tofsee | 0bbf12439919917796d742e890bb8e3f13aa79f64856c0a9f18cbc8a31ff7b81

General

Target

03b961537434ed16b110e1187856d6fd83887488126e6f36627beff091b1eb72.exe
Size

299KB
MD5

45745cc2b7e41ad2e663e73112e1d4eb
SHA1

27a58c48caedeb235a046e8657c9f05df829a585
SHA256

03b961537434ed16b110e1187856d6fd83887488126e6f36627beff091b1eb72
SHA512

d40f981d7d7bdb8f60db4746f27cb7d4639b181f98e7c1664a8d8c37af95353491bb80a7c75557379e9138256e2398ac90b5e48d02665f11024b54a7d471f805
SSDEEP

6144:C/SlLSuD8yVmbWuM3XPbRO0uQj9JKO48a:CKlG/ykipXI0ljK8

Score

10^/10

tofsee evasion persistence trojan

Malware Config

Extracted

Family

tofsee

C2

svartalfheim.top

jotunheim.name

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\wqflwdtm = "0"	svchost.exe

Creates new service(s) 1 TTPs
persistence

New Service
T1050
Modifies Windows Firewall 1 TTPs 1 IoCs
evasion

Modify Existing Service
T1031

Processes:

netsh.exe

pid process

1128 netsh.exe

pid	process
1128	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\wqflwdtm\ImagePath = "C:\\Windows\\SysWOW64\\wqflwdtm\\jgabygwd.exe"	svchost.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

924 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

jgabygwd.exe

pid process

1884 jgabygwd.exe
Drops file in System32 directory 1 IoCs

Processes:

svchost.exe

description ioc process

File created C:\Windows\SysWOW64\config\systemprofile:.repos svchost.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

jgabygwd.exe

description pid process target process

PID 1884 set thread context of 924 1884 jgabygwd.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

268 sc.exe
1432 sc.exe
556 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
924	svchost.exe

pid	process
1884	jgabygwd.exe

description	ioc	process
File created	C:\Windows\SysWOW64\config\systemprofile:.repos	svchost.exe

description	pid	process	target process
PID 1884 set thread context of 924	1884	jgabygwd.exe	svchost.exe

pid	process
268	sc.exe
1432	sc.exe
556	sc.exe

Modifies data under HKEY_USERS 2 IoCs

Processes:

svchost.exe

description	ioc	process
Key created	\REGISTRY\USER\.DEFAULT\Control Panel\Buses	svchost.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Control Panel\Buses\Config0 = 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	svchost.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

03b961537434ed16b110e1187856d6fd83887488126e6f36627beff091b1eb72.exejgabygwd.exe

description	pid	process	target process
PID 832 wrote to memory of 2024	832	03b961537434ed16b110e1187856d6fd83887488126e6f36627beff091b1eb72.exe	cmd.exe
PID 832 wrote to memory of 2024	832	03b961537434ed16b110e1187856d6fd83887488126e6f36627beff091b1eb72.exe	cmd.exe
PID 832 wrote to memory of 2024	832	03b961537434ed16b110e1187856d6fd83887488126e6f36627beff091b1eb72.exe	cmd.exe
PID 832 wrote to memory of 2024	832	03b961537434ed16b110e1187856d6fd83887488126e6f36627beff091b1eb72.exe	cmd.exe
PID 832 wrote to memory of 1152	832	03b961537434ed16b110e1187856d6fd83887488126e6f36627beff091b1eb72.exe	cmd.exe
PID 832 wrote to memory of 1152	832	03b961537434ed16b110e1187856d6fd83887488126e6f36627beff091b1eb72.exe	cmd.exe
PID 832 wrote to memory of 1152	832	03b961537434ed16b110e1187856d6fd83887488126e6f36627beff091b1eb72.exe	cmd.exe
PID 832 wrote to memory of 1152	832	03b961537434ed16b110e1187856d6fd83887488126e6f36627beff091b1eb72.exe	cmd.exe
PID 832 wrote to memory of 268	832	03b961537434ed16b110e1187856d6fd83887488126e6f36627beff091b1eb72.exe	sc.exe
PID 832 wrote to memory of 268	832	03b961537434ed16b110e1187856d6fd83887488126e6f36627beff091b1eb72.exe	sc.exe
PID 832 wrote to memory of 268	832	03b961537434ed16b110e1187856d6fd83887488126e6f36627beff091b1eb72.exe	sc.exe
PID 832 wrote to memory of 268	832	03b961537434ed16b110e1187856d6fd83887488126e6f36627beff091b1eb72.exe	sc.exe
PID 832 wrote to memory of 1432	832	03b961537434ed16b110e1187856d6fd83887488126e6f36627beff091b1eb72.exe	sc.exe
PID 832 wrote to memory of 1432	832	03b961537434ed16b110e1187856d6fd83887488126e6f36627beff091b1eb72.exe	sc.exe
PID 832 wrote to memory of 1432	832	03b961537434ed16b110e1187856d6fd83887488126e6f36627beff091b1eb72.exe	sc.exe
PID 832 wrote to memory of 1432	832	03b961537434ed16b110e1187856d6fd83887488126e6f36627beff091b1eb72.exe	sc.exe
PID 832 wrote to memory of 556	832	03b961537434ed16b110e1187856d6fd83887488126e6f36627beff091b1eb72.exe	sc.exe
PID 832 wrote to memory of 556	832	03b961537434ed16b110e1187856d6fd83887488126e6f36627beff091b1eb72.exe	sc.exe
PID 832 wrote to memory of 556	832	03b961537434ed16b110e1187856d6fd83887488126e6f36627beff091b1eb72.exe	sc.exe
PID 832 wrote to memory of 556	832	03b961537434ed16b110e1187856d6fd83887488126e6f36627beff091b1eb72.exe	sc.exe
PID 832 wrote to memory of 1128	832	03b961537434ed16b110e1187856d6fd83887488126e6f36627beff091b1eb72.exe	netsh.exe
PID 832 wrote to memory of 1128	832	03b961537434ed16b110e1187856d6fd83887488126e6f36627beff091b1eb72.exe	netsh.exe
PID 832 wrote to memory of 1128	832	03b961537434ed16b110e1187856d6fd83887488126e6f36627beff091b1eb72.exe	netsh.exe
PID 832 wrote to memory of 1128	832	03b961537434ed16b110e1187856d6fd83887488126e6f36627beff091b1eb72.exe	netsh.exe
PID 1884 wrote to memory of 924	1884	jgabygwd.exe	svchost.exe
PID 1884 wrote to memory of 924	1884	jgabygwd.exe	svchost.exe
PID 1884 wrote to memory of 924	1884	jgabygwd.exe	svchost.exe
PID 1884 wrote to memory of 924	1884	jgabygwd.exe	svchost.exe
PID 1884 wrote to memory of 924	1884	jgabygwd.exe	svchost.exe
PID 1884 wrote to memory of 924	1884	jgabygwd.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\03b961537434ed16b110e1187856d6fd83887488126e6f36627beff091b1eb72.exe
"C:\Users\Admin\AppData\Local\Temp\03b961537434ed16b110e1187856d6fd83887488126e6f36627beff091b1eb72.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:832

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\wqflwdtm\
2⤵
PID:2024

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\jgabygwd.exe" C:\Windows\SysWOW64\wqflwdtm\
2⤵
PID:1152

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create wqflwdtm binPath= "C:\Windows\SysWOW64\wqflwdtm\jgabygwd.exe /d\"C:\Users\Admin\AppData\Local\Temp\03b961537434ed16b110e1187856d6fd83887488126e6f36627beff091b1eb72.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:268

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description wqflwdtm "wifi internet conection"
2⤵
- Launches sc.exe
PID:1432

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start wqflwdtm
2⤵
- Launches sc.exe
PID:556

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:1128

C:\Windows\SysWOW64\wqflwdtm\jgabygwd.exe
C:\Windows\SysWOW64\wqflwdtm\jgabygwd.exe /d"C:\Users\Admin\AppData\Local\Temp\03b961537434ed16b110e1187856d6fd83887488126e6f36627beff091b1eb72.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1884

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Windows security bypass
- Sets service image path in registry
- Deletes itself
- Drops file in System32 directory
- Modifies data under HKEY_USERS
PID:924

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\jgabygwd.exe
Filesize
11.2MB

MD5
2061c2703c853420202c17bd1fea3221

SHA1
4a356cca9e8c96346a21be9b396ed2d4103cb1e7

SHA256
ea0b88bede8caa66a79c0e5baffe84501b3239e17f9a076f4f3b631ea7ae8a73

SHA512
42e5495363c7a03d63f104928e1cc6e8433c42ff68b6339160731010543f3f595afcad2cb8f0eed034a5ad57d879f1d5284c5a28685c99600da8cffec9d7add4

Download Submit
C:\Windows\SysWOW64\wqflwdtm\jgabygwd.exe
Filesize
11.2MB

MD5
2061c2703c853420202c17bd1fea3221

SHA1
4a356cca9e8c96346a21be9b396ed2d4103cb1e7

SHA256
ea0b88bede8caa66a79c0e5baffe84501b3239e17f9a076f4f3b631ea7ae8a73

SHA512
42e5495363c7a03d63f104928e1cc6e8433c42ff68b6339160731010543f3f595afcad2cb8f0eed034a5ad57d879f1d5284c5a28685c99600da8cffec9d7add4

Download Submit
memory/832-56-0x0000000000230000-0x0000000000243000-memory.dmp

Filesize
76KB

Download
memory/832-60-0x0000000000400000-0x00000000004C7000-memory.dmp

Filesize
796KB

Download
memory/924-63-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/924-62-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/924-61-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/924-68-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/924-69-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/924-70-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/1884-67-0x0000000000400000-0x00000000004C7000-memory.dmp

Filesize
796KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads