tofsee | acd329362b311a912e88b825259f552d41d15ec07a7c640fb14f3327a514b323

General

Target

8129457fa7210937a1467a21f241b201.exe
Size

14.3MB
MD5

8129457fa7210937a1467a21f241b201
SHA1

f5013dad172969224076ca791692ac60d2f5f027
SHA256

acd329362b311a912e88b825259f552d41d15ec07a7c640fb14f3327a514b323
SHA512

9ae2f59095e0afe5839d8356461cb4d385edfc02161b54c4cb39f2649afb24924265bd4a43c853f062243a9fe55e5b2947cb8b78bf7ca26321c91205fd35b86e

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:

frsmhdeb.exe

pid process

656 frsmhdeb.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

1956 svchost.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

frsmhdeb.exe

description pid process target process

PID 656 set thread context of 1956 656 frsmhdeb.exe svchost.exe
Launches sc.exe
Sc.exe is a Windows utlilty to control services on the system.

pid	process
656	frsmhdeb.exe

pid	process
1956	svchost.exe

description	pid	process	target process
PID 656 set thread context of 1956	656	frsmhdeb.exe	svchost.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

8129457fa7210937a1467a21f241b201.exefrsmhdeb.exe

description	pid	process	target process
PID 1672 wrote to memory of 1424	1672	8129457fa7210937a1467a21f241b201.exe	cmd.exe
PID 1672 wrote to memory of 1424	1672	8129457fa7210937a1467a21f241b201.exe	cmd.exe
PID 1672 wrote to memory of 1424	1672	8129457fa7210937a1467a21f241b201.exe	cmd.exe
PID 1672 wrote to memory of 1424	1672	8129457fa7210937a1467a21f241b201.exe	cmd.exe
PID 1672 wrote to memory of 1708	1672	8129457fa7210937a1467a21f241b201.exe	cmd.exe
PID 1672 wrote to memory of 1708	1672	8129457fa7210937a1467a21f241b201.exe	cmd.exe
PID 1672 wrote to memory of 1708	1672	8129457fa7210937a1467a21f241b201.exe	cmd.exe
PID 1672 wrote to memory of 1708	1672	8129457fa7210937a1467a21f241b201.exe	cmd.exe
PID 1672 wrote to memory of 1692	1672	8129457fa7210937a1467a21f241b201.exe	sc.exe
PID 1672 wrote to memory of 1692	1672	8129457fa7210937a1467a21f241b201.exe	sc.exe
PID 1672 wrote to memory of 1692	1672	8129457fa7210937a1467a21f241b201.exe	sc.exe
PID 1672 wrote to memory of 1692	1672	8129457fa7210937a1467a21f241b201.exe	sc.exe
PID 1672 wrote to memory of 1648	1672	8129457fa7210937a1467a21f241b201.exe	sc.exe
PID 1672 wrote to memory of 1648	1672	8129457fa7210937a1467a21f241b201.exe	sc.exe
PID 1672 wrote to memory of 1648	1672	8129457fa7210937a1467a21f241b201.exe	sc.exe
PID 1672 wrote to memory of 1648	1672	8129457fa7210937a1467a21f241b201.exe	sc.exe
PID 1672 wrote to memory of 1096	1672	8129457fa7210937a1467a21f241b201.exe	sc.exe
PID 1672 wrote to memory of 1096	1672	8129457fa7210937a1467a21f241b201.exe	sc.exe
PID 1672 wrote to memory of 1096	1672	8129457fa7210937a1467a21f241b201.exe	sc.exe
PID 1672 wrote to memory of 1096	1672	8129457fa7210937a1467a21f241b201.exe	sc.exe
PID 656 wrote to memory of 1956	656	frsmhdeb.exe	svchost.exe
PID 656 wrote to memory of 1956	656	frsmhdeb.exe	svchost.exe
PID 656 wrote to memory of 1956	656	frsmhdeb.exe	svchost.exe
PID 656 wrote to memory of 1956	656	frsmhdeb.exe	svchost.exe
PID 656 wrote to memory of 1956	656	frsmhdeb.exe	svchost.exe
PID 656 wrote to memory of 1956	656	frsmhdeb.exe	svchost.exe
PID 1672 wrote to memory of 552	1672	8129457fa7210937a1467a21f241b201.exe	netsh.exe
PID 1672 wrote to memory of 552	1672	8129457fa7210937a1467a21f241b201.exe	netsh.exe
PID 1672 wrote to memory of 552	1672	8129457fa7210937a1467a21f241b201.exe	netsh.exe
PID 1672 wrote to memory of 552	1672	8129457fa7210937a1467a21f241b201.exe	netsh.exe

C:\Users\Admin\AppData\Local\Temp\8129457fa7210937a1467a21f241b201.exe
"C:\Users\Admin\AppData\Local\Temp\8129457fa7210937a1467a21f241b201.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1672

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\hpdvkypg\
2⤵
PID:1424

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\frsmhdeb.exe" C:\Windows\SysWOW64\hpdvkypg\
2⤵
PID:1708

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create hpdvkypg binPath= "C:\Windows\SysWOW64\hpdvkypg\frsmhdeb.exe /d\"C:\Users\Admin\AppData\Local\Temp\8129457fa7210937a1467a21f241b201.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
PID:1692

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description hpdvkypg "wifi internet conection"
2⤵
PID:1648

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start hpdvkypg
2⤵
PID:1096

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:552

C:\Windows\SysWOW64\hpdvkypg\frsmhdeb.exe
C:\Windows\SysWOW64\hpdvkypg\frsmhdeb.exe /d"C:\Users\Admin\AppData\Local\Temp\8129457fa7210937a1467a21f241b201.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:656

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Deletes itself
PID:1956

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\frsmhdeb.exe
MD5
027ddc4a490ff9a3b1b6c07f64590ebe

SHA1
8c3797da4be77953a24393a9a177ba8c49e47726

SHA256
7e20d756cd61aeefbdecca80d28cccd1fa16674c9299f3eddb2e92e70258e2ed

SHA512
e88b4b0855e527094f0b479a27e1c04295da099c531071843f94897a247b0188efa1a2257bb770eee0c1d5ec63a52a0f9c3ab087b0b2f2d888b360cf5ef08385

Download Submit
C:\Windows\SysWOW64\hpdvkypg\frsmhdeb.exe
MD5
027ddc4a490ff9a3b1b6c07f64590ebe

SHA1
8c3797da4be77953a24393a9a177ba8c49e47726

SHA256
7e20d756cd61aeefbdecca80d28cccd1fa16674c9299f3eddb2e92e70258e2ed

SHA512
e88b4b0855e527094f0b479a27e1c04295da099c531071843f94897a247b0188efa1a2257bb770eee0c1d5ec63a52a0f9c3ab087b0b2f2d888b360cf5ef08385

Download Submit
memory/552-12-0x0000000000000000-mapping.dmp

Download
memory/1096-7-0x0000000000000000-mapping.dmp

Download
memory/1424-2-0x0000000000000000-mapping.dmp

Download
memory/1648-6-0x0000000000000000-mapping.dmp

Download
memory/1692-5-0x0000000000000000-mapping.dmp

Download
memory/1708-3-0x0000000000000000-mapping.dmp

Download
memory/1956-9-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1956-10-0x0000000000089A6B-mapping.dmp

Download

Analysis

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