tofsee | b3486e0d693e668eec18773a3da49ad26de5fbae3b5993b26726262f0687a190

General

Target

b3486e0d693e668eec18773a3da49ad26de5fbae3b5993b26726262f0687a190.exe
Size

97KB
MD5

d728588592929f9bf15f3751b2021b5c
SHA1

03165adb99b7471a7e8e271d8ae1aec391a7ed14
SHA256

b3486e0d693e668eec18773a3da49ad26de5fbae3b5993b26726262f0687a190
SHA512

75f723bab92604734235007e73950cb2e20374f00439eb155210e2ac5da4c2e09b936e7d3e54c3fd18bfea5f9b35a7e56c565be184f70bcfa3b38129f0e5b637

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\bbjrfngz = "0"	svchost.exe

Creates new service(s) 1 TTPs
persistence

New Service
T1050
Executes dropped EXE 1 IoCs

Processes:

bsloviut.exe

pid process

788 bsloviut.exe
Modifies Windows Firewall 1 TTPs 1 IoCs
evasion

Modify Existing Service
T1031

Processes:

netsh.exe

pid process

1740 netsh.exe

pid	process
788	bsloviut.exe

pid	process
1740	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\bbjrfngz\ImagePath = "C:\\Windows\\SysWOW64\\bbjrfngz\\bsloviut.exe"	svchost.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

1800 svchost.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

bsloviut.exe

description pid process target process

PID 788 set thread context of 1800 788 bsloviut.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

1264 sc.exe
1436 sc.exe
1700 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
1800	svchost.exe

description	pid	process	target process
PID 788 set thread context of 1800	788	bsloviut.exe	svchost.exe

pid	process
1264	sc.exe
1436	sc.exe
1700	sc.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

b3486e0d693e668eec18773a3da49ad26de5fbae3b5993b26726262f0687a190.exebsloviut.exe

description	pid	process	target process
PID 1144 wrote to memory of 1104	1144	b3486e0d693e668eec18773a3da49ad26de5fbae3b5993b26726262f0687a190.exe	cmd.exe
PID 1144 wrote to memory of 1104	1144	b3486e0d693e668eec18773a3da49ad26de5fbae3b5993b26726262f0687a190.exe	cmd.exe
PID 1144 wrote to memory of 1104	1144	b3486e0d693e668eec18773a3da49ad26de5fbae3b5993b26726262f0687a190.exe	cmd.exe
PID 1144 wrote to memory of 1104	1144	b3486e0d693e668eec18773a3da49ad26de5fbae3b5993b26726262f0687a190.exe	cmd.exe
PID 1144 wrote to memory of 1592	1144	b3486e0d693e668eec18773a3da49ad26de5fbae3b5993b26726262f0687a190.exe	cmd.exe
PID 1144 wrote to memory of 1592	1144	b3486e0d693e668eec18773a3da49ad26de5fbae3b5993b26726262f0687a190.exe	cmd.exe
PID 1144 wrote to memory of 1592	1144	b3486e0d693e668eec18773a3da49ad26de5fbae3b5993b26726262f0687a190.exe	cmd.exe
PID 1144 wrote to memory of 1592	1144	b3486e0d693e668eec18773a3da49ad26de5fbae3b5993b26726262f0687a190.exe	cmd.exe
PID 1144 wrote to memory of 1264	1144	b3486e0d693e668eec18773a3da49ad26de5fbae3b5993b26726262f0687a190.exe	sc.exe
PID 1144 wrote to memory of 1264	1144	b3486e0d693e668eec18773a3da49ad26de5fbae3b5993b26726262f0687a190.exe	sc.exe
PID 1144 wrote to memory of 1264	1144	b3486e0d693e668eec18773a3da49ad26de5fbae3b5993b26726262f0687a190.exe	sc.exe
PID 1144 wrote to memory of 1264	1144	b3486e0d693e668eec18773a3da49ad26de5fbae3b5993b26726262f0687a190.exe	sc.exe
PID 1144 wrote to memory of 1436	1144	b3486e0d693e668eec18773a3da49ad26de5fbae3b5993b26726262f0687a190.exe	sc.exe
PID 1144 wrote to memory of 1436	1144	b3486e0d693e668eec18773a3da49ad26de5fbae3b5993b26726262f0687a190.exe	sc.exe
PID 1144 wrote to memory of 1436	1144	b3486e0d693e668eec18773a3da49ad26de5fbae3b5993b26726262f0687a190.exe	sc.exe
PID 1144 wrote to memory of 1436	1144	b3486e0d693e668eec18773a3da49ad26de5fbae3b5993b26726262f0687a190.exe	sc.exe
PID 1144 wrote to memory of 1700	1144	b3486e0d693e668eec18773a3da49ad26de5fbae3b5993b26726262f0687a190.exe	sc.exe
PID 1144 wrote to memory of 1700	1144	b3486e0d693e668eec18773a3da49ad26de5fbae3b5993b26726262f0687a190.exe	sc.exe
PID 1144 wrote to memory of 1700	1144	b3486e0d693e668eec18773a3da49ad26de5fbae3b5993b26726262f0687a190.exe	sc.exe
PID 1144 wrote to memory of 1700	1144	b3486e0d693e668eec18773a3da49ad26de5fbae3b5993b26726262f0687a190.exe	sc.exe
PID 1144 wrote to memory of 1740	1144	b3486e0d693e668eec18773a3da49ad26de5fbae3b5993b26726262f0687a190.exe	netsh.exe
PID 1144 wrote to memory of 1740	1144	b3486e0d693e668eec18773a3da49ad26de5fbae3b5993b26726262f0687a190.exe	netsh.exe
PID 1144 wrote to memory of 1740	1144	b3486e0d693e668eec18773a3da49ad26de5fbae3b5993b26726262f0687a190.exe	netsh.exe
PID 1144 wrote to memory of 1740	1144	b3486e0d693e668eec18773a3da49ad26de5fbae3b5993b26726262f0687a190.exe	netsh.exe
PID 788 wrote to memory of 1800	788	bsloviut.exe	svchost.exe
PID 788 wrote to memory of 1800	788	bsloviut.exe	svchost.exe
PID 788 wrote to memory of 1800	788	bsloviut.exe	svchost.exe
PID 788 wrote to memory of 1800	788	bsloviut.exe	svchost.exe
PID 788 wrote to memory of 1800	788	bsloviut.exe	svchost.exe
PID 788 wrote to memory of 1800	788	bsloviut.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\b3486e0d693e668eec18773a3da49ad26de5fbae3b5993b26726262f0687a190.exe
"C:\Users\Admin\AppData\Local\Temp\b3486e0d693e668eec18773a3da49ad26de5fbae3b5993b26726262f0687a190.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1144

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\bbjrfngz\
2⤵
PID:1104

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\bsloviut.exe" C:\Windows\SysWOW64\bbjrfngz\
2⤵
PID:1592

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create bbjrfngz binPath= "C:\Windows\SysWOW64\bbjrfngz\bsloviut.exe /d\"C:\Users\Admin\AppData\Local\Temp\b3486e0d693e668eec18773a3da49ad26de5fbae3b5993b26726262f0687a190.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:1264

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description bbjrfngz "wifi internet conection"
2⤵
- Launches sc.exe
PID:1436

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start bbjrfngz
2⤵
- Launches sc.exe
PID:1700

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:1740

C:\Windows\SysWOW64\bbjrfngz\bsloviut.exe
C:\Windows\SysWOW64\bbjrfngz\bsloviut.exe /d"C:\Users\Admin\AppData\Local\Temp\b3486e0d693e668eec18773a3da49ad26de5fbae3b5993b26726262f0687a190.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:788

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Windows security bypass
- Sets service image path in registry
- Deletes itself
PID:1800

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\bsloviut.exe
Filesize
10.8MB

MD5
73590ccb0a67c3978d492930ef59ed93

SHA1
e936002d6b8ef42e0747761a0305538d3cb246f2

SHA256
ffe4416ec6a664a75b6f9721d2a072ebde1657322c75d82b4d20bafcb543c831

SHA512
7912a60e3a151b96b19f2693e5d4b650831caee677b1b002d153afeddcc7e70435d094e44a41d34b80788b6da7962dac91b0816fe5143738df42dc7632d112e7

Download Submit
C:\Windows\SysWOW64\bbjrfngz\bsloviut.exe
Filesize
10.8MB

MD5
73590ccb0a67c3978d492930ef59ed93

SHA1
e936002d6b8ef42e0747761a0305538d3cb246f2

SHA256
ffe4416ec6a664a75b6f9721d2a072ebde1657322c75d82b4d20bafcb543c831

SHA512
7912a60e3a151b96b19f2693e5d4b650831caee677b1b002d153afeddcc7e70435d094e44a41d34b80788b6da7962dac91b0816fe5143738df42dc7632d112e7

Download Submit
memory/788-67-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/788-74-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/1104-56-0x0000000000000000-mapping.dmp

Download
memory/1144-54-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/1144-57-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/1144-55-0x0000000075501000-0x0000000075503000-memory.dmp

Filesize
8KB

Download
memory/1144-64-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/1264-60-0x0000000000000000-mapping.dmp

Download
memory/1436-61-0x0000000000000000-mapping.dmp

Download
memory/1592-58-0x0000000000000000-mapping.dmp

Download
memory/1700-62-0x0000000000000000-mapping.dmp

Download
memory/1740-63-0x0000000000000000-mapping.dmp

Download
memory/1800-71-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1800-72-0x0000000000089A6B-mapping.dmp

Download
memory/1800-69-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1800-77-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1800-78-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads