tofsee | 0f1625c8dfa3634a83f6a378fba14c07da2289d78881bc10b03ff06b87f3597d

General

Target

a2f750ea33e71a374a0e40cb66bad6cb.exe
Size

10.7MB
MD5

a2f750ea33e71a374a0e40cb66bad6cb
SHA1

c13139c6d890e4c4fa7772751c4459a74f9ec382
SHA256

0f1625c8dfa3634a83f6a378fba14c07da2289d78881bc10b03ff06b87f3597d
SHA512

739f55776c23f55646261154873fc3c29ed53506e54703d2989ac796443b65947b197a71b7a21f273d2d81c299759d8247f3d2be9a58004e02aa02a8ddc66f80

Score

10^/10

tofsee evasion persistence trojan

Malware Config

Signatures

Tofsee
Backdoor/botnet which carries out malicious activities based on commands from a C2 server.
trojan tofsee
Windows security bypass 2 TTPs
evasion trojan

Disabling Security Tools
T1089

Modify Registry
T1112
Creates new service(s) 1 TTPs
persistence

New Service
T1050
Executes dropped EXE 1 IoCs

Processes:

edneywlx.exe

pid process

968 edneywlx.exe
Modifies Windows Firewall 1 TTPs
evasion

Modify Existing Service
T1031
Sets service image path in registry 2 TTPs
persistence

Registry Run Keys / Startup Folder
T1060

Modify Registry
T1112
Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

1056 svchost.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

edneywlx.exe

description pid process target process

PID 968 set thread context of 1056 968 edneywlx.exe svchost.exe
Launches sc.exe
Sc.exe is a Windows utlilty to control services on the system.

pid	process
968	edneywlx.exe

pid	process
1056	svchost.exe

description	pid	process	target process
PID 968 set thread context of 1056	968	edneywlx.exe	svchost.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

a2f750ea33e71a374a0e40cb66bad6cb.exeedneywlx.exe

description	pid	process	target process
PID 1656 wrote to memory of 772	1656	a2f750ea33e71a374a0e40cb66bad6cb.exe	cmd.exe
PID 1656 wrote to memory of 772	1656	a2f750ea33e71a374a0e40cb66bad6cb.exe	cmd.exe
PID 1656 wrote to memory of 772	1656	a2f750ea33e71a374a0e40cb66bad6cb.exe	cmd.exe
PID 1656 wrote to memory of 772	1656	a2f750ea33e71a374a0e40cb66bad6cb.exe	cmd.exe
PID 1656 wrote to memory of 1744	1656	a2f750ea33e71a374a0e40cb66bad6cb.exe	cmd.exe
PID 1656 wrote to memory of 1744	1656	a2f750ea33e71a374a0e40cb66bad6cb.exe	cmd.exe
PID 1656 wrote to memory of 1744	1656	a2f750ea33e71a374a0e40cb66bad6cb.exe	cmd.exe
PID 1656 wrote to memory of 1744	1656	a2f750ea33e71a374a0e40cb66bad6cb.exe	cmd.exe
PID 1656 wrote to memory of 1368	1656	a2f750ea33e71a374a0e40cb66bad6cb.exe	sc.exe
PID 1656 wrote to memory of 1368	1656	a2f750ea33e71a374a0e40cb66bad6cb.exe	sc.exe
PID 1656 wrote to memory of 1368	1656	a2f750ea33e71a374a0e40cb66bad6cb.exe	sc.exe
PID 1656 wrote to memory of 1368	1656	a2f750ea33e71a374a0e40cb66bad6cb.exe	sc.exe
PID 1656 wrote to memory of 1636	1656	a2f750ea33e71a374a0e40cb66bad6cb.exe	sc.exe
PID 1656 wrote to memory of 1636	1656	a2f750ea33e71a374a0e40cb66bad6cb.exe	sc.exe
PID 1656 wrote to memory of 1636	1656	a2f750ea33e71a374a0e40cb66bad6cb.exe	sc.exe
PID 1656 wrote to memory of 1636	1656	a2f750ea33e71a374a0e40cb66bad6cb.exe	sc.exe
PID 1656 wrote to memory of 1572	1656	a2f750ea33e71a374a0e40cb66bad6cb.exe	sc.exe
PID 1656 wrote to memory of 1572	1656	a2f750ea33e71a374a0e40cb66bad6cb.exe	sc.exe
PID 1656 wrote to memory of 1572	1656	a2f750ea33e71a374a0e40cb66bad6cb.exe	sc.exe
PID 1656 wrote to memory of 1572	1656	a2f750ea33e71a374a0e40cb66bad6cb.exe	sc.exe
PID 1656 wrote to memory of 1100	1656	a2f750ea33e71a374a0e40cb66bad6cb.exe	netsh.exe
PID 1656 wrote to memory of 1100	1656	a2f750ea33e71a374a0e40cb66bad6cb.exe	netsh.exe
PID 1656 wrote to memory of 1100	1656	a2f750ea33e71a374a0e40cb66bad6cb.exe	netsh.exe
PID 1656 wrote to memory of 1100	1656	a2f750ea33e71a374a0e40cb66bad6cb.exe	netsh.exe
PID 968 wrote to memory of 1056	968	edneywlx.exe	svchost.exe
PID 968 wrote to memory of 1056	968	edneywlx.exe	svchost.exe
PID 968 wrote to memory of 1056	968	edneywlx.exe	svchost.exe
PID 968 wrote to memory of 1056	968	edneywlx.exe	svchost.exe
PID 968 wrote to memory of 1056	968	edneywlx.exe	svchost.exe
PID 968 wrote to memory of 1056	968	edneywlx.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\a2f750ea33e71a374a0e40cb66bad6cb.exe
"C:\Users\Admin\AppData\Local\Temp\a2f750ea33e71a374a0e40cb66bad6cb.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1656

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\dblmjljc\
2⤵
PID:772

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\edneywlx.exe" C:\Windows\SysWOW64\dblmjljc\
2⤵
PID:1744

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create dblmjljc binPath= "C:\Windows\SysWOW64\dblmjljc\edneywlx.exe /d\"C:\Users\Admin\AppData\Local\Temp\a2f750ea33e71a374a0e40cb66bad6cb.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
PID:1368

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description dblmjljc "wifi internet conection"
2⤵
PID:1636

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start dblmjljc
2⤵
PID:1572

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⤵
PID:1100

C:\Windows\SysWOW64\dblmjljc\edneywlx.exe
C:\Windows\SysWOW64\dblmjljc\edneywlx.exe /d"C:\Users\Admin\AppData\Local\Temp\a2f750ea33e71a374a0e40cb66bad6cb.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:968

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Deletes itself
PID:1056

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Modify Existing Service

New Service

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

New Service

1

T1050

Defense Evasion

Disabling Security Tools

Modify Registry

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

MD5
a0fc0b8ee4cb52f4ed8952ac211c150d

SHA1
4f65823c822e1b3936fed47544a3f4f24cc673fa

SHA256
964e6abe8e7f229118a4eedc2116e030bca365834e0639b00837fed7536ebb40

SHA512
635e4165a5e227e61136ed8d5d814f0237be5963f75f34746af42e857ce3559702374f231adc654dee1d3747195ddc41862bfd0faf0b8b6c5a261d5af7806f3c

Download Submit
C:\Windows\SysWOW64\dblmjljc\edneywlx.exe

MD5
a0fc0b8ee4cb52f4ed8952ac211c150d

SHA1
4f65823c822e1b3936fed47544a3f4f24cc673fa

SHA256
964e6abe8e7f229118a4eedc2116e030bca365834e0639b00837fed7536ebb40

SHA512
635e4165a5e227e61136ed8d5d814f0237be5963f75f34746af42e857ce3559702374f231adc654dee1d3747195ddc41862bfd0faf0b8b6c5a261d5af7806f3c

Download Submit
memory/772-2-0x0000000000000000-mapping.dmp

Download
memory/1056-10-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/1056-11-0x00000000000C9A6B-mapping.dmp

Download
memory/1100-8-0x0000000000000000-mapping.dmp

Download
memory/1368-5-0x0000000000000000-mapping.dmp

Download
memory/1572-7-0x0000000000000000-mapping.dmp

Download
memory/1636-6-0x0000000000000000-mapping.dmp

Download
memory/1744-3-0x0000000000000000-mapping.dmp

Download

Analysis

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