tofsee | 836c6bce97be22e9866b1a0359dd51e2244739193cfc3ed71f40e36a9e980d69

General

Target

JaffaCakes118_836c6bce97be22e9866b1a0359dd51e2244739193cfc3ed71f40e36a9e980d69.exe
Size

187KB
MD5

84a622e66ce8a6be78794bb4ae7b73af
SHA1

a19e48131196c239779d6c1fa475ec9c19486619
SHA256

836c6bce97be22e9866b1a0359dd51e2244739193cfc3ed71f40e36a9e980d69
SHA512

5bd009834fe2851aaed738d6f9a8762f5b56796edf3b56d44c82dee62e45b4c629c68f8001a28d39c0a90a8c2e59aa7faff7b720d9121c4effe461e5aca480c1
SSDEEP

3072:Zx7HITMYRZawv2fas1CoDpN/k9mMb122xhZ3kRtqI/nhcpZa9uD6Vdyhkk:ZZ6MYRZawv2fasfDppk0c1zhAtlKwVf

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

quadoil.ru

lakeflex.ru

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
4972	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\iaeyseqh\ImagePath = "C:\\Windows\\SysWOW64\\iaeyseqh\\gtczafre.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_836c6bce97be22e9866b1a0359dd51e2244739193cfc3ed71f40e36a9e980d69.exe

Deletes itself 1 IoCs

pid	Process
2568	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1384	gtczafre.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1384 set thread context of 2568	1384	gtczafre.exe	96

Launches sc.exe 3 IoCs

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

pid	Process
4000	sc.exe
3212	sc.exe
2740	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 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

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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	gtczafre.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_836c6bce97be22e9866b1a0359dd51e2244739193cfc3ed71f40e36a9e980d69.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	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2320 wrote to memory of 1196	2320	JaffaCakes118_836c6bce97be22e9866b1a0359dd51e2244739193cfc3ed71f40e36a9e980d69.exe	83
PID 2320 wrote to memory of 1196	2320	JaffaCakes118_836c6bce97be22e9866b1a0359dd51e2244739193cfc3ed71f40e36a9e980d69.exe	83
PID 2320 wrote to memory of 1196	2320	JaffaCakes118_836c6bce97be22e9866b1a0359dd51e2244739193cfc3ed71f40e36a9e980d69.exe	83
PID 2320 wrote to memory of 2680	2320	JaffaCakes118_836c6bce97be22e9866b1a0359dd51e2244739193cfc3ed71f40e36a9e980d69.exe	85
PID 2320 wrote to memory of 2680	2320	JaffaCakes118_836c6bce97be22e9866b1a0359dd51e2244739193cfc3ed71f40e36a9e980d69.exe	85
PID 2320 wrote to memory of 2680	2320	JaffaCakes118_836c6bce97be22e9866b1a0359dd51e2244739193cfc3ed71f40e36a9e980d69.exe	85
PID 2320 wrote to memory of 3212	2320	JaffaCakes118_836c6bce97be22e9866b1a0359dd51e2244739193cfc3ed71f40e36a9e980d69.exe	87
PID 2320 wrote to memory of 3212	2320	JaffaCakes118_836c6bce97be22e9866b1a0359dd51e2244739193cfc3ed71f40e36a9e980d69.exe	87
PID 2320 wrote to memory of 3212	2320	JaffaCakes118_836c6bce97be22e9866b1a0359dd51e2244739193cfc3ed71f40e36a9e980d69.exe	87
PID 2320 wrote to memory of 2740	2320	JaffaCakes118_836c6bce97be22e9866b1a0359dd51e2244739193cfc3ed71f40e36a9e980d69.exe	89
PID 2320 wrote to memory of 2740	2320	JaffaCakes118_836c6bce97be22e9866b1a0359dd51e2244739193cfc3ed71f40e36a9e980d69.exe	89
PID 2320 wrote to memory of 2740	2320	JaffaCakes118_836c6bce97be22e9866b1a0359dd51e2244739193cfc3ed71f40e36a9e980d69.exe	89
PID 2320 wrote to memory of 4000	2320	JaffaCakes118_836c6bce97be22e9866b1a0359dd51e2244739193cfc3ed71f40e36a9e980d69.exe	91
PID 2320 wrote to memory of 4000	2320	JaffaCakes118_836c6bce97be22e9866b1a0359dd51e2244739193cfc3ed71f40e36a9e980d69.exe	91
PID 2320 wrote to memory of 4000	2320	JaffaCakes118_836c6bce97be22e9866b1a0359dd51e2244739193cfc3ed71f40e36a9e980d69.exe	91
PID 2320 wrote to memory of 4972	2320	JaffaCakes118_836c6bce97be22e9866b1a0359dd51e2244739193cfc3ed71f40e36a9e980d69.exe	94
PID 2320 wrote to memory of 4972	2320	JaffaCakes118_836c6bce97be22e9866b1a0359dd51e2244739193cfc3ed71f40e36a9e980d69.exe	94
PID 2320 wrote to memory of 4972	2320	JaffaCakes118_836c6bce97be22e9866b1a0359dd51e2244739193cfc3ed71f40e36a9e980d69.exe	94
PID 1384 wrote to memory of 2568	1384	gtczafre.exe	96
PID 1384 wrote to memory of 2568	1384	gtczafre.exe	96
PID 1384 wrote to memory of 2568	1384	gtczafre.exe	96
PID 1384 wrote to memory of 2568	1384	gtczafre.exe	96
PID 1384 wrote to memory of 2568	1384	gtczafre.exe	96

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_836c6bce97be22e9866b1a0359dd51e2244739193cfc3ed71f40e36a9e980d69.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_836c6bce97be22e9866b1a0359dd51e2244739193cfc3ed71f40e36a9e980d69.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2320
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\iaeyseqh\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1196
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\gtczafre.exe" C:\Windows\SysWOW64\iaeyseqh\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2680
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create iaeyseqh binPath= "C:\Windows\SysWOW64\iaeyseqh\gtczafre.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_836c6bce97be22e9866b1a0359dd51e2244739193cfc3ed71f40e36a9e980d69.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3212
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description iaeyseqh "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2740
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start iaeyseqh
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4000
- 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:4972

C:\Windows\SysWOW64\iaeyseqh\gtczafre.exe
C:\Windows\SysWOW64\iaeyseqh\gtczafre.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_836c6bce97be22e9866b1a0359dd51e2244739193cfc3ed71f40e36a9e980d69.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1384
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2568

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\gtczafre.exe

Filesize
12.1MB

MD5
809c47080fd69af1ebd66d18050a3e8e

SHA1
fd60a0f47ec58d1df511bca4a3531d126ab9c784

SHA256
f3f0931fcc068d64026d70af612be8a9c86cef80c826fbd71ff12bc01e24dc0a

SHA512
0f3e9fb7a56f487c96d6e102a837fd17e1006823e1230aced4e26cb88e78780418dd56e40816599e610b5f5928519101783d971ca3acdba9e99486541750baae

Download Submit
memory/1384-11-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1384-10-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1384-16-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2320-2-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2320-1-0x00000000021A0000-0x00000000021B3000-memory.dmp

Filesize
76KB

Download
memory/2320-6-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2320-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2320-8-0x00000000021A0000-0x00000000021B3000-memory.dmp

Filesize
76KB

Download
memory/2320-7-0x0000000000450000-0x000000000045D000-memory.dmp

Filesize
52KB

Download
memory/2320-0-0x0000000000450000-0x000000000045D000-memory.dmp

Filesize
52KB

Download
memory/2568-12-0x00000000004E0000-0x00000000004F5000-memory.dmp

Filesize
84KB

Download
memory/2568-15-0x00000000004E0000-0x00000000004F5000-memory.dmp

Filesize
84KB

Download
memory/2568-17-0x00000000004E0000-0x00000000004F5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads