tofsee | 901a6e2c22ea76188dde3daca9e06098efe263395d8fe3e7040b13a0b426da7c

General

Target

adf0aa260fb8907a875b917311d03d43.exe
Size

11.1MB
MD5

adf0aa260fb8907a875b917311d03d43
SHA1

a60c140529e592bac90323e9a59d667627298681
SHA256

901a6e2c22ea76188dde3daca9e06098efe263395d8fe3e7040b13a0b426da7c
SHA512

02f6e7418eec00809df60ed650cb20674cb263cbe9d37edb0dfc94db93077f30ab98baf4415ba5c69c5a8bb86080055faa42d1bd91787cffd859d18281929c29

Score

10^/10

tofsee evasion persistence trojan

Malware Config

Signatures

Tofsee
Backdoor/botnet which carries out malicious activities based on commands from a C2 server.
trojan tofsee
Windows security bypass 2 TTPs
evasion trojan

Disabling Security Tools
T1089

Modify Registry
T1112
Creates new service(s) 1 TTPs
persistence

New Service
T1050
Executes dropped EXE 1 IoCs

Processes:

ktlktfja.exe

pid process

3656 ktlktfja.exe
Modifies Windows Firewall 1 TTPs
evasion

Modify Existing Service
T1031
Sets service image path in registry 2 TTPs
persistence

Registry Run Keys / Startup Folder
T1060

Modify Registry
T1112
Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

1144 svchost.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

ktlktfja.exe

description pid process target process

PID 3656 set thread context of 1144 3656 ktlktfja.exe svchost.exe
Launches sc.exe
Sc.exe is a Windows utlilty to control services on the system.

pid	process
3656	ktlktfja.exe

pid	process
1144	svchost.exe

description	pid	process	target process
PID 3656 set thread context of 1144	3656	ktlktfja.exe	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

adf0aa260fb8907a875b917311d03d43.exektlktfja.exe

description	pid	process	target process
PID 1036 wrote to memory of 2504	1036	adf0aa260fb8907a875b917311d03d43.exe	cmd.exe
PID 1036 wrote to memory of 2504	1036	adf0aa260fb8907a875b917311d03d43.exe	cmd.exe
PID 1036 wrote to memory of 2504	1036	adf0aa260fb8907a875b917311d03d43.exe	cmd.exe
PID 1036 wrote to memory of 2596	1036	adf0aa260fb8907a875b917311d03d43.exe	cmd.exe
PID 1036 wrote to memory of 2596	1036	adf0aa260fb8907a875b917311d03d43.exe	cmd.exe
PID 1036 wrote to memory of 2596	1036	adf0aa260fb8907a875b917311d03d43.exe	cmd.exe
PID 1036 wrote to memory of 2368	1036	adf0aa260fb8907a875b917311d03d43.exe	sc.exe
PID 1036 wrote to memory of 2368	1036	adf0aa260fb8907a875b917311d03d43.exe	sc.exe
PID 1036 wrote to memory of 2368	1036	adf0aa260fb8907a875b917311d03d43.exe	sc.exe
PID 1036 wrote to memory of 3300	1036	adf0aa260fb8907a875b917311d03d43.exe	sc.exe
PID 1036 wrote to memory of 3300	1036	adf0aa260fb8907a875b917311d03d43.exe	sc.exe
PID 1036 wrote to memory of 3300	1036	adf0aa260fb8907a875b917311d03d43.exe	sc.exe
PID 1036 wrote to memory of 2376	1036	adf0aa260fb8907a875b917311d03d43.exe	sc.exe
PID 1036 wrote to memory of 2376	1036	adf0aa260fb8907a875b917311d03d43.exe	sc.exe
PID 1036 wrote to memory of 2376	1036	adf0aa260fb8907a875b917311d03d43.exe	sc.exe
PID 3656 wrote to memory of 1144	3656	ktlktfja.exe	svchost.exe
PID 3656 wrote to memory of 1144	3656	ktlktfja.exe	svchost.exe
PID 3656 wrote to memory of 1144	3656	ktlktfja.exe	svchost.exe
PID 1036 wrote to memory of 3548	1036	adf0aa260fb8907a875b917311d03d43.exe	netsh.exe
PID 1036 wrote to memory of 3548	1036	adf0aa260fb8907a875b917311d03d43.exe	netsh.exe
PID 1036 wrote to memory of 3548	1036	adf0aa260fb8907a875b917311d03d43.exe	netsh.exe
PID 3656 wrote to memory of 1144	3656	ktlktfja.exe	svchost.exe
PID 3656 wrote to memory of 1144	3656	ktlktfja.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\adf0aa260fb8907a875b917311d03d43.exe
"C:\Users\Admin\AppData\Local\Temp\adf0aa260fb8907a875b917311d03d43.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1036

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\xbkgjgvs\
2⤵
PID:2504

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ktlktfja.exe" C:\Windows\SysWOW64\xbkgjgvs\
2⤵
PID:2596

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create xbkgjgvs binPath= "C:\Windows\SysWOW64\xbkgjgvs\ktlktfja.exe /d\"C:\Users\Admin\AppData\Local\Temp\adf0aa260fb8907a875b917311d03d43.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
PID:2368

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description xbkgjgvs "wifi internet conection"
2⤵
PID:3300

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start xbkgjgvs
2⤵
PID:2376

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⤵
PID:3548

C:\Windows\SysWOW64\xbkgjgvs\ktlktfja.exe
C:\Windows\SysWOW64\xbkgjgvs\ktlktfja.exe /d"C:\Users\Admin\AppData\Local\Temp\adf0aa260fb8907a875b917311d03d43.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3656

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Deletes itself
PID:1144

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

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\ktlktfja.exe
MD5
d3e9a9db53b1a7cf9beae4dfa3bd51d1

SHA1
d977b7142af6167937484109294a2c07b247bf5c

SHA256
c52bdae7d384c6a8a4c97849756855b18b4f88ec7e35dfc7d6f2c7f01eff3d93

SHA512
b9d2729705d816883b4a0fbd697bd9e86c0d4450811bb18e941d81f25ed40e1dd9bccb9b2cf58f48dfa78a1f68187f8dce972ca7bb799ae1f4b6b806f5cf141a

Download Submit
C:\Windows\SysWOW64\xbkgjgvs\ktlktfja.exe
MD5
d3e9a9db53b1a7cf9beae4dfa3bd51d1

SHA1
d977b7142af6167937484109294a2c07b247bf5c

SHA256
c52bdae7d384c6a8a4c97849756855b18b4f88ec7e35dfc7d6f2c7f01eff3d93

SHA512
b9d2729705d816883b4a0fbd697bd9e86c0d4450811bb18e941d81f25ed40e1dd9bccb9b2cf58f48dfa78a1f68187f8dce972ca7bb799ae1f4b6b806f5cf141a

Download Submit
memory/1144-10-0x0000000000570000-0x0000000000585000-memory.dmp

Filesize
84KB

Download
memory/1144-11-0x0000000000579A6B-mapping.dmp

Download
memory/2368-5-0x0000000000000000-mapping.dmp

Download
memory/2376-7-0x0000000000000000-mapping.dmp

Download
memory/2504-2-0x0000000000000000-mapping.dmp

Download
memory/2596-3-0x0000000000000000-mapping.dmp

Download
memory/3300-6-0x0000000000000000-mapping.dmp

Download
memory/3548-9-0x0000000000000000-mapping.dmp

Download

Analysis

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