tofsee | 1b66f5287e70ab31b12e42bfad9d69ca94e4e8025cc4c3ece1d254be0bf787e9

General

Target

1b66f5287e70ab31b12e42bfad9d69ca94e4e8025cc4c3ece1d254be0bf787e9.exe
Size

139KB
MD5

fb7d171df11ed3ea9adb990ccf967208
SHA1

d3c44eceea18a017840136bb48d1c4147a41f83c
SHA256

1b66f5287e70ab31b12e42bfad9d69ca94e4e8025cc4c3ece1d254be0bf787e9
SHA512

bd28b24e596ff7438cad0836b256826842be84c14387ca970d78de984bafe0e58e9b57b883e9369629afcf797bcb88b968a7abb3f2b7b19d47b2f4790c23af55

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\lmbdjhnh = "0"	svchost.exe

Creates new service(s) 1 TTPs
persistence

New Service
T1050
Executes dropped EXE 1 IoCs

Processes:

vqqxtfvn.exe

pid process

1040 vqqxtfvn.exe
Modifies Windows Firewall 1 TTPs 1 IoCs
evasion

Modify Existing Service
T1031

Processes:

netsh.exe

pid process

468 netsh.exe

pid	process
1040	vqqxtfvn.exe

pid	process
468	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\lmbdjhnh\ImagePath = "C:\\Windows\\SysWOW64\\lmbdjhnh\\vqqxtfvn.exe"	svchost.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

1792 svchost.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

vqqxtfvn.exe

description pid process target process

PID 1040 set thread context of 1792 1040 vqqxtfvn.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

1932 sc.exe
940 sc.exe
928 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
1792	svchost.exe

description	pid	process	target process
PID 1040 set thread context of 1792	1040	vqqxtfvn.exe	svchost.exe

pid	process
1932	sc.exe
940	sc.exe
928	sc.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

1b66f5287e70ab31b12e42bfad9d69ca94e4e8025cc4c3ece1d254be0bf787e9.exevqqxtfvn.exe

description	pid	process	target process
PID 948 wrote to memory of 1712	948	1b66f5287e70ab31b12e42bfad9d69ca94e4e8025cc4c3ece1d254be0bf787e9.exe	cmd.exe
PID 948 wrote to memory of 1712	948	1b66f5287e70ab31b12e42bfad9d69ca94e4e8025cc4c3ece1d254be0bf787e9.exe	cmd.exe
PID 948 wrote to memory of 1712	948	1b66f5287e70ab31b12e42bfad9d69ca94e4e8025cc4c3ece1d254be0bf787e9.exe	cmd.exe
PID 948 wrote to memory of 1712	948	1b66f5287e70ab31b12e42bfad9d69ca94e4e8025cc4c3ece1d254be0bf787e9.exe	cmd.exe
PID 948 wrote to memory of 1796	948	1b66f5287e70ab31b12e42bfad9d69ca94e4e8025cc4c3ece1d254be0bf787e9.exe	cmd.exe
PID 948 wrote to memory of 1796	948	1b66f5287e70ab31b12e42bfad9d69ca94e4e8025cc4c3ece1d254be0bf787e9.exe	cmd.exe
PID 948 wrote to memory of 1796	948	1b66f5287e70ab31b12e42bfad9d69ca94e4e8025cc4c3ece1d254be0bf787e9.exe	cmd.exe
PID 948 wrote to memory of 1796	948	1b66f5287e70ab31b12e42bfad9d69ca94e4e8025cc4c3ece1d254be0bf787e9.exe	cmd.exe
PID 948 wrote to memory of 1932	948	1b66f5287e70ab31b12e42bfad9d69ca94e4e8025cc4c3ece1d254be0bf787e9.exe	sc.exe
PID 948 wrote to memory of 1932	948	1b66f5287e70ab31b12e42bfad9d69ca94e4e8025cc4c3ece1d254be0bf787e9.exe	sc.exe
PID 948 wrote to memory of 1932	948	1b66f5287e70ab31b12e42bfad9d69ca94e4e8025cc4c3ece1d254be0bf787e9.exe	sc.exe
PID 948 wrote to memory of 1932	948	1b66f5287e70ab31b12e42bfad9d69ca94e4e8025cc4c3ece1d254be0bf787e9.exe	sc.exe
PID 948 wrote to memory of 940	948	1b66f5287e70ab31b12e42bfad9d69ca94e4e8025cc4c3ece1d254be0bf787e9.exe	sc.exe
PID 948 wrote to memory of 940	948	1b66f5287e70ab31b12e42bfad9d69ca94e4e8025cc4c3ece1d254be0bf787e9.exe	sc.exe
PID 948 wrote to memory of 940	948	1b66f5287e70ab31b12e42bfad9d69ca94e4e8025cc4c3ece1d254be0bf787e9.exe	sc.exe
PID 948 wrote to memory of 940	948	1b66f5287e70ab31b12e42bfad9d69ca94e4e8025cc4c3ece1d254be0bf787e9.exe	sc.exe
PID 948 wrote to memory of 928	948	1b66f5287e70ab31b12e42bfad9d69ca94e4e8025cc4c3ece1d254be0bf787e9.exe	sc.exe
PID 948 wrote to memory of 928	948	1b66f5287e70ab31b12e42bfad9d69ca94e4e8025cc4c3ece1d254be0bf787e9.exe	sc.exe
PID 948 wrote to memory of 928	948	1b66f5287e70ab31b12e42bfad9d69ca94e4e8025cc4c3ece1d254be0bf787e9.exe	sc.exe
PID 948 wrote to memory of 928	948	1b66f5287e70ab31b12e42bfad9d69ca94e4e8025cc4c3ece1d254be0bf787e9.exe	sc.exe
PID 948 wrote to memory of 468	948	1b66f5287e70ab31b12e42bfad9d69ca94e4e8025cc4c3ece1d254be0bf787e9.exe	netsh.exe
PID 948 wrote to memory of 468	948	1b66f5287e70ab31b12e42bfad9d69ca94e4e8025cc4c3ece1d254be0bf787e9.exe	netsh.exe
PID 948 wrote to memory of 468	948	1b66f5287e70ab31b12e42bfad9d69ca94e4e8025cc4c3ece1d254be0bf787e9.exe	netsh.exe
PID 948 wrote to memory of 468	948	1b66f5287e70ab31b12e42bfad9d69ca94e4e8025cc4c3ece1d254be0bf787e9.exe	netsh.exe
PID 1040 wrote to memory of 1792	1040	vqqxtfvn.exe	svchost.exe
PID 1040 wrote to memory of 1792	1040	vqqxtfvn.exe	svchost.exe
PID 1040 wrote to memory of 1792	1040	vqqxtfvn.exe	svchost.exe
PID 1040 wrote to memory of 1792	1040	vqqxtfvn.exe	svchost.exe
PID 1040 wrote to memory of 1792	1040	vqqxtfvn.exe	svchost.exe
PID 1040 wrote to memory of 1792	1040	vqqxtfvn.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\1b66f5287e70ab31b12e42bfad9d69ca94e4e8025cc4c3ece1d254be0bf787e9.exe
"C:\Users\Admin\AppData\Local\Temp\1b66f5287e70ab31b12e42bfad9d69ca94e4e8025cc4c3ece1d254be0bf787e9.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:948

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\lmbdjhnh\
2⤵
PID:1712

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\vqqxtfvn.exe" C:\Windows\SysWOW64\lmbdjhnh\
2⤵
PID:1796

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create lmbdjhnh binPath= "C:\Windows\SysWOW64\lmbdjhnh\vqqxtfvn.exe /d\"C:\Users\Admin\AppData\Local\Temp\1b66f5287e70ab31b12e42bfad9d69ca94e4e8025cc4c3ece1d254be0bf787e9.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:1932

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description lmbdjhnh "wifi internet conection"
2⤵
- Launches sc.exe
PID:940

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start lmbdjhnh
2⤵
- Launches sc.exe
PID:928

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:468

C:\Windows\SysWOW64\lmbdjhnh\vqqxtfvn.exe
C:\Windows\SysWOW64\lmbdjhnh\vqqxtfvn.exe /d"C:\Users\Admin\AppData\Local\Temp\1b66f5287e70ab31b12e42bfad9d69ca94e4e8025cc4c3ece1d254be0bf787e9.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1040

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Windows security bypass
- Sets service image path in registry
- Deletes itself
PID:1792

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

Disabling Security Tools

Modify Registry

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\vqqxtfvn.exe
Filesize
14.2MB

MD5
f7ea6fdf973e771684b35db3e396b4a7

SHA1
021a12c36328dbeab8ed855d91bde777f070e243

SHA256
a4a7de25be11b90fcc27f8dcd91235189b1b527c8353e0e7ea91afef74310331

SHA512
6896152feab72af74ac8898daa7227a73571b36fa397940a9ec5a94dc829ea3dbf38f4f1b88e6020ae3bc73ff4566204064076d7edf27aff9fa69bc204a508ba

Download Submit
C:\Windows\SysWOW64\lmbdjhnh\vqqxtfvn.exe
Filesize
14.2MB

MD5
f7ea6fdf973e771684b35db3e396b4a7

SHA1
021a12c36328dbeab8ed855d91bde777f070e243

SHA256
a4a7de25be11b90fcc27f8dcd91235189b1b527c8353e0e7ea91afef74310331

SHA512
6896152feab72af74ac8898daa7227a73571b36fa397940a9ec5a94dc829ea3dbf38f4f1b88e6020ae3bc73ff4566204064076d7edf27aff9fa69bc204a508ba

Download Submit
memory/468-63-0x0000000000000000-mapping.dmp

Download
memory/928-61-0x0000000000000000-mapping.dmp

Download
memory/940-60-0x0000000000000000-mapping.dmp

Download
memory/948-54-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/948-55-0x0000000074F21000-0x0000000074F23000-memory.dmp

Filesize
8KB

Download
memory/1040-65-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/1712-56-0x0000000000000000-mapping.dmp

Download
memory/1792-67-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1792-69-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1792-70-0x0000000000089A6B-mapping.dmp

Download
memory/1792-73-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1792-74-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1792-75-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1796-57-0x0000000000000000-mapping.dmp

Download
memory/1932-59-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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