tofsee | 9b70b8bd04c8ab2d25ebf024b23cbf44f541c6a835d0b0b4cd35e71c284baa14

General

Target

0e7bc915182d2c168803acfaffb7fe9c.exe
Size

11.2MB
MD5

0e7bc915182d2c168803acfaffb7fe9c
SHA1

8a761cc25f05a8b61d8f509b5c34871466420e48
SHA256

9b70b8bd04c8ab2d25ebf024b23cbf44f541c6a835d0b0b4cd35e71c284baa14
SHA512

3b57cb0a86183bf91096844a3bbea5d4a1d1c8875c75776cb6f0b2ebfbd8579cfa7570d28c91d5a4bb24314607ab1f6e2c3a461aa0aaedc5190df28745d115c1

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:

dcqsgdew.exe

pid process

3640 dcqsgdew.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

988 svchost.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

dcqsgdew.exe

description pid process target process

PID 3640 set thread context of 988 3640 dcqsgdew.exe svchost.exe
Launches sc.exe
Sc.exe is a Windows utlilty to control services on the system.

pid	process
3640	dcqsgdew.exe

pid	process
988	svchost.exe

description	pid	process	target process
PID 3640 set thread context of 988	3640	dcqsgdew.exe	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

0e7bc915182d2c168803acfaffb7fe9c.exedcqsgdew.exe

description	pid	process	target process
PID 636 wrote to memory of 3568	636	0e7bc915182d2c168803acfaffb7fe9c.exe	cmd.exe
PID 636 wrote to memory of 3568	636	0e7bc915182d2c168803acfaffb7fe9c.exe	cmd.exe
PID 636 wrote to memory of 3568	636	0e7bc915182d2c168803acfaffb7fe9c.exe	cmd.exe
PID 636 wrote to memory of 2500	636	0e7bc915182d2c168803acfaffb7fe9c.exe	cmd.exe
PID 636 wrote to memory of 2500	636	0e7bc915182d2c168803acfaffb7fe9c.exe	cmd.exe
PID 636 wrote to memory of 2500	636	0e7bc915182d2c168803acfaffb7fe9c.exe	cmd.exe
PID 636 wrote to memory of 196	636	0e7bc915182d2c168803acfaffb7fe9c.exe	sc.exe
PID 636 wrote to memory of 196	636	0e7bc915182d2c168803acfaffb7fe9c.exe	sc.exe
PID 636 wrote to memory of 196	636	0e7bc915182d2c168803acfaffb7fe9c.exe	sc.exe
PID 636 wrote to memory of 3764	636	0e7bc915182d2c168803acfaffb7fe9c.exe	sc.exe
PID 636 wrote to memory of 3764	636	0e7bc915182d2c168803acfaffb7fe9c.exe	sc.exe
PID 636 wrote to memory of 3764	636	0e7bc915182d2c168803acfaffb7fe9c.exe	sc.exe
PID 636 wrote to memory of 1500	636	0e7bc915182d2c168803acfaffb7fe9c.exe	sc.exe
PID 636 wrote to memory of 1500	636	0e7bc915182d2c168803acfaffb7fe9c.exe	sc.exe
PID 636 wrote to memory of 1500	636	0e7bc915182d2c168803acfaffb7fe9c.exe	sc.exe
PID 636 wrote to memory of 3976	636	0e7bc915182d2c168803acfaffb7fe9c.exe	netsh.exe
PID 636 wrote to memory of 3976	636	0e7bc915182d2c168803acfaffb7fe9c.exe	netsh.exe
PID 636 wrote to memory of 3976	636	0e7bc915182d2c168803acfaffb7fe9c.exe	netsh.exe
PID 3640 wrote to memory of 988	3640	dcqsgdew.exe	svchost.exe
PID 3640 wrote to memory of 988	3640	dcqsgdew.exe	svchost.exe
PID 3640 wrote to memory of 988	3640	dcqsgdew.exe	svchost.exe
PID 3640 wrote to memory of 988	3640	dcqsgdew.exe	svchost.exe
PID 3640 wrote to memory of 988	3640	dcqsgdew.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\0e7bc915182d2c168803acfaffb7fe9c.exe
"C:\Users\Admin\AppData\Local\Temp\0e7bc915182d2c168803acfaffb7fe9c.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:636

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\eadqujgu\
2⤵
PID:3568

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\dcqsgdew.exe" C:\Windows\SysWOW64\eadqujgu\
2⤵
PID:2500

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create eadqujgu binPath= "C:\Windows\SysWOW64\eadqujgu\dcqsgdew.exe /d\"C:\Users\Admin\AppData\Local\Temp\0e7bc915182d2c168803acfaffb7fe9c.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
PID:196

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description eadqujgu "wifi internet conection"
2⤵
PID:3764

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start eadqujgu
2⤵
PID:1500

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:3976

C:\Windows\SysWOW64\eadqujgu\dcqsgdew.exe
C:\Windows\SysWOW64\eadqujgu\dcqsgdew.exe /d"C:\Users\Admin\AppData\Local\Temp\0e7bc915182d2c168803acfaffb7fe9c.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3640

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Deletes itself
PID:988

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

Disabling Security Tools

1

T1089

Modify Registry

2

T1112

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\dcqsgdew.exe
MD5
8d6b82f8632a90bd22d98240fc8612a7

SHA1
d117b6b3c1857e094abdb02deccf9940936112b5

SHA256
a24c2fadf859c00084a0276f09109cf0c0afcc871558bd032e34e00121ae7051

SHA512
70429c14aa11e90399b710677c60bf08f7f813bdd4b406b2130285fcaf491f2799b46fbb36ecb50adfa499ca066269cc2bc2ab1f4c6eded0d2d06ab8f81c38b0

Download Submit
C:\Windows\SysWOW64\eadqujgu\dcqsgdew.exe
MD5
8d6b82f8632a90bd22d98240fc8612a7

SHA1
d117b6b3c1857e094abdb02deccf9940936112b5

SHA256
a24c2fadf859c00084a0276f09109cf0c0afcc871558bd032e34e00121ae7051

SHA512
70429c14aa11e90399b710677c60bf08f7f813bdd4b406b2130285fcaf491f2799b46fbb36ecb50adfa499ca066269cc2bc2ab1f4c6eded0d2d06ab8f81c38b0

Download Submit
memory/196-7-0x0000000000000000-mapping.dmp

Download
memory/636-3-0x00000000064F0000-0x00000000064F1000-memory.dmp

Filesize
4KB

Download
memory/636-2-0x0000000004836000-0x0000000004837000-memory.dmp

Filesize
4KB

Download
memory/988-14-0x0000000000A60000-0x0000000000A75000-memory.dmp

Filesize
84KB

Download
memory/988-15-0x0000000000A69A6B-mapping.dmp

Download
memory/1500-9-0x0000000000000000-mapping.dmp

Download
memory/2500-5-0x0000000000000000-mapping.dmp

Download
memory/3568-4-0x0000000000000000-mapping.dmp

Download
memory/3640-12-0x0000000004831000-0x0000000004832000-memory.dmp

Filesize
4KB

Download
memory/3640-13-0x0000000004FF0000-0x0000000004FF1000-memory.dmp

Filesize
4KB

Download
memory/3764-8-0x0000000000000000-mapping.dmp

Download
memory/3976-11-0x0000000000000000-mapping.dmp

Download

Analysis

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