tofsee | bc51cad0a8ed5eb57551f034a5f693b4d1c135201a38ff4b3d7c1eb6151745c2

General

Target

f5a99263467440a04da884e37b581577_JaffaCakes118.exe
Size

14.2MB
MD5

f5a99263467440a04da884e37b581577
SHA1

58c016d9dae50898c03dc602997db96b14fbc2fe
SHA256

bc51cad0a8ed5eb57551f034a5f693b4d1c135201a38ff4b3d7c1eb6151745c2
SHA512

b5255af60ca12756011398e5907ef6587cd9ea77401b55b30c0812c2c616ab492eff9d2bba6c5a7ba7732e2f4f0eba80d702bb0d98e767499d182219e16f45af
SSDEEP

196608:H4TTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTH:H

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\nmrrgbpc = "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

2492 netsh.exe

pid	process
2492	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\nmrrgbpc\ImagePath = "C:\\Windows\\SysWOW64\\nmrrgbpc\\ayiggwfv.exe"	svchost.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

2436 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

ayiggwfv.exe

pid process

2072 ayiggwfv.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

ayiggwfv.exe

description pid process target process

PID 2072 set thread context of 2436 2072 ayiggwfv.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

864 sc.exe
2536 sc.exe
2692 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2436	svchost.exe

pid	process
2072	ayiggwfv.exe

description	pid	process	target process
PID 2072 set thread context of 2436	2072	ayiggwfv.exe	svchost.exe

pid	process
864	sc.exe
2536	sc.exe
2692	sc.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

f5a99263467440a04da884e37b581577_JaffaCakes118.exeayiggwfv.exe

description	pid	process	target process
PID 1716 wrote to memory of 1156	1716	f5a99263467440a04da884e37b581577_JaffaCakes118.exe	cmd.exe
PID 1716 wrote to memory of 1156	1716	f5a99263467440a04da884e37b581577_JaffaCakes118.exe	cmd.exe
PID 1716 wrote to memory of 1156	1716	f5a99263467440a04da884e37b581577_JaffaCakes118.exe	cmd.exe
PID 1716 wrote to memory of 1156	1716	f5a99263467440a04da884e37b581577_JaffaCakes118.exe	cmd.exe
PID 1716 wrote to memory of 2684	1716	f5a99263467440a04da884e37b581577_JaffaCakes118.exe	cmd.exe
PID 1716 wrote to memory of 2684	1716	f5a99263467440a04da884e37b581577_JaffaCakes118.exe	cmd.exe
PID 1716 wrote to memory of 2684	1716	f5a99263467440a04da884e37b581577_JaffaCakes118.exe	cmd.exe
PID 1716 wrote to memory of 2684	1716	f5a99263467440a04da884e37b581577_JaffaCakes118.exe	cmd.exe
PID 1716 wrote to memory of 864	1716	f5a99263467440a04da884e37b581577_JaffaCakes118.exe	sc.exe
PID 1716 wrote to memory of 864	1716	f5a99263467440a04da884e37b581577_JaffaCakes118.exe	sc.exe
PID 1716 wrote to memory of 864	1716	f5a99263467440a04da884e37b581577_JaffaCakes118.exe	sc.exe
PID 1716 wrote to memory of 864	1716	f5a99263467440a04da884e37b581577_JaffaCakes118.exe	sc.exe
PID 1716 wrote to memory of 2536	1716	f5a99263467440a04da884e37b581577_JaffaCakes118.exe	sc.exe
PID 1716 wrote to memory of 2536	1716	f5a99263467440a04da884e37b581577_JaffaCakes118.exe	sc.exe
PID 1716 wrote to memory of 2536	1716	f5a99263467440a04da884e37b581577_JaffaCakes118.exe	sc.exe
PID 1716 wrote to memory of 2536	1716	f5a99263467440a04da884e37b581577_JaffaCakes118.exe	sc.exe
PID 1716 wrote to memory of 2692	1716	f5a99263467440a04da884e37b581577_JaffaCakes118.exe	sc.exe
PID 1716 wrote to memory of 2692	1716	f5a99263467440a04da884e37b581577_JaffaCakes118.exe	sc.exe
PID 1716 wrote to memory of 2692	1716	f5a99263467440a04da884e37b581577_JaffaCakes118.exe	sc.exe
PID 1716 wrote to memory of 2692	1716	f5a99263467440a04da884e37b581577_JaffaCakes118.exe	sc.exe
PID 1716 wrote to memory of 2492	1716	f5a99263467440a04da884e37b581577_JaffaCakes118.exe	netsh.exe
PID 1716 wrote to memory of 2492	1716	f5a99263467440a04da884e37b581577_JaffaCakes118.exe	netsh.exe
PID 1716 wrote to memory of 2492	1716	f5a99263467440a04da884e37b581577_JaffaCakes118.exe	netsh.exe
PID 1716 wrote to memory of 2492	1716	f5a99263467440a04da884e37b581577_JaffaCakes118.exe	netsh.exe
PID 2072 wrote to memory of 2436	2072	ayiggwfv.exe	svchost.exe
PID 2072 wrote to memory of 2436	2072	ayiggwfv.exe	svchost.exe
PID 2072 wrote to memory of 2436	2072	ayiggwfv.exe	svchost.exe
PID 2072 wrote to memory of 2436	2072	ayiggwfv.exe	svchost.exe
PID 2072 wrote to memory of 2436	2072	ayiggwfv.exe	svchost.exe
PID 2072 wrote to memory of 2436	2072	ayiggwfv.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\f5a99263467440a04da884e37b581577_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f5a99263467440a04da884e37b581577_JaffaCakes118.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1716

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\nmrrgbpc\
2⤵
PID:1156

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ayiggwfv.exe" C:\Windows\SysWOW64\nmrrgbpc\
2⤵
PID:2684

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create nmrrgbpc binPath= "C:\Windows\SysWOW64\nmrrgbpc\ayiggwfv.exe /d\"C:\Users\Admin\AppData\Local\Temp\f5a99263467440a04da884e37b581577_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:864

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description nmrrgbpc "wifi internet conection"
2⤵
- Launches sc.exe
PID:2536

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start nmrrgbpc
2⤵
- Launches sc.exe
PID:2692

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:2492

C:\Windows\SysWOW64\nmrrgbpc\ayiggwfv.exe
C:\Windows\SysWOW64\nmrrgbpc\ayiggwfv.exe /d"C:\Users\Admin\AppData\Local\Temp\f5a99263467440a04da884e37b581577_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2072

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Windows security bypass
- Sets service image path in registry
- Deletes itself
PID:2436

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

Replay Monitor

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Downloads

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

Filesize
10.6MB

MD5
ab109c913445e8a0251de173a629b44d

SHA1
79f7aa660bb6d35ba15d507eca8f9b84bc67a910

SHA256
2f82a0c6e14edc35e09a3a1cac9ad392baa94447467e7ef69e00c7540a801150

SHA512
51521f2442de9ba6d0f8be85d886bb83132eb3d73c1fbeedfaa2977bb38d628a8e8ada0b91f7d3b0eaaade13781d50e5bb8e991dbbbebe7775937d96e654b652

Download Submit
memory/1716-1-0x0000000000270000-0x0000000000370000-memory.dmp

Filesize
1024KB

Download
memory/1716-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/1716-4-0x0000000000400000-0x0000000000870000-memory.dmp

Filesize
4.4MB

Download
memory/1716-6-0x0000000000400000-0x0000000000870000-memory.dmp

Filesize
4.4MB

Download
memory/2072-10-0x0000000000400000-0x0000000000870000-memory.dmp

Filesize
4.4MB

Download
memory/2072-9-0x00000000002B0000-0x00000000003B0000-memory.dmp

Filesize
1024KB

Download
memory/2072-15-0x0000000000400000-0x0000000000870000-memory.dmp

Filesize
4.4MB

Download
memory/2436-11-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2436-12-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2436-14-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2436-19-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2436-20-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2436-21-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads