tofsee | a1661500b108adc16b7016f26353aa6dc0bd166694245a7cbb18d477c25cbc1f

General

Target

023aa226acf2890e914227dab936988c_JaffaCakes118.exe
Size

11.8MB
MD5

023aa226acf2890e914227dab936988c
SHA1

93d78f4bb8d0d12f3390b8d6c2643da373d80bc4
SHA256

a1661500b108adc16b7016f26353aa6dc0bd166694245a7cbb18d477c25cbc1f
SHA512

a492c3fd3e733822468908de6b75894c8cb7794796719c95593a3f9f0d1a33e14d4a8c35e29671f6b95d635cd9c1ea4ead1c1e52902859ab1e65c3f72eef79c9
SSDEEP

6144:Wvk9RADRUv1CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC6:/RAD

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

2092 netsh.exe

pid	process
2092	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\ghvaqjru\ImagePath = "C:\\Windows\\SysWOW64\\ghvaqjru\\uhvyaayl.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:

023aa226acf2890e914227dab936988c_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2392887640-1187051047-2909758433-1000\Control Panel\International\Geo\Nation	023aa226acf2890e914227dab936988c_JaffaCakes118.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

1672 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

uhvyaayl.exe

pid process

2096 uhvyaayl.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

uhvyaayl.exe

description pid process target process

PID 2096 set thread context of 1672 2096 uhvyaayl.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

1960 sc.exe
4784 sc.exe
2648 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
1672	svchost.exe

pid	process
2096	uhvyaayl.exe

description	pid	process	target process
PID 2096 set thread context of 1672	2096	uhvyaayl.exe	svchost.exe

pid	process
1960	sc.exe
4784	sc.exe
2648	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 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

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:

023aa226acf2890e914227dab936988c_JaffaCakes118.execmd.exeuhvyaayl.exesvchost.execmd.exesc.exesc.exesc.exenetsh.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	023aa226acf2890e914227dab936988c_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	uhvyaayl.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

023aa226acf2890e914227dab936988c_JaffaCakes118.exeuhvyaayl.exe

description	pid	process	target process
PID 1624 wrote to memory of 5060	1624	023aa226acf2890e914227dab936988c_JaffaCakes118.exe	cmd.exe
PID 1624 wrote to memory of 5060	1624	023aa226acf2890e914227dab936988c_JaffaCakes118.exe	cmd.exe
PID 1624 wrote to memory of 5060	1624	023aa226acf2890e914227dab936988c_JaffaCakes118.exe	cmd.exe
PID 1624 wrote to memory of 516	1624	023aa226acf2890e914227dab936988c_JaffaCakes118.exe	cmd.exe
PID 1624 wrote to memory of 516	1624	023aa226acf2890e914227dab936988c_JaffaCakes118.exe	cmd.exe
PID 1624 wrote to memory of 516	1624	023aa226acf2890e914227dab936988c_JaffaCakes118.exe	cmd.exe
PID 1624 wrote to memory of 1960	1624	023aa226acf2890e914227dab936988c_JaffaCakes118.exe	sc.exe
PID 1624 wrote to memory of 1960	1624	023aa226acf2890e914227dab936988c_JaffaCakes118.exe	sc.exe
PID 1624 wrote to memory of 1960	1624	023aa226acf2890e914227dab936988c_JaffaCakes118.exe	sc.exe
PID 1624 wrote to memory of 4784	1624	023aa226acf2890e914227dab936988c_JaffaCakes118.exe	sc.exe
PID 1624 wrote to memory of 4784	1624	023aa226acf2890e914227dab936988c_JaffaCakes118.exe	sc.exe
PID 1624 wrote to memory of 4784	1624	023aa226acf2890e914227dab936988c_JaffaCakes118.exe	sc.exe
PID 1624 wrote to memory of 2648	1624	023aa226acf2890e914227dab936988c_JaffaCakes118.exe	sc.exe
PID 1624 wrote to memory of 2648	1624	023aa226acf2890e914227dab936988c_JaffaCakes118.exe	sc.exe
PID 1624 wrote to memory of 2648	1624	023aa226acf2890e914227dab936988c_JaffaCakes118.exe	sc.exe
PID 2096 wrote to memory of 1672	2096	uhvyaayl.exe	svchost.exe
PID 2096 wrote to memory of 1672	2096	uhvyaayl.exe	svchost.exe
PID 2096 wrote to memory of 1672	2096	uhvyaayl.exe	svchost.exe
PID 2096 wrote to memory of 1672	2096	uhvyaayl.exe	svchost.exe
PID 2096 wrote to memory of 1672	2096	uhvyaayl.exe	svchost.exe
PID 1624 wrote to memory of 2092	1624	023aa226acf2890e914227dab936988c_JaffaCakes118.exe	netsh.exe
PID 1624 wrote to memory of 2092	1624	023aa226acf2890e914227dab936988c_JaffaCakes118.exe	netsh.exe
PID 1624 wrote to memory of 2092	1624	023aa226acf2890e914227dab936988c_JaffaCakes118.exe	netsh.exe

C:\Users\Admin\AppData\Local\Temp\023aa226acf2890e914227dab936988c_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\023aa226acf2890e914227dab936988c_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1624
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ghvaqjru\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:5060
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\uhvyaayl.exe" C:\Windows\SysWOW64\ghvaqjru\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:516
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create ghvaqjru binPath= "C:\Windows\SysWOW64\ghvaqjru\uhvyaayl.exe /d\"C:\Users\Admin\AppData\Local\Temp\023aa226acf2890e914227dab936988c_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1960
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description ghvaqjru "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4784
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start ghvaqjru
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2648
- 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:2092

C:\Windows\SysWOW64\ghvaqjru\uhvyaayl.exe
C:\Windows\SysWOW64\ghvaqjru\uhvyaayl.exe /d"C:\Users\Admin\AppData\Local\Temp\023aa226acf2890e914227dab936988c_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2096
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1672

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\uhvyaayl.exe

Filesize
14.5MB

MD5
fc0168f1251de6e86660f583eb92ba00

SHA1
a07581ae386f4b810410c6c9b131802f08db1607

SHA256
4368a46ca10faf4bc241e270f5d2097f03553e19d317f5c4e8d6b140fceaf11d

SHA512
fbc8ec4cf72f5452e85f0fe811527fa988dbac5713d7c6626a4873fd4c654b50715d99e876258dc6f9695097fc38ddad248a349d46fa55d131dd972820ed2b9b

Download Submit
memory/1624-0-0x00000000006C0000-0x00000000006C1000-memory.dmp

Filesize
4KB

Download
memory/1624-1-0x00000000006D0000-0x00000000006D1000-memory.dmp

Filesize
4KB

Download
memory/1624-2-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/1624-13-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/1672-8-0x0000000000A80000-0x0000000000A95000-memory.dmp

Filesize
84KB

Download
memory/1672-12-0x0000000000A80000-0x0000000000A95000-memory.dmp

Filesize
84KB

Download
memory/1672-14-0x0000000000A80000-0x0000000000A95000-memory.dmp

Filesize
84KB

Download
memory/1672-15-0x0000000000A80000-0x0000000000A95000-memory.dmp

Filesize
84KB

Download
memory/1672-16-0x0000000000A80000-0x0000000000A95000-memory.dmp

Filesize
84KB

Download
memory/2096-7-0x0000000000860000-0x0000000000861000-memory.dmp

Filesize
4KB

Download
memory/2096-11-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads