tofsee | 2ee579a9f9ebf574254c0da0f2a45fbff896e7864e3b40f95f826943e6f0213b

General

Target

JaffaCakes118_7c2a38a540f8fc122b16114bf6d252fa.exe
Size

12.2MB
MD5

7c2a38a540f8fc122b16114bf6d252fa
SHA1

6db7d9c26da4e59d8b32a7e64332b3c00b05d2b8
SHA256

2ee579a9f9ebf574254c0da0f2a45fbff896e7864e3b40f95f826943e6f0213b
SHA512

8dd997262da18500f24b8a3bbe04f62e18dbb2f4d3f74f21542cf01c6f02fe60fd0d779b92d60047cc70750f0f640f0fcae82795d02297955315457b53d4fa9f
SSDEEP

49152:PtRCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCf:V

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
2376	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\zmchkhup\ImagePath = "C:\\Windows\\SysWOW64\\zmchkhup\\qafszuti.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-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	JaffaCakes118_7c2a38a540f8fc122b16114bf6d252fa.exe

Deletes itself 1 IoCs

pid	Process
400	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2524	qafszuti.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2524 set thread context of 400	2524	qafszuti.exe	101

Launches sc.exe 3 IoCs

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

pid	Process
456	sc.exe
32	sc.exe
1180	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
3640	1940	WerFault.exe	82
4376	2524	WerFault.exe	94

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	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	qafszuti.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_7c2a38a540f8fc122b16114bf6d252fa.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

description	pid	Process	procid_target
PID 1940 wrote to memory of 4200	1940	JaffaCakes118_7c2a38a540f8fc122b16114bf6d252fa.exe	83
PID 1940 wrote to memory of 4200	1940	JaffaCakes118_7c2a38a540f8fc122b16114bf6d252fa.exe	83
PID 1940 wrote to memory of 4200	1940	JaffaCakes118_7c2a38a540f8fc122b16114bf6d252fa.exe	83
PID 1940 wrote to memory of 4164	1940	JaffaCakes118_7c2a38a540f8fc122b16114bf6d252fa.exe	85
PID 1940 wrote to memory of 4164	1940	JaffaCakes118_7c2a38a540f8fc122b16114bf6d252fa.exe	85
PID 1940 wrote to memory of 4164	1940	JaffaCakes118_7c2a38a540f8fc122b16114bf6d252fa.exe	85
PID 1940 wrote to memory of 456	1940	JaffaCakes118_7c2a38a540f8fc122b16114bf6d252fa.exe	88
PID 1940 wrote to memory of 456	1940	JaffaCakes118_7c2a38a540f8fc122b16114bf6d252fa.exe	88
PID 1940 wrote to memory of 456	1940	JaffaCakes118_7c2a38a540f8fc122b16114bf6d252fa.exe	88
PID 1940 wrote to memory of 32	1940	JaffaCakes118_7c2a38a540f8fc122b16114bf6d252fa.exe	90
PID 1940 wrote to memory of 32	1940	JaffaCakes118_7c2a38a540f8fc122b16114bf6d252fa.exe	90
PID 1940 wrote to memory of 32	1940	JaffaCakes118_7c2a38a540f8fc122b16114bf6d252fa.exe	90
PID 1940 wrote to memory of 1180	1940	JaffaCakes118_7c2a38a540f8fc122b16114bf6d252fa.exe	92
PID 1940 wrote to memory of 1180	1940	JaffaCakes118_7c2a38a540f8fc122b16114bf6d252fa.exe	92
PID 1940 wrote to memory of 1180	1940	JaffaCakes118_7c2a38a540f8fc122b16114bf6d252fa.exe	92
PID 1940 wrote to memory of 2376	1940	JaffaCakes118_7c2a38a540f8fc122b16114bf6d252fa.exe	95
PID 1940 wrote to memory of 2376	1940	JaffaCakes118_7c2a38a540f8fc122b16114bf6d252fa.exe	95
PID 1940 wrote to memory of 2376	1940	JaffaCakes118_7c2a38a540f8fc122b16114bf6d252fa.exe	95
PID 2524 wrote to memory of 400	2524	qafszuti.exe	101
PID 2524 wrote to memory of 400	2524	qafszuti.exe	101
PID 2524 wrote to memory of 400	2524	qafszuti.exe	101
PID 2524 wrote to memory of 400	2524	qafszuti.exe	101
PID 2524 wrote to memory of 400	2524	qafszuti.exe	101

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7c2a38a540f8fc122b16114bf6d252fa.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7c2a38a540f8fc122b16114bf6d252fa.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1940
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\zmchkhup\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4200
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\qafszuti.exe" C:\Windows\SysWOW64\zmchkhup\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4164
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create zmchkhup binPath= "C:\Windows\SysWOW64\zmchkhup\qafszuti.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7c2a38a540f8fc122b16114bf6d252fa.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:456
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description zmchkhup "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:32
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start zmchkhup
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1180
- 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:2376
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1940 -s 1152
  2⤵
  - Program crash
  PID:3640

C:\Windows\SysWOW64\zmchkhup\qafszuti.exe
C:\Windows\SysWOW64\zmchkhup\qafszuti.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7c2a38a540f8fc122b16114bf6d252fa.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2524
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:400
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2524 -s 520
  2⤵
  - Program crash
  PID:4376

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 1940 -ip 1940
1⤵
PID:3556

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 540 -p 2524 -ip 2524
1⤵
PID:4224

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\qafszuti.exe

Filesize
13.9MB

MD5
242f489f8078be392c382f17ca9a8919

SHA1
435d85090b02b798bcd51b0fecafd8b97311aa2d

SHA256
3239ac0c59a5cad0da883426d792609f3c897c2276632df60b80fae8954ab540

SHA512
41ea99758dda364b5477c6e6c35a81d63e8304898b116fa97737f5c3b785ed692d7d05e9c61eee29b395f31d245af18089f1306ef1f1bff58c7da2ac3dbebd3d

Download Submit
memory/400-11-0x00000000008B0000-0x00000000008C5000-memory.dmp

Filesize
84KB

Download
memory/400-14-0x00000000008B0000-0x00000000008C5000-memory.dmp

Filesize
84KB

Download
memory/400-15-0x00000000008B0000-0x00000000008C5000-memory.dmp

Filesize
84KB

Download
memory/1940-1-0x0000000001970000-0x0000000001A70000-memory.dmp

Filesize
1024KB

Download
memory/1940-2-0x0000000001810000-0x0000000001823000-memory.dmp

Filesize
76KB

Download
memory/1940-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1940-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1940-9-0x0000000001810000-0x0000000001823000-memory.dmp

Filesize
76KB

Download
memory/1940-8-0x0000000000400000-0x00000000016BC000-memory.dmp

Filesize
18.7MB

Download
memory/2524-12-0x0000000000400000-0x00000000016BC000-memory.dmp

Filesize
18.7MB

Download
memory/2524-17-0x0000000000400000-0x00000000016BC000-memory.dmp

Filesize
18.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads