tofsee | ddeaca50e21813ebb8ee743cca315e0f1d7a05900d4369b652f68f5baeaa6f38

General

Target

file.exe
Size

167KB
MD5

068af12a4fde5998014522a0e8eaeb06
SHA1

e51abb1d6ef5a889b398a670c60f20cec46f7f95
SHA256

ddeaca50e21813ebb8ee743cca315e0f1d7a05900d4369b652f68f5baeaa6f38
SHA512

9b931733b2b6a478d639aa5cca89e36fe37d3a225277e985ae845a8362bd14186e59f879435ecd3a975010df752c9e8e9c8cedf62a760c87246383e22bdad71c
SSDEEP

3072:zBl9IavvucboHS5J1VQErTHNXrDDJkbV5vw:h/HLboi/QEPVDlkB

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
Creates new service(s) 1 TTPs
persistence

New Service
T1050
Executes dropped EXE 1 IoCs

Processes:

ngdlcvpm.exe

pid process

4464 ngdlcvpm.exe
Modifies Windows Firewall 1 TTPs 1 IoCs
evasion

Modify Existing Service
T1031

Processes:

netsh.exe

pid process

3424 netsh.exe

pid	process
4464	ngdlcvpm.exe

pid	process
3424	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\ppvtmumf\ImagePath = "C:\\Windows\\SysWOW64\\ppvtmumf\\ngdlcvpm.exe"	svchost.exe

Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.

Query Registry
T1012

System Information Discovery
T1082

Processes:

file.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation file.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:

ngdlcvpm.exe

description pid process target process

PID 4464 set thread context of 784 4464 ngdlcvpm.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

1012 sc.exe
2304 sc.exe
2316 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Program crash 2 IoCs

Processes:

WerFault.exeWerFault.exe

pid pid_target process target process

3940 4244 WerFault.exe file.exe
4352 4464 WerFault.exe ngdlcvpm.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation	file.exe

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

description	pid	process	target process
PID 4464 set thread context of 784	4464	ngdlcvpm.exe	svchost.exe

pid	process
1012	sc.exe
2304	sc.exe
2316	sc.exe

pid	pid_target	process	target process
3940	4244	WerFault.exe	file.exe
4352	4464	WerFault.exe	ngdlcvpm.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 23 IoCs

Processes:

file.exengdlcvpm.exe

description	pid	process	target process
PID 4244 wrote to memory of 4796	4244	file.exe	cmd.exe
PID 4244 wrote to memory of 4796	4244	file.exe	cmd.exe
PID 4244 wrote to memory of 4796	4244	file.exe	cmd.exe
PID 4244 wrote to memory of 4760	4244	file.exe	cmd.exe
PID 4244 wrote to memory of 4760	4244	file.exe	cmd.exe
PID 4244 wrote to memory of 4760	4244	file.exe	cmd.exe
PID 4244 wrote to memory of 1012	4244	file.exe	sc.exe
PID 4244 wrote to memory of 1012	4244	file.exe	sc.exe
PID 4244 wrote to memory of 1012	4244	file.exe	sc.exe
PID 4244 wrote to memory of 2304	4244	file.exe	sc.exe
PID 4244 wrote to memory of 2304	4244	file.exe	sc.exe
PID 4244 wrote to memory of 2304	4244	file.exe	sc.exe
PID 4244 wrote to memory of 2316	4244	file.exe	sc.exe
PID 4244 wrote to memory of 2316	4244	file.exe	sc.exe
PID 4244 wrote to memory of 2316	4244	file.exe	sc.exe
PID 4244 wrote to memory of 3424	4244	file.exe	netsh.exe
PID 4244 wrote to memory of 3424	4244	file.exe	netsh.exe
PID 4244 wrote to memory of 3424	4244	file.exe	netsh.exe
PID 4464 wrote to memory of 784	4464	ngdlcvpm.exe	svchost.exe
PID 4464 wrote to memory of 784	4464	ngdlcvpm.exe	svchost.exe
PID 4464 wrote to memory of 784	4464	ngdlcvpm.exe	svchost.exe
PID 4464 wrote to memory of 784	4464	ngdlcvpm.exe	svchost.exe
PID 4464 wrote to memory of 784	4464	ngdlcvpm.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4244

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ppvtmumf\
2⤵
PID:4796

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ngdlcvpm.exe" C:\Windows\SysWOW64\ppvtmumf\
2⤵
PID:4760

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create ppvtmumf binPath= "C:\Windows\SysWOW64\ppvtmumf\ngdlcvpm.exe /d\"C:\Users\Admin\AppData\Local\Temp\file.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:1012

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description ppvtmumf "wifi internet conection"
2⤵
- Launches sc.exe
PID:2304

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start ppvtmumf
2⤵
- Launches sc.exe
PID:2316

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:3424

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 4244 -s 1040
2⤵
- Program crash
PID:3940

C:\Windows\SysWOW64\ppvtmumf\ngdlcvpm.exe
C:\Windows\SysWOW64\ppvtmumf\ngdlcvpm.exe /d"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4464

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Sets service image path in registry
- Drops file in System32 directory
- Modifies data under HKEY_USERS
PID:784

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 4464 -s 508
2⤵
- Program crash
PID:4352

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 4244 -ip 4244
1⤵
PID:4296

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 4464 -ip 4464
1⤵
PID:2616

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

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\ngdlcvpm.exe
Filesize
11.8MB

MD5
84e69288fd9865e7a97aa13d50b3be22

SHA1
956210829f2e2698ee71ddc3875aaab3786321a0

SHA256
1442de796a0c59de03ba19314c5d765b70b9867b3e91c36317e6357e6ac15e8b

SHA512
0bc86e171b6cf93a82ae6eef3d6b49e41e0577499c72c44c2f3075849e11f74089ea1a07e0d647cb392b9b641d7eb954624cb9b03b5098958ac76a3541832c95

Download Submit
C:\Windows\SysWOW64\ppvtmumf\ngdlcvpm.exe
Filesize
11.8MB

MD5
84e69288fd9865e7a97aa13d50b3be22

SHA1
956210829f2e2698ee71ddc3875aaab3786321a0

SHA256
1442de796a0c59de03ba19314c5d765b70b9867b3e91c36317e6357e6ac15e8b

SHA512
0bc86e171b6cf93a82ae6eef3d6b49e41e0577499c72c44c2f3075849e11f74089ea1a07e0d647cb392b9b641d7eb954624cb9b03b5098958ac76a3541832c95

Download Submit
memory/784-152-0x0000000000510000-0x0000000000525000-memory.dmp

Filesize
84KB

Download
memory/784-151-0x0000000000510000-0x0000000000525000-memory.dmp

Filesize
84KB

Download
memory/784-146-0x0000000000510000-0x0000000000525000-memory.dmp

Filesize
84KB

Download
memory/784-145-0x0000000000000000-mapping.dmp

Download
memory/1012-138-0x0000000000000000-mapping.dmp

Download
memory/2304-139-0x0000000000000000-mapping.dmp

Download
memory/2316-140-0x0000000000000000-mapping.dmp

Download
memory/3424-142-0x0000000000000000-mapping.dmp

Download
memory/4244-144-0x0000000000400000-0x000000000070B000-memory.dmp

Filesize
3.0MB

Download
memory/4244-143-0x00000000008A0000-0x00000000008B3000-memory.dmp

Filesize
76KB

Download
memory/4244-132-0x000000000093D000-0x000000000094D000-memory.dmp

Filesize
64KB

Download
memory/4244-134-0x0000000000400000-0x000000000070B000-memory.dmp

Filesize
3.0MB

Download
memory/4244-133-0x00000000008A0000-0x00000000008B3000-memory.dmp

Filesize
76KB

Download
memory/4464-149-0x00000000007A8000-0x00000000007B9000-memory.dmp

Filesize
68KB

Download
memory/4464-150-0x0000000000400000-0x000000000070B000-memory.dmp

Filesize
3.0MB

Download
memory/4760-136-0x0000000000000000-mapping.dmp

Download
memory/4796-135-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads