tofsee | 295f2e7a08269def791aa11bfafa9d73e36ac9fa6dd292f2b62b1bcf8758aa11

General

Target

295f2e7a08269def791aa11bfafa9d73e36ac9fa6dd292f2b62b1bcf8758aa11.exe
Size

342KB
MD5

9b2b3970effdd49a3194b83a272b29bd
SHA1

9c141b488d126a2e7f25b541d14307acec0e6262
SHA256

295f2e7a08269def791aa11bfafa9d73e36ac9fa6dd292f2b62b1bcf8758aa11
SHA512

005dc7ff7bedbb07add0f048690dae179f17421e20ec9f3f63c5f54c65966752a9e46dc062ecbdbcbca7dd92591ac70822eb21c595ef453752ef878cf15a8d7c

Score

10^/10

tofsee evasion persistence trojan

Malware Config

Extracted

Family

tofsee

C2

43.231.4.7

lazystax.ru

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

New Service
T1050
Executes dropped EXE 1 IoCs

Processes:

wnjqhgko.exe

pid process

672 wnjqhgko.exe
Modifies Windows Firewall 1 TTPs 1 IoCs
evasion

Modify Existing Service
T1031

Processes:

netsh.exe

pid process

892 netsh.exe

pid	process
672	wnjqhgko.exe

pid	process
892	netsh.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\jsxxetac\ImagePath = "C:\\Windows\\SysWOW64\\jsxxetac\\wnjqhgko.exe"	svchost.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

1560 svchost.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

wnjqhgko.exe

description pid process target process

PID 672 set thread context of 1560 672 wnjqhgko.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

2044 sc.exe
932 sc.exe
1396 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

pid	process
1560	svchost.exe

description	pid	process	target process
PID 672 set thread context of 1560	672	wnjqhgko.exe	svchost.exe

pid	process
2044	sc.exe
932	sc.exe
1396	sc.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

295f2e7a08269def791aa11bfafa9d73e36ac9fa6dd292f2b62b1bcf8758aa11.exewnjqhgko.exe

description	pid	process	target process
PID 1356 wrote to memory of 988	1356	295f2e7a08269def791aa11bfafa9d73e36ac9fa6dd292f2b62b1bcf8758aa11.exe	cmd.exe
PID 1356 wrote to memory of 988	1356	295f2e7a08269def791aa11bfafa9d73e36ac9fa6dd292f2b62b1bcf8758aa11.exe	cmd.exe
PID 1356 wrote to memory of 988	1356	295f2e7a08269def791aa11bfafa9d73e36ac9fa6dd292f2b62b1bcf8758aa11.exe	cmd.exe
PID 1356 wrote to memory of 988	1356	295f2e7a08269def791aa11bfafa9d73e36ac9fa6dd292f2b62b1bcf8758aa11.exe	cmd.exe
PID 1356 wrote to memory of 1320	1356	295f2e7a08269def791aa11bfafa9d73e36ac9fa6dd292f2b62b1bcf8758aa11.exe	cmd.exe
PID 1356 wrote to memory of 1320	1356	295f2e7a08269def791aa11bfafa9d73e36ac9fa6dd292f2b62b1bcf8758aa11.exe	cmd.exe
PID 1356 wrote to memory of 1320	1356	295f2e7a08269def791aa11bfafa9d73e36ac9fa6dd292f2b62b1bcf8758aa11.exe	cmd.exe
PID 1356 wrote to memory of 1320	1356	295f2e7a08269def791aa11bfafa9d73e36ac9fa6dd292f2b62b1bcf8758aa11.exe	cmd.exe
PID 1356 wrote to memory of 2044	1356	295f2e7a08269def791aa11bfafa9d73e36ac9fa6dd292f2b62b1bcf8758aa11.exe	sc.exe
PID 1356 wrote to memory of 2044	1356	295f2e7a08269def791aa11bfafa9d73e36ac9fa6dd292f2b62b1bcf8758aa11.exe	sc.exe
PID 1356 wrote to memory of 2044	1356	295f2e7a08269def791aa11bfafa9d73e36ac9fa6dd292f2b62b1bcf8758aa11.exe	sc.exe
PID 1356 wrote to memory of 2044	1356	295f2e7a08269def791aa11bfafa9d73e36ac9fa6dd292f2b62b1bcf8758aa11.exe	sc.exe
PID 1356 wrote to memory of 932	1356	295f2e7a08269def791aa11bfafa9d73e36ac9fa6dd292f2b62b1bcf8758aa11.exe	sc.exe
PID 1356 wrote to memory of 932	1356	295f2e7a08269def791aa11bfafa9d73e36ac9fa6dd292f2b62b1bcf8758aa11.exe	sc.exe
PID 1356 wrote to memory of 932	1356	295f2e7a08269def791aa11bfafa9d73e36ac9fa6dd292f2b62b1bcf8758aa11.exe	sc.exe
PID 1356 wrote to memory of 932	1356	295f2e7a08269def791aa11bfafa9d73e36ac9fa6dd292f2b62b1bcf8758aa11.exe	sc.exe
PID 1356 wrote to memory of 1396	1356	295f2e7a08269def791aa11bfafa9d73e36ac9fa6dd292f2b62b1bcf8758aa11.exe	sc.exe
PID 1356 wrote to memory of 1396	1356	295f2e7a08269def791aa11bfafa9d73e36ac9fa6dd292f2b62b1bcf8758aa11.exe	sc.exe
PID 1356 wrote to memory of 1396	1356	295f2e7a08269def791aa11bfafa9d73e36ac9fa6dd292f2b62b1bcf8758aa11.exe	sc.exe
PID 1356 wrote to memory of 1396	1356	295f2e7a08269def791aa11bfafa9d73e36ac9fa6dd292f2b62b1bcf8758aa11.exe	sc.exe
PID 1356 wrote to memory of 892	1356	295f2e7a08269def791aa11bfafa9d73e36ac9fa6dd292f2b62b1bcf8758aa11.exe	netsh.exe
PID 1356 wrote to memory of 892	1356	295f2e7a08269def791aa11bfafa9d73e36ac9fa6dd292f2b62b1bcf8758aa11.exe	netsh.exe
PID 1356 wrote to memory of 892	1356	295f2e7a08269def791aa11bfafa9d73e36ac9fa6dd292f2b62b1bcf8758aa11.exe	netsh.exe
PID 1356 wrote to memory of 892	1356	295f2e7a08269def791aa11bfafa9d73e36ac9fa6dd292f2b62b1bcf8758aa11.exe	netsh.exe
PID 672 wrote to memory of 1560	672	wnjqhgko.exe	svchost.exe
PID 672 wrote to memory of 1560	672	wnjqhgko.exe	svchost.exe
PID 672 wrote to memory of 1560	672	wnjqhgko.exe	svchost.exe
PID 672 wrote to memory of 1560	672	wnjqhgko.exe	svchost.exe
PID 672 wrote to memory of 1560	672	wnjqhgko.exe	svchost.exe
PID 672 wrote to memory of 1560	672	wnjqhgko.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\295f2e7a08269def791aa11bfafa9d73e36ac9fa6dd292f2b62b1bcf8758aa11.exe
"C:\Users\Admin\AppData\Local\Temp\295f2e7a08269def791aa11bfafa9d73e36ac9fa6dd292f2b62b1bcf8758aa11.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1356

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\jsxxetac\
2⤵
PID:988

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\wnjqhgko.exe" C:\Windows\SysWOW64\jsxxetac\
2⤵
PID:1320

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create jsxxetac binPath= "C:\Windows\SysWOW64\jsxxetac\wnjqhgko.exe /d\"C:\Users\Admin\AppData\Local\Temp\295f2e7a08269def791aa11bfafa9d73e36ac9fa6dd292f2b62b1bcf8758aa11.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:2044

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description jsxxetac "wifi internet conection"
2⤵
- Launches sc.exe
PID:932

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start jsxxetac
2⤵
- Launches sc.exe
PID:1396

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:892

C:\Windows\SysWOW64\jsxxetac\wnjqhgko.exe
C:\Windows\SysWOW64\jsxxetac\wnjqhgko.exe /d"C:\Users\Admin\AppData\Local\Temp\295f2e7a08269def791aa11bfafa9d73e36ac9fa6dd292f2b62b1bcf8758aa11.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:672

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Sets service image path in registry
- Deletes itself
PID:1560

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

New Service

1

T1050

Modify Existing Service

1

T1031

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

New Service

1

T1050

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\wnjqhgko.exe
Filesize
14.7MB

MD5
ac6a6856f38540122b02c4025d64b2bc

SHA1
fde5ce9bba13bea8e499d511f45ef374a51535b9

SHA256
799f98fe2cbca6df850ec23558028e55451d0bde88f65d2d4652f2ebb116b903

SHA512
721b5b0f903549d3924761adfe4a8aacfb4568cf294ce0026a249d80cb50559ebc07f99c0edd40e30c56869af3cfc99dd3a4aafccc6aa96bd215d60f90767761

Download Submit
C:\Windows\SysWOW64\jsxxetac\wnjqhgko.exe
Filesize
14.7MB

MD5
ac6a6856f38540122b02c4025d64b2bc

SHA1
fde5ce9bba13bea8e499d511f45ef374a51535b9

SHA256
799f98fe2cbca6df850ec23558028e55451d0bde88f65d2d4652f2ebb116b903

SHA512
721b5b0f903549d3924761adfe4a8aacfb4568cf294ce0026a249d80cb50559ebc07f99c0edd40e30c56869af3cfc99dd3a4aafccc6aa96bd215d60f90767761

Download Submit
memory/672-76-0x0000000000400000-0x000000000046B000-memory.dmp

Filesize
428KB

Download
memory/672-74-0x00000000002C5000-0x00000000002D8000-memory.dmp

Filesize
76KB

Download
memory/672-67-0x00000000002C5000-0x00000000002D8000-memory.dmp

Filesize
76KB

Download
memory/892-65-0x0000000000000000-mapping.dmp

Download
memory/932-62-0x0000000000000000-mapping.dmp

Download
memory/988-58-0x0000000000000000-mapping.dmp

Download
memory/1320-59-0x0000000000000000-mapping.dmp

Download
memory/1356-54-0x0000000000285000-0x0000000000298000-memory.dmp

Filesize
76KB

Download
memory/1356-66-0x0000000000400000-0x000000000046B000-memory.dmp

Filesize
428KB

Download
memory/1356-57-0x0000000000400000-0x000000000046B000-memory.dmp

Filesize
428KB

Download
memory/1356-56-0x0000000000285000-0x0000000000298000-memory.dmp

Filesize
76KB

Download
memory/1356-55-0x0000000075361000-0x0000000075363000-memory.dmp

Filesize
8KB

Download
memory/1396-63-0x0000000000000000-mapping.dmp

Download
memory/1560-69-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1560-71-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1560-72-0x0000000000089A6B-mapping.dmp

Download
memory/1560-79-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1560-80-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2044-61-0x0000000000000000-mapping.dmp

Download

Analysis

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