tofsee | 3289502006a84fdf3228454fcfdb37cc8b070a85a9f1ddcea523f1f0627045df

General

Target

3289502006a84fdf3228454fcfdb37cc8b070a85a9f1ddcea523f1f0627045df.exe
Size

184KB
MD5

198adec9193e9d8439446c2e7162f587
SHA1

c1dbffe0751a4b1aad8bb14b116cbbac5a94dce2
SHA256

3289502006a84fdf3228454fcfdb37cc8b070a85a9f1ddcea523f1f0627045df
SHA512

de0bf5aec25e3daf785751290ccda4a4da84f8685863e5ccd7147f5e4ab6ee4cf7f8482cb688f33802fbe6d788303c0edec4d8a5c62a218228e54ef2ab3e95b8
SSDEEP

3072:r0My61L0m+/AcOMn5tN4NOg1dY9RiD1b/P21XGKRw+6HOqw3:IMCm+/AchWd1GRiDtn21XG+Mu

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:

urlmjrho.exe

pid process

3548 urlmjrho.exe
Modifies Windows Firewall 1 TTPs 1 IoCs
evasion

Modify Existing Service
T1031

Processes:

netsh.exe

pid process

3684 netsh.exe

pid	process
3548	urlmjrho.exe

pid	process
3684	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\bnafitqw\ImagePath = "C:\\Windows\\SysWOW64\\bnafitqw\\urlmjrho.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:

3289502006a84fdf3228454fcfdb37cc8b070a85a9f1ddcea523f1f0627045df.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\Control Panel\International\Geo\Nation	3289502006a84fdf3228454fcfdb37cc8b070a85a9f1ddcea523f1f0627045df.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

urlmjrho.exe

description pid process target process

PID 3548 set thread context of 4188 3548 urlmjrho.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

3584 sc.exe
1452 sc.exe
3688 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 3548 set thread context of 4188	3548	urlmjrho.exe	svchost.exe

pid	process
3584	sc.exe
1452	sc.exe
3688	sc.exe

Program crash 2 IoCs

Processes:

WerFault.exeWerFault.exe

pid	pid_target	process	target process
3796	2424	WerFault.exe	3289502006a84fdf3228454fcfdb37cc8b070a85a9f1ddcea523f1f0627045df.exe
3076	3548	WerFault.exe	urlmjrho.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

3289502006a84fdf3228454fcfdb37cc8b070a85a9f1ddcea523f1f0627045df.exeurlmjrho.exe

description	pid	process	target process
PID 2424 wrote to memory of 380	2424	3289502006a84fdf3228454fcfdb37cc8b070a85a9f1ddcea523f1f0627045df.exe	cmd.exe
PID 2424 wrote to memory of 380	2424	3289502006a84fdf3228454fcfdb37cc8b070a85a9f1ddcea523f1f0627045df.exe	cmd.exe
PID 2424 wrote to memory of 380	2424	3289502006a84fdf3228454fcfdb37cc8b070a85a9f1ddcea523f1f0627045df.exe	cmd.exe
PID 2424 wrote to memory of 2600	2424	3289502006a84fdf3228454fcfdb37cc8b070a85a9f1ddcea523f1f0627045df.exe	cmd.exe
PID 2424 wrote to memory of 2600	2424	3289502006a84fdf3228454fcfdb37cc8b070a85a9f1ddcea523f1f0627045df.exe	cmd.exe
PID 2424 wrote to memory of 2600	2424	3289502006a84fdf3228454fcfdb37cc8b070a85a9f1ddcea523f1f0627045df.exe	cmd.exe
PID 2424 wrote to memory of 3688	2424	3289502006a84fdf3228454fcfdb37cc8b070a85a9f1ddcea523f1f0627045df.exe	sc.exe
PID 2424 wrote to memory of 3688	2424	3289502006a84fdf3228454fcfdb37cc8b070a85a9f1ddcea523f1f0627045df.exe	sc.exe
PID 2424 wrote to memory of 3688	2424	3289502006a84fdf3228454fcfdb37cc8b070a85a9f1ddcea523f1f0627045df.exe	sc.exe
PID 2424 wrote to memory of 3584	2424	3289502006a84fdf3228454fcfdb37cc8b070a85a9f1ddcea523f1f0627045df.exe	sc.exe
PID 2424 wrote to memory of 3584	2424	3289502006a84fdf3228454fcfdb37cc8b070a85a9f1ddcea523f1f0627045df.exe	sc.exe
PID 2424 wrote to memory of 3584	2424	3289502006a84fdf3228454fcfdb37cc8b070a85a9f1ddcea523f1f0627045df.exe	sc.exe
PID 2424 wrote to memory of 1452	2424	3289502006a84fdf3228454fcfdb37cc8b070a85a9f1ddcea523f1f0627045df.exe	sc.exe
PID 2424 wrote to memory of 1452	2424	3289502006a84fdf3228454fcfdb37cc8b070a85a9f1ddcea523f1f0627045df.exe	sc.exe
PID 2424 wrote to memory of 1452	2424	3289502006a84fdf3228454fcfdb37cc8b070a85a9f1ddcea523f1f0627045df.exe	sc.exe
PID 2424 wrote to memory of 3684	2424	3289502006a84fdf3228454fcfdb37cc8b070a85a9f1ddcea523f1f0627045df.exe	netsh.exe
PID 2424 wrote to memory of 3684	2424	3289502006a84fdf3228454fcfdb37cc8b070a85a9f1ddcea523f1f0627045df.exe	netsh.exe
PID 2424 wrote to memory of 3684	2424	3289502006a84fdf3228454fcfdb37cc8b070a85a9f1ddcea523f1f0627045df.exe	netsh.exe
PID 3548 wrote to memory of 4188	3548	urlmjrho.exe	svchost.exe
PID 3548 wrote to memory of 4188	3548	urlmjrho.exe	svchost.exe
PID 3548 wrote to memory of 4188	3548	urlmjrho.exe	svchost.exe
PID 3548 wrote to memory of 4188	3548	urlmjrho.exe	svchost.exe
PID 3548 wrote to memory of 4188	3548	urlmjrho.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\3289502006a84fdf3228454fcfdb37cc8b070a85a9f1ddcea523f1f0627045df.exe
"C:\Users\Admin\AppData\Local\Temp\3289502006a84fdf3228454fcfdb37cc8b070a85a9f1ddcea523f1f0627045df.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2424

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\bnafitqw\
2⤵
PID:380

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\urlmjrho.exe" C:\Windows\SysWOW64\bnafitqw\
2⤵
PID:2600

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create bnafitqw binPath= "C:\Windows\SysWOW64\bnafitqw\urlmjrho.exe /d\"C:\Users\Admin\AppData\Local\Temp\3289502006a84fdf3228454fcfdb37cc8b070a85a9f1ddcea523f1f0627045df.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:3688

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description bnafitqw "wifi internet conection"
2⤵
- Launches sc.exe
PID:3584

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start bnafitqw
2⤵
- Launches sc.exe
PID:1452

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:3684

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2424 -s 1324
2⤵
- Program crash
PID:3796

C:\Windows\SysWOW64\bnafitqw\urlmjrho.exe
C:\Windows\SysWOW64\bnafitqw\urlmjrho.exe /d"C:\Users\Admin\AppData\Local\Temp\3289502006a84fdf3228454fcfdb37cc8b070a85a9f1ddcea523f1f0627045df.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3548

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Sets service image path in registry
PID:4188

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 3548 -s 536
2⤵
- Program crash
PID:3076

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 2424 -ip 2424
1⤵
PID:3196

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 496 -p 3548 -ip 3548
1⤵
PID:1428

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\urlmjrho.exe
Filesize
10.6MB

MD5
0a7596c0993b88bd8ad84dd1ea0e4674

SHA1
c6c6f61794fdf528ceedbb3817beff951d5f8c77

SHA256
cc7614973fbaaf1dd1eeacaa821e2705e1804b5c16386935d8e4bba67c31d301

SHA512
dd9ff905dcafcbe90ef201f11051180c3ca8a52f34db17383dedff7d1522ce7404057033afd96df26b18344946d776b9d7fc23c4247448eb9399c198f120f9c6

Download Submit
C:\Windows\SysWOW64\bnafitqw\urlmjrho.exe
Filesize
10.6MB

MD5
0a7596c0993b88bd8ad84dd1ea0e4674

SHA1
c6c6f61794fdf528ceedbb3817beff951d5f8c77

SHA256
cc7614973fbaaf1dd1eeacaa821e2705e1804b5c16386935d8e4bba67c31d301

SHA512
dd9ff905dcafcbe90ef201f11051180c3ca8a52f34db17383dedff7d1522ce7404057033afd96df26b18344946d776b9d7fc23c4247448eb9399c198f120f9c6

Download Submit
memory/380-135-0x0000000000000000-mapping.dmp

Download
memory/1452-140-0x0000000000000000-mapping.dmp

Download
memory/2424-133-0x00000000005B0000-0x00000000005C3000-memory.dmp

Filesize
76KB

Download
memory/2424-132-0x000000000077D000-0x000000000078E000-memory.dmp

Filesize
68KB

Download
memory/2424-134-0x0000000000400000-0x0000000000464000-memory.dmp

Filesize
400KB

Download
memory/2424-154-0x0000000000400000-0x0000000000464000-memory.dmp

Filesize
400KB

Download
memory/2424-153-0x000000000077D000-0x000000000078E000-memory.dmp

Filesize
68KB

Download
memory/2600-136-0x0000000000000000-mapping.dmp

Download
memory/3548-143-0x0000000000799000-0x00000000007A9000-memory.dmp

Filesize
64KB

Download
memory/3548-152-0x0000000000400000-0x0000000000464000-memory.dmp

Filesize
400KB

Download
memory/3548-144-0x00000000005B0000-0x00000000005C3000-memory.dmp

Filesize
76KB

Download
memory/3548-145-0x0000000000400000-0x0000000000464000-memory.dmp

Filesize
400KB

Download
memory/3548-148-0x0000000000400000-0x0000000000464000-memory.dmp

Filesize
400KB

Download
memory/3584-139-0x0000000000000000-mapping.dmp

Download
memory/3684-141-0x0000000000000000-mapping.dmp

Download
memory/3688-138-0x0000000000000000-mapping.dmp

Download
memory/4188-151-0x0000000000A80000-0x0000000000A95000-memory.dmp

Filesize
84KB

Download
memory/4188-147-0x0000000000A80000-0x0000000000A95000-memory.dmp

Filesize
84KB

Download
memory/4188-146-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads