24f803c3e16da163b3864_JaffaCakes118.exe	cmd.exe
PID 1256 wrote to memory of 316	1256	305372743bc24f803c3e16da163b3864_JaffaCakes118.exe	cmd.exe
PID 1256 wrote to memory of 4324	1256	305372743bc24f803c3e16da163b3864_JaffaCakes118.exe	cmd.exe
PID 1256 wrote to memory of 4324	1256	305372743bc24f803c3e16da163b3864_JaffaCakes118.exe	cmd.exe
PID 1256 wrote to memory of 4324	1256	305372743bc24f803c3e16da163b3864_JaffaCakes118.exe	cmd.exe
PID 1256 wrote to memory of 5096	1256	305372743bc24f803c3e16da163b3864_JaffaCakes118.exe	sc.exe
PID 1256 wrote to memory of 5096	1256	305372743bc24f803c3e16da163b3864_JaffaCakes118.exe	sc.exe
PID 1256 wrote to memory of 5096	1256	305372743bc24f803c3e16da163b3864_JaffaCakes118.exe	sc.exe
PID 1256 wrote to memory of 3012	1256	305372743bc24f803c3e16da163b3864_JaffaCakes118.exe	sc.exe
PID 1256 wrote to memory of 3012	1256	305372743bc24f803c3e16da163b3864_JaffaCakes118.exe	sc.exe
PID 1256 wrote to memory of 3012	1256	305372743bc24f803c3e16da163b3864_JaffaCakes118.exe	sc.exe
PID 1256 wrote to memory of 3520	1256	305372743bc24f803c3e16da163b3864_JaffaCakes118.exe	sc.exe
PID 1256 wrote to memory of 3520	1256	305372743bc24f803c3e16da163b3864_JaffaCakes118.exe	sc.exe
PID 1256 wrote to memory of 3520	1256	305372743bc24f803c3e16da163b3864_JaffaCakes118.exe	sc.exe
PID 1256 wrote to memory of 3076	1256	305372743bc24f803c3e16da163b3864_JaffaCakes118.exe	netsh.exe
PID 1256 wrote to memory of 3076	1256	305372743bc24f803c3e16da163b3864_JaffaCakes118.exe	netsh.exe
PID 1256 wrote to memory of 3076	1256	305372743bc24f803c3e16da163b3864_JaffaCakes118.exe	netsh.exe
PID 5076 wrote to memory of 3784	5076	ieyekmev.exe	svchost.exe
PID 5076 wrote to memory of 3784	5076	ieyekmev.exe	svchost.exe
PID 5076 wrote to memory of 3784	5076	ieyekmev.exe	svchost.exe
PID 5076 wrote to memory of 3784	5076	ieyekmev.exe	svchost.exe
PID 5076 wrote to memory of 3784	5076	ieyekmev.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\305372743bc24f803c3e16da163b3864_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\305372743bc24f803c3e16da163b3864_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1256

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\pkjknkd\
2⤵
- System Location Discovery: System Language Discovery
PID:316

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ieyekmev.exe" C:\Windows\SysWOW64\pkjknkd\
2⤵
- System Location Discovery: System Language Discovery
PID:4324

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create pkjknkd binPath= "C:\Windows\SysWOW64\pkjknkd\ieyekmev.exe /d\"C:\Users\Admin\AppData\Local\Temp\305372743bc24f803c3e16da163b3864_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
- System Location Discovery: System Language Discovery
PID:5096

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description pkjknkd "wifi internet conection"
2⤵
- Launches sc.exe
- System Location Discovery: System Language Discovery
PID:3012

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start pkjknkd
2⤵
- Launches sc.exe
- System Location Discovery: System Language Discovery
PID:3520

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:3076

C:\Windows\SysWOW64\pkjknkd\ieyekmev.exe
C:\Windows\SysWOW64\pkjknkd\ieyekmev.exe /d"C:\Users\Admin\AppData\Local\Temp\305372743bc24f803c3e16da163b3864_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5076

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Sets service image path in registry
- Deletes itself
- System Location Discovery: System Language Discovery
PID:3784

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\ieyekmev.exe

Filesize
13.7MB

MD5
501f0419b50e53e7523061ef6cd6f267

SHA1
69fff015a071fefef00d9d521ede7765c5108bc3

SHA256
0013c765fde00939e8472df14f3a3f548cd65dfdedd5b4f5e694adc992019cf6

SHA512
64eeb26a1e0a031b42fd84ba5861096654f4207a93ab550d879dcf5c7d71659fcbb97f36109ce544672cc53e5698d418d6715cc74c15218d4349e01c85f6f21f

Download Submit
memory/1256-0-0x00000000007B0000-0x00000000007B1000-memory.dmp

Filesize
4KB

Download
memory/1256-2-0x00000000009C0000-0x00000000009C1000-memory.dmp

Filesize
4KB

Download
memory/1256-1-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/1256-8-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/3784-9-0x00000000007A0000-0x00000000007B5000-memory.dmp

Filesize
84KB

Download
memory/3784-12-0x00000000007A0000-0x00000000007B5000-memory.dmp

Filesize
84KB

Download
memory/3784-14-0x00000000007A0000-0x00000000007B5000-memory.dmp

Filesize
84KB

Download
memory/3784-15-0x00000000007A0000-0x00000000007B5000-memory.dmp

Filesize
84KB

Download
memory/3784-16-0x00000000007A0000-0x00000000007B5000-memory.dmp

Filesize
84KB

Download
memory/5076-7-0x00000000004A0000-0x00000000004A1000-memory.dmp

Filesize
4KB

Download
memory/5076-13-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads