tofsee | 62b95f3ef9cdf1e9c528d859c4d4116e114cf90b9711e1bc486ab4d034bd574e

General

Target

f570f71d8285dce6ba5ac8ead17b0435_JaffaCakes118.exe
Size

10.4MB
MD5

f570f71d8285dce6ba5ac8ead17b0435
SHA1

ab4efe5cba052b2ba724222540043c90d9d6980c
SHA256

62b95f3ef9cdf1e9c528d859c4d4116e114cf90b9711e1bc486ab4d034bd574e
SHA512

56034472678e5d6610f1cb9b59f4b3a60c96b281b3fceb529742cdf51ec213c08e16a6b8e1748a06d461ff3d69bf7defdcac8cad10968c64d3c10135093de62f
SSDEEP

6144:fpcqzKUTS5Yde/qyQK8ZtqTMIKC/eUPFwUnyaAjLo7pU6eD:PKUO54e/q60tmT7/xPFwVjs7G6

Score

10^/10

tofsee evasion persistence 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
Creates new service(s) 1 TTPs
persistence

Windows Service
T1543.003
Modifies Windows Firewall 2 TTPs 1 IoCs
evasion

Windows Service
T1543.003

Disable or Modify System Firewall
T1562.004

Processes:

netsh.exe

pid process

4940 netsh.exe

pid	process
4940	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\iwteelxh\ImagePath = "C:\\Windows\\SysWOW64\\iwteelxh\\fapzejbz.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:

f570f71d8285dce6ba5ac8ead17b0435_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2177723727-746291240-1644359950-1000\Control Panel\International\Geo\Nation	f570f71d8285dce6ba5ac8ead17b0435_JaffaCakes118.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

4212 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

fapzejbz.exe

pid process

1892 fapzejbz.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

fapzejbz.exe

description pid process target process

PID 1892 set thread context of 4212 1892 fapzejbz.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

4936 sc.exe
1972 sc.exe
4360 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Program crash 2 IoCs

Processes:

WerFault.exeWerFault.exe

pid pid_target process target process

4676 2184 WerFault.exe f570f71d8285dce6ba5ac8ead17b0435_JaffaCakes118.exe
4364 1892 WerFault.exe fapzejbz.exe

pid	process
4212	svchost.exe

pid	process
1892	fapzejbz.exe

description	pid	process	target process
PID 1892 set thread context of 4212	1892	fapzejbz.exe	svchost.exe

pid	process
4936	sc.exe
1972	sc.exe
4360	sc.exe

pid	pid_target	process	target process
4676	2184	WerFault.exe	f570f71d8285dce6ba5ac8ead17b0435_JaffaCakes118.exe
4364	1892	WerFault.exe	fapzejbz.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

f570f71d8285dce6ba5ac8ead17b0435_JaffaCakes118.exefapzejbz.exe

description	pid	process	target process
PID 2184 wrote to memory of 2260	2184	f570f71d8285dce6ba5ac8ead17b0435_JaffaCakes118.exe	cmd.exe
PID 2184 wrote to memory of 2260	2184	f570f71d8285dce6ba5ac8ead17b0435_JaffaCakes118.exe	cmd.exe
PID 2184 wrote to memory of 2260	2184	f570f71d8285dce6ba5ac8ead17b0435_JaffaCakes118.exe	cmd.exe
PID 2184 wrote to memory of 2672	2184	f570f71d8285dce6ba5ac8ead17b0435_JaffaCakes118.exe	cmd.exe
PID 2184 wrote to memory of 2672	2184	f570f71d8285dce6ba5ac8ead17b0435_JaffaCakes118.exe	cmd.exe
PID 2184 wrote to memory of 2672	2184	f570f71d8285dce6ba5ac8ead17b0435_JaffaCakes118.exe	cmd.exe
PID 2184 wrote to memory of 4936	2184	f570f71d8285dce6ba5ac8ead17b0435_JaffaCakes118.exe	sc.exe
PID 2184 wrote to memory of 4936	2184	f570f71d8285dce6ba5ac8ead17b0435_JaffaCakes118.exe	sc.exe
PID 2184 wrote to memory of 4936	2184	f570f71d8285dce6ba5ac8ead17b0435_JaffaCakes118.exe	sc.exe
PID 2184 wrote to memory of 1972	2184	f570f71d8285dce6ba5ac8ead17b0435_JaffaCakes118.exe	sc.exe
PID 2184 wrote to memory of 1972	2184	f570f71d8285dce6ba5ac8ead17b0435_JaffaCakes118.exe	sc.exe
PID 2184 wrote to memory of 1972	2184	f570f71d8285dce6ba5ac8ead17b0435_JaffaCakes118.exe	sc.exe
PID 2184 wrote to memory of 4360	2184	f570f71d8285dce6ba5ac8ead17b0435_JaffaCakes118.exe	sc.exe
PID 2184 wrote to memory of 4360	2184	f570f71d8285dce6ba5ac8ead17b0435_JaffaCakes118.exe	sc.exe
PID 2184 wrote to memory of 4360	2184	f570f71d8285dce6ba5ac8ead17b0435_JaffaCakes118.exe	sc.exe
PID 2184 wrote to memory of 4940	2184	f570f71d8285dce6ba5ac8ead17b0435_JaffaCakes118.exe	netsh.exe
PID 2184 wrote to memory of 4940	2184	f570f71d8285dce6ba5ac8ead17b0435_JaffaCakes118.exe	netsh.exe
PID 2184 wrote to memory of 4940	2184	f570f71d8285dce6ba5ac8ead17b0435_JaffaCakes118.exe	netsh.exe
PID 1892 wrote to memory of 4212	1892	fapzejbz.exe	svchost.exe
PID 1892 wrote to memory of 4212	1892	fapzejbz.exe	svchost.exe
PID 1892 wrote to memory of 4212	1892	fapzejbz.exe	svchost.exe
PID 1892 wrote to memory of 4212	1892	fapzejbz.exe	svchost.exe
PID 1892 wrote to memory of 4212	1892	fapzejbz.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\f570f71d8285dce6ba5ac8ead17b0435_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f570f71d8285dce6ba5ac8ead17b0435_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2184

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\iwteelxh\
2⤵
PID:2260

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\fapzejbz.exe" C:\Windows\SysWOW64\iwteelxh\
2⤵
PID:2672

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create iwteelxh binPath= "C:\Windows\SysWOW64\iwteelxh\fapzejbz.exe /d\"C:\Users\Admin\AppData\Local\Temp\f570f71d8285dce6ba5ac8ead17b0435_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:4936

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description iwteelxh "wifi internet conection"
2⤵
- Launches sc.exe
PID:1972

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start iwteelxh
2⤵
- Launches sc.exe
PID:4360

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
PID:4940

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2184 -s 1040
2⤵
- Program crash
PID:4676

C:\Windows\SysWOW64\iwteelxh\fapzejbz.exe
C:\Windows\SysWOW64\iwteelxh\fapzejbz.exe /d"C:\Users\Admin\AppData\Local\Temp\f570f71d8285dce6ba5ac8ead17b0435_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1892

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Sets service image path in registry
- Deletes itself
PID:4212

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1892 -s 208
2⤵
- Program crash
PID:4364

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 2184 -ip 2184
1⤵
PID:2664

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 1892 -ip 1892
1⤵
PID:2732

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

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

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

C:\Users\Admin\AppData\Local\Temp\fapzejbz.exe
Filesize
12.6MB

MD5
dd5747fe046ed5edd376285f9bba8f32

SHA1
24a532c22dd4be8aad32fbb841c75a307229154c

SHA256
34c5a53fd09cbe7df183f08c1337e40d3d5aecc9cc119f4835b807ef20a9a1d6

SHA512
00325748dced28bc0421eb49a881034ebd2c7e4409f3f8f1d4649ee4a097d805f36251b4eaf0f995462f7b149bb7f55fa39600de133d41896ddd201cf8645cf6

Download Submit
memory/1892-10-0x0000000000670000-0x0000000000770000-memory.dmp

Filesize
1024KB

Download
memory/1892-11-0x0000000000400000-0x00000000004BF000-memory.dmp

Filesize
764KB

Download
memory/1892-17-0x0000000000400000-0x00000000004BF000-memory.dmp

Filesize
764KB

Download
memory/2184-4-0x0000000000400000-0x00000000004BF000-memory.dmp

Filesize
764KB

Download
memory/2184-1-0x0000000000660000-0x0000000000760000-memory.dmp

Filesize
1024KB

Download
memory/2184-8-0x0000000000400000-0x00000000004BF000-memory.dmp

Filesize
764KB

Download
memory/2184-9-0x0000000000540000-0x0000000000553000-memory.dmp

Filesize
76KB

Download
memory/2184-2-0x0000000000540000-0x0000000000553000-memory.dmp

Filesize
76KB

Download
memory/4212-12-0x00000000001D0000-0x00000000001E5000-memory.dmp

Filesize
84KB

Download
memory/4212-15-0x00000000001D0000-0x00000000001E5000-memory.dmp

Filesize
84KB

Download
memory/4212-16-0x00000000001D0000-0x00000000001E5000-memory.dmp

Filesize
84KB

Download
memory/4212-18-0x00000000001D0000-0x00000000001E5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads