tofsee | a9902d7bdf0624e1ff06148f72152231297961eb67bc8e74b4561d39834dd405

General

Target

a9902d7bdf0624e1ff06148f72152231297961eb67bc8e74b4561d39834dd405.exe
Size

315KB
MD5

ba8869744b32796d25afeb3c0647c3a7
SHA1

f9c34582937abffc2d06b05a1446a5c37662a23a
SHA256

a9902d7bdf0624e1ff06148f72152231297961eb67bc8e74b4561d39834dd405
SHA512

758f82f4262ef7095656040fae62eb1df7f3c66399a03b009d7f29f68677a2d6f481f2d2e047b1b0d9155b416dc4099eb10652d75fa9d753cc626739ad330981

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\nbqbuskm = "0"	svchost.exe

Creates new service(s) 1 TTPs
persistence

New Service
T1050
Executes dropped EXE 1 IoCs

Processes:

oikhbxhm.exe

pid process

884 oikhbxhm.exe
Modifies Windows Firewall 1 TTPs 1 IoCs
evasion

Modify Existing Service
T1031

Processes:

netsh.exe

pid process

392 netsh.exe

pid	process
884	oikhbxhm.exe

pid	process
392	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\nbqbuskm\ImagePath = "C:\\Windows\\SysWOW64\\nbqbuskm\\oikhbxhm.exe"	svchost.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

612 svchost.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

oikhbxhm.exe

description pid process target process

PID 884 set thread context of 612 884 oikhbxhm.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

1312 sc.exe
876 sc.exe
2024 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
612	svchost.exe

description	pid	process	target process
PID 884 set thread context of 612	884	oikhbxhm.exe	svchost.exe

pid	process
1312	sc.exe
876	sc.exe
2024	sc.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

a9902d7bdf0624e1ff06148f72152231297961eb67bc8e74b4561d39834dd405.exeoikhbxhm.exe

description	pid	process	target process
PID 1172 wrote to memory of 1968	1172	a9902d7bdf0624e1ff06148f72152231297961eb67bc8e74b4561d39834dd405.exe	cmd.exe
PID 1172 wrote to memory of 1968	1172	a9902d7bdf0624e1ff06148f72152231297961eb67bc8e74b4561d39834dd405.exe	cmd.exe
PID 1172 wrote to memory of 1968	1172	a9902d7bdf0624e1ff06148f72152231297961eb67bc8e74b4561d39834dd405.exe	cmd.exe
PID 1172 wrote to memory of 1968	1172	a9902d7bdf0624e1ff06148f72152231297961eb67bc8e74b4561d39834dd405.exe	cmd.exe
PID 1172 wrote to memory of 1096	1172	a9902d7bdf0624e1ff06148f72152231297961eb67bc8e74b4561d39834dd405.exe	cmd.exe
PID 1172 wrote to memory of 1096	1172	a9902d7bdf0624e1ff06148f72152231297961eb67bc8e74b4561d39834dd405.exe	cmd.exe
PID 1172 wrote to memory of 1096	1172	a9902d7bdf0624e1ff06148f72152231297961eb67bc8e74b4561d39834dd405.exe	cmd.exe
PID 1172 wrote to memory of 1096	1172	a9902d7bdf0624e1ff06148f72152231297961eb67bc8e74b4561d39834dd405.exe	cmd.exe
PID 1172 wrote to memory of 2024	1172	a9902d7bdf0624e1ff06148f72152231297961eb67bc8e74b4561d39834dd405.exe	sc.exe
PID 1172 wrote to memory of 2024	1172	a9902d7bdf0624e1ff06148f72152231297961eb67bc8e74b4561d39834dd405.exe	sc.exe
PID 1172 wrote to memory of 2024	1172	a9902d7bdf0624e1ff06148f72152231297961eb67bc8e74b4561d39834dd405.exe	sc.exe
PID 1172 wrote to memory of 2024	1172	a9902d7bdf0624e1ff06148f72152231297961eb67bc8e74b4561d39834dd405.exe	sc.exe
PID 1172 wrote to memory of 1312	1172	a9902d7bdf0624e1ff06148f72152231297961eb67bc8e74b4561d39834dd405.exe	sc.exe
PID 1172 wrote to memory of 1312	1172	a9902d7bdf0624e1ff06148f72152231297961eb67bc8e74b4561d39834dd405.exe	sc.exe
PID 1172 wrote to memory of 1312	1172	a9902d7bdf0624e1ff06148f72152231297961eb67bc8e74b4561d39834dd405.exe	sc.exe
PID 1172 wrote to memory of 1312	1172	a9902d7bdf0624e1ff06148f72152231297961eb67bc8e74b4561d39834dd405.exe	sc.exe
PID 1172 wrote to memory of 876	1172	a9902d7bdf0624e1ff06148f72152231297961eb67bc8e74b4561d39834dd405.exe	sc.exe
PID 1172 wrote to memory of 876	1172	a9902d7bdf0624e1ff06148f72152231297961eb67bc8e74b4561d39834dd405.exe	sc.exe
PID 1172 wrote to memory of 876	1172	a9902d7bdf0624e1ff06148f72152231297961eb67bc8e74b4561d39834dd405.exe	sc.exe
PID 1172 wrote to memory of 876	1172	a9902d7bdf0624e1ff06148f72152231297961eb67bc8e74b4561d39834dd405.exe	sc.exe
PID 884 wrote to memory of 612	884	oikhbxhm.exe	svchost.exe
PID 884 wrote to memory of 612	884	oikhbxhm.exe	svchost.exe
PID 884 wrote to memory of 612	884	oikhbxhm.exe	svchost.exe
PID 884 wrote to memory of 612	884	oikhbxhm.exe	svchost.exe
PID 884 wrote to memory of 612	884	oikhbxhm.exe	svchost.exe
PID 884 wrote to memory of 612	884	oikhbxhm.exe	svchost.exe
PID 1172 wrote to memory of 392	1172	a9902d7bdf0624e1ff06148f72152231297961eb67bc8e74b4561d39834dd405.exe	netsh.exe
PID 1172 wrote to memory of 392	1172	a9902d7bdf0624e1ff06148f72152231297961eb67bc8e74b4561d39834dd405.exe	netsh.exe
PID 1172 wrote to memory of 392	1172	a9902d7bdf0624e1ff06148f72152231297961eb67bc8e74b4561d39834dd405.exe	netsh.exe
PID 1172 wrote to memory of 392	1172	a9902d7bdf0624e1ff06148f72152231297961eb67bc8e74b4561d39834dd405.exe	netsh.exe

C:\Users\Admin\AppData\Local\Temp\a9902d7bdf0624e1ff06148f72152231297961eb67bc8e74b4561d39834dd405.exe
"C:\Users\Admin\AppData\Local\Temp\a9902d7bdf0624e1ff06148f72152231297961eb67bc8e74b4561d39834dd405.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1172

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\nbqbuskm\
2⤵
PID:1968

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\oikhbxhm.exe" C:\Windows\SysWOW64\nbqbuskm\
2⤵
PID:1096

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create nbqbuskm binPath= "C:\Windows\SysWOW64\nbqbuskm\oikhbxhm.exe /d\"C:\Users\Admin\AppData\Local\Temp\a9902d7bdf0624e1ff06148f72152231297961eb67bc8e74b4561d39834dd405.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:2024

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description nbqbuskm "wifi internet conection"
2⤵
- Launches sc.exe
PID:1312

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start nbqbuskm
2⤵
- Launches sc.exe
PID:876

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:392

C:\Windows\SysWOW64\nbqbuskm\oikhbxhm.exe
C:\Windows\SysWOW64\nbqbuskm\oikhbxhm.exe /d"C:\Users\Admin\AppData\Local\Temp\a9902d7bdf0624e1ff06148f72152231297961eb67bc8e74b4561d39834dd405.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:884

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Windows security bypass
- Sets service image path in registry
- Deletes itself
PID:612

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\oikhbxhm.exe
Filesize
14.0MB

MD5
30c9545c1dc780ae9645543a2811fc2f

SHA1
d53b6e6aaff6b3e3a29bc6e61693d27be5c238af

SHA256
0d27fccd83ce7d1a71513329f2028805b6675ffbfdb7b686a23f0becfc047c92

SHA512
4636b0c86587d0ccc9474ad13e061f78eb3982e8dc9b24bab65f54075130bd37f769ce6a21f71085dd58ce4043e7720ea2b3993cc90b5b742587080f9fcc8bfd

Download Submit
C:\Windows\SysWOW64\nbqbuskm\oikhbxhm.exe
Filesize
14.0MB

MD5
30c9545c1dc780ae9645543a2811fc2f

SHA1
d53b6e6aaff6b3e3a29bc6e61693d27be5c238af

SHA256
0d27fccd83ce7d1a71513329f2028805b6675ffbfdb7b686a23f0becfc047c92

SHA512
4636b0c86587d0ccc9474ad13e061f78eb3982e8dc9b24bab65f54075130bd37f769ce6a21f71085dd58ce4043e7720ea2b3993cc90b5b742587080f9fcc8bfd

Download Submit
memory/392-75-0x0000000000000000-mapping.dmp

Download
memory/612-81-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/612-67-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/612-79-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/612-69-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/612-70-0x00000000000C9A6B-mapping.dmp

Download
memory/876-63-0x0000000000000000-mapping.dmp

Download
memory/884-65-0x00000000002C0000-0x00000000002CE000-memory.dmp

Filesize
56KB

Download
memory/884-72-0x00000000002C0000-0x00000000002CE000-memory.dmp

Filesize
56KB

Download
memory/884-77-0x0000000000400000-0x00000000052AF000-memory.dmp

Filesize
78.7MB

Download
memory/1096-58-0x0000000000000000-mapping.dmp

Download
memory/1172-55-0x00000000754F1000-0x00000000754F3000-memory.dmp

Filesize
8KB

Download
memory/1172-56-0x0000000005451000-0x000000000545F000-memory.dmp

Filesize
56KB

Download
memory/1172-54-0x0000000005451000-0x000000000545F000-memory.dmp

Filesize
56KB

Download
memory/1172-78-0x0000000000400000-0x00000000052AF000-memory.dmp

Filesize
78.7MB

Download
memory/1172-60-0x0000000000400000-0x00000000052AF000-memory.dmp

Filesize
78.7MB

Download
memory/1172-76-0x0000000005451000-0x000000000545F000-memory.dmp

Filesize
56KB

Download
memory/1312-62-0x0000000000000000-mapping.dmp

Download
memory/1968-57-0x0000000000000000-mapping.dmp

Download
memory/2024-61-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads