tofsee | 1095e251f8219d5aa618e9dc41ac314fb1cb1989580bdd60dac00cd6a903d053

General

Target

3ca6d488bd6aff540495e9624fdb502d.exe
Size

11.1MB
MD5

3ca6d488bd6aff540495e9624fdb502d
SHA1

c050425bb11844672672ec0a87808b731afefd2a
SHA256

1095e251f8219d5aa618e9dc41ac314fb1cb1989580bdd60dac00cd6a903d053
SHA512

73a4fc3beab31fe61f46fd67af4d5077ed8707c7ed80fc29981512d417b524ec46a2f49ada955efea011533d9b4cbefa8d17365132bef5ed6ca75bd69a8271f6

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:

mpxxvtxg.exe

pid process

2160 mpxxvtxg.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

2356 svchost.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

mpxxvtxg.exe

description pid process target process

PID 2160 set thread context of 2356 2160 mpxxvtxg.exe svchost.exe
Launches sc.exe
Sc.exe is a Windows utlilty to control services on the system.

pid	process
2160	mpxxvtxg.exe

pid	process
2356	svchost.exe

description	pid	process	target process
PID 2160 set thread context of 2356	2160	mpxxvtxg.exe	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

3ca6d488bd6aff540495e9624fdb502d.exempxxvtxg.exe

description	pid	process	target process
PID 2604 wrote to memory of 3876	2604	3ca6d488bd6aff540495e9624fdb502d.exe	cmd.exe
PID 2604 wrote to memory of 3876	2604	3ca6d488bd6aff540495e9624fdb502d.exe	cmd.exe
PID 2604 wrote to memory of 3876	2604	3ca6d488bd6aff540495e9624fdb502d.exe	cmd.exe
PID 2604 wrote to memory of 3412	2604	3ca6d488bd6aff540495e9624fdb502d.exe	cmd.exe
PID 2604 wrote to memory of 3412	2604	3ca6d488bd6aff540495e9624fdb502d.exe	cmd.exe
PID 2604 wrote to memory of 3412	2604	3ca6d488bd6aff540495e9624fdb502d.exe	cmd.exe
PID 2604 wrote to memory of 2640	2604	3ca6d488bd6aff540495e9624fdb502d.exe	sc.exe
PID 2604 wrote to memory of 2640	2604	3ca6d488bd6aff540495e9624fdb502d.exe	sc.exe
PID 2604 wrote to memory of 2640	2604	3ca6d488bd6aff540495e9624fdb502d.exe	sc.exe
PID 2604 wrote to memory of 1336	2604	3ca6d488bd6aff540495e9624fdb502d.exe	sc.exe
PID 2604 wrote to memory of 1336	2604	3ca6d488bd6aff540495e9624fdb502d.exe	sc.exe
PID 2604 wrote to memory of 1336	2604	3ca6d488bd6aff540495e9624fdb502d.exe	sc.exe
PID 2604 wrote to memory of 1488	2604	3ca6d488bd6aff540495e9624fdb502d.exe	sc.exe
PID 2604 wrote to memory of 1488	2604	3ca6d488bd6aff540495e9624fdb502d.exe	sc.exe
PID 2604 wrote to memory of 1488	2604	3ca6d488bd6aff540495e9624fdb502d.exe	sc.exe
PID 2604 wrote to memory of 3124	2604	3ca6d488bd6aff540495e9624fdb502d.exe	netsh.exe
PID 2604 wrote to memory of 3124	2604	3ca6d488bd6aff540495e9624fdb502d.exe	netsh.exe
PID 2604 wrote to memory of 3124	2604	3ca6d488bd6aff540495e9624fdb502d.exe	netsh.exe
PID 2160 wrote to memory of 2356	2160	mpxxvtxg.exe	svchost.exe
PID 2160 wrote to memory of 2356	2160	mpxxvtxg.exe	svchost.exe
PID 2160 wrote to memory of 2356	2160	mpxxvtxg.exe	svchost.exe
PID 2160 wrote to memory of 2356	2160	mpxxvtxg.exe	svchost.exe
PID 2160 wrote to memory of 2356	2160	mpxxvtxg.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\3ca6d488bd6aff540495e9624fdb502d.exe
"C:\Users\Admin\AppData\Local\Temp\3ca6d488bd6aff540495e9624fdb502d.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2604

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\amqrzlrq\
2⤵
PID:3876

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\mpxxvtxg.exe" C:\Windows\SysWOW64\amqrzlrq\
2⤵
PID:3412

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create amqrzlrq binPath= "C:\Windows\SysWOW64\amqrzlrq\mpxxvtxg.exe /d\"C:\Users\Admin\AppData\Local\Temp\3ca6d488bd6aff540495e9624fdb502d.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
PID:2640

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description amqrzlrq "wifi internet conection"
2⤵
PID:1336

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start amqrzlrq
2⤵
PID:1488

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:3124

C:\Windows\SysWOW64\amqrzlrq\mpxxvtxg.exe
C:\Windows\SysWOW64\amqrzlrq\mpxxvtxg.exe /d"C:\Users\Admin\AppData\Local\Temp\3ca6d488bd6aff540495e9624fdb502d.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2160

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Deletes itself
PID:2356

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\mpxxvtxg.exe
MD5
e4ce5e6cb7b9f23f70494b98781627e2

SHA1
be50879299c20a7e2aa7594d2c6eb144652f1222

SHA256
c659ea9e8293b75f7460532fa1eedd6ee9cec8437ef9f020e1050ca74a358caf

SHA512
80f1d4cc4a2b21c2b09412b3db870170e7e2131a6cb047627eee1e702d5fe9a8ff7f3c96a6c80b0e9801a1e97093a2fea79379063d30ebea00e018dd7ddc7ff9

Download Submit
C:\Windows\SysWOW64\amqrzlrq\mpxxvtxg.exe
MD5
e4ce5e6cb7b9f23f70494b98781627e2

SHA1
be50879299c20a7e2aa7594d2c6eb144652f1222

SHA256
c659ea9e8293b75f7460532fa1eedd6ee9cec8437ef9f020e1050ca74a358caf

SHA512
80f1d4cc4a2b21c2b09412b3db870170e7e2131a6cb047627eee1e702d5fe9a8ff7f3c96a6c80b0e9801a1e97093a2fea79379063d30ebea00e018dd7ddc7ff9

Download Submit
memory/1336-6-0x0000000000000000-mapping.dmp

Download
memory/1488-7-0x0000000000000000-mapping.dmp

Download
memory/2356-10-0x0000000002E00000-0x0000000002E15000-memory.dmp

Filesize
84KB

Download
memory/2356-11-0x0000000002E09A6B-mapping.dmp

Download
memory/2640-5-0x0000000000000000-mapping.dmp

Download
memory/3124-8-0x0000000000000000-mapping.dmp

Download
memory/3412-3-0x0000000000000000-mapping.dmp

Download
memory/3876-2-0x0000000000000000-mapping.dmp

Download

Analysis

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