tofsee | 514e2b4d0bdd3e933197edebb76699bf006f4b4f410e7adc491d73738c71151f

General

Target

514e2b4d0bdd3e933197edebb76699bf006f4b4f410e7adc491d73738c71151f.exe
Size

276KB
MD5

04c62424433988aed6944dc558855824
SHA1

cb6c87d5dc521549084a92e26330340f56086f24
SHA256

514e2b4d0bdd3e933197edebb76699bf006f4b4f410e7adc491d73738c71151f
SHA512

c69cbbaa911f951b984927a9d772f043b47f157e512ffdc19d585de49af99a8a5b56944e1b34ad92906c297176909c86c9baf8a34057fe11669dcb2c344cebff
SSDEEP

3072:qJq486qfLrfPDC1tq5q6rxBWRmk821kjOzSGyCAIMuJcbP2BcWtV0ofAfpBtShIJ:R1fLbDC1nUFBOz7cgvVSpKuRjMgU

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:

rgurkqmp.exe

pid process

4412 rgurkqmp.exe
Modifies Windows Firewall 1 TTPs 1 IoCs
evasion

Modify Existing Service
T1031

Processes:

netsh.exe

pid process

4592 netsh.exe

pid	process
4412	rgurkqmp.exe

pid	process
4592	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\kvwbavwa\ImagePath = "C:\\Windows\\SysWOW64\\kvwbavwa\\rgurkqmp.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:

514e2b4d0bdd3e933197edebb76699bf006f4b4f410e7adc491d73738c71151f.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	514e2b4d0bdd3e933197edebb76699bf006f4b4f410e7adc491d73738c71151f.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

rgurkqmp.exe

description pid process target process

PID 4412 set thread context of 4028 4412 rgurkqmp.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

4184 sc.exe
548 sc.exe
4192 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

description	pid	process	target process
PID 4412 set thread context of 4028	4412	rgurkqmp.exe	svchost.exe

pid	process
4184	sc.exe
548	sc.exe
4192	sc.exe

Program crash 2 IoCs

Processes:

WerFault.exeWerFault.exe

pid	pid_target	process	target process
3024	4696	WerFault.exe	514e2b4d0bdd3e933197edebb76699bf006f4b4f410e7adc491d73738c71151f.exe
1620	4412	WerFault.exe	rgurkqmp.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

514e2b4d0bdd3e933197edebb76699bf006f4b4f410e7adc491d73738c71151f.exergurkqmp.exe

description	pid	process	target process
PID 4696 wrote to memory of 5096	4696	514e2b4d0bdd3e933197edebb76699bf006f4b4f410e7adc491d73738c71151f.exe	cmd.exe
PID 4696 wrote to memory of 5096	4696	514e2b4d0bdd3e933197edebb76699bf006f4b4f410e7adc491d73738c71151f.exe	cmd.exe
PID 4696 wrote to memory of 5096	4696	514e2b4d0bdd3e933197edebb76699bf006f4b4f410e7adc491d73738c71151f.exe	cmd.exe
PID 4696 wrote to memory of 2032	4696	514e2b4d0bdd3e933197edebb76699bf006f4b4f410e7adc491d73738c71151f.exe	cmd.exe
PID 4696 wrote to memory of 2032	4696	514e2b4d0bdd3e933197edebb76699bf006f4b4f410e7adc491d73738c71151f.exe	cmd.exe
PID 4696 wrote to memory of 2032	4696	514e2b4d0bdd3e933197edebb76699bf006f4b4f410e7adc491d73738c71151f.exe	cmd.exe
PID 4696 wrote to memory of 4192	4696	514e2b4d0bdd3e933197edebb76699bf006f4b4f410e7adc491d73738c71151f.exe	sc.exe
PID 4696 wrote to memory of 4192	4696	514e2b4d0bdd3e933197edebb76699bf006f4b4f410e7adc491d73738c71151f.exe	sc.exe
PID 4696 wrote to memory of 4192	4696	514e2b4d0bdd3e933197edebb76699bf006f4b4f410e7adc491d73738c71151f.exe	sc.exe
PID 4696 wrote to memory of 4184	4696	514e2b4d0bdd3e933197edebb76699bf006f4b4f410e7adc491d73738c71151f.exe	sc.exe
PID 4696 wrote to memory of 4184	4696	514e2b4d0bdd3e933197edebb76699bf006f4b4f410e7adc491d73738c71151f.exe	sc.exe
PID 4696 wrote to memory of 4184	4696	514e2b4d0bdd3e933197edebb76699bf006f4b4f410e7adc491d73738c71151f.exe	sc.exe
PID 4696 wrote to memory of 548	4696	514e2b4d0bdd3e933197edebb76699bf006f4b4f410e7adc491d73738c71151f.exe	sc.exe
PID 4696 wrote to memory of 548	4696	514e2b4d0bdd3e933197edebb76699bf006f4b4f410e7adc491d73738c71151f.exe	sc.exe
PID 4696 wrote to memory of 548	4696	514e2b4d0bdd3e933197edebb76699bf006f4b4f410e7adc491d73738c71151f.exe	sc.exe
PID 4696 wrote to memory of 4592	4696	514e2b4d0bdd3e933197edebb76699bf006f4b4f410e7adc491d73738c71151f.exe	netsh.exe
PID 4696 wrote to memory of 4592	4696	514e2b4d0bdd3e933197edebb76699bf006f4b4f410e7adc491d73738c71151f.exe	netsh.exe
PID 4696 wrote to memory of 4592	4696	514e2b4d0bdd3e933197edebb76699bf006f4b4f410e7adc491d73738c71151f.exe	netsh.exe
PID 4412 wrote to memory of 4028	4412	rgurkqmp.exe	svchost.exe
PID 4412 wrote to memory of 4028	4412	rgurkqmp.exe	svchost.exe
PID 4412 wrote to memory of 4028	4412	rgurkqmp.exe	svchost.exe
PID 4412 wrote to memory of 4028	4412	rgurkqmp.exe	svchost.exe
PID 4412 wrote to memory of 4028	4412	rgurkqmp.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\514e2b4d0bdd3e933197edebb76699bf006f4b4f410e7adc491d73738c71151f.exe
"C:\Users\Admin\AppData\Local\Temp\514e2b4d0bdd3e933197edebb76699bf006f4b4f410e7adc491d73738c71151f.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4696

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\kvwbavwa\
2⤵
PID:5096

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\rgurkqmp.exe" C:\Windows\SysWOW64\kvwbavwa\
2⤵
PID:2032

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create kvwbavwa binPath= "C:\Windows\SysWOW64\kvwbavwa\rgurkqmp.exe /d\"C:\Users\Admin\AppData\Local\Temp\514e2b4d0bdd3e933197edebb76699bf006f4b4f410e7adc491d73738c71151f.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:4192

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description kvwbavwa "wifi internet conection"
2⤵
- Launches sc.exe
PID:4184

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start kvwbavwa
2⤵
- Launches sc.exe
PID:548

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:4592

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 4696 -s 664
2⤵
- Program crash
PID:3024

C:\Windows\SysWOW64\kvwbavwa\rgurkqmp.exe
C:\Windows\SysWOW64\kvwbavwa\rgurkqmp.exe /d"C:\Users\Admin\AppData\Local\Temp\514e2b4d0bdd3e933197edebb76699bf006f4b4f410e7adc491d73738c71151f.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4412

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Sets service image path in registry
PID:4028

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 4412 -s 512
2⤵
- Program crash
PID:1620

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 468 -p 4696 -ip 4696
1⤵
PID:2424

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 464 -p 4412 -ip 4412
1⤵
PID:3932

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\rgurkqmp.exe
Filesize
10.6MB

MD5
73ea32fe04c9ee1782f43cab8f15a4e3

SHA1
9038e68a5086c13e8ca6e3418a1798d17629b157

SHA256
ed88e7f37776916c03f135c8ac6961869d75f0b8d9e2ec0d7418c82093731105

SHA512
0a80fa471bad640f0fd5bb96e19b47cb245678abeef16807ec022ead63019c73a27b9ae56d99f34bde9a3c2d7983aa8404cdd80fcc4bdb156180964dc26d8b61

Download Submit
C:\Windows\SysWOW64\kvwbavwa\rgurkqmp.exe
Filesize
10.6MB

MD5
73ea32fe04c9ee1782f43cab8f15a4e3

SHA1
9038e68a5086c13e8ca6e3418a1798d17629b157

SHA256
ed88e7f37776916c03f135c8ac6961869d75f0b8d9e2ec0d7418c82093731105

SHA512
0a80fa471bad640f0fd5bb96e19b47cb245678abeef16807ec022ead63019c73a27b9ae56d99f34bde9a3c2d7983aa8404cdd80fcc4bdb156180964dc26d8b61

Download Submit
memory/548-140-0x0000000000000000-mapping.dmp

Download
memory/2032-136-0x0000000000000000-mapping.dmp

Download
memory/4028-144-0x0000000000000000-mapping.dmp

Download
memory/4028-151-0x0000000000E20000-0x0000000000E35000-memory.dmp

Filesize
84KB

Download
memory/4028-150-0x0000000000E20000-0x0000000000E35000-memory.dmp

Filesize
84KB

Download
memory/4028-145-0x0000000000E20000-0x0000000000E35000-memory.dmp

Filesize
84KB

Download
memory/4184-139-0x0000000000000000-mapping.dmp

Download
memory/4192-138-0x0000000000000000-mapping.dmp

Download
memory/4412-148-0x0000000000802000-0x0000000000817000-memory.dmp

Filesize
84KB

Download
memory/4412-149-0x0000000000400000-0x000000000044A000-memory.dmp

Filesize
296KB

Download
memory/4592-142-0x0000000000000000-mapping.dmp

Download
memory/4696-133-0x0000000000490000-0x00000000004A3000-memory.dmp

Filesize
76KB

Download
memory/4696-143-0x0000000000400000-0x000000000044A000-memory.dmp

Filesize
296KB

Download
memory/4696-134-0x0000000000400000-0x000000000044A000-memory.dmp

Filesize
296KB

Download
memory/4696-132-0x00000000004D7000-0x00000000004EC000-memory.dmp

Filesize
84KB

Download
memory/5096-135-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads