tofsee | 4dd4112152b70bd0e62e3f63b59634a9ccc4c0ed3b5fe90a1067526abac58856

General

Target

6fb0201dac82a2b6f3c409d74005eb50aab93abd7508f513636be051db86eefd.exe
Size

170KB
MD5

f5fd4237e550503a8eab51ae35f147b6
SHA1

869d44d58fb734b3692500dae1f42f0d6e3b3434
SHA256

6fb0201dac82a2b6f3c409d74005eb50aab93abd7508f513636be051db86eefd
SHA512

32327ca44e09d46ba8e656124f7480979b3eeb3769a94259d536a5223b2c532bd21654d8b4551d26265903f5c2be87a8da73d4571eee6fd9bfc887ea9e88350f
SSDEEP

1536:Js5KSNeteSXSI4nZ7OyP8p7+C1xIhQ6M3dfUMJn325pDedDT50ZXXKVXRKX:e5ScSHCO1p7hiO4AI1edHK56lR

Score

10^/10

tofsee evasion persistence trojan

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

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

2428 netsh.exe

pid	process
2428	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\hlpplxpf\ImagePath = "C:\\Windows\\SysWOW64\\hlpplxpf\\orkvveff.exe"	svchost.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

2452 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

orkvveff.exe

pid process

2764 orkvveff.exe
Drops file in System32 directory 1 IoCs

Processes:

svchost.exe

description ioc process

File created C:\Windows\SysWOW64\config\systemprofile:.repos svchost.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

orkvveff.exe

description pid process target process

PID 2764 set thread context of 2452 2764 orkvveff.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

2660 sc.exe
2536 sc.exe
2520 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2452	svchost.exe

pid	process
2764	orkvveff.exe

description	ioc	process
File created	C:\Windows\SysWOW64\config\systemprofile:.repos	svchost.exe

description	pid	process	target process
PID 2764 set thread context of 2452	2764	orkvveff.exe	svchost.exe

pid	process
2660	sc.exe
2536	sc.exe
2520	sc.exe

Modifies data under HKEY_USERS 2 IoCs

Processes:

svchost.exe

description	ioc	process
Key created	\REGISTRY\USER\.DEFAULT\Control Panel\Buses	svchost.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Control Panel\Buses\Config0 = 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	svchost.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

6fb0201dac82a2b6f3c409d74005eb50aab93abd7508f513636be051db86eefd.exeorkvveff.exe

description	pid	process	target process
PID 2360 wrote to memory of 2584	2360	6fb0201dac82a2b6f3c409d74005eb50aab93abd7508f513636be051db86eefd.exe	cmd.exe
PID 2360 wrote to memory of 2584	2360	6fb0201dac82a2b6f3c409d74005eb50aab93abd7508f513636be051db86eefd.exe	cmd.exe
PID 2360 wrote to memory of 2584	2360	6fb0201dac82a2b6f3c409d74005eb50aab93abd7508f513636be051db86eefd.exe	cmd.exe
PID 2360 wrote to memory of 2584	2360	6fb0201dac82a2b6f3c409d74005eb50aab93abd7508f513636be051db86eefd.exe	cmd.exe
PID 2360 wrote to memory of 2108	2360	6fb0201dac82a2b6f3c409d74005eb50aab93abd7508f513636be051db86eefd.exe	cmd.exe
PID 2360 wrote to memory of 2108	2360	6fb0201dac82a2b6f3c409d74005eb50aab93abd7508f513636be051db86eefd.exe	cmd.exe
PID 2360 wrote to memory of 2108	2360	6fb0201dac82a2b6f3c409d74005eb50aab93abd7508f513636be051db86eefd.exe	cmd.exe
PID 2360 wrote to memory of 2108	2360	6fb0201dac82a2b6f3c409d74005eb50aab93abd7508f513636be051db86eefd.exe	cmd.exe
PID 2360 wrote to memory of 2660	2360	6fb0201dac82a2b6f3c409d74005eb50aab93abd7508f513636be051db86eefd.exe	sc.exe
PID 2360 wrote to memory of 2660	2360	6fb0201dac82a2b6f3c409d74005eb50aab93abd7508f513636be051db86eefd.exe	sc.exe
PID 2360 wrote to memory of 2660	2360	6fb0201dac82a2b6f3c409d74005eb50aab93abd7508f513636be051db86eefd.exe	sc.exe
PID 2360 wrote to memory of 2660	2360	6fb0201dac82a2b6f3c409d74005eb50aab93abd7508f513636be051db86eefd.exe	sc.exe
PID 2360 wrote to memory of 2536	2360	6fb0201dac82a2b6f3c409d74005eb50aab93abd7508f513636be051db86eefd.exe	sc.exe
PID 2360 wrote to memory of 2536	2360	6fb0201dac82a2b6f3c409d74005eb50aab93abd7508f513636be051db86eefd.exe	sc.exe
PID 2360 wrote to memory of 2536	2360	6fb0201dac82a2b6f3c409d74005eb50aab93abd7508f513636be051db86eefd.exe	sc.exe
PID 2360 wrote to memory of 2536	2360	6fb0201dac82a2b6f3c409d74005eb50aab93abd7508f513636be051db86eefd.exe	sc.exe
PID 2360 wrote to memory of 2520	2360	6fb0201dac82a2b6f3c409d74005eb50aab93abd7508f513636be051db86eefd.exe	sc.exe
PID 2360 wrote to memory of 2520	2360	6fb0201dac82a2b6f3c409d74005eb50aab93abd7508f513636be051db86eefd.exe	sc.exe
PID 2360 wrote to memory of 2520	2360	6fb0201dac82a2b6f3c409d74005eb50aab93abd7508f513636be051db86eefd.exe	sc.exe
PID 2360 wrote to memory of 2520	2360	6fb0201dac82a2b6f3c409d74005eb50aab93abd7508f513636be051db86eefd.exe	sc.exe
PID 2360 wrote to memory of 2428	2360	6fb0201dac82a2b6f3c409d74005eb50aab93abd7508f513636be051db86eefd.exe	netsh.exe
PID 2360 wrote to memory of 2428	2360	6fb0201dac82a2b6f3c409d74005eb50aab93abd7508f513636be051db86eefd.exe	netsh.exe
PID 2360 wrote to memory of 2428	2360	6fb0201dac82a2b6f3c409d74005eb50aab93abd7508f513636be051db86eefd.exe	netsh.exe
PID 2360 wrote to memory of 2428	2360	6fb0201dac82a2b6f3c409d74005eb50aab93abd7508f513636be051db86eefd.exe	netsh.exe
PID 2764 wrote to memory of 2452	2764	orkvveff.exe	svchost.exe
PID 2764 wrote to memory of 2452	2764	orkvveff.exe	svchost.exe
PID 2764 wrote to memory of 2452	2764	orkvveff.exe	svchost.exe
PID 2764 wrote to memory of 2452	2764	orkvveff.exe	svchost.exe
PID 2764 wrote to memory of 2452	2764	orkvveff.exe	svchost.exe
PID 2764 wrote to memory of 2452	2764	orkvveff.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\6fb0201dac82a2b6f3c409d74005eb50aab93abd7508f513636be051db86eefd.exe
"C:\Users\Admin\AppData\Local\Temp\6fb0201dac82a2b6f3c409d74005eb50aab93abd7508f513636be051db86eefd.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2360

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\hlpplxpf\
2⤵
PID:2584

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\orkvveff.exe" C:\Windows\SysWOW64\hlpplxpf\
2⤵
PID:2108

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create hlpplxpf binPath= "C:\Windows\SysWOW64\hlpplxpf\orkvveff.exe /d\"C:\Users\Admin\AppData\Local\Temp\6fb0201dac82a2b6f3c409d74005eb50aab93abd7508f513636be051db86eefd.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:2660

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

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start hlpplxpf
2⤵
- Launches sc.exe
PID:2520

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:2428

C:\Windows\SysWOW64\hlpplxpf\orkvveff.exe
C:\Windows\SysWOW64\hlpplxpf\orkvveff.exe /d"C:\Users\Admin\AppData\Local\Temp\6fb0201dac82a2b6f3c409d74005eb50aab93abd7508f513636be051db86eefd.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2764

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Sets service image path in registry
- Deletes itself
- Drops file in System32 directory
- Modifies data under HKEY_USERS
PID:2452

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

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\orkvveff.exe
Filesize
10.3MB

MD5
2782070e409aa1abebf4f97d926190dc

SHA1
d9c143396b4eb6164b643adb9f15098d20ee5e8a

SHA256
74d86741e311ae38b9362dd1833ec05eb1d433c32ecc53d85ff2b1940d8f0a50

SHA512
509cdf5dbbbc6a19a165a43d218a8b7a80bf3754a8f94dbb2002fa524be1e86bc39db6b6f528f856b4997bd7b1a39a37d656adb792401565bf5084e489df2281

Download Submit
memory/2360-3-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/2360-4-0x0000000000400000-0x0000000000474000-memory.dmp

Filesize
464KB

Download
memory/2360-7-0x0000000000400000-0x0000000000474000-memory.dmp

Filesize
464KB

Download
memory/2360-1-0x0000000000640000-0x0000000000740000-memory.dmp

Filesize
1024KB

Download
memory/2452-31-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2452-33-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2452-11-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2452-10-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2452-32-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2452-27-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2764-12-0x0000000000400000-0x0000000000474000-memory.dmp

Filesize
464KB

Download
memory/2764-28-0x0000000000400000-0x0000000000474000-memory.dmp

Filesize
464KB

Download
memory/2764-16-0x00000000005F0000-0x00000000006F0000-memory.dmp

Filesize
1024KB

Download
memory/2764-9-0x00000000005F0000-0x00000000006F0000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads