tofsee | f24d1e07c7931d2e1ccf446f136c580960012a5ac3de1aba2d4032ddcd46a0fb

General

Target

JaffaCakes118_f24d1e07c7931d2e1ccf446f136c580960012a5ac3de1aba2d4032ddcd46a0fb.exe
Size

237KB
MD5

0cbf3ef7e6557d32b82e1c115d47ac0a
SHA1

7ee44a699bf8b5413e0df423fa488946daccae0a
SHA256

f24d1e07c7931d2e1ccf446f136c580960012a5ac3de1aba2d4032ddcd46a0fb
SHA512

bec960ad7604a51a6c1b41c3cd7bebdd96f4cb5e1aaf60494e5099fe9c05e5d96b3c456b992c46be93c12194b81c638eef29cb483d92b719a832c2221b6f541c
SSDEEP

6144:r4hC1W6n2IzYX7OsWf+I3UbJ+9ItiRatcQ9I:rYVY2IzYHWf+IKJ+CtiYW

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
208	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\pnjycwvm\ImagePath = "C:\\Windows\\SysWOW64\\pnjycwvm\\widahggu.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-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	JaffaCakes118_f24d1e07c7931d2e1ccf446f136c580960012a5ac3de1aba2d4032ddcd46a0fb.exe

Deletes itself 1 IoCs

pid	Process
4692	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1268	widahggu.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1268 set thread context of 4692	1268	widahggu.exe	100

Launches sc.exe 3 IoCs

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

pid	Process
456	sc.exe
4932	sc.exe
3628	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 6 IoCs

pid	pid_target	Process	procid_target
4752	3940	WerFault.exe	82
3596	1268	WerFault.exe	93
64	3940	WerFault.exe	82
1004	1268	WerFault.exe	93
4392	3940	WerFault.exe	82
2864	1268	WerFault.exe	93

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	widahggu.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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_f24d1e07c7931d2e1ccf446f136c580960012a5ac3de1aba2d4032ddcd46a0fb.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3940 wrote to memory of 5036	3940	JaffaCakes118_f24d1e07c7931d2e1ccf446f136c580960012a5ac3de1aba2d4032ddcd46a0fb.exe	83
PID 3940 wrote to memory of 5036	3940	JaffaCakes118_f24d1e07c7931d2e1ccf446f136c580960012a5ac3de1aba2d4032ddcd46a0fb.exe	83
PID 3940 wrote to memory of 5036	3940	JaffaCakes118_f24d1e07c7931d2e1ccf446f136c580960012a5ac3de1aba2d4032ddcd46a0fb.exe	83
PID 3940 wrote to memory of 4016	3940	JaffaCakes118_f24d1e07c7931d2e1ccf446f136c580960012a5ac3de1aba2d4032ddcd46a0fb.exe	85
PID 3940 wrote to memory of 4016	3940	JaffaCakes118_f24d1e07c7931d2e1ccf446f136c580960012a5ac3de1aba2d4032ddcd46a0fb.exe	85
PID 3940 wrote to memory of 4016	3940	JaffaCakes118_f24d1e07c7931d2e1ccf446f136c580960012a5ac3de1aba2d4032ddcd46a0fb.exe	85
PID 3940 wrote to memory of 456	3940	JaffaCakes118_f24d1e07c7931d2e1ccf446f136c580960012a5ac3de1aba2d4032ddcd46a0fb.exe	87
PID 3940 wrote to memory of 456	3940	JaffaCakes118_f24d1e07c7931d2e1ccf446f136c580960012a5ac3de1aba2d4032ddcd46a0fb.exe	87
PID 3940 wrote to memory of 456	3940	JaffaCakes118_f24d1e07c7931d2e1ccf446f136c580960012a5ac3de1aba2d4032ddcd46a0fb.exe	87
PID 3940 wrote to memory of 4932	3940	JaffaCakes118_f24d1e07c7931d2e1ccf446f136c580960012a5ac3de1aba2d4032ddcd46a0fb.exe	89
PID 3940 wrote to memory of 4932	3940	JaffaCakes118_f24d1e07c7931d2e1ccf446f136c580960012a5ac3de1aba2d4032ddcd46a0fb.exe	89
PID 3940 wrote to memory of 4932	3940	JaffaCakes118_f24d1e07c7931d2e1ccf446f136c580960012a5ac3de1aba2d4032ddcd46a0fb.exe	89
PID 3940 wrote to memory of 3628	3940	JaffaCakes118_f24d1e07c7931d2e1ccf446f136c580960012a5ac3de1aba2d4032ddcd46a0fb.exe	91
PID 3940 wrote to memory of 3628	3940	JaffaCakes118_f24d1e07c7931d2e1ccf446f136c580960012a5ac3de1aba2d4032ddcd46a0fb.exe	91
PID 3940 wrote to memory of 3628	3940	JaffaCakes118_f24d1e07c7931d2e1ccf446f136c580960012a5ac3de1aba2d4032ddcd46a0fb.exe	91
PID 3940 wrote to memory of 208	3940	JaffaCakes118_f24d1e07c7931d2e1ccf446f136c580960012a5ac3de1aba2d4032ddcd46a0fb.exe	94
PID 3940 wrote to memory of 208	3940	JaffaCakes118_f24d1e07c7931d2e1ccf446f136c580960012a5ac3de1aba2d4032ddcd46a0fb.exe	94
PID 3940 wrote to memory of 208	3940	JaffaCakes118_f24d1e07c7931d2e1ccf446f136c580960012a5ac3de1aba2d4032ddcd46a0fb.exe	94
PID 1268 wrote to memory of 4692	1268	widahggu.exe	100
PID 1268 wrote to memory of 4692	1268	widahggu.exe	100
PID 1268 wrote to memory of 4692	1268	widahggu.exe	100
PID 1268 wrote to memory of 4692	1268	widahggu.exe	100
PID 1268 wrote to memory of 4692	1268	widahggu.exe	100

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_f24d1e07c7931d2e1ccf446f136c580960012a5ac3de1aba2d4032ddcd46a0fb.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_f24d1e07c7931d2e1ccf446f136c580960012a5ac3de1aba2d4032ddcd46a0fb.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3940
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\pnjycwvm\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:5036
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\widahggu.exe" C:\Windows\SysWOW64\pnjycwvm\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4016
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create pnjycwvm binPath= "C:\Windows\SysWOW64\pnjycwvm\widahggu.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_f24d1e07c7931d2e1ccf446f136c580960012a5ac3de1aba2d4032ddcd46a0fb.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 pnjycwvm "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4932
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start pnjycwvm
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3628
- 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:208
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3940 -s 1292
  2⤵
  - Program crash
  PID:4752
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3940 -s 1384
  2⤵
  - Program crash
  PID:64
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3940 -s 1332
  2⤵
  - Program crash
  PID:4392

C:\Windows\SysWOW64\pnjycwvm\widahggu.exe
C:\Windows\SysWOW64\pnjycwvm\widahggu.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_f24d1e07c7931d2e1ccf446f136c580960012a5ac3de1aba2d4032ddcd46a0fb.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1268
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4692
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1268 -s 512
  2⤵
  - Program crash
  PID:3596
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1268 -s 560
  2⤵
  - Program crash
  PID:1004
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1268 -s 568
  2⤵
  - Program crash
  PID:2864

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3940 -ip 3940
1⤵
PID:4400

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 504 -p 3940 -ip 3940
1⤵
PID:2332

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 468 -p 1268 -ip 1268
1⤵
PID:1436

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 472 -p 1268 -ip 1268
1⤵
PID:2772

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 3940 -ip 3940
1⤵
PID:764

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 568 -p 1268 -ip 1268
1⤵
PID:1336

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\widahggu.exe

Filesize
12.5MB

MD5
2b4d6175479b97e1109cab34ed7157e0

SHA1
046d058ae540032c5fd7cd6047afda919ff34aa0

SHA256
f37cedf9c40e49d330b3b13c23fea6bb849b02736ffc86a9ad3d40c29411aa07

SHA512
ae6630f3a367d9995e7bf2a27b9fcab412e9a822cd672b71ae9adf07ed8073a8f1a9a9544208d98bf174f3d1e3da5a0ac44c7913c777f99e66041c88564e747b

Download Submit
memory/1268-10-0x0000000000400000-0x000000000086B000-memory.dmp

Filesize
4.4MB

Download
memory/1268-11-0x0000000000400000-0x000000000086B000-memory.dmp

Filesize
4.4MB

Download
memory/3940-1-0x0000000000A00000-0x0000000000B00000-memory.dmp

Filesize
1024KB

Download
memory/3940-2-0x00000000008E0000-0x00000000008F3000-memory.dmp

Filesize
76KB

Download
memory/3940-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3940-14-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3940-13-0x00000000008E0000-0x00000000008F3000-memory.dmp

Filesize
76KB

Download
memory/3940-12-0x0000000000400000-0x000000000086B000-memory.dmp

Filesize
4.4MB

Download
memory/4692-8-0x0000000000F10000-0x0000000000F25000-memory.dmp

Filesize
84KB

Download
memory/4692-16-0x0000000000F10000-0x0000000000F25000-memory.dmp

Filesize
84KB

Download
memory/4692-17-0x0000000000F10000-0x0000000000F25000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads