tofsee | 5da40e2bd0bbe8d8c6fe3e010e43d231861cc69dcb3252ee5dbe70c60f3e1808

General

Target

5da40e2bd0bbe8d8c6fe3e010e43d231861cc69dcb3252ee5dbe70c60f3e1808.exe
Size

102KB
MD5

b179524b99b575e5f77cee6207521f13
SHA1

1b7edee9230f3468841a979e11eb9e310c584103
SHA256

5da40e2bd0bbe8d8c6fe3e010e43d231861cc69dcb3252ee5dbe70c60f3e1808
SHA512

42a812884d687121adab289cd28659b006a215e65bf7a58e88d723513fd6573ce274881e576ae021df5a0370674cad60f64ee02863ee277acf0021b9544a6f5b

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

Windows security bypass 2 TTPs 1 IoCs

evasion trojan

Disabling Security Tools

T1089

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\SysWOW64\pwvjrqwh = "0"	svchost.exe

Creates new service(s) 1 TTPs
persistence

New Service
T1050
Executes dropped EXE 1 IoCs

Processes:

fwpszmyx.exe

pid process

852 fwpszmyx.exe
Modifies Windows Firewall 1 TTPs 1 IoCs
evasion

Modify Existing Service
T1031

Processes:

netsh.exe

pid process

1396 netsh.exe

pid	process
852	fwpszmyx.exe

pid	process
1396	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\pwvjrqwh\ImagePath = "C:\\Windows\\SysWOW64\\pwvjrqwh\\fwpszmyx.exe"	svchost.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

1868 svchost.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

fwpszmyx.exe

description pid process target process

PID 852 set thread context of 1868 852 fwpszmyx.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

1272 sc.exe
1728 sc.exe
540 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
1868	svchost.exe

description	pid	process	target process
PID 852 set thread context of 1868	852	fwpszmyx.exe	svchost.exe

pid	process
1272	sc.exe
1728	sc.exe
540	sc.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

5da40e2bd0bbe8d8c6fe3e010e43d231861cc69dcb3252ee5dbe70c60f3e1808.exefwpszmyx.exe

description	pid	process	target process
PID 1984 wrote to memory of 1748	1984	5da40e2bd0bbe8d8c6fe3e010e43d231861cc69dcb3252ee5dbe70c60f3e1808.exe	cmd.exe
PID 1984 wrote to memory of 1748	1984	5da40e2bd0bbe8d8c6fe3e010e43d231861cc69dcb3252ee5dbe70c60f3e1808.exe	cmd.exe
PID 1984 wrote to memory of 1748	1984	5da40e2bd0bbe8d8c6fe3e010e43d231861cc69dcb3252ee5dbe70c60f3e1808.exe	cmd.exe
PID 1984 wrote to memory of 1748	1984	5da40e2bd0bbe8d8c6fe3e010e43d231861cc69dcb3252ee5dbe70c60f3e1808.exe	cmd.exe
PID 1984 wrote to memory of 1444	1984	5da40e2bd0bbe8d8c6fe3e010e43d231861cc69dcb3252ee5dbe70c60f3e1808.exe	cmd.exe
PID 1984 wrote to memory of 1444	1984	5da40e2bd0bbe8d8c6fe3e010e43d231861cc69dcb3252ee5dbe70c60f3e1808.exe	cmd.exe
PID 1984 wrote to memory of 1444	1984	5da40e2bd0bbe8d8c6fe3e010e43d231861cc69dcb3252ee5dbe70c60f3e1808.exe	cmd.exe
PID 1984 wrote to memory of 1444	1984	5da40e2bd0bbe8d8c6fe3e010e43d231861cc69dcb3252ee5dbe70c60f3e1808.exe	cmd.exe
PID 1984 wrote to memory of 1272	1984	5da40e2bd0bbe8d8c6fe3e010e43d231861cc69dcb3252ee5dbe70c60f3e1808.exe	sc.exe
PID 1984 wrote to memory of 1272	1984	5da40e2bd0bbe8d8c6fe3e010e43d231861cc69dcb3252ee5dbe70c60f3e1808.exe	sc.exe
PID 1984 wrote to memory of 1272	1984	5da40e2bd0bbe8d8c6fe3e010e43d231861cc69dcb3252ee5dbe70c60f3e1808.exe	sc.exe
PID 1984 wrote to memory of 1272	1984	5da40e2bd0bbe8d8c6fe3e010e43d231861cc69dcb3252ee5dbe70c60f3e1808.exe	sc.exe
PID 1984 wrote to memory of 1728	1984	5da40e2bd0bbe8d8c6fe3e010e43d231861cc69dcb3252ee5dbe70c60f3e1808.exe	sc.exe
PID 1984 wrote to memory of 1728	1984	5da40e2bd0bbe8d8c6fe3e010e43d231861cc69dcb3252ee5dbe70c60f3e1808.exe	sc.exe
PID 1984 wrote to memory of 1728	1984	5da40e2bd0bbe8d8c6fe3e010e43d231861cc69dcb3252ee5dbe70c60f3e1808.exe	sc.exe
PID 1984 wrote to memory of 1728	1984	5da40e2bd0bbe8d8c6fe3e010e43d231861cc69dcb3252ee5dbe70c60f3e1808.exe	sc.exe
PID 1984 wrote to memory of 540	1984	5da40e2bd0bbe8d8c6fe3e010e43d231861cc69dcb3252ee5dbe70c60f3e1808.exe	sc.exe
PID 1984 wrote to memory of 540	1984	5da40e2bd0bbe8d8c6fe3e010e43d231861cc69dcb3252ee5dbe70c60f3e1808.exe	sc.exe
PID 1984 wrote to memory of 540	1984	5da40e2bd0bbe8d8c6fe3e010e43d231861cc69dcb3252ee5dbe70c60f3e1808.exe	sc.exe
PID 1984 wrote to memory of 540	1984	5da40e2bd0bbe8d8c6fe3e010e43d231861cc69dcb3252ee5dbe70c60f3e1808.exe	sc.exe
PID 1984 wrote to memory of 1396	1984	5da40e2bd0bbe8d8c6fe3e010e43d231861cc69dcb3252ee5dbe70c60f3e1808.exe	netsh.exe
PID 1984 wrote to memory of 1396	1984	5da40e2bd0bbe8d8c6fe3e010e43d231861cc69dcb3252ee5dbe70c60f3e1808.exe	netsh.exe
PID 1984 wrote to memory of 1396	1984	5da40e2bd0bbe8d8c6fe3e010e43d231861cc69dcb3252ee5dbe70c60f3e1808.exe	netsh.exe
PID 1984 wrote to memory of 1396	1984	5da40e2bd0bbe8d8c6fe3e010e43d231861cc69dcb3252ee5dbe70c60f3e1808.exe	netsh.exe
PID 852 wrote to memory of 1868	852	fwpszmyx.exe	svchost.exe
PID 852 wrote to memory of 1868	852	fwpszmyx.exe	svchost.exe
PID 852 wrote to memory of 1868	852	fwpszmyx.exe	svchost.exe
PID 852 wrote to memory of 1868	852	fwpszmyx.exe	svchost.exe
PID 852 wrote to memory of 1868	852	fwpszmyx.exe	svchost.exe
PID 852 wrote to memory of 1868	852	fwpszmyx.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\5da40e2bd0bbe8d8c6fe3e010e43d231861cc69dcb3252ee5dbe70c60f3e1808.exe
"C:\Users\Admin\AppData\Local\Temp\5da40e2bd0bbe8d8c6fe3e010e43d231861cc69dcb3252ee5dbe70c60f3e1808.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1984

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\pwvjrqwh\
2⤵
PID:1748

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\fwpszmyx.exe" C:\Windows\SysWOW64\pwvjrqwh\
2⤵
PID:1444

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create pwvjrqwh binPath= "C:\Windows\SysWOW64\pwvjrqwh\fwpszmyx.exe /d\"C:\Users\Admin\AppData\Local\Temp\5da40e2bd0bbe8d8c6fe3e010e43d231861cc69dcb3252ee5dbe70c60f3e1808.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:1272

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description pwvjrqwh "wifi internet conection"
2⤵
- Launches sc.exe
PID:1728

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start pwvjrqwh
2⤵
- Launches sc.exe
PID:540

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:1396

C:\Windows\SysWOW64\pwvjrqwh\fwpszmyx.exe
C:\Windows\SysWOW64\pwvjrqwh\fwpszmyx.exe /d"C:\Users\Admin\AppData\Local\Temp\5da40e2bd0bbe8d8c6fe3e010e43d231861cc69dcb3252ee5dbe70c60f3e1808.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:852

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Windows security bypass
- Sets service image path in registry
- Deletes itself
PID:1868

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

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\fwpszmyx.exe
Filesize
10.8MB

MD5
17d550d43c833f40dfa931a9d58ea3d8

SHA1
e654dd79e0dfd2b252e4cc77236816cb2d9a32df

SHA256
f0f72f80b192806ccd11b3f50884b7354428532d4b02db99e6d9ccacad86b946

SHA512
f1dc63fbc529756d5932923d7b32db6b27a91c359df941bccc9473966d03265c2201373ced53117f9202bab5081aec87e3d7b30cf4337bc967a80a73522fba40

Download Submit
C:\Windows\SysWOW64\pwvjrqwh\fwpszmyx.exe
Filesize
10.8MB

MD5
17d550d43c833f40dfa931a9d58ea3d8

SHA1
e654dd79e0dfd2b252e4cc77236816cb2d9a32df

SHA256
f0f72f80b192806ccd11b3f50884b7354428532d4b02db99e6d9ccacad86b946

SHA512
f1dc63fbc529756d5932923d7b32db6b27a91c359df941bccc9473966d03265c2201373ced53117f9202bab5081aec87e3d7b30cf4337bc967a80a73522fba40

Download Submit
memory/540-61-0x0000000000000000-mapping.dmp

Download
memory/852-64-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/1272-59-0x0000000000000000-mapping.dmp

Download
memory/1396-62-0x0000000000000000-mapping.dmp

Download
memory/1444-57-0x0000000000000000-mapping.dmp

Download
memory/1728-60-0x0000000000000000-mapping.dmp

Download
memory/1748-56-0x0000000000000000-mapping.dmp

Download
memory/1868-66-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/1868-68-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/1868-69-0x00000000000C9A6B-mapping.dmp

Download
memory/1868-74-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/1868-75-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/1984-54-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/1984-55-0x0000000075441000-0x0000000075443000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads