tofsee | 6686cae9b3cdb8c87880aba95dd27f5b540ad54c0bdbd65b8b8b5f90cf38b644

General

Target

fc209b18b7ab86f3a8c755f3f3af34f1_JaffaCakes118.exe
Size

12.6MB
MD5

fc209b18b7ab86f3a8c755f3f3af34f1
SHA1

b9e857abc7c7748e8854fbd0a3b849bade3416a5
SHA256

6686cae9b3cdb8c87880aba95dd27f5b540ad54c0bdbd65b8b8b5f90cf38b644
SHA512

30ec26ceeedecf299a4d9f6fa2c61656396df4265c71b3e285d0d149d9fded2a88ee161da9e55200cd74f363c101bbd3ffe2b38e991c76fe6c00b20a33df0c9b
SSDEEP

3072:h5BNmJpGugiP5MRMF7xZk8w1Y5jQUSK5WwEm5FafNCbyyyxKH:h/xiP62F7M8w18NSK5WwB7byFx6

Score

10^/10

tofsee evasion persistence trojan

Malware Config

Extracted

Family

tofsee

C2

176.111.174.19

defeatwax.ru

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\cbsrjwhq = "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

2680 netsh.exe

pid	process
2680	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\cbsrjwhq\ImagePath = "C:\\Windows\\SysWOW64\\cbsrjwhq\\vbumnyyt.exe"	svchost.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

2408 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

vbumnyyt.exe

pid process

1760 vbumnyyt.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

vbumnyyt.exe

description pid process target process

PID 1760 set thread context of 2408 1760 vbumnyyt.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

2636 sc.exe
2676 sc.exe
2612 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2408	svchost.exe

pid	process
1760	vbumnyyt.exe

description	pid	process	target process
PID 1760 set thread context of 2408	1760	vbumnyyt.exe	svchost.exe

pid	process
2636	sc.exe
2676	sc.exe
2612	sc.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

fc209b18b7ab86f3a8c755f3f3af34f1_JaffaCakes118.exevbumnyyt.exe

description	pid	process	target process
PID 2292 wrote to memory of 1536	2292	fc209b18b7ab86f3a8c755f3f3af34f1_JaffaCakes118.exe	cmd.exe
PID 2292 wrote to memory of 1536	2292	fc209b18b7ab86f3a8c755f3f3af34f1_JaffaCakes118.exe	cmd.exe
PID 2292 wrote to memory of 1536	2292	fc209b18b7ab86f3a8c755f3f3af34f1_JaffaCakes118.exe	cmd.exe
PID 2292 wrote to memory of 1536	2292	fc209b18b7ab86f3a8c755f3f3af34f1_JaffaCakes118.exe	cmd.exe
PID 2292 wrote to memory of 2896	2292	fc209b18b7ab86f3a8c755f3f3af34f1_JaffaCakes118.exe	cmd.exe
PID 2292 wrote to memory of 2896	2292	fc209b18b7ab86f3a8c755f3f3af34f1_JaffaCakes118.exe	cmd.exe
PID 2292 wrote to memory of 2896	2292	fc209b18b7ab86f3a8c755f3f3af34f1_JaffaCakes118.exe	cmd.exe
PID 2292 wrote to memory of 2896	2292	fc209b18b7ab86f3a8c755f3f3af34f1_JaffaCakes118.exe	cmd.exe
PID 2292 wrote to memory of 2636	2292	fc209b18b7ab86f3a8c755f3f3af34f1_JaffaCakes118.exe	sc.exe
PID 2292 wrote to memory of 2636	2292	fc209b18b7ab86f3a8c755f3f3af34f1_JaffaCakes118.exe	sc.exe
PID 2292 wrote to memory of 2636	2292	fc209b18b7ab86f3a8c755f3f3af34f1_JaffaCakes118.exe	sc.exe
PID 2292 wrote to memory of 2636	2292	fc209b18b7ab86f3a8c755f3f3af34f1_JaffaCakes118.exe	sc.exe
PID 2292 wrote to memory of 2676	2292	fc209b18b7ab86f3a8c755f3f3af34f1_JaffaCakes118.exe	sc.exe
PID 2292 wrote to memory of 2676	2292	fc209b18b7ab86f3a8c755f3f3af34f1_JaffaCakes118.exe	sc.exe
PID 2292 wrote to memory of 2676	2292	fc209b18b7ab86f3a8c755f3f3af34f1_JaffaCakes118.exe	sc.exe
PID 2292 wrote to memory of 2676	2292	fc209b18b7ab86f3a8c755f3f3af34f1_JaffaCakes118.exe	sc.exe
PID 2292 wrote to memory of 2612	2292	fc209b18b7ab86f3a8c755f3f3af34f1_JaffaCakes118.exe	sc.exe
PID 2292 wrote to memory of 2612	2292	fc209b18b7ab86f3a8c755f3f3af34f1_JaffaCakes118.exe	sc.exe
PID 2292 wrote to memory of 2612	2292	fc209b18b7ab86f3a8c755f3f3af34f1_JaffaCakes118.exe	sc.exe
PID 2292 wrote to memory of 2612	2292	fc209b18b7ab86f3a8c755f3f3af34f1_JaffaCakes118.exe	sc.exe
PID 2292 wrote to memory of 2680	2292	fc209b18b7ab86f3a8c755f3f3af34f1_JaffaCakes118.exe	netsh.exe
PID 2292 wrote to memory of 2680	2292	fc209b18b7ab86f3a8c755f3f3af34f1_JaffaCakes118.exe	netsh.exe
PID 2292 wrote to memory of 2680	2292	fc209b18b7ab86f3a8c755f3f3af34f1_JaffaCakes118.exe	netsh.exe
PID 2292 wrote to memory of 2680	2292	fc209b18b7ab86f3a8c755f3f3af34f1_JaffaCakes118.exe	netsh.exe
PID 1760 wrote to memory of 2408	1760	vbumnyyt.exe	svchost.exe
PID 1760 wrote to memory of 2408	1760	vbumnyyt.exe	svchost.exe
PID 1760 wrote to memory of 2408	1760	vbumnyyt.exe	svchost.exe
PID 1760 wrote to memory of 2408	1760	vbumnyyt.exe	svchost.exe
PID 1760 wrote to memory of 2408	1760	vbumnyyt.exe	svchost.exe
PID 1760 wrote to memory of 2408	1760	vbumnyyt.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\fc209b18b7ab86f3a8c755f3f3af34f1_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\fc209b18b7ab86f3a8c755f3f3af34f1_JaffaCakes118.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2292

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\cbsrjwhq\
2⤵
PID:1536

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\vbumnyyt.exe" C:\Windows\SysWOW64\cbsrjwhq\
2⤵
PID:2896

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create cbsrjwhq binPath= "C:\Windows\SysWOW64\cbsrjwhq\vbumnyyt.exe /d\"C:\Users\Admin\AppData\Local\Temp\fc209b18b7ab86f3a8c755f3f3af34f1_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:2636

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description cbsrjwhq "wifi internet conection"
2⤵
- Launches sc.exe
PID:2676

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start cbsrjwhq
2⤵
- Launches sc.exe
PID:2612

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:2680

C:\Windows\SysWOW64\cbsrjwhq\vbumnyyt.exe
C:\Windows\SysWOW64\cbsrjwhq\vbumnyyt.exe /d"C:\Users\Admin\AppData\Local\Temp\fc209b18b7ab86f3a8c755f3f3af34f1_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1760

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Windows security bypass
- Sets service image path in registry
- Deletes itself
PID:2408

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\vbumnyyt.exe
Filesize
14.2MB

MD5
5d70ec609db3225db8283438b97cfb82

SHA1
88a91ee4f70843cc51696957f957f1d7b722068a

SHA256
6acd47253b24c6511501880f678c7bcab80bbf2c7a98d9032ac686e3562e29ed

SHA512
6d7aa6109960600324328cd2d41108caa098e858333cf4928722a55e158e25a9b298258fd32b6a95dafe59d901453c1651896065c64124faf3d65843bee7fad8

Download Submit
memory/1760-10-0x0000000000A90000-0x0000000000B90000-memory.dmp

Filesize
1024KB

Download
memory/1760-17-0x0000000000400000-0x000000000099E000-memory.dmp

Filesize
5.6MB

Download
memory/1760-12-0x0000000000400000-0x000000000099E000-memory.dmp

Filesize
5.6MB

Download
memory/2292-6-0x0000000000400000-0x000000000099E000-memory.dmp

Filesize
5.6MB

Download
memory/2292-8-0x00000000001B0000-0x00000000001C3000-memory.dmp

Filesize
76KB

Download
memory/2292-1-0x00000000002F0000-0x00000000003F0000-memory.dmp

Filesize
1024KB

Download
memory/2292-2-0x00000000001B0000-0x00000000001C3000-memory.dmp

Filesize
76KB

Download
memory/2292-4-0x0000000000400000-0x000000000099E000-memory.dmp

Filesize
5.6MB

Download
memory/2408-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2408-15-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2408-11-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2408-19-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2408-20-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2408-21-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads