tofsee | 8dea29eb868a36b9a4a8d00e8aa9a8e68f720cb50ebdab0b6dbb650ba1c7935c

General

Target

ae671935e94e00c6ac5cd59a91401339.exe
Size

11.7MB
MD5

ae671935e94e00c6ac5cd59a91401339
SHA1

946abd7d7fce2ae16ddaf16349667e225762dfe4
SHA256

8dea29eb868a36b9a4a8d00e8aa9a8e68f720cb50ebdab0b6dbb650ba1c7935c
SHA512

7e0f55480e102510d6d7edb2c3400f61feefd56557debf03ff0fa7d9ffab50b76d1872f9b65f5f2a39a0020c7b70c049f812c1e253689a7379cf1ca937f5fe32

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:

orxrgrci.exe

pid process

3152 orxrgrci.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

2076 svchost.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

orxrgrci.exe

description pid process target process

PID 3152 set thread context of 2076 3152 orxrgrci.exe svchost.exe
Launches sc.exe
Sc.exe is a Windows utlilty to control services on the system.

pid	process
3152	orxrgrci.exe

pid	process
2076	svchost.exe

description	pid	process	target process
PID 3152 set thread context of 2076	3152	orxrgrci.exe	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

ae671935e94e00c6ac5cd59a91401339.exeorxrgrci.exe

description	pid	process	target process
PID 4052 wrote to memory of 3980	4052	ae671935e94e00c6ac5cd59a91401339.exe	cmd.exe
PID 4052 wrote to memory of 3980	4052	ae671935e94e00c6ac5cd59a91401339.exe	cmd.exe
PID 4052 wrote to memory of 3980	4052	ae671935e94e00c6ac5cd59a91401339.exe	cmd.exe
PID 4052 wrote to memory of 3884	4052	ae671935e94e00c6ac5cd59a91401339.exe	cmd.exe
PID 4052 wrote to memory of 3884	4052	ae671935e94e00c6ac5cd59a91401339.exe	cmd.exe
PID 4052 wrote to memory of 3884	4052	ae671935e94e00c6ac5cd59a91401339.exe	cmd.exe
PID 4052 wrote to memory of 208	4052	ae671935e94e00c6ac5cd59a91401339.exe	sc.exe
PID 4052 wrote to memory of 208	4052	ae671935e94e00c6ac5cd59a91401339.exe	sc.exe
PID 4052 wrote to memory of 208	4052	ae671935e94e00c6ac5cd59a91401339.exe	sc.exe
PID 4052 wrote to memory of 3844	4052	ae671935e94e00c6ac5cd59a91401339.exe	sc.exe
PID 4052 wrote to memory of 3844	4052	ae671935e94e00c6ac5cd59a91401339.exe	sc.exe
PID 4052 wrote to memory of 3844	4052	ae671935e94e00c6ac5cd59a91401339.exe	sc.exe
PID 4052 wrote to memory of 2120	4052	ae671935e94e00c6ac5cd59a91401339.exe	sc.exe
PID 4052 wrote to memory of 2120	4052	ae671935e94e00c6ac5cd59a91401339.exe	sc.exe
PID 4052 wrote to memory of 2120	4052	ae671935e94e00c6ac5cd59a91401339.exe	sc.exe
PID 4052 wrote to memory of 3876	4052	ae671935e94e00c6ac5cd59a91401339.exe	netsh.exe
PID 4052 wrote to memory of 3876	4052	ae671935e94e00c6ac5cd59a91401339.exe	netsh.exe
PID 4052 wrote to memory of 3876	4052	ae671935e94e00c6ac5cd59a91401339.exe	netsh.exe
PID 3152 wrote to memory of 2076	3152	orxrgrci.exe	svchost.exe
PID 3152 wrote to memory of 2076	3152	orxrgrci.exe	svchost.exe
PID 3152 wrote to memory of 2076	3152	orxrgrci.exe	svchost.exe
PID 3152 wrote to memory of 2076	3152	orxrgrci.exe	svchost.exe
PID 3152 wrote to memory of 2076	3152	orxrgrci.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\ae671935e94e00c6ac5cd59a91401339.exe
"C:\Users\Admin\AppData\Local\Temp\ae671935e94e00c6ac5cd59a91401339.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:4052

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ohkxcdwe\
2⤵
PID:3980

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\orxrgrci.exe" C:\Windows\SysWOW64\ohkxcdwe\
2⤵
PID:3884

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create ohkxcdwe binPath= "C:\Windows\SysWOW64\ohkxcdwe\orxrgrci.exe /d\"C:\Users\Admin\AppData\Local\Temp\ae671935e94e00c6ac5cd59a91401339.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
PID:208

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description ohkxcdwe "wifi internet conection"
2⤵
PID:3844

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start ohkxcdwe
2⤵
PID:2120

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:3876

C:\Windows\SysWOW64\ohkxcdwe\orxrgrci.exe
C:\Windows\SysWOW64\ohkxcdwe\orxrgrci.exe /d"C:\Users\Admin\AppData\Local\Temp\ae671935e94e00c6ac5cd59a91401339.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3152

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Deletes itself
PID:2076

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\orxrgrci.exe
MD5
0e7bc915182d2c168803acfaffb7fe9c

SHA1
8a761cc25f05a8b61d8f509b5c34871466420e48

SHA256
9b70b8bd04c8ab2d25ebf024b23cbf44f541c6a835d0b0b4cd35e71c284baa14

SHA512
3b57cb0a86183bf91096844a3bbea5d4a1d1c8875c75776cb6f0b2ebfbd8579cfa7570d28c91d5a4bb24314607ab1f6e2c3a461aa0aaedc5190df28745d115c1

Download Submit
C:\Windows\SysWOW64\ohkxcdwe\orxrgrci.exe
MD5
0e7bc915182d2c168803acfaffb7fe9c

SHA1
8a761cc25f05a8b61d8f509b5c34871466420e48

SHA256
9b70b8bd04c8ab2d25ebf024b23cbf44f541c6a835d0b0b4cd35e71c284baa14

SHA512
3b57cb0a86183bf91096844a3bbea5d4a1d1c8875c75776cb6f0b2ebfbd8579cfa7570d28c91d5a4bb24314607ab1f6e2c3a461aa0aaedc5190df28745d115c1

Download Submit
memory/208-7-0x0000000000000000-mapping.dmp

Download
memory/2076-17-0x0000000000960000-0x0000000000975000-memory.dmp

Filesize
84KB

Download
memory/2076-16-0x0000000000969A6B-mapping.dmp

Download
memory/2076-15-0x0000000000960000-0x0000000000975000-memory.dmp

Filesize
84KB

Download
memory/2120-9-0x0000000000000000-mapping.dmp

Download
memory/3152-14-0x00000000050F0000-0x00000000050F1000-memory.dmp

Filesize
4KB

Download
memory/3152-12-0x0000000004741000-0x0000000004742000-memory.dmp

Filesize
4KB

Download
memory/3152-13-0x00000000050F0000-0x00000000050F1000-memory.dmp

Filesize
4KB

Download
memory/3844-8-0x0000000000000000-mapping.dmp

Download
memory/3876-11-0x0000000000000000-mapping.dmp

Download
memory/3884-5-0x0000000000000000-mapping.dmp

Download
memory/3980-4-0x0000000000000000-mapping.dmp

Download
memory/4052-2-0x0000000004896000-0x0000000004897000-memory.dmp

Filesize
4KB

Download
memory/4052-3-0x0000000006460000-0x0000000006461000-memory.dmp

Filesize
4KB

Download

Analysis

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