tofsee | 2a0a1e4045873d15044e2725e2f65c0a7fbd6dade9a2b2ec65a84cb6a87977ae

General

Target

9274f09e455169d55a5c965f5bd74c5e.exe
Size

14.4MB
MD5

9274f09e455169d55a5c965f5bd74c5e
SHA1

09ade51af159576ed06a5de8b087fc151943c955
SHA256

2a0a1e4045873d15044e2725e2f65c0a7fbd6dade9a2b2ec65a84cb6a87977ae
SHA512

5fb259bef76cb4545757c701c7fc0f663440ecf63eee47b45e35e46a5fbf6f1a21b950ddacce156cf41a3f22cbe92e3eb45a1b74ac54a4707d9b4d009c3de5be

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:

ylzceecp.exe

pid process

1336 ylzceecp.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

816 svchost.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

ylzceecp.exe

description pid process target process

PID 1336 set thread context of 816 1336 ylzceecp.exe svchost.exe
Launches sc.exe
Sc.exe is a Windows utlilty to control services on the system.

pid	process
1336	ylzceecp.exe

pid	process
816	svchost.exe

description	pid	process	target process
PID 1336 set thread context of 816	1336	ylzceecp.exe	svchost.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

9274f09e455169d55a5c965f5bd74c5e.exeylzceecp.exe

description	pid	process	target process
PID 1680 wrote to memory of 368	1680	9274f09e455169d55a5c965f5bd74c5e.exe	cmd.exe
PID 1680 wrote to memory of 368	1680	9274f09e455169d55a5c965f5bd74c5e.exe	cmd.exe
PID 1680 wrote to memory of 368	1680	9274f09e455169d55a5c965f5bd74c5e.exe	cmd.exe
PID 1680 wrote to memory of 368	1680	9274f09e455169d55a5c965f5bd74c5e.exe	cmd.exe
PID 1680 wrote to memory of 1388	1680	9274f09e455169d55a5c965f5bd74c5e.exe	cmd.exe
PID 1680 wrote to memory of 1388	1680	9274f09e455169d55a5c965f5bd74c5e.exe	cmd.exe
PID 1680 wrote to memory of 1388	1680	9274f09e455169d55a5c965f5bd74c5e.exe	cmd.exe
PID 1680 wrote to memory of 1388	1680	9274f09e455169d55a5c965f5bd74c5e.exe	cmd.exe
PID 1680 wrote to memory of 1728	1680	9274f09e455169d55a5c965f5bd74c5e.exe	sc.exe
PID 1680 wrote to memory of 1728	1680	9274f09e455169d55a5c965f5bd74c5e.exe	sc.exe
PID 1680 wrote to memory of 1728	1680	9274f09e455169d55a5c965f5bd74c5e.exe	sc.exe
PID 1680 wrote to memory of 1728	1680	9274f09e455169d55a5c965f5bd74c5e.exe	sc.exe
PID 1680 wrote to memory of 1344	1680	9274f09e455169d55a5c965f5bd74c5e.exe	sc.exe
PID 1680 wrote to memory of 1344	1680	9274f09e455169d55a5c965f5bd74c5e.exe	sc.exe
PID 1680 wrote to memory of 1344	1680	9274f09e455169d55a5c965f5bd74c5e.exe	sc.exe
PID 1680 wrote to memory of 1344	1680	9274f09e455169d55a5c965f5bd74c5e.exe	sc.exe
PID 1680 wrote to memory of 1500	1680	9274f09e455169d55a5c965f5bd74c5e.exe	sc.exe
PID 1680 wrote to memory of 1500	1680	9274f09e455169d55a5c965f5bd74c5e.exe	sc.exe
PID 1680 wrote to memory of 1500	1680	9274f09e455169d55a5c965f5bd74c5e.exe	sc.exe
PID 1680 wrote to memory of 1500	1680	9274f09e455169d55a5c965f5bd74c5e.exe	sc.exe
PID 1680 wrote to memory of 760	1680	9274f09e455169d55a5c965f5bd74c5e.exe	netsh.exe
PID 1680 wrote to memory of 760	1680	9274f09e455169d55a5c965f5bd74c5e.exe	netsh.exe
PID 1680 wrote to memory of 760	1680	9274f09e455169d55a5c965f5bd74c5e.exe	netsh.exe
PID 1680 wrote to memory of 760	1680	9274f09e455169d55a5c965f5bd74c5e.exe	netsh.exe
PID 1336 wrote to memory of 816	1336	ylzceecp.exe	svchost.exe
PID 1336 wrote to memory of 816	1336	ylzceecp.exe	svchost.exe
PID 1336 wrote to memory of 816	1336	ylzceecp.exe	svchost.exe
PID 1336 wrote to memory of 816	1336	ylzceecp.exe	svchost.exe
PID 1336 wrote to memory of 816	1336	ylzceecp.exe	svchost.exe
PID 1336 wrote to memory of 816	1336	ylzceecp.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\9274f09e455169d55a5c965f5bd74c5e.exe
"C:\Users\Admin\AppData\Local\Temp\9274f09e455169d55a5c965f5bd74c5e.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1680

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\rrjfuujl\
2⤵
PID:368

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ylzceecp.exe" C:\Windows\SysWOW64\rrjfuujl\
2⤵
PID:1388

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create rrjfuujl binPath= "C:\Windows\SysWOW64\rrjfuujl\ylzceecp.exe /d\"C:\Users\Admin\AppData\Local\Temp\9274f09e455169d55a5c965f5bd74c5e.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
PID:1728

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description rrjfuujl "wifi internet conection"
2⤵
PID:1344

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start rrjfuujl
2⤵
PID:1500

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:760

C:\Windows\SysWOW64\rrjfuujl\ylzceecp.exe
C:\Windows\SysWOW64\rrjfuujl\ylzceecp.exe /d"C:\Users\Admin\AppData\Local\Temp\9274f09e455169d55a5c965f5bd74c5e.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1336

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Deletes itself
PID:816

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\ylzceecp.exe
MD5
c2b0502c677ac0ba982f0af99ed7a567

SHA1
d94b9a91582ee5024f3838e9fd83a9eecfc2fb13

SHA256
b7348f9f9365ee26b13791789e64f37899a03ac539c5befeb0af13c600902362

SHA512
94524777a51bc874f1341ec5b0bc6402a272c294037c7602d52033373d21e1ef5e755687e583c385d136ec15ecd83bcbaba245244d98824a84ab3ace8d9defb5

Download Submit
C:\Windows\SysWOW64\rrjfuujl\ylzceecp.exe
MD5
c2b0502c677ac0ba982f0af99ed7a567

SHA1
d94b9a91582ee5024f3838e9fd83a9eecfc2fb13

SHA256
b7348f9f9365ee26b13791789e64f37899a03ac539c5befeb0af13c600902362

SHA512
94524777a51bc874f1341ec5b0bc6402a272c294037c7602d52033373d21e1ef5e755687e583c385d136ec15ecd83bcbaba245244d98824a84ab3ace8d9defb5

Download Submit
memory/368-2-0x0000000000000000-mapping.dmp

Download
memory/760-8-0x0000000000000000-mapping.dmp

Download
memory/816-11-0x0000000000089A6B-mapping.dmp

Download
memory/816-10-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1344-6-0x0000000000000000-mapping.dmp

Download
memory/1388-3-0x0000000000000000-mapping.dmp

Download
memory/1500-7-0x0000000000000000-mapping.dmp

Download
memory/1728-5-0x0000000000000000-mapping.dmp

Download

Analysis

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