tofsee | bf32d8eacf9b5dbaba44bd0992359c7901c732c97350e047759aa2054a968725

General

Target

519c5ce5aaedf029cd10b0e70a08eaf817cdfbaf1cf420e8ef9e14f4671b72bd.exe
Size

11.6MB
MD5

ca48c2a5c3d617e0538e0baadaa23bc7
SHA1

42936532aa66b923d389a496352e7494bdd8ba23
SHA256

519c5ce5aaedf029cd10b0e70a08eaf817cdfbaf1cf420e8ef9e14f4671b72bd
SHA512

79966f4ee83d1f2ffaaaffe2590375ea26c5ef1c42bbae50727ddf561d98a0d2928fb332ae568fec02da3140f17b1a6f1e1ca77cdc4ae0fd8d1bd663bc0afefe

Score

10^/10

tofsee evasion persistence trojan

Malware Config

Extracted

Family

tofsee

C2

mubrikych.top

oxxyfix.xyz

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:

rjmoypre.exe

pid process

4304 rjmoypre.exe
Modifies Windows Firewall 1 TTPs 1 IoCs
evasion

Modify Existing Service
T1031

Processes:

netsh.exe

pid process

3808 netsh.exe

pid	process
4304	rjmoypre.exe

pid	process
3808	netsh.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:

519c5ce5aaedf029cd10b0e70a08eaf817cdfbaf1cf420e8ef9e14f4671b72bd.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Control Panel\International\Geo\Nation	519c5ce5aaedf029cd10b0e70a08eaf817cdfbaf1cf420e8ef9e14f4671b72bd.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

rjmoypre.exe

description pid process target process

PID 4304 set thread context of 1476 4304 rjmoypre.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

2868 sc.exe
1756 sc.exe
3432 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 4304 set thread context of 1476	4304	rjmoypre.exe	svchost.exe

pid	process
2868	sc.exe
1756	sc.exe
3432	sc.exe

Program crash 2 IoCs

Processes:

WerFault.exeWerFault.exe

pid	pid_target	process	target process
4404	1424	WerFault.exe	519c5ce5aaedf029cd10b0e70a08eaf817cdfbaf1cf420e8ef9e14f4671b72bd.exe
1996	4304	WerFault.exe	rjmoypre.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

519c5ce5aaedf029cd10b0e70a08eaf817cdfbaf1cf420e8ef9e14f4671b72bd.exerjmoypre.exe

description	pid	process	target process
PID 1424 wrote to memory of 2644	1424	519c5ce5aaedf029cd10b0e70a08eaf817cdfbaf1cf420e8ef9e14f4671b72bd.exe	cmd.exe
PID 1424 wrote to memory of 2644	1424	519c5ce5aaedf029cd10b0e70a08eaf817cdfbaf1cf420e8ef9e14f4671b72bd.exe	cmd.exe
PID 1424 wrote to memory of 2644	1424	519c5ce5aaedf029cd10b0e70a08eaf817cdfbaf1cf420e8ef9e14f4671b72bd.exe	cmd.exe
PID 1424 wrote to memory of 4192	1424	519c5ce5aaedf029cd10b0e70a08eaf817cdfbaf1cf420e8ef9e14f4671b72bd.exe	cmd.exe
PID 1424 wrote to memory of 4192	1424	519c5ce5aaedf029cd10b0e70a08eaf817cdfbaf1cf420e8ef9e14f4671b72bd.exe	cmd.exe
PID 1424 wrote to memory of 4192	1424	519c5ce5aaedf029cd10b0e70a08eaf817cdfbaf1cf420e8ef9e14f4671b72bd.exe	cmd.exe
PID 1424 wrote to memory of 1756	1424	519c5ce5aaedf029cd10b0e70a08eaf817cdfbaf1cf420e8ef9e14f4671b72bd.exe	sc.exe
PID 1424 wrote to memory of 1756	1424	519c5ce5aaedf029cd10b0e70a08eaf817cdfbaf1cf420e8ef9e14f4671b72bd.exe	sc.exe
PID 1424 wrote to memory of 1756	1424	519c5ce5aaedf029cd10b0e70a08eaf817cdfbaf1cf420e8ef9e14f4671b72bd.exe	sc.exe
PID 1424 wrote to memory of 3432	1424	519c5ce5aaedf029cd10b0e70a08eaf817cdfbaf1cf420e8ef9e14f4671b72bd.exe	sc.exe
PID 1424 wrote to memory of 3432	1424	519c5ce5aaedf029cd10b0e70a08eaf817cdfbaf1cf420e8ef9e14f4671b72bd.exe	sc.exe
PID 1424 wrote to memory of 3432	1424	519c5ce5aaedf029cd10b0e70a08eaf817cdfbaf1cf420e8ef9e14f4671b72bd.exe	sc.exe
PID 1424 wrote to memory of 2868	1424	519c5ce5aaedf029cd10b0e70a08eaf817cdfbaf1cf420e8ef9e14f4671b72bd.exe	sc.exe
PID 1424 wrote to memory of 2868	1424	519c5ce5aaedf029cd10b0e70a08eaf817cdfbaf1cf420e8ef9e14f4671b72bd.exe	sc.exe
PID 1424 wrote to memory of 2868	1424	519c5ce5aaedf029cd10b0e70a08eaf817cdfbaf1cf420e8ef9e14f4671b72bd.exe	sc.exe
PID 1424 wrote to memory of 3808	1424	519c5ce5aaedf029cd10b0e70a08eaf817cdfbaf1cf420e8ef9e14f4671b72bd.exe	netsh.exe
PID 1424 wrote to memory of 3808	1424	519c5ce5aaedf029cd10b0e70a08eaf817cdfbaf1cf420e8ef9e14f4671b72bd.exe	netsh.exe
PID 1424 wrote to memory of 3808	1424	519c5ce5aaedf029cd10b0e70a08eaf817cdfbaf1cf420e8ef9e14f4671b72bd.exe	netsh.exe
PID 4304 wrote to memory of 1476	4304	rjmoypre.exe	svchost.exe
PID 4304 wrote to memory of 1476	4304	rjmoypre.exe	svchost.exe
PID 4304 wrote to memory of 1476	4304	rjmoypre.exe	svchost.exe
PID 4304 wrote to memory of 1476	4304	rjmoypre.exe	svchost.exe
PID 4304 wrote to memory of 1476	4304	rjmoypre.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\519c5ce5aaedf029cd10b0e70a08eaf817cdfbaf1cf420e8ef9e14f4671b72bd.exe
"C:\Users\Admin\AppData\Local\Temp\519c5ce5aaedf029cd10b0e70a08eaf817cdfbaf1cf420e8ef9e14f4671b72bd.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1424

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\idcrffiz\
2⤵
PID:2644

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\rjmoypre.exe" C:\Windows\SysWOW64\idcrffiz\
2⤵
PID:4192

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create idcrffiz binPath= "C:\Windows\SysWOW64\idcrffiz\rjmoypre.exe /d\"C:\Users\Admin\AppData\Local\Temp\519c5ce5aaedf029cd10b0e70a08eaf817cdfbaf1cf420e8ef9e14f4671b72bd.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:1756

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description idcrffiz "wifi internet conection"
2⤵
- Launches sc.exe
PID:3432

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start idcrffiz
2⤵
- Launches sc.exe
PID:2868

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:3808

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1424 -s 1164
2⤵
- Program crash
PID:4404

C:\Windows\SysWOW64\idcrffiz\rjmoypre.exe
C:\Windows\SysWOW64\idcrffiz\rjmoypre.exe /d"C:\Users\Admin\AppData\Local\Temp\519c5ce5aaedf029cd10b0e70a08eaf817cdfbaf1cf420e8ef9e14f4671b72bd.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4304

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
PID:1476

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 4304 -s 248
2⤵
- Program crash
PID:1996

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 1424 -ip 1424
1⤵
PID:1140

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 204 -p 4304 -ip 4304
1⤵
PID:2168

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

New Service

1

T1050

Modify Existing Service

1

T1031

Privilege Escalation

New Service

1

T1050

Defense Evasion

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\rjmoypre.exe
Filesize
10.5MB

MD5
f1ce8ae150398c7fd3a630d3bed68199

SHA1
f12e3c732b309d5dc59f0dd22ca874a6f2558ab7

SHA256
0fe3e1e0b50afd72e934636cb168360eb1cfd440eb4f31e88622dbda75a8a673

SHA512
a34925aeb32e5f6f36a676bbf23b3ca9ed910458150118b412eb3f88d60adf11ab4cf988abaa20f329cf4bd18a41c06c1ac998262896f4fbaab313aa6be545b9

Download Submit
C:\Windows\SysWOW64\idcrffiz\rjmoypre.exe
Filesize
10.5MB

MD5
f1ce8ae150398c7fd3a630d3bed68199

SHA1
f12e3c732b309d5dc59f0dd22ca874a6f2558ab7

SHA256
0fe3e1e0b50afd72e934636cb168360eb1cfd440eb4f31e88622dbda75a8a673

SHA512
a34925aeb32e5f6f36a676bbf23b3ca9ed910458150118b412eb3f88d60adf11ab4cf988abaa20f329cf4bd18a41c06c1ac998262896f4fbaab313aa6be545b9

Download Submit
memory/1424-131-0x00000000005F0000-0x0000000000603000-memory.dmp

Filesize
76KB

Download
memory/1424-132-0x0000000000400000-0x00000000004D4000-memory.dmp

Filesize
848KB

Download
memory/1424-130-0x0000000000629000-0x000000000063A000-memory.dmp

Filesize
68KB

Download
memory/1424-141-0x0000000000400000-0x00000000004D4000-memory.dmp

Filesize
848KB

Download
memory/1476-143-0x0000000000CF0000-0x0000000000D05000-memory.dmp

Filesize
84KB

Download
memory/1476-142-0x0000000000000000-mapping.dmp

Download
memory/1756-136-0x0000000000000000-mapping.dmp

Download
memory/2644-133-0x0000000000000000-mapping.dmp

Download
memory/2868-138-0x0000000000000000-mapping.dmp

Download
memory/3432-137-0x0000000000000000-mapping.dmp

Download
memory/3808-140-0x0000000000000000-mapping.dmp

Download
memory/4192-134-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads