tofsee | 60e07537db60ab75980d74059ff3967dfd3394b5b7a2a71cf1e22fbdd8e90532

General

Target

60e07537db60ab75980d74059ff3967dfd3394b5b7a2a71cf1e22fbdd8e90532.exe
Size

98KB
MD5

9ad29d46cf10bae1cb938e5bcdf87ac4
SHA1

7db1ddffd9bf441769c4125b484b3a5703053bc8
SHA256

60e07537db60ab75980d74059ff3967dfd3394b5b7a2a71cf1e22fbdd8e90532
SHA512

f8e202ccf7d159f83040e1dba530c853dcfaa431a1999e520e172faf7a6e248b4aa3d282fb335962578668850f3325785cc6835c98e7b116cfbba78bfc7ebc8d

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
Creates new service(s) 1 TTPs
persistence

New Service
T1050
Executes dropped EXE 1 IoCs

Processes:

wfxwfrvm.exe

pid process

4560 wfxwfrvm.exe
Modifies Windows Firewall 1 TTPs 1 IoCs
evasion

Modify Existing Service
T1031

Processes:

netsh.exe

pid process

4340 netsh.exe

pid	process
4560	wfxwfrvm.exe

pid	process
4340	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\nlayewsk\ImagePath = "C:\\Windows\\SysWOW64\\nlayewsk\\wfxwfrvm.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:

60e07537db60ab75980d74059ff3967dfd3394b5b7a2a71cf1e22fbdd8e90532.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Control Panel\International\Geo\Nation	60e07537db60ab75980d74059ff3967dfd3394b5b7a2a71cf1e22fbdd8e90532.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

wfxwfrvm.exe

description pid process target process

PID 4560 set thread context of 3648 4560 wfxwfrvm.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

912 sc.exe
4660 sc.exe
2728 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 4560 set thread context of 3648	4560	wfxwfrvm.exe	svchost.exe

pid	process
912	sc.exe
4660	sc.exe
2728	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

60e07537db60ab75980d74059ff3967dfd3394b5b7a2a71cf1e22fbdd8e90532.exewfxwfrvm.exe

description	pid	process	target process
PID 884 wrote to memory of 2656	884	60e07537db60ab75980d74059ff3967dfd3394b5b7a2a71cf1e22fbdd8e90532.exe	cmd.exe
PID 884 wrote to memory of 2656	884	60e07537db60ab75980d74059ff3967dfd3394b5b7a2a71cf1e22fbdd8e90532.exe	cmd.exe
PID 884 wrote to memory of 2656	884	60e07537db60ab75980d74059ff3967dfd3394b5b7a2a71cf1e22fbdd8e90532.exe	cmd.exe
PID 884 wrote to memory of 3260	884	60e07537db60ab75980d74059ff3967dfd3394b5b7a2a71cf1e22fbdd8e90532.exe	cmd.exe
PID 884 wrote to memory of 3260	884	60e07537db60ab75980d74059ff3967dfd3394b5b7a2a71cf1e22fbdd8e90532.exe	cmd.exe
PID 884 wrote to memory of 3260	884	60e07537db60ab75980d74059ff3967dfd3394b5b7a2a71cf1e22fbdd8e90532.exe	cmd.exe
PID 884 wrote to memory of 912	884	60e07537db60ab75980d74059ff3967dfd3394b5b7a2a71cf1e22fbdd8e90532.exe	sc.exe
PID 884 wrote to memory of 912	884	60e07537db60ab75980d74059ff3967dfd3394b5b7a2a71cf1e22fbdd8e90532.exe	sc.exe
PID 884 wrote to memory of 912	884	60e07537db60ab75980d74059ff3967dfd3394b5b7a2a71cf1e22fbdd8e90532.exe	sc.exe
PID 884 wrote to memory of 4660	884	60e07537db60ab75980d74059ff3967dfd3394b5b7a2a71cf1e22fbdd8e90532.exe	sc.exe
PID 884 wrote to memory of 4660	884	60e07537db60ab75980d74059ff3967dfd3394b5b7a2a71cf1e22fbdd8e90532.exe	sc.exe
PID 884 wrote to memory of 4660	884	60e07537db60ab75980d74059ff3967dfd3394b5b7a2a71cf1e22fbdd8e90532.exe	sc.exe
PID 884 wrote to memory of 2728	884	60e07537db60ab75980d74059ff3967dfd3394b5b7a2a71cf1e22fbdd8e90532.exe	sc.exe
PID 884 wrote to memory of 2728	884	60e07537db60ab75980d74059ff3967dfd3394b5b7a2a71cf1e22fbdd8e90532.exe	sc.exe
PID 884 wrote to memory of 2728	884	60e07537db60ab75980d74059ff3967dfd3394b5b7a2a71cf1e22fbdd8e90532.exe	sc.exe
PID 884 wrote to memory of 4340	884	60e07537db60ab75980d74059ff3967dfd3394b5b7a2a71cf1e22fbdd8e90532.exe	netsh.exe
PID 884 wrote to memory of 4340	884	60e07537db60ab75980d74059ff3967dfd3394b5b7a2a71cf1e22fbdd8e90532.exe	netsh.exe
PID 884 wrote to memory of 4340	884	60e07537db60ab75980d74059ff3967dfd3394b5b7a2a71cf1e22fbdd8e90532.exe	netsh.exe
PID 4560 wrote to memory of 3648	4560	wfxwfrvm.exe	svchost.exe
PID 4560 wrote to memory of 3648	4560	wfxwfrvm.exe	svchost.exe
PID 4560 wrote to memory of 3648	4560	wfxwfrvm.exe	svchost.exe
PID 4560 wrote to memory of 3648	4560	wfxwfrvm.exe	svchost.exe
PID 4560 wrote to memory of 3648	4560	wfxwfrvm.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\60e07537db60ab75980d74059ff3967dfd3394b5b7a2a71cf1e22fbdd8e90532.exe
"C:\Users\Admin\AppData\Local\Temp\60e07537db60ab75980d74059ff3967dfd3394b5b7a2a71cf1e22fbdd8e90532.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:884

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\nlayewsk\
2⤵
PID:2656

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\wfxwfrvm.exe" C:\Windows\SysWOW64\nlayewsk\
2⤵
PID:3260

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create nlayewsk binPath= "C:\Windows\SysWOW64\nlayewsk\wfxwfrvm.exe /d\"C:\Users\Admin\AppData\Local\Temp\60e07537db60ab75980d74059ff3967dfd3394b5b7a2a71cf1e22fbdd8e90532.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:912

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description nlayewsk "wifi internet conection"
2⤵
- Launches sc.exe
PID:4660

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start nlayewsk
2⤵
- Launches sc.exe
PID:2728

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:4340

C:\Windows\SysWOW64\nlayewsk\wfxwfrvm.exe
C:\Windows\SysWOW64\nlayewsk\wfxwfrvm.exe /d"C:\Users\Admin\AppData\Local\Temp\60e07537db60ab75980d74059ff3967dfd3394b5b7a2a71cf1e22fbdd8e90532.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4560

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Sets service image path in registry
PID:3648

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

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\wfxwfrvm.exe
Filesize
13.4MB

MD5
bb921302334cd1da428d89ec91f659c9

SHA1
f26c3d7a9719196aeef49661276bfe5138e8fe39

SHA256
12c74a6b032b097658f5aeb4ea8e4252c7716f883932630027129f44d9878a22

SHA512
cd5d231b83cd23c963bd64fe15adf32afef64e8e7943fee97a5e1626a206fb3cd781616591cb92af6edcff553c4340d1970e71da572483e1c055288b1a2eb9c0

Download Submit
C:\Windows\SysWOW64\nlayewsk\wfxwfrvm.exe
Filesize
13.4MB

MD5
bb921302334cd1da428d89ec91f659c9

SHA1
f26c3d7a9719196aeef49661276bfe5138e8fe39

SHA256
12c74a6b032b097658f5aeb4ea8e4252c7716f883932630027129f44d9878a22

SHA512
cd5d231b83cd23c963bd64fe15adf32afef64e8e7943fee97a5e1626a206fb3cd781616591cb92af6edcff553c4340d1970e71da572483e1c055288b1a2eb9c0

Download Submit
memory/884-139-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download
memory/884-131-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download
memory/884-130-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download
memory/912-135-0x0000000000000000-mapping.dmp

Download
memory/2656-132-0x0000000000000000-mapping.dmp

Download
memory/2728-137-0x0000000000000000-mapping.dmp

Download
memory/3260-133-0x0000000000000000-mapping.dmp

Download
memory/3648-142-0x0000000000000000-mapping.dmp

Download
memory/3648-143-0x0000000000A00000-0x0000000000A15000-memory.dmp

Filesize
84KB

Download
memory/3648-147-0x0000000000A00000-0x0000000000A15000-memory.dmp

Filesize
84KB

Download
memory/3648-148-0x0000000000A00000-0x0000000000A15000-memory.dmp

Filesize
84KB

Download
memory/4340-138-0x0000000000000000-mapping.dmp

Download
memory/4560-141-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download
memory/4560-145-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download
memory/4660-136-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads