tofsee | 084d26ac03fadeb25260cb626efda571fc92bca3528d8dae61e30be71d126fae

General

Target

f3147553bec69b2a2b4001b906c9c8c5_JaffaCakes118.exe
Size

13.8MB
MD5

f3147553bec69b2a2b4001b906c9c8c5
SHA1

06c668815a1c3134336042e822c8c8a65f3f3434
SHA256

084d26ac03fadeb25260cb626efda571fc92bca3528d8dae61e30be71d126fae
SHA512

6e2d33055bb88f1ee81ba1c9d3f567c2ee521562997f4ba291a626a9a13a587de3c746161e4a138f5e63f0f066454685066de465e6da53c1d1322566aed7023f
SSDEEP

49152:ARBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB/:

Score

10^/10

tofsee evasion persistence trojan

Malware Config

Extracted

Family

tofsee

C2

43.231.4.6

lazystax.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\koringe = "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

2228 netsh.exe

pid	process
2228	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\koringe\ImagePath = "C:\\Windows\\SysWOW64\\koringe\\crvzpctt.exe"	svchost.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

2780 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

crvzpctt.exe

pid process

2520 crvzpctt.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

crvzpctt.exe

description pid process target process

PID 2520 set thread context of 2780 2520 crvzpctt.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

2492 sc.exe
2524 sc.exe
2696 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2780	svchost.exe

pid	process
2520	crvzpctt.exe

description	pid	process	target process
PID 2520 set thread context of 2780	2520	crvzpctt.exe	svchost.exe

pid	process
2492	sc.exe
2524	sc.exe
2696	sc.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

f3147553bec69b2a2b4001b906c9c8c5_JaffaCakes118.execrvzpctt.exe

description	pid	process	target process
PID 1192 wrote to memory of 1996	1192	f3147553bec69b2a2b4001b906c9c8c5_JaffaCakes118.exe	cmd.exe
PID 1192 wrote to memory of 1996	1192	f3147553bec69b2a2b4001b906c9c8c5_JaffaCakes118.exe	cmd.exe
PID 1192 wrote to memory of 1996	1192	f3147553bec69b2a2b4001b906c9c8c5_JaffaCakes118.exe	cmd.exe
PID 1192 wrote to memory of 1996	1192	f3147553bec69b2a2b4001b906c9c8c5_JaffaCakes118.exe	cmd.exe
PID 1192 wrote to memory of 3060	1192	f3147553bec69b2a2b4001b906c9c8c5_JaffaCakes118.exe	cmd.exe
PID 1192 wrote to memory of 3060	1192	f3147553bec69b2a2b4001b906c9c8c5_JaffaCakes118.exe	cmd.exe
PID 1192 wrote to memory of 3060	1192	f3147553bec69b2a2b4001b906c9c8c5_JaffaCakes118.exe	cmd.exe
PID 1192 wrote to memory of 3060	1192	f3147553bec69b2a2b4001b906c9c8c5_JaffaCakes118.exe	cmd.exe
PID 1192 wrote to memory of 2492	1192	f3147553bec69b2a2b4001b906c9c8c5_JaffaCakes118.exe	sc.exe
PID 1192 wrote to memory of 2492	1192	f3147553bec69b2a2b4001b906c9c8c5_JaffaCakes118.exe	sc.exe
PID 1192 wrote to memory of 2492	1192	f3147553bec69b2a2b4001b906c9c8c5_JaffaCakes118.exe	sc.exe
PID 1192 wrote to memory of 2492	1192	f3147553bec69b2a2b4001b906c9c8c5_JaffaCakes118.exe	sc.exe
PID 1192 wrote to memory of 2524	1192	f3147553bec69b2a2b4001b906c9c8c5_JaffaCakes118.exe	sc.exe
PID 1192 wrote to memory of 2524	1192	f3147553bec69b2a2b4001b906c9c8c5_JaffaCakes118.exe	sc.exe
PID 1192 wrote to memory of 2524	1192	f3147553bec69b2a2b4001b906c9c8c5_JaffaCakes118.exe	sc.exe
PID 1192 wrote to memory of 2524	1192	f3147553bec69b2a2b4001b906c9c8c5_JaffaCakes118.exe	sc.exe
PID 1192 wrote to memory of 2696	1192	f3147553bec69b2a2b4001b906c9c8c5_JaffaCakes118.exe	sc.exe
PID 1192 wrote to memory of 2696	1192	f3147553bec69b2a2b4001b906c9c8c5_JaffaCakes118.exe	sc.exe
PID 1192 wrote to memory of 2696	1192	f3147553bec69b2a2b4001b906c9c8c5_JaffaCakes118.exe	sc.exe
PID 1192 wrote to memory of 2696	1192	f3147553bec69b2a2b4001b906c9c8c5_JaffaCakes118.exe	sc.exe
PID 1192 wrote to memory of 2228	1192	f3147553bec69b2a2b4001b906c9c8c5_JaffaCakes118.exe	netsh.exe
PID 1192 wrote to memory of 2228	1192	f3147553bec69b2a2b4001b906c9c8c5_JaffaCakes118.exe	netsh.exe
PID 1192 wrote to memory of 2228	1192	f3147553bec69b2a2b4001b906c9c8c5_JaffaCakes118.exe	netsh.exe
PID 1192 wrote to memory of 2228	1192	f3147553bec69b2a2b4001b906c9c8c5_JaffaCakes118.exe	netsh.exe
PID 2520 wrote to memory of 2780	2520	crvzpctt.exe	svchost.exe
PID 2520 wrote to memory of 2780	2520	crvzpctt.exe	svchost.exe
PID 2520 wrote to memory of 2780	2520	crvzpctt.exe	svchost.exe
PID 2520 wrote to memory of 2780	2520	crvzpctt.exe	svchost.exe
PID 2520 wrote to memory of 2780	2520	crvzpctt.exe	svchost.exe
PID 2520 wrote to memory of 2780	2520	crvzpctt.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\f3147553bec69b2a2b4001b906c9c8c5_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f3147553bec69b2a2b4001b906c9c8c5_JaffaCakes118.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1192

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\koringe\
2⤵
PID:1996

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\crvzpctt.exe" C:\Windows\SysWOW64\koringe\
2⤵
PID:3060

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create koringe binPath= "C:\Windows\SysWOW64\koringe\crvzpctt.exe /d\"C:\Users\Admin\AppData\Local\Temp\f3147553bec69b2a2b4001b906c9c8c5_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:2492

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description koringe "wifi internet conection"
2⤵
- Launches sc.exe
PID:2524

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start koringe
2⤵
- Launches sc.exe
PID:2696

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:2228

C:\Windows\SysWOW64\koringe\crvzpctt.exe
C:\Windows\SysWOW64\koringe\crvzpctt.exe /d"C:\Users\Admin\AppData\Local\Temp\f3147553bec69b2a2b4001b906c9c8c5_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2520

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Windows security bypass
- Sets service image path in registry
- Deletes itself
PID:2780

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

2

T1562

Disable or Modify Tools

1

T1562.001

Disable or Modify System Firewall

Modify Registry

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

C:\Users\Admin\AppData\Local\Temp\crvzpctt.exe
Filesize
13.4MB

MD5
691d73273b0a9856bee0a9201f90c855

SHA1
0fd105c634f082bf6e5446da75c931b3b94a6872

SHA256
0e7b50ce2e93dbe54345c2324dc6137b6872cec8c1d8dd782c2ad9e13d1673bc

SHA512
7f105e1326877d884a6b1832e3169293cfd39c0ebfdced2b90f5e03f4efee6560cf8e4ecc28d4b5c903997c3112bd541ba87ca549e2acbeefbb4021834aa6bea

Download Submit
memory/1192-1-0x0000000000DC0000-0x0000000000EC0000-memory.dmp

Filesize
1024KB

Download
memory/1192-2-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/1192-4-0x0000000000400000-0x0000000000C0A000-memory.dmp

Filesize
8.0MB

Download
memory/1192-7-0x0000000000400000-0x0000000000C0A000-memory.dmp

Filesize
8.0MB

Download
memory/1192-8-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/2520-11-0x0000000000DC0000-0x0000000000EC0000-memory.dmp

Filesize
1024KB

Download
memory/2520-14-0x0000000000400000-0x0000000000C0A000-memory.dmp

Filesize
8.0MB

Download
memory/2520-16-0x0000000000400000-0x0000000000C0A000-memory.dmp

Filesize
8.0MB

Download
memory/2780-10-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2780-12-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2780-15-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2780-20-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2780-21-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2780-22-0x0000000000080000-0x0000000000095000-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