tofsee | d4c8775b95b6d0f4c5384a6526afa7f00aeabb08aa6a1fe545e4193d60a2c205

General

Target

d4c8775b95b6d0f4c5384a6526afa7f00aeabb08aa6a1fe545e4193d60a2c205.exe
Size

168KB
MD5

c8789056c4fa188b6f6d23e2da5e8655
SHA1

bffc6adeee841c0976e31d6518bab3f5e85bd589
SHA256

d4c8775b95b6d0f4c5384a6526afa7f00aeabb08aa6a1fe545e4193d60a2c205
SHA512

be89c3d2b76c2da856395a0d935206d9a1da034f501d8a029a8925903328cfad4e4d21ada9fe646e51fd046b197edf49f6666cc9b0d4fc2926009567cd20fba1
SSDEEP

3072:9omFCseno3BYS59iEemUxOCzpSu0Ih2Wzb:Rheo3BhezxpCIA

Score

10^/10

tofsee evasion persistence trojan

Malware Config

Extracted

Family

tofsee

C2

svartalfheim.top

jotunheim.name

Signatures

Tofsee
Backdoor/botnet which carries out malicious activities based on commands from a C2 server.
trojan tofsee
Creates new service(s) 1 TTPs
persistence

New Service
T1050
Executes dropped EXE 1 IoCs

Processes:

teafwpbq.exe

pid process

3364 teafwpbq.exe
Modifies Windows Firewall 1 TTPs 1 IoCs
evasion

Modify Existing Service
T1031

Processes:

netsh.exe

pid process

4824 netsh.exe

pid	process
3364	teafwpbq.exe

pid	process
4824	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\psawyglk\ImagePath = "C:\\Windows\\SysWOW64\\psawyglk\\teafwpbq.exe"	svchost.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

d4c8775b95b6d0f4c5384a6526afa7f00aeabb08aa6a1fe545e4193d60a2c205.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation	d4c8775b95b6d0f4c5384a6526afa7f00aeabb08aa6a1fe545e4193d60a2c205.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

teafwpbq.exe

description pid process target process

PID 3364 set thread context of 452 3364 teafwpbq.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

3964 sc.exe
3568 sc.exe
4440 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

description	pid	process	target process
PID 3364 set thread context of 452	3364	teafwpbq.exe	svchost.exe

pid	process
3964	sc.exe
3568	sc.exe
4440	sc.exe

Program crash 2 IoCs

Processes:

WerFault.exeWerFault.exe

pid	pid_target	process	target process
4088	2064	WerFault.exe	d4c8775b95b6d0f4c5384a6526afa7f00aeabb08aa6a1fe545e4193d60a2c205.exe
3588	3364	WerFault.exe	teafwpbq.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

d4c8775b95b6d0f4c5384a6526afa7f00aeabb08aa6a1fe545e4193d60a2c205.exeteafwpbq.exe

description	pid	process	target process
PID 2064 wrote to memory of 3068	2064	d4c8775b95b6d0f4c5384a6526afa7f00aeabb08aa6a1fe545e4193d60a2c205.exe	cmd.exe
PID 2064 wrote to memory of 3068	2064	d4c8775b95b6d0f4c5384a6526afa7f00aeabb08aa6a1fe545e4193d60a2c205.exe	cmd.exe
PID 2064 wrote to memory of 3068	2064	d4c8775b95b6d0f4c5384a6526afa7f00aeabb08aa6a1fe545e4193d60a2c205.exe	cmd.exe
PID 2064 wrote to memory of 1972	2064	d4c8775b95b6d0f4c5384a6526afa7f00aeabb08aa6a1fe545e4193d60a2c205.exe	cmd.exe
PID 2064 wrote to memory of 1972	2064	d4c8775b95b6d0f4c5384a6526afa7f00aeabb08aa6a1fe545e4193d60a2c205.exe	cmd.exe
PID 2064 wrote to memory of 1972	2064	d4c8775b95b6d0f4c5384a6526afa7f00aeabb08aa6a1fe545e4193d60a2c205.exe	cmd.exe
PID 2064 wrote to memory of 3964	2064	d4c8775b95b6d0f4c5384a6526afa7f00aeabb08aa6a1fe545e4193d60a2c205.exe	sc.exe
PID 2064 wrote to memory of 3964	2064	d4c8775b95b6d0f4c5384a6526afa7f00aeabb08aa6a1fe545e4193d60a2c205.exe	sc.exe
PID 2064 wrote to memory of 3964	2064	d4c8775b95b6d0f4c5384a6526afa7f00aeabb08aa6a1fe545e4193d60a2c205.exe	sc.exe
PID 2064 wrote to memory of 3568	2064	d4c8775b95b6d0f4c5384a6526afa7f00aeabb08aa6a1fe545e4193d60a2c205.exe	sc.exe
PID 2064 wrote to memory of 3568	2064	d4c8775b95b6d0f4c5384a6526afa7f00aeabb08aa6a1fe545e4193d60a2c205.exe	sc.exe
PID 2064 wrote to memory of 3568	2064	d4c8775b95b6d0f4c5384a6526afa7f00aeabb08aa6a1fe545e4193d60a2c205.exe	sc.exe
PID 2064 wrote to memory of 4440	2064	d4c8775b95b6d0f4c5384a6526afa7f00aeabb08aa6a1fe545e4193d60a2c205.exe	sc.exe
PID 2064 wrote to memory of 4440	2064	d4c8775b95b6d0f4c5384a6526afa7f00aeabb08aa6a1fe545e4193d60a2c205.exe	sc.exe
PID 2064 wrote to memory of 4440	2064	d4c8775b95b6d0f4c5384a6526afa7f00aeabb08aa6a1fe545e4193d60a2c205.exe	sc.exe
PID 2064 wrote to memory of 4824	2064	d4c8775b95b6d0f4c5384a6526afa7f00aeabb08aa6a1fe545e4193d60a2c205.exe	netsh.exe
PID 2064 wrote to memory of 4824	2064	d4c8775b95b6d0f4c5384a6526afa7f00aeabb08aa6a1fe545e4193d60a2c205.exe	netsh.exe
PID 2064 wrote to memory of 4824	2064	d4c8775b95b6d0f4c5384a6526afa7f00aeabb08aa6a1fe545e4193d60a2c205.exe	netsh.exe
PID 3364 wrote to memory of 452	3364	teafwpbq.exe	svchost.exe
PID 3364 wrote to memory of 452	3364	teafwpbq.exe	svchost.exe
PID 3364 wrote to memory of 452	3364	teafwpbq.exe	svchost.exe
PID 3364 wrote to memory of 452	3364	teafwpbq.exe	svchost.exe
PID 3364 wrote to memory of 452	3364	teafwpbq.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\d4c8775b95b6d0f4c5384a6526afa7f00aeabb08aa6a1fe545e4193d60a2c205.exe
"C:\Users\Admin\AppData\Local\Temp\d4c8775b95b6d0f4c5384a6526afa7f00aeabb08aa6a1fe545e4193d60a2c205.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2064

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\psawyglk\
2⤵
PID:3068

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\teafwpbq.exe" C:\Windows\SysWOW64\psawyglk\
2⤵
PID:1972

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create psawyglk binPath= "C:\Windows\SysWOW64\psawyglk\teafwpbq.exe /d\"C:\Users\Admin\AppData\Local\Temp\d4c8775b95b6d0f4c5384a6526afa7f00aeabb08aa6a1fe545e4193d60a2c205.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:3964

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description psawyglk "wifi internet conection"
2⤵
- Launches sc.exe
PID:3568

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start psawyglk
2⤵
- Launches sc.exe
PID:4440

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:4824

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2064 -s 1044
2⤵
- Program crash
PID:4088

C:\Windows\SysWOW64\psawyglk\teafwpbq.exe
C:\Windows\SysWOW64\psawyglk\teafwpbq.exe /d"C:\Users\Admin\AppData\Local\Temp\d4c8775b95b6d0f4c5384a6526afa7f00aeabb08aa6a1fe545e4193d60a2c205.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3364

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Sets service image path in registry
PID:452

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 3364 -s 512
2⤵
- Program crash
PID:3588

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 2064 -ip 2064
1⤵
PID:4216

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 3364 -ip 3364
1⤵
PID:3848

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

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\teafwpbq.exe
Filesize
10.1MB

MD5
c8710105259b7095cbd83c8f32f0cc50

SHA1
d23be27904b8945731c55f8dfb0982a09de0b0f1

SHA256
d73c7ddb8ab8402e91bc1fd963d3900c57071bf9e02ba81671ca3936662e0f87

SHA512
60d81aff9619ee29c484d7931e67e596dd3d799187757365e6e9c1aff1b166e4fbf5f718ee94c7670896ac451180e729ebcd97758439d9af67f1116919bcbe67

Download Submit
C:\Windows\SysWOW64\psawyglk\teafwpbq.exe
Filesize
10.1MB

MD5
c8710105259b7095cbd83c8f32f0cc50

SHA1
d23be27904b8945731c55f8dfb0982a09de0b0f1

SHA256
d73c7ddb8ab8402e91bc1fd963d3900c57071bf9e02ba81671ca3936662e0f87

SHA512
60d81aff9619ee29c484d7931e67e596dd3d799187757365e6e9c1aff1b166e4fbf5f718ee94c7670896ac451180e729ebcd97758439d9af67f1116919bcbe67

Download Submit
memory/452-152-0x0000000000AB0000-0x0000000000AC5000-memory.dmp

Filesize
84KB

Download
memory/452-149-0x0000000000AB0000-0x0000000000AC5000-memory.dmp

Filesize
84KB

Download
memory/452-144-0x0000000000AB0000-0x0000000000AC5000-memory.dmp

Filesize
84KB

Download
memory/452-143-0x0000000000000000-mapping.dmp

Download
memory/1972-136-0x0000000000000000-mapping.dmp

Download
memory/2064-132-0x00000000009CE000-0x00000000009DF000-memory.dmp

Filesize
68KB

Download
memory/2064-134-0x0000000000400000-0x000000000070B000-memory.dmp

Filesize
3.0MB

Download
memory/2064-150-0x00000000009CE000-0x00000000009DF000-memory.dmp

Filesize
68KB

Download
memory/2064-151-0x0000000000400000-0x000000000070B000-memory.dmp

Filesize
3.0MB

Download
memory/2064-133-0x0000000002450000-0x0000000002463000-memory.dmp

Filesize
76KB

Download
memory/3068-135-0x0000000000000000-mapping.dmp

Download
memory/3364-146-0x0000000000959000-0x0000000000969000-memory.dmp

Filesize
64KB

Download
memory/3364-148-0x0000000000400000-0x000000000070B000-memory.dmp

Filesize
3.0MB

Download
memory/3568-139-0x0000000000000000-mapping.dmp

Download
memory/3964-138-0x0000000000000000-mapping.dmp

Download
memory/4440-140-0x0000000000000000-mapping.dmp

Download
memory/4824-142-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads