tofsee | 12c8a5d0074b51c3d799ef722a7d97e7e1490529064759ef5932e0e76f28bf7e

General

Target

12c8a5d0074b51c3d799ef722a7d97e7e1490529064759ef5932e0e76f28bf7e.exe
Size

350KB
MD5

38e3f0f985ad66154c83f39a43c7b499
SHA1

c2082df23b60440e5e5661feab6001183c79c299
SHA256

12c8a5d0074b51c3d799ef722a7d97e7e1490529064759ef5932e0e76f28bf7e
SHA512

c955c141ca47679985da8cce632d0bcc6572956d5a19918061afc64067acda98f180385837c302e0e76e0386a06db085175131ee52569a3fb324becf795a19ce
SSDEEP

6144:G3gLadmInlyjX3m3iCww4ek4NYpIlIwassuYQuRjMgU:Gw2dHcjX3m3iC9SEYpIlHaBpdRQg

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:

hxqoluba.exe

pid process

4104 hxqoluba.exe
Modifies Windows Firewall 1 TTPs 1 IoCs
evasion

Modify Existing Service
T1031

Processes:

netsh.exe

pid process

4408 netsh.exe

pid	process
4104	hxqoluba.exe

pid	process
4408	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\ceiatfnt\ImagePath = "C:\\Windows\\SysWOW64\\ceiatfnt\\hxqoluba.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:

12c8a5d0074b51c3d799ef722a7d97e7e1490529064759ef5932e0e76f28bf7e.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\Control Panel\International\Geo\Nation	12c8a5d0074b51c3d799ef722a7d97e7e1490529064759ef5932e0e76f28bf7e.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

hxqoluba.exe

description pid process target process

PID 4104 set thread context of 4028 4104 hxqoluba.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

3832 sc.exe
3560 sc.exe
1244 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 4104 set thread context of 4028	4104	hxqoluba.exe	svchost.exe

pid	process
3832	sc.exe
3560	sc.exe
1244	sc.exe

Program crash 2 IoCs

Processes:

WerFault.exeWerFault.exe

pid	pid_target	process	target process
2124	632	WerFault.exe	12c8a5d0074b51c3d799ef722a7d97e7e1490529064759ef5932e0e76f28bf7e.exe
2600	4104	WerFault.exe	hxqoluba.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

12c8a5d0074b51c3d799ef722a7d97e7e1490529064759ef5932e0e76f28bf7e.exehxqoluba.exe

description	pid	process	target process
PID 632 wrote to memory of 4464	632	12c8a5d0074b51c3d799ef722a7d97e7e1490529064759ef5932e0e76f28bf7e.exe	cmd.exe
PID 632 wrote to memory of 4464	632	12c8a5d0074b51c3d799ef722a7d97e7e1490529064759ef5932e0e76f28bf7e.exe	cmd.exe
PID 632 wrote to memory of 4464	632	12c8a5d0074b51c3d799ef722a7d97e7e1490529064759ef5932e0e76f28bf7e.exe	cmd.exe
PID 632 wrote to memory of 4660	632	12c8a5d0074b51c3d799ef722a7d97e7e1490529064759ef5932e0e76f28bf7e.exe	cmd.exe
PID 632 wrote to memory of 4660	632	12c8a5d0074b51c3d799ef722a7d97e7e1490529064759ef5932e0e76f28bf7e.exe	cmd.exe
PID 632 wrote to memory of 4660	632	12c8a5d0074b51c3d799ef722a7d97e7e1490529064759ef5932e0e76f28bf7e.exe	cmd.exe
PID 632 wrote to memory of 3832	632	12c8a5d0074b51c3d799ef722a7d97e7e1490529064759ef5932e0e76f28bf7e.exe	sc.exe
PID 632 wrote to memory of 3832	632	12c8a5d0074b51c3d799ef722a7d97e7e1490529064759ef5932e0e76f28bf7e.exe	sc.exe
PID 632 wrote to memory of 3832	632	12c8a5d0074b51c3d799ef722a7d97e7e1490529064759ef5932e0e76f28bf7e.exe	sc.exe
PID 632 wrote to memory of 3560	632	12c8a5d0074b51c3d799ef722a7d97e7e1490529064759ef5932e0e76f28bf7e.exe	sc.exe
PID 632 wrote to memory of 3560	632	12c8a5d0074b51c3d799ef722a7d97e7e1490529064759ef5932e0e76f28bf7e.exe	sc.exe
PID 632 wrote to memory of 3560	632	12c8a5d0074b51c3d799ef722a7d97e7e1490529064759ef5932e0e76f28bf7e.exe	sc.exe
PID 632 wrote to memory of 1244	632	12c8a5d0074b51c3d799ef722a7d97e7e1490529064759ef5932e0e76f28bf7e.exe	sc.exe
PID 632 wrote to memory of 1244	632	12c8a5d0074b51c3d799ef722a7d97e7e1490529064759ef5932e0e76f28bf7e.exe	sc.exe
PID 632 wrote to memory of 1244	632	12c8a5d0074b51c3d799ef722a7d97e7e1490529064759ef5932e0e76f28bf7e.exe	sc.exe
PID 632 wrote to memory of 4408	632	12c8a5d0074b51c3d799ef722a7d97e7e1490529064759ef5932e0e76f28bf7e.exe	netsh.exe
PID 632 wrote to memory of 4408	632	12c8a5d0074b51c3d799ef722a7d97e7e1490529064759ef5932e0e76f28bf7e.exe	netsh.exe
PID 632 wrote to memory of 4408	632	12c8a5d0074b51c3d799ef722a7d97e7e1490529064759ef5932e0e76f28bf7e.exe	netsh.exe
PID 4104 wrote to memory of 4028	4104	hxqoluba.exe	svchost.exe
PID 4104 wrote to memory of 4028	4104	hxqoluba.exe	svchost.exe
PID 4104 wrote to memory of 4028	4104	hxqoluba.exe	svchost.exe
PID 4104 wrote to memory of 4028	4104	hxqoluba.exe	svchost.exe
PID 4104 wrote to memory of 4028	4104	hxqoluba.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\12c8a5d0074b51c3d799ef722a7d97e7e1490529064759ef5932e0e76f28bf7e.exe
"C:\Users\Admin\AppData\Local\Temp\12c8a5d0074b51c3d799ef722a7d97e7e1490529064759ef5932e0e76f28bf7e.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:632

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ceiatfnt\
2⤵
PID:4464

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\hxqoluba.exe" C:\Windows\SysWOW64\ceiatfnt\
2⤵
PID:4660

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create ceiatfnt binPath= "C:\Windows\SysWOW64\ceiatfnt\hxqoluba.exe /d\"C:\Users\Admin\AppData\Local\Temp\12c8a5d0074b51c3d799ef722a7d97e7e1490529064759ef5932e0e76f28bf7e.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:3832

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description ceiatfnt "wifi internet conection"
2⤵
- Launches sc.exe
PID:3560

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start ceiatfnt
2⤵
- Launches sc.exe
PID:1244

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:4408

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 632 -s 648
2⤵
- Program crash
PID:2124

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 632 -ip 632
1⤵
PID:2216

C:\Windows\SysWOW64\ceiatfnt\hxqoluba.exe
C:\Windows\SysWOW64\ceiatfnt\hxqoluba.exe /d"C:\Users\Admin\AppData\Local\Temp\12c8a5d0074b51c3d799ef722a7d97e7e1490529064759ef5932e0e76f28bf7e.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4104

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Sets service image path in registry
PID:4028

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 4104 -s 532
2⤵
- Program crash
PID:2600

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 4104 -ip 4104
1⤵
PID:4248

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\hxqoluba.exe
Filesize
12.0MB

MD5
30f6089cab905dc111721c0082504e88

SHA1
cdf962ea1cfe1d72eafaceb4570546c790ec67cb

SHA256
7db3b609ccad92687c7c63f2d83b9980fe9bc16b00e5029af28e3cfb080dc520

SHA512
1fd66c2763958840d0dfa65e5abf6b96dadbca760ecac670b327260e5a42f15e301f70574d723fc7c7618d6d89aece2bbbbac87d854ea870f5dfd17e99ae5fcb

Download Submit
C:\Windows\SysWOW64\ceiatfnt\hxqoluba.exe
Filesize
12.0MB

MD5
30f6089cab905dc111721c0082504e88

SHA1
cdf962ea1cfe1d72eafaceb4570546c790ec67cb

SHA256
7db3b609ccad92687c7c63f2d83b9980fe9bc16b00e5029af28e3cfb080dc520

SHA512
1fd66c2763958840d0dfa65e5abf6b96dadbca760ecac670b327260e5a42f15e301f70574d723fc7c7618d6d89aece2bbbbac87d854ea870f5dfd17e99ae5fcb

Download Submit
memory/632-132-0x00000000004B7000-0x00000000004CC000-memory.dmp

Filesize
84KB

Download
memory/632-133-0x00000000005A0000-0x00000000005B3000-memory.dmp

Filesize
76KB

Download
memory/632-134-0x00000000004B7000-0x00000000004CC000-memory.dmp

Filesize
84KB

Download
memory/632-135-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/632-145-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/632-144-0x00000000005A0000-0x00000000005B3000-memory.dmp

Filesize
76KB

Download
memory/632-143-0x00000000004B7000-0x00000000004CC000-memory.dmp

Filesize
84KB

Download
memory/1244-141-0x0000000000000000-mapping.dmp

Download
memory/3560-140-0x0000000000000000-mapping.dmp

Download
memory/3832-139-0x0000000000000000-mapping.dmp

Download
memory/4028-153-0x0000000001290000-0x00000000012A5000-memory.dmp

Filesize
84KB

Download
memory/4028-155-0x0000000001290000-0x00000000012A5000-memory.dmp

Filesize
84KB

Download
memory/4028-149-0x0000000000000000-mapping.dmp

Download
memory/4028-150-0x0000000001290000-0x00000000012A5000-memory.dmp

Filesize
84KB

Download
memory/4104-154-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/4104-147-0x00000000006A2000-0x00000000006B8000-memory.dmp

Filesize
88KB

Download
memory/4104-148-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/4408-142-0x0000000000000000-mapping.dmp

Download
memory/4464-136-0x0000000000000000-mapping.dmp

Download
memory/4660-137-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads