tofsee | de8a8858b5540698142f413e8990070ce478c2d314f4e61c32496e9eff9a31bf

General

Target

f9e4d29cbf1383086b1eeac1cee11bcc_JaffaCakes118.exe
Size

10.8MB
MD5

f9e4d29cbf1383086b1eeac1cee11bcc
SHA1

76011bf992a5c81d5b24842358f72144b2d221c4
SHA256

de8a8858b5540698142f413e8990070ce478c2d314f4e61c32496e9eff9a31bf
SHA512

30b3ecbfa24d685f6e99babc58f4af7ed3b966c3e5659843a5fc52a1c60a46645247c38a67674ad5bac2c37797f5de2f5aacb20d75c9726cdf1d3b57b5865348
SSDEEP

12288:BVkuScTcTcTcTcTcTcTcTcTcTcTcTcTcTcTcTcTcTcTcTcTcTcTcTcTcTcTcTcTE:BVX

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

Windows security bypass 2 TTPs 1 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\SysWOW64\tjfsfkfm = "0"	svchost.exe

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

2720 netsh.exe

pid	process
2720	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\tjfsfkfm\ImagePath = "C:\\Windows\\SysWOW64\\tjfsfkfm\\mtwuvvlz.exe"	svchost.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

2752 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

mtwuvvlz.exe

pid process

2588 mtwuvvlz.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

mtwuvvlz.exe

description pid process target process

PID 2588 set thread context of 2752 2588 mtwuvvlz.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

2432 sc.exe
2624 sc.exe
2856 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2752	svchost.exe

pid	process
2588	mtwuvvlz.exe

description	pid	process	target process
PID 2588 set thread context of 2752	2588	mtwuvvlz.exe	svchost.exe

pid	process
2432	sc.exe
2624	sc.exe
2856	sc.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

f9e4d29cbf1383086b1eeac1cee11bcc_JaffaCakes118.exemtwuvvlz.exe

description	pid	process	target process
PID 2012 wrote to memory of 1704	2012	f9e4d29cbf1383086b1eeac1cee11bcc_JaffaCakes118.exe	cmd.exe
PID 2012 wrote to memory of 1704	2012	f9e4d29cbf1383086b1eeac1cee11bcc_JaffaCakes118.exe	cmd.exe
PID 2012 wrote to memory of 1704	2012	f9e4d29cbf1383086b1eeac1cee11bcc_JaffaCakes118.exe	cmd.exe
PID 2012 wrote to memory of 1704	2012	f9e4d29cbf1383086b1eeac1cee11bcc_JaffaCakes118.exe	cmd.exe
PID 2012 wrote to memory of 3044	2012	f9e4d29cbf1383086b1eeac1cee11bcc_JaffaCakes118.exe	cmd.exe
PID 2012 wrote to memory of 3044	2012	f9e4d29cbf1383086b1eeac1cee11bcc_JaffaCakes118.exe	cmd.exe
PID 2012 wrote to memory of 3044	2012	f9e4d29cbf1383086b1eeac1cee11bcc_JaffaCakes118.exe	cmd.exe
PID 2012 wrote to memory of 3044	2012	f9e4d29cbf1383086b1eeac1cee11bcc_JaffaCakes118.exe	cmd.exe
PID 2012 wrote to memory of 2624	2012	f9e4d29cbf1383086b1eeac1cee11bcc_JaffaCakes118.exe	sc.exe
PID 2012 wrote to memory of 2624	2012	f9e4d29cbf1383086b1eeac1cee11bcc_JaffaCakes118.exe	sc.exe
PID 2012 wrote to memory of 2624	2012	f9e4d29cbf1383086b1eeac1cee11bcc_JaffaCakes118.exe	sc.exe
PID 2012 wrote to memory of 2624	2012	f9e4d29cbf1383086b1eeac1cee11bcc_JaffaCakes118.exe	sc.exe
PID 2012 wrote to memory of 2856	2012	f9e4d29cbf1383086b1eeac1cee11bcc_JaffaCakes118.exe	sc.exe
PID 2012 wrote to memory of 2856	2012	f9e4d29cbf1383086b1eeac1cee11bcc_JaffaCakes118.exe	sc.exe
PID 2012 wrote to memory of 2856	2012	f9e4d29cbf1383086b1eeac1cee11bcc_JaffaCakes118.exe	sc.exe
PID 2012 wrote to memory of 2856	2012	f9e4d29cbf1383086b1eeac1cee11bcc_JaffaCakes118.exe	sc.exe
PID 2012 wrote to memory of 2432	2012	f9e4d29cbf1383086b1eeac1cee11bcc_JaffaCakes118.exe	sc.exe
PID 2012 wrote to memory of 2432	2012	f9e4d29cbf1383086b1eeac1cee11bcc_JaffaCakes118.exe	sc.exe
PID 2012 wrote to memory of 2432	2012	f9e4d29cbf1383086b1eeac1cee11bcc_JaffaCakes118.exe	sc.exe
PID 2012 wrote to memory of 2432	2012	f9e4d29cbf1383086b1eeac1cee11bcc_JaffaCakes118.exe	sc.exe
PID 2588 wrote to memory of 2752	2588	mtwuvvlz.exe	svchost.exe
PID 2588 wrote to memory of 2752	2588	mtwuvvlz.exe	svchost.exe
PID 2588 wrote to memory of 2752	2588	mtwuvvlz.exe	svchost.exe
PID 2588 wrote to memory of 2752	2588	mtwuvvlz.exe	svchost.exe
PID 2588 wrote to memory of 2752	2588	mtwuvvlz.exe	svchost.exe
PID 2012 wrote to memory of 2720	2012	f9e4d29cbf1383086b1eeac1cee11bcc_JaffaCakes118.exe	netsh.exe
PID 2012 wrote to memory of 2720	2012	f9e4d29cbf1383086b1eeac1cee11bcc_JaffaCakes118.exe	netsh.exe
PID 2012 wrote to memory of 2720	2012	f9e4d29cbf1383086b1eeac1cee11bcc_JaffaCakes118.exe	netsh.exe
PID 2012 wrote to memory of 2720	2012	f9e4d29cbf1383086b1eeac1cee11bcc_JaffaCakes118.exe	netsh.exe
PID 2588 wrote to memory of 2752	2588	mtwuvvlz.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\f9e4d29cbf1383086b1eeac1cee11bcc_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f9e4d29cbf1383086b1eeac1cee11bcc_JaffaCakes118.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2012

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\tjfsfkfm\
2⤵
PID:1704

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\mtwuvvlz.exe" C:\Windows\SysWOW64\tjfsfkfm\
2⤵
PID:3044

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create tjfsfkfm binPath= "C:\Windows\SysWOW64\tjfsfkfm\mtwuvvlz.exe /d\"C:\Users\Admin\AppData\Local\Temp\f9e4d29cbf1383086b1eeac1cee11bcc_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:2624

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description tjfsfkfm "wifi internet conection"
2⤵
- Launches sc.exe
PID:2856

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start tjfsfkfm
2⤵
- Launches sc.exe
PID:2432

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:2720

C:\Windows\SysWOW64\tjfsfkfm\mtwuvvlz.exe
C:\Windows\SysWOW64\tjfsfkfm\mtwuvvlz.exe /d"C:\Users\Admin\AppData\Local\Temp\f9e4d29cbf1383086b1eeac1cee11bcc_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2588

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Windows security bypass
- Sets service image path in registry
- Deletes itself
PID:2752

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

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

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

Defense Evasion

Impair Defenses

2

T1562

Disable or Modify System Firewall

1

T1562.004

Disable or Modify Tools

Modify Registry

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\mtwuvvlz.exe

Filesize
13.1MB

MD5
b7d07eeaa7a0fe53ad1482f7b37f0fea

SHA1
d717a2f811caac69a944cabdddefaa4594d0adac

SHA256
2a5930f6279ee0e4f4bd94ff85eac9f7aa27b8b18dbf2a19d2fcc10d1297daf0

SHA512
81e13247329baf0a29d66cee648ed82bcf963d5dac6a25a4c4ccf8584cfc700d2f8f934bc5b5598d61e4761cc1ef67f30d4fbabeee6d5ae9375cf5960d4e713b

Download Submit
memory/2012-14-0x0000000002D90000-0x0000000002E90000-memory.dmp

Filesize
1024KB

Download
memory/2012-1-0x0000000002D90000-0x0000000002E90000-memory.dmp

Filesize
1024KB

Download
memory/2012-4-0x0000000000400000-0x0000000002CB9000-memory.dmp

Filesize
40.7MB

Download
memory/2012-2-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/2012-13-0x0000000000400000-0x0000000002CB9000-memory.dmp

Filesize
40.7MB

Download
memory/2588-11-0x00000000002F0000-0x0000000000303000-memory.dmp

Filesize
76KB

Download
memory/2588-15-0x0000000000400000-0x0000000002CB9000-memory.dmp

Filesize
40.7MB

Download
memory/2588-9-0x0000000002E90000-0x0000000002F90000-memory.dmp

Filesize
1024KB

Download
memory/2588-19-0x0000000000400000-0x0000000002CB9000-memory.dmp

Filesize
40.7MB

Download
memory/2752-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2752-8-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2752-16-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2752-21-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2752-22-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2752-23-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads